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[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
bf6adc12 31#include <TTreeStream.h>
afd25725 32#include <TDatabasePDG.h>
9a5326b1 33#include <TString.h>
e50912db 34#include <TRandom.h>
bf6adc12 35
23197852 36
4187a601 37#include "AliLog.h"
af885e0f 38#include "AliESDEvent.h"
aad72f45 39#include "AliESDtrack.h"
9a5326b1 40#include "AliESDVertex.h"
6c94f330 41#include "AliV0.h"
bf6adc12 42#include "AliHelix.h"
00a7cc50 43#include "AliITSRecPoint.h"
e341247d 44#include "AliITSgeomTGeo.h"
44347160 45#include "AliITSReconstructor.h"
df29e9a4 46#include "AliTrackPointArray.h"
47#include "AliAlignObj.h"
572f41f9 48#include "AliITSClusterParam.h"
ae00569a 49#include "AliCDBManager.h"
50#include "AliCDBEntry.h"
23197852 51#include "AliITSsegmentation.h"
52#include "AliITSCalibration.h"
ae00569a 53#include "AliITSCalibrationSPD.h"
54#include "AliITSCalibrationSDD.h"
55#include "AliITSCalibrationSSD.h"
7167ae53 56#include "AliITSPlaneEff.h"
57#include "AliITSPlaneEffSPD.h"
58#include "AliITSPlaneEffSDD.h"
59#include "AliITSPlaneEffSSD.h"
ae00569a 60#include "AliITStrackerMI.h"
e43c066c 61
62ClassImp(AliITStrackerMI)
e43c066c 63
e50912db 64AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 65
8221b41b 66AliITStrackerMI::AliITStrackerMI():AliTracker(),
67fI(0),
68fBestTrack(),
69fTrackToFollow(),
70fTrackHypothesys(),
71fBestHypothesys(),
72fOriginal(),
73fCurrentEsdTrack(),
74fPass(0),
75fAfterV0(kFALSE),
76fLastLayerToTrackTo(0),
afd25725 77fCoefficients(0),
8221b41b 78fEsd(0),
e50912db 79fTrackingPhase("Default"),
6518a6c5 80fUseTGeo(3),
e50912db 81fNtracks(0),
82fxOverX0Pipe(-1.),
83fxTimesRhoPipe(-1.),
84fxOverX0PipeTrks(0),
85fxTimesRhoPipeTrks(0),
86fxOverX0ShieldTrks(0),
87fxTimesRhoShieldTrks(0),
88fxOverX0LayerTrks(0),
89fxTimesRhoLayerTrks(0),
4a66240a 90fDebugStreamer(0),
23197852 91fITSChannelStatus(0),
92fDetTypeRec(0),
ae00569a 93fPlaneEff(0) {
8221b41b 94 //Default constructor
e50912db 95 Int_t i;
96 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
97 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
98 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 99}
44347160 100//------------------------------------------------------------------------
1f3e997f 101AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 102fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 103fBestTrack(),
104fTrackToFollow(),
105fTrackHypothesys(),
106fBestHypothesys(),
107fOriginal(),
108fCurrentEsdTrack(),
109fPass(0),
110fAfterV0(kFALSE),
e50912db 111fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 112fCoefficients(0),
8221b41b 113fEsd(0),
e50912db 114fTrackingPhase("Default"),
6518a6c5 115fUseTGeo(3),
e50912db 116fNtracks(0),
117fxOverX0Pipe(-1.),
118fxTimesRhoPipe(-1.),
119fxOverX0PipeTrks(0),
120fxTimesRhoPipeTrks(0),
121fxOverX0ShieldTrks(0),
122fxTimesRhoShieldTrks(0),
123fxOverX0LayerTrks(0),
124fxTimesRhoLayerTrks(0),
4a66240a 125fDebugStreamer(0),
23197852 126fITSChannelStatus(0),
127fDetTypeRec(0),
ae00569a 128fPlaneEff(0) {
e43c066c 129 //--------------------------------------------------------------------
130 //This is the AliITStrackerMI constructor
131 //--------------------------------------------------------------------
e341247d 132 if (geom) {
133 AliWarning("\"geom\" is actually a dummy argument !");
134 }
135
afd25725 136 fCoefficients = 0;
628e7bb0 137 fAfterV0 = kFALSE;
e341247d 138
e50912db 139 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 140 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
141 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
142
143 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
144 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 145 Double_t poff=TMath::ATan2(y,x);
146 Double_t zoff=z;
e341247d 147 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 148
e341247d 149 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 150 r += TMath::Sqrt(x*x + y*y);
e341247d 151 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 152 r += TMath::Sqrt(x*x + y*y);
e341247d 153 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 154 r += TMath::Sqrt(x*x + y*y);
155 r*=0.25;
156
157 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
158
159 for (Int_t j=1; j<nlad+1; j++) {
160 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 161 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 162 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
163 m.Multiply(tm);
a5d0fae6 164 Double_t txyz[3]={0.};
165 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 166 m.LocalToMaster(txyz,xyz);
a5d0fae6 167 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 168 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 169
170 if (phi<0) phi+=TMath::TwoPi();
171 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
172
e43c066c 173 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
174 new(&det) AliITSdetector(r,phi);
1c97ce2f 175 // compute the real radius (with misalignment)
176 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
177 mmisal.Multiply(tm);
178 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
179 mmisal.LocalToMaster(txyz,xyz);
180 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
181 det.SetRmisal(rmisal);
182
23197852 183 } // end loop on detectors
184 } // end loop on ladders
185 } // end loop on layers
e43c066c 186
e43c066c 187
e50912db 188 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 189
190 fPass=0;
191 fConstraint[0]=1; fConstraint[1]=0;
192
afd25725 193 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
194 AliITSReconstructor::GetRecoParam()->GetYVdef(),
195 AliITSReconstructor::GetRecoParam()->GetZVdef()};
196 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
197 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
198 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
199 SetVertex(xyzVtx,ersVtx);
e43c066c 200
e50912db 201 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
202 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 203 for (Int_t i=0;i<100000;i++){
204 fBestTrackIndex[i]=0;
205 }
afd25725 206
207 // store positions of centre of SPD modules (in z)
208 Double_t tr[3];
209 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
210 fSPDdetzcentre[0] = tr[2];
211 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
212 fSPDdetzcentre[1] = tr[2];
213 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
214 fSPDdetzcentre[2] = tr[2];
215 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
216 fSPDdetzcentre[3] = tr[2];
217
afd25725 218 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 219 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
220 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
221 fUseTGeo = 3;
222 }
e50912db 223
224 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
225 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
226
81e97e0d 227 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
228
7167ae53 229 // only for plane efficiency evaluation
230 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff()) {
0ed58a47 231 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
232 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane))
233 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
234 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
235 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
236 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 237 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 238 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
239 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 240 }
628e7bb0 241}
44347160 242//------------------------------------------------------------------------
8221b41b 243AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
244fI(tracker.fI),
245fBestTrack(tracker.fBestTrack),
246fTrackToFollow(tracker.fTrackToFollow),
247fTrackHypothesys(tracker.fTrackHypothesys),
248fBestHypothesys(tracker.fBestHypothesys),
249fOriginal(tracker.fOriginal),
250fCurrentEsdTrack(tracker.fCurrentEsdTrack),
251fPass(tracker.fPass),
252fAfterV0(tracker.fAfterV0),
253fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 254fCoefficients(tracker.fCoefficients),
8221b41b 255fEsd(tracker.fEsd),
e50912db 256fTrackingPhase(tracker.fTrackingPhase),
afd25725 257fUseTGeo(tracker.fUseTGeo),
e50912db 258fNtracks(tracker.fNtracks),
259fxOverX0Pipe(tracker.fxOverX0Pipe),
260fxTimesRhoPipe(tracker.fxTimesRhoPipe),
261fxOverX0PipeTrks(0),
262fxTimesRhoPipeTrks(0),
263fxOverX0ShieldTrks(0),
264fxTimesRhoShieldTrks(0),
265fxOverX0LayerTrks(0),
266fxTimesRhoLayerTrks(0),
4a66240a 267fDebugStreamer(tracker.fDebugStreamer),
23197852 268fITSChannelStatus(tracker.fITSChannelStatus),
269fDetTypeRec(tracker.fDetTypeRec),
ae00569a 270fPlaneEff(tracker.fPlaneEff) {
8221b41b 271 //Copy constructor
e50912db 272 Int_t i;
273 for(i=0;i<4;i++) {
274 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
275 }
276 for(i=0;i<6;i++) {
277 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
278 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
279 }
280 for(i=0;i<2;i++) {
281 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
282 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
283 }
8221b41b 284}
44347160 285//------------------------------------------------------------------------
8221b41b 286AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
287 //Assignment operator
288 this->~AliITStrackerMI();
289 new(this) AliITStrackerMI(tracker);
290 return *this;
291}
44347160 292//------------------------------------------------------------------------
628e7bb0 293AliITStrackerMI::~AliITStrackerMI()
294{
295 //
296 //destructor
297 //
e50912db 298 if (fCoefficients) delete [] fCoefficients;
299 DeleteTrksMaterialLUT();
81e97e0d 300 if (fDebugStreamer) {
301 //fDebugStreamer->Close();
302 delete fDebugStreamer;
303 }
23197852 304 if(fITSChannelStatus) delete fITSChannelStatus;
305 if(fPlaneEff) delete fPlaneEff;
e43c066c 306}
44347160 307//------------------------------------------------------------------------
e43c066c 308void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
309 //--------------------------------------------------------------------
310 //This function set masks of the layers which must be not skipped
311 //--------------------------------------------------------------------
e50912db 312 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
e43c066c 313}
44347160 314//------------------------------------------------------------------------
23197852 315void AliITStrackerMI::ReadBadFromDetTypeRec() {
316 //--------------------------------------------------------------------
317 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
318 //i.e. from OCDB
319 //--------------------------------------------------------------------
320
321 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
322
4187a601 323 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 324
325 if(!fDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
326
327 // ITS channels map
328 if(fITSChannelStatus) delete fITSChannelStatus;
4187a601 329 fITSChannelStatus = new AliITSChannelStatus(fDetTypeRec);
23197852 330
331 // ITS detectors and chips
332 Int_t i=0,j=0,k=0,ndet=0;
333 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 334 Int_t nBadDetsPerLayer=0;
23197852 335 ndet=AliITSgeomTGeo::GetNDetectors(i);
336 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
337 for (k=1; k<ndet+1; k++) {
338 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
339 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fDetTypeRec);
4187a601 340 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 341 } // end loop on detectors
342 } // end loop on ladders
4187a601 343 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 344 } // end loop on layers
345
346 return;
347}
348//------------------------------------------------------------------------
e43c066c 349Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
350 //--------------------------------------------------------------------
351 //This function loads ITS clusters
352 //--------------------------------------------------------------------
00a7cc50 353 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 354 if (!branch) {
355 Error("LoadClusters"," can't get the branch !\n");
356 return 1;
357 }
358
23197852 359 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 360 branch->SetAddress(&clusters);
361
23197852 362 Int_t i=0,j=0,ndet=0;
e43c066c 363 Int_t detector=0;
23197852 364 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
365 ndet=fgLayers[i].GetNdetectors();
e43c066c 366 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
367 for (; j<jmax; j++) {
368 if (!cTree->GetEvent(j)) continue;
369 Int_t ncl=clusters->GetEntriesFast();
370 SignDeltas(clusters,GetZ());
1f3e997f 371
e43c066c 372 while (ncl--) {
00a7cc50 373 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 374 detector=c->GetDetectorIndex();
a504d56f 375
75fb37cc 376 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 377
00a7cc50 378 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 379 }
380 clusters->Delete();
afd25725 381 // add dead zone "virtual" cluster in SPD, if there is a cluster within
382 // zwindow cm from the dead zone
383 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 384 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 385 Int_t lab[4] = {0,0,0,detector};
386 Int_t info[3] = {0,0,i};
6518a6c5 387 Float_t q = 0.; // this identifies virtual clusters
afd25725 388 Float_t hit[5] = {xdead,
389 0.,
390 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
391 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
392 q};
393 Bool_t local = kTRUE;
394 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 395 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 396 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
397 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 398 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 399 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
400 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 401 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 402 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
403 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 404 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 405 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
406 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 407 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 408 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
409 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 410 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 411 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
412 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 413 }
6518a6c5 414 } // "virtual" clusters in SPD
e43c066c 415
416 }
417 //
418 fgLayers[i].ResetRoad(); //road defined by the cluster density
419 fgLayers[i].SortClusters();
420 }
421
23197852 422 dummy.Clear();
423
e43c066c 424 return 0;
425}
44347160 426//------------------------------------------------------------------------
e43c066c 427void AliITStrackerMI::UnloadClusters() {
428 //--------------------------------------------------------------------
429 //This function unloads ITS clusters
430 //--------------------------------------------------------------------
e50912db 431 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 432}
44347160 433//------------------------------------------------------------------------
23197852 434void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
435 //--------------------------------------------------------------------
436 // Publishes all pointers to clusters known to the tracker into the
437 // passed object array.
438 // The ownership is not transfered - the caller is not expected to delete
439 // the clusters.
440 //--------------------------------------------------------------------
441
442 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
443 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
444 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
445 array->AddLast(cl);
446 }
447 }
448
449 return;
450}
451//------------------------------------------------------------------------
afd25725 452static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 453 //--------------------------------------------------------------------
454 // Correction for the material between the TPC and the ITS
e43c066c 455 //--------------------------------------------------------------------
e50912db 456 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
457 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
458 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
459 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
460 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
463 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 464 } else {
afd25725 465 Error("CorrectForTPCtoITSDeadZoneMaterial","Track is already in the dead zone !");
e50912db 466 return 0;
e43c066c 467 }
468
e50912db 469 return 1;
e43c066c 470}
44347160 471//------------------------------------------------------------------------
af885e0f 472Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 473 //--------------------------------------------------------------------
474 // This functions reconstructs ITS tracks
475 // The clusters must be already loaded !
476 //--------------------------------------------------------------------
fddf8459 477
478
e50912db 479 fTrackingPhase="Clusters2Tracks";
480
e43c066c 481 TObjArray itsTracks(15000);
628e7bb0 482 fOriginal.Clear();
81e97e0d 483 fEsd = event; // store pointer to the esd
afd25725 484
9a5326b1 485 // temporary (for cosmics)
486 if(event->GetVertex()) {
487 TString title = event->GetVertex()->GetTitle();
488 if(title.Contains("cosmics")) {
489 Double_t xyz[3]={GetX(),GetY(),GetZ()};
490 Double_t exyz[3]={0.1,0.1,0.1};
491 SetVertex(xyz,exyz);
492 }
493 }
494 // temporary
afd25725 495
e43c066c 496 {/* Read ESD tracks */
afd25725 497 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 498 Int_t nentr=event->GetNumberOfTracks();
499 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
500 while (nentr--) {
501 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 502 // ---- for debugging:
503 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
e43c066c 504
505 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
506 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
507 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 508 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 509 AliITStrackMI *t=0;
e43c066c 510 try {
15dd636f 511 t=new AliITStrackMI(*esd);
e43c066c 512 } catch (const Char_t *msg) {
628e7bb0 513 //Warning("Clusters2Tracks",msg);
e43c066c 514 delete t;
515 continue;
516 }
b9671574 517 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
518 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 519
520
afd25725 521 // look at the ESD mass hypothesys !
522 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 523 // write expected q
b9671574 524 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 525
afd25725 526 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 527 //track - can be V0 according to TPC
afd25725 528 } else {
529 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 530 delete t;
531 continue;
e50912db 532 }
afd25725 533 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 534 delete t;
535 continue;
536 }
6c23ffed 537 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 538 delete t;
539 continue;
540 }
e50912db 541 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 542 delete t;
543 continue;
544 }
e43c066c 545 }
b9671574 546 t->SetReconstructed(kFALSE);
e43c066c 547 itsTracks.AddLast(t);
628e7bb0 548 fOriginal.AddLast(t);
e43c066c 549 }
550 } /* End Read ESD tracks */
551
552 itsTracks.Sort();
628e7bb0 553 fOriginal.Sort();
e43c066c 554 Int_t nentr=itsTracks.GetEntriesFast();
555 fTrackHypothesys.Expand(nentr);
81e97e0d 556 fBestHypothesys.Expand(nentr);
afd25725 557 MakeCoefficients(nentr);
513ab112 558 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 559 Int_t ntrk=0;
afd25725 560 // THE TWO TRACKING PASSES
e43c066c 561 for (fPass=0; fPass<2; fPass++) {
562 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 563 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 564 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 565 if (t==0) continue; //this track has been already tracked
1c97ce2f 566 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 567 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 568 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 569 if (fConstraint[fPass]) {
570 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
571 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
572 }
e43c066c 573
574 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 575 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 576 fI = 6;
577 ResetTrackToFollow(*t);
578 ResetBestTrack();
6518a6c5 579
e50912db 580 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 581
e43c066c 582
583 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
584 //
ae00569a 585 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 586 if (!besttrack) continue;
587 besttrack->SetLabel(tpcLabel);
588 // besttrack->CookdEdx();
589 CookdEdx(besttrack);
b9671574 590 besttrack->SetFakeRatio(1.);
e43c066c 591 CookLabel(besttrack,0.); //For comparison only
e43c066c 592 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 593
628e7bb0 594 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
595
b9671574 596 t->SetReconstructed(kTRUE);
1c97ce2f 597 ntrk++;
4187a601 598 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 599 }
600 GetBestHypothesysMIP(itsTracks);
afd25725 601 } // end loop on the two tracking passes
e43c066c 602
afd25725 603 if(event->GetNumberOfV0s()>0) UpdateTPCV0(event);
604 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) FindV02(event);
628e7bb0 605 fAfterV0 = kTRUE;
628e7bb0 606 //
e43c066c 607 itsTracks.Delete();
608 //
609 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 610 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 611 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
612 if (array) array->Delete();
613 delete fTrackHypothesys.RemoveAt(ientry);
614 }
615
616 fTrackHypothesys.Delete();
81e97e0d 617 fBestHypothesys.Delete();
628e7bb0 618 fOriginal.Clear();
afd25725 619 delete [] fCoefficients;
620 fCoefficients=0;
e50912db 621 DeleteTrksMaterialLUT();
622
e43c066c 623 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 624
625 fTrackingPhase="Default";
628e7bb0 626
e43c066c 627 return 0;
628}
44347160 629//------------------------------------------------------------------------
af885e0f 630Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 631 //--------------------------------------------------------------------
632 // This functions propagates reconstructed ITS tracks back
633 // The clusters must be loaded !
634 //--------------------------------------------------------------------
e50912db 635 fTrackingPhase="PropagateBack";
e43c066c 636 Int_t nentr=event->GetNumberOfTracks();
637 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
638
639 Int_t ntrk=0;
640 for (Int_t i=0; i<nentr; i++) {
641 AliESDtrack *esd=event->GetTrack(i);
642
643 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
644 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
645
15dd636f 646 AliITStrackMI *t=0;
e43c066c 647 try {
15dd636f 648 t=new AliITStrackMI(*esd);
e43c066c 649 } catch (const Char_t *msg) {
628e7bb0 650 //Warning("PropagateBack",msg);
e43c066c 651 delete t;
652 continue;
653 }
b9671574 654 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 655
656 ResetTrackToFollow(*t);
657
9a5326b1 658 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 659 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 660 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
661 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
662 fTrackToFollow.StartTimeIntegral();
663 // from vertex to outside pipe
664 CorrectForPipeMaterial(&fTrackToFollow,"outward");
e43c066c 665 }
666
6c94f330 667 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 668 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
669 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 670 delete t;
671 continue;
672 }
673 fTrackToFollow.SetLabel(t->GetLabel());
674 //fTrackToFollow.CookdEdx();
675 CookLabel(&fTrackToFollow,0.); //For comparison only
676 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
677 //UseClusters(&fTrackToFollow);
678 ntrk++;
679 }
680 delete t;
681 }
682
683 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
684
e50912db 685 fTrackingPhase="Default";
686
e43c066c 687 return 0;
688}
44347160 689//------------------------------------------------------------------------
af885e0f 690Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 691 //--------------------------------------------------------------------
692 // This functions refits ITS tracks using the
693 // "inward propagated" TPC tracks
694 // The clusters must be loaded !
695 //--------------------------------------------------------------------
e50912db 696 fTrackingPhase="RefitInward";
afd25725 697 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) RefitV02(event);
e43c066c 698 Int_t nentr=event->GetNumberOfTracks();
699 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
700
701 Int_t ntrk=0;
702 for (Int_t i=0; i<nentr; i++) {
703 AliESDtrack *esd=event->GetTrack(i);
704
705 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
706 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
707 if (esd->GetStatus()&AliESDtrack::kTPCout)
708 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
709
15dd636f 710 AliITStrackMI *t=0;
e43c066c 711 try {
15dd636f 712 t=new AliITStrackMI(*esd);
e43c066c 713 } catch (const Char_t *msg) {
628e7bb0 714 //Warning("RefitInward",msg);
e43c066c 715 delete t;
716 continue;
717 }
b9671574 718 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 719 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 720 delete t;
721 continue;
722 }
723
724 ResetTrackToFollow(*t);
725 fTrackToFollow.ResetClusters();
726
727 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 728 fTrackToFollow.ResetCovariance(10.);
e43c066c 729
730 //Refitting...
7167ae53 731 Bool_t pe=AliITSReconstructor::GetRecoParam()->GetComputePlaneEff();
4187a601 732 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 733 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 734 AliDebug(2," refit OK");
e43c066c 735 fTrackToFollow.SetLabel(t->GetLabel());
736 // fTrackToFollow.CookdEdx();
737 CookdEdx(&fTrackToFollow);
738
739 CookLabel(&fTrackToFollow,0.0); //For comparison only
740
9a5326b1 741 //The beam pipe
e50912db 742 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 743 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 744 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 745 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
746 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
9a5326b1 747 Float_t r[3]={0.,0.,0.};
748 Double_t maxD=3.;
749 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
750 ntrk++;
e43c066c 751 }
752 }
753 delete t;
754 }
755
756 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
757
e50912db 758 fTrackingPhase="Default";
759
e43c066c 760 return 0;
761}
44347160 762//------------------------------------------------------------------------
e43c066c 763AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
764 //--------------------------------------------------------------------
765 // Return pointer to a given cluster
766 //--------------------------------------------------------------------
767 Int_t l=(index & 0xf0000000) >> 28;
768 Int_t c=(index & 0x0fffffff) >> 00;
769 return fgLayers[l].GetCluster(c);
770}
9a5326b1 771//------------------------------------------------------------------------
df29e9a4 772Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 773 //--------------------------------------------------------------------
df29e9a4 774 // Get track space point with index i
9a5326b1 775 //--------------------------------------------------------------------
60066577 776
78b03929 777 Int_t l=(index & 0xf0000000) >> 28;
778 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 779 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 780 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 781
60066577 782 Float_t xyz[3];
783 Float_t cov[6];
784 cl->GetGlobalXYZ(xyz);
785 cl->GetGlobalCov(cov);
786 p.SetXYZ(xyz, cov);
be77c8c9 787 p.SetCharge(cl->GetQ());
ebbcf1ea 788 p.SetDriftTime(cl->GetDriftTime());
ae079791 789 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 790 switch (l) {
791 case 0:
ae079791 792 iLayer = AliGeomManager::kSPD1;
df29e9a4 793 break;
794 case 1:
ae079791 795 iLayer = AliGeomManager::kSPD2;
df29e9a4 796 break;
797 case 2:
ae079791 798 iLayer = AliGeomManager::kSDD1;
df29e9a4 799 break;
800 case 3:
ae079791 801 iLayer = AliGeomManager::kSDD2;
9a5326b1 802 break;
803 case 4:
804 iLayer = AliGeomManager::kSSD1;
805 break;
806 case 5:
807 iLayer = AliGeomManager::kSSD2;
808 break;
809 default:
810 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
811 break;
812 };
813 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
814 p.SetVolumeID((UShort_t)volid);
815 return kTRUE;
816}
817//------------------------------------------------------------------------
818Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
819 AliTrackPoint& p, const AliESDtrack *t) {
820 //--------------------------------------------------------------------
821 // Get track space point with index i
822 // (assign error estimated during the tracking)
823 //--------------------------------------------------------------------
824
825 Int_t l=(index & 0xf0000000) >> 28;
826 Int_t c=(index & 0x0fffffff) >> 00;
827 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
828 Int_t idet = cl->GetDetectorIndex();
4187a601 829
9a5326b1 830 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
831
832 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
833 Float_t detxy[2];
834 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
835 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
836 Double_t alpha = t->GetAlpha();
837 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
838 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
839 phi += alpha-det.GetPhi();
840 Float_t tgphi = TMath::Tan(phi);
841
842 Float_t tgl = t->GetTgl(); // tgl about const along track
843 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
844
845 Float_t errlocalx,errlocalz;
8c139cf3 846 Bool_t addMisalErr=kFALSE;
847 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz,addMisalErr);
9a5326b1 848
849 Float_t xyz[3];
850 Float_t cov[6];
851 cl->GetGlobalXYZ(xyz);
852 // cl->GetGlobalCov(cov);
853 Float_t pos[3] = {0.,0.,0.};
854 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
855 tmpcl.GetGlobalCov(cov);
856
857 p.SetXYZ(xyz, cov);
be77c8c9 858 p.SetCharge(cl->GetQ());
ebbcf1ea 859 p.SetDriftTime(cl->GetDriftTime());
9a5326b1 860
861 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
862 switch (l) {
863 case 0:
864 iLayer = AliGeomManager::kSPD1;
865 break;
866 case 1:
867 iLayer = AliGeomManager::kSPD2;
868 break;
869 case 2:
870 iLayer = AliGeomManager::kSDD1;
871 break;
872 case 3:
873 iLayer = AliGeomManager::kSDD2;
df29e9a4 874 break;
875 case 4:
ae079791 876 iLayer = AliGeomManager::kSSD1;
df29e9a4 877 break;
878 case 5:
ae079791 879 iLayer = AliGeomManager::kSSD2;
df29e9a4 880 break;
881 default:
882 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
883 break;
884 };
ae079791 885 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 886
df29e9a4 887 p.SetVolumeID((UShort_t)volid);
888 return kTRUE;
889}
44347160 890//------------------------------------------------------------------------
81e97e0d 891void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 892{
893 //--------------------------------------------------------------------
894 // Follow prolongation tree
895 //--------------------------------------------------------------------
81e97e0d 896 //
afd25725 897 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
898 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
899
2755f080 900
b9671574 901 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 902 if (esd->GetV0Index(0)>0) {
81e97e0d 903 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 904 // mapping of ESD track is different as ITS track in Containers
81e97e0d 905 // Need something more stable
44347160 906 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 907 for (Int_t i=0;i<3;i++){
908 Int_t index = esd->GetV0Index(i);
909 if (index==0) break;
d6a49f20 910 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 911 if (vertex->GetStatus()<0) continue; // rejected V0
912 //
afd25725 913 if (esd->GetSign()>0) {
914 vertex->SetIndex(0,esdindex);
915 } else {
916 vertex->SetIndex(1,esdindex);
917 }
81e97e0d 918 }
919 }
920 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
921 if (!bestarray){
922 bestarray = new TObjArray(5);
923 fBestHypothesys.AddAt(bestarray,esdindex);
924 }
e43c066c 925
81e97e0d 926 //
e43c066c 927 //setup tree of the prolongations
928 //
15dd636f 929 static AliITStrackMI tracks[7][100];
930 AliITStrackMI *currenttrack;
931 static AliITStrackMI currenttrack1;
932 static AliITStrackMI currenttrack2;
933 static AliITStrackMI backuptrack;
e43c066c 934 Int_t ntracks[7];
935 Int_t nindexes[7][100];
936 Float_t normalizedchi2[100];
937 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 938 otrack->SetNSkipped(0);
15dd636f 939 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 940 ntracks[6]=1;
81e97e0d 941 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 942 Int_t modstatus = 1; // found
943 Float_t xloc,zloc;
e43c066c 944 //
945 //
946 // follow prolongations
e50912db 947 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 948 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 949 fI = ilayer;
e43c066c 950 //
2755f080 951 AliITSlayer &layer=fgLayers[ilayer];
952 Double_t r = layer.GetR();
e43c066c 953 ntracks[ilayer]=0;
954 //
955 //
2755f080 956 Int_t nskipped=0;
e43c066c 957 Float_t nused =0;
e50912db 958 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 959 //set current track
960 if (ntracks[ilayer]>=100) break;
b9671574 961 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
962 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 963 if (ntracks[ilayer]>15+ilayer){
b9671574 964 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
965 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 966 }
967
15dd636f 968 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 969
afd25725 970 // material between SSD and SDD, SDD and SPD
e50912db 971 if (ilayer==3)
972 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
973 if (ilayer==1)
974 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 975
2755f080 976 // detector number
8602c008 977 Double_t phi,z;
978 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 979 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 980
981 Double_t trackGlobXYZ1[3];
d1181f10 982 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 983
2755f080 984 // Get the budget to the primary vertex for the current track being prolonged
985 Double_t budgetToPrimVertex = GetEffectiveThickness();
986
987 // check if we allow a prolongation without point
6518a6c5 988 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 989 if (skip) {
990 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 991 // propagate to the layer radius
d1181f10 992 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
993 if(!vtrack->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) continue;
2755f080 994 // apply correction for material of the current layer
995 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
996 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
997 vtrack->SetClIndex(ilayer,0);
ae00569a 998 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 999 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1000 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1001 }
2755f080 1002 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1003 ntracks[ilayer]++;
6518a6c5 1004 continue;
2755f080 1005 }
1006
1007 // track outside layer acceptance in z
1008 if (idet<0) continue;
1009
1010 //propagate to the intersection with the detector plane
1011 const AliITSdetector &det=layer.GetDetector(idet);
1012 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1013 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1014 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1015 currenttrack1.SetDetectorIndex(idet);
1016 currenttrack2.SetDetectorIndex(idet);
d1181f10 1017 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1018
afd25725 1019 //***************
1c97ce2f 1020 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1021 //
2755f080 1022 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1023 Double_t zmin,zmax,ymin,ymax;
1024 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1025
afd25725 1026 // select clusters in road
e43c066c 1027 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1028 //********************
44347160 1029
afd25725 1030 // Define criteria for track-cluster association
44347160 1031 Double_t msz = currenttrack1.GetSigmaZ2() +
1032 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1033 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1034 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1035 Double_t msy = currenttrack1.GetSigmaY2() +
1036 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1037 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1038 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1039 if (constrain) {
1040 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1041 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1042 } else {
1043 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1044 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1045 }
1046 msz = 1./msz; // 1/RoadZ^2
1047 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1048
e43c066c 1049 //
e43c066c 1050 //
afd25725 1051 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1052 //
afd25725 1053 const AliITSRecPoint *cl=0;
1054 Int_t clidx=-1;
1055 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1056 Bool_t deadzoneSPD=kFALSE;
e43c066c 1057 currenttrack = &currenttrack1;
6518a6c5 1058
ae00569a 1059 // check if the road contains a dead zone
23197852 1060 Bool_t noClusters = kFALSE;
1061 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1062 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1063 Double_t dz=0.5*(zmax-zmin);
1064 Double_t dy=0.5*(ymax-ymin);
1065 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1066 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1067 // create a prolongation without clusters (check also if there are no clusters in the road)
1068 if (dead ||
23197852 1069 (noClusters &&
ae00569a 1070 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1071 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1072 updatetrack->SetClIndex(ilayer,0);
ae00569a 1073 if (dead==0) {
1074 modstatus = 5; // no cls in road
1075 } else if (dead==1) {
1076 modstatus = 7; // holes in z in SPD
23197852 1077 } else if (dead==2 || dead==3) {
ae00569a 1078 modstatus = 2; // dead from OCDB
1079 }
1080 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1081 // apply correction for material of the current layer
1082 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1083 if (constrain) { // apply vertex constrain
1084 updatetrack->SetConstrain(constrain);
1085 Bool_t isPrim = kTRUE;
1086 if (ilayer<4) { // check that it's close to the vertex
1087 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1088 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1089 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1090 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1091 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1092 }
1093 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1094 }
ae00569a 1095 if (dead) {
1096 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1097 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1098 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1099 deadzoneSPD=kTRUE;
1100 }
6518a6c5 1101 }
1102 ntracks[ilayer]++;
1103 }
1104
ae00569a 1105 clidx=-1;
6518a6c5 1106 // loop over clusters in the road
afd25725 1107 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1108 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1109 Bool_t changedet =kFALSE;
6518a6c5 1110 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1111 Int_t idetc=cl->GetDetectorIndex();
afd25725 1112
a5d0fae6 1113 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1114 // take into account misalignment (bring track to real detector plane)
1115 Double_t xTrOrig = currenttrack->GetX();
d1181f10 1116 if (!currenttrack->PropagateTo(xTrOrig+cl->GetX(),0.,0.)) continue;
afd25725 1117 // a first cut on track-cluster distance
1118 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1119 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1120 { // cluster not associated to track
4187a601 1121 AliDebug(2,"not associated");
1c97ce2f 1122 continue;
1123 }
1124 // bring track back to ideal detector plane
d1181f10 1125 if (!currenttrack->PropagateTo(xTrOrig,0.,0.)) continue;
afd25725 1126 } else { // have to move track to cluster's detector
a5d0fae6 1127 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1128 // a first cut on track-cluster distance
a5d0fae6 1129 Double_t y;
1c97ce2f 1130 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1131 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1132 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1133 continue; // cluster not associated to track
e43c066c 1134 //
15dd636f 1135 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1136 changedet = kTRUE;
e43c066c 1137 currenttrack =&currenttrack2;
a5d0fae6 1138 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1139 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1140 changedet = kFALSE;
e43c066c 1141 continue;
1142 }
a5d0fae6 1143 currenttrack->SetDetectorIndex(idetc);
e50912db 1144 // Get again the budget to the primary vertex
1145 // for the current track being prolonged, if had to change detector
1146 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1147 }
1148
afd25725 1149 // calculate track-clusters chi2
1150 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1151 // chi2 cut
4187a601 1152 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1153 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1154 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1155 if (ntracks[ilayer]>=100) continue;
15dd636f 1156 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
b9671574 1157 updatetrack->SetClIndex(ilayer,0);
afd25725 1158 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1159
6518a6c5 1160 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1161 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1162 AliDebug(2,"update failed");
1c97ce2f 1163 continue;
1164 }
afd25725 1165 updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
ae00569a 1166 modstatus = 1; // found
6518a6c5 1167 } else { // virtual cluster in dead zone
b9671574 1168 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
6518a6c5 1169 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1170 modstatus = 7; // holes in z in SPD
1171 }
1172
1173 if (changedet) {
1174 Float_t xlocnewdet,zlocnewdet;
d1181f10 1175 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1176 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1177 }
ae00569a 1178 } else {
1179 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1180 }
afd25725 1181 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1182
1183 // apply correction for material of the current layer
e50912db 1184 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1185
afd25725 1186 if (constrain) { // apply vertex constrain
b9671574 1187 updatetrack->SetConstrain(constrain);
e43c066c 1188 Bool_t isPrim = kTRUE;
afd25725 1189 if (ilayer<4) { // check that it's close to the vertex
b9671574 1190 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1191 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1192 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1193 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1194 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1195 }
afd25725 1196 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1197 } //apply vertex constrain
1198 ntracks[ilayer]++;
afd25725 1199 } // create new hypothesis
4187a601 1200 else {
1201 AliDebug(2,"chi2 too large");
1202 }
1203
2755f080 1204 } // loop over possible prolongations
1205
1206 // allow one prolongation without clusters
6518a6c5 1207 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1208 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1209 // apply correction for material of the current layer
1210 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1211 vtrack->SetClIndex(ilayer,0);
ae00569a 1212 modstatus = 3; // skipped
1213 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1214 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1215 vtrack->IncrementNSkipped();
e43c066c 1216 ntracks[ilayer]++;
1217 }
628e7bb0 1218
2755f080 1219 // allow one prolongation without clusters for tracks with |tgl|>1.1
1220 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1221 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1222 // apply correction for material of the current layer
1223 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1224 vtrack->SetClIndex(ilayer,0);
ae00569a 1225 modstatus = 3; // skipped
1226 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1227 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1228 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1229 ntracks[ilayer]++;
1230 }
1231
e43c066c 1232
e50912db 1233 } // loop over tracks in layer ilayer+1
afd25725 1234
1235 //loop over track candidates for the current layer
e43c066c 1236 //
1237 //
1238 Int_t accepted=0;
1239
afd25725 1240 Int_t golden=0;
e43c066c 1241 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1242 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1243 if (normalizedchi2[itrack] <
1244 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1245 if (ilayer>4) {
1246 accepted++;
1247 } else {
1248 if (constrain) { // constrain
afd25725 1249 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1250 accepted++;
44347160 1251 } else { // !constrain
afd25725 1252 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1253 accepted++;
44347160 1254 }
e43c066c 1255 }
1256 }
afd25725 1257 // sort tracks by increasing normalized chi2
1258 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1259 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1260 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1261 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1262 } // end loop over layers
1263
afd25725 1264
1265 //
1266 // Now select tracks to be kept
1267 //
44347160 1268 Int_t max = constrain ? 20 : 5;
e43c066c 1269
afd25725 1270 // tracks that reach layer 0 (SPD inner)
44347160 1271 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1272 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1273 if (track.GetNumberOfClusters()<2) continue;
afd25725 1274 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1275 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1276 continue;
1277 }
15dd636f 1278 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1279 }
afd25725 1280
1281 // tracks that reach layer 1 (SPD outer)
628e7bb0 1282 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1283 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1284 if (track.GetNumberOfClusters()<4) continue;
afd25725 1285 if (!constrain && track.GetNormChi2(1) >
1286 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1287 if (constrain) track.IncrementNSkipped();
81e97e0d 1288 if (!constrain) {
b9671574 1289 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1290 track.SetNSkipped(track.GetNSkipped()+4./(4.+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 }
afd25725 1297
6518a6c5 1298 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1299 if (!constrain){
628e7bb0 1300 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1301 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1302 if (track.GetNumberOfClusters()<3) continue;
afd25725 1303 if (!constrain && track.GetNormChi2(2) >
1304 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1305 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1306 if (!constrain){
b9671574 1307 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1308 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1309 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1310 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1311 }
1312 }
15dd636f 1313 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1314 }
1315 }
81e97e0d 1316
afd25725 1317 if (!constrain) {
81e97e0d 1318 //
afd25725 1319 // register best track of each layer - important for V0 finder
81e97e0d 1320 //
1321 for (Int_t ilayer=0;ilayer<5;ilayer++){
1322 if (ntracks[ilayer]==0) continue;
1323 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1324 if (track.GetNumberOfClusters()<1) continue;
1325 CookLabel(&track,0);
1326 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1327 }
1328 }
1329 //
1330 // update TPC V0 information
1331 //
b9671574 1332 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1333 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1334 for (Int_t i=0;i<3;i++){
b9671574 1335 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1336 if (index==0) break;
44347160 1337 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1338 if (vertex->GetStatus()<0) continue; // rejected V0
1339 //
6c94f330 1340 if (otrack->GetSign()>0) {
81e97e0d 1341 vertex->SetIndex(0,esdindex);
1342 }
1343 else{
1344 vertex->SetIndex(1,esdindex);
1345 }
1346 //find nearest layer with track info
b75d63a7 1347 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1348 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1349 Int_t nearest = nearestold;
1350 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1351 if (ntracks[nearest]==0){
1352 nearest = ilayer;
1353 }
1354 }
1355 //
1356 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1357 if (nearestold<5&&nearest<5){
b9671574 1358 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1359 if (accept){
6c94f330 1360 if (track.GetSign()>0) {
b75d63a7 1361 vertex->SetParamP(track);
81e97e0d 1362 vertex->Update(fprimvertex);
44347160 1363 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1364 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1365 }else{
b75d63a7 1366 vertex->SetParamN(track);
81e97e0d 1367 vertex->Update(fprimvertex);
1368 //vertex->SetIndex(1,track.fESDtrack->GetID());
1369 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1370 }
1371 vertex->SetStatus(vertex->GetStatus()+1);
1372 }else{
44347160 1373 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1374 }
1375 }
81e97e0d 1376 }
afd25725 1377 }
1378
e43c066c 1379}
44347160 1380//------------------------------------------------------------------------
e43c066c 1381AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1382{
1383 //--------------------------------------------------------------------
1384 //
1385 //
1386 return fgLayers[layer];
1387}
44347160 1388//------------------------------------------------------------------------
8221b41b 1389AliITStrackerMI::AliITSlayer::AliITSlayer():
1390fR(0),
1391fPhiOffset(0),
1392fNladders(0),
1393fZOffset(0),
1394fNdetectors(0),
1395fDetectors(0),
1396fN(0),
1397fDy5(0),
1398fDy10(0),
1399fDy20(0),
1400fClustersCs(0),
1401fClusterIndexCs(0),
1402fYcs(0),
1403fZcs(0),
1404fNcs(0),
1405fCurrentSlice(-1),
1406fZmax(0),
1407fYmin(0),
1408fYmax(0),
1409fI(0),
1410fImax(0),
1411fSkip(0),
1412fAccepted(0),
1413fRoad(0){
e43c066c 1414 //--------------------------------------------------------------------
1415 //default AliITSlayer constructor
1416 //--------------------------------------------------------------------
e50912db 1417 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1418 fClusterWeight[i]=0;
1419 fClusterTracks[0][i]=-1;
1420 fClusterTracks[1][i]=-1;
1421 fClusterTracks[2][i]=-1;
1422 fClusterTracks[3][i]=-1;
1423 }
1424}
44347160 1425//------------------------------------------------------------------------
e43c066c 1426AliITStrackerMI::AliITSlayer::
8221b41b 1427AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1428fR(r),
1429fPhiOffset(p),
1430fNladders(nl),
1431fZOffset(z),
1432fNdetectors(nd),
1433fDetectors(0),
1434fN(0),
1435fDy5(0),
1436fDy10(0),
1437fDy20(0),
1438fClustersCs(0),
1439fClusterIndexCs(0),
1440fYcs(0),
1441fZcs(0),
1442fNcs(0),
1443fCurrentSlice(-1),
1444fZmax(0),
1445fYmin(0),
1446fYmax(0),
1447fI(0),
1448fImax(0),
1449fSkip(0),
1450fAccepted(0),
1451fRoad(0) {
e43c066c 1452 //--------------------------------------------------------------------
1453 //main AliITSlayer constructor
1454 //--------------------------------------------------------------------
e43c066c 1455 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1456 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1457}
44347160 1458//------------------------------------------------------------------------
8221b41b 1459AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1460fR(layer.fR),
1461fPhiOffset(layer.fPhiOffset),
1462fNladders(layer.fNladders),
1463fZOffset(layer.fZOffset),
1464fNdetectors(layer.fNdetectors),
1465fDetectors(layer.fDetectors),
1466fN(layer.fN),
1467fDy5(layer.fDy5),
1468fDy10(layer.fDy10),
1469fDy20(layer.fDy20),
1470fClustersCs(layer.fClustersCs),
1471fClusterIndexCs(layer.fClusterIndexCs),
1472fYcs(layer.fYcs),
1473fZcs(layer.fZcs),
1474fNcs(layer.fNcs),
1475fCurrentSlice(layer.fCurrentSlice),
1476fZmax(layer.fZmax),
1477fYmin(layer.fYmin),
1478fYmax(layer.fYmax),
1479fI(layer.fI),
1480fImax(layer.fImax),
1481fSkip(layer.fSkip),
1482fAccepted(layer.fAccepted),
1483fRoad(layer.fRoad){
1484 //Copy constructor
1485}
44347160 1486//------------------------------------------------------------------------
e43c066c 1487AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1488 //--------------------------------------------------------------------
1489 // AliITSlayer destructor
1490 //--------------------------------------------------------------------
23197852 1491 delete [] fDetectors;
e43c066c 1492 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1493 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1494 fClusterWeight[i]=0;
1495 fClusterTracks[0][i]=-1;
1496 fClusterTracks[1][i]=-1;
1497 fClusterTracks[2][i]=-1;
1498 fClusterTracks[3][i]=-1;
1499 }
1500}
44347160 1501//------------------------------------------------------------------------
e43c066c 1502void AliITStrackerMI::AliITSlayer::ResetClusters() {
1503 //--------------------------------------------------------------------
1504 // This function removes loaded clusters
1505 //--------------------------------------------------------------------
1506 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1507 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1508 fClusterWeight[i]=0;
1509 fClusterTracks[0][i]=-1;
1510 fClusterTracks[1][i]=-1;
1511 fClusterTracks[2][i]=-1;
1512 fClusterTracks[3][i]=-1;
1513 }
1514
1515 fN=0;
1516 fI=0;
1517}
44347160 1518//------------------------------------------------------------------------
e43c066c 1519void AliITStrackerMI::AliITSlayer::ResetWeights() {
1520 //--------------------------------------------------------------------
1521 // This function reset weights of the clusters
1522 //--------------------------------------------------------------------
e50912db 1523 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1524 fClusterWeight[i]=0;
1525 fClusterTracks[0][i]=-1;
1526 fClusterTracks[1][i]=-1;
1527 fClusterTracks[2][i]=-1;
1528 fClusterTracks[3][i]=-1;
1529 }
1530 for (Int_t i=0; i<fN;i++) {
00a7cc50 1531 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1532 if (cl&&cl->IsUsed()) cl->Use();
1533 }
1534
1535}
44347160 1536//------------------------------------------------------------------------
e43c066c 1537void AliITStrackerMI::AliITSlayer::ResetRoad() {
1538 //--------------------------------------------------------------------
1539 // This function calculates the road defined by the cluster density
1540 //--------------------------------------------------------------------
1541 Int_t n=0;
1542 for (Int_t i=0; i<fN; i++) {
1543 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1544 }
afd25725 1545 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1546}
44347160 1547//------------------------------------------------------------------------
afd25725 1548Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1549 //--------------------------------------------------------------------
1550 //This function adds a cluster to this layer
1551 //--------------------------------------------------------------------
e50912db 1552 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1553 ::Error("InsertCluster","Too many clusters !\n");
1554 return 1;
1555 }
1556 fCurrentSlice=-1;
afd25725 1557 fClusters[fN]=cl;
1d4090b7 1558 fN++;
afd25725 1559 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1560 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1561 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1562 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1563 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1564
1565 return 0;
1566}
44347160 1567//------------------------------------------------------------------------
e43c066c 1568void AliITStrackerMI::AliITSlayer::SortClusters()
1569{
1570 //
1571 //sort clusters
1572 //
00a7cc50 1573 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1574 Float_t *z = new Float_t[fN];
1575 Int_t * index = new Int_t[fN];
1576 //
1577 for (Int_t i=0;i<fN;i++){
1578 z[i] = fClusters[i]->GetZ();
1579 }
1580 TMath::Sort(fN,z,index,kFALSE);
1581 for (Int_t i=0;i<fN;i++){
1582 clusters[i] = fClusters[index[i]];
1583 }
1584 //
1585 for (Int_t i=0;i<fN;i++){
1586 fClusters[i] = clusters[i];
1587 fZ[i] = fClusters[i]->GetZ();
1588 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1589 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1590 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1591 fY[i] = y;
1592 }
1593 delete[] index;
1594 delete[] z;
1595 delete[] clusters;
1596 //
1597
e43c066c 1598 fYB[0]=10000000;
1599 fYB[1]=-10000000;
1600 for (Int_t i=0;i<fN;i++){
1601 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1602 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1603 fClusterIndex[i] = i;
1604 }
1605 //
1606 // fill slices
1607 fDy5 = (fYB[1]-fYB[0])/5.;
1608 fDy10 = (fYB[1]-fYB[0])/10.;
1609 fDy20 = (fYB[1]-fYB[0])/20.;
1610 for (Int_t i=0;i<6;i++) fN5[i] =0;
1611 for (Int_t i=0;i<11;i++) fN10[i]=0;
1612 for (Int_t i=0;i<21;i++) fN20[i]=0;
1613 //
1614 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;}
1615 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;}
1616 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;}
1617 //
1618 //
1d4090b7 1619 for (Int_t i=0;i<fN;i++)
1620 for (Int_t irot=-1;irot<=1;irot++){
1621 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1622 // slice 5
1623 for (Int_t slice=0; slice<6;slice++){
e50912db 1624 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1625 fClusters5[slice][fN5[slice]] = fClusters[i];
1626 fY5[slice][fN5[slice]] = curY;
1627 fZ5[slice][fN5[slice]] = fZ[i];
1628 fClusterIndex5[slice][fN5[slice]]=i;
1629 fN5[slice]++;
1630 }
e43c066c 1631 }
1d4090b7 1632 // slice 10
1633 for (Int_t slice=0; slice<11;slice++){
e50912db 1634 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1635 fClusters10[slice][fN10[slice]] = fClusters[i];
1636 fY10[slice][fN10[slice]] = curY;
1637 fZ10[slice][fN10[slice]] = fZ[i];
1638 fClusterIndex10[slice][fN10[slice]]=i;
1639 fN10[slice]++;
1640 }
e43c066c 1641 }
1d4090b7 1642 // slice 20
1643 for (Int_t slice=0; slice<21;slice++){
e50912db 1644 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1645 fClusters20[slice][fN20[slice]] = fClusters[i];
1646 fY20[slice][fN20[slice]] = curY;
1647 fZ20[slice][fN20[slice]] = fZ[i];
1648 fClusterIndex20[slice][fN20[slice]]=i;
1649 fN20[slice]++;
1650 }
1651 }
e43c066c 1652 }
1d4090b7 1653
1654 //
1655 // consistency check
1656 //
1657 for (Int_t i=0;i<fN-1;i++){
1658 if (fZ[i]>fZ[i+1]){
ae00569a 1659 printf("Bug\n");
e43c066c 1660 }
1661 }
1d4090b7 1662 //
1663 for (Int_t slice=0;slice<21;slice++)
1664 for (Int_t i=0;i<fN20[slice]-1;i++){
1665 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1666 printf("Bug\n");
1d4090b7 1667 }
1668 }
1669
1670
e43c066c 1671}
44347160 1672//------------------------------------------------------------------------
e43c066c 1673Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1674 //--------------------------------------------------------------------
1675 // This function returns the index of the nearest cluster
1676 //--------------------------------------------------------------------
1677 Int_t ncl=0;
1678 const Float_t *zcl;
1679 if (fCurrentSlice<0) {
1680 ncl = fN;
1681 zcl = fZ;
1682 }
1683 else{
1684 ncl = fNcs;
1685 zcl = fZcs;;
1686 }
1687
1688 if (ncl==0) return 0;
1689 Int_t b=0, e=ncl-1, m=(b+e)/2;
1690 for (; b<e; m=(b+e)/2) {
1691 // if (z > fClusters[m]->GetZ()) b=m+1;
1692 if (z > zcl[m]) b=m+1;
1693 else e=m;
1694 }
1695 return m;
1696}
44347160 1697//------------------------------------------------------------------------
1c97ce2f 1698Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1699 //--------------------------------------------------------------------
1700 // This function computes the rectangular road for this track
1701 //--------------------------------------------------------------------
1702
1703
1704 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1705 // take into account the misalignment: propagate track to misaligned detector plane
1706 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1707
1708 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1709 TMath::Sqrt(track->GetSigmaZ2() +
1710 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1711 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1712 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1713 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1714 TMath::Sqrt(track->GetSigmaY2() +
1715 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1716 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1717 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1718
1719 // track at boundary between detectors, enlarge road
1720 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1721 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1722 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1723 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1724 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1725 Float_t tgl = TMath::Abs(track->GetTgl());
1726 if (tgl > 1.) tgl=1.;
1727 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1728 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1729 Float_t snp = TMath::Abs(track->GetSnp());
1730 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1731 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1732 } // boundary
1733
1734 // add to the road a term (up to 2-3 mm) to deal with misalignments
1735 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1736 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1737
1738 Double_t r = fgLayers[ilayer].GetR();
1739 zmin = track->GetZ() - dz;
1740 zmax = track->GetZ() + dz;
1741 ymin = track->GetY() + r*det.GetPhi() - dy;
1742 ymax = track->GetY() + r*det.GetPhi() + dy;
1743
1744 // bring track back to idead detector plane
1745 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1746
1747 return kTRUE;
1748}
1749//------------------------------------------------------------------------
e43c066c 1750void AliITStrackerMI::AliITSlayer::
1751SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1752 //--------------------------------------------------------------------
1753 // This function sets the "window"
1754 //--------------------------------------------------------------------
1755
628e7bb0 1756 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1757 fYmin = ymin; fYmax =ymax;
1758 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1759 if (ymiddle<fYB[0]) {
1760 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1761 } else if (ymiddle>fYB[1]) {
1762 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1763 }
ae00569a 1764
e43c066c 1765 //
1766 fCurrentSlice =-1;
1767 // defualt take all
1768 fClustersCs = fClusters;
1769 fClusterIndexCs = fClusterIndex;
1770 fYcs = fY;
1771 fZcs = fZ;
1772 fNcs = fN;
628e7bb0 1773 //
e43c066c 1774 //is in 20 slice?
1775 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1776 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1777 if (slice<0) slice=0;
1778 if (slice>20) slice=20;
1779 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1780 if (isOK) {
1781 fCurrentSlice=slice;
1782 fClustersCs = fClusters20[fCurrentSlice];
1783 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1784 fYcs = fY20[fCurrentSlice];
1785 fZcs = fZ20[fCurrentSlice];
1786 fNcs = fN20[fCurrentSlice];
1787 }
1788 }
1789 //
1790 //is in 10 slice?
1791 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1792 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1793 if (slice<0) slice=0;
1794 if (slice>10) slice=10;
1795 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1796 if (isOK) {
1797 fCurrentSlice=slice;
1798 fClustersCs = fClusters10[fCurrentSlice];
1799 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1800 fYcs = fY10[fCurrentSlice];
1801 fZcs = fZ10[fCurrentSlice];
1802 fNcs = fN10[fCurrentSlice];
1803 }
1804 }
1805 //
1806 //is in 5 slice?
1807 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1808 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1809 if (slice<0) slice=0;
1810 if (slice>5) slice=5;
1811 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1812 if (isOK) {
e43c066c 1813 fCurrentSlice=slice;
1814 fClustersCs = fClusters5[fCurrentSlice];
1815 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1816 fYcs = fY5[fCurrentSlice];
1817 fZcs = fZ5[fCurrentSlice];
1818 fNcs = fN5[fCurrentSlice];
1819 }
1820 }
628e7bb0 1821 //
e43c066c 1822 fI=FindClusterIndex(zmin); fZmax=zmax;
1823 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1824 fSkip = 0;
1825 fAccepted =0;
6518a6c5 1826
1827 return;
e43c066c 1828}
44347160 1829//------------------------------------------------------------------------
628e7bb0 1830Int_t AliITStrackerMI::AliITSlayer::
1831FindDetectorIndex(Double_t phi, Double_t z) const {
1832 //--------------------------------------------------------------------
1833 //This function finds the detector crossed by the track
1834 //--------------------------------------------------------------------
31fb8575 1835 Double_t dphi;
1836 if (fZOffset<0) // old geometry
1837 dphi = -(phi-fPhiOffset);
1838 else // new geometry
1839 dphi = phi-fPhiOffset;
1840
6518a6c5 1841
628e7bb0 1842 if (dphi < 0) dphi += 2*TMath::Pi();
1843 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1844 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1845 if (np>=fNladders) np-=fNladders;
1846 if (np<0) np+=fNladders;
1847
6518a6c5 1848
628e7bb0 1849 Double_t dz=fZOffset-z;
6518a6c5 1850 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1851 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1852 if (nz>=fNdetectors) return -1;
1853 if (nz<0) return -1;
1854
23197852 1855 // ad hoc correction for 3rd ladder of SDD inner layer,
1856 // which is reversed (rotated by pi around local y)
1857 // this correction is OK only from AliITSv11Hybrid onwards
1858 if (GetR()>12. && GetR()<20.) { // SDD inner
1859 if(np==2) { // 3rd ladder
1860 nz = (fNdetectors-1) - nz;
1861 }
1862 }
1863 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1864
1865
628e7bb0 1866 return np*fNdetectors + nz;
1867}
44347160 1868//------------------------------------------------------------------------
ae00569a 1869const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1870{
e43c066c 1871 //--------------------------------------------------------------------
1872 // This function returns clusters within the "window"
1873 //--------------------------------------------------------------------
1874
ae00569a 1875 if (fCurrentSlice<0) {
e43c066c 1876 Double_t rpi2 = 2.*fR*TMath::Pi();
1877 for (Int_t i=fI; i<fImax; i++) {
1878 Double_t y = fY[i];
1879 if (fYmax<y) y -= rpi2;
1d4090b7 1880 if (fYmin>y) y += rpi2;
e43c066c 1881 if (y<fYmin) continue;
1882 if (y>fYmax) continue;
1883 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1884 ci=i;
ae00569a 1885 if (!test) fI=i+1;
e43c066c 1886 return fClusters[i];
1887 }
ae00569a 1888 } else {
e43c066c 1889 for (Int_t i=fI; i<fImax; i++) {
1890 if (fYcs[i]<fYmin) continue;
1891 if (fYcs[i]>fYmax) continue;
1892 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1893 ci=fClusterIndexCs[i];
ae00569a 1894 if (!test) fI=i+1;
e43c066c 1895 return fClustersCs[i];
1896 }
1897 }
1898 return 0;
1899}
44347160 1900//------------------------------------------------------------------------
e43c066c 1901Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1902const {
1903 //--------------------------------------------------------------------
afd25725 1904 // This function returns the layer thickness at this point (units X0)
e43c066c 1905 //--------------------------------------------------------------------
1906 Double_t d=0.0085;
e50912db 1907 x0=AliITSRecoParam::GetX0Air();
e43c066c 1908 if (43<fR&&fR<45) { //SSD2
1909 Double_t dd=0.0034;
1910 d=dd;
1911 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1912 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1913 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1914 for (Int_t i=0; i<12; i++) {
1915 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1916 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1917 d+=0.0034;
1918 break;
1919 }
1920 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1921 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1922 d+=0.0034;
1923 break;
1924 }
1925 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1926 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1927 }
1928 } else
1929 if (37<fR&&fR<41) { //SSD1
1930 Double_t dd=0.0034;
1931 d=dd;
1932 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1933 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1934 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1935 for (Int_t i=0; i<11; i++) {
1936 if (TMath::Abs(z-3.9*i)<0.15) {
1937 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1938 d+=dd;
1939 break;
1940 }
1941 if (TMath::Abs(z+3.9*i)<0.15) {
1942 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1943 d+=dd;
1944 break;
1945 }
1946 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1947 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1948 }
1949 } else
1950 if (13<fR&&fR<26) { //SDD
1951 Double_t dd=0.0033;
1952 d=dd;
1953 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1954
1955 if (TMath::Abs(y-1.80)<0.55) {
1956 d+=0.016;
1957 for (Int_t j=0; j<20; j++) {
1958 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1959 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1960 }
1961 }
1962 if (TMath::Abs(y+1.80)<0.55) {
1963 d+=0.016;
1964 for (Int_t j=0; j<20; j++) {
1965 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1966 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1967 }
1968 }
1969
1970 for (Int_t i=0; i<4; i++) {
1971 if (TMath::Abs(z-7.3*i)<0.60) {
1972 d+=dd;
1973 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1974 break;
1975 }
1976 if (TMath::Abs(z+7.3*i)<0.60) {
1977 d+=dd;
1978 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1979 break;
1980 }
1981 }
1982 } else
1983 if (6<fR&&fR<8) { //SPD2
1984 Double_t dd=0.0063; x0=21.5;
1985 d=dd;
1986 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 1987 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 1988 } else
1989 if (3<fR&&fR<5) { //SPD1
1990 Double_t dd=0.0063; x0=21.5;
1991 d=dd;
1992 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 1993 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 1994 }
1995
1996 return d;
1997}
44347160 1998//------------------------------------------------------------------------
23197852 1999AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2000fR(det.fR),
1c97ce2f 2001fRmisal(det.fRmisal),
23197852 2002fPhi(det.fPhi),
2003fSinPhi(det.fSinPhi),
2004fCosPhi(det.fCosPhi),
2005fYmin(det.fYmin),
2006fYmax(det.fYmax),
2007fZmin(det.fZmin),
2008fZmax(det.fZmax),
2009fIsBad(det.fIsBad),
2010fNChips(det.fNChips),
2011fChipIsBad(det.fChipIsBad)
2012{
2013 //Copy constructor
2014}
2015//------------------------------------------------------------------------
2016void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2017 AliITSDetTypeRec *detTypeRec)
2018{
2019 //--------------------------------------------------------------------
2020 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2021 //--------------------------------------------------------------------
2022
2023 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2024 // while in the tracker they start from 0 for each layer
2025 for(Int_t il=0; il<ilayer; il++)
2026 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2027
2028 Int_t detType;
2029 if (ilayer==0 || ilayer==1) { // ---------- SPD
2030 detType = 0;
2031 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2032 detType = 1;
2033 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2034 detType = 2;
2035 } else {
2036 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2037 return;
2038 }
2039
2040 // Get calibration from AliITSDetTypeRec
2041 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2042 calib->SetModuleIndex(idet);
23197852 2043 AliITSCalibration *calibSPDdead = 0;
2044 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2045 if (calib->IsBad() ||
2046 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2047 {
2048 SetBad();
359ac74d 2049 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2050 }
2051
2052 // Get segmentation from AliITSDetTypeRec
2053 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2054
2055 // Read info about bad chips
2056 fNChips = segm->GetMaximumChipIndex()+1;
2057 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2058 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2059 fChipIsBad = new Bool_t[fNChips];
2060 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2061 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2062 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2063 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2064 }
2065
2066 return;
2067}
2068//------------------------------------------------------------------------
e50912db 2069Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2070{
2071 //--------------------------------------------------------------------
afd25725 2072 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2073 //--------------------------------------------------------------------
e43c066c 2074
e50912db 2075 if(fUseTGeo!=0) {
2076 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2077 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2078 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2079 }
2080
afd25725 2081 // beam pipe
e50912db 2082 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2083 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2084
2085 // layers
2086 Double_t x0=0;
e43c066c 2087 Double_t xn=fgLayers[fI].GetR();
2088 for (Int_t i=0; i<fI; i++) {
2089 Double_t xi=fgLayers[i].GetR();
e50912db 2090 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2091 d+=dLayer*xi*xi;
e43c066c 2092 }
2093
afd25725 2094 // shields
e43c066c 2095 if (fI>1) {
e50912db 2096 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2097 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2098 }
e43c066c 2099 if (fI>3) {
e50912db 2100 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2101 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2102 }
e43c066c 2103 return d/(xn*xn);
2104}
44347160 2105//------------------------------------------------------------------------
e43c066c 2106Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2107 //-------------------------------------------------------------------
e43c066c 2108 // This function returns number of clusters within the "window"
2109 //--------------------------------------------------------------------
2110 Int_t ncl=0;
2111 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2112 const AliITSRecPoint *c=fClusters[i];
e43c066c 2113 if (c->GetZ() > fZmax) break;
2114 if (c->IsUsed()) continue;
2115 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2116 Double_t y=fR*det.GetPhi() + c->GetY();
2117
2118 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2119 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2120
2121 if (y<fYmin) continue;
2122 if (y>fYmax) continue;
2123 ncl++;
2124 }
2125 return ncl;
2126}
44347160 2127//------------------------------------------------------------------------
ae00569a 2128Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2129 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2130{
e43c066c 2131 //--------------------------------------------------------------------
ae00569a 2132 // This function refits the track "track" at the position "x" using
2133 // the clusters from "clusters"
ef7253ac 2134 // If "extra"==kTRUE,
ae00569a 2135 // the clusters from overlapped modules get attached to "track"
7167ae53 2136 // If "planeff"==kTRUE,
2137 // special approach for plane efficiency evaluation is applyed
e43c066c 2138 //--------------------------------------------------------------------
6518a6c5 2139
e50912db 2140 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2141 Int_t k;
e50912db 2142 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2143 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2144 for (k=0; k<nc; k++) {
ae00569a 2145 Int_t idx=clusters->GetClusterIndex(k);
2146 Int_t ilayer=(idx&0xf0000000)>>28;
2147 index[ilayer]=idx;
e43c066c 2148 }
67c1e979 2149
7167ae53 2150 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2151}
44347160 2152//------------------------------------------------------------------------
ae00569a 2153Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2154 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2155{
67c1e979 2156 //--------------------------------------------------------------------
ae00569a 2157 // This function refits the track "track" at the position "x" using
67c1e979 2158 // the clusters from array
ae00569a 2159 // If "extra"==kTRUE,
2160 // the clusters from overlapped modules get attached to "track"
7167ae53 2161 // If "planeff"==kTRUE,
2162 // special approach for plane efficiency evaluation is applyed
67c1e979 2163 //--------------------------------------------------------------------
e50912db 2164 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2165 Int_t k;
e50912db 2166 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2167 //
e50912db 2168 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2169 index[k]=clusters[k];
67c1e979 2170 }
2171
afd25725 2172 // special for cosmics: check which the innermost layer crossed
2173 // by the track
2174 Int_t innermostlayer=5;
ae00569a 2175 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2176 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2177 if(drphi < fgLayers[innermostlayer].GetR()) break;
2178 }
2179 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2180
ae00569a 2181 Int_t modstatus=1; // found
2182 Float_t xloc,zloc;
67c1e979 2183 Int_t from, to, step;
ae00569a 2184 if (xx > track->GetX()) {
e50912db 2185 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2186 step=+1;
2187 } else {
e50912db 2188 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2189 step=-1;
2190 }
ae00569a 2191 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2192
ae00569a 2193 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2194 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2195 Double_t r=layer.GetR();
afd25725 2196 if (step<0 && xx>r) break;
2197
2198 // material between SSD and SDD, SDD and SPD
6518a6c5 2199 Double_t hI=ilayer-0.5*step;
e50912db 2200 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2201 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2202 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2203 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2204
2205 // remember old position [SR, GSI 18.02.2003]
2206 Double_t oldX=0., oldY=0., oldZ=0.;
ae00569a 2207 if (track->IsStartedTimeIntegral() && step==1) {
d1181f10 2208 if (!track->GetGlobalXYZat(track->GetX(),oldX,oldY,oldZ)) return kFALSE;
67c1e979 2209 }
2210 //
ae00569a 2211
afd25725 2212 Double_t oldGlobXYZ[3];
d1181f10 2213 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2214
8602c008 2215 Double_t phi,z;
ae00569a 2216 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2217
67c1e979 2218 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2219
2220 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2221 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2222 if (skip==2) {
2223 // propagate to the layer radius
d1181f10 2224 Double_t xToGo; if (!track->GetLocalXat(r,xToGo)) return kFALSE;
2225 if (!track->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return kFALSE;
6518a6c5 2226 // apply correction for material of the current layer
ae00569a 2227 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2228 modstatus = 4; // out in z
d1181f10 2229 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2230 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2231 }
6518a6c5 2232 // track time update [SR, GSI 17.02.2003]
ae00569a 2233 if (track->IsStartedTimeIntegral() && step==1) {
6518a6c5 2234 Double_t newX, newY, newZ;
d1181f10 2235 if (!track->GetGlobalXYZat(track->GetX(),newX,newY,newZ)) return kFALSE;
6518a6c5 2236 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2237 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2238 track->AddTimeStep(TMath::Sqrt(dL2));
6518a6c5 2239 }
2240 continue;
2241 }
2242
e50912db 2243 if (idet<0) return kFALSE;
ae00569a 2244
67c1e979 2245 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2246 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2247
ae00569a 2248 track->SetDetectorIndex(idet);
d1181f10 2249 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2250
23197852 2251 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2252
2253 const AliITSRecPoint *clAcc=0;
44347160 2254 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2255
6518a6c5 2256 Int_t idx=index[ilayer];
ae00569a 2257 if (idx>=0) { // cluster in this layer
2258 modstatus = 6; // no refit
2259 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2260 if (cl) {
2261 if (idet != cl->GetDetectorIndex()) {
2262 idet=cl->GetDetectorIndex();
a5d0fae6 2263 const AliITSdetector &detc=layer.GetDetector(idet);
2264 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2265 track->SetDetectorIndex(idet);
d1181f10 2266 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2267 }
ae00569a 2268 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2269 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2270 if (chi2<maxchi2) {
2271 clAcc=cl;
2272 maxchi2=chi2;
2273 modstatus = 1; // found
2274 } else {
7167ae53 2275 return kFALSE; //
ae00569a 2276 }
2277 }
2278 } else { // no cluster in this layer
2279 if (skip==1) {
2280 modstatus = 3; // skipped
0ed58a47 2281 // Plane Eff determination:
2282 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2283 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2284 UseTrackForPlaneEff(track,ilayer);
7167ae53 2285 }
ae00569a 2286 } else {
2287 modstatus = 5; // no cls in road
2288 // check dead
1c97ce2f 2289 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2290 dz = 0.5*(zmax-zmin);
2291 dy = 0.5*(ymax-ymin);
2292 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2293 if (dead==1) modstatus = 7; // holes in z in SPD
23197852 2294 if (dead==2 || dead==3) modstatus = 2; // dead from OCDB
ae00569a 2295 }
e43c066c 2296 }
ae00569a 2297
2298 if (clAcc) {
2299 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2300 track->SetSampledEdx(clAcc->GetQ(),track->GetNumberOfClusters()-1);
e43c066c 2301 }
ae00569a 2302 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2303
2304
2305 if (extra) { // search for extra clusters in overlapped modules
2306 AliITStrackV2 tmp(*track);
1c97ce2f 2307 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2308 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2309
2310 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2311 Int_t idetExtra=-1;
a5d0fae6 2312 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2313 Double_t tolerance=0.1;
ae00569a 2314 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2315 // only clusters in another module! (overlaps)
2316 idetExtra = clExtra->GetDetectorIndex();
2317 if (idet == idetExtra) continue;
2318
a5d0fae6 2319 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2320
1c97ce2f 2321 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2322 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2323 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2324 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2325
2326 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2327 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2328 }
2329 if (cci>=0) {
2330 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2331 track->SetExtraModule(ilayer,idetExtra);
2332 }
2333 } // end search for extra clusters in overlapped modules
1c97ce2f 2334
afd25725 2335 // Correct for material of the current layer
ae00569a 2336 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2337
2338 // track time update [SR, GSI 17.02.2003]
ae00569a 2339 if (track->IsStartedTimeIntegral() && step==1) {
e43c066c 2340 Double_t newX, newY, newZ;
d1181f10 2341 if (!track->GetGlobalXYZat(track->GetX(),newX,newY,newZ)) return kFALSE;
e43c066c 2342 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2343 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2344 track->AddTimeStep(TMath::Sqrt(dL2));
e43c066c 2345 }
2346 //
2347
ae00569a 2348 } // end loop on layers
2349
2350 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2351
e43c066c 2352 return kTRUE;
2353}
44347160 2354//------------------------------------------------------------------------
15dd636f 2355Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2356{
2357 //
2358 // calculate normalized chi2
2359 // return NormalizedChi2(track,0);
2360 Float_t chi2 = 0;
2361 Float_t sum=0;
2362 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2363 // track->fdEdxMismatch=0;
2364 Float_t dedxmismatch =0;
2365 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2366 if (mode<100){
2367 for (Int_t i = 0;i<6;i++){
b9671574 2368 if (track->GetClIndex(i)>0){
e43c066c 2369 Float_t cerry, cerrz;
2370 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2371 else
b9671574 2372 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2373 cerry*=cerry;
2374 cerrz*=cerrz;
b9671574 2375 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2376 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2377 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2378 if (ratio<0.5) {
2379 cchi2+=(0.5-ratio)*10.;
2380 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2381 dedxmismatch+=(0.5-ratio)*10.;
2382 }
2383 }
2384 if (i<2 ||i>3){
b9671574 2385 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2386 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2387 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2388 if (i<2) chi2+=2*cl->GetDeltaProbability();
2389 }
2390 chi2+=cchi2;
2391 sum++;
2392 }
2393 }
b9671574 2394 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2395 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2396 }
2397 }
2398 else{
2399 for (Int_t i = 0;i<4;i++){
b9671574 2400 if (track->GetClIndex(i)>0){
e43c066c 2401 Float_t cerry, cerrz;
2402 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2403 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2404 cerry*=cerry;
2405 cerrz*=cerrz;
b9671574 2406 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2407 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2408 sum++;
2409 }
2410 }
2411 for (Int_t i = 4;i<6;i++){
b9671574 2412 if (track->GetClIndex(i)>0){
e43c066c 2413 Float_t cerry, cerrz;
2414 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2415 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2416 cerry*=cerry;
2417 cerrz*=cerrz;
2418 Float_t cerryb, cerrzb;
2419 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2420 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2421 cerryb*=cerryb;
2422 cerrzb*=cerrzb;
b9671574 2423 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2424 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2425 sum++;
2426 }
2427 }
2428 }
b9671574 2429 if (track->GetESDtrack()->GetTPCsignal()>85){
2430 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2431 if (ratio<0.5) {
2432 chi2+=(0.5-ratio)*5.;
2433 }
2434 if (ratio>2){
2435 chi2+=(ratio-2.0)*3;
2436 }
2437 }
2438 //
b9671574 2439 Double_t match = TMath::Sqrt(track->GetChi22());
2440 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2441 if (!track->GetConstrain()) {
2442 if (track->GetNumberOfClusters()>2) {
2443 match/=track->GetNumberOfClusters()-2.;
2444 } else {
2445 match=0;
2446 }
2447 }
e43c066c 2448 if (match<0) match=0;
b9671574 2449 Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
2450 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2451 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2452 1./(1.+track->GetNSkipped()));
e43c066c 2453
2454 return normchi2;
2455}
44347160 2456//------------------------------------------------------------------------
15dd636f 2457Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
e43c066c 2458{
2459 //
2460 // return matching chi2 between two tracks
d1181f10 2461 Double_t largeChi2=1000.;
2462
15dd636f 2463 AliITStrackMI track3(*track2);
d1181f10 2464 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2465 TMatrixD vec(5,1);
6c94f330 2466 vec(0,0)=track1->GetY() - track3.GetY();
2467 vec(1,0)=track1->GetZ() - track3.GetZ();
2468 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2469 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2470 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2471 //
2472 TMatrixD cov(5,5);
6c94f330 2473 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2474 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2475 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2476 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2477 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2478
6c94f330 2479 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2480 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2481 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2482 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2483 //
6c94f330 2484 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2485 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2486 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2487 //
6c94f330 2488 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2489 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2490 //
6c94f330 2491 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2492
2493 cov.Invert();
2494 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2495 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2496 return chi2(0,0);
2497}
44347160 2498//------------------------------------------------------------------------
6518a6c5 2499Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr)
e43c066c 2500{
2501 //
afd25725 2502 // return probability that given point (characterized by z position and error)
2503 // is in SPD dead zone
e43c066c 2504 //
afd25725 2505 Double_t probability = 0.;
e43c066c 2506 Double_t absz = TMath::Abs(zpos);
afd25725 2507 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2508 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2509 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2510 Double_t zmin, zmax;
2511 if (zpos<-6.) { // dead zone at z = -7
e50912db 2512 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2513 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2514 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2515 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2516 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2517 } else if (absz<2.) { // dead zone at z = 0
e50912db 2518 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2519 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2520 } else {
2521 zmin = 0.;
2522 zmax = 0.;
e43c066c 2523 }
afd25725 2524 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2525 // dead zone)
2526 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2527 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2528 return probability;
2529}
44347160 2530//------------------------------------------------------------------------
15dd636f 2531Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
e43c066c 2532{
2533 //
2534 // calculate normalized chi2
2535 Float_t chi2[6];
2536 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2537 Float_t ncl = 0;
2538 for (Int_t i = 0;i<6;i++){
b9671574 2539 if (TMath::Abs(track->GetDy(i))>0){
2540 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2541 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2542 ncl++;
2543 }
2544 else{chi2[i]=10000;}
2545 }
2546 Int_t index[6];
2547 TMath::Sort(6,chi2,index,kFALSE);
2548 Float_t max = float(ncl)*fac-1.;
2549 Float_t sumchi=0, sumweight=0;
2550 for (Int_t i=0;i<max+1;i++){
2551 Float_t weight = (i<max)?1.:(max+1.-i);
2552 sumchi+=weight*chi2[index[i]];
2553 sumweight+=weight;
2554 }
2555 Double_t normchi2 = sumchi/sumweight;
2556 return normchi2;
2557}
44347160 2558//------------------------------------------------------------------------
15dd636f 2559Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
e43c066c 2560{
2561 //
2562 // calculate normalized chi2
2563 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2564 Int_t npoints = 0;
2565 Double_t res =0;
2566 for (Int_t i=0;i<6;i++){
b9671574 2567 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2568 Double_t sy1 = forwardtrack->GetSigmaY(i);
2569 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2570 Double_t sy2 = backtrack->GetSigmaY(i);
2571 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2572 if (i<2){ sy2=1000.;sz2=1000;}
2573 //
b9671574 2574 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2575 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2576 //
2577 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2578 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2579 //
2580 res+= nz0*nz0+ny0*ny0;
2581 npoints++;
2582 }
2583 if (npoints>1) return
6c23ffed 2584 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2585 //2*forwardtrack->fNUsed+
b9671574 2586 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2587 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2588 return 1000;
2589}
44347160 2590//------------------------------------------------------------------------
e43c066c 2591Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2592 //--------------------------------------------------------------------
2593 // Return pointer to a given cluster
2594 //--------------------------------------------------------------------
2595 Int_t l=(index & 0xf0000000) >> 28;
2596 Int_t c=(index & 0x0fffffff) >> 00;
2597 return fgLayers[l].GetWeight(c);
2598}
44347160 2599//------------------------------------------------------------------------
15dd636f 2600void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
e43c066c 2601{
2602 //---------------------------------------------
2603 // register track to the list
628e7bb0 2604 //
b9671574 2605 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2606 //
2607 //
e43c066c 2608 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2609 Int_t index = track->GetClusterIndex(icluster);
2610 Int_t l=(index & 0xf0000000) >> 28;
2611 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2612 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2613 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2614 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2615 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2616 break;
2617 }
2618 }
2619 }
2620}
44347160 2621//------------------------------------------------------------------------
15dd636f 2622void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
e43c066c 2623{
2624 //---------------------------------------------
2625 // unregister track from the list
2626 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2627 Int_t index = track->GetClusterIndex(icluster);
2628 Int_t l=(index & 0xf0000000) >> 28;
2629 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2630 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2631 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2632 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2633 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2634 }
2635 }
2636 }
2637}
44347160 2638//------------------------------------------------------------------------
00a7cc50 2639Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2640{
2641 //-------------------------------------------------------------
2642 //get number of shared clusters
2643 //-------------------------------------------------------------
2644 Float_t shared=0;
2645 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2646 // mean number of clusters
2647 Float_t *ny = GetNy(id), *nz = GetNz(id);
2648
2649
2650 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2651 Int_t index = track->GetClusterIndex(icluster);
2652 Int_t l=(index & 0xf0000000) >> 28;
2653 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2654 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2655 if (ny[l]==0){
2656 printf("problem\n");
2657 }
00a7cc50 2658 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2659 Float_t weight=1;
2660 //
2661 Float_t deltan = 0;
2662 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2663 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2664 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2665 if (l<2 || l>3){
2666 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2667 }
2668 else{
2669 deltan = (cl->GetNz()-nz[l]);
2670 }
2671 if (deltan>2.0) continue; // extended - highly probable shared cluster
2672 weight = 2./TMath::Max(3.+deltan,2.);
2673 //
2674 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2675 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2676 list[l]=index;
00a7cc50 2677 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2678 shared+=weight;
2679 break;
2680 }
2681 }
2682 }
b9671574 2683 track->SetNUsed(shared);
e43c066c 2684 return shared;
2685}
44347160 2686//------------------------------------------------------------------------
15dd636f 2687Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2688{
2689 //
2690 // find first shared track
2691 //
2692 // mean number of clusters
2693 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2694 //
2695 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2696 Int_t sharedtrack=100000;
2697 Int_t tracks[24],trackindex=0;
2698 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2699 //
2700 for (Int_t icluster=0;icluster<6;icluster++){
2701 if (clusterlist[icluster]<0) continue;
2702 Int_t index = clusterlist[icluster];
2703 Int_t l=(index & 0xf0000000) >> 28;
2704 Int_t c=(index & 0x0fffffff) >> 00;
2705 if (ny[l]==0){
2706 printf("problem\n");
2707 }
b9671574 2708 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2709 //if (l>3) continue;
00a7cc50 2710 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2711 //
2712 Float_t deltan = 0;
2713 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2714 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2715 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2716 if (l<2 || l>3){
2717 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2718 }
2719 else{
2720 deltan = (cl->GetNz()-nz[l]);
2721 }
2722 if (deltan>2.0) continue; // extended - highly probable shared cluster
2723 //
2724 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2725 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2726 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2727 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2728 trackindex++;
2729 }
2730 }
2731 }
2732 if (trackindex==0) return -1;
2733 if (trackindex==1){
2734 sharedtrack = tracks[0];
2735 }else{
2736 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2737 else{
2738 //
a5d0fae6 2739 Int_t tracks2[24], cluster[24];
2740 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2741 Int_t index =0;
2742 //
2743 for (Int_t i=0;i<trackindex;i++){
2744 if (tracks[i]<0) continue;
a5d0fae6 2745 tracks2[index] = tracks[i];
e43c066c 2746 cluster[index]++;
2747 for (Int_t j=i+1;j<trackindex;j++){
2748 if (tracks[j]<0) continue;
2749 if (tracks[j]==tracks[i]){
2750 cluster[index]++;
2751 tracks[j]=-1;
2752 }
2753 }
2754 index++;
2755 }
2756 Int_t max=0;
2757 for (Int_t i=0;i<index;i++){
2758 if (cluster[index]>max) {
a5d0fae6 2759 sharedtrack=tracks2[index];
e43c066c 2760 max=cluster[index];
2761 }
2762 }
2763 }
2764 }
2765
2766 if (sharedtrack>=100000) return -1;
2767 //
2768 // make list of overlaps
2769 shared =0;
2770 for (Int_t icluster=0;icluster<6;icluster++){
2771 if (clusterlist[icluster]<0) continue;
2772 Int_t index = clusterlist[icluster];
2773 Int_t l=(index & 0xf0000000) >> 28;
2774 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2775 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2776 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2777 if (l==0 || l==1){
2778 if (cl->GetNy()>2) continue;
2779 if (cl->GetNz()>2) continue;
2780 }
2781 if (l==4 || l==5){
2782 if (cl->GetNy()>3) continue;
2783 if (cl->GetNz()>3) continue;
2784 }
2785 //
2786 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2787 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2788 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2789 overlist[l]=index;
2790 shared++;
2791 }
2792 }
2793 }
2794 return sharedtrack;
2795}
44347160 2796//------------------------------------------------------------------------
15dd636f 2797AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2798 //
2799 // try to find track hypothesys without conflicts
2800 // with minimal chi2;
2801 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2802 Int_t entries1 = arr1->GetEntriesFast();
2803 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2804 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2805 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2806 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2807 //
15dd636f 2808 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2809 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2810 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2811
2812 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2813 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2814 UnRegisterClusterTracks(track,trackID1);
2815 }
2816 //
2817 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2818 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2819 UnRegisterClusterTracks(track,trackID2);
2820 }
2821 Int_t index1=0;
2822 Int_t index2=0;
2823 Float_t maxconflicts=6;
2824 Double_t maxchi2 =1000.;
2825 //
2826 // get weight of hypothesys - using best hypothesy
2827 Double_t w1,w2;
2828
2829 Int_t list1[6],list2[6];
00a7cc50 2830 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2831 RegisterClusterTracks(track10,trackID1);
2832 RegisterClusterTracks(track20,trackID2);
2833 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2834 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2835 UnRegisterClusterTracks(track10,trackID1);
2836 UnRegisterClusterTracks(track20,trackID2);
2837 //
2838 // normalized chi2
2839 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2840 Float_t nerry[6],nerrz[6];
2841 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2842 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2843 for (Int_t i=0;i<6;i++){
2844 if ( (erry1[i]>0) && (erry2[i]>0)) {
2845 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2846 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2847 }else{
2848 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2849 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2850 }
b9671574 2851 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2852 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2853 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2854 ncl1++;
2855 }
b9671574 2856 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2857 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2858 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2859 ncl2++;
2860 }
2861 }
2862 chi21/=ncl1;
2863 chi22/=ncl2;
2864 //
2865 //
b9671574 2866 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2867 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2868 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2869 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2870 //
2871 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2872 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2873 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2874 );
2875 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2876 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2877 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2878 );
2879
2880 Double_t sumw = w1+w2;
2881 w1/=sumw;
2882 w2/=sumw;
2883 if (w1<w2*0.5) {
2884 w1 = (d2+0.5)/(d1+d2+1.);
2885 w2 = (d1+0.5)/(d1+d2+1.);
2886 }
2887 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2888 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2889 //
2890 // get pair of "best" hypothesys
2891 //
2892 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2893 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2894
2895 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2896 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2897 //if (track1->fFakeRatio>0) continue;
2898 RegisterClusterTracks(track1,trackID1);
2899 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2900 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2901
2902 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2903 //if (track2->fFakeRatio>0) continue;
2904 Float_t nskipped=0;
2905 RegisterClusterTracks(track2,trackID2);
e43c066c 2906 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2907 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2908 UnRegisterClusterTracks(track2,trackID2);
2909 //
b9671574 2910 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2911 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2912 if (nskipped>0.5) continue;
2913 //
2914 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2915 if (conflict1+1<cconflict1) continue;
2916 if (conflict2+1<cconflict2) continue;
2917 Float_t conflict=0;
2918 Float_t sumchi2=0;
2919 Float_t sum=0;
2920 for (Int_t i=0;i<6;i++){
2921 //
2922 Float_t c1 =0.; // conflict coeficients
2923 Float_t c2 =0.;
2924 if (clist1[i]&&clist2[i]){
2925 Float_t deltan = 0;
2926 if (i<2 || i>3){
2927 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2928 }
2929 else{
2930 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2931 }
2932 c1 = 2./TMath::Max(3.+deltan,2.);
2933 c2 = 2./TMath::Max(3.+deltan,2.);
2934 }
2935 else{
2936 if (clist1[i]){
2937 Float_t deltan = 0;
2938 if (i<2 || i>3){
2939 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2940 }
2941 else{
2942 deltan = (clist1[i]->GetNz()-nz1[i]);
2943 }
2944 c1 = 2./TMath::Max(3.+deltan,2.);
2945 c2 = 0;
2946 }
2947
2948 if (clist2[i]){
2949 Float_t deltan = 0;
2950 if (i<2 || i>3){
2951 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2952 }
2953 else{
2954 deltan = (clist2[i]->GetNz()-nz2[i]);
2955 }
2956 c2 = 2./TMath::Max(3.+deltan,2.);
2957 c1 = 0;
2958 }
2959 }
2960 //
a5d0fae6 2961 chi21=0;chi22=0;
b9671574 2962 if (TMath::Abs(track1->GetDy(i))>0.) {
2963 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2964 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2965 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2966 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2967 }else{
b9671574 2968 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2969 }
2970 //
b9671574 2971 if (TMath::Abs(track2->GetDy(i))>0.) {
2972 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2973 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2974 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2975 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2976 }
2977 else{
b9671574 2978 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 2979 }
2980 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
2981 if (chi21>0) sum+=w1;
2982 if (chi22>0) sum+=w2;
2983 conflict+=(c1+c2);
2984 }
b9671574 2985 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
2986 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 2987 Double_t normchi2 = 2*conflict+sumchi2/sum;
2988 if ( normchi2 <maxchi2 ){
2989 index1 = itrack1;
2990 index2 = itrack2;
2991 maxconflicts = conflict;
2992 maxchi2 = normchi2;
2993 }
2994 }
2995 UnRegisterClusterTracks(track1,trackID1);
2996 }
2997 //
2998 // if (maxconflicts<4 && maxchi2<th0){
2999 if (maxchi2<th0*2.){