Bug fix - Use the proper z vertex
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
CommitLineData
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);
be77c8c9 777 p.SetCharge(cl->GetQ());
ebbcf1ea 778 p.SetDriftTime(cl->GetDriftTime());
ae079791 779 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 780 switch (l) {
781 case 0:
ae079791 782 iLayer = AliGeomManager::kSPD1;
df29e9a4 783 break;
784 case 1:
ae079791 785 iLayer = AliGeomManager::kSPD2;
df29e9a4 786 break;
787 case 2:
ae079791 788 iLayer = AliGeomManager::kSDD1;
df29e9a4 789 break;
790 case 3:
ae079791 791 iLayer = AliGeomManager::kSDD2;
9a5326b1 792 break;
793 case 4:
794 iLayer = AliGeomManager::kSSD1;
795 break;
796 case 5:
797 iLayer = AliGeomManager::kSSD2;
798 break;
799 default:
800 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
801 break;
802 };
803 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
804 p.SetVolumeID((UShort_t)volid);
805 return kTRUE;
806}
807//------------------------------------------------------------------------
808Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
809 AliTrackPoint& p, const AliESDtrack *t) {
810 //--------------------------------------------------------------------
811 // Get track space point with index i
812 // (assign error estimated during the tracking)
813 //--------------------------------------------------------------------
814
815 Int_t l=(index & 0xf0000000) >> 28;
816 Int_t c=(index & 0x0fffffff) >> 00;
817 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
818 Int_t idet = cl->GetDetectorIndex();
819 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
820
821 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
822 Float_t detxy[2];
823 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
824 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
825 Double_t alpha = t->GetAlpha();
826 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
827 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
828 phi += alpha-det.GetPhi();
829 Float_t tgphi = TMath::Tan(phi);
830
831 Float_t tgl = t->GetTgl(); // tgl about const along track
832 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
833
834 Float_t errlocalx,errlocalz;
8c139cf3 835 Bool_t addMisalErr=kFALSE;
836 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz,addMisalErr);
9a5326b1 837
838 Float_t xyz[3];
839 Float_t cov[6];
840 cl->GetGlobalXYZ(xyz);
841 // cl->GetGlobalCov(cov);
842 Float_t pos[3] = {0.,0.,0.};
843 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
844 tmpcl.GetGlobalCov(cov);
845
846 p.SetXYZ(xyz, cov);
be77c8c9 847 p.SetCharge(cl->GetQ());
ebbcf1ea 848 p.SetDriftTime(cl->GetDriftTime());
9a5326b1 849
850 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
851 switch (l) {
852 case 0:
853 iLayer = AliGeomManager::kSPD1;
854 break;
855 case 1:
856 iLayer = AliGeomManager::kSPD2;
857 break;
858 case 2:
859 iLayer = AliGeomManager::kSDD1;
860 break;
861 case 3:
862 iLayer = AliGeomManager::kSDD2;
df29e9a4 863 break;
864 case 4:
ae079791 865 iLayer = AliGeomManager::kSSD1;
df29e9a4 866 break;
867 case 5:
ae079791 868 iLayer = AliGeomManager::kSSD2;
df29e9a4 869 break;
870 default:
871 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
872 break;
873 };
ae079791 874 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
df29e9a4 875 p.SetVolumeID((UShort_t)volid);
876 return kTRUE;
877}
44347160 878//------------------------------------------------------------------------
81e97e0d 879void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 880{
881 //--------------------------------------------------------------------
882 // Follow prolongation tree
883 //--------------------------------------------------------------------
81e97e0d 884 //
afd25725 885 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
886 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
887
2755f080 888
b9671574 889 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 890 if (esd->GetV0Index(0)>0) {
81e97e0d 891 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 892 // mapping of ESD track is different as ITS track in Containers
81e97e0d 893 // Need something more stable
44347160 894 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 895 for (Int_t i=0;i<3;i++){
896 Int_t index = esd->GetV0Index(i);
897 if (index==0) break;
d6a49f20 898 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 899 if (vertex->GetStatus()<0) continue; // rejected V0
900 //
afd25725 901 if (esd->GetSign()>0) {
902 vertex->SetIndex(0,esdindex);
903 } else {
904 vertex->SetIndex(1,esdindex);
905 }
81e97e0d 906 }
907 }
908 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
909 if (!bestarray){
910 bestarray = new TObjArray(5);
911 fBestHypothesys.AddAt(bestarray,esdindex);
912 }
e43c066c 913
81e97e0d 914 //
e43c066c 915 //setup tree of the prolongations
916 //
15dd636f 917 static AliITStrackMI tracks[7][100];
918 AliITStrackMI *currenttrack;
919 static AliITStrackMI currenttrack1;
920 static AliITStrackMI currenttrack2;
921 static AliITStrackMI backuptrack;
e43c066c 922 Int_t ntracks[7];
923 Int_t nindexes[7][100];
924 Float_t normalizedchi2[100];
925 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 926 otrack->SetNSkipped(0);
15dd636f 927 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 928 ntracks[6]=1;
81e97e0d 929 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 930 Int_t modstatus = 1; // found
931 Float_t xloc,zloc;
e43c066c 932 //
933 //
934 // follow prolongations
e50912db 935 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
1c97ce2f 936 //printf("FollowProlongationTree: layer %d\n",ilayer);
2755f080 937 fI = ilayer;
e43c066c 938 //
2755f080 939 AliITSlayer &layer=fgLayers[ilayer];
940 Double_t r = layer.GetR();
e43c066c 941 ntracks[ilayer]=0;
942 //
943 //
2755f080 944 Int_t nskipped=0;
e43c066c 945 Float_t nused =0;
e50912db 946 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 947 //set current track
948 if (ntracks[ilayer]>=100) break;
b9671574 949 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
950 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 951 if (ntracks[ilayer]>15+ilayer){
b9671574 952 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
953 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 954 }
955
15dd636f 956 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 957
afd25725 958 // material between SSD and SDD, SDD and SPD
e50912db 959 if (ilayer==3)
960 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
961 if (ilayer==1)
962 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 963
2755f080 964 // detector number
8602c008 965 Double_t phi,z;
966 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 967 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 968
969 Double_t trackGlobXYZ1[3];
970 currenttrack1.GetXYZ(trackGlobXYZ1);
971
2755f080 972 // Get the budget to the primary vertex for the current track being prolonged
973 Double_t budgetToPrimVertex = GetEffectiveThickness();
974
975 // check if we allow a prolongation without point
6518a6c5 976 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 977 if (skip) {
978 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 979 // propagate to the layer radius
980 Double_t xToGo; vtrack->GetLocalXat(r,xToGo);
981 vtrack->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
2755f080 982 // apply correction for material of the current layer
983 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
984 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
985 vtrack->SetClIndex(ilayer,0);
ae00569a 986 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
987 LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc); // local module coords
988 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2755f080 989 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
990 ntracks[ilayer]++;
6518a6c5 991 continue;
2755f080 992 }
993
994 // track outside layer acceptance in z
995 if (idet<0) continue;
996
997 //propagate to the intersection with the detector plane
998 const AliITSdetector &det=layer.GetDetector(idet);
999 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1000 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
1001 currenttrack2.Propagate(det.GetPhi(),det.GetR());
e43c066c 1002 currenttrack1.SetDetectorIndex(idet);
1003 currenttrack2.SetDetectorIndex(idet);
1c97ce2f 1004 LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc); // local module coords
6518a6c5 1005
afd25725 1006 //***************
1c97ce2f 1007 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1008 //
2755f080 1009 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1010 Double_t zmin,zmax,ymin,ymax;
1011 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1012
afd25725 1013 // select clusters in road
e43c066c 1014 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1015 //********************
44347160 1016
afd25725 1017 // Define criteria for track-cluster association
44347160 1018 Double_t msz = currenttrack1.GetSigmaZ2() +
1019 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1020 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1021 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1022 Double_t msy = currenttrack1.GetSigmaY2() +
1023 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1024 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1025 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1026 if (constrain) {
1027 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1028 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1029 } else {
1030 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1031 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1032 }
1033 msz = 1./msz; // 1/RoadZ^2
1034 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1035
e43c066c 1036 //
e43c066c 1037 //
afd25725 1038 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1039 //
afd25725 1040 const AliITSRecPoint *cl=0;
1041 Int_t clidx=-1;
1042 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1043 Bool_t deadzoneSPD=kFALSE;
e43c066c 1044 currenttrack = &currenttrack1;
6518a6c5 1045
ae00569a 1046 // check if the road contains a dead zone
23197852 1047 Bool_t noClusters = kFALSE;
1048 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1c97ce2f 1049 //if (noClusters) printf("no clusters in road\n");
1050 Double_t dz=0.5*(zmax-zmin);
1051 Double_t dy=0.5*(ymax-ymin);
1052 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
ae00569a 1053 // create a prolongation without clusters (check also if there are no clusters in the road)
1054 if (dead ||
23197852 1055 (noClusters &&
ae00569a 1056 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1057 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1058 updatetrack->SetClIndex(ilayer,0);
ae00569a 1059 if (dead==0) {
1060 modstatus = 5; // no cls in road
1061 } else if (dead==1) {
1062 modstatus = 7; // holes in z in SPD
23197852 1063 } else if (dead==2 || dead==3) {
ae00569a 1064 modstatus = 2; // dead from OCDB
1065 }
1066 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1067 // apply correction for material of the current layer
1068 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1069 if (constrain) { // apply vertex constrain
1070 updatetrack->SetConstrain(constrain);
1071 Bool_t isPrim = kTRUE;
1072 if (ilayer<4) { // check that it's close to the vertex
1073 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1074 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1075 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1076 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1077 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1078 }
1079 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1080 }
ae00569a 1081 if (dead) {
1082 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1083 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1084 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1085 deadzoneSPD=kTRUE;
1086 }
6518a6c5 1087 }
1088 ntracks[ilayer]++;
1089 }
1090
ae00569a 1091 clidx=-1;
6518a6c5 1092 // loop over clusters in the road
afd25725 1093 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1094 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1095 Bool_t changedet =kFALSE;
6518a6c5 1096 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1097 Int_t idetc=cl->GetDetectorIndex();
afd25725 1098
a5d0fae6 1099 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1100 // take into account misalignment (bring track to real detector plane)
1101 Double_t xTrOrig = currenttrack->GetX();
1102 currenttrack->PropagateTo(xTrOrig+cl->GetX(),0.,0.);
afd25725 1103 // a first cut on track-cluster distance
1104 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1105 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1106 { // cluster not associated to track
1107 //printf("not ass\n");
1108 continue;
1109 }
1110 // bring track back to ideal detector plane
1111 currenttrack->PropagateTo(xTrOrig,0.,0.);
afd25725 1112 } else { // have to move track to cluster's detector
a5d0fae6 1113 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1114 // a first cut on track-cluster distance
a5d0fae6 1115 Double_t y;
1c97ce2f 1116 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1117 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1118 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1119 continue; // cluster not associated to track
e43c066c 1120 //
15dd636f 1121 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1122 changedet = kTRUE;
e43c066c 1123 currenttrack =&currenttrack2;
a5d0fae6 1124 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1125 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1126 changedet = kFALSE;
e43c066c 1127 continue;
1128 }
a5d0fae6 1129 currenttrack->SetDetectorIndex(idetc);
e50912db 1130 // Get again the budget to the primary vertex
1131 // for the current track being prolonged, if had to change detector
1132 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1133 }
1134
afd25725 1135 // calculate track-clusters chi2
1136 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1137 // chi2 cut
1c97ce2f 1138 //printf("chi2 %f max %f\n",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer));
afd25725 1139 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1140 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1141 if (ntracks[ilayer]>=100) continue;
15dd636f 1142 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
b9671574 1143 updatetrack->SetClIndex(ilayer,0);
afd25725 1144 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1145
6518a6c5 1146 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1147 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1148 //printf("update failed\n");
1149 continue;
1150 }
afd25725 1151 updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
ae00569a 1152 modstatus = 1; // found
6518a6c5 1153 } else { // virtual cluster in dead zone
b9671574 1154 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
6518a6c5 1155 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1156 modstatus = 7; // holes in z in SPD
1157 }
1158
1159 if (changedet) {
1160 Float_t xlocnewdet,zlocnewdet;
1161 LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet); // local module coords
1162 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1163 } else {
1164 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1165 }
afd25725 1166 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1167
1168 // apply correction for material of the current layer
e50912db 1169 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1170
afd25725 1171 if (constrain) { // apply vertex constrain
b9671574 1172 updatetrack->SetConstrain(constrain);
e43c066c 1173 Bool_t isPrim = kTRUE;
afd25725 1174 if (ilayer<4) { // check that it's close to the vertex
b9671574 1175 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1176 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1177 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1178 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1179 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1180 }
afd25725 1181 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1182 } //apply vertex constrain
1183 ntracks[ilayer]++;
afd25725 1184 } // create new hypothesis
1c97ce2f 1185 //else printf("chi2 too large\n");
2755f080 1186 } // loop over possible prolongations
1187
1188 // allow one prolongation without clusters
6518a6c5 1189 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1190 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1191 // apply correction for material of the current layer
1192 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1193 vtrack->SetClIndex(ilayer,0);
ae00569a 1194 modstatus = 3; // skipped
1195 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1196 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1197 vtrack->IncrementNSkipped();
e43c066c 1198 ntracks[ilayer]++;
1199 }
628e7bb0 1200
2755f080 1201 // allow one prolongation without clusters for tracks with |tgl|>1.1
1202 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1203 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1204 // apply correction for material of the current layer
1205 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1206 vtrack->SetClIndex(ilayer,0);
ae00569a 1207 modstatus = 3; // skipped
1208 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1209 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1210 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1211 ntracks[ilayer]++;
1212 }
1213
e43c066c 1214
e50912db 1215 } // loop over tracks in layer ilayer+1
afd25725 1216
1217 //loop over track candidates for the current layer
e43c066c 1218 //
1219 //
1220 Int_t accepted=0;
1221
afd25725 1222 Int_t golden=0;
e43c066c 1223 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1224 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1225 if (normalizedchi2[itrack] <
1226 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1227 if (ilayer>4) {
1228 accepted++;
1229 } else {
1230 if (constrain) { // constrain
afd25725 1231 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1232 accepted++;
44347160 1233 } else { // !constrain
afd25725 1234 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1235 accepted++;
44347160 1236 }
e43c066c 1237 }
1238 }
afd25725 1239 // sort tracks by increasing normalized chi2
1240 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1241 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1242 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1243 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1244 } // end loop over layers
1245
afd25725 1246
1247 //
1248 // Now select tracks to be kept
1249 //
44347160 1250 Int_t max = constrain ? 20 : 5;
e43c066c 1251
afd25725 1252 // tracks that reach layer 0 (SPD inner)
44347160 1253 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1254 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1255 if (track.GetNumberOfClusters()<2) continue;
afd25725 1256 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1257 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1258 continue;
1259 }
15dd636f 1260 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1261 }
afd25725 1262
1263 // tracks that reach layer 1 (SPD outer)
628e7bb0 1264 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1265 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1266 if (track.GetNumberOfClusters()<4) continue;
afd25725 1267 if (!constrain && track.GetNormChi2(1) >
1268 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1269 if (constrain) track.IncrementNSkipped();
81e97e0d 1270 if (!constrain) {
b9671574 1271 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1272 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1273 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1274 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1275 }
1276 }
15dd636f 1277 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1278 }
afd25725 1279
6518a6c5 1280 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1281 if (!constrain){
628e7bb0 1282 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1283 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1284 if (track.GetNumberOfClusters()<3) continue;
afd25725 1285 if (!constrain && track.GetNormChi2(2) >
1286 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1287 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1288 if (!constrain){
b9671574 1289 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1290 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1291 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1292 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1293 }
1294 }
15dd636f 1295 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1296 }
1297 }
81e97e0d 1298
afd25725 1299 if (!constrain) {
81e97e0d 1300 //
afd25725 1301 // register best track of each layer - important for V0 finder
81e97e0d 1302 //
1303 for (Int_t ilayer=0;ilayer<5;ilayer++){
1304 if (ntracks[ilayer]==0) continue;
1305 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1306 if (track.GetNumberOfClusters()<1) continue;
1307 CookLabel(&track,0);
1308 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1309 }
1310 }
1311 //
1312 // update TPC V0 information
1313 //
b9671574 1314 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1315 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1316 for (Int_t i=0;i<3;i++){
b9671574 1317 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1318 if (index==0) break;
44347160 1319 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1320 if (vertex->GetStatus()<0) continue; // rejected V0
1321 //
6c94f330 1322 if (otrack->GetSign()>0) {
81e97e0d 1323 vertex->SetIndex(0,esdindex);
1324 }
1325 else{
1326 vertex->SetIndex(1,esdindex);
1327 }
1328 //find nearest layer with track info
b75d63a7 1329 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1330 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1331 Int_t nearest = nearestold;
1332 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1333 if (ntracks[nearest]==0){
1334 nearest = ilayer;
1335 }
1336 }
1337 //
1338 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1339 if (nearestold<5&&nearest<5){
b9671574 1340 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1341 if (accept){
6c94f330 1342 if (track.GetSign()>0) {
b75d63a7 1343 vertex->SetParamP(track);
81e97e0d 1344 vertex->Update(fprimvertex);
44347160 1345 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1346 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1347 }else{
b75d63a7 1348 vertex->SetParamN(track);
81e97e0d 1349 vertex->Update(fprimvertex);
1350 //vertex->SetIndex(1,track.fESDtrack->GetID());
1351 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1352 }
1353 vertex->SetStatus(vertex->GetStatus()+1);
1354 }else{
44347160 1355 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1356 }
1357 }
81e97e0d 1358 }
afd25725 1359 }
1360
e43c066c 1361}
44347160 1362//------------------------------------------------------------------------
e43c066c 1363AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1364{
1365 //--------------------------------------------------------------------
1366 //
1367 //
1368 return fgLayers[layer];
1369}
44347160 1370//------------------------------------------------------------------------
8221b41b 1371AliITStrackerMI::AliITSlayer::AliITSlayer():
1372fR(0),
1373fPhiOffset(0),
1374fNladders(0),
1375fZOffset(0),
1376fNdetectors(0),
1377fDetectors(0),
1378fN(0),
1379fDy5(0),
1380fDy10(0),
1381fDy20(0),
1382fClustersCs(0),
1383fClusterIndexCs(0),
1384fYcs(0),
1385fZcs(0),
1386fNcs(0),
1387fCurrentSlice(-1),
1388fZmax(0),
1389fYmin(0),
1390fYmax(0),
1391fI(0),
1392fImax(0),
1393fSkip(0),
1394fAccepted(0),
1395fRoad(0){
e43c066c 1396 //--------------------------------------------------------------------
1397 //default AliITSlayer constructor
1398 //--------------------------------------------------------------------
e50912db 1399 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1400 fClusterWeight[i]=0;
1401 fClusterTracks[0][i]=-1;
1402 fClusterTracks[1][i]=-1;
1403 fClusterTracks[2][i]=-1;
1404 fClusterTracks[3][i]=-1;
1405 }
1406}
44347160 1407//------------------------------------------------------------------------
e43c066c 1408AliITStrackerMI::AliITSlayer::
8221b41b 1409AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1410fR(r),
1411fPhiOffset(p),
1412fNladders(nl),
1413fZOffset(z),
1414fNdetectors(nd),
1415fDetectors(0),
1416fN(0),
1417fDy5(0),
1418fDy10(0),
1419fDy20(0),
1420fClustersCs(0),
1421fClusterIndexCs(0),
1422fYcs(0),
1423fZcs(0),
1424fNcs(0),
1425fCurrentSlice(-1),
1426fZmax(0),
1427fYmin(0),
1428fYmax(0),
1429fI(0),
1430fImax(0),
1431fSkip(0),
1432fAccepted(0),
1433fRoad(0) {
e43c066c 1434 //--------------------------------------------------------------------
1435 //main AliITSlayer constructor
1436 //--------------------------------------------------------------------
e43c066c 1437 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1438 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1439}
44347160 1440//------------------------------------------------------------------------
8221b41b 1441AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1442fR(layer.fR),
1443fPhiOffset(layer.fPhiOffset),
1444fNladders(layer.fNladders),
1445fZOffset(layer.fZOffset),
1446fNdetectors(layer.fNdetectors),
1447fDetectors(layer.fDetectors),
1448fN(layer.fN),
1449fDy5(layer.fDy5),
1450fDy10(layer.fDy10),
1451fDy20(layer.fDy20),
1452fClustersCs(layer.fClustersCs),
1453fClusterIndexCs(layer.fClusterIndexCs),
1454fYcs(layer.fYcs),
1455fZcs(layer.fZcs),
1456fNcs(layer.fNcs),
1457fCurrentSlice(layer.fCurrentSlice),
1458fZmax(layer.fZmax),
1459fYmin(layer.fYmin),
1460fYmax(layer.fYmax),
1461fI(layer.fI),
1462fImax(layer.fImax),
1463fSkip(layer.fSkip),
1464fAccepted(layer.fAccepted),
1465fRoad(layer.fRoad){
1466 //Copy constructor
1467}
44347160 1468//------------------------------------------------------------------------
e43c066c 1469AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1470 //--------------------------------------------------------------------
1471 // AliITSlayer destructor
1472 //--------------------------------------------------------------------
23197852 1473 delete [] fDetectors;
e43c066c 1474 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1475 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1476 fClusterWeight[i]=0;
1477 fClusterTracks[0][i]=-1;
1478 fClusterTracks[1][i]=-1;
1479 fClusterTracks[2][i]=-1;
1480 fClusterTracks[3][i]=-1;
1481 }
1482}
44347160 1483//------------------------------------------------------------------------
e43c066c 1484void AliITStrackerMI::AliITSlayer::ResetClusters() {
1485 //--------------------------------------------------------------------
1486 // This function removes loaded clusters
1487 //--------------------------------------------------------------------
1488 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1489 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1490 fClusterWeight[i]=0;
1491 fClusterTracks[0][i]=-1;
1492 fClusterTracks[1][i]=-1;
1493 fClusterTracks[2][i]=-1;
1494 fClusterTracks[3][i]=-1;
1495 }
1496
1497 fN=0;
1498 fI=0;
1499}
44347160 1500//------------------------------------------------------------------------
e43c066c 1501void AliITStrackerMI::AliITSlayer::ResetWeights() {
1502 //--------------------------------------------------------------------
1503 // This function reset weights of the clusters
1504 //--------------------------------------------------------------------
e50912db 1505 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1506 fClusterWeight[i]=0;
1507 fClusterTracks[0][i]=-1;
1508 fClusterTracks[1][i]=-1;
1509 fClusterTracks[2][i]=-1;
1510 fClusterTracks[3][i]=-1;
1511 }
1512 for (Int_t i=0; i<fN;i++) {
00a7cc50 1513 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1514 if (cl&&cl->IsUsed()) cl->Use();
1515 }
1516
1517}
44347160 1518//------------------------------------------------------------------------
e43c066c 1519void AliITStrackerMI::AliITSlayer::ResetRoad() {
1520 //--------------------------------------------------------------------
1521 // This function calculates the road defined by the cluster density
1522 //--------------------------------------------------------------------
1523 Int_t n=0;
1524 for (Int_t i=0; i<fN; i++) {
1525 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1526 }
afd25725 1527 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1528}
44347160 1529//------------------------------------------------------------------------
afd25725 1530Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1531 //--------------------------------------------------------------------
1532 //This function adds a cluster to this layer
1533 //--------------------------------------------------------------------
e50912db 1534 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1535 ::Error("InsertCluster","Too many clusters !\n");
1536 return 1;
1537 }
1538 fCurrentSlice=-1;
afd25725 1539 fClusters[fN]=cl;
1d4090b7 1540 fN++;
afd25725 1541 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1542 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1543 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1544 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1545 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1546
1547 return 0;
1548}
44347160 1549//------------------------------------------------------------------------
e43c066c 1550void AliITStrackerMI::AliITSlayer::SortClusters()
1551{
1552 //
1553 //sort clusters
1554 //
00a7cc50 1555 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1556 Float_t *z = new Float_t[fN];
1557 Int_t * index = new Int_t[fN];
1558 //
1559 for (Int_t i=0;i<fN;i++){
1560 z[i] = fClusters[i]->GetZ();
1561 }
1562 TMath::Sort(fN,z,index,kFALSE);
1563 for (Int_t i=0;i<fN;i++){
1564 clusters[i] = fClusters[index[i]];
1565 }
1566 //
1567 for (Int_t i=0;i<fN;i++){
1568 fClusters[i] = clusters[i];
1569 fZ[i] = fClusters[i]->GetZ();
1570 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1571 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1572 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1573 fY[i] = y;
1574 }
1575 delete[] index;
1576 delete[] z;
1577 delete[] clusters;
1578 //
1579
e43c066c 1580 fYB[0]=10000000;
1581 fYB[1]=-10000000;
1582 for (Int_t i=0;i<fN;i++){
1583 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1584 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1585 fClusterIndex[i] = i;
1586 }
1587 //
1588 // fill slices
1589 fDy5 = (fYB[1]-fYB[0])/5.;
1590 fDy10 = (fYB[1]-fYB[0])/10.;
1591 fDy20 = (fYB[1]-fYB[0])/20.;
1592 for (Int_t i=0;i<6;i++) fN5[i] =0;
1593 for (Int_t i=0;i<11;i++) fN10[i]=0;
1594 for (Int_t i=0;i<21;i++) fN20[i]=0;
1595 //
1596 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;}
1597 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;}
1598 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;}
1599 //
1600 //
1d4090b7 1601 for (Int_t i=0;i<fN;i++)
1602 for (Int_t irot=-1;irot<=1;irot++){
1603 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1604 // slice 5
1605 for (Int_t slice=0; slice<6;slice++){
e50912db 1606 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1607 fClusters5[slice][fN5[slice]] = fClusters[i];
1608 fY5[slice][fN5[slice]] = curY;
1609 fZ5[slice][fN5[slice]] = fZ[i];
1610 fClusterIndex5[slice][fN5[slice]]=i;
1611 fN5[slice]++;
1612 }
e43c066c 1613 }
1d4090b7 1614 // slice 10
1615 for (Int_t slice=0; slice<11;slice++){
e50912db 1616 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1617 fClusters10[slice][fN10[slice]] = fClusters[i];
1618 fY10[slice][fN10[slice]] = curY;
1619 fZ10[slice][fN10[slice]] = fZ[i];
1620 fClusterIndex10[slice][fN10[slice]]=i;
1621 fN10[slice]++;
1622 }
e43c066c 1623 }
1d4090b7 1624 // slice 20
1625 for (Int_t slice=0; slice<21;slice++){
e50912db 1626 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1627 fClusters20[slice][fN20[slice]] = fClusters[i];
1628 fY20[slice][fN20[slice]] = curY;
1629 fZ20[slice][fN20[slice]] = fZ[i];
1630 fClusterIndex20[slice][fN20[slice]]=i;
1631 fN20[slice]++;
1632 }
1633 }
e43c066c 1634 }
1d4090b7 1635
1636 //
1637 // consistency check
1638 //
1639 for (Int_t i=0;i<fN-1;i++){
1640 if (fZ[i]>fZ[i+1]){
ae00569a 1641 printf("Bug\n");
e43c066c 1642 }
1643 }
1d4090b7 1644 //
1645 for (Int_t slice=0;slice<21;slice++)
1646 for (Int_t i=0;i<fN20[slice]-1;i++){
1647 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1648 printf("Bug\n");
1d4090b7 1649 }
1650 }
1651
1652
e43c066c 1653}
44347160 1654//------------------------------------------------------------------------
e43c066c 1655Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1656 //--------------------------------------------------------------------
1657 // This function returns the index of the nearest cluster
1658 //--------------------------------------------------------------------
1659 Int_t ncl=0;
1660 const Float_t *zcl;
1661 if (fCurrentSlice<0) {
1662 ncl = fN;
1663 zcl = fZ;
1664 }
1665 else{
1666 ncl = fNcs;
1667 zcl = fZcs;;
1668 }
1669
1670 if (ncl==0) return 0;
1671 Int_t b=0, e=ncl-1, m=(b+e)/2;
1672 for (; b<e; m=(b+e)/2) {
1673 // if (z > fClusters[m]->GetZ()) b=m+1;
1674 if (z > zcl[m]) b=m+1;
1675 else e=m;
1676 }
1677 return m;
1678}
44347160 1679//------------------------------------------------------------------------
1c97ce2f 1680Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1681 //--------------------------------------------------------------------
1682 // This function computes the rectangular road for this track
1683 //--------------------------------------------------------------------
1684
1685
1686 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1687 // take into account the misalignment: propagate track to misaligned detector plane
1688 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1689
1690 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1691 TMath::Sqrt(track->GetSigmaZ2() +
1692 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1693 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1694 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1695 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1696 TMath::Sqrt(track->GetSigmaY2() +
1697 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1698 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1699 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1700
1701 // track at boundary between detectors, enlarge road
1702 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1703 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1704 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1705 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1706 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1707 Float_t tgl = TMath::Abs(track->GetTgl());
1708 if (tgl > 1.) tgl=1.;
1709 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1710 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1711 Float_t snp = TMath::Abs(track->GetSnp());
1712 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1713 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1714 } // boundary
1715
1716 // add to the road a term (up to 2-3 mm) to deal with misalignments
1717 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1718 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1719
1720 Double_t r = fgLayers[ilayer].GetR();
1721 zmin = track->GetZ() - dz;
1722 zmax = track->GetZ() + dz;
1723 ymin = track->GetY() + r*det.GetPhi() - dy;
1724 ymax = track->GetY() + r*det.GetPhi() + dy;
1725
1726 // bring track back to idead detector plane
1727 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1728
1729 return kTRUE;
1730}
1731//------------------------------------------------------------------------
e43c066c 1732void AliITStrackerMI::AliITSlayer::
1733SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1734 //--------------------------------------------------------------------
1735 // This function sets the "window"
1736 //--------------------------------------------------------------------
1737
628e7bb0 1738 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1739 fYmin = ymin; fYmax =ymax;
1740 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1741 if (ymiddle<fYB[0]) {
1742 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1743 } else if (ymiddle>fYB[1]) {
1744 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1745 }
ae00569a 1746
e43c066c 1747 //
1748 fCurrentSlice =-1;
1749 // defualt take all
1750 fClustersCs = fClusters;
1751 fClusterIndexCs = fClusterIndex;
1752 fYcs = fY;
1753 fZcs = fZ;
1754 fNcs = fN;
628e7bb0 1755 //
e43c066c 1756 //is in 20 slice?
1757 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1758 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1759 if (slice<0) slice=0;
1760 if (slice>20) slice=20;
1761 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1762 if (isOK) {
1763 fCurrentSlice=slice;
1764 fClustersCs = fClusters20[fCurrentSlice];
1765 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1766 fYcs = fY20[fCurrentSlice];
1767 fZcs = fZ20[fCurrentSlice];
1768 fNcs = fN20[fCurrentSlice];
1769 }
1770 }
1771 //
1772 //is in 10 slice?
1773 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1774 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1775 if (slice<0) slice=0;
1776 if (slice>10) slice=10;
1777 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1778 if (isOK) {
1779 fCurrentSlice=slice;
1780 fClustersCs = fClusters10[fCurrentSlice];
1781 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1782 fYcs = fY10[fCurrentSlice];
1783 fZcs = fZ10[fCurrentSlice];
1784 fNcs = fN10[fCurrentSlice];
1785 }
1786 }
1787 //
1788 //is in 5 slice?
1789 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1790 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1791 if (slice<0) slice=0;
1792 if (slice>5) slice=5;
1793 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1794 if (isOK) {
e43c066c 1795 fCurrentSlice=slice;
1796 fClustersCs = fClusters5[fCurrentSlice];
1797 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1798 fYcs = fY5[fCurrentSlice];
1799 fZcs = fZ5[fCurrentSlice];
1800 fNcs = fN5[fCurrentSlice];
1801 }
1802 }
628e7bb0 1803 //
e43c066c 1804 fI=FindClusterIndex(zmin); fZmax=zmax;
1805 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1806 fSkip = 0;
1807 fAccepted =0;
6518a6c5 1808
1809 return;
e43c066c 1810}
44347160 1811//------------------------------------------------------------------------
628e7bb0 1812Int_t AliITStrackerMI::AliITSlayer::
1813FindDetectorIndex(Double_t phi, Double_t z) const {
1814 //--------------------------------------------------------------------
1815 //This function finds the detector crossed by the track
1816 //--------------------------------------------------------------------
31fb8575 1817 Double_t dphi;
1818 if (fZOffset<0) // old geometry
1819 dphi = -(phi-fPhiOffset);
1820 else // new geometry
1821 dphi = phi-fPhiOffset;
1822
6518a6c5 1823
628e7bb0 1824 if (dphi < 0) dphi += 2*TMath::Pi();
1825 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1826 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1827 if (np>=fNladders) np-=fNladders;
1828 if (np<0) np+=fNladders;
1829
6518a6c5 1830
628e7bb0 1831 Double_t dz=fZOffset-z;
6518a6c5 1832 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1833 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1834 if (nz>=fNdetectors) return -1;
1835 if (nz<0) return -1;
1836
23197852 1837 // ad hoc correction for 3rd ladder of SDD inner layer,
1838 // which is reversed (rotated by pi around local y)
1839 // this correction is OK only from AliITSv11Hybrid onwards
1840 if (GetR()>12. && GetR()<20.) { // SDD inner
1841 if(np==2) { // 3rd ladder
1842 nz = (fNdetectors-1) - nz;
1843 }
1844 }
1845 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1846
1847
628e7bb0 1848 return np*fNdetectors + nz;
1849}
44347160 1850//------------------------------------------------------------------------
ae00569a 1851const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1852{
e43c066c 1853 //--------------------------------------------------------------------
1854 // This function returns clusters within the "window"
1855 //--------------------------------------------------------------------
1856
ae00569a 1857 if (fCurrentSlice<0) {
e43c066c 1858 Double_t rpi2 = 2.*fR*TMath::Pi();
1859 for (Int_t i=fI; i<fImax; i++) {
1860 Double_t y = fY[i];
1861 if (fYmax<y) y -= rpi2;
1d4090b7 1862 if (fYmin>y) y += rpi2;
e43c066c 1863 if (y<fYmin) continue;
1864 if (y>fYmax) continue;
1865 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1866 ci=i;
ae00569a 1867 if (!test) fI=i+1;
e43c066c 1868 return fClusters[i];
1869 }
ae00569a 1870 } else {
e43c066c 1871 for (Int_t i=fI; i<fImax; i++) {
1872 if (fYcs[i]<fYmin) continue;
1873 if (fYcs[i]>fYmax) continue;
1874 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1875 ci=fClusterIndexCs[i];
ae00569a 1876 if (!test) fI=i+1;
e43c066c 1877 return fClustersCs[i];
1878 }
1879 }
1880 return 0;
1881}
44347160 1882//------------------------------------------------------------------------
e43c066c 1883Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1884const {
1885 //--------------------------------------------------------------------
afd25725 1886 // This function returns the layer thickness at this point (units X0)
e43c066c 1887 //--------------------------------------------------------------------
1888 Double_t d=0.0085;
e50912db 1889 x0=AliITSRecoParam::GetX0Air();
e43c066c 1890 if (43<fR&&fR<45) { //SSD2
1891 Double_t dd=0.0034;
1892 d=dd;
1893 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1894 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1895 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1896 for (Int_t i=0; i<12; i++) {
1897 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1898 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1899 d+=0.0034;
1900 break;
1901 }
1902 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1903 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1904 d+=0.0034;
1905 break;
1906 }
1907 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1908 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1909 }
1910 } else
1911 if (37<fR&&fR<41) { //SSD1
1912 Double_t dd=0.0034;
1913 d=dd;
1914 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1915 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1916 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1917 for (Int_t i=0; i<11; i++) {
1918 if (TMath::Abs(z-3.9*i)<0.15) {
1919 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1920 d+=dd;
1921 break;
1922 }
1923 if (TMath::Abs(z+3.9*i)<0.15) {
1924 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1925 d+=dd;
1926 break;
1927 }
1928 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1929 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1930 }
1931 } else
1932 if (13<fR&&fR<26) { //SDD
1933 Double_t dd=0.0033;
1934 d=dd;
1935 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1936
1937 if (TMath::Abs(y-1.80)<0.55) {
1938 d+=0.016;
1939 for (Int_t j=0; j<20; j++) {
1940 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1941 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1942 }
1943 }
1944 if (TMath::Abs(y+1.80)<0.55) {
1945 d+=0.016;
1946 for (Int_t j=0; j<20; j++) {
1947 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1948 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1949 }
1950 }
1951
1952 for (Int_t i=0; i<4; i++) {
1953 if (TMath::Abs(z-7.3*i)<0.60) {
1954 d+=dd;
1955 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1956 break;
1957 }
1958 if (TMath::Abs(z+7.3*i)<0.60) {
1959 d+=dd;
1960 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1961 break;
1962 }
1963 }
1964 } else
1965 if (6<fR&&fR<8) { //SPD2
1966 Double_t dd=0.0063; x0=21.5;
1967 d=dd;
1968 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 1969 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 1970 } else
1971 if (3<fR&&fR<5) { //SPD1
1972 Double_t dd=0.0063; x0=21.5;
1973 d=dd;
1974 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 1975 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 1976 }
1977
1978 return d;
1979}
44347160 1980//------------------------------------------------------------------------
23197852 1981AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
1982fR(det.fR),
1c97ce2f 1983fRmisal(det.fRmisal),
23197852 1984fPhi(det.fPhi),
1985fSinPhi(det.fSinPhi),
1986fCosPhi(det.fCosPhi),
1987fYmin(det.fYmin),
1988fYmax(det.fYmax),
1989fZmin(det.fZmin),
1990fZmax(det.fZmax),
1991fIsBad(det.fIsBad),
1992fNChips(det.fNChips),
1993fChipIsBad(det.fChipIsBad)
1994{
1995 //Copy constructor
1996}
1997//------------------------------------------------------------------------
1998void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
1999 AliITSDetTypeRec *detTypeRec)
2000{
2001 //--------------------------------------------------------------------
2002 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2003 //--------------------------------------------------------------------
2004
2005 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2006 // while in the tracker they start from 0 for each layer
2007 for(Int_t il=0; il<ilayer; il++)
2008 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2009
2010 Int_t detType;
2011 if (ilayer==0 || ilayer==1) { // ---------- SPD
2012 detType = 0;
2013 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2014 detType = 1;
2015 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2016 detType = 2;
2017 } else {
2018 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2019 return;
2020 }
2021
2022 // Get calibration from AliITSDetTypeRec
2023 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
2024 AliITSCalibration *calibSPDdead = 0;
2025 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2026 if (calib->IsBad() ||
2027 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2028 {
2029 SetBad();
359ac74d 2030 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2031 }
2032
2033 // Get segmentation from AliITSDetTypeRec
2034 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2035
2036 // Read info about bad chips
2037 fNChips = segm->GetMaximumChipIndex()+1;
2038 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2039 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2040 fChipIsBad = new Bool_t[fNChips];
2041 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2042 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2043 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2044 }
2045
2046 return;
2047}
2048//------------------------------------------------------------------------
e50912db 2049Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2050{
2051 //--------------------------------------------------------------------
afd25725 2052 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2053 //--------------------------------------------------------------------
e43c066c 2054
e50912db 2055 if(fUseTGeo!=0) {
2056 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2057 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2058 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2059 }
2060
afd25725 2061 // beam pipe
e50912db 2062 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2063 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2064
2065 // layers
2066 Double_t x0=0;
e43c066c 2067 Double_t xn=fgLayers[fI].GetR();
2068 for (Int_t i=0; i<fI; i++) {
2069 Double_t xi=fgLayers[i].GetR();
e50912db 2070 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2071 d+=dLayer*xi*xi;
e43c066c 2072 }
2073
afd25725 2074 // shields
e43c066c 2075 if (fI>1) {
e50912db 2076 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2077 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2078 }
e43c066c 2079 if (fI>3) {
e50912db 2080 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2081 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2082 }
e43c066c 2083 return d/(xn*xn);
2084}
44347160 2085//------------------------------------------------------------------------
e43c066c 2086Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2087 //-------------------------------------------------------------------
e43c066c 2088 // This function returns number of clusters within the "window"
2089 //--------------------------------------------------------------------
2090 Int_t ncl=0;
2091 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2092 const AliITSRecPoint *c=fClusters[i];
e43c066c 2093 if (c->GetZ() > fZmax) break;
2094 if (c->IsUsed()) continue;
2095 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2096 Double_t y=fR*det.GetPhi() + c->GetY();
2097
2098 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2099 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2100
2101 if (y<fYmin) continue;
2102 if (y>fYmax) continue;
2103 ncl++;
2104 }
2105 return ncl;
2106}
44347160 2107//------------------------------------------------------------------------
ae00569a 2108Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2109 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2110{
e43c066c 2111 //--------------------------------------------------------------------
ae00569a 2112 // This function refits the track "track" at the position "x" using
2113 // the clusters from "clusters"
ef7253ac 2114 // If "extra"==kTRUE,
ae00569a 2115 // the clusters from overlapped modules get attached to "track"
7167ae53 2116 // If "planeff"==kTRUE,
2117 // special approach for plane efficiency evaluation is applyed
e43c066c 2118 //--------------------------------------------------------------------
6518a6c5 2119
e50912db 2120 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2121 Int_t k;
e50912db 2122 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2123 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2124 for (k=0; k<nc; k++) {
ae00569a 2125 Int_t idx=clusters->GetClusterIndex(k);
2126 Int_t ilayer=(idx&0xf0000000)>>28;
2127 index[ilayer]=idx;
e43c066c 2128 }
67c1e979 2129
7167ae53 2130 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2131}
44347160 2132//------------------------------------------------------------------------
ae00569a 2133Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2134 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2135{
67c1e979 2136 //--------------------------------------------------------------------
ae00569a 2137 // This function refits the track "track" at the position "x" using
67c1e979 2138 // the clusters from array
ae00569a 2139 // If "extra"==kTRUE,
2140 // the clusters from overlapped modules get attached to "track"
7167ae53 2141 // If "planeff"==kTRUE,
2142 // special approach for plane efficiency evaluation is applyed
67c1e979 2143 //--------------------------------------------------------------------
e50912db 2144 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2145 Int_t k;
e50912db 2146 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2147 //
e50912db 2148 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2149 index[k]=clusters[k];
67c1e979 2150 }
2151
afd25725 2152 // special for cosmics: check which the innermost layer crossed
2153 // by the track
2154 Int_t innermostlayer=5;
ae00569a 2155 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2156 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2157 if(drphi < fgLayers[innermostlayer].GetR()) break;
2158 }
2159 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2160
ae00569a 2161 Int_t modstatus=1; // found
2162 Float_t xloc,zloc;
67c1e979 2163 Int_t from, to, step;
ae00569a 2164 if (xx > track->GetX()) {
e50912db 2165 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2166 step=+1;
2167 } else {
e50912db 2168 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2169 step=-1;
2170 }
ae00569a 2171 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2172
ae00569a 2173 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2174 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2175 Double_t r=layer.GetR();
afd25725 2176 if (step<0 && xx>r) break;
2177
2178 // material between SSD and SDD, SDD and SPD
6518a6c5 2179 Double_t hI=ilayer-0.5*step;
e50912db 2180 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2181 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2182 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2183 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2184
2185 // remember old position [SR, GSI 18.02.2003]
2186 Double_t oldX=0., oldY=0., oldZ=0.;
ae00569a 2187 if (track->IsStartedTimeIntegral() && step==1) {
2188 track->GetGlobalXYZat(track->GetX(),oldX,oldY,oldZ);
67c1e979 2189 }
2190 //
ae00569a 2191
afd25725 2192 Double_t oldGlobXYZ[3];
ae00569a 2193 track->GetXYZ(oldGlobXYZ);
afd25725 2194
8602c008 2195 Double_t phi,z;
ae00569a 2196 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2197
67c1e979 2198 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2199
2200 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2201 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2202 if (skip==2) {
2203 // propagate to the layer radius
ae00569a 2204 Double_t xToGo; track->GetLocalXat(r,xToGo);
2205 track->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
6518a6c5 2206 // apply correction for material of the current layer
ae00569a 2207 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2208 modstatus = 4; // out in z
2209 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
2210 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 2211 // track time update [SR, GSI 17.02.2003]
ae00569a 2212 if (track->IsStartedTimeIntegral() && step==1) {
6518a6c5 2213 Double_t newX, newY, newZ;
ae00569a 2214 track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
6518a6c5 2215 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2216 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2217 track->AddTimeStep(TMath::Sqrt(dL2));
6518a6c5 2218 }
2219 continue;
2220 }
2221
e50912db 2222 if (idet<0) return kFALSE;
ae00569a 2223
67c1e979 2224 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2225 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2226
ae00569a 2227 track->SetDetectorIndex(idet);
2228 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
67c1e979 2229
23197852 2230 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2231
2232 const AliITSRecPoint *clAcc=0;
44347160 2233 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2234
6518a6c5 2235 Int_t idx=index[ilayer];
ae00569a 2236 if (idx>=0) { // cluster in this layer
2237 modstatus = 6; // no refit
2238 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2239 if (cl) {
2240 if (idet != cl->GetDetectorIndex()) {
2241 idet=cl->GetDetectorIndex();
a5d0fae6 2242 const AliITSdetector &detc=layer.GetDetector(idet);
2243 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2244 track->SetDetectorIndex(idet);
2245 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
2246 }
ae00569a 2247 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2248 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2249 if (chi2<maxchi2) {
2250 clAcc=cl;
2251 maxchi2=chi2;
2252 modstatus = 1; // found
2253 } else {
7167ae53 2254 return kFALSE; //
ae00569a 2255 }
2256 }
2257 } else { // no cluster in this layer
2258 if (skip==1) {
2259 modstatus = 3; // skipped
0ed58a47 2260 // Plane Eff determination:
2261 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2262 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2263 UseTrackForPlaneEff(track,ilayer);
7167ae53 2264 }
ae00569a 2265 } else {
2266 modstatus = 5; // no cls in road
2267 // check dead
1c97ce2f 2268 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2269 dz = 0.5*(zmax-zmin);
2270 dy = 0.5*(ymax-ymin);
2271 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2272 if (dead==1) modstatus = 7; // holes in z in SPD
23197852 2273 if (dead==2 || dead==3) modstatus = 2; // dead from OCDB
ae00569a 2274 }
e43c066c 2275 }
ae00569a 2276
2277 if (clAcc) {
2278 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2279 track->SetSampledEdx(clAcc->GetQ(),track->GetNumberOfClusters()-1);
e43c066c 2280 }
ae00569a 2281 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2282
2283
2284 if (extra) { // search for extra clusters in overlapped modules
2285 AliITStrackV2 tmp(*track);
1c97ce2f 2286 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2287 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2288
2289 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2290 Int_t idetExtra=-1;
a5d0fae6 2291 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2292 Double_t tolerance=0.1;
ae00569a 2293 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2294 // only clusters in another module! (overlaps)
2295 idetExtra = clExtra->GetDetectorIndex();
2296 if (idet == idetExtra) continue;
2297
a5d0fae6 2298 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2299
1c97ce2f 2300 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2301 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2302 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2303 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2304
2305 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2306 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2307 }
2308 if (cci>=0) {
2309 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2310 track->SetExtraModule(ilayer,idetExtra);
2311 }
2312 } // end search for extra clusters in overlapped modules
1c97ce2f 2313
afd25725 2314 // Correct for material of the current layer
ae00569a 2315 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2316
2317 // track time update [SR, GSI 17.02.2003]
ae00569a 2318 if (track->IsStartedTimeIntegral() && step==1) {
e43c066c 2319 Double_t newX, newY, newZ;
ae00569a 2320 track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
e43c066c 2321 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2322 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2323 track->AddTimeStep(TMath::Sqrt(dL2));
e43c066c 2324 }
2325 //
2326
ae00569a 2327 } // end loop on layers
2328
2329 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2330
e43c066c 2331 return kTRUE;
2332}
44347160 2333//------------------------------------------------------------------------
15dd636f 2334Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2335{
2336 //
2337 // calculate normalized chi2
2338 // return NormalizedChi2(track,0);
2339 Float_t chi2 = 0;
2340 Float_t sum=0;
2341 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2342 // track->fdEdxMismatch=0;
2343 Float_t dedxmismatch =0;
2344 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2345 if (mode<100){
2346 for (Int_t i = 0;i<6;i++){
b9671574 2347 if (track->GetClIndex(i)>0){
e43c066c 2348 Float_t cerry, cerrz;
2349 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2350 else
b9671574 2351 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2352 cerry*=cerry;
2353 cerrz*=cerrz;
b9671574 2354 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2355 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2356 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2357 if (ratio<0.5) {
2358 cchi2+=(0.5-ratio)*10.;
2359 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2360 dedxmismatch+=(0.5-ratio)*10.;
2361 }
2362 }
2363 if (i<2 ||i>3){
b9671574 2364 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2365 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2366 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2367 if (i<2) chi2+=2*cl->GetDeltaProbability();
2368 }
2369 chi2+=cchi2;
2370 sum++;
2371 }
2372 }
b9671574 2373 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2374 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2375 }
2376 }
2377 else{
2378 for (Int_t i = 0;i<4;i++){
b9671574 2379 if (track->GetClIndex(i)>0){
e43c066c 2380 Float_t cerry, cerrz;
2381 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2382 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2383 cerry*=cerry;
2384 cerrz*=cerrz;
b9671574 2385 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2386 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2387 sum++;
2388 }
2389 }
2390 for (Int_t i = 4;i<6;i++){
b9671574 2391 if (track->GetClIndex(i)>0){
e43c066c 2392 Float_t cerry, cerrz;
2393 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2394 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2395 cerry*=cerry;
2396 cerrz*=cerrz;
2397 Float_t cerryb, cerrzb;
2398 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2399 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2400 cerryb*=cerryb;
2401 cerrzb*=cerrzb;
b9671574 2402 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2403 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2404 sum++;
2405 }
2406 }
2407 }
b9671574 2408 if (track->GetESDtrack()->GetTPCsignal()>85){
2409 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2410 if (ratio<0.5) {
2411 chi2+=(0.5-ratio)*5.;
2412 }
2413 if (ratio>2){
2414 chi2+=(ratio-2.0)*3;
2415 }
2416 }
2417 //
b9671574 2418 Double_t match = TMath::Sqrt(track->GetChi22());
2419 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2420 if (!track->GetConstrain()) {
2421 if (track->GetNumberOfClusters()>2) {
2422 match/=track->GetNumberOfClusters()-2.;
2423 } else {
2424 match=0;
2425 }
2426 }
e43c066c 2427 if (match<0) match=0;
b9671574 2428 Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
2429 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2430 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2431 1./(1.+track->GetNSkipped()));
e43c066c 2432
2433 return normchi2;
2434}
44347160 2435//------------------------------------------------------------------------
15dd636f 2436Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
e43c066c 2437{
2438 //
2439 // return matching chi2 between two tracks
15dd636f 2440 AliITStrackMI track3(*track2);
e43c066c 2441 track3.Propagate(track1->GetAlpha(),track1->GetX());
2442 TMatrixD vec(5,1);
6c94f330 2443 vec(0,0)=track1->GetY() - track3.GetY();
2444 vec(1,0)=track1->GetZ() - track3.GetZ();
2445 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2446 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2447 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2448 //
2449 TMatrixD cov(5,5);
6c94f330 2450 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2451 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2452 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2453 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2454 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2455
6c94f330 2456 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2457 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2458 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2459 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2460 //
6c94f330 2461 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2462 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2463 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2464 //
6c94f330 2465 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2466 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2467 //
6c94f330 2468 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2469
2470 cov.Invert();
2471 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2472 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2473 return chi2(0,0);
2474}
44347160 2475//------------------------------------------------------------------------
6518a6c5 2476Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr)
e43c066c 2477{
2478 //
afd25725 2479 // return probability that given point (characterized by z position and error)
2480 // is in SPD dead zone
e43c066c 2481 //
afd25725 2482 Double_t probability = 0.;
e43c066c 2483 Double_t absz = TMath::Abs(zpos);
afd25725 2484 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2485 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2486 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2487 Double_t zmin, zmax;
2488 if (zpos<-6.) { // dead zone at z = -7
e50912db 2489 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2490 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2491 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2492 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2493 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2494 } else if (absz<2.) { // dead zone at z = 0
e50912db 2495 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2496 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2497 } else {
2498 zmin = 0.;
2499 zmax = 0.;
e43c066c 2500 }
afd25725 2501 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2502 // dead zone)
2503 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2504 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2505 return probability;
2506}
44347160 2507//------------------------------------------------------------------------
15dd636f 2508Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
e43c066c 2509{
2510 //
2511 // calculate normalized chi2
2512 Float_t chi2[6];
2513 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2514 Float_t ncl = 0;
2515 for (Int_t i = 0;i<6;i++){
b9671574 2516 if (TMath::Abs(track->GetDy(i))>0){
2517 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2518 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2519 ncl++;
2520 }
2521 else{chi2[i]=10000;}
2522 }
2523 Int_t index[6];
2524 TMath::Sort(6,chi2,index,kFALSE);
2525 Float_t max = float(ncl)*fac-1.;
2526 Float_t sumchi=0, sumweight=0;
2527 for (Int_t i=0;i<max+1;i++){
2528 Float_t weight = (i<max)?1.:(max+1.-i);
2529 sumchi+=weight*chi2[index[i]];
2530 sumweight+=weight;
2531 }
2532 Double_t normchi2 = sumchi/sumweight;
2533 return normchi2;
2534}
44347160 2535//------------------------------------------------------------------------
15dd636f 2536Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
e43c066c 2537{
2538 //
2539 // calculate normalized chi2
2540 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2541 Int_t npoints = 0;
2542 Double_t res =0;
2543 for (Int_t i=0;i<6;i++){
b9671574 2544 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2545 Double_t sy1 = forwardtrack->GetSigmaY(i);
2546 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2547 Double_t sy2 = backtrack->GetSigmaY(i);
2548 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2549 if (i<2){ sy2=1000.;sz2=1000;}
2550 //
b9671574 2551 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2552 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2553 //
2554 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2555 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2556 //
2557 res+= nz0*nz0+ny0*ny0;
2558 npoints++;
2559 }
2560 if (npoints>1) return
6c23ffed 2561 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2562 //2*forwardtrack->fNUsed+
b9671574 2563 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2564 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2565 return 1000;
2566}
44347160 2567//------------------------------------------------------------------------
e43c066c 2568Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2569 //--------------------------------------------------------------------
2570 // Return pointer to a given cluster
2571 //--------------------------------------------------------------------
2572 Int_t l=(index & 0xf0000000) >> 28;
2573 Int_t c=(index & 0x0fffffff) >> 00;
2574 return fgLayers[l].GetWeight(c);
2575}
44347160 2576//------------------------------------------------------------------------
15dd636f 2577void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
e43c066c 2578{
2579 //---------------------------------------------
2580 // register track to the list
628e7bb0 2581 //
b9671574 2582 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2583 //
2584 //
e43c066c 2585 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2586 Int_t index = track->GetClusterIndex(icluster);
2587 Int_t l=(index & 0xf0000000) >> 28;
2588 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2589 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2590 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2591 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2592 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2593 break;
2594 }
2595 }
2596 }
2597}
44347160 2598//------------------------------------------------------------------------
15dd636f 2599void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
e43c066c 2600{
2601 //---------------------------------------------
2602 // unregister track from the list
2603 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2604 Int_t index = track->GetClusterIndex(icluster);
2605 Int_t l=(index & 0xf0000000) >> 28;
2606 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2607 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2608 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2609 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2610 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2611 }
2612 }
2613 }
2614}
44347160 2615//------------------------------------------------------------------------
00a7cc50 2616Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2617{
2618 //-------------------------------------------------------------
2619 //get number of shared clusters
2620 //-------------------------------------------------------------
2621 Float_t shared=0;
2622 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2623 // mean number of clusters
2624 Float_t *ny = GetNy(id), *nz = GetNz(id);
2625
2626
2627 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2628 Int_t index = track->GetClusterIndex(icluster);
2629 Int_t l=(index & 0xf0000000) >> 28;
2630 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2631 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2632 if (ny[l]==0){
2633 printf("problem\n");
2634 }
00a7cc50 2635 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2636 Float_t weight=1;
2637 //
2638 Float_t deltan = 0;
2639 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2640 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2641 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2642 if (l<2 || l>3){
2643 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2644 }
2645 else{
2646 deltan = (cl->GetNz()-nz[l]);
2647 }
2648 if (deltan>2.0) continue; // extended - highly probable shared cluster
2649 weight = 2./TMath::Max(3.+deltan,2.);
2650 //
2651 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2652 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2653 list[l]=index;
00a7cc50 2654 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2655 shared+=weight;
2656 break;
2657 }
2658 }
2659 }
b9671574 2660 track->SetNUsed(shared);
e43c066c 2661 return shared;
2662}
44347160 2663//------------------------------------------------------------------------
15dd636f 2664Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2665{
2666 //
2667 // find first shared track
2668 //
2669 // mean number of clusters
2670 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2671 //
2672 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2673 Int_t sharedtrack=100000;
2674 Int_t tracks[24],trackindex=0;
2675 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2676 //
2677 for (Int_t icluster=0;icluster<6;icluster++){
2678 if (clusterlist[icluster]<0) continue;
2679 Int_t index = clusterlist[icluster];
2680 Int_t l=(index & 0xf0000000) >> 28;
2681 Int_t c=(index & 0x0fffffff) >> 00;
2682 if (ny[l]==0){
2683 printf("problem\n");
2684 }
b9671574 2685 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2686 //if (l>3) continue;
00a7cc50 2687 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2688 //
2689 Float_t deltan = 0;
2690 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2691 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2692 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2693 if (l<2 || l>3){
2694 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2695 }
2696 else{
2697 deltan = (cl->GetNz()-nz[l]);
2698 }
2699 if (deltan>2.0) continue; // extended - highly probable shared cluster
2700 //
2701 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2702 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2703 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2704 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2705 trackindex++;
2706 }
2707 }
2708 }
2709 if (trackindex==0) return -1;
2710 if (trackindex==1){
2711 sharedtrack = tracks[0];
2712 }else{
2713 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2714 else{
2715 //
a5d0fae6 2716 Int_t tracks2[24], cluster[24];
2717 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2718 Int_t index =0;
2719 //
2720 for (Int_t i=0;i<trackindex;i++){
2721 if (tracks[i]<0) continue;
a5d0fae6 2722 tracks2[index] = tracks[i];
e43c066c 2723 cluster[index]++;
2724 for (Int_t j=i+1;j<trackindex;j++){
2725 if (tracks[j]<0) continue;
2726 if (tracks[j]==tracks[i]){
2727 cluster[index]++;
2728 tracks[j]=-1;
2729 }
2730 }
2731 index++;
2732 }
2733 Int_t max=0;
2734 for (Int_t i=0;i<index;i++){
2735 if (cluster[index]>max) {
a5d0fae6 2736 sharedtrack=tracks2[index];
e43c066c 2737 max=cluster[index];
2738 }
2739 }
2740 }
2741 }
2742
2743 if (sharedtrack>=100000) return -1;
2744 //
2745 // make list of overlaps
2746 shared =0;
2747 for (Int_t icluster=0;icluster<6;icluster++){
2748 if (clusterlist[icluster]<0) continue;
2749 Int_t index = clusterlist[icluster];
2750 Int_t l=(index & 0xf0000000) >> 28;
2751 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2752 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2753 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2754 if (l==0 || l==1){
2755 if (cl->GetNy()>2) continue;
2756 if (cl->GetNz()>2) continue;
2757 }
2758 if (l==4 || l==5){
2759 if (cl->GetNy()>3) continue;
2760 if (cl->GetNz()>3) continue;
2761 }
2762 //
2763 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2764 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2765 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2766 overlist[l]=index;
2767 shared++;
2768 }
2769 }
2770 }
2771 return sharedtrack;
2772}
44347160 2773//------------------------------------------------------------------------
15dd636f 2774AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2775 //
2776 // try to find track hypothesys without conflicts
2777 // with minimal chi2;
2778 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2779 Int_t entries1 = arr1->GetEntriesFast();
2780 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2781 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2782 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2783 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2784 //
15dd636f 2785 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2786 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2787 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2788
2789 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2790 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2791 UnRegisterClusterTracks(track,trackID1);
2792 }
2793 //
2794 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2795 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2796 UnRegisterClusterTracks(track,trackID2);
2797 }
2798 Int_t index1=0;
2799 Int_t index2=0;
2800 Float_t maxconflicts=6;
2801 Double_t maxchi2 =1000.;
2802 //
2803 // get weight of hypothesys - using best hypothesy
2804 Double_t w1,w2;
2805
2806 Int_t list1[6],list2[6];
00a7cc50 2807 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2808 RegisterClusterTracks(track10,trackID1);
2809 RegisterClusterTracks(track20,trackID2);
2810 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2811 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2812 UnRegisterClusterTracks(track10,trackID1);
2813 UnRegisterClusterTracks(track20,trackID2);
2814 //
2815 // normalized chi2
2816 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2817 Float_t nerry[6],nerrz[6];
2818 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2819 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2820 for (Int_t i=0;i<6;i++){
2821 if ( (erry1[i]>0) && (erry2[i]>0)) {
2822 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2823 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2824 }else{
2825 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2826 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2827 }
b9671574 2828 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2829 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2830 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2831 ncl1++;
2832 }
b9671574 2833 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2834 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2835 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2836 ncl2++;
2837 }
2838 }
2839 chi21/=ncl1;
2840 chi22/=ncl2;
2841 //
2842 //
b9671574 2843 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2844 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2845 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2846 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2847 //
2848 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2849 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2850 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2851 );
2852 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2853 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2854 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2855 );
2856
2857 Double_t sumw = w1+w2;
2858 w1/=sumw;
2859 w2/=sumw;
2860 if (w1<w2*0.5) {
2861 w1 = (d2+0.5)/(d1+d2+1.);
2862 w2 = (d1+0.5)/(d1+d2+1.);
2863 }
2864 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2865 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2866 //
2867 // get pair of "best" hypothesys
2868 //
2869 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2870 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2871
2872 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2873 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2874 //if (track1->fFakeRatio>0) continue;
2875 RegisterClusterTracks(track1,trackID1);
2876 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2877 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2878
2879 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2880 //if (track2->fFakeRatio>0) continue;
2881 Float_t nskipped=0;
2882 RegisterClusterTracks(track2,trackID2);
e43c066c 2883 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2884 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2885 UnRegisterClusterTracks(track2,trackID2);
2886 //
b9671574 2887 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2888 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2889 if (nskipped>0.5) continue;
2890 //
2891 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2892 if (conflict1+1<cconflict1) continue;
2893 if (conflict2+1<cconflict2) continue;
2894 Float_t conflict=0;
2895 Float_t sumchi2=0;
2896 Float_t sum=0;
2897 for (Int_t i=0;i<6;i++){
2898 //
2899 Float_t c1 =0.; // conflict coeficients
2900 Float_t c2 =0.;
2901 if (clist1[i]&&clist2[i]){
2902 Float_t deltan = 0;
2903 if (i<2 || i>3){
2904 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2905 }
2906 else{
2907 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2908 }
2909 c1 = 2./TMath::Max(3.+deltan,2.);
2910 c2 = 2./TMath::Max(3.+deltan,2.);
2911 }
2912 else{
2913 if (clist1[i]){
2914 Float_t deltan = 0;
2915 if (i<2 || i>3){
2916 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2917 }
2918 else{
2919 deltan = (clist1[i]->GetNz()-nz1[i]);
2920 }
2921 c1 = 2./TMath::Max(3.+deltan,2.);
2922 c2 = 0;
2923 }
2924
2925 if (clist2[i]){
2926 Float_t deltan = 0;
2927 if (i<2 || i>3){
2928 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2929 }
2930 else{
2931 deltan = (clist2[i]->GetNz()-nz2[i]);
2932 }
2933 c2 = 2./TMath::Max(3.+deltan,2.);
2934 c1 = 0;
2935 }
2936 }
2937 //
a5d0fae6 2938 chi21=0;chi22=0;
b9671574 2939 if (TMath::Abs(track1->GetDy(i))>0.) {
2940 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2941 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2942 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2943 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2944 }else{
b9671574 2945 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2946 }
2947 //
b9671574 2948 if (TMath::Abs(track2->GetDy(i))>0.) {
2949 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2950 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2951 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2952 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2953 }
2954 else{
b9671574 2955 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 2956 }
2957 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
2958 if (chi21>0) sum+=w1;
2959 if (chi22>0) sum+=w2;
2960 conflict+=(c1+c2);
2961 }
b9671574 2962 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
2963 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 2964 Double_t normchi2 = 2*conflict+sumchi2/sum;
2965 if ( normchi2 <maxchi2 ){
2966 index1 = itrack1;
2967 index2 = itrack2;
2968 maxconflicts = conflict;
2969 maxchi2 = normchi2;
2970 }
2971 }
2972 UnRegisterClusterTracks(track1,trackID1);
2973 }
2974 //
2975 // if (maxconflicts<4 && maxchi2<th0){
2976 if (maxchi2<th0*2.){
b9671574 2977 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 2978 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 2979 track1->SetChi2MIP(5,maxconflicts);
2980 track1->SetChi2MIP(6,maxchi2);
2981 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 2982 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 2983 track1->SetChi2MIP(8,index1);
e43c066c 2984 fBestTrackIndex[trackID1] =index1;
2985 UpdateESDtrack(track1, AliESDtrack::kITSin);
2986 }
b9671574 2987 else if (track10->GetChi2MIP(0)<th1){
2988 track10->SetChi2MIP(5,maxconflicts);
2989 track10->SetChi2MIP(6,maxchi2);
e43c066c 2990 // track10->UpdateESDtrack(AliESDtrack::kITSin);
2991 UpdateESDtrack(track10,AliESDtrack::kITSin);
2992 }
2993
2994 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2995 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2996 UnRegisterClusterTracks(track,trackID1);
2997 }
2998 //
2999 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3000 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3001 UnRegisterClusterTracks(track,trackID2);
3002 }
3003
44347160 3004 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3005 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3006 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3007 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3008 RegisterClusterTracks(track10,trackID1);
3009 }
44347160 3010 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3011 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3012 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3013 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3014 RegisterClusterTracks(track20,trackID2);
3015 }
3016 return track10;
3017
3018}
44347160 3019