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Implemented the calculation of the fraction of bad SPD and SDD channels in a given...
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
bf6adc12 31#include <TTreeStream.h>
afd25725 32#include <TDatabasePDG.h>
9a5326b1 33#include <TString.h>
e50912db 34#include <TRandom.h>
bf6adc12 35
23197852 36
af885e0f 37#include "AliESDEvent.h"
aad72f45 38#include "AliESDtrack.h"
9a5326b1 39#include "AliESDVertex.h"
6c94f330 40#include "AliV0.h"
bf6adc12 41#include "AliHelix.h"
00a7cc50 42#include "AliITSRecPoint.h"
e341247d 43#include "AliITSgeomTGeo.h"
44347160 44#include "AliITSReconstructor.h"
df29e9a4 45#include "AliTrackPointArray.h"
46#include "AliAlignObj.h"
572f41f9 47#include "AliITSClusterParam.h"
ae00569a 48#include "AliCDBManager.h"
49#include "AliCDBEntry.h"
23197852 50#include "AliITSsegmentation.h"
51#include "AliITSCalibration.h"
ae00569a 52#include "AliITSCalibrationSPD.h"
53#include "AliITSCalibrationSDD.h"
54#include "AliITSCalibrationSSD.h"
7167ae53 55#include "AliITSPlaneEff.h"
56#include "AliITSPlaneEffSPD.h"
57#include "AliITSPlaneEffSDD.h"
58#include "AliITSPlaneEffSSD.h"
ae00569a 59#include "AliITStrackerMI.h"
e43c066c 60
61ClassImp(AliITStrackerMI)
e43c066c 62
e50912db 63AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 64
8221b41b 65AliITStrackerMI::AliITStrackerMI():AliTracker(),
66fI(0),
67fBestTrack(),
68fTrackToFollow(),
69fTrackHypothesys(),
70fBestHypothesys(),
71fOriginal(),
72fCurrentEsdTrack(),
73fPass(0),
74fAfterV0(kFALSE),
75fLastLayerToTrackTo(0),
afd25725 76fCoefficients(0),
8221b41b 77fEsd(0),
e50912db 78fTrackingPhase("Default"),
6518a6c5 79fUseTGeo(3),
e50912db 80fNtracks(0),
81fxOverX0Pipe(-1.),
82fxTimesRhoPipe(-1.),
83fxOverX0PipeTrks(0),
84fxTimesRhoPipeTrks(0),
85fxOverX0ShieldTrks(0),
86fxTimesRhoShieldTrks(0),
87fxOverX0LayerTrks(0),
88fxTimesRhoLayerTrks(0),
4a66240a 89fDebugStreamer(0),
23197852 90fITSChannelStatus(0),
91fDetTypeRec(0),
ae00569a 92fPlaneEff(0) {
8221b41b 93 //Default constructor
e50912db 94 Int_t i;
95 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
96 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
97 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 98}
44347160 99//------------------------------------------------------------------------
1f3e997f 100AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 101fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 102fBestTrack(),
103fTrackToFollow(),
104fTrackHypothesys(),
105fBestHypothesys(),
106fOriginal(),
107fCurrentEsdTrack(),
108fPass(0),
109fAfterV0(kFALSE),
e50912db 110fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 111fCoefficients(0),
8221b41b 112fEsd(0),
e50912db 113fTrackingPhase("Default"),
6518a6c5 114fUseTGeo(3),
e50912db 115fNtracks(0),
116fxOverX0Pipe(-1.),
117fxTimesRhoPipe(-1.),
118fxOverX0PipeTrks(0),
119fxTimesRhoPipeTrks(0),
120fxOverX0ShieldTrks(0),
121fxTimesRhoShieldTrks(0),
122fxOverX0LayerTrks(0),
123fxTimesRhoLayerTrks(0),
4a66240a 124fDebugStreamer(0),
23197852 125fITSChannelStatus(0),
126fDetTypeRec(0),
ae00569a 127fPlaneEff(0) {
e43c066c 128 //--------------------------------------------------------------------
129 //This is the AliITStrackerMI constructor
130 //--------------------------------------------------------------------
e341247d 131 if (geom) {
132 AliWarning("\"geom\" is actually a dummy argument !");
133 }
134
afd25725 135 fCoefficients = 0;
628e7bb0 136 fAfterV0 = kFALSE;
e341247d 137
e50912db 138 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 139 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
140 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
141
142 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
143 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 144 Double_t poff=TMath::ATan2(y,x);
145 Double_t zoff=z;
e341247d 146 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 147
e341247d 148 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 149 r += TMath::Sqrt(x*x + y*y);
e341247d 150 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 151 r += TMath::Sqrt(x*x + y*y);
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
154 r*=0.25;
155
156 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
157
158 for (Int_t j=1; j<nlad+1; j++) {
159 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 160 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 161 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
162 m.Multiply(tm);
a5d0fae6 163 Double_t txyz[3]={0.};
164 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 165 m.LocalToMaster(txyz,xyz);
a5d0fae6 166 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 167 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 168
169 if (phi<0) phi+=TMath::TwoPi();
170 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
171
e43c066c 172 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
173 new(&det) AliITSdetector(r,phi);
1c97ce2f 174 // compute the real radius (with misalignment)
175 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
176 mmisal.Multiply(tm);
177 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
178 mmisal.LocalToMaster(txyz,xyz);
179 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
180 det.SetRmisal(rmisal);
181
23197852 182 } // end loop on detectors
183 } // end loop on ladders
184 } // end loop on layers
e43c066c 185
e43c066c 186
e50912db 187 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 188
189 fPass=0;
190 fConstraint[0]=1; fConstraint[1]=0;
191
afd25725 192 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
193 AliITSReconstructor::GetRecoParam()->GetYVdef(),
194 AliITSReconstructor::GetRecoParam()->GetZVdef()};
195 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
196 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
197 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
198 SetVertex(xyzVtx,ersVtx);
e43c066c 199
e50912db 200 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
201 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 202 for (Int_t i=0;i<100000;i++){
203 fBestTrackIndex[i]=0;
204 }
afd25725 205
206 // store positions of centre of SPD modules (in z)
207 Double_t tr[3];
208 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
209 fSPDdetzcentre[0] = tr[2];
210 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
211 fSPDdetzcentre[1] = tr[2];
212 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
213 fSPDdetzcentre[2] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
215 fSPDdetzcentre[3] = tr[2];
216
afd25725 217 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 218 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
219 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
220 fUseTGeo = 3;
221 }
e50912db 222
223 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
224 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
225
81e97e0d 226 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
227
7167ae53 228 // only for plane efficiency evaluation
229 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff()) {
0ed58a47 230 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
231 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane))
232 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
233 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
234 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
235 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 236 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 237 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
238 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 239 }
628e7bb0 240}
44347160 241//------------------------------------------------------------------------
8221b41b 242AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
243fI(tracker.fI),
244fBestTrack(tracker.fBestTrack),
245fTrackToFollow(tracker.fTrackToFollow),
246fTrackHypothesys(tracker.fTrackHypothesys),
247fBestHypothesys(tracker.fBestHypothesys),
248fOriginal(tracker.fOriginal),
249fCurrentEsdTrack(tracker.fCurrentEsdTrack),
250fPass(tracker.fPass),
251fAfterV0(tracker.fAfterV0),
252fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 253fCoefficients(tracker.fCoefficients),
8221b41b 254fEsd(tracker.fEsd),
e50912db 255fTrackingPhase(tracker.fTrackingPhase),
afd25725 256fUseTGeo(tracker.fUseTGeo),
e50912db 257fNtracks(tracker.fNtracks),
258fxOverX0Pipe(tracker.fxOverX0Pipe),
259fxTimesRhoPipe(tracker.fxTimesRhoPipe),
260fxOverX0PipeTrks(0),
261fxTimesRhoPipeTrks(0),
262fxOverX0ShieldTrks(0),
263fxTimesRhoShieldTrks(0),
264fxOverX0LayerTrks(0),
265fxTimesRhoLayerTrks(0),
4a66240a 266fDebugStreamer(tracker.fDebugStreamer),
23197852 267fITSChannelStatus(tracker.fITSChannelStatus),
268fDetTypeRec(tracker.fDetTypeRec),
ae00569a 269fPlaneEff(tracker.fPlaneEff) {
8221b41b 270 //Copy constructor
e50912db 271 Int_t i;
272 for(i=0;i<4;i++) {
273 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
274 }
275 for(i=0;i<6;i++) {
276 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
277 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
278 }
279 for(i=0;i<2;i++) {
280 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
281 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
282 }
8221b41b 283}
44347160 284//------------------------------------------------------------------------
8221b41b 285AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
286 //Assignment operator
287 this->~AliITStrackerMI();
288 new(this) AliITStrackerMI(tracker);
289 return *this;
290}
44347160 291//------------------------------------------------------------------------
628e7bb0 292AliITStrackerMI::~AliITStrackerMI()
293{
294 //
295 //destructor
296 //
e50912db 297 if (fCoefficients) delete [] fCoefficients;
298 DeleteTrksMaterialLUT();
81e97e0d 299 if (fDebugStreamer) {
300 //fDebugStreamer->Close();
301 delete fDebugStreamer;
302 }
23197852 303 if(fITSChannelStatus) delete fITSChannelStatus;
304 if(fPlaneEff) delete fPlaneEff;
e43c066c 305}
44347160 306//------------------------------------------------------------------------
e43c066c 307void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
308 //--------------------------------------------------------------------
309 //This function set masks of the layers which must be not skipped
310 //--------------------------------------------------------------------
e50912db 311 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
e43c066c 312}
44347160 313//------------------------------------------------------------------------
23197852 314void AliITStrackerMI::ReadBadFromDetTypeRec() {
315 //--------------------------------------------------------------------
316 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
317 //i.e. from OCDB
318 //--------------------------------------------------------------------
319
320 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
321
322 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels\n");
323
324 if(!fDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
325
326 // ITS channels map
327 if(fITSChannelStatus) delete fITSChannelStatus;
328 fITSChannelStatus = new AliITSChannelStatus(AliCDBManager::Instance());
329
330 // ITS detectors and chips
331 Int_t i=0,j=0,k=0,ndet=0;
332 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
333 ndet=AliITSgeomTGeo::GetNDetectors(i);
334 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
335 for (k=1; k<ndet+1; k++) {
336 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
337 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fDetTypeRec);
338 } // end loop on detectors
339 } // end loop on ladders
340 } // end loop on layers
341
342 return;
343}
344//------------------------------------------------------------------------
e43c066c 345Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
346 //--------------------------------------------------------------------
347 //This function loads ITS clusters
348 //--------------------------------------------------------------------
00a7cc50 349 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 350 if (!branch) {
351 Error("LoadClusters"," can't get the branch !\n");
352 return 1;
353 }
354
23197852 355 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 356 branch->SetAddress(&clusters);
357
23197852 358 Int_t i=0,j=0,ndet=0;
e43c066c 359 Int_t detector=0;
23197852 360 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
361 ndet=fgLayers[i].GetNdetectors();
e43c066c 362 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
363 for (; j<jmax; j++) {
364 if (!cTree->GetEvent(j)) continue;
365 Int_t ncl=clusters->GetEntriesFast();
366 SignDeltas(clusters,GetZ());
1f3e997f 367
e43c066c 368 while (ncl--) {
00a7cc50 369 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 370 detector=c->GetDetectorIndex();
a504d56f 371
75fb37cc 372 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 373
00a7cc50 374 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 375 }
376 clusters->Delete();
afd25725 377 // add dead zone "virtual" cluster in SPD, if there is a cluster within
378 // zwindow cm from the dead zone
379 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 380 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 381 Int_t lab[4] = {0,0,0,detector};
382 Int_t info[3] = {0,0,i};
6518a6c5 383 Float_t q = 0.; // this identifies virtual clusters
afd25725 384 Float_t hit[5] = {xdead,
385 0.,
386 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
387 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
388 q};
389 Bool_t local = kTRUE;
390 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 391 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 392 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
393 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 394 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 395 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
396 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 397 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 398 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
399 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 400 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 401 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
402 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 403 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 404 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
405 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 406 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 407 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
408 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 409 }
6518a6c5 410 } // "virtual" clusters in SPD
e43c066c 411
412 }
413 //
414 fgLayers[i].ResetRoad(); //road defined by the cluster density
415 fgLayers[i].SortClusters();
416 }
417
23197852 418 dummy.Clear();
419
e43c066c 420 return 0;
421}
44347160 422//------------------------------------------------------------------------
e43c066c 423void AliITStrackerMI::UnloadClusters() {
424 //--------------------------------------------------------------------
425 //This function unloads ITS clusters
426 //--------------------------------------------------------------------
e50912db 427 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 428}
44347160 429//------------------------------------------------------------------------
23197852 430void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
431 //--------------------------------------------------------------------
432 // Publishes all pointers to clusters known to the tracker into the
433 // passed object array.
434 // The ownership is not transfered - the caller is not expected to delete
435 // the clusters.
436 //--------------------------------------------------------------------
437
438 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
439 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
440 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
441 array->AddLast(cl);
442 }
443 }
444
445 return;
446}
447//------------------------------------------------------------------------
afd25725 448static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 449 //--------------------------------------------------------------------
450 // Correction for the material between the TPC and the ITS
e43c066c 451 //--------------------------------------------------------------------
e50912db 452 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
453 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
454 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
455 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
456 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
457 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
458 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
459 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 460 } else {
afd25725 461 Error("CorrectForTPCtoITSDeadZoneMaterial","Track is already in the dead zone !");
e50912db 462 return 0;
e43c066c 463 }
464
e50912db 465 return 1;
e43c066c 466}
44347160 467//------------------------------------------------------------------------
af885e0f 468Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 469 //--------------------------------------------------------------------
470 // This functions reconstructs ITS tracks
471 // The clusters must be already loaded !
472 //--------------------------------------------------------------------
fddf8459 473
474
e50912db 475 fTrackingPhase="Clusters2Tracks";
476
e43c066c 477 TObjArray itsTracks(15000);
628e7bb0 478 fOriginal.Clear();
81e97e0d 479 fEsd = event; // store pointer to the esd
afd25725 480
9a5326b1 481 // temporary (for cosmics)
482 if(event->GetVertex()) {
483 TString title = event->GetVertex()->GetTitle();
484 if(title.Contains("cosmics")) {
485 Double_t xyz[3]={GetX(),GetY(),GetZ()};
486 Double_t exyz[3]={0.1,0.1,0.1};
487 SetVertex(xyz,exyz);
488 }
489 }
490 // temporary
afd25725 491
e43c066c 492 {/* Read ESD tracks */
afd25725 493 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 494 Int_t nentr=event->GetNumberOfTracks();
495 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
496 while (nentr--) {
497 AliESDtrack *esd=event->GetTrack(nentr);
d1181f10 498 if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
e43c066c 499
500 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
501 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
502 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 503 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 504 AliITStrackMI *t=0;
e43c066c 505 try {
15dd636f 506 t=new AliITStrackMI(*esd);
e43c066c 507 } catch (const Char_t *msg) {
628e7bb0 508 //Warning("Clusters2Tracks",msg);
e43c066c 509 delete t;
510 continue;
511 }
b9671574 512 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
513 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 514
515
afd25725 516 // look at the ESD mass hypothesys !
517 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 518 // write expected q
b9671574 519 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 520
afd25725 521 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 522 //track - can be V0 according to TPC
afd25725 523 } else {
524 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 525 delete t;
526 continue;
e50912db 527 }
afd25725 528 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 529 delete t;
530 continue;
531 }
6c23ffed 532 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 533 delete t;
534 continue;
535 }
e50912db 536 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 537 delete t;
538 continue;
539 }
e43c066c 540 }
b9671574 541 t->SetReconstructed(kFALSE);
e43c066c 542 itsTracks.AddLast(t);
628e7bb0 543 fOriginal.AddLast(t);
e43c066c 544 }
545 } /* End Read ESD tracks */
546
547 itsTracks.Sort();
628e7bb0 548 fOriginal.Sort();
e43c066c 549 Int_t nentr=itsTracks.GetEntriesFast();
550 fTrackHypothesys.Expand(nentr);
81e97e0d 551 fBestHypothesys.Expand(nentr);
afd25725 552 MakeCoefficients(nentr);
513ab112 553 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 554 Int_t ntrk=0;
afd25725 555 // THE TWO TRACKING PASSES
e43c066c 556 for (fPass=0; fPass<2; fPass++) {
557 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 558 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 559 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 560 if (t==0) continue; //this track has been already tracked
1c97ce2f 561 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 562 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 563 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 564 if (fConstraint[fPass]) {
565 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
566 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
567 }
e43c066c 568
569 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
570 fI = 6;
571 ResetTrackToFollow(*t);
572 ResetBestTrack();
6518a6c5 573
e50912db 574 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 575
e43c066c 576
577 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
578 //
ae00569a 579 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 580 if (!besttrack) continue;
581 besttrack->SetLabel(tpcLabel);
582 // besttrack->CookdEdx();
583 CookdEdx(besttrack);
b9671574 584 besttrack->SetFakeRatio(1.);
e43c066c 585 CookLabel(besttrack,0.); //For comparison only
e43c066c 586 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 587
628e7bb0 588 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
589
b9671574 590 t->SetReconstructed(kTRUE);
1c97ce2f 591 ntrk++;
e43c066c 592 }
593 GetBestHypothesysMIP(itsTracks);
afd25725 594 } // end loop on the two tracking passes
e43c066c 595
afd25725 596 if(event->GetNumberOfV0s()>0) UpdateTPCV0(event);
597 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) FindV02(event);
628e7bb0 598 fAfterV0 = kTRUE;
628e7bb0 599 //
e43c066c 600 itsTracks.Delete();
601 //
602 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 603 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 604 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
605 if (array) array->Delete();
606 delete fTrackHypothesys.RemoveAt(ientry);
607 }
608
609 fTrackHypothesys.Delete();
81e97e0d 610 fBestHypothesys.Delete();
628e7bb0 611 fOriginal.Clear();
afd25725 612 delete [] fCoefficients;
613 fCoefficients=0;
e50912db 614 DeleteTrksMaterialLUT();
615
e43c066c 616 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 617
618 fTrackingPhase="Default";
628e7bb0 619
e43c066c 620 return 0;
621}
44347160 622//------------------------------------------------------------------------
af885e0f 623Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 624 //--------------------------------------------------------------------
625 // This functions propagates reconstructed ITS tracks back
626 // The clusters must be loaded !
627 //--------------------------------------------------------------------
e50912db 628 fTrackingPhase="PropagateBack";
e43c066c 629 Int_t nentr=event->GetNumberOfTracks();
630 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
631
632 Int_t ntrk=0;
633 for (Int_t i=0; i<nentr; i++) {
634 AliESDtrack *esd=event->GetTrack(i);
635
636 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
637 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
638
15dd636f 639 AliITStrackMI *t=0;
e43c066c 640 try {
15dd636f 641 t=new AliITStrackMI(*esd);
e43c066c 642 } catch (const Char_t *msg) {
628e7bb0 643 //Warning("PropagateBack",msg);
e43c066c 644 delete t;
645 continue;
646 }
b9671574 647 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 648
649 ResetTrackToFollow(*t);
650
9a5326b1 651 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 652 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 653 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
654 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
655 fTrackToFollow.StartTimeIntegral();
656 // from vertex to outside pipe
657 CorrectForPipeMaterial(&fTrackToFollow,"outward");
e43c066c 658 }
659
6c94f330 660 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 661 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
662 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 663 delete t;
664 continue;
665 }
666 fTrackToFollow.SetLabel(t->GetLabel());
667 //fTrackToFollow.CookdEdx();
668 CookLabel(&fTrackToFollow,0.); //For comparison only
669 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
670 //UseClusters(&fTrackToFollow);
671 ntrk++;
672 }
673 delete t;
674 }
675
676 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
677
e50912db 678 fTrackingPhase="Default";
679
e43c066c 680 return 0;
681}
44347160 682//------------------------------------------------------------------------
af885e0f 683Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 684 //--------------------------------------------------------------------
685 // This functions refits ITS tracks using the
686 // "inward propagated" TPC tracks
687 // The clusters must be loaded !
688 //--------------------------------------------------------------------
e50912db 689 fTrackingPhase="RefitInward";
afd25725 690 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) RefitV02(event);
e43c066c 691 Int_t nentr=event->GetNumberOfTracks();
692 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
693
694 Int_t ntrk=0;
695 for (Int_t i=0; i<nentr; i++) {
696 AliESDtrack *esd=event->GetTrack(i);
697
698 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
699 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
700 if (esd->GetStatus()&AliESDtrack::kTPCout)
701 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
702
15dd636f 703 AliITStrackMI *t=0;
e43c066c 704 try {
15dd636f 705 t=new AliITStrackMI(*esd);
e43c066c 706 } catch (const Char_t *msg) {
628e7bb0 707 //Warning("RefitInward",msg);
e43c066c 708 delete t;
709 continue;
710 }
b9671574 711 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 712 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 713 delete t;
714 continue;
715 }
716
717 ResetTrackToFollow(*t);
718 fTrackToFollow.ResetClusters();
719
720 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 721 fTrackToFollow.ResetCovariance(10.);
e43c066c 722
723 //Refitting...
7167ae53 724 Bool_t pe=AliITSReconstructor::GetRecoParam()->GetComputePlaneEff();
725 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
e43c066c 726 fTrackToFollow.SetLabel(t->GetLabel());
727 // fTrackToFollow.CookdEdx();
728 CookdEdx(&fTrackToFollow);
729
730 CookLabel(&fTrackToFollow,0.0); //For comparison only
731
9a5326b1 732 //The beam pipe
e50912db 733 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 734 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 735 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 736 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
737 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
9a5326b1 738 Float_t r[3]={0.,0.,0.};
739 Double_t maxD=3.;
740 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
741 ntrk++;
e43c066c 742 }
743 }
744 delete t;
745 }
746
747 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
748
e50912db 749 fTrackingPhase="Default";
750
e43c066c 751 return 0;
752}
44347160 753//------------------------------------------------------------------------
e43c066c 754AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
755 //--------------------------------------------------------------------
756 // Return pointer to a given cluster
757 //--------------------------------------------------------------------
758 Int_t l=(index & 0xf0000000) >> 28;
759 Int_t c=(index & 0x0fffffff) >> 00;
760 return fgLayers[l].GetCluster(c);
761}
9a5326b1 762//------------------------------------------------------------------------
df29e9a4 763Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 764 //--------------------------------------------------------------------
df29e9a4 765 // Get track space point with index i
9a5326b1 766 //--------------------------------------------------------------------
60066577 767
78b03929 768 Int_t l=(index & 0xf0000000) >> 28;
769 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 770 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 771 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 772
60066577 773 Float_t xyz[3];
774 Float_t cov[6];
775 cl->GetGlobalXYZ(xyz);
776 cl->GetGlobalCov(cov);
777 p.SetXYZ(xyz, cov);
be77c8c9 778 p.SetCharge(cl->GetQ());
ebbcf1ea 779 p.SetDriftTime(cl->GetDriftTime());
ae079791 780 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 781 switch (l) {
782 case 0:
ae079791 783 iLayer = AliGeomManager::kSPD1;
df29e9a4 784 break;
785 case 1:
ae079791 786 iLayer = AliGeomManager::kSPD2;
df29e9a4 787 break;
788 case 2:
ae079791 789 iLayer = AliGeomManager::kSDD1;
df29e9a4 790 break;
791 case 3:
ae079791 792 iLayer = AliGeomManager::kSDD2;
9a5326b1 793 break;
794 case 4:
795 iLayer = AliGeomManager::kSSD1;
796 break;
797 case 5:
798 iLayer = AliGeomManager::kSSD2;
799 break;
800 default:
801 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
802 break;
803 };
804 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
805 p.SetVolumeID((UShort_t)volid);
806 return kTRUE;
807}
808//------------------------------------------------------------------------
809Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
810 AliTrackPoint& p, const AliESDtrack *t) {
811 //--------------------------------------------------------------------
812 // Get track space point with index i
813 // (assign error estimated during the tracking)
814 //--------------------------------------------------------------------
815
816 Int_t l=(index & 0xf0000000) >> 28;
817 Int_t c=(index & 0x0fffffff) >> 00;
818 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
819 Int_t idet = cl->GetDetectorIndex();
820 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
821
822 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
823 Float_t detxy[2];
824 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
825 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
826 Double_t alpha = t->GetAlpha();
827 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
828 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
829 phi += alpha-det.GetPhi();
830 Float_t tgphi = TMath::Tan(phi);
831
832 Float_t tgl = t->GetTgl(); // tgl about const along track
833 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
834
835 Float_t errlocalx,errlocalz;
8c139cf3 836 Bool_t addMisalErr=kFALSE;
837 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz,addMisalErr);
9a5326b1 838
839 Float_t xyz[3];
840 Float_t cov[6];
841 cl->GetGlobalXYZ(xyz);
842 // cl->GetGlobalCov(cov);
843 Float_t pos[3] = {0.,0.,0.};
844 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
845 tmpcl.GetGlobalCov(cov);
846
847 p.SetXYZ(xyz, cov);
be77c8c9 848 p.SetCharge(cl->GetQ());
ebbcf1ea 849 p.SetDriftTime(cl->GetDriftTime());
9a5326b1 850
851 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
852 switch (l) {
853 case 0:
854 iLayer = AliGeomManager::kSPD1;
855 break;
856 case 1:
857 iLayer = AliGeomManager::kSPD2;
858 break;
859 case 2:
860 iLayer = AliGeomManager::kSDD1;
861 break;
862 case 3:
863 iLayer = AliGeomManager::kSDD2;
df29e9a4 864 break;
865 case 4:
ae079791 866 iLayer = AliGeomManager::kSSD1;
df29e9a4 867 break;
868 case 5:
ae079791 869 iLayer = AliGeomManager::kSSD2;
df29e9a4 870 break;
871 default:
872 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
873 break;
874 };
ae079791 875 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
df29e9a4 876 p.SetVolumeID((UShort_t)volid);
877 return kTRUE;
878}
44347160 879//------------------------------------------------------------------------
81e97e0d 880void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 881{
882 //--------------------------------------------------------------------
883 // Follow prolongation tree
884 //--------------------------------------------------------------------
81e97e0d 885 //
afd25725 886 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
887 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
888
2755f080 889
b9671574 890 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 891 if (esd->GetV0Index(0)>0) {
81e97e0d 892 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 893 // mapping of ESD track is different as ITS track in Containers
81e97e0d 894 // Need something more stable
44347160 895 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 896 for (Int_t i=0;i<3;i++){
897 Int_t index = esd->GetV0Index(i);
898 if (index==0) break;
d6a49f20 899 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 900 if (vertex->GetStatus()<0) continue; // rejected V0
901 //
afd25725 902 if (esd->GetSign()>0) {
903 vertex->SetIndex(0,esdindex);
904 } else {
905 vertex->SetIndex(1,esdindex);
906 }
81e97e0d 907 }
908 }
909 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
910 if (!bestarray){
911 bestarray = new TObjArray(5);
912 fBestHypothesys.AddAt(bestarray,esdindex);
913 }
e43c066c 914
81e97e0d 915 //
e43c066c 916 //setup tree of the prolongations
917 //
15dd636f 918 static AliITStrackMI tracks[7][100];
919 AliITStrackMI *currenttrack;
920 static AliITStrackMI currenttrack1;
921 static AliITStrackMI currenttrack2;
922 static AliITStrackMI backuptrack;
e43c066c 923 Int_t ntracks[7];
924 Int_t nindexes[7][100];
925 Float_t normalizedchi2[100];
926 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 927 otrack->SetNSkipped(0);
15dd636f 928 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 929 ntracks[6]=1;
81e97e0d 930 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 931 Int_t modstatus = 1; // found
932 Float_t xloc,zloc;
e43c066c 933 //
934 //
935 // follow prolongations
e50912db 936 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
1c97ce2f 937 //printf("FollowProlongationTree: layer %d\n",ilayer);
2755f080 938 fI = ilayer;
e43c066c 939 //
2755f080 940 AliITSlayer &layer=fgLayers[ilayer];
941 Double_t r = layer.GetR();
e43c066c 942 ntracks[ilayer]=0;
943 //
944 //
2755f080 945 Int_t nskipped=0;
e43c066c 946 Float_t nused =0;
e50912db 947 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 948 //set current track
949 if (ntracks[ilayer]>=100) break;
b9671574 950 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
951 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 952 if (ntracks[ilayer]>15+ilayer){
b9671574 953 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
954 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 955 }
956
15dd636f 957 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 958
afd25725 959 // material between SSD and SDD, SDD and SPD
e50912db 960 if (ilayer==3)
961 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
962 if (ilayer==1)
963 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 964
2755f080 965 // detector number
8602c008 966 Double_t phi,z;
967 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 968 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 969
970 Double_t trackGlobXYZ1[3];
d1181f10 971 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 972
2755f080 973 // Get the budget to the primary vertex for the current track being prolonged
974 Double_t budgetToPrimVertex = GetEffectiveThickness();
975
976 // check if we allow a prolongation without point
6518a6c5 977 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 978 if (skip) {
979 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 980 // propagate to the layer radius
d1181f10 981 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
982 if(!vtrack->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) continue;
2755f080 983 // apply correction for material of the current layer
984 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
985 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
986 vtrack->SetClIndex(ilayer,0);
ae00569a 987 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 988 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
989 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
990 }
2755f080 991 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
992 ntracks[ilayer]++;
6518a6c5 993 continue;
2755f080 994 }
995
996 // track outside layer acceptance in z
997 if (idet<0) continue;
998
999 //propagate to the intersection with the detector plane
1000 const AliITSdetector &det=layer.GetDetector(idet);
1001 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1002 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1003 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1004 currenttrack1.SetDetectorIndex(idet);
1005 currenttrack2.SetDetectorIndex(idet);
d1181f10 1006 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1007
afd25725 1008 //***************
1c97ce2f 1009 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1010 //
2755f080 1011 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1012 Double_t zmin,zmax,ymin,ymax;
1013 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1014
afd25725 1015 // select clusters in road
e43c066c 1016 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1017 //********************
44347160 1018
afd25725 1019 // Define criteria for track-cluster association
44347160 1020 Double_t msz = currenttrack1.GetSigmaZ2() +
1021 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1022 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1023 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1024 Double_t msy = currenttrack1.GetSigmaY2() +
1025 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1026 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1027 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1028 if (constrain) {
1029 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1030 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1031 } else {
1032 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1033 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1034 }
1035 msz = 1./msz; // 1/RoadZ^2
1036 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1037
e43c066c 1038 //
e43c066c 1039 //
afd25725 1040 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1041 //
afd25725 1042 const AliITSRecPoint *cl=0;
1043 Int_t clidx=-1;
1044 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1045 Bool_t deadzoneSPD=kFALSE;
e43c066c 1046 currenttrack = &currenttrack1;
6518a6c5 1047
ae00569a 1048 // check if the road contains a dead zone
23197852 1049 Bool_t noClusters = kFALSE;
1050 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1c97ce2f 1051 //if (noClusters) printf("no clusters in road\n");
1052 Double_t dz=0.5*(zmax-zmin);
1053 Double_t dy=0.5*(ymax-ymin);
1054 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
ae00569a 1055 // create a prolongation without clusters (check also if there are no clusters in the road)
1056 if (dead ||
23197852 1057 (noClusters &&
ae00569a 1058 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1059 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1060 updatetrack->SetClIndex(ilayer,0);
ae00569a 1061 if (dead==0) {
1062 modstatus = 5; // no cls in road
1063 } else if (dead==1) {
1064 modstatus = 7; // holes in z in SPD
23197852 1065 } else if (dead==2 || dead==3) {
ae00569a 1066 modstatus = 2; // dead from OCDB
1067 }
1068 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1069 // apply correction for material of the current layer
1070 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1071 if (constrain) { // apply vertex constrain
1072 updatetrack->SetConstrain(constrain);
1073 Bool_t isPrim = kTRUE;
1074 if (ilayer<4) { // check that it's close to the vertex
1075 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1076 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1077 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1078 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1079 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1080 }
1081 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1082 }
ae00569a 1083 if (dead) {
1084 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1085 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1086 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1087 deadzoneSPD=kTRUE;
1088 }
6518a6c5 1089 }
1090 ntracks[ilayer]++;
1091 }
1092
ae00569a 1093 clidx=-1;
6518a6c5 1094 // loop over clusters in the road
afd25725 1095 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1096 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1097 Bool_t changedet =kFALSE;
6518a6c5 1098 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1099 Int_t idetc=cl->GetDetectorIndex();
afd25725 1100
a5d0fae6 1101 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1102 // take into account misalignment (bring track to real detector plane)
1103 Double_t xTrOrig = currenttrack->GetX();
d1181f10 1104 if (!currenttrack->PropagateTo(xTrOrig+cl->GetX(),0.,0.)) continue;
afd25725 1105 // a first cut on track-cluster distance
1106 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1107 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1108 { // cluster not associated to track
1109 //printf("not ass\n");
1110 continue;
1111 }
1112 // bring track back to ideal detector plane
d1181f10 1113 if (!currenttrack->PropagateTo(xTrOrig,0.,0.)) continue;
afd25725 1114 } else { // have to move track to cluster's detector
a5d0fae6 1115 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1116 // a first cut on track-cluster distance
a5d0fae6 1117 Double_t y;
1c97ce2f 1118 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1119 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1120 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1121 continue; // cluster not associated to track
e43c066c 1122 //
15dd636f 1123 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1124 changedet = kTRUE;
e43c066c 1125 currenttrack =&currenttrack2;
a5d0fae6 1126 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1127 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1128 changedet = kFALSE;
e43c066c 1129 continue;
1130 }
a5d0fae6 1131 currenttrack->SetDetectorIndex(idetc);
e50912db 1132 // Get again the budget to the primary vertex
1133 // for the current track being prolonged, if had to change detector
1134 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1135 }
1136
afd25725 1137 // calculate track-clusters chi2
1138 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1139 // chi2 cut
1c97ce2f 1140 //printf("chi2 %f max %f\n",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer));
afd25725 1141 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1142 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1143 if (ntracks[ilayer]>=100) continue;
15dd636f 1144 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
b9671574 1145 updatetrack->SetClIndex(ilayer,0);
afd25725 1146 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1147
6518a6c5 1148 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1149 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1150 //printf("update failed\n");
1151 continue;
1152 }
afd25725 1153 updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
ae00569a 1154 modstatus = 1; // found
6518a6c5 1155 } else { // virtual cluster in dead zone
b9671574 1156 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
6518a6c5 1157 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1158 modstatus = 7; // holes in z in SPD
1159 }
1160
1161 if (changedet) {
1162 Float_t xlocnewdet,zlocnewdet;
d1181f10 1163 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1164 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1165 }
ae00569a 1166 } else {
1167 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1168 }
afd25725 1169 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1170
1171 // apply correction for material of the current layer
e50912db 1172 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1173
afd25725 1174 if (constrain) { // apply vertex constrain
b9671574 1175 updatetrack->SetConstrain(constrain);
e43c066c 1176 Bool_t isPrim = kTRUE;
afd25725 1177 if (ilayer<4) { // check that it's close to the vertex
b9671574 1178 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1179 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1180 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1181 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1182 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1183 }
afd25725 1184 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1185 } //apply vertex constrain
1186 ntracks[ilayer]++;
afd25725 1187 } // create new hypothesis
1c97ce2f 1188 //else printf("chi2 too large\n");
2755f080 1189 } // loop over possible prolongations
1190
1191 // allow one prolongation without clusters
6518a6c5 1192 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1193 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1194 // apply correction for material of the current layer
1195 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1196 vtrack->SetClIndex(ilayer,0);
ae00569a 1197 modstatus = 3; // skipped
1198 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1199 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1200 vtrack->IncrementNSkipped();
e43c066c 1201 ntracks[ilayer]++;
1202 }
628e7bb0 1203
2755f080 1204 // allow one prolongation without clusters for tracks with |tgl|>1.1
1205 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1206 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1207 // apply correction for material of the current layer
1208 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1209 vtrack->SetClIndex(ilayer,0);
ae00569a 1210 modstatus = 3; // skipped
1211 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1212 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1213 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1214 ntracks[ilayer]++;
1215 }
1216
e43c066c 1217
e50912db 1218 } // loop over tracks in layer ilayer+1
afd25725 1219
1220 //loop over track candidates for the current layer
e43c066c 1221 //
1222 //
1223 Int_t accepted=0;
1224
afd25725 1225 Int_t golden=0;
e43c066c 1226 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1227 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1228 if (normalizedchi2[itrack] <
1229 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1230 if (ilayer>4) {
1231 accepted++;
1232 } else {
1233 if (constrain) { // constrain
afd25725 1234 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1235 accepted++;
44347160 1236 } else { // !constrain
afd25725 1237 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1238 accepted++;
44347160 1239 }
e43c066c 1240 }
1241 }
afd25725 1242 // sort tracks by increasing normalized chi2
1243 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1244 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1245 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1246 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1247 } // end loop over layers
1248
afd25725 1249
1250 //
1251 // Now select tracks to be kept
1252 //
44347160 1253 Int_t max = constrain ? 20 : 5;
e43c066c 1254
afd25725 1255 // tracks that reach layer 0 (SPD inner)
44347160 1256 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1257 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1258 if (track.GetNumberOfClusters()<2) continue;
afd25725 1259 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1260 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1261 continue;
1262 }
15dd636f 1263 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1264 }
afd25725 1265
1266 // tracks that reach layer 1 (SPD outer)
628e7bb0 1267 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1268 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1269 if (track.GetNumberOfClusters()<4) continue;
afd25725 1270 if (!constrain && track.GetNormChi2(1) >
1271 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1272 if (constrain) track.IncrementNSkipped();
81e97e0d 1273 if (!constrain) {
b9671574 1274 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1275 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1276 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1277 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1278 }
1279 }
15dd636f 1280 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1281 }
afd25725 1282
6518a6c5 1283 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1284 if (!constrain){
628e7bb0 1285 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1286 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1287 if (track.GetNumberOfClusters()<3) continue;
afd25725 1288 if (!constrain && track.GetNormChi2(2) >
1289 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1290 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1291 if (!constrain){
b9671574 1292 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1293 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1294 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1295 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1296 }
1297 }
15dd636f 1298 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1299 }
1300 }
81e97e0d 1301
afd25725 1302 if (!constrain) {
81e97e0d 1303 //
afd25725 1304 // register best track of each layer - important for V0 finder
81e97e0d 1305 //
1306 for (Int_t ilayer=0;ilayer<5;ilayer++){
1307 if (ntracks[ilayer]==0) continue;
1308 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1309 if (track.GetNumberOfClusters()<1) continue;
1310 CookLabel(&track,0);
1311 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1312 }
1313 }
1314 //
1315 // update TPC V0 information
1316 //
b9671574 1317 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1318 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1319 for (Int_t i=0;i<3;i++){
b9671574 1320 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1321 if (index==0) break;
44347160 1322 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1323 if (vertex->GetStatus()<0) continue; // rejected V0
1324 //
6c94f330 1325 if (otrack->GetSign()>0) {
81e97e0d 1326 vertex->SetIndex(0,esdindex);
1327 }
1328 else{
1329 vertex->SetIndex(1,esdindex);
1330 }
1331 //find nearest layer with track info
b75d63a7 1332 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1333 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1334 Int_t nearest = nearestold;
1335 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1336 if (ntracks[nearest]==0){
1337 nearest = ilayer;
1338 }
1339 }
1340 //
1341 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1342 if (nearestold<5&&nearest<5){
b9671574 1343 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1344 if (accept){
6c94f330 1345 if (track.GetSign()>0) {
b75d63a7 1346 vertex->SetParamP(track);
81e97e0d 1347 vertex->Update(fprimvertex);
44347160 1348 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1349 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1350 }else{
b75d63a7 1351 vertex->SetParamN(track);
81e97e0d 1352 vertex->Update(fprimvertex);
1353 //vertex->SetIndex(1,track.fESDtrack->GetID());
1354 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1355 }
1356 vertex->SetStatus(vertex->GetStatus()+1);
1357 }else{
44347160 1358 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1359 }
1360 }
81e97e0d 1361 }
afd25725 1362 }
1363
e43c066c 1364}
44347160 1365//------------------------------------------------------------------------
e43c066c 1366AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1367{
1368 //--------------------------------------------------------------------
1369 //
1370 //
1371 return fgLayers[layer];
1372}
44347160 1373//------------------------------------------------------------------------
8221b41b 1374AliITStrackerMI::AliITSlayer::AliITSlayer():
1375fR(0),
1376fPhiOffset(0),
1377fNladders(0),
1378fZOffset(0),
1379fNdetectors(0),
1380fDetectors(0),
1381fN(0),
1382fDy5(0),
1383fDy10(0),
1384fDy20(0),
1385fClustersCs(0),
1386fClusterIndexCs(0),
1387fYcs(0),
1388fZcs(0),
1389fNcs(0),
1390fCurrentSlice(-1),
1391fZmax(0),
1392fYmin(0),
1393fYmax(0),
1394fI(0),
1395fImax(0),
1396fSkip(0),
1397fAccepted(0),
1398fRoad(0){
e43c066c 1399 //--------------------------------------------------------------------
1400 //default AliITSlayer constructor
1401 //--------------------------------------------------------------------
e50912db 1402 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1403 fClusterWeight[i]=0;
1404 fClusterTracks[0][i]=-1;
1405 fClusterTracks[1][i]=-1;
1406 fClusterTracks[2][i]=-1;
1407 fClusterTracks[3][i]=-1;
1408 }
1409}
44347160 1410//------------------------------------------------------------------------
e43c066c 1411AliITStrackerMI::AliITSlayer::
8221b41b 1412AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1413fR(r),
1414fPhiOffset(p),
1415fNladders(nl),
1416fZOffset(z),
1417fNdetectors(nd),
1418fDetectors(0),
1419fN(0),
1420fDy5(0),
1421fDy10(0),
1422fDy20(0),
1423fClustersCs(0),
1424fClusterIndexCs(0),
1425fYcs(0),
1426fZcs(0),
1427fNcs(0),
1428fCurrentSlice(-1),
1429fZmax(0),
1430fYmin(0),
1431fYmax(0),
1432fI(0),
1433fImax(0),
1434fSkip(0),
1435fAccepted(0),
1436fRoad(0) {
e43c066c 1437 //--------------------------------------------------------------------
1438 //main AliITSlayer constructor
1439 //--------------------------------------------------------------------
e43c066c 1440 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1441 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1442}
44347160 1443//------------------------------------------------------------------------
8221b41b 1444AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1445fR(layer.fR),
1446fPhiOffset(layer.fPhiOffset),
1447fNladders(layer.fNladders),
1448fZOffset(layer.fZOffset),
1449fNdetectors(layer.fNdetectors),
1450fDetectors(layer.fDetectors),
1451fN(layer.fN),
1452fDy5(layer.fDy5),
1453fDy10(layer.fDy10),
1454fDy20(layer.fDy20),
1455fClustersCs(layer.fClustersCs),
1456fClusterIndexCs(layer.fClusterIndexCs),
1457fYcs(layer.fYcs),
1458fZcs(layer.fZcs),
1459fNcs(layer.fNcs),
1460fCurrentSlice(layer.fCurrentSlice),
1461fZmax(layer.fZmax),
1462fYmin(layer.fYmin),
1463fYmax(layer.fYmax),
1464fI(layer.fI),
1465fImax(layer.fImax),
1466fSkip(layer.fSkip),
1467fAccepted(layer.fAccepted),
1468fRoad(layer.fRoad){
1469 //Copy constructor
1470}
44347160 1471//------------------------------------------------------------------------
e43c066c 1472AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1473 //--------------------------------------------------------------------
1474 // AliITSlayer destructor
1475 //--------------------------------------------------------------------
23197852 1476 delete [] fDetectors;
e43c066c 1477 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1478 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1479 fClusterWeight[i]=0;
1480 fClusterTracks[0][i]=-1;
1481 fClusterTracks[1][i]=-1;
1482 fClusterTracks[2][i]=-1;
1483 fClusterTracks[3][i]=-1;
1484 }
1485}
44347160 1486//------------------------------------------------------------------------
e43c066c 1487void AliITStrackerMI::AliITSlayer::ResetClusters() {
1488 //--------------------------------------------------------------------
1489 // This function removes loaded clusters
1490 //--------------------------------------------------------------------
1491 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1492 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1493 fClusterWeight[i]=0;
1494 fClusterTracks[0][i]=-1;
1495 fClusterTracks[1][i]=-1;
1496 fClusterTracks[2][i]=-1;
1497 fClusterTracks[3][i]=-1;
1498 }
1499
1500 fN=0;
1501 fI=0;
1502}
44347160 1503//------------------------------------------------------------------------
e43c066c 1504void AliITStrackerMI::AliITSlayer::ResetWeights() {
1505 //--------------------------------------------------------------------
1506 // This function reset weights of the clusters
1507 //--------------------------------------------------------------------
e50912db 1508 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1509 fClusterWeight[i]=0;
1510 fClusterTracks[0][i]=-1;
1511 fClusterTracks[1][i]=-1;
1512 fClusterTracks[2][i]=-1;
1513 fClusterTracks[3][i]=-1;
1514 }
1515 for (Int_t i=0; i<fN;i++) {
00a7cc50 1516 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1517 if (cl&&cl->IsUsed()) cl->Use();
1518 }
1519
1520}
44347160 1521//------------------------------------------------------------------------
e43c066c 1522void AliITStrackerMI::AliITSlayer::ResetRoad() {
1523 //--------------------------------------------------------------------
1524 // This function calculates the road defined by the cluster density
1525 //--------------------------------------------------------------------
1526 Int_t n=0;
1527 for (Int_t i=0; i<fN; i++) {
1528 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1529 }
afd25725 1530 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1531}
44347160 1532//------------------------------------------------------------------------
afd25725 1533Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1534 //--------------------------------------------------------------------
1535 //This function adds a cluster to this layer
1536 //--------------------------------------------------------------------
e50912db 1537 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1538 ::Error("InsertCluster","Too many clusters !\n");
1539 return 1;
1540 }
1541 fCurrentSlice=-1;
afd25725 1542 fClusters[fN]=cl;
1d4090b7 1543 fN++;
afd25725 1544 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1545 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1546 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1547 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1548 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1549
1550 return 0;
1551}
44347160 1552//------------------------------------------------------------------------
e43c066c 1553void AliITStrackerMI::AliITSlayer::SortClusters()
1554{
1555 //
1556 //sort clusters
1557 //
00a7cc50 1558 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1559 Float_t *z = new Float_t[fN];
1560 Int_t * index = new Int_t[fN];
1561 //
1562 for (Int_t i=0;i<fN;i++){
1563 z[i] = fClusters[i]->GetZ();
1564 }
1565 TMath::Sort(fN,z,index,kFALSE);
1566 for (Int_t i=0;i<fN;i++){
1567 clusters[i] = fClusters[index[i]];
1568 }
1569 //
1570 for (Int_t i=0;i<fN;i++){
1571 fClusters[i] = clusters[i];
1572 fZ[i] = fClusters[i]->GetZ();
1573 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1574 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1575 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1576 fY[i] = y;
1577 }
1578 delete[] index;
1579 delete[] z;
1580 delete[] clusters;
1581 //
1582
e43c066c 1583 fYB[0]=10000000;
1584 fYB[1]=-10000000;
1585 for (Int_t i=0;i<fN;i++){
1586 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1587 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1588 fClusterIndex[i] = i;
1589 }
1590 //
1591 // fill slices
1592 fDy5 = (fYB[1]-fYB[0])/5.;
1593 fDy10 = (fYB[1]-fYB[0])/10.;
1594 fDy20 = (fYB[1]-fYB[0])/20.;
1595 for (Int_t i=0;i<6;i++) fN5[i] =0;
1596 for (Int_t i=0;i<11;i++) fN10[i]=0;
1597 for (Int_t i=0;i<21;i++) fN20[i]=0;
1598 //
1599 for (Int_t i=0;i<6;i++) {fBy5[i][0] = fYB[0]+(i-0.75)*fDy5; fBy5[i][1] = fYB[0]+(i+0.75)*fDy5;}
1600 for (Int_t i=0;i<11;i++) {fBy10[i][0] = fYB[0]+(i-0.75)*fDy10; fBy10[i][1] = fYB[0]+(i+0.75)*fDy10;}
1601 for (Int_t i=0;i<21;i++) {fBy20[i][0] = fYB[0]+(i-0.75)*fDy20; fBy20[i][1] = fYB[0]+(i+0.75)*fDy20;}
1602 //
1603 //
1d4090b7 1604 for (Int_t i=0;i<fN;i++)
1605 for (Int_t irot=-1;irot<=1;irot++){
1606 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1607 // slice 5
1608 for (Int_t slice=0; slice<6;slice++){
e50912db 1609 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1610 fClusters5[slice][fN5[slice]] = fClusters[i];
1611 fY5[slice][fN5[slice]] = curY;
1612 fZ5[slice][fN5[slice]] = fZ[i];
1613 fClusterIndex5[slice][fN5[slice]]=i;
1614 fN5[slice]++;
1615 }
e43c066c 1616 }
1d4090b7 1617 // slice 10
1618 for (Int_t slice=0; slice<11;slice++){
e50912db 1619 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1620 fClusters10[slice][fN10[slice]] = fClusters[i];
1621 fY10[slice][fN10[slice]] = curY;
1622 fZ10[slice][fN10[slice]] = fZ[i];
1623 fClusterIndex10[slice][fN10[slice]]=i;
1624 fN10[slice]++;
1625 }
e43c066c 1626 }
1d4090b7 1627 // slice 20
1628 for (Int_t slice=0; slice<21;slice++){
e50912db 1629 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1630 fClusters20[slice][fN20[slice]] = fClusters[i];
1631 fY20[slice][fN20[slice]] = curY;
1632 fZ20[slice][fN20[slice]] = fZ[i];
1633 fClusterIndex20[slice][fN20[slice]]=i;
1634 fN20[slice]++;
1635 }
1636 }
e43c066c 1637 }
1d4090b7 1638
1639 //
1640 // consistency check
1641 //
1642 for (Int_t i=0;i<fN-1;i++){
1643 if (fZ[i]>fZ[i+1]){
ae00569a 1644 printf("Bug\n");
e43c066c 1645 }
1646 }
1d4090b7 1647 //
1648 for (Int_t slice=0;slice<21;slice++)
1649 for (Int_t i=0;i<fN20[slice]-1;i++){
1650 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1651 printf("Bug\n");
1d4090b7 1652 }
1653 }
1654
1655
e43c066c 1656}
44347160 1657//------------------------------------------------------------------------
e43c066c 1658Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1659 //--------------------------------------------------------------------
1660 // This function returns the index of the nearest cluster
1661 //--------------------------------------------------------------------
1662 Int_t ncl=0;
1663 const Float_t *zcl;
1664 if (fCurrentSlice<0) {
1665 ncl = fN;
1666 zcl = fZ;
1667 }
1668 else{
1669 ncl = fNcs;
1670 zcl = fZcs;;
1671 }
1672
1673 if (ncl==0) return 0;
1674 Int_t b=0, e=ncl-1, m=(b+e)/2;
1675 for (; b<e; m=(b+e)/2) {
1676 // if (z > fClusters[m]->GetZ()) b=m+1;
1677 if (z > zcl[m]) b=m+1;
1678 else e=m;
1679 }
1680 return m;
1681}
44347160 1682//------------------------------------------------------------------------
1c97ce2f 1683Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1684 //--------------------------------------------------------------------
1685 // This function computes the rectangular road for this track
1686 //--------------------------------------------------------------------
1687
1688
1689 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1690 // take into account the misalignment: propagate track to misaligned detector plane
1691 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1692
1693 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1694 TMath::Sqrt(track->GetSigmaZ2() +
1695 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1696 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1697 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1698 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1699 TMath::Sqrt(track->GetSigmaY2() +
1700 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1701 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1702 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1703
1704 // track at boundary between detectors, enlarge road
1705 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1706 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1707 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1708 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1709 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1710 Float_t tgl = TMath::Abs(track->GetTgl());
1711 if (tgl > 1.) tgl=1.;
1712 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1713 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1714 Float_t snp = TMath::Abs(track->GetSnp());
1715 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1716 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1717 } // boundary
1718
1719 // add to the road a term (up to 2-3 mm) to deal with misalignments
1720 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1721 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1722
1723 Double_t r = fgLayers[ilayer].GetR();
1724 zmin = track->GetZ() - dz;
1725 zmax = track->GetZ() + dz;
1726 ymin = track->GetY() + r*det.GetPhi() - dy;
1727 ymax = track->GetY() + r*det.GetPhi() + dy;
1728
1729 // bring track back to idead detector plane
1730 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1731
1732 return kTRUE;
1733}
1734//------------------------------------------------------------------------
e43c066c 1735void AliITStrackerMI::AliITSlayer::
1736SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1737 //--------------------------------------------------------------------
1738 // This function sets the "window"
1739 //--------------------------------------------------------------------
1740
628e7bb0 1741 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1742 fYmin = ymin; fYmax =ymax;
1743 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1744 if (ymiddle<fYB[0]) {
1745 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1746 } else if (ymiddle>fYB[1]) {
1747 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1748 }
ae00569a 1749
e43c066c 1750 //
1751 fCurrentSlice =-1;
1752 // defualt take all
1753 fClustersCs = fClusters;
1754 fClusterIndexCs = fClusterIndex;
1755 fYcs = fY;
1756 fZcs = fZ;
1757 fNcs = fN;
628e7bb0 1758 //
e43c066c 1759 //is in 20 slice?
1760 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1761 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1762 if (slice<0) slice=0;
1763 if (slice>20) slice=20;
1764 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1765 if (isOK) {
1766 fCurrentSlice=slice;
1767 fClustersCs = fClusters20[fCurrentSlice];
1768 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1769 fYcs = fY20[fCurrentSlice];
1770 fZcs = fZ20[fCurrentSlice];
1771 fNcs = fN20[fCurrentSlice];
1772 }
1773 }
1774 //
1775 //is in 10 slice?
1776 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1777 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1778 if (slice<0) slice=0;
1779 if (slice>10) slice=10;
1780 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1781 if (isOK) {
1782 fCurrentSlice=slice;
1783 fClustersCs = fClusters10[fCurrentSlice];
1784 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1785 fYcs = fY10[fCurrentSlice];
1786 fZcs = fZ10[fCurrentSlice];
1787 fNcs = fN10[fCurrentSlice];
1788 }
1789 }
1790 //
1791 //is in 5 slice?
1792 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1793 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1794 if (slice<0) slice=0;
1795 if (slice>5) slice=5;
1796 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1797 if (isOK) {
e43c066c 1798 fCurrentSlice=slice;
1799 fClustersCs = fClusters5[fCurrentSlice];
1800 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1801 fYcs = fY5[fCurrentSlice];
1802 fZcs = fZ5[fCurrentSlice];
1803 fNcs = fN5[fCurrentSlice];
1804 }
1805 }
628e7bb0 1806 //
e43c066c 1807 fI=FindClusterIndex(zmin); fZmax=zmax;
1808 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1809 fSkip = 0;
1810 fAccepted =0;
6518a6c5 1811
1812 return;
e43c066c 1813}
44347160 1814//------------------------------------------------------------------------
628e7bb0 1815Int_t AliITStrackerMI::AliITSlayer::
1816FindDetectorIndex(Double_t phi, Double_t z) const {
1817 //--------------------------------------------------------------------
1818 //This function finds the detector crossed by the track
1819 //--------------------------------------------------------------------
31fb8575 1820 Double_t dphi;
1821 if (fZOffset<0) // old geometry
1822 dphi = -(phi-fPhiOffset);
1823 else // new geometry
1824 dphi = phi-fPhiOffset;
1825
6518a6c5 1826
628e7bb0 1827 if (dphi < 0) dphi += 2*TMath::Pi();
1828 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1829 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1830 if (np>=fNladders) np-=fNladders;
1831 if (np<0) np+=fNladders;
1832
6518a6c5 1833
628e7bb0 1834 Double_t dz=fZOffset-z;
6518a6c5 1835 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1836 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1837 if (nz>=fNdetectors) return -1;
1838 if (nz<0) return -1;
1839
23197852 1840 // ad hoc correction for 3rd ladder of SDD inner layer,
1841 // which is reversed (rotated by pi around local y)
1842 // this correction is OK only from AliITSv11Hybrid onwards
1843 if (GetR()>12. && GetR()<20.) { // SDD inner
1844 if(np==2) { // 3rd ladder
1845 nz = (fNdetectors-1) - nz;
1846 }
1847 }
1848 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1849
1850
628e7bb0 1851 return np*fNdetectors + nz;
1852}
44347160 1853//------------------------------------------------------------------------
ae00569a 1854const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1855{
e43c066c 1856 //--------------------------------------------------------------------
1857 // This function returns clusters within the "window"
1858 //--------------------------------------------------------------------
1859
ae00569a 1860 if (fCurrentSlice<0) {
e43c066c 1861 Double_t rpi2 = 2.*fR*TMath::Pi();
1862 for (Int_t i=fI; i<fImax; i++) {
1863 Double_t y = fY[i];
1864 if (fYmax<y) y -= rpi2;
1d4090b7 1865 if (fYmin>y) y += rpi2;
e43c066c 1866 if (y<fYmin) continue;
1867 if (y>fYmax) continue;
1868 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1869 ci=i;
ae00569a 1870 if (!test) fI=i+1;
e43c066c 1871 return fClusters[i];
1872 }
ae00569a 1873 } else {
e43c066c 1874 for (Int_t i=fI; i<fImax; i++) {
1875 if (fYcs[i]<fYmin) continue;
1876 if (fYcs[i]>fYmax) continue;
1877 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1878 ci=fClusterIndexCs[i];
ae00569a 1879 if (!test) fI=i+1;
e43c066c 1880 return fClustersCs[i];
1881 }
1882 }
1883 return 0;
1884}
44347160 1885//------------------------------------------------------------------------
e43c066c 1886Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1887const {
1888 //--------------------------------------------------------------------
afd25725 1889 // This function returns the layer thickness at this point (units X0)
e43c066c 1890 //--------------------------------------------------------------------
1891 Double_t d=0.0085;
e50912db 1892 x0=AliITSRecoParam::GetX0Air();
e43c066c 1893 if (43<fR&&fR<45) { //SSD2
1894 Double_t dd=0.0034;
1895 d=dd;
1896 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1897 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1898 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1899 for (Int_t i=0; i<12; i++) {
1900 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1901 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1902 d+=0.0034;
1903 break;
1904 }
1905 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1906 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1907 d+=0.0034;
1908 break;
1909 }
1910 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1911 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1912 }
1913 } else
1914 if (37<fR&&fR<41) { //SSD1
1915 Double_t dd=0.0034;
1916 d=dd;
1917 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1918 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1919 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1920 for (Int_t i=0; i<11; i++) {
1921 if (TMath::Abs(z-3.9*i)<0.15) {
1922 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1923 d+=dd;
1924 break;
1925 }
1926 if (TMath::Abs(z+3.9*i)<0.15) {
1927 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1928 d+=dd;
1929 break;
1930 }
1931 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1932 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1933 }
1934 } else
1935 if (13<fR&&fR<26) { //SDD
1936 Double_t dd=0.0033;
1937 d=dd;
1938 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1939
1940 if (TMath::Abs(y-1.80)<0.55) {
1941 d+=0.016;
1942 for (Int_t j=0; j<20; j++) {
1943 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1944 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1945 }
1946 }
1947 if (TMath::Abs(y+1.80)<0.55) {
1948 d+=0.016;
1949 for (Int_t j=0; j<20; j++) {
1950 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1951 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1952 }
1953 }
1954
1955 for (Int_t i=0; i<4; i++) {
1956 if (TMath::Abs(z-7.3*i)<0.60) {
1957 d+=dd;
1958 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1959 break;
1960 }
1961 if (TMath::Abs(z+7.3*i)<0.60) {
1962 d+=dd;
1963 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1964 break;
1965 }
1966 }
1967 } else
1968 if (6<fR&&fR<8) { //SPD2
1969 Double_t dd=0.0063; x0=21.5;
1970 d=dd;
1971 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 1972 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 1973 } else
1974 if (3<fR&&fR<5) { //SPD1
1975 Double_t dd=0.0063; x0=21.5;
1976 d=dd;
1977 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 1978 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 1979 }
1980
1981 return d;
1982}
44347160 1983//------------------------------------------------------------------------
23197852 1984AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
1985fR(det.fR),
1c97ce2f 1986fRmisal(det.fRmisal),
23197852 1987fPhi(det.fPhi),
1988fSinPhi(det.fSinPhi),
1989fCosPhi(det.fCosPhi),
1990fYmin(det.fYmin),
1991fYmax(det.fYmax),
1992fZmin(det.fZmin),
1993fZmax(det.fZmax),
1994fIsBad(det.fIsBad),
1995fNChips(det.fNChips),
1996fChipIsBad(det.fChipIsBad)
1997{
1998 //Copy constructor
1999}
2000//------------------------------------------------------------------------
2001void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2002 AliITSDetTypeRec *detTypeRec)
2003{
2004 //--------------------------------------------------------------------
2005 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2006 //--------------------------------------------------------------------
2007
2008 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2009 // while in the tracker they start from 0 for each layer
2010 for(Int_t il=0; il<ilayer; il++)
2011 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2012
2013 Int_t detType;
2014 if (ilayer==0 || ilayer==1) { // ---------- SPD
2015 detType = 0;
2016 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2017 detType = 1;
2018 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2019 detType = 2;
2020 } else {
2021 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2022 return;
2023 }
2024
2025 // Get calibration from AliITSDetTypeRec
2026 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2027 calib->SetModuleIndex(idet);
23197852 2028 AliITSCalibration *calibSPDdead = 0;
2029 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2030 if (calib->IsBad() ||
2031 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2032 {
2033 SetBad();
359ac74d 2034 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2035 }
2036
2037 // Get segmentation from AliITSDetTypeRec
2038 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2039
2040 // Read info about bad chips
2041 fNChips = segm->GetMaximumChipIndex()+1;
2042 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2043 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2044 fChipIsBad = new Bool_t[fNChips];
2045 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2046 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2047 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2048 }
2049
2050 return;
2051}
2052//------------------------------------------------------------------------
e50912db 2053Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2054{
2055 //--------------------------------------------------------------------
afd25725 2056 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2057 //--------------------------------------------------------------------
e43c066c 2058
e50912db 2059 if(fUseTGeo!=0) {
2060 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2061 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2062 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2063 }
2064
afd25725 2065 // beam pipe
e50912db 2066 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2067 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2068
2069 // layers
2070 Double_t x0=0;
e43c066c 2071 Double_t xn=fgLayers[fI].GetR();
2072 for (Int_t i=0; i<fI; i++) {
2073 Double_t xi=fgLayers[i].GetR();
e50912db 2074 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2075 d+=dLayer*xi*xi;
e43c066c 2076 }
2077
afd25725 2078 // shields
e43c066c 2079 if (fI>1) {
e50912db 2080 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2081 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2082 }
e43c066c 2083 if (fI>3) {
e50912db 2084 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2085 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2086 }
e43c066c 2087 return d/(xn*xn);
2088}
44347160 2089//------------------------------------------------------------------------
e43c066c 2090Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2091 //-------------------------------------------------------------------
e43c066c 2092 // This function returns number of clusters within the "window"
2093 //--------------------------------------------------------------------
2094 Int_t ncl=0;
2095 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2096 const AliITSRecPoint *c=fClusters[i];
e43c066c 2097 if (c->GetZ() > fZmax) break;
2098 if (c->IsUsed()) continue;
2099 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2100 Double_t y=fR*det.GetPhi() + c->GetY();
2101
2102 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2103 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2104
2105 if (y<fYmin) continue;
2106 if (y>fYmax) continue;
2107 ncl++;
2108 }
2109 return ncl;
2110}
44347160 2111//------------------------------------------------------------------------
ae00569a 2112Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2113 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2114{
e43c066c 2115 //--------------------------------------------------------------------
ae00569a 2116 // This function refits the track "track" at the position "x" using
2117 // the clusters from "clusters"
ef7253ac 2118 // If "extra"==kTRUE,
ae00569a 2119 // the clusters from overlapped modules get attached to "track"
7167ae53 2120 // If "planeff"==kTRUE,
2121 // special approach for plane efficiency evaluation is applyed
e43c066c 2122 //--------------------------------------------------------------------
6518a6c5 2123
e50912db 2124 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2125 Int_t k;
e50912db 2126 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2127 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2128 for (k=0; k<nc; k++) {
ae00569a 2129 Int_t idx=clusters->GetClusterIndex(k);
2130 Int_t ilayer=(idx&0xf0000000)>>28;
2131 index[ilayer]=idx;
e43c066c 2132 }
67c1e979 2133
7167ae53 2134 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2135}
44347160 2136//------------------------------------------------------------------------
ae00569a 2137Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2138 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2139{
67c1e979 2140 //--------------------------------------------------------------------
ae00569a 2141 // This function refits the track "track" at the position "x" using
67c1e979 2142 // the clusters from array
ae00569a 2143 // If "extra"==kTRUE,
2144 // the clusters from overlapped modules get attached to "track"
7167ae53 2145 // If "planeff"==kTRUE,
2146 // special approach for plane efficiency evaluation is applyed
67c1e979 2147 //--------------------------------------------------------------------
e50912db 2148 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2149 Int_t k;
e50912db 2150 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2151 //
e50912db 2152 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2153 index[k]=clusters[k];
67c1e979 2154 }
2155
afd25725 2156 // special for cosmics: check which the innermost layer crossed
2157 // by the track
2158 Int_t innermostlayer=5;
ae00569a 2159 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2160 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2161 if(drphi < fgLayers[innermostlayer].GetR()) break;
2162 }
2163 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2164
ae00569a 2165 Int_t modstatus=1; // found
2166 Float_t xloc,zloc;
67c1e979 2167 Int_t from, to, step;
ae00569a 2168 if (xx > track->GetX()) {
e50912db 2169 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2170 step=+1;
2171 } else {
e50912db 2172 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2173 step=-1;
2174 }
ae00569a 2175 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2176
ae00569a 2177 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2178 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2179 Double_t r=layer.GetR();
afd25725 2180 if (step<0 && xx>r) break;
2181
2182 // material between SSD and SDD, SDD and SPD
6518a6c5 2183 Double_t hI=ilayer-0.5*step;
e50912db 2184 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2185 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2186 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2187 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2188
2189 // remember old position [SR, GSI 18.02.2003]
2190 Double_t oldX=0., oldY=0., oldZ=0.;
ae00569a 2191 if (track->IsStartedTimeIntegral() && step==1) {
d1181f10 2192 if (!track->GetGlobalXYZat(track->GetX(),oldX,oldY,oldZ)) return kFALSE;
67c1e979 2193 }
2194 //
ae00569a 2195
afd25725 2196 Double_t oldGlobXYZ[3];
d1181f10 2197 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2198
8602c008 2199 Double_t phi,z;
ae00569a 2200 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2201
67c1e979 2202 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2203
2204 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2205 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2206 if (skip==2) {
2207 // propagate to the layer radius
d1181f10 2208 Double_t xToGo; if (!track->GetLocalXat(r,xToGo)) return kFALSE;
2209 if (!track->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return kFALSE;
6518a6c5 2210 // apply correction for material of the current layer
ae00569a 2211 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2212 modstatus = 4; // out in z
d1181f10 2213 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2214 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2215 }
6518a6c5 2216 // track time update [SR, GSI 17.02.2003]
ae00569a 2217 if (track->IsStartedTimeIntegral() && step==1) {
6518a6c5 2218 Double_t newX, newY, newZ;
d1181f10 2219 if (!track->GetGlobalXYZat(track->GetX(),newX,newY,newZ)) return kFALSE;
6518a6c5 2220 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2221 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2222 track->AddTimeStep(TMath::Sqrt(dL2));
6518a6c5 2223 }
2224 continue;
2225 }
2226
e50912db 2227 if (idet<0) return kFALSE;
ae00569a 2228
67c1e979 2229 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2230 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2231
ae00569a 2232 track->SetDetectorIndex(idet);
d1181f10 2233 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2234
23197852 2235 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2236
2237 const AliITSRecPoint *clAcc=0;
44347160 2238 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2239
6518a6c5 2240 Int_t idx=index[ilayer];
ae00569a 2241 if (idx>=0) { // cluster in this layer
2242 modstatus = 6; // no refit
2243 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2244 if (cl) {
2245 if (idet != cl->GetDetectorIndex()) {
2246 idet=cl->GetDetectorIndex();
a5d0fae6 2247 const AliITSdetector &detc=layer.GetDetector(idet);
2248 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2249 track->SetDetectorIndex(idet);
d1181f10 2250 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2251 }
ae00569a 2252 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2253 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2254 if (chi2<maxchi2) {
2255 clAcc=cl;
2256 maxchi2=chi2;
2257 modstatus = 1; // found
2258 } else {
7167ae53 2259 return kFALSE; //
ae00569a 2260 }
2261 }
2262 } else { // no cluster in this layer
2263 if (skip==1) {
2264 modstatus = 3; // skipped
0ed58a47 2265 // Plane Eff determination:
2266 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2267 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2268 UseTrackForPlaneEff(track,ilayer);
7167ae53 2269 }
ae00569a 2270 } else {
2271 modstatus = 5; // no cls in road
2272 // check dead
1c97ce2f 2273 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2274 dz = 0.5*(zmax-zmin);
2275 dy = 0.5*(ymax-ymin);
2276 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2277 if (dead==1) modstatus = 7; // holes in z in SPD
23197852 2278 if (dead==2 || dead==3) modstatus = 2; // dead from OCDB
ae00569a 2279 }
e43c066c 2280 }
ae00569a 2281
2282 if (clAcc) {
2283 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2284 track->SetSampledEdx(clAcc->GetQ(),track->GetNumberOfClusters()-1);
e43c066c 2285 }
ae00569a 2286 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2287
2288
2289 if (extra) { // search for extra clusters in overlapped modules
2290 AliITStrackV2 tmp(*track);
1c97ce2f 2291 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2292 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2293
2294 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2295 Int_t idetExtra=-1;
a5d0fae6 2296 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2297 Double_t tolerance=0.1;
ae00569a 2298 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2299 // only clusters in another module! (overlaps)
2300 idetExtra = clExtra->GetDetectorIndex();
2301 if (idet == idetExtra) continue;
2302
a5d0fae6 2303 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2304
1c97ce2f 2305 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2306 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2307 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2308 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2309
2310 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2311 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2312 }
2313 if (cci>=0) {
2314 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2315 track->SetExtraModule(ilayer,idetExtra);
2316 }
2317 } // end search for extra clusters in overlapped modules
1c97ce2f 2318
afd25725 2319 // Correct for material of the current layer
ae00569a 2320 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2321
2322 // track time update [SR, GSI 17.02.2003]
ae00569a 2323 if (track->IsStartedTimeIntegral() && step==1) {
e43c066c 2324 Double_t newX, newY, newZ;
d1181f10 2325 if (!track->GetGlobalXYZat(track->GetX(),newX,newY,newZ)) return kFALSE;
e43c066c 2326 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2327 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2328 track->AddTimeStep(TMath::Sqrt(dL2));
e43c066c 2329 }
2330 //
2331
ae00569a 2332 } // end loop on layers
2333
2334 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2335
e43c066c 2336 return kTRUE;
2337}
44347160 2338//------------------------------------------------------------------------
15dd636f 2339Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2340{
2341 //
2342 // calculate normalized chi2
2343 // return NormalizedChi2(track,0);
2344 Float_t chi2 = 0;
2345 Float_t sum=0;
2346 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2347 // track->fdEdxMismatch=0;
2348 Float_t dedxmismatch =0;
2349 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2350 if (mode<100){
2351 for (Int_t i = 0;i<6;i++){
b9671574 2352 if (track->GetClIndex(i)>0){
e43c066c 2353 Float_t cerry, cerrz;
2354 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2355 else
b9671574 2356 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2357 cerry*=cerry;
2358 cerrz*=cerrz;
b9671574 2359 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2360 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2361 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2362 if (ratio<0.5) {
2363 cchi2+=(0.5-ratio)*10.;
2364 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2365 dedxmismatch+=(0.5-ratio)*10.;
2366 }
2367 }
2368 if (i<2 ||i>3){
b9671574 2369 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2370 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2371 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2372 if (i<2) chi2+=2*cl->GetDeltaProbability();
2373 }
2374 chi2+=cchi2;
2375 sum++;
2376 }
2377 }
b9671574 2378 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2379 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2380 }
2381 }
2382 else{
2383 for (Int_t i = 0;i<4;i++){
b9671574 2384 if (track->GetClIndex(i)>0){
e43c066c 2385 Float_t cerry, cerrz;
2386 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2387 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2388 cerry*=cerry;
2389 cerrz*=cerrz;
b9671574 2390 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2391 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2392 sum++;
2393 }
2394 }
2395 for (Int_t i = 4;i<6;i++){
b9671574 2396 if (track->GetClIndex(i)>0){
e43c066c 2397 Float_t cerry, cerrz;
2398 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2399 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2400 cerry*=cerry;
2401 cerrz*=cerrz;
2402 Float_t cerryb, cerrzb;
2403 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2404 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2405 cerryb*=cerryb;
2406 cerrzb*=cerrzb;
b9671574 2407 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2408 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2409 sum++;
2410 }
2411 }
2412 }
b9671574 2413 if (track->GetESDtrack()->GetTPCsignal()>85){
2414 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2415 if (ratio<0.5) {
2416 chi2+=(0.5-ratio)*5.;
2417 }
2418 if (ratio>2){
2419 chi2+=(ratio-2.0)*3;
2420 }
2421 }
2422 //
b9671574 2423 Double_t match = TMath::Sqrt(track->GetChi22());
2424 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2425 if (!track->GetConstrain()) {
2426 if (track->GetNumberOfClusters()>2) {
2427 match/=track->GetNumberOfClusters()-2.;
2428 } else {
2429 match=0;
2430 }
2431 }
e43c066c 2432 if (match<0) match=0;
b9671574 2433 Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
2434 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2435 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2436 1./(1.+track->GetNSkipped()));
e43c066c 2437
2438 return normchi2;
2439}
44347160 2440//------------------------------------------------------------------------
15dd636f 2441Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
e43c066c 2442{
2443 //
2444 // return matching chi2 between two tracks
d1181f10 2445 Double_t largeChi2=1000.;
2446
15dd636f 2447 AliITStrackMI track3(*track2);
d1181f10 2448 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2449 TMatrixD vec(5,1);
6c94f330 2450 vec(0,0)=track1->GetY() - track3.GetY();
2451 vec(1,0)=track1->GetZ() - track3.GetZ();
2452 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2453 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2454 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2455 //
2456 TMatrixD cov(5,5);
6c94f330 2457 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2458 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2459 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2460 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2461 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2462
6c94f330 2463 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2464 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2465 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2466 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2467 //
6c94f330 2468 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2469 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2470 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2471 //
6c94f330 2472 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2473 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2474 //
6c94f330 2475 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2476
2477 cov.Invert();
2478 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2479 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2480 return chi2(0,0);
2481}
44347160 2482//------------------------------------------------------------------------
6518a6c5 2483Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr)
e43c066c 2484{
2485 //
afd25725 2486 // return probability that given point (characterized by z position and error)
2487 // is in SPD dead zone
e43c066c 2488 //
afd25725 2489 Double_t probability = 0.;
e43c066c 2490 Double_t absz = TMath::Abs(zpos);
afd25725 2491 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2492 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2493 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2494 Double_t zmin, zmax;
2495 if (zpos<-6.) { // dead zone at z = -7
e50912db 2496 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2497 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2498 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2499 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2500 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2501 } else if (absz<2.) { // dead zone at z = 0
e50912db 2502 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2503 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2504 } else {
2505 zmin = 0.;
2506 zmax = 0.;
e43c066c 2507 }
afd25725 2508 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2509 // dead zone)
2510 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2511 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2512 return probability;
2513}
44347160 2514//------------------------------------------------------------------------
15dd636f 2515Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
e43c066c 2516{
2517 //
2518 // calculate normalized chi2
2519 Float_t chi2[6];
2520 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2521 Float_t ncl = 0;
2522 for (Int_t i = 0;i<6;i++){
b9671574 2523 if (TMath::Abs(track->GetDy(i))>0){
2524 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2525 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2526 ncl++;
2527 }
2528 else{chi2[i]=10000;}
2529 }
2530 Int_t index[6];
2531 TMath::Sort(6,chi2,index,kFALSE);
2532 Float_t max = float(ncl)*fac-1.;
2533 Float_t sumchi=0, sumweight=0;
2534 for (Int_t i=0;i<max+1;i++){
2535 Float_t weight = (i<max)?1.:(max+1.-i);
2536 sumchi+=weight*chi2[index[i]];
2537 sumweight+=weight;
2538 }
2539 Double_t normchi2 = sumchi/sumweight;
2540 return normchi2;
2541}
44347160 2542//------------------------------------------------------------------------
15dd636f 2543Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
e43c066c 2544{
2545 //
2546 // calculate normalized chi2
2547 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2548 Int_t npoints = 0;
2549 Double_t res =0;
2550 for (Int_t i=0;i<6;i++){
b9671574 2551 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2552 Double_t sy1 = forwardtrack->GetSigmaY(i);
2553 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2554 Double_t sy2 = backtrack->GetSigmaY(i);
2555 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2556 if (i<2){ sy2=1000.;sz2=1000;}
2557 //
b9671574 2558 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2559 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2560 //
2561 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2562 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2563 //
2564 res+= nz0*nz0+ny0*ny0;
2565 npoints++;
2566 }
2567 if (npoints>1) return
6c23ffed 2568 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2569 //2*forwardtrack->fNUsed+
b9671574 2570 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2571 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2572 return 1000;
2573}
44347160 2574//------------------------------------------------------------------------
e43c066c 2575Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2576 //--------------------------------------------------------------------
2577 // Return pointer to a given cluster
2578 //--------------------------------------------------------------------
2579 Int_t l=(index & 0xf0000000) >> 28;
2580 Int_t c=(index & 0x0fffffff) >> 00;
2581 return fgLayers[l].GetWeight(c);
2582}
44347160 2583//------------------------------------------------------------------------
15dd636f 2584void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
e43c066c 2585{
2586 //---------------------------------------------
2587 // register track to the list
628e7bb0 2588 //
b9671574 2589 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2590 //
2591 //
e43c066c 2592 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2593 Int_t index = track->GetClusterIndex(icluster);
2594 Int_t l=(index & 0xf0000000) >> 28;
2595 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2596 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2597 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2598 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2599 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2600 break;
2601 }
2602 }
2603 }
2604}
44347160 2605//------------------------------------------------------------------------
15dd636f 2606void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
e43c066c 2607{
2608 //---------------------------------------------
2609 // unregister track from the list
2610 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2611 Int_t index = track->GetClusterIndex(icluster);
2612 Int_t l=(index & 0xf0000000) >> 28;
2613 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2614 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2615 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2616 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2617 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2618 }
2619 }
2620 }
2621}
44347160 2622//------------------------------------------------------------------------
00a7cc50 2623Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2624{
2625 //-------------------------------------------------------------
2626 //get number of shared clusters
2627 //-------------------------------------------------------------
2628 Float_t shared=0;
2629 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2630 // mean number of clusters
2631 Float_t *ny = GetNy(id), *nz = GetNz(id);
2632
2633
2634 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2635 Int_t index = track->GetClusterIndex(icluster);
2636 Int_t l=(index & 0xf0000000) >> 28;
2637 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2638 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2639 if (ny[l]==0){
2640 printf("problem\n");
2641 }
00a7cc50 2642 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2643 Float_t weight=1;
2644 //
2645 Float_t deltan = 0;
2646 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2647 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2648 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2649 if (l<2 || l>3){
2650 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2651 }
2652 else{
2653 deltan = (cl->GetNz()-nz[l]);
2654 }
2655 if (deltan>2.0) continue; // extended - highly probable shared cluster
2656 weight = 2./TMath::Max(3.+deltan,2.);
2657 //
2658 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2659 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2660 list[l]=index;
00a7cc50 2661 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2662 shared+=weight;
2663 break;
2664 }
2665 }
2666 }
b9671574 2667 track->SetNUsed(shared);
e43c066c 2668 return shared;
2669}
44347160 2670//------------------------------------------------------------------------
15dd636f 2671Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2672{
2673 //
2674 // find first shared track
2675 //
2676 // mean number of clusters
2677 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2678 //
2679 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2680 Int_t sharedtrack=100000;
2681 Int_t tracks[24],trackindex=0;
2682 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2683 //
2684 for (Int_t icluster=0;icluster<6;icluster++){
2685 if (clusterlist[icluster]<0) continue;
2686 Int_t index = clusterlist[icluster];
2687 Int_t l=(index & 0xf0000000) >> 28;
2688 Int_t c=(index & 0x0fffffff) >> 00;
2689 if (ny[l]==0){
2690 printf("problem\n");
2691 }
b9671574 2692 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2693 //if (l>3) continue;
00a7cc50 2694 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2695 //
2696 Float_t deltan = 0;
2697 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2698 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2699 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2700 if (l<2 || l>3){
2701 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2702 }
2703 else{
2704 deltan = (cl->GetNz()-nz[l]);
2705 }
2706 if (deltan>2.0) continue; // extended - highly probable shared cluster
2707 //
2708 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2709 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2710 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2711 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2712 trackindex++;
2713 }
2714 }
2715 }
2716 if (trackindex==0) return -1;
2717 if (trackindex==1){
2718 sharedtrack = tracks[0];
2719 }else{
2720 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2721 else{
2722 //
a5d0fae6 2723 Int_t tracks2[24], cluster[24];
2724 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2725 Int_t index =0;
2726 //
2727 for (Int_t i=0;i<trackindex;i++){
2728 if (tracks[i]<0) continue;
a5d0fae6 2729 tracks2[index] = tracks[i];
e43c066c 2730 cluster[index]++;
2731 for (Int_t j=i+1;j<trackindex;j++){
2732 if (tracks[j]<0) continue;
2733 if (tracks[j]==tracks[i]){
2734 cluster[index]++;
2735 tracks[j]=-1;
2736 }
2737 }
2738 index++;
2739 }
2740 Int_t max=0;
2741 for (Int_t i=0;i<index;i++){
2742 if (cluster[index]>max) {
a5d0fae6 2743 sharedtrack=tracks2[index];
e43c066c 2744 max=cluster[index];
2745 }
2746 }
2747 }
2748 }
2749
2750 if (sharedtrack>=100000) return -1;
2751 //
2752 // make list of overlaps
2753 shared =0;
2754 for (Int_t icluster=0;icluster<6;icluster++){
2755 if (clusterlist[icluster]<0) continue;
2756 Int_t index = clusterlist[icluster];
2757 Int_t l=(index & 0xf0000000) >> 28;
2758 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2759 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2760 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2761 if (l==0 || l==1){
2762 if (cl->GetNy()>2) continue;
2763 if (cl->GetNz()>2) continue;
2764 }
2765 if (l==4 || l==5){
2766 if (cl->GetNy()>3) continue;
2767 if (cl->GetNz()>3) continue;
2768 }
2769 //
2770 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2771 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2772 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2773 overlist[l]=index;
2774 shared++;
2775 }
2776 }
2777 }
2778 return sharedtrack;
2779}
44347160 2780//------------------------------------------------------------------------
15dd636f 2781AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2782 //
2783 // try to find track hypothesys without conflicts
2784 // with minimal chi2;
2785 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2786 Int_t entries1 = arr1->GetEntriesFast();
2787 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2788 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2789 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2790 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2791 //
15dd636f 2792 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2793 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2794 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2795
2796 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2797 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2798 UnRegisterClusterTracks(track,trackID1);
2799 }
2800 //
2801 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2802 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2803 UnRegisterClusterTracks(track,trackID2);
2804 }
2805 Int_t index1=0;
2806 Int_t index2=0;
2807 Float_t maxconflicts=6;
2808 Double_t maxchi2 =1000.;
2809 //
2810 // get weight of hypothesys - using best hypothesy
2811 Double_t w1,w2;
2812
2813 Int_t list1[6],list2[6];
00a7cc50 2814 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2815 RegisterClusterTracks(track10,trackID1);
2816 RegisterClusterTracks(track20,trackID2);
2817 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2818 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2819 UnRegisterClusterTracks(track10,trackID1);
2820 UnRegisterClusterTracks(track20,trackID2);
2821 //
2822 // normalized chi2
2823 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2824 Float_t nerry[6],nerrz[6];
2825 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2826 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2827 for (Int_t i=0;i<6;i++){
2828 if ( (erry1[i]>0) && (erry2[i]>0)) {
2829 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2830 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2831 }else{
2832 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2833 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2834 }
b9671574 2835 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2836 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2837 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2838 ncl1++;
2839 }
b9671574 2840 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2841 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2842 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2843 ncl2++;
2844 }
2845 }
2846 chi21/=ncl1;
2847 chi22/=ncl2;
2848 //
2849 //
b9671574 2850 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2851 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2852 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2853 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2854 //
2855 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2856 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2857 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2858 );
2859 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2860 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2861 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2862 );
2863
2864 Double_t sumw = w1+w2;
2865 w1/=sumw;
2866 w2/=sumw;
2867 if (w1<w2*0.5) {
2868 w1 = (d2+0.5)/(d1+d2+1.);
2869 w2 = (d1+0.5)/(d1+d2+1.);
2870 }
2871 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2872 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2873 //
2874 // get pair of "best" hypothesys
2875 //
2876 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2877 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2878
2879 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2880 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2881 //if (track1->fFakeRatio>0) continue;
2882 RegisterClusterTracks(track1,trackID1);
2883 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2884 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2885
2886 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2887 //if (track2->fFakeRatio>0) continue;
2888 Float_t nskipped=0;
2889 RegisterClusterTracks(track2,trackID2);
e43c066c 2890 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2891 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2892 UnRegisterClusterTracks(track2,trackID2);
2893 //
b9671574 2894 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2895 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2896 if (nskipped>0.5) continue;
2897 //
2898 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2899 if (conflict1+1<cconflict1) continue;
2900 if (conflict2+1<cconflict2) continue;
2901 Float_t conflict=0;
2902 Float_t sumchi2=0;
2903 Float_t sum=0;
2904 for (Int_t i=0;i<6;i++){
2905 //
2906 Float_t c1 =0.; // conflict coeficients
2907 Float_t c2 =0.;
2908 if (clist1[i]&&clist2[i]){
2909 Float_t deltan = 0;
2910 if (i<2 || i>3){
2911 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2912 }
2913 else{
2914 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2915 }
2916 c1 = 2./TMath::Max(3.+deltan,2.);
2917 c2 = 2./TMath::Max(3.+deltan,2.);
2918 }
2919 else{
2920 if (clist1[i]){
2921 Float_t deltan = 0;
2922 if (i<2 || i>3){
2923 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2924 }
2925 else{
2926 deltan = (clist1[i]->GetNz()-nz1[i]);
2927 }
2928 c1 = 2./TMath::Max(3.+deltan,2.);
2929 c2 = 0;
2930 }
2931
2932 if (clist2[i]){
2933 Float_t deltan = 0;
2934 if (i<2 || i>3){
2935 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2936 }
2937 else{
2938 deltan = (clist2[i]->GetNz()-nz2[i]);
2939 }
2940 c2 = 2./TMath::Max(3.+deltan,2.);
2941 c1 = 0;
2942 }
2943 }
2944 //
a5d0fae6 2945 chi21=0;chi22=0;
b9671574 2946 if (TMath::Abs(track1->GetDy(i))>0.) {
2947 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2948 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2949 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2950 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2951 }else{
b9671574 2952 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2953 }
2954 //
b9671574 2955 if (TMath::Abs(track2->GetDy(i))>0.) {
2956 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2957 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2958 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2959 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2960 }
2961 else{
b9671574 2962 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 2963 }
2964 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
2965 if (chi21>0) sum+=w1;
2966 if (chi22>0) sum+=w2;
2967 conflict+=(c1+c2);
2968 }
b9671574 2969 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
2970 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 2971 Double_t normchi2 = 2*conflict+sumchi2/sum;
2972 if ( normchi2 <maxchi2 ){
2973 index1 = itrack1;
2974 index2 = itrack2;
2975 maxconflicts = conflict;
2976 maxchi2 = normchi2;
2977 }
2978 }
2979 UnRegisterClusterTracks(track1,trackID1);
2980 }
2981 //
2982 // if (maxconflicts<4 && maxchi2<th0){
2983 if (maxchi2<th0*2.){
b9671574 2984 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 2985 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 2986 track1->SetChi2MIP(5,maxconflicts);
2987 track1->SetChi2MIP(6,maxchi2);
2988 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 2989 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 2990 track1->SetChi2MIP(8,index1);
e43c066c 2991 fBestTrackIndex[trackID1] =index1;
2992 UpdateESDtrack(track1, AliESDtrack::kITSin);
2993 }
b9671574 2994 else if (track10->GetChi2MIP(0)<th1){
2995 track10->SetChi2MIP(5,maxconflicts);
2996 track10->SetChi2MIP(6,maxchi2);
e43c066c 2997 // track10->UpdateESDtrack(AliESDtrack::kITSin);
2998 UpdateESDtrack(track10,AliESDtrack::kITSin);
2999 }
3000
3001 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3002 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3003 UnRegisterClusterTracks(track,trackID1);
3004 }
3005 //
3006 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3007 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3008 UnRegisterClusterTracks(track,trackID2);
3009 }
3010
44347160 3011 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3012 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3013 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3014 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3015 RegisterClusterTracks(track10,trackID1);
3016 }
44347160 3017 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3018 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3019 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3020 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3021 RegisterClusterTracks(track20,trackID2);
3022 }
3023 return track10;
3024
3025}
44347160 3026//------------------------------------------------------------------------
e43c066c 3027void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3028 //--------------------------------------------------------------------
3029 // This function marks clusters assigned to the track
3030 //--------------------------------------------------------------------
3031 AliTracker::UseClusters(t,from);
3032
00a7cc50 3033 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3034 //if (c->GetQ()>2) c->Use();
3035 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3036 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3037 //if (c->GetQ()>2) c->Use();
3038 if (c->GetSigmaZ2()>0.1) c->Use();
3039
3040}
44347160 3041//------------------------------------------------------------------------
15dd636f 3042void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3043{
3044 //------------------------------------------------------------------
3045 // add track to the list of hypothesys
3046 //------------------------------------------------------------------
3047
fddf8459 3048 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3049 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3050 //
3051 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3052 if (!array) {
3053 array = new TObjArray(10);
3054 fTrackHypothesys.AddAt(array,esdindex);
3055 }
3056 array->AddLast(track);
3057}
44347160 3058//------------------------------------------------------------------------
e43c066c 3059void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3060{
3061 //-------------------------------------------------------------------
3062 // compress array of track hypothesys
3063 // keep only maxsize best hypothesys
3064 //-------------------------------------------------------------------
3065 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3066 if (! (fTrackHypothesys.At(esdindex)) ) return;
3067 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3068 Int_t entries = array->GetEntriesFast();
3069 //
3070 //- find preliminary besttrack as a reference
3071 Float_t minchi2=10000;
3072 Int_t maxn=0;
15dd636f 3073 AliITStrackMI * besttrack=0;
e43c066c 3074 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3075 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3076 if (!track) continue;
3077 Float_t chi2 = NormalizedChi2(track,0);
3078 //
b9671574 3079 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3080 track->SetLabel(tpcLabel);
3081 CookdEdx(track);
b9671574 3082 track->SetFakeRatio(1.);
e43c066c 3083 CookLabel(track,0.); //For comparison only
3084 //
44347160 3085 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3086 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3087 if (track->GetNumberOfClusters()<maxn) continue;
3088 maxn = track->GetNumberOfClusters();
3089 if (chi2<minchi2){
3090 minchi2=chi2;
3091 besttrack=track;
3092 }
3093 }
3094 else{
b9671574 3095 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3096 delete array->RemoveAt(itrack);
3097 }
e43c066c 3098 }
3099 }
3100 if (!besttrack) return;
3101 //
3102 //
3103 //take errors of best track as a reference
3104 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3105 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3106 for (Int_t j=0;j<6;j++) {
3107 if (besttrack->GetClIndex(j)>0){
3108 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3109 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3110 ny[j] = besttrack->GetNy(j);
3111 nz[j] = besttrack->GetNz(j);
e43c066c 3112 }
3113 }
3114 //
3115 // calculate normalized chi2
3116 //
3117 Float_t * chi2 = new Float_t[entries];
3118 Int_t * index = new Int_t[entries];
3119 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3120 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3121 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3122 if (track){
b9671574 3123 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3124 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3125 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3126 else{
b9671574 3127 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3128 delete array->RemoveAt(itrack);
3129 }
3130 }
e43c066c 3131 }
3132 }
3133 //
3134 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3135 besttrack = (AliITStrackMI*)array->At(index[0]);
44347160 3136 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3137 for (Int_t j=0;j<6;j++){
3138 if (besttrack->GetClIndex(j)>0){
3139 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3140 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3141 ny[j] = besttrack->GetNy(j);
3142 nz[j] = besttrack->GetNz(j);
e43c066c 3143 }
3144 }
3145 }
3146 //
3147 // calculate one more time with updated normalized errors
3148 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3149 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3150 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3151 if (track){
b9671574 3152 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
44347160 3153 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3154 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3155 else
3156 {
b9671574 3157 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3158 delete array->RemoveAt(itrack);
3159 }
3160 }
e43c066c 3161 }
3162 }
3163 entries = array->GetEntriesFast();
3164 //
628e7bb0 3165 //
e43c066c 3166 if (entries>0){
3167 TObjArray * newarray = new TObjArray();
3168 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3169 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3170 if (besttrack){
3171 //
a5d0fae6 3172 for (Int_t j=0;j<6;j++){
3173 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3174 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3175 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3176 ny[j] = besttrack->GetNy(j);
3177 nz[j] = besttrack->GetNz(j);
e43c066c 3178 }
3179 }
b9671574 3180 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3181 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3182 Float_t minn = besttrack->GetNumberOfClusters()-3;
3183 Int_t accepted=0;
3184 for (Int_t i=0;i<entries;i++){
15dd636f 3185 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3186 if (!track) continue;
3187 if (accepted>maxcut) break;
b9671574 3188 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3189 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3190 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3191 delete array->RemoveAt(index[i]);
3192 continue;
3193 }
e43c066c 3194 }
b9671574 3195 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3196 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3197 if (!shortbest) accepted++;
e43c066c 3198 //
3199 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3200 for (Int_t j=0;j<6;j++){
3201 if (nz[j]==0){
3202 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3203 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3204 ny[j] = track->GetNy(j);
3205 nz[j] = track->GetNz(j);
e43c066c 3206 }
3207 }
3208 }
3209 else{
3210 delete array->RemoveAt(index[i]);
3211 }
3212 }
3213 array->Delete();
3214 delete fTrackHypothesys.RemoveAt(esdindex);
3215 fTrackHypothesys.AddAt(newarray,esdindex);
3216 }
3217 else{
3218 array->Delete();
3219 delete fTrackHypothesys.RemoveAt(esdindex);
3220 }
3221 }
3222 delete [] chi2;
3223 delete [] index;
3224}
44347160 3225//------------------------------------------------------------------------
15dd636f 3226AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3227{
3228 //-------------------------------------------------------------
3229 // try to find best hypothesy
3230 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3231 //-------------------------------------------------------------
3232 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3233 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3234 if (!array) return 0;
3235 Int_t entries = array->GetEntriesFast();
3236 if (!entries) return 0;
3237 Float_t minchi2 = 100000;
15dd636f 3238 AliITStrackMI * besttrack=0;
e43c066c 3239 //
15dd636f 3240 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3241 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3242 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3243 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3244 //
3245 for (Int_t i=0;i<entries;i++){
15dd636f 3246 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3247 if (!track) continue;
628e7bb0 3248 Float_t sigmarfi,sigmaz;
3249 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3250 track->SetDnorm(0,sigmarfi);
3251 track->SetDnorm(1,sigmaz);
628e7bb0 3252 //
b9671574 3253 track->SetChi2MIP(1,1000000);
3254 track->SetChi2MIP(2,1000000);
3255 track->SetChi2MIP(3,1000000);
e43c066c 3256 //
3257 // backtrack
15dd636f 3258 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3259 if (track->GetConstrain()) {
e50912db 3260 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3261 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3262 backtrack->ResetCovariance(10.);
628e7bb0 3263 }else{
6c94f330 3264 backtrack->ResetCovariance(10.);
628e7bb0 3265 }
e43c066c 3266 backtrack->ResetClusters();
628e7bb0 3267
e43c066c 3268 Double_t x = original->GetX();
3269 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3270 //
b9671574 3271 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3272 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3273 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3274 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3275
b9671574 3276 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3277 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3278 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3279
3280
44347160 3281 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3282 //
3283 //forward track - without constraint
15dd636f 3284 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3285 forwardtrack->ResetClusters();
3286 x = track->GetX();
628e7bb0 3287 RefitAt(x,forwardtrack,track);
b9671574 3288 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3289 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3290 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3291
791f9a2a 3292 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3293 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3294 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3295 forwardtrack->SetD(0,track->GetD(0));
3296 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3297 {
3298 Int_t list[6];
00a7cc50 3299 AliITSRecPoint* clist[6];
b9671574 3300 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3301 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3302 }
3303
b9671574 3304 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3305 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3306 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3307 track->SetChi2MIP(3,1000);
e43c066c 3308 continue;
3309 }
b9671574 3310 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3311 //
3312 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3313 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3314 }
3315 if (chi2 < minchi2){
15dd636f 3316 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3317 besttrack = track;
e43c066c 3318 besttrack->SetLabel(track->GetLabel());
b9671574 3319 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3320 minchi2 = chi2;
791f9a2a 3321 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3322 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3323 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3324 }
3325 }
3326 delete backtrack;
3327 delete forwardtrack;
3328 Int_t accepted=0;
3329 for (Int_t i=0;i<entries;i++){
fddf8459 3330 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3331
e43c066c 3332 if (!track) continue;
628e7bb0 3333
44347160 3334 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3335 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3336 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3337 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3338 delete array->RemoveAt(i);
3339 continue;
3340 }
e43c066c 3341 }
3342 else{
3343 accepted++;
3344 }
3345 }
3346 //
3347 array->Compress();
3348 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3349
e43c066c 3350 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3351 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3352 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3353 if (!besttrack) return 0;
b9671574 3354 besttrack->SetChi2MIP(8,0);
e43c066c 3355 fBestTrackIndex[esdindex]=0;
3356 entries = array->GetEntriesFast();
15dd636f 3357 AliITStrackMI *longtrack =0;
e43c066c 3358 minchi2 =1000;
b9671574 3359 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3360 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3361 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3362 if (!track->GetConstrain()) continue;
3363 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3364 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3365 if (track->GetChi2MIP(0)>4.) continue;
3366 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3367 longtrack =track;
3368 }
3369 //if (longtrack) besttrack=longtrack;
3370
3371 Int_t list[6];
00a7cc50 3372 AliITSRecPoint * clist[6];
e43c066c 3373 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3374 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3375 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3376 RegisterClusterTracks(besttrack,esdindex);
3377 }
3378 //
3379 //
3380 if (shared>0.0){
3381 Int_t nshared;
3382 Int_t overlist[6];
3383 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3384 if (sharedtrack>=0){
3385 //
3386 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3387 if (besttrack){
3388 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3389 }
3390 else return 0;
3391 }
3392 }
3393
3394 if (shared>2.5) return 0;
3395 if (shared>1.0) return besttrack;
3396 //
628e7bb0 3397 // Don't sign clusters if not gold track
3398 //
3399 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3400 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3401 //
e43c066c 3402 if (fConstraint[fPass]){
3403 //
3404 // sign clusters
3405 //
3406 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3407 for (Int_t i=0;i<6;i++){
b9671574 3408 Int_t index = besttrack->GetClIndex(i);
e43c066c 3409 if (index<=0) continue;
3410 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3411 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3412 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3413 if (!c) continue;
3414 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3415 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3416 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3417 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3418 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3419 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3420
3421 Bool_t cansign = kTRUE;
3422 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3423 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3424 if (!track) continue;
b9671574 3425 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
3426 if ( (track->GetClIndex(ilayer)>0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3427 cansign = kFALSE;
3428 break;
3429 }
3430 }
3431 if (cansign){
b9671574 3432 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3433 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3434 if (!c->IsUsed()) c->Use();
3435 }
3436 }
3437 }
3438 return besttrack;
3439}
44347160 3440//------------------------------------------------------------------------
e43c066c 3441void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3442{
3443 //
3444 // get "best" hypothesys
628e7bb0 3445 //
e43c066c 3446
3447 Int_t nentries = itsTracks.GetEntriesFast();
3448 for (Int_t i=0;i<nentries;i++){
15dd636f 3449 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3450 if (!track) continue;
3451 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3452 if (!array) continue;
3453 if (array->GetEntriesFast()<=0) continue;
3454 //
15dd636f 3455 AliITStrackMI* longtrack=0;
e43c066c 3456 Float_t minn=0;
3457 Float_t maxchi2=1000;
3458 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3459 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3460 if (!trackHyp) continue;
3461 if (trackHyp->GetGoldV0()) {
3462 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3463 break;
3464 }
a5d0fae6 3465 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3466 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3467 if (fAfterV0){
a5d0fae6 3468 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3469 }
a5d0fae6 3470 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3471 //
3472 if (chi2 > maxchi2) continue;
a5d0fae6 3473 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3474 maxchi2 = chi2;
a5d0fae6 3475 longtrack=trackHyp;
e43c066c 3476 }
628e7bb0 3477 //
3478 //
3479 //
15dd636f 3480 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3481 if (!longtrack) {longtrack = besttrack;}
3482 else besttrack= longtrack;
628e7bb0 3483 //
afd25725 3484 if (besttrack) {
e43c066c 3485 Int_t list[6];
00a7cc50 3486 AliITSRecPoint * clist[6];
e43c066c 3487 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3488 //
b9671574 3489 track->SetNUsed(shared);
3490 track->SetNSkipped(besttrack->GetNSkipped());
3491 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3492 if (shared>0) {
3493 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3494 Int_t nshared;
3495 Int_t overlist[6];
3496 //
3497 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3498 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3499 if (sharedtrack>=0) {
e43c066c 3500 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3501 }
3502 }
afd25725 3503 if (besttrack&&fAfterV0) {
628e7bb0 3504 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3505 }
e43c066c 3506 if (besttrack&&fConstraint[fPass])
3507 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3508 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3509 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3510 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3511 }
3512
3513 }
3514 }
3515}
44347160 3516//------------------------------------------------------------------------
15dd636f 3517void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3518 //--------------------------------------------------------------------
3519 //This function "cooks" a track label. If label<0, this track is fake.
3520 //--------------------------------------------------------------------
3521 Int_t tpcLabel=-1;
3522
b9671574 3523 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3524
b9671574 3525 track->SetChi2MIP(9,0);
e43c066c 3526 Int_t nwrong=0;
3527 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3528 Int_t cindex = track->GetClusterIndex(i);
3529 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3530 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3531 Int_t isWrong=1;
3532 for (Int_t ind=0;ind<3;ind++){
3533 if (tpcLabel>0)
3534 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
3535 }
b9671574 3536 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3537 nwrong+=isWrong;
3538 }
7d43b4c4 3539 Int_t nclusters = track->GetNumberOfClusters();
3540 if (nclusters > 0) //PH Some tracks don't have any cluster
3541 track->SetFakeRatio(double(nwrong)/double(nclusters));
e43c066c 3542 if (tpcLabel>0){
b9671574 3543 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
e43c066c 3544 else
b9671574 3545 track->SetLabel(tpcLabel);
e43c066c 3546 }
3547
3548}
44347160 3549//------------------------------------------------------------------------
15dd636f 3550void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
e43c066c 3551{
3552 //
3553 //
3554 // Int_t list[6];
00a7cc50 3555 //AliITSRecPoint * clist[6];
e43c066c 3556 // Int_t shared = GetNumberOfSharedClusters(track,index,list,clist);
3557 Float_t dedx[4];
3558 Int_t accepted=0;
b9671574 3559 track->SetChi2MIP(9,0);
e43c066c 3560 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3561 Int_t cindex = track->GetClusterIndex(i);
3562 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3563 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3564 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3565 Int_t isWrong=1;
3566 for (Int_t ind=0;ind<3;ind++){
3567 if (cl->GetLabel(ind)==lab) isWrong=0;
3568 }
b9671574 3569 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3570 if (l<2) continue;
3571 //if (l>3 && (cl->GetNy()>4) || (cl->GetNz()>4)) continue; //shared track
3572 //if (l>3&& !(cl->GetType()==1||cl->GetType()==10)) continue;
3573 //if (l<4&& !(cl->GetType()==1)) continue;
b9671574 3574 dedx[accepted]= track->GetSampledEdx(i);
e43c066c 3575 //dedx[accepted]= track->fNormQ[l];
3576 accepted++;
3577 }
3578 if (accepted<1) {
3579 track->SetdEdx(0);
3580 return;
3581 }
3582 Int_t indexes[4];
3583 TMath::Sort(accepted,dedx,indexes,kFALSE);
3584 Double_t low=0.;
3585 Double_t up=0.51;
3586 Double_t nl=low*accepted, nu =up*accepted;
3587 Float_t sumamp = 0;
3588 Float_t sumweight =0;
3589 for (Int_t i=0; i<accepted; i++) {
3590 Float_t weight =1;
3591 if (i<nl+0.1) weight = TMath::Max(1.-(nl-i),0.);
3592 if (i>nu-1) weight = TMath::Max(nu-i,0.);
3593 sumamp+= dedx[indexes[i]]*weight;
3594 sumweight+=weight;
3595 }
3596 track->SetdEdx(sumamp/sumweight);
3597}
44347160 3598//------------------------------------------------------------------------
e50912db 3599void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3600 //
3601 //
afd25725 3602 if (fCoefficients) delete []fCoefficients;
3603 fCoefficients = new Float_t[ntracks*48];
3604 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3605}
44347160 3606//------------------------------------------------------------------------
00a7cc50 3607Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3608{
3609 //
3610 //
3611 //
3612 Float_t erry,errz;
3613 Float_t theta = track->GetTgl();
3614 Float_t phi = track->GetSnp();
3615 phi = TMath::Sqrt(phi*phi/(1.-phi*phi));
e50912db 3616 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz);
1c97ce2f 3617 //printf(" chi2: tr-cl %f %f tr X %f cl X %f\n",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX());
3618
3619 // Take into account the mis-alignment (bring track to cluster plane)
3620 Double_t xTrOrig=track->GetX();
3621 if (!track->PropagateTo(xTrOrig+cluster->GetX(),0.,0.)) return 1000.;
3622 //printf(" chi2: tr-cl %f %f tr X %f cl X %f\n",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX());
e43c066c 3623 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz);
1c97ce2f 3624 // Bring the track back to detector plane in ideal geometry
3625 // [mis-alignment will be accounted for in UpdateMI()]
3626 if (!track->PropagateTo(xTrOrig,0.,0.)) return 1000.;
e43c066c 3627 Float_t ny,nz;
e50912db 3628 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3629 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3630 if (delta>1){
3631 chi2+=0.5*TMath::Min(delta/2,2.);
3632 chi2+=2.*cluster->GetDeltaProbability();
3633 }
3634 //
b9671574 3635 track->SetNy(layer,ny);
3636 track->SetNz(layer,nz);
3637 track->SetSigmaY(layer,erry);
3638 track->SetSigmaZ(layer, errz);
e43c066c 3639 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
b9671574 3640 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/(1.- track->GetSnp()*track->GetSnp())));
e43c066c 3641 return chi2;
3642
3643}
e50912db 3644//------------------------------------------------------------------------
3645Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3646{
3647 //
3648 //
3649 //
3650 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3651 track->SetClIndex(layer, index);
572f41f9 3652 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3653 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3654 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3655 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3656 }
e43c066c 3657 }
a504d56f 3658
1f3e997f 3659 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
a504d56f 3660
afd25725 3661
1c97ce2f 3662 // Take into account the mis-alignment (bring track to cluster plane)
3663 Double_t xTrOrig=track->GetX();
3664 //Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);printf("gtr %f %f %f\n",trxyz[0],trxyz[1],trxyz[2]);printf("gcl %f %f %f\n",clxyz[0],clxyz[1],clxyz[2]);
3665 //printf(" xtr %f xcl %f\n",track->GetX(),cl->GetX());
fddf8459 3666
1c97ce2f 3667 if (!track->PropagateTo(xTrOrig+cl->GetX(),0.,0.)) return 0;
fddf8459 3668
1f3e997f 3669
150f264c 3670 AliCluster c(*cl);
3671 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3672 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3673
1c97ce2f 3674
3675 Int_t updated = track->UpdateMI(&c,chi2,index);
3676
3677 // Bring the track back to detector plane in ideal geometry
3678 if (!track->PropagateTo(xTrOrig,0.,0.)) return 0;
3679
3680 //if(!updated) printf("update failed\n");
3681 return updated;
e43c066c 3682}
150f264c 3683
44347160 3684//------------------------------------------------------------------------
e50912db 3685void AliITStrackerMI::GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3686{
3687 //
3688 //DCA sigmas parameterization
3689 //to be paramterized using external parameters in future
3690 //
3691 //
afd25725 3692 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3693 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3694}
e50912db 3695//------------------------------------------------------------------------
e43c066c 3696void AliITStrackerMI::SignDeltas( TObjArray *ClusterArray, Float_t vz)
3697{
3698 //
3699 //
3700 Int_t entries = ClusterArray->GetEntriesFast();
3701 if (entries<4) return;
00a7cc50 3702 AliITSRecPoint* cluster = (AliITSRecPoint*)ClusterArray->At(0);
e43c066c 3703 Int_t layer = cluster->GetLayer();
3704 if (layer>1) return;
3705 Int_t index[10000];
3706 Int_t ncandidates=0;
3707 Float_t r = (layer>0)? 7:4;
3708 //
3709 for (Int_t i=0;i<entries;i++){
00a7cc50 3710 AliITSRecPoint* cl0 = (AliITSRecPoint*)ClusterArray->At(i);
e43c066c 3711 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3712 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3713 index[ncandidates] = i; //candidate to belong to delta electron track
3714 ncandidates++;
3715 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3716 cl0->SetDeltaProbability(1);
3717 }
3718 }
3719 //
3720 //
3721 //
3722 for (Int_t i=0;i<ncandidates;i++){
00a7cc50 3723 AliITSRecPoint* cl0 = (AliITSRecPoint*)ClusterArray->At(index[i]);
e43c066c 3724 if (cl0->GetDeltaProbability()>0.8) continue;
3725 //
3726 Int_t ncl = 0;
3727 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3728 sumy=sumz=sumy2=sumyz=sumw=0.0;
3729 for (Int_t j=0;j<ncandidates;j++){
3730 if (i==j) continue;
00a7cc50 3731 AliITSRecPoint* cl1 = (AliITSRecPoint*)ClusterArray->At(index[j]);
e43c066c 3732 //
3733 Float_t dz = cl0->GetZ()-cl1->GetZ();
3734 Float_t dy = cl0->GetY()-cl1->GetY();
3735 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3736 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3737 y[ncl] = cl1->GetY();
3738 z[ncl] = cl1->GetZ();
3739 sumy+= y[ncl]*weight;
3740 sumz+= z[ncl]*weight;
3741 sumy2+=y[ncl]*y[ncl]*weight;
3742 sumyz+=y[ncl]*z[ncl]*weight;
3743 sumw+=weight;
3744 ncl++;
3745 }
3746 }
3747 if (ncl<4) continue;
3748 Float_t det = sumw*sumy2 - sumy*sumy;
3749 Float_t delta=1000;
3750 if (TMath::Abs(det)>0.01){
3751 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3752 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3753 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3754 }
3755 else{
3756 Float_t z0 = sumyz/sumy;
3757 delta = TMath::Abs(cl0->GetZ()-z0);
3758 }
3759 if ( delta<0.05) {
3760 cl0->SetDeltaProbability(1-20.*delta);
3761 }
3762 }
3763}
44347160 3764//------------------------------------------------------------------------
15dd636f 3765void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3766{
3767 //
3768 //
3769 track->UpdateESDtrack(flags);
b9671574 3770 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3771 if (oldtrack) delete oldtrack;
b9671574 3772 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3773 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
628e7bb0 3774 printf("Problem\n");
3775 }
e43c066c 3776}
44347160 3777//------------------------------------------------------------------------
81e97e0d 3778Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3779 //
ae00569a 3780 // Get nearest upper layer close to the point xr.
81e97e0d 3781 // rough approximation
3782 //
bf6adc12 3783 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3784 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3785 Int_t res =6;
3786 for (Int_t i=0;i<6;i++){
bf6adc12 3787 if (radius<kRadiuses[i]){
81e97e0d 3788 res =i;
3789 break;
3790 }
3791 }
3792 return res;
3793}
44347160 3794//------------------------------------------------------------------------
af885e0f 3795void AliITStrackerMI::UpdateTPCV0(AliESDEvent *event){
81e97e0d 3796 //
3797 //try to update, or reject TPC V0s
3798 //
d6a49f20 3799 Int_t nv0s = event->GetNumberOfV0s();
81e97e0d 3800 Int_t nitstracks = fTrackHypothesys.GetEntriesFast();
51ad6848 3801
81e97e0d 3802 for (Int_t i=0;i<nv0s;i++){
d6a49f20 3803 AliESDv0 * vertex = event->GetV0(i);
81e97e0d 3804 Int_t ip = vertex->GetIndex(0);
3805 Int_t im = vertex->GetIndex(1);
3806 //
3807 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)fTrackHypothesys.At(ip):0;
3808 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)fTrackHypothesys.At(im):0;
3809 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;
3810 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;
3811 //
3812 //
3813 if (trackp){
b9671574 3814 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){
3815 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);
3816 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100);
81e97e0d 3817 }
3818 }
51ad6848 3819
81e97e0d 3820 if (trackm){
b9671574 3821 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){
3822 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);
3823 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100);
81e97e0d 3824 }
3825 }
3826 if (vertex->GetStatus()==-100) continue;
3827 //
b75d63a7 3828 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
3829 Int_t clayer = GetNearestLayer(xrp); //I.B.
81e97e0d 3830 vertex->SetNBefore(clayer); //
3831 vertex->SetChi2Before(9*clayer); //
3832 vertex->SetNAfter(6-clayer); //
3833 vertex->SetChi2After(0); //
3834 //
3835 if (clayer >1 ){ // calculate chi2 before vertex
3836 Float_t chi2p = 0, chi2m=0;
3837 //
3838 if (trackp){
3839 for (Int_t ilayer=0;ilayer<clayer;ilayer++){
b9671574 3840 if (trackp->GetClIndex(ilayer)>0){
3841 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+
3842 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));
81e97e0d 3843 }
3844 else{
3845 chi2p+=9;
3846 }
3847 }
3848 }else{
3849 chi2p = 9*clayer;
3850 }
3851 //
3852 if (trackm){
3853 for (Int_t ilayer=0;ilayer<clayer;ilayer++){
b9671574 3854 if (trackm->GetClIndex(ilayer)>0){
3855 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+
3856 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));
81e97e0d 3857 }
3858 else{
3859 chi2m+=9;
3860 }
3861 }
3862 }else{
3863 chi2m = 9*clayer;
3864 }
3865 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));
3866 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex
3867 }
3868
3869 if (clayer < 5 ){ // calculate chi2 after vertex
3870 Float_t chi2p = 0, chi2m=0;
3871 //
6c94f330 3872 if (trackp&&TMath::Abs(trackp->GetTgl())<1.){
81e97e0d 3873 for (Int_t ilayer=clayer;ilayer<6;ilayer++){
b9671574 3874 if (trackp->GetClIndex(ilayer)>0){
3875 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+
3876 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));
81e97e0d 3877 }
3878 else{
3879 chi2p+=9;
3880 }
3881 }
3882 }else{
3883 chi2p = 0;
3884 }
3885 //
6c94f330 3886 if (trackm&&TMath::Abs(trackm->GetTgl())<1.){
81e97e0d 3887 for (Int_t ilayer=clayer;ilayer<6;ilayer++){
b9671574 3888 if (trackm->GetClIndex(ilayer)>0){
3889 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+
3890 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));
81e97e0d 3891 }
3892 else{
3893 chi2m+=9;
3894 }
3895 }
3896 }else{
3897 chi2m = 0;
3898 }
3899 vertex->SetChi2After(TMath::Max(chi2p,chi2m));
3900 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS
3901 }
3902 }
3903 //
3904}
44347160 3905//------------------------------------------------------------------------
e50912db 3906void AliITStrackerMI::FindV02(AliESDEvent *event)
e43c066c 3907{
3908 //
81e97e0d 3909 // V0 finder
3910 //
3911 // Cuts on DCA - R dependent
3912 // max distance DCA between 2 tracks cut
3913 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);
3914 //
3915 const Float_t kMaxDist0 = 0.1;
3916 const Float_t kMaxDist1 = 0.1;
3917 const Float_t kMaxDist = 1;
3918 const Float_t kMinPointAngle = 0.85;
3919 const Float_t kMinPointAngle2 = 0.99;
3920 const Float_t kMinR = 0.5;
3921 const Float_t kMaxR = 220;
3922 //const Float_t kCausality0Cut = 0.19;
3923 //const Float_t kLikelihood01Cut = 0.25;
3924 //const Float_t kPointAngleCut = 0.9996;
3925 const Float_t kCausality0Cut = 0.19;
3926 const Float_t kLikelihood01Cut = 0.45;
3927 const Float_t kLikelihood1Cut = 0.5;
3928 const Float_t kCombinedCut = 0.55;
3929
3930 //
3931 //
3932 TTreeSRedirector &cstream = *fDebugStreamer;
3933 Int_t ntracks = event->GetNumberOfTracks();
3934 Int_t nitstracks = fTrackHypothesys.GetEntriesFast();
3935 fOriginal.Expand(ntracks);
3936 fTrackHypothesys.Expand(ntracks);
3937 fBestHypothesys.Expand(ntracks);
3938 //
3939 AliHelix * helixes = new AliHelix[ntracks+2];
3940 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain
3941 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain
3942 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain
3943 Bool_t * forbidden = new Bool_t [ntracks+2];
3944 Int_t *itsmap = new Int_t [ntracks+2];
3945 Float_t *dist = new Float_t[ntracks+2];
3946 Float_t *normdist0 = new Float_t[ntracks+2];
3947 Float_t *normdist1 = new Float_t[ntracks+2];
3948 Float_t *normdist = new Float_t[ntracks+2];
3949 Float_t *norm = new Float_t[ntracks+2];
3950 Float_t *maxr = new Float_t[ntracks+2];
3951 Float_t *minr = new Float_t[ntracks+2];
3952 Float_t *minPointAngle= new Float_t[ntracks+2];
3953 //
6c94f330 3954 AliV0 *pvertex = new AliV0;
81e97e0d 3955 AliITStrackMI * dummy= new AliITStrackMI;
3956 dummy->SetLabel(0);
3957 AliITStrackMI trackat0; //temporary track for DCA calculation
e43c066c 3958 //
81e97e0d 3959 Float_t primvertex[3]={GetX(),GetY(),GetZ()};
628e7bb0 3960 //
afd25725 3961 // make ITS - ESD map
e43c066c 3962 //
81e97e0d 3963 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {
3964 itsmap[itrack] = -1;
3965 forbidden[itrack] = kFALSE;
3966 maxr[itrack] = kMaxR;
3967 minr[itrack] = kMinR;
3968 minPointAngle[itrack] = kMinPointAngle;
3969 }
3970 for (Int_t itrack=0;itrack<nitstracks;itrack++){
3971 AliITStrackMI * original = (AliITStrackMI*)(fOriginal.At(itrack));
b9671574 3972 Int_t esdindex = original->GetESDtrack()->GetID();
81e97e0d 3973 itsmap[esdindex] = itrack;
3974 }
3975 //
afd25725 3976 // create ITS tracks from ESD tracks if not done before
81e97e0d 3977 //
3978 for (Int_t itrack=0;itrack<ntracks;itrack++){
3979 if (itsmap[itrack]>=0) continue;
3980 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));
791f9a2a 3981 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());
3982 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ();
b9671574 3983 tpctrack->GetDZ(GetX(),GetY(),GetZ(),tpctrack->GetDP()); //I.B.
3984 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){
81e97e0d 3985 // tracks which can reach inner part of ITS
3986 // propagate track to outer its volume - with correction for material
afd25725 3987 CorrectForTPCtoITSDeadZoneMaterial(tpctrack);
81e97e0d 3988 }
3989 itsmap[itrack] = nitstracks;
3990 fOriginal.AddAt(tpctrack,nitstracks);
3991 nitstracks++;
3992 }
3993 //
3994 // fill temporary arrays
3995 //
3996 for (Int_t itrack=0;itrack<ntracks;itrack++){
3997 AliESDtrack * esdtrack = event->GetTrack(itrack);
3998 Int_t itsindex = itsmap[itrack];
3999 AliITStrackMI *original = (AliITStrackMI*)fOriginal.At(itsmap[itrack]);
4000 if (!original) continue;
4001 AliITStrackMI *bestConst = 0;
4002 AliITStrackMI *bestLong = 0;
4003 AliITStrackMI *best = 0;
4004 //
628e7bb0 4005 //
81e97e0d 4006 TObjArray * array = (TObjArray*) fTrackHypothesys.At(itsindex);
4007 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();
4008 // Get best track with vertex constrain
628e7bb0 4009 for (Int_t ih=0;ih<hentries;ih++){
4010 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
b9671574 4011 if (!trackh->GetConstrain()) continue;
81e97e0d 4012 if (!bestConst) bestConst = trackh;
b9671574 4013 if (trackh->GetNumberOfClusters()>5.0){
81e97e0d 4014 bestConst = trackh; // full track - with minimal chi2
4015 break;
4016 }
b9671574 4017 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue;
81e97e0d 4018 bestConst = trackh;
628e7bb0 4019 break;
81e97e0d 4020 }
4021 // Get best long track without vertex constrain and best track without vertex constrain
628e7bb0 4022 for (Int_t ih=0;ih<hentries;ih++){
4023 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
b9671574 4024 if (trackh->GetConstrain()) continue;
81e97e0d 4025 if (!best) best = trackh;
4026 if (!bestLong) bestLong = trackh;
b9671574 4027 if (trackh->GetNumberOfClusters()>5.0){
81e97e0d 4028 bestLong = trackh; // full track - with minimal chi2
4029 break;
4030 }
b9671574 4031 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue;
81e97e0d 4032 bestLong = trackh;
628e7bb0 4033 }
81e97e0d 4034 if (!best) {
4035 best = original;
4036 bestLong = original;
628e7bb0 4037 }
6c94f330 4038 //I.B. trackat0 = *bestLong;
420c3064 4039 new (&trackat0) AliITStrackMI(*bestLong);
81e97e0d 4040 Double_t xx,yy,zz,alpha;
d1181f10 4041 if (!bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz)) continue;
81e97e0d 4042 alpha = TMath::ATan2(yy,xx);
d1181f10 4043 if (!trackat0.Propagate(alpha,0)) continue;
81e97e0d 4044 // calculate normalized distances to the vertex
628e7bb0 4045 //
6c94f330 4046 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));
b9671574 4047 if ( bestLong->GetNumberOfClusters()>3 ){
6c94f330 4048 dist[itsindex] = trackat0.GetY();
4049 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());
4050 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);
4051 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));
81e97e0d 4052 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
29641977 4053 if (!bestConst){
b9671574 4054 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;
4055 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;
4056 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;
29641977 4057 }else{
b9671574 4058 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;
4059 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;
29641977 4060 }
81e97e0d 4061 }
4062 else{
b9671574 4063 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){
4064 dist[itsindex] = bestConst->GetD(0);
4065 norm[itsindex] = bestConst->GetDnorm(0);
4066 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);
4067 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);
81e97e0d 4068 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
4069 }else{
6c94f330 4070 dist[itsindex] = trackat0.GetY();
4071 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());
4072 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);
4073 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));
81e97e0d 4074 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
6c94f330 4075 if (TMath::Abs(trackat0.GetTgl())>1.05){
67c1e979 4076 if (normdist[itsindex]<3) forbidden[itsindex]=kTRUE;
4077 if (normdist[itsindex]>3) {
4078 minr[itsindex] = TMath::Max(Float_t(40.),minr[itsindex]);
4079 }
81e97e0d 4080 }
4081 }
4082 }
628e7bb0 4083 //
81e97e0d 4084 //-----------------------------------------------------------
4085 //Forbid primary track candidates -
628e7bb0 4086 //
81e97e0d 4087 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");
4088 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");
4089 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");
4090 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");
4091 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");
4092 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");
4093 //-----------------------------------------------------------
4094 if (bestConst){
b9671574 4095 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5) forbidden[itsindex]=kTRUE;
4096 if (normdist[itsindex]<3 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5) forbidden[itsindex]=kTRUE;
4097 if (normdist[itsindex]<2 && bestConst->GetClIndex(0)>0 && bestConst->GetClIndex(1)>0 ) forbidden[itsindex]=kTRUE;
4098 if (normdist[itsindex]<1 && bestConst->GetClIndex(0)>0) forbidden[itsindex]=kTRUE;
4099 if (normdist[itsindex]<4 && bestConst->GetNormChi2(0)<2) forbidden[itsindex]=kTRUE;
4100 if (normdist[itsindex]<5 && bestConst->GetNormChi2(0)<1) forbidden[itsindex]=kTRUE;
4101 if (bestConst->GetNormChi2(0)<2.5) {
81e97e0d 4102 minPointAngle[itsindex]= 0.9999;
4103 maxr[itsindex] = 10;
628e7bb0 4104 }
e43c066c 4105 }
81e97e0d 4106 //
4107 //forbid daughter kink candidates
4108 //
4109 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;
4110 Bool_t isElectron = kTRUE;
29641977 4111 Bool_t isProton = kTRUE;
81e97e0d 4112 Double_t pid[5];
4113 esdtrack->GetESDpid(pid);
4114 for (Int_t i=1;i<5;i++){
4115 if (pid[0]<pid[i]) isElectron= kFALSE;
29641977 4116 if (pid[4]<pid[i]) isProton= kFALSE;
81e97e0d 4117 }
4118 if (isElectron){
4119 forbidden[itsindex]=kFALSE;
29641977 4120 normdist[itsindex]*=-1;
4121 }
4122 if (isProton){
4123 if (normdist[itsindex]>2) forbidden[itsindex]=kFALSE;
4124 normdist[itsindex]*=-1;
81e97e0d 4125 }
29641977 4126
81e97e0d 4127 //
4128 // Causality cuts in TPC volume
4129 //
4130 if (esdtrack->GetTPCdensity(0,10) >0.6) maxr[itsindex] = TMath::Min(Float_t(110),maxr[itsindex]);
4131 if (esdtrack->GetTPCdensity(10,30)>0.6) maxr[itsindex] = TMath::Min(Float_t(120),maxr[itsindex]);
4132 if (esdtrack->GetTPCdensity(20,40)>0.6) maxr[itsindex] = TMath::Min(Float_t(130),maxr[itsindex]);
4133 if (esdtrack->GetTPCdensity(30,50)>0.6) maxr[itsindex] = TMath::Min(Float_t(140),maxr[itsindex]);
4134 //
b9671574 4135 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=100;
81e97e0d 4136 //
4137 //
29641977 4138 if (kFALSE){
81e97e0d 4139 cstream<<"Track"<<
4140 "Tr0.="<<best<<
4141 "Tr1.="<<((bestConst)? bestConst:dummy)<<
4142 "Tr2.="<<bestLong<<
4143 "Tr3.="<<&trackat0<<
4144 "Esd.="<<esdtrack<<
4145 "Dist="<<dist[itsindex]<<
4146 "ND0="<<normdist0[itsindex]<<
4147 "ND1="<<normdist1[itsindex]<<
4148 "ND="<<normdist[itsindex]<<
4149 "Pz="<<primvertex[2]<<
4150 "Forbid="<<forbidden[itsindex]<<
4151 "\n";
4152 //
4153 }
4154 trackarray.AddAt(best,itsindex);
4155 trackarrayc.AddAt(bestConst,itsindex);
4156 trackarrayl.AddAt(bestLong,itsindex);
4157 new (&helixes[itsindex]) AliHelix(*best);
e43c066c 4158 }
628e7bb0 4159 //
4160 //
81e97e0d 4161 //
4162 // first iterration of V0 finder
4163 //
4164 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){
4165 Int_t itrack0 = itsmap[iesd0];
4166 if (forbidden[itrack0]) continue;
4167 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);
4168 if (!btrack0) continue;
420c3064 4169 if (btrack0->GetSign()>0) continue;
628e7bb0 4170 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);
4171 //
81e97e0d 4172 for (Int_t iesd1=0;iesd1<ntracks;iesd1++){
4173 Int_t itrack1 = itsmap[iesd1];
4174 if (forbidden[itrack1]) continue;
4175
4176 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1);
4177 if (!btrack1) continue;
420c3064 4178 if (btrack1->GetSign()<0) continue;
81e97e0d 4179 Bool_t isGold = kFALSE;
4180 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){
4181 isGold = kTRUE;
628e7bb0 4182 }
81e97e0d 4183 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);
4184 AliHelix &h1 = helixes[itrack0];
4185 AliHelix &h2 = helixes[itrack1];
628e7bb0 4186 //
81e97e0d 4187 // find linear distance
4188 Double_t rmin =0;
628e7bb0 4189 //
51ad6848 4190 //
51ad6848 4191 //
81e97e0d 4192 Double_t phase[2][2],radius[2];
4193 Int_t points = h1.GetRPHIintersections(h2, phase, radius);
4194 if (points==0) continue;
c49fe0bf 4195 Double_t delta[2]={1000000,1000000};
81e97e0d 4196 rmin = radius[0];
4197 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);
4198 if (points==2){
4199 if (radius[1]<rmin) rmin = radius[1];
4200 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);
4201 }
4202 rmin = TMath::Sqrt(rmin);
4203 Double_t distance = 0;
4204 Double_t radiusC = 0;
4205 Int_t iphase = 0;
c49fe0bf 4206 if (points==1 || delta[0]<delta[1]){
81e97e0d 4207 distance = TMath::Sqrt(delta[0]);
4208 radiusC = TMath::Sqrt(radius[0]);
4209 }else{
4210 distance = TMath::Sqrt(delta[1]);
4211 radiusC = TMath::Sqrt(radius[1]);
4212 iphase=1;
4213 }
4214 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])) continue;
4215 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])) continue;
4216 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1));
4217 if (distance>maxDist) continue;
4218 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);
4219 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) continue;
628e7bb0 4220 //
51ad6848 4221 //
81e97e0d 4222 // Double_t distance = TestV0(h1,h2,pvertex,rmin);
51ad6848 4223 //
81e97e0d 4224 // if (distance>maxDist) continue;
4225 // if (pvertex->GetRr()<kMinR) continue;
4226 // if (pvertex->GetRr()>kMaxR) continue;
4227 AliITStrackMI * track0=btrack0;
4228 AliITStrackMI * track1=btrack1;
4229 // if (pvertex->GetRr()<3.5){
4230 if (radiusC<3.5){
4231 //use longest tracks inside the pipe
4232 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);
4233 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);
4234 }
51ad6848 4235 //
4236 //
b75d63a7 4237 pvertex->SetParamN(*track0);
4238 pvertex->SetParamP(*track1);
81e97e0d 4239 pvertex->Update(primvertex);
b9671574 4240 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters
67c1e979 4241
81e97e0d 4242 if (pvertex->GetRr()<kMinR) continue;
4243 if (pvertex->GetRr()>kMaxR) continue;
b75d63a7 4244 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle) continue;
4245//Bo: if (pvertex->GetDist2()>maxDist) continue;
4246 if (pvertex->GetDcaV0Daughters()>maxDist) continue;
4247//Bo: pvertex->SetLab(0,track0->GetLabel());
4248//Bo: pvertex->SetLab(1,track1->GetLabel());
b9671574 4249 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
4250 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
81e97e0d 4251 //
4252 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy;
4253 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;
51ad6848 4254
81e97e0d 4255 //
4256 //
4257 TObjArray * array0b = (TObjArray*)fBestHypothesys.At(itrack0);
513ab112 4258 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<1.1) {
4259 fCurrentEsdTrack = itrack0;
81e97e0d 4260 FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack0),itrack0, kFALSE);
513ab112 4261 }
81e97e0d 4262 TObjArray * array1b = (TObjArray*)fBestHypothesys.At(itrack1);
513ab112 4263 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<1.1) {
4264 fCurrentEsdTrack = itrack1;
81e97e0d 4265 FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack1),itrack1, kFALSE);
513ab112 4266 }
81e97e0d 4267 //
4268 AliITStrackMI * track0b = (AliITStrackMI*)fOriginal.At(itrack0);
4269 AliITStrackMI * track1b = (AliITStrackMI*)fOriginal.At(itrack1);
4270 AliITStrackMI * track0l = (AliITStrackMI*)fOriginal.At(itrack0);
4271 AliITStrackMI * track1l = (AliITStrackMI*)fOriginal.At(itrack1);
4272
4273 Float_t minchi2before0=16;
4274 Float_t minchi2before1=16;
4275 Float_t minchi2after0 =16;
4276 Float_t minchi2after1 =16;
b75d63a7 4277 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
4278 Int_t maxLayer = GetNearestLayer(xrp); //I.B.
81e97e0d 4279
4280 if (array0b) for (Int_t i=0;i<5;i++){
4281 // best track after vertex
4282 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);
4283 if (!btrack) continue;
b9671574 4284 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack;
29641977 4285 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {
6c94f330 4286 if (btrack->GetX()<pvertex->GetRr()-2.) {
b9671574 4287 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){
81e97e0d 4288 Float_t sumchi2= 0;
4289 Float_t sumn = 0;
29641977 4290 if (maxLayer<3){ // take prim vertex as additional measurement
4291 if (normdist[itrack0]>0 && htrackc0){
97f754fa 4292 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);
29641977 4293 }else{
97f754fa 4294 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);
29641977 4295 }
4296 sumn += 3-maxLayer;
4297 }
81e97e0d 4298 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
97f754fa 4299 sumn+=1.;
b9671574 4300 if (!btrack->GetClIndex(ilayer)){
81e97e0d 4301 sumchi2+=25;
4302 continue;
4303 }else{
b9671574 4304 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);
97f754fa 4305 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 4306 if (fgLayers[ilayer].GetClusterTracks(itrack,c)>=0 && fgLayers[ilayer].GetClusterTracks(itrack,c)!=itrack0){
97f754fa 4307 sumchi2+=18.; //shared cluster
4308 break;
4309 }
4310 }
b9671574 4311 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));
4312 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer));
81e97e0d 4313 }
4314 }
4315 sumchi2/=sumn;
4316 if (sumchi2<minchi2before0) minchi2before0=sumchi2;
51ad6848 4317 }
81e97e0d 4318 continue; //safety space - Geo manager will give exact layer
51ad6848 4319 }
81e97e0d 4320 track0b = btrack;
b9671574 4321 minchi2after0 = btrack->GetNormChi2(i);
81e97e0d 4322 break;
4323 }
4324 if (array1b) for (Int_t i=0;i<5;i++){
4325 // best track after vertex
4326 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);
4327 if (!btrack) continue;
b9671574 4328 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack;
29641977 4329 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){
6c94f330 4330 if (btrack->GetX()<pvertex->GetRr()-2){
b9671574 4331 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){
81e97e0d 4332 Float_t sumchi2= 0;
4333 Float_t sumn = 0;
29641977 4334 if (maxLayer<3){ // take prim vertex as additional measurement
4335 if (normdist[itrack1]>0 && htrackc1){
97f754fa 4336 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);
29641977 4337 }else{
97f754fa 4338 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);
29641977 4339 }
4340 sumn += 3-maxLayer;
4341 }
81e97e0d 4342 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
4343 sumn+=1.;
b9671574 4344 if (!btrack->GetClIndex(ilayer)){
81e97e0d 4345 sumchi2+=30;
4346 continue;
4347 }else{
b9671574 4348 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);
97f754fa 4349 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 4350 if (fgLayers[ilayer].GetClusterTracks(itrack,c)>=0 && fgLayers[ilayer].GetClusterTracks(itrack,c)!=itrack1){
97f754fa 4351 sumchi2+=18.; //shared cluster
4352 break;
4353 }
4354 }
b9671574 4355 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));
4356 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer));
81e97e0d 4357 }
4358 }
4359 sumchi2/=sumn;
4360 if (sumchi2<minchi2before1) minchi2before1=sumchi2;
51ad6848 4361 }
81e97e0d 4362 continue; //safety space - Geo manager will give exact layer
51ad6848 4363 }
81e97e0d 4364 track1b = btrack;
b9671574 4365 minchi2after1 = btrack->GetNormChi2(i);
81e97e0d 4366 break;
e43c066c 4367 }
628e7bb0 4368 //
81e97e0d 4369 // position resolution - used for DCA cut
6c94f330 4370 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+
4371 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+
4372 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());
81e97e0d 4373 sigmad =TMath::Sqrt(sigmad)+0.04;
4374 if (pvertex->GetRr()>50){
4375 Double_t cov0[15],cov1[15];
b9671574 4376 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);
4377 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);
81e97e0d 4378 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+
4379 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+
4380 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);
4381 sigmad =TMath::Sqrt(sigmad)+0.05;
4382 }
4383 //
6c94f330 4384 AliV0 vertex2;
b75d63a7 4385 vertex2.SetParamN(*track0b);
4386 vertex2.SetParamP(*track1b);
81e97e0d 4387 vertex2.Update(primvertex);
b75d63a7 4388 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){
4389 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){
4390 pvertex->SetParamN(*track0b);
4391 pvertex->SetParamP(*track1b);
81e97e0d 4392 pvertex->Update(primvertex);
b9671574 4393 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters
4394 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
4395 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
81e97e0d 4396 }
4397 pvertex->SetDistSigma(sigmad);
b75d63a7 4398 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad);
29641977 4399 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);
628e7bb0 4400 //
81e97e0d 4401 // define likelihhod and causalities
628e7bb0 4402 //
81e97e0d 4403 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26;
29641977 4404 if (maxLayer<1){
4405 Float_t fnorm0 = normdist[itrack0];
4406 if (fnorm0<0) fnorm0*=-3;
4407 Float_t fnorm1 = normdist[itrack1];
4408 if (fnorm1<0) fnorm1*=-3;
5af4a2d0 4409 if ((pvertex->GetAnglep()[2]>0.1) || ( (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 ) || (pvertex->GetRr()<3)){
29641977 4410 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);
4411 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);
67c1e979 4412 }
81e97e0d 4413 pvertex->SetChi2Before(normdist[itrack0]);
4414 pvertex->SetChi2After(normdist[itrack1]);
4415 pvertex->SetNAfter(0);
4416 pvertex->SetNBefore(0);
4417 }else{
4418 pvertex->SetChi2Before(minchi2before0);
4419 pvertex->SetChi2After(minchi2before1);
29641977 4420 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){
4421 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);
4422 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);
4423 }
4424 pvertex->SetNAfter(maxLayer);
4425 pvertex->SetNBefore(maxLayer);
628e7bb0 4426 }
81e97e0d 4427 if (pvertex->GetRr()<90){
f941f7fa 4428 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
4429 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
628e7bb0 4430 }
81e97e0d 4431 if (pvertex->GetRr()<20){
4432 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;
4433 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;
e43c066c 4434 }
628e7bb0 4435 //
81e97e0d 4436 pvertex->SetCausality(pb0,pb1,pa0,pa1);
628e7bb0 4437 //
81e97e0d 4438 // Likelihood calculations - apply cuts
4439 //
4440 Bool_t v0OK = kTRUE;
4441 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];
b75d63a7 4442 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];
81e97e0d 4443 p12 = TMath::Sqrt(p12); // "mean" momenta
4444 Float_t sigmap0 = 0.0001+0.001/(0.1+pvertex->GetRr());
4445 Float_t sigmap = 0.5*sigmap0*(0.6+0.4*p12); // "resolution: of point angle - as a function of radius and momenta
4446
bf6adc12 4447 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);
f941f7fa 4448 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*
4449 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));
628e7bb0 4450 //
b75d63a7 4451 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);
4452 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();
4453 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<0.5)*(lDistNorm<5);
4454
4455 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+
4456 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+
4457 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+
4458 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);
628e7bb0 4459 //
bf6adc12 4460 if (causalityA<kCausality0Cut) v0OK = kFALSE;
4461 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut) v0OK = kFALSE;
4462 if (likelihood1<kLikelihood1Cut) v0OK = kFALSE;
4463 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut) v0OK = kFALSE;
81e97e0d 4464
628e7bb0 4465 //
628e7bb0 4466 //
67c1e979 4467 if (kFALSE){
81e97e0d 4468 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;
4469 cstream<<"It0"<<
4470 "Tr0.="<<track0<< //best without constrain
4471 "Tr1.="<<track1<< //best without constrain
4472 "Tr0B.="<<track0b<< //best without constrain after vertex
4473 "Tr1B.="<<track1b<< //best without constrain after vertex
4474 "Tr0C.="<<htrackc0<< //best with constrain if exist
4475 "Tr1C.="<<htrackc1<< //best with constrain if exist
4476 "Tr0L.="<<track0l<< //longest best
4477 "Tr1L.="<<track1l<< //longest best
b9671574 4478 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params
4479 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params
81e97e0d 4480 "V0.="<<pvertex<< //vertex properties
4481 "V0b.="<<&vertex2<< //vertex properties at "best" track
4482 "ND0="<<normdist[itrack0]<< //normalize distance for track0
4483 "ND1="<<normdist[itrack1]<< //normalize distance for track1
4484 "Gold="<<gold<< //
4485 // "RejectBase="<<rejectBase<< //rejection in First itteration
4486 "OK="<<v0OK<<
4487 "rmin="<<rmin<<
4488 "sigmad="<<sigmad<<
4489 "\n";
4490 }
4491 //if (rejectBase) continue;
628e7bb0 4492 //
81e97e0d 4493 pvertex->SetStatus(0);
4494 // if (rejectBase) {
4495 // pvertex->SetStatus(-100);
4496 //}
b75d63a7 4497 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {
4498 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());
4499 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg
4500 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos
67c1e979 4501 if (v0OK){
4502 // AliV0vertex vertexjuri(*track0,*track1);
4503 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());
4504 // event->AddV0(&vertexjuri);
81e97e0d 4505 pvertex->SetStatus(100);
4506 }
d6a49f20 4507 pvertex->SetOnFlyStatus(kTRUE);
b75d63a7 4508 pvertex->ChangeMassHypothesis(kK0Short);
d6a49f20 4509 event->AddV0(pvertex);
628e7bb0 4510 }
51ad6848 4511 }
4512 }
628e7bb0 4513 //
4514 //
81e97e0d 4515 // delete temporary arrays
4516 //
316c6cd9 4517 delete[] forbidden;
81e97e0d 4518 delete[] minPointAngle;
4519 delete[] maxr;
4520 delete[] minr;
4521 delete[] norm;
4522 delete[] normdist;
4523 delete[] normdist1;
4524 delete[] normdist0;
4525 delete[] dist;
4526 delete[] itsmap;
4527 delete[] helixes;
4528 delete pvertex;
e43c066c 4529}
44347160 4530//------------------------------------------------------------------------
af885e0f 4531void AliITStrackerMI::RefitV02(AliESDEvent *event)
67c1e979 4532{
4533 //
4534 //try to refit V0s in the third path of the reconstruction
4535 //
4536 TTreeSRedirector &cstream = *fDebugStreamer;
4537 //
d6a49f20 4538 Int_t nv0s = event->GetNumberOfV0s();
67c1e979 4539 Float_t primvertex[3]={GetX(),GetY(),GetZ()};
6c94f330 4540 AliV0 v0temp;
67c1e979 4541 for (Int_t iv0 = 0; iv0<nv0s;iv0++){
d6a49f20 4542 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);
67c1e979 4543 if (!v0mi) continue;
4544 Int_t itrack0 = v0mi->GetIndex(0);
4545 Int_t itrack1 = v0mi->GetIndex(1);
4546 AliESDtrack *esd0 = event->GetTrack(itrack0);
4547 AliESDtrack *esd1 = event->GetTrack(itrack1);
4548 if (!esd0||!esd1) continue;
4549 AliITStrackMI tpc0(*esd0);
4550 AliITStrackMI tpc1(*esd1);
b75d63a7 4551 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B.
4552 Double_t alpha =TMath::ATan2(y,x); //I.B.
67c1e979 4553 if (v0mi->GetRr()>85){
4554 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
b75d63a7 4555 v0temp.SetParamN(tpc0);
4556 v0temp.SetParamP(tpc1);
67c1e979 4557 v0temp.Update(primvertex);
29641977 4558 if (kFALSE) cstream<<"Refit"<<
67c1e979 4559 "V0.="<<v0mi<<
4560 "V0refit.="<<&v0temp<<
4561 "Tr0.="<<&tpc0<<
4562 "Tr1.="<<&tpc1<<
4563 "\n";
b75d63a7 4564 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4565 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4566 v0mi->SetParamN(tpc0);
4567 v0mi->SetParamP(tpc1);
67c1e979 4568 v0mi->Update(primvertex);
4569 }
4570 }
4571 continue;
4572 }
4573 if (v0mi->GetRr()>35){
afd25725 4574 CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
4575 CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
67c1e979 4576 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
b75d63a7 4577 v0temp.SetParamN(tpc0);
4578 v0temp.SetParamP(tpc1);
67c1e979 4579 v0temp.Update(primvertex);
29641977 4580 if (kFALSE) cstream<<"Refit"<<
67c1e979 4581 "V0.="<<v0mi<<
4582 "V0refit.="<<&v0temp<<
4583 "Tr0.="<<&tpc0<<
4584 "Tr1.="<<&tpc1<<
4585 "\n";
b75d63a7 4586 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4587 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4588 v0mi->SetParamN(tpc0);
4589 v0mi->SetParamP(tpc1);
67c1e979 4590 v0mi->Update(primvertex);
4591 }
4592 }
4593 continue;
4594 }
afd25725 4595 CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
4596 CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
67c1e979 4597 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
4598 if (RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){
b75d63a7 4599 v0temp.SetParamN(tpc0);
4600 v0temp.SetParamP(tpc1);
67c1e979 4601 v0temp.Update(primvertex);
29641977 4602 if (kFALSE) cstream<<"Refit"<<
67c1e979 4603 "V0.="<<v0mi<<
4604 "V0refit.="<<&v0temp<<
4605 "Tr0.="<<&tpc0<<
4606 "Tr1.="<<&tpc1<<
4607 "\n";
b75d63a7 4608 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4609 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4610 v0mi->SetParamN(tpc0);
4611 v0mi->SetParamP(tpc1);
67c1e979 4612 v0mi->Update(primvertex);
4613 }
4614 }
4615 }
4616}
44347160 4617//------------------------------------------------------------------------
e50912db 4618void AliITStrackerMI::BuildMaterialLUT(TString material) {
4619 //--------------------------------------------------------------------
4620 // Fill a look-up table with mean material
4621 //--------------------------------------------------------------------
4622
4623 Int_t n=1000;
4624 Double_t mparam[7];
4625 Double_t point1[3],point2[3];
4626 Double_t phi,cosphi,sinphi,z;
4627 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 4628 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
4629 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 4630
4631 Int_t ifirst=0,ilast=0;
4632 if(material.Contains("Pipe")) {
4633 ifirst=6; ilast=6;
4634 } else if(material.Contains("Shields")) {
4635 ifirst=7; ilast=8;
4636 } else if(material.Contains("Layers")) {
4637 ifirst=0; ilast=5;
4638 } else {
4639 Error("BuildMaterialLUT","Wrong layer name\n");
4640 }
4641
4642 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4643 Double_t param[5]={0.,0.,0.,0.,0.};
4644 for (Int_t i=0; i<n; i++) {
4645 phi = 2.*TMath::Pi()*gRandom->Rndm();
4646 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4647 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4648 point1[0] = rmin[imat]*cosphi;
4649 point1[1] = rmin[imat]*sinphi;
4650 point1[2] = z;
4651 point2[0] = rmax[imat]*cosphi;
4652 point2[1] = rmax[imat]*sinphi;
4653 point2[2] = z;
4654 AliTracker::MeanMaterialBudget(point1,point2,mparam);
4655 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4656 }
4657 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4658 if(imat<=5) {
4659 fxOverX0Layer[imat] = param[1];
4660 fxTimesRhoLayer[imat] = param[0]*param[4];
4661 } else if(imat==6) {
4662 fxOverX0Pipe = param[1];
4663 fxTimesRhoPipe = param[0]*param[4];
4664 } else if(imat==7) {
4665 fxOverX0Shield[0] = param[1];
4666 fxTimesRhoShield[0] = param[0]*param[4];
4667 } else if(imat==8) {
4668 fxOverX0Shield[1] = param[1];
4669 fxTimesRhoShield[1] = param[0]*param[4];
4670 }
4671 }
4672 /*
4673 printf("%s\n",material.Data());
4674 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4675 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4676 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4677 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4678 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4679 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4680 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4681 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4682 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4683 */
4684 return;
4685}
4686//------------------------------------------------------------------------
4687Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4688 TString direction) {
4689 //-------------------------------------------------------------------
4690 // Propagate beyond beam pipe and correct for material
4691 // (material budget in different ways according to fUseTGeo value)
4692 //-------------------------------------------------------------------
4693
4694 // Define budget mode:
4695 // 0: material from AliITSRecoParam (hard coded)
4696 // 1: material from TGeo (on the fly)
4697 // 2: material from lut
4698 // 3: material from TGeo (same for all hypotheses)
4699 Int_t mode;
4700 switch(fUseTGeo) {
4701 case 0:
4702 mode=0;
4703 break;
4704 case 1:
4705 mode=1;
4706 break;
4707 case 2:
4708 mode=2;
4709 break;
4710 case 3:
4711 if(fTrackingPhase.Contains("Clusters2Tracks"))
4712 { mode=3; } else { mode=1; }
4713 break;
4714 case 4:
4715 if(fTrackingPhase.Contains("Clusters2Tracks"))
4716 { mode=3; } else { mode=2; }
4717 break;
4718 default:
4719 mode=0;
4720 break;
4721 }
4722 if(fTrackingPhase.Contains("Default")) mode=0;
4723
4724 Int_t index=fCurrentEsdTrack;
4725
4726 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4727 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4728 Double_t xToGo;
4729 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4730
4731 Double_t xOverX0,x0,lengthTimesMeanDensity;
4732 Bool_t anglecorr=kTRUE;
4733
4734 switch(mode) {
4735 case 0:
4736 xOverX0 = AliITSRecoParam::GetdPipe();
4737 x0 = AliITSRecoParam::GetX0Be();
4738 lengthTimesMeanDensity = xOverX0*x0;
4739 break;
4740 case 1:
4741 if (!t->PropagateToTGeo(xToGo,1)) return 0;
4742 return 1;
4743 break;
4744 case 2:
4745 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4746 xOverX0 = fxOverX0Pipe;
4747 lengthTimesMeanDensity = fxTimesRhoPipe;
4748 break;
4749 case 3:
4750 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4751 if(fxOverX0PipeTrks[index]<0) {
4752 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4753 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4754 (1.-t->GetSnp()*t->GetSnp()));
4755 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4756 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4757 return 1;
4758 }
4759 xOverX0 = fxOverX0PipeTrks[index];
4760 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
4761 break;
4762 }
4763
4764 lengthTimesMeanDensity *= dir;
4765
4766 if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
4767 if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
4768
4769 return 1;
4770}
4771//------------------------------------------------------------------------
4772Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4773 TString shield,
4774 TString direction) {
4775 //-------------------------------------------------------------------
4776 // Propagate beyond SPD or SDD shield and correct for material
4777 // (material budget in different ways according to fUseTGeo value)
4778 //-------------------------------------------------------------------
4779
4780 // Define budget mode:
4781 // 0: material from AliITSRecoParam (hard coded)
4782 // 1: material from TGeo (on the fly)
4783 // 2: material from lut
4784 // 3: material from TGeo (same for all hypotheses)
4785 Int_t mode;
4786 switch(fUseTGeo) {
4787 case 0:
4788 mode=0;
4789 break;
4790 case 1:
4791 mode=1;
4792 break;
4793 case 2:
4794 mode=2;
4795 break;
4796 case 3:
4797 if(fTrackingPhase.Contains("Clusters2Tracks"))
4798 { mode=3; } else { mode=1; }
4799 break;
4800 case 4:
4801 if(fTrackingPhase.Contains("Clusters2Tracks"))
4802 { mode=3; } else { mode=2; }
4803 break;
4804 default:
4805 mode=0;
4806 break;
4807 }
4808 if(fTrackingPhase.Contains("Default")) mode=0;
4809
4810 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4811 Double_t rToGo;
4812 Int_t shieldindex=0;
4813 if (shield.Contains("SDD")) { // SDDouter
4814 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4815 shieldindex=1;
4816 } else if (shield.Contains("SPD")) { // SPDouter
4817 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4818 shieldindex=0;
4819 } else {
4820 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4821 return 0;
4822 }
70e83b26 4823 Double_t xToGo;
4824 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4825
4826 Int_t index=2*fCurrentEsdTrack+shieldindex;
4827
4828 Double_t xOverX0,x0,lengthTimesMeanDensity;
4829 Bool_t anglecorr=kTRUE;
4830
4831 switch(mode) {
4832 case 0:
4833 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4834 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4835 lengthTimesMeanDensity = xOverX0*x0;
4836 break;
4837 case 1:
4838 if (!t->PropagateToTGeo(xToGo,1)) return 0;
4839 return 1;
4840 break;
4841 case 2:
4842 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4843 xOverX0 = fxOverX0Shield[shieldindex];
4844 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
4845 break;
4846 case 3:
4847 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4848 if(fxOverX0ShieldTrks[index]<0) {
4849 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4850 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4851 (1.-t->GetSnp()*t->GetSnp()));
4852 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4853 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4854 return 1;
4855 }
4856 xOverX0 = fxOverX0ShieldTrks[index];
4857 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
4858 break;
4859 }
4860
4861 lengthTimesMeanDensity *= dir;
4862
4863 if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
4864 if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
4865
4866 return 1;
4867}
4868//------------------------------------------------------------------------
4869Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4870 Int_t layerindex,
4871 Double_t oldGlobXYZ[3],
4872 TString direction) {
4873 //-------------------------------------------------------------------
4874 // Propagate beyond layer and correct for material
4875 // (material budget in different ways according to fUseTGeo value)
4876 //-------------------------------------------------------------------
4877
4878 // Define budget mode:
4879 // 0: material from AliITSRecoParam (hard coded)
4880 // 1: material from TGeo (on the fly)
4881 // 2: material from lut
4882 // 3: material from TGeo (same for all hypotheses)
4883 Int_t mode;
4884 switch(fUseTGeo) {
4885 case 0:
4886 mode=0;
4887 break;
4888 case 1:
4889 mode=1;
4890 break;
4891 case 2:
4892 mode=2;
4893 break;
4894 case 3:
4895 if(fTrackingPhase.Contains("Clusters2Tracks"))
4896 { mode=3; } else { mode=1; }
4897 break;
4898 case 4:
4899 if(fTrackingPhase.Contains("Clusters2Tracks"))
4900 { mode=3; } else { mode=2; }
4901 break;
4902 default:
4903 mode=0;
4904 break;
4905 }
4906 if(fTrackingPhase.Contains("Default")) mode=0;
4907
4908 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4909
4910 Double_t r=fgLayers[layerindex].GetR();
4911 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4912
4913 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4914 Double_t xToGo;
4915 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4916
4917 Int_t index=6*fCurrentEsdTrack+layerindex;
4918
4919 // Bring the track beyond the material
4920 if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
4921 Double_t globXYZ[3];
d1181f10 4922 if (!t->GetXYZ(globXYZ)) return 0;
e50912db 4923
4924 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
4925 Double_t mparam[7];
4926 Bool_t anglecorr=kTRUE;
4927
4928 switch(mode) {
4929 case 0:
4930 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4931 lengthTimesMeanDensity = xOverX0*x0;
4932 break;
4933 case 1:
4934 AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
4935 if(mparam[1]>900000) return 0;
4936 xOverX0=mparam[1];
4937 lengthTimesMeanDensity=mparam[0]*mparam[4];
4938 anglecorr=kFALSE;
4939 break;
4940 case 2:
4941 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4942 xOverX0 = fxOverX0Layer[layerindex];
4943 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
4944 break;
4945 case 3:
4946 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
4947 if(fxOverX0LayerTrks[index]<0) {
4948 AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
4949 if(mparam[1]>900000) return 0;
4950 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4951 (1.-t->GetSnp()*t->GetSnp()));
4952 xOverX0=mparam[1]/angle;
4953 lengthTimesMeanDensity=mparam[0]*mparam[4]/angle;
4954 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0);
4955 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity);
4956 }
4957 xOverX0 = fxOverX0LayerTrks[index];
4958 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
4959 break;
4960 }
4961
4962 lengthTimesMeanDensity *= dir;
4963
4964 if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
4965
4966 return 1;
4967}
4968//------------------------------------------------------------------------
4969void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4970 //-----------------------------------------------------------------
4971 // Initialize LUT for storing material for each prolonged track
4972 //-----------------------------------------------------------------
4973 fxOverX0PipeTrks = new Float_t[ntracks];
4974 fxTimesRhoPipeTrks = new Float_t[ntracks];
4975 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4976 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4977 fxOverX0LayerTrks = new Float_t[ntracks*6];
4978 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4979
4980 for(Int_t i=0; i<ntracks; i++) {
4981 fxOverX0PipeTrks[i] = -1.;
4982 fxTimesRhoPipeTrks[i] = -1.;
4983 }
4984 for(Int_t j=0; j<ntracks*2; j++) {
4985 fxOverX0ShieldTrks[j] = -1.;
4986 fxTimesRhoShieldTrks[j] = -1.;
4987 }
4988 for(Int_t k=0; k<ntracks*6; k++) {
4989 fxOverX0LayerTrks[k] = -1.;
4990 fxTimesRhoLayerTrks[k] = -1.;
4991 }
4992
4993 fNtracks = ntracks;
4994
4995 return;
4996}
4997//------------------------------------------------------------------------
4998void AliITStrackerMI::DeleteTrksMaterialLUT() {
4999 //-----------------------------------------------------------------
5000 // Delete LUT for storing material for each prolonged track
5001 //-----------------------------------------------------------------
5002 if(fxOverX0PipeTrks) {
5003 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
5004 }
5005 if(fxOverX0ShieldTrks) {
5006 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
5007 }
5008
5009 if(fxOverX0LayerTrks) {
5010 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
5011 }
5012 if(fxTimesRhoPipeTrks) {
5013 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
5014 }
5015 if(fxTimesRhoShieldTrks) {
5016 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
5017 }
5018 if(fxTimesRhoLayerTrks) {
5019 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
5020 }
5021 return;
5022}
5023//------------------------------------------------------------------------
6518a6c5 5024Int_t AliITStrackerMI::CheckSkipLayer(AliITStrackMI *track,
5025 Int_t ilayer,Int_t idet) const {
2755f080 5026 //-----------------------------------------------------------------
5027 // This method is used to decide whether to allow a prolongation
5028 // without clusters, because we want to skip the layer.
5029 // In this case the return value is > 0:
5030 // return 1: the user requested to skip a layer
5031 // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
5032 //-----------------------------------------------------------------
e43c066c 5033
2755f080 5034 if (AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) return 1;
51ad6848 5035
2755f080 5036 if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
5037 // check if track will cross SPD outer layer
5038 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 5039 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 5040 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
5041 }
5042 }
51ad6848 5043
2755f080 5044 return 0;
5045}
5046//------------------------------------------------------------------------
23197852 5047Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 5048 Int_t ilayer,Int_t idet,
1c97ce2f 5049 Double_t dz,Double_t dy,
23197852 5050 Bool_t noClusters) const {
6518a6c5 5051 //-----------------------------------------------------------------
5052 // This method is used to decide whether to allow a prolongation
ae00569a 5053 // without clusters, because there is a dead zone in the road.
6518a6c5 5054 // In this case the return value is > 0:
5055 // return 1: dead zone at z=0,+-7cm in SPD
23197852 5056 // return 2: all road is "bad" (dead or noisy) from the OCDB
5057 // return 3: something "bad" (dead or noisy) from the OCDB
6518a6c5 5058 //-----------------------------------------------------------------
5059
5060 // check dead zones at z=0,+-7cm in the SPD
5061 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
5062 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
5063 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
5064 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
5065 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
5066 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
5067 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
5068 for (Int_t i=0; i<3; i++)
1c97ce2f 5069 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) return 1;
6518a6c5 5070 }
5071
23197852 5072 // check bad zones from OCDB
5073 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 5074
23197852 5075 if (idet<0) return 0;
ae00569a 5076
23197852 5077 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
5078
5079 // check if this detector is bad
5080 if (det.IsBad()) {
5081 //printf("lay %d bad detector %d\n",ilayer,idet);
5082 return 2;
5083 }
5084
5085 Int_t detType=-1;
5086 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
5087 if (ilayer==0 || ilayer==1) { // ---------- SPD
5088 detType = 0;
5089 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
5090 detType = 1;
5091 detSizeFactorX *= 2.;
5092 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
5093 detType = 2;
5094 }
5095 AliITSsegmentation *segm = (AliITSsegmentation*)fDetTypeRec->GetSegmentationModel(detType);
5096 if (detType==2) segm->SetLayer(ilayer+1);
5097 Float_t detSizeX = detSizeFactorX*segm->Dx();
5098 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
5099
5100 // check if the road overlaps with bad chips
5101 Float_t xloc,zloc;
d1181f10 5102 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return 0;
1c97ce2f 5103 Float_t zlocmin = zloc-dz;
5104 Float_t zlocmax = zloc+dz;
5105 Float_t xlocmin = xloc-dy;
5106 Float_t xlocmax = xloc+dy;
23197852 5107 Int_t chipsInRoad[100];
5108
5109 if (TMath::Max(TMath::Abs(xlocmin),TMath::Abs(xlocmax))>0.5*detSizeX ||
5110 TMath::Max(TMath::Abs(zlocmin),TMath::Abs(zlocmax))>0.5*detSizeZ) return 0;
5111 //printf("lay %d det %d zmim zmax %f %f xmin xmax %f %f %f %f\n",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,segm->Dx(),segm->Dz());
5112 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
5113 //printf("lay %d nChipsInRoad %d\n",ilayer,nChipsInRoad);
5114 if (!nChipsInRoad) return 0;
5115
5116 Bool_t anyBad=kFALSE,anyGood=kFALSE;
5117 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
5118 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
5119 //printf(" chip %d bad %d\n",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh]));
5120 if (det.IsChipBad(chipsInRoad[iCh])) {
5121 anyBad=kTRUE;
5122 } else {
5123 anyGood=kTRUE;
5124 }
6518a6c5 5125 }
5126
23197852 5127 if (!anyGood) return 2; // all chips in road are bad
5128
5129 if (anyBad) return 3; // at least a bad chip in road
5130
5131
5132 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
5133 || ilayer==4 || ilayer==5 // SSD
5134 || !noClusters) return 0;
5135
5136 // There are no clusters in road: check if there is at least
5137 // a bad SPD pixel or SDD anode
5138
5139 if(ilayer==1 || ilayer==3 || ilayer==5)
5140 idet += AliITSgeomTGeo::GetNLadders(ilayer)*AliITSgeomTGeo::GetNDetectors(ilayer);
5141
5142 //if (fITSChannelStatus->AnyBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax)) return 3;
5143
5144 if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
5145
6518a6c5 5146 return 0;
5147}
5148//------------------------------------------------------------------------
ae00569a 5149Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
5150 AliITStrackMI *track,
5151 Float_t &xloc,Float_t &zloc) const {
5152 //-----------------------------------------------------------------
5153 // Gives position of track in local module ref. frame
5154 //-----------------------------------------------------------------
5155
5156 xloc=0.;
5157 zloc=0.;
5158
5159 if(idet<0) return kFALSE;
5160
5161 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
5162
5163 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 5164
ae00569a 5165 Int_t det = idet - (lad-1)*ndet + 1;
5166
5167 Double_t xyzGlob[3],xyzLoc[3];
5168
1c97ce2f 5169 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
5170 // take into account the misalignment: xyz at real detector plane
d1181f10 5171 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 5172
d1181f10 5173 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 5174
5175 xloc = (Float_t)xyzLoc[0];
5176 zloc = (Float_t)xyzLoc[2];
5177
5178 return kTRUE;
5179}
5180//------------------------------------------------------------------------
0ed58a47 5181Bool_t AliITStrackerMI::IsOKForPlaneEff(AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 5182//
5183// Method to be optimized further:
5184// Aim: decide whether a track can be used for PlaneEff evaluation
5185// the decision is taken based on the track quality at the layer under study
5186// no information on the clusters on this layer has to be used
5187// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
5188// the cut is done on number of sigmas from the boundaries
5189//
5190// Input: Actual track, layer [0,5] under study
5191// Output: none
5192// Return: kTRUE if this is a good track
7167ae53 5193//
5194// it will apply a pre-selection to obtain good quality tracks.
5195// Here also you will have the possibility to put a control on the
5196// impact point of the track on the basic block, in order to exclude border regions
5197// this will be done by calling a proper method of the AliITSPlaneEff class.
5198//
5199// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 5200// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 5201//
5202 Int_t index[AliITSgeomTGeo::kNLayers];
5203 Int_t k;
5204 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
5205 //
5206 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
5207 index[k]=clusters[k];
5208 }
5209
0e91092f 5210 if(!fPlaneEff)
a31a139f 5211 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 5212 AliITSlayer &layer=fgLayers[ilayer];
5213 Double_t r=layer.GetR();
8a32c4b5 5214 AliITStrackMI tmp(*track);
5215
0ed58a47 5216// require a minimal number of cluster in other layers and eventually clusters in closest layers
5217 Int_t ncl=0;
5218 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
5219 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
5220 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
5221 if (tmp.GetClIndex(lay)>0) ncl++;
5222 }
5223 Bool_t nextout = kFALSE;
5224 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
5225 else nextout = ((tmp.GetClIndex(ilayer+1)>0)? kTRUE : kFALSE );
5226 Bool_t nextin = kFALSE;
5227 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
5228 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
5229 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
5230 return kFALSE;
5231 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
5232 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
5233 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
5234 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
5235
8a32c4b5 5236// detector number
5237 Double_t phi,z;
5238 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
5239 Int_t idet=layer.FindDetectorIndex(phi,z);
5240 if(idet<0) { AliInfo(Form("cannot find detector"));
5241 return kFALSE;}
5242
5243 // here check if it has good Chi Square.
5244
5245 //propagate to the intersection with the detector plane
5246 const AliITSdetector &det=layer.GetDetector(idet);
5247 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
5248
5249 Float_t locx; //
5250 Float_t locz; //
0e91092f 5251 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 5252 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5253 if(key>fPlaneEff->Nblock()) return kFALSE;
5254 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
5255 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 5256 //***************
0e91092f 5257 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 5258 //
5259 //For the time being they are hard-wired, later on from AliITSRecoParam
0e91092f 5260 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
5261 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
5262 Double_t nsigz=4;
5263 Double_t nsigx=4;
5264 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5265 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5266 // done for RecPoints
8a32c4b5 5267
1c97ce2f 5268 // exclude tracks at boundary between detectors
0e91092f 5269 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 5270 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 5271 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 5272 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
5273 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 5274
0e91092f 5275 if ( (locx-dx < blockXmn+boundaryWidth) ||
5276 (locx+dx > blockXmx-boundaryWidth) ||
5277 (locz-dz < blockZmn+boundaryWidth) ||
5278 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 5279 return kTRUE;
7167ae53 5280}
5281//------------------------------------------------------------------------
5282void AliITStrackerMI::UseTrackForPlaneEff(AliITStrackMI* track, Int_t ilayer) {
5283//
5284// This Method has to be optimized! For the time-being it uses the same criteria
5285// as those used in the search of extra clusters for overlapping modules.
5286//
5287// Method Purpose: estabilish whether a track has produced a recpoint or not
5288// in the layer under study (For Plane efficiency)
5289//
5290// inputs: AliITStrackMI* track (pointer to a usable track)
5291// outputs: none
5292// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
5293// traversed by this very track. In details:
5294// - if a cluster can be associated to the track then call
5295// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
5296// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
5297//
a31a139f 5298 if(!fPlaneEff)
5299 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 5300 AliITSlayer &layer=fgLayers[ilayer];
5301 Double_t r=layer.GetR();
7167ae53 5302 AliITStrackMI tmp(*track);
5303
5304// detector number
5305 Double_t phi,z;
5306 if (!tmp.GetPhiZat(r,phi,z)) return;
5307 Int_t idet=layer.FindDetectorIndex(phi,z);
5308
8a32c4b5 5309 if(idet<0) { AliInfo(Form("cannot find detector"));
5310 return;}
7167ae53 5311
7167ae53 5312
0e91092f 5313//propagate to the intersection with the detector plane
7167ae53 5314 const AliITSdetector &det=layer.GetDetector(idet);
5315 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 5316
1c97ce2f 5317
0e91092f 5318//***************
5319// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5320//
5321 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5322 TMath::Sqrt(tmp.GetSigmaZ2() +
5323 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5324 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5325 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5326 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5327 TMath::Sqrt(tmp.GetSigmaY2() +
5328 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5329 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5330 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5331
5332// road in global (rphi,z) [i.e. in tracking ref. system]
5333 Double_t zmin = tmp.GetZ() - dz;
5334 Double_t zmax = tmp.GetZ() + dz;
5335 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5336 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5337
5338// select clusters in road
7167ae53 5339 layer.SelectClusters(zmin,zmax,ymin,ymax);
5340
0e91092f 5341// Define criteria for track-cluster association
7167ae53 5342 Double_t msz = tmp.GetSigmaZ2() +
5343 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5344 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5345 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5346 Double_t msy = tmp.GetSigmaY2() +
5347 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5348 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5349 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 5350 if (tmp.GetConstrain()) {
7167ae53 5351 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5352 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 5353 } else {
5354 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5355 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5356 }
7167ae53 5357 msz = 1./msz; // 1/RoadZ^2
5358 msy = 1./msy; // 1/RoadY^2
0e91092f 5359//
7167ae53 5360
5361 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5362 Int_t idetc=-1;
8a32c4b5 5363 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5364 //Double_t tolerance=0.2;
5365 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 5366 idetc = cl->GetDetectorIndex();
5367 if(idet!=idetc) continue;
5368 //Int_t ilay = cl->GetLayer();
5369
5370 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5371 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5372
5373 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 5374 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5375 }*/
5376 Float_t locx; //
5377 Float_t locz; //
0e91092f 5378 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 5379//
5380 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5381 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5382 if(key>fPlaneEff->Nblock()) return;
5383 Bool_t found=kFALSE;
8a32c4b5 5384 //if (ci>=0) {
1cc5cedc 5385 Double_t chi2;
8a32c4b5 5386 while ((cl=layer.GetNextCluster(clidx))!=0) {
5387 idetc = cl->GetDetectorIndex();
5388 if(idet!=idetc) continue;
5389 // here real control to see whether the cluster can be associated to the track.
5390 // cluster not associated to track
5391 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5392 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5393 // calculate track-clusters chi2
1cc5cedc 5394 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5395 // in particular, the error associated to the cluster
8a32c4b5 5396 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5397 // chi2 cut
5398 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 5399 found=kTRUE;
8a32c4b5 5400 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 5401 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5402 // track->SetExtraModule(ilayer,idetExtra);
5403 }
5404 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 5405 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 5406 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 5407 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5408 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5409 Int_t cltype[2]={-999,-999};
0e91092f 5410
5411 tr[0]=locx;
5412 tr[1]=locz;
5413 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5414 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5415
3ebe30ad 5416 if (found){
5417 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5418 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5419 cltype[0]=layer.GetCluster(ci)->GetNy();
5420 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 5421
5422 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5423 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5424 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5425 // It is computed properly by calling the method
5426 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5427 // T
5428 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5429 //if (tmp.PropagateTo(x,0.,0.)) {
5430 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5431 AliCluster c(*layer.GetCluster(ci));
5432 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5433 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 5434 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 5435 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5436 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 5437 //}
3ebe30ad 5438 }
5439 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 5440 }
7167ae53 5441return;
5442}