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