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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
af885e0f 37#include "AliESDEvent.h"
aad72f45 38#include "AliESDtrack.h"
9a5326b1 39#include "AliESDVertex.h"
6c94f330 40#include "AliV0.h"
bf6adc12 41#include "AliHelix.h"
00a7cc50 42#include "AliITSRecPoint.h"
e341247d 43#include "AliITSgeomTGeo.h"
44347160 44#include "AliITSReconstructor.h"
df29e9a4 45#include "AliTrackPointArray.h"
46#include "AliAlignObj.h"
572f41f9 47#include "AliITSClusterParam.h"
ae00569a 48#include "AliCDBManager.h"
49#include "AliCDBEntry.h"
23197852 50#include "AliITSsegmentation.h"
51#include "AliITSCalibration.h"
ae00569a 52#include "AliITSCalibrationSPD.h"
53#include "AliITSCalibrationSDD.h"
54#include "AliITSCalibrationSSD.h"
7167ae53 55#include "AliITSPlaneEff.h"
56#include "AliITSPlaneEffSPD.h"
57#include "AliITSPlaneEffSDD.h"
58#include "AliITSPlaneEffSSD.h"
ae00569a 59#include "AliITStrackerMI.h"
e43c066c 60
61ClassImp(AliITStrackerMI)
e43c066c 62
e50912db 63AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 64
8221b41b 65AliITStrackerMI::AliITStrackerMI():AliTracker(),
66fI(0),
67fBestTrack(),
68fTrackToFollow(),
69fTrackHypothesys(),
70fBestHypothesys(),
71fOriginal(),
72fCurrentEsdTrack(),
73fPass(0),
74fAfterV0(kFALSE),
75fLastLayerToTrackTo(0),
afd25725 76fCoefficients(0),
8221b41b 77fEsd(0),
e50912db 78fTrackingPhase("Default"),
6518a6c5 79fUseTGeo(3),
e50912db 80fNtracks(0),
81fxOverX0Pipe(-1.),
82fxTimesRhoPipe(-1.),
83fxOverX0PipeTrks(0),
84fxTimesRhoPipeTrks(0),
85fxOverX0ShieldTrks(0),
86fxTimesRhoShieldTrks(0),
87fxOverX0LayerTrks(0),
88fxTimesRhoLayerTrks(0),
4a66240a 89fDebugStreamer(0),
23197852 90fITSChannelStatus(0),
91fDetTypeRec(0),
ae00569a 92fPlaneEff(0) {
8221b41b 93 //Default constructor
e50912db 94 Int_t i;
95 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
96 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
97 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 98}
44347160 99//------------------------------------------------------------------------
1f3e997f 100AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 101fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 102fBestTrack(),
103fTrackToFollow(),
104fTrackHypothesys(),
105fBestHypothesys(),
106fOriginal(),
107fCurrentEsdTrack(),
108fPass(0),
109fAfterV0(kFALSE),
e50912db 110fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 111fCoefficients(0),
8221b41b 112fEsd(0),
e50912db 113fTrackingPhase("Default"),
6518a6c5 114fUseTGeo(3),
e50912db 115fNtracks(0),
116fxOverX0Pipe(-1.),
117fxTimesRhoPipe(-1.),
118fxOverX0PipeTrks(0),
119fxTimesRhoPipeTrks(0),
120fxOverX0ShieldTrks(0),
121fxTimesRhoShieldTrks(0),
122fxOverX0LayerTrks(0),
123fxTimesRhoLayerTrks(0),
4a66240a 124fDebugStreamer(0),
23197852 125fITSChannelStatus(0),
126fDetTypeRec(0),
ae00569a 127fPlaneEff(0) {
e43c066c 128 //--------------------------------------------------------------------
129 //This is the AliITStrackerMI constructor
130 //--------------------------------------------------------------------
e341247d 131 if (geom) {
132 AliWarning("\"geom\" is actually a dummy argument !");
133 }
134
afd25725 135 fCoefficients = 0;
628e7bb0 136 fAfterV0 = kFALSE;
e341247d 137
e50912db 138 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 139 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
140 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
141
142 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
143 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 144 Double_t poff=TMath::ATan2(y,x);
145 Double_t zoff=z;
e341247d 146 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 147
e341247d 148 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 149 r += TMath::Sqrt(x*x + y*y);
e341247d 150 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 151 r += TMath::Sqrt(x*x + y*y);
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
154 r*=0.25;
155
156 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
157
158 for (Int_t j=1; j<nlad+1; j++) {
159 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 160 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 161 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
162 m.Multiply(tm);
a5d0fae6 163 Double_t txyz[3]={0.};
164 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 165 m.LocalToMaster(txyz,xyz);
a5d0fae6 166 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 167 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 168
169 if (phi<0) phi+=TMath::TwoPi();
170 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
171
e43c066c 172 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
173 new(&det) AliITSdetector(r,phi);
1c97ce2f 174 // compute the real radius (with misalignment)
175 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
176 mmisal.Multiply(tm);
177 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
178 mmisal.LocalToMaster(txyz,xyz);
179 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
180 det.SetRmisal(rmisal);
181
23197852 182 } // end loop on detectors
183 } // end loop on ladders
184 } // end loop on layers
e43c066c 185
e43c066c 186
e50912db 187 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 188
189 fPass=0;
190 fConstraint[0]=1; fConstraint[1]=0;
191
afd25725 192 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
193 AliITSReconstructor::GetRecoParam()->GetYVdef(),
194 AliITSReconstructor::GetRecoParam()->GetZVdef()};
195 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
196 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
197 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
198 SetVertex(xyzVtx,ersVtx);
e43c066c 199
e50912db 200 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
201 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 202 for (Int_t i=0;i<100000;i++){
203 fBestTrackIndex[i]=0;
204 }
afd25725 205
206 // store positions of centre of SPD modules (in z)
207 Double_t tr[3];
208 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
209 fSPDdetzcentre[0] = tr[2];
210 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
211 fSPDdetzcentre[1] = tr[2];
212 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
213 fSPDdetzcentre[2] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
215 fSPDdetzcentre[3] = tr[2];
216
afd25725 217 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 218 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
219 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
220 fUseTGeo = 3;
221 }
e50912db 222
223 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
224 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
225
81e97e0d 226 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
227
7167ae53 228 // only for plane efficiency evaluation
229 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff()) {
230 for(Int_t ilay=0;ilay<6;ilay++) {
231 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilay)) {
232 if (ilay<2) fPlaneEff = new AliITSPlaneEffSPD();
233 else if (ilay<4) fPlaneEff = new AliITSPlaneEffSDD();
234 else fPlaneEff = new AliITSPlaneEffSSD();
235 break; // only one layer type to skip at once
236 }
237 }
275a301c 238 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
23197852 239 if(!fPlaneEff->ReadFromCDB())
240 {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
5fbd4fd6 241 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
242 fPlaneEff->SetCreateHistos(kTRUE);
243 //fPlaneEff->ReadHistosFromFile();
244 }
7167ae53 245 }
628e7bb0 246}
44347160 247//------------------------------------------------------------------------
8221b41b 248AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
249fI(tracker.fI),
250fBestTrack(tracker.fBestTrack),
251fTrackToFollow(tracker.fTrackToFollow),
252fTrackHypothesys(tracker.fTrackHypothesys),
253fBestHypothesys(tracker.fBestHypothesys),
254fOriginal(tracker.fOriginal),
255fCurrentEsdTrack(tracker.fCurrentEsdTrack),
256fPass(tracker.fPass),
257fAfterV0(tracker.fAfterV0),
258fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 259fCoefficients(tracker.fCoefficients),
8221b41b 260fEsd(tracker.fEsd),
e50912db 261fTrackingPhase(tracker.fTrackingPhase),
afd25725 262fUseTGeo(tracker.fUseTGeo),
e50912db 263fNtracks(tracker.fNtracks),
264fxOverX0Pipe(tracker.fxOverX0Pipe),
265fxTimesRhoPipe(tracker.fxTimesRhoPipe),
266fxOverX0PipeTrks(0),
267fxTimesRhoPipeTrks(0),
268fxOverX0ShieldTrks(0),
269fxTimesRhoShieldTrks(0),
270fxOverX0LayerTrks(0),
271fxTimesRhoLayerTrks(0),
4a66240a 272fDebugStreamer(tracker.fDebugStreamer),
23197852 273fITSChannelStatus(tracker.fITSChannelStatus),
274fDetTypeRec(tracker.fDetTypeRec),
ae00569a 275fPlaneEff(tracker.fPlaneEff) {
8221b41b 276 //Copy constructor
e50912db 277 Int_t i;
278 for(i=0;i<4;i++) {
279 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
280 }
281 for(i=0;i<6;i++) {
282 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
283 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
284 }
285 for(i=0;i<2;i++) {
286 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
287 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
288 }
8221b41b 289}
44347160 290//------------------------------------------------------------------------
8221b41b 291AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
292 //Assignment operator
293 this->~AliITStrackerMI();
294 new(this) AliITStrackerMI(tracker);
295 return *this;
296}
44347160 297//------------------------------------------------------------------------
628e7bb0 298AliITStrackerMI::~AliITStrackerMI()
299{
300 //
301 //destructor
302 //
e50912db 303 if (fCoefficients) delete [] fCoefficients;
304 DeleteTrksMaterialLUT();
81e97e0d 305 if (fDebugStreamer) {
306 //fDebugStreamer->Close();
307 delete fDebugStreamer;
308 }
23197852 309 if(fITSChannelStatus) delete fITSChannelStatus;
310 if(fPlaneEff) delete fPlaneEff;
e43c066c 311}
44347160 312//------------------------------------------------------------------------
e43c066c 313void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
314 //--------------------------------------------------------------------
315 //This function set masks of the layers which must be not skipped
316 //--------------------------------------------------------------------
e50912db 317 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
e43c066c 318}
44347160 319//------------------------------------------------------------------------
23197852 320void AliITStrackerMI::ReadBadFromDetTypeRec() {
321 //--------------------------------------------------------------------
322 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
323 //i.e. from OCDB
324 //--------------------------------------------------------------------
325
326 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
327
328 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels\n");
329
330 if(!fDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
331
332 // ITS channels map
333 if(fITSChannelStatus) delete fITSChannelStatus;
334 fITSChannelStatus = new AliITSChannelStatus(AliCDBManager::Instance());
335
336 // ITS detectors and chips
337 Int_t i=0,j=0,k=0,ndet=0;
338 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
339 ndet=AliITSgeomTGeo::GetNDetectors(i);
340 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
341 for (k=1; k<ndet+1; k++) {
342 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
343 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fDetTypeRec);
344 } // end loop on detectors
345 } // end loop on ladders
346 } // end loop on layers
347
348 return;
349}
350//------------------------------------------------------------------------
e43c066c 351Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
352 //--------------------------------------------------------------------
353 //This function loads ITS clusters
354 //--------------------------------------------------------------------
00a7cc50 355 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 356 if (!branch) {
357 Error("LoadClusters"," can't get the branch !\n");
358 return 1;
359 }
360
23197852 361 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 362 branch->SetAddress(&clusters);
363
23197852 364 Int_t i=0,j=0,ndet=0;
e43c066c 365 Int_t detector=0;
23197852 366 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
367 ndet=fgLayers[i].GetNdetectors();
e43c066c 368 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
369 for (; j<jmax; j++) {
370 if (!cTree->GetEvent(j)) continue;
371 Int_t ncl=clusters->GetEntriesFast();
372 SignDeltas(clusters,GetZ());
1f3e997f 373
e43c066c 374 while (ncl--) {
00a7cc50 375 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 376 detector=c->GetDetectorIndex();
a504d56f 377
75fb37cc 378 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 379
00a7cc50 380 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 381 }
382 clusters->Delete();
afd25725 383 // add dead zone "virtual" cluster in SPD, if there is a cluster within
384 // zwindow cm from the dead zone
385 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 386 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 387 Int_t lab[4] = {0,0,0,detector};
388 Int_t info[3] = {0,0,i};
6518a6c5 389 Float_t q = 0.; // this identifies virtual clusters
afd25725 390 Float_t hit[5] = {xdead,
391 0.,
392 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
393 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
394 q};
395 Bool_t local = kTRUE;
396 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 397 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 398 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
399 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 400 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 401 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
402 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 403 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 404 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
405 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 406 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 407 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
408 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 409 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 410 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
411 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 412 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 413 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
414 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 415 }
6518a6c5 416 } // "virtual" clusters in SPD
e43c066c 417
418 }
419 //
420 fgLayers[i].ResetRoad(); //road defined by the cluster density
421 fgLayers[i].SortClusters();
422 }
423
23197852 424 dummy.Clear();
425
e43c066c 426 return 0;
427}
44347160 428//------------------------------------------------------------------------
e43c066c 429void AliITStrackerMI::UnloadClusters() {
430 //--------------------------------------------------------------------
431 //This function unloads ITS clusters
432 //--------------------------------------------------------------------
e50912db 433 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 434}
44347160 435//------------------------------------------------------------------------
23197852 436void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
437 //--------------------------------------------------------------------
438 // Publishes all pointers to clusters known to the tracker into the
439 // passed object array.
440 // The ownership is not transfered - the caller is not expected to delete
441 // the clusters.
442 //--------------------------------------------------------------------
443
444 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
445 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
446 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
447 array->AddLast(cl);
448 }
449 }
450
451 return;
452}
453//------------------------------------------------------------------------
afd25725 454static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 455 //--------------------------------------------------------------------
456 // Correction for the material between the TPC and the ITS
e43c066c 457 //--------------------------------------------------------------------
e50912db 458 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
459 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
460 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
462 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
463 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
464 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 466 } else {
afd25725 467 Error("CorrectForTPCtoITSDeadZoneMaterial","Track is already in the dead zone !");
e50912db 468 return 0;
e43c066c 469 }
470
e50912db 471 return 1;
e43c066c 472}
44347160 473//------------------------------------------------------------------------
af885e0f 474Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 475 //--------------------------------------------------------------------
476 // This functions reconstructs ITS tracks
477 // The clusters must be already loaded !
478 //--------------------------------------------------------------------
fddf8459 479
480
e50912db 481 fTrackingPhase="Clusters2Tracks";
482
e43c066c 483 TObjArray itsTracks(15000);
628e7bb0 484 fOriginal.Clear();
81e97e0d 485 fEsd = event; // store pointer to the esd
afd25725 486
9a5326b1 487 // temporary (for cosmics)
488 if(event->GetVertex()) {
489 TString title = event->GetVertex()->GetTitle();
490 if(title.Contains("cosmics")) {
491 Double_t xyz[3]={GetX(),GetY(),GetZ()};
492 Double_t exyz[3]={0.1,0.1,0.1};
493 SetVertex(xyz,exyz);
494 }
495 }
496 // temporary
afd25725 497
e43c066c 498 {/* Read ESD tracks */
afd25725 499 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 500 Int_t nentr=event->GetNumberOfTracks();
501 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
502 while (nentr--) {
503 AliESDtrack *esd=event->GetTrack(nentr);
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
575 fI = 6;
576 ResetTrackToFollow(*t);
577 ResetBestTrack();
6518a6c5 578
e50912db 579 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 580
e43c066c 581
582 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
583 //
ae00569a 584 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 585 if (!besttrack) continue;
586 besttrack->SetLabel(tpcLabel);
587 // besttrack->CookdEdx();
588 CookdEdx(besttrack);
b9671574 589 besttrack->SetFakeRatio(1.);
e43c066c 590 CookLabel(besttrack,0.); //For comparison only
e43c066c 591 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 592
628e7bb0 593 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
594
b9671574 595 t->SetReconstructed(kTRUE);
1c97ce2f 596 ntrk++;
e43c066c 597 }
598 GetBestHypothesysMIP(itsTracks);
afd25725 599 } // end loop on the two tracking passes
e43c066c 600
afd25725 601 if(event->GetNumberOfV0s()>0) UpdateTPCV0(event);
602 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) FindV02(event);
628e7bb0 603 fAfterV0 = kTRUE;
628e7bb0 604 //
e43c066c 605 itsTracks.Delete();
606 //
607 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 608 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 609 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
610 if (array) array->Delete();
611 delete fTrackHypothesys.RemoveAt(ientry);
612 }
613
614 fTrackHypothesys.Delete();
81e97e0d 615 fBestHypothesys.Delete();
628e7bb0 616 fOriginal.Clear();
afd25725 617 delete [] fCoefficients;
618 fCoefficients=0;
e50912db 619 DeleteTrksMaterialLUT();
620
e43c066c 621 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 622
623 fTrackingPhase="Default";
628e7bb0 624
e43c066c 625 return 0;
626}
44347160 627//------------------------------------------------------------------------
af885e0f 628Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 629 //--------------------------------------------------------------------
630 // This functions propagates reconstructed ITS tracks back
631 // The clusters must be loaded !
632 //--------------------------------------------------------------------
e50912db 633 fTrackingPhase="PropagateBack";
e43c066c 634 Int_t nentr=event->GetNumberOfTracks();
635 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
636
637 Int_t ntrk=0;
638 for (Int_t i=0; i<nentr; i++) {
639 AliESDtrack *esd=event->GetTrack(i);
640
641 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
642 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
643
15dd636f 644 AliITStrackMI *t=0;
e43c066c 645 try {
15dd636f 646 t=new AliITStrackMI(*esd);
e43c066c 647 } catch (const Char_t *msg) {
628e7bb0 648 //Warning("PropagateBack",msg);
e43c066c 649 delete t;
650 continue;
651 }
b9671574 652 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 653
654 ResetTrackToFollow(*t);
655
9a5326b1 656 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 657 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 658 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
659 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
660 fTrackToFollow.StartTimeIntegral();
661 // from vertex to outside pipe
662 CorrectForPipeMaterial(&fTrackToFollow,"outward");
e43c066c 663 }
664
6c94f330 665 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 666 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
667 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 668 delete t;
669 continue;
670 }
671 fTrackToFollow.SetLabel(t->GetLabel());
672 //fTrackToFollow.CookdEdx();
673 CookLabel(&fTrackToFollow,0.); //For comparison only
674 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
675 //UseClusters(&fTrackToFollow);
676 ntrk++;
677 }
678 delete t;
679 }
680
681 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
682
e50912db 683 fTrackingPhase="Default";
684
e43c066c 685 return 0;
686}
44347160 687//------------------------------------------------------------------------
af885e0f 688Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 689 //--------------------------------------------------------------------
690 // This functions refits ITS tracks using the
691 // "inward propagated" TPC tracks
692 // The clusters must be loaded !
693 //--------------------------------------------------------------------
e50912db 694 fTrackingPhase="RefitInward";
afd25725 695 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) RefitV02(event);
e43c066c 696 Int_t nentr=event->GetNumberOfTracks();
697 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
698
699 Int_t ntrk=0;
700 for (Int_t i=0; i<nentr; i++) {
701 AliESDtrack *esd=event->GetTrack(i);
702
703 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
704 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
705 if (esd->GetStatus()&AliESDtrack::kTPCout)
706 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
707
15dd636f 708 AliITStrackMI *t=0;
e43c066c 709 try {
15dd636f 710 t=new AliITStrackMI(*esd);
e43c066c 711 } catch (const Char_t *msg) {
628e7bb0 712 //Warning("RefitInward",msg);
e43c066c 713 delete t;
714 continue;
715 }
b9671574 716 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 717 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 718 delete t;
719 continue;
720 }
721
722 ResetTrackToFollow(*t);
723 fTrackToFollow.ResetClusters();
724
725 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 726 fTrackToFollow.ResetCovariance(10.);
e43c066c 727
728 //Refitting...
7167ae53 729 Bool_t pe=AliITSReconstructor::GetRecoParam()->GetComputePlaneEff();
730 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
e43c066c 731 fTrackToFollow.SetLabel(t->GetLabel());
732 // fTrackToFollow.CookdEdx();
733 CookdEdx(&fTrackToFollow);
734
735 CookLabel(&fTrackToFollow,0.0); //For comparison only
736
9a5326b1 737 //The beam pipe
e50912db 738 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 739 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 740 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 741 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
742 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
9a5326b1 743 Float_t r[3]={0.,0.,0.};
744 Double_t maxD=3.;
745 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
746 ntrk++;
e43c066c 747 }
748 }
749 delete t;
750 }
751
752 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
753
e50912db 754 fTrackingPhase="Default";
755
e43c066c 756 return 0;
757}
44347160 758//------------------------------------------------------------------------
e43c066c 759AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
760 //--------------------------------------------------------------------
761 // Return pointer to a given cluster
762 //--------------------------------------------------------------------
763 Int_t l=(index & 0xf0000000) >> 28;
764 Int_t c=(index & 0x0fffffff) >> 00;
765 return fgLayers[l].GetCluster(c);
766}
9a5326b1 767//------------------------------------------------------------------------
df29e9a4 768Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 769 //--------------------------------------------------------------------
df29e9a4 770 // Get track space point with index i
9a5326b1 771 //--------------------------------------------------------------------
60066577 772
78b03929 773 Int_t l=(index & 0xf0000000) >> 28;
774 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 775 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 776 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 777
60066577 778 Float_t xyz[3];
779 Float_t cov[6];
780 cl->GetGlobalXYZ(xyz);
781 cl->GetGlobalCov(cov);
782 p.SetXYZ(xyz, cov);
4e65ff9e 783
ae079791 784 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 785 switch (l) {
786 case 0:
ae079791 787 iLayer = AliGeomManager::kSPD1;
df29e9a4 788 break;
789 case 1:
ae079791 790 iLayer = AliGeomManager::kSPD2;
df29e9a4 791 break;
792 case 2:
ae079791 793 iLayer = AliGeomManager::kSDD1;
df29e9a4 794 break;
795 case 3:
ae079791 796 iLayer = AliGeomManager::kSDD2;
9a5326b1 797 break;
798 case 4:
799 iLayer = AliGeomManager::kSSD1;
800 break;
801 case 5:
802 iLayer = AliGeomManager::kSSD2;
803 break;
804 default:
805 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
806 break;
807 };
808 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
809 p.SetVolumeID((UShort_t)volid);
810 return kTRUE;
811}
812//------------------------------------------------------------------------
813Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
814 AliTrackPoint& p, const AliESDtrack *t) {
815 //--------------------------------------------------------------------
816 // Get track space point with index i
817 // (assign error estimated during the tracking)
818 //--------------------------------------------------------------------
819
820 Int_t l=(index & 0xf0000000) >> 28;
821 Int_t c=(index & 0x0fffffff) >> 00;
822 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
823 Int_t idet = cl->GetDetectorIndex();
824 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
825
826 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
827 Float_t detxy[2];
828 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
829 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
830 Double_t alpha = t->GetAlpha();
831 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
832 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
833 phi += alpha-det.GetPhi();
834 Float_t tgphi = TMath::Tan(phi);
835
836 Float_t tgl = t->GetTgl(); // tgl about const along track
837 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
838
839 Float_t errlocalx,errlocalz;
8c139cf3 840 Bool_t addMisalErr=kFALSE;
841 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz,addMisalErr);
9a5326b1 842
843 Float_t xyz[3];
844 Float_t cov[6];
845 cl->GetGlobalXYZ(xyz);
846 // cl->GetGlobalCov(cov);
847 Float_t pos[3] = {0.,0.,0.};
848 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
849 tmpcl.GetGlobalCov(cov);
850
851 p.SetXYZ(xyz, cov);
852
853 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
854 switch (l) {
855 case 0:
856 iLayer = AliGeomManager::kSPD1;
857 break;
858 case 1:
859 iLayer = AliGeomManager::kSPD2;
860 break;
861 case 2:
862 iLayer = AliGeomManager::kSDD1;
863 break;
864 case 3:
865 iLayer = AliGeomManager::kSDD2;
df29e9a4 866 break;
867 case 4:
ae079791 868 iLayer = AliGeomManager::kSSD1;
df29e9a4 869 break;
870 case 5:
ae079791 871 iLayer = AliGeomManager::kSSD2;
df29e9a4 872 break;
873 default:
874 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
875 break;
876 };
ae079791 877 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
df29e9a4 878 p.SetVolumeID((UShort_t)volid);
879 return kTRUE;
880}
44347160 881//------------------------------------------------------------------------
81e97e0d 882void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 883{
884 //--------------------------------------------------------------------
885 // Follow prolongation tree
886 //--------------------------------------------------------------------
81e97e0d 887 //
afd25725 888 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
889 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
890
2755f080 891
b9671574 892 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 893 if (esd->GetV0Index(0)>0) {
81e97e0d 894 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 895 // mapping of ESD track is different as ITS track in Containers
81e97e0d 896 // Need something more stable
44347160 897 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 898 for (Int_t i=0;i<3;i++){
899 Int_t index = esd->GetV0Index(i);
900 if (index==0) break;
d6a49f20 901 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 902 if (vertex->GetStatus()<0) continue; // rejected V0
903 //
afd25725 904 if (esd->GetSign()>0) {
905 vertex->SetIndex(0,esdindex);
906 } else {
907 vertex->SetIndex(1,esdindex);
908 }
81e97e0d 909 }
910 }
911 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
912 if (!bestarray){
913 bestarray = new TObjArray(5);
914 fBestHypothesys.AddAt(bestarray,esdindex);
915 }
e43c066c 916
81e97e0d 917 //
e43c066c 918 //setup tree of the prolongations
919 //
15dd636f 920 static AliITStrackMI tracks[7][100];
921 AliITStrackMI *currenttrack;
922 static AliITStrackMI currenttrack1;
923 static AliITStrackMI currenttrack2;
924 static AliITStrackMI backuptrack;
e43c066c 925 Int_t ntracks[7];
926 Int_t nindexes[7][100];
927 Float_t normalizedchi2[100];
928 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 929 otrack->SetNSkipped(0);
15dd636f 930 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 931 ntracks[6]=1;
81e97e0d 932 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 933 Int_t modstatus = 1; // found
934 Float_t xloc,zloc;
e43c066c 935 //
936 //
937 // follow prolongations
e50912db 938 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
1c97ce2f 939 //printf("FollowProlongationTree: layer %d\n",ilayer);
2755f080 940 fI = ilayer;
e43c066c 941 //
2755f080 942 AliITSlayer &layer=fgLayers[ilayer];
943 Double_t r = layer.GetR();
e43c066c 944 ntracks[ilayer]=0;
945 //
946 //
2755f080 947 Int_t nskipped=0;
e43c066c 948 Float_t nused =0;
e50912db 949 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 950 //set current track
951 if (ntracks[ilayer]>=100) break;
b9671574 952 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
953 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 954 if (ntracks[ilayer]>15+ilayer){
b9671574 955 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
956 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 957 }
958
15dd636f 959 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 960
afd25725 961 // material between SSD and SDD, SDD and SPD
e50912db 962 if (ilayer==3)
963 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
964 if (ilayer==1)
965 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 966
2755f080 967 // detector number
8602c008 968 Double_t phi,z;
969 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 970 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 971
972 Double_t trackGlobXYZ1[3];
973 currenttrack1.GetXYZ(trackGlobXYZ1);
974
2755f080 975 // Get the budget to the primary vertex for the current track being prolonged
976 Double_t budgetToPrimVertex = GetEffectiveThickness();
977
978 // check if we allow a prolongation without point
6518a6c5 979 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 980 if (skip) {
981 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 982 // propagate to the layer radius
983 Double_t xToGo; vtrack->GetLocalXat(r,xToGo);
984 vtrack->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
2755f080 985 // apply correction for material of the current layer
986 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
987 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
988 vtrack->SetClIndex(ilayer,0);
ae00569a 989 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
990 LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc); // local module coords
991 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2755f080 992 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
993 ntracks[ilayer]++;
6518a6c5 994 continue;
2755f080 995 }
996
997 // track outside layer acceptance in z
998 if (idet<0) continue;
999
1000 //propagate to the intersection with the detector plane
1001 const AliITSdetector &det=layer.GetDetector(idet);
1002 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1003 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
1004 currenttrack2.Propagate(det.GetPhi(),det.GetR());
e43c066c 1005 currenttrack1.SetDetectorIndex(idet);
1006 currenttrack2.SetDetectorIndex(idet);
1c97ce2f 1007 LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc); // local module coords
6518a6c5 1008
afd25725 1009 //***************
1c97ce2f 1010 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1011 //
2755f080 1012 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1013 Double_t zmin,zmax,ymin,ymax;
1014 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1015
afd25725 1016 // select clusters in road
e43c066c 1017 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1018 //********************
44347160 1019
afd25725 1020 // Define criteria for track-cluster association
44347160 1021 Double_t msz = currenttrack1.GetSigmaZ2() +
1022 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1023 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1024 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1025 Double_t msy = currenttrack1.GetSigmaY2() +
1026 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1027 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1028 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1029 if (constrain) {
1030 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1031 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1032 } else {
1033 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1034 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1035 }
1036 msz = 1./msz; // 1/RoadZ^2
1037 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1038
e43c066c 1039 //
e43c066c 1040 //
afd25725 1041 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1042 //
afd25725 1043 const AliITSRecPoint *cl=0;
1044 Int_t clidx=-1;
1045 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1046 Bool_t deadzoneSPD=kFALSE;
e43c066c 1047 currenttrack = &currenttrack1;
6518a6c5 1048
ae00569a 1049 // check if the road contains a dead zone
23197852 1050 Bool_t noClusters = kFALSE;
1051 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1c97ce2f 1052 //if (noClusters) printf("no clusters in road\n");
1053 Double_t dz=0.5*(zmax-zmin);
1054 Double_t dy=0.5*(ymax-ymin);
1055 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
ae00569a 1056 // create a prolongation without clusters (check also if there are no clusters in the road)
1057 if (dead ||
23197852 1058 (noClusters &&
ae00569a 1059 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1060 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1061 updatetrack->SetClIndex(ilayer,0);
ae00569a 1062 if (dead==0) {
1063 modstatus = 5; // no cls in road
1064 } else if (dead==1) {
1065 modstatus = 7; // holes in z in SPD
23197852 1066 } else if (dead==2 || dead==3) {
ae00569a 1067 modstatus = 2; // dead from OCDB
1068 }
1069 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1070 // apply correction for material of the current layer
1071 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1072 if (constrain) { // apply vertex constrain
1073 updatetrack->SetConstrain(constrain);
1074 Bool_t isPrim = kTRUE;
1075 if (ilayer<4) { // check that it's close to the vertex
1076 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1077 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1078 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1079 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1080 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1081 }
1082 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1083 }
ae00569a 1084 if (dead) {
1085 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1086 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1087 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1088 deadzoneSPD=kTRUE;
1089 }
6518a6c5 1090 }
1091 ntracks[ilayer]++;
1092 }
1093
ae00569a 1094 clidx=-1;
6518a6c5 1095 // loop over clusters in the road
afd25725 1096 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1097 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1098 Bool_t changedet =kFALSE;
6518a6c5 1099 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1100 Int_t idetc=cl->GetDetectorIndex();
afd25725 1101
a5d0fae6 1102 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1103 // take into account misalignment (bring track to real detector plane)
1104 Double_t xTrOrig = currenttrack->GetX();
1105 currenttrack->PropagateTo(xTrOrig+cl->GetX(),0.,0.);
afd25725 1106 // a first cut on track-cluster distance
1107 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1108 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1109 { // cluster not associated to track
1110 //printf("not ass\n");
1111 continue;
1112 }
1113 // bring track back to ideal detector plane
1114 currenttrack->PropagateTo(xTrOrig,0.,0.);
afd25725 1115 } else { // have to move track to cluster's detector
a5d0fae6 1116 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1117 // a first cut on track-cluster distance
a5d0fae6 1118 Double_t y;
1c97ce2f 1119 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1120 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1121 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1122 continue; // cluster not associated to track
e43c066c 1123 //
15dd636f 1124 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1125 changedet = kTRUE;
e43c066c 1126 currenttrack =&currenttrack2;
a5d0fae6 1127 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1128 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1129 changedet = kFALSE;
e43c066c 1130 continue;
1131 }
a5d0fae6 1132 currenttrack->SetDetectorIndex(idetc);
e50912db 1133 // Get again the budget to the primary vertex
1134 // for the current track being prolonged, if had to change detector
1135 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1136 }
1137
afd25725 1138 // calculate track-clusters chi2
1139 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1140 // chi2 cut
1c97ce2f 1141 //printf("chi2 %f max %f\n",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer));
afd25725 1142 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1143 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1144 if (ntracks[ilayer]>=100) continue;
15dd636f 1145 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
b9671574 1146 updatetrack->SetClIndex(ilayer,0);
afd25725 1147 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1148
6518a6c5 1149 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1150 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1151 //printf("update failed\n");
1152 continue;
1153 }
afd25725 1154 updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
ae00569a 1155 modstatus = 1; // found
6518a6c5 1156 } else { // virtual cluster in dead zone
b9671574 1157 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
6518a6c5 1158 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1159 modstatus = 7; // holes in z in SPD
1160 }
1161
1162 if (changedet) {
1163 Float_t xlocnewdet,zlocnewdet;
1164 LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet); // local module coords
1165 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1166 } else {
1167 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1168 }
afd25725 1169 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1170
1171 // apply correction for material of the current layer
e50912db 1172 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1173
afd25725 1174 if (constrain) { // apply vertex constrain
b9671574 1175 updatetrack->SetConstrain(constrain);
e43c066c 1176 Bool_t isPrim = kTRUE;
afd25725 1177 if (ilayer<4) { // check that it's close to the vertex
b9671574 1178 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1179 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1180 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1181 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1182 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1183 }
afd25725 1184 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1185 } //apply vertex constrain
1186 ntracks[ilayer]++;
afd25725 1187 } // create new hypothesis
1c97ce2f 1188 //else printf("chi2 too large\n");
2755f080 1189 } // loop over possible prolongations
1190
1191 // allow one prolongation without clusters
6518a6c5 1192 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1193 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1194 // apply correction for material of the current layer
1195 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1196 vtrack->SetClIndex(ilayer,0);
ae00569a 1197 modstatus = 3; // skipped
1198 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1199 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1200 vtrack->IncrementNSkipped();
e43c066c 1201 ntracks[ilayer]++;
1202 }
628e7bb0 1203
2755f080 1204 // allow one prolongation without clusters for tracks with |tgl|>1.1
1205 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1206 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1207 // apply correction for material of the current layer
1208 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
b9671574 1209 vtrack->SetClIndex(ilayer,0);
ae00569a 1210 modstatus = 3; // skipped
1211 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1212 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1213 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1214 ntracks[ilayer]++;
1215 }
1216
e43c066c 1217
e50912db 1218 } // loop over tracks in layer ilayer+1
afd25725 1219
1220 //loop over track candidates for the current layer
e43c066c 1221 //
1222 //
1223 Int_t accepted=0;
1224
afd25725 1225 Int_t golden=0;
e43c066c 1226 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1227 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1228 if (normalizedchi2[itrack] <
1229 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1230 if (ilayer>4) {
1231 accepted++;
1232 } else {
1233 if (constrain) { // constrain
afd25725 1234 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1235 accepted++;
44347160 1236 } else { // !constrain
afd25725 1237 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1238 accepted++;
44347160 1239 }
e43c066c 1240 }
1241 }
afd25725 1242 // sort tracks by increasing normalized chi2
1243 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1244 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1245 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1246 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1247 } // end loop over layers
1248
afd25725 1249
1250 //
1251 // Now select tracks to be kept
1252 //
44347160 1253 Int_t max = constrain ? 20 : 5;
e43c066c 1254
afd25725 1255 // tracks that reach layer 0 (SPD inner)
44347160 1256 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1257 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1258 if (track.GetNumberOfClusters()<2) continue;
afd25725 1259 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1260 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1261 continue;
1262 }
15dd636f 1263 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1264 }
afd25725 1265
1266 // tracks that reach layer 1 (SPD outer)
628e7bb0 1267 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1268 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1269 if (track.GetNumberOfClusters()<4) continue;
afd25725 1270 if (!constrain && track.GetNormChi2(1) >
1271 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1272 if (constrain) track.IncrementNSkipped();
81e97e0d 1273 if (!constrain) {
b9671574 1274 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1275 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1276 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1277 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1278 }
1279 }
15dd636f 1280 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1281 }
afd25725 1282
6518a6c5 1283 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1284 if (!constrain){
628e7bb0 1285 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1286 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1287 if (track.GetNumberOfClusters()<3) continue;
afd25725 1288 if (!constrain && track.GetNormChi2(2) >
1289 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1290 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1291 if (!constrain){
b9671574 1292 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1293 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1294 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1295 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1296 }
1297 }
15dd636f 1298 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1299 }
1300 }
81e97e0d 1301
afd25725 1302 if (!constrain) {
81e97e0d 1303 //
afd25725 1304 // register best track of each layer - important for V0 finder
81e97e0d 1305 //
1306 for (Int_t ilayer=0;ilayer<5;ilayer++){
1307 if (ntracks[ilayer]==0) continue;
1308 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1309 if (track.GetNumberOfClusters()<1) continue;
1310 CookLabel(&track,0);
1311 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1312 }
1313 }
1314 //
1315 // update TPC V0 information
1316 //
b9671574 1317 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1318 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1319 for (Int_t i=0;i<3;i++){
b9671574 1320 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1321 if (index==0) break;
44347160 1322 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1323 if (vertex->GetStatus()<0) continue; // rejected V0
1324 //
6c94f330 1325 if (otrack->GetSign()>0) {
81e97e0d 1326 vertex->SetIndex(0,esdindex);
1327 }
1328 else{
1329 vertex->SetIndex(1,esdindex);
1330 }
1331 //find nearest layer with track info
b75d63a7 1332 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1333 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1334 Int_t nearest = nearestold;
1335 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1336 if (ntracks[nearest]==0){
1337 nearest = ilayer;
1338 }
1339 }
1340 //
1341 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1342 if (nearestold<5&&nearest<5){
b9671574 1343 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1344 if (accept){
6c94f330 1345 if (track.GetSign()>0) {
b75d63a7 1346 vertex->SetParamP(track);
81e97e0d 1347 vertex->Update(fprimvertex);
44347160 1348 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1349 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1350 }else{
b75d63a7 1351 vertex->SetParamN(track);
81e97e0d 1352 vertex->Update(fprimvertex);
1353 //vertex->SetIndex(1,track.fESDtrack->GetID());
1354 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1355 }
1356 vertex->SetStatus(vertex->GetStatus()+1);
1357 }else{
44347160 1358 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1359 }
1360 }
81e97e0d 1361 }
afd25725 1362 }
1363
e43c066c 1364}
44347160 1365//------------------------------------------------------------------------
e43c066c 1366AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1367{
1368 //--------------------------------------------------------------------
1369 //
1370 //
1371 return fgLayers[layer];
1372}
44347160 1373//------------------------------------------------------------------------
8221b41b 1374AliITStrackerMI::AliITSlayer::AliITSlayer():
1375fR(0),
1376fPhiOffset(0),
1377fNladders(0),
1378fZOffset(0),
1379fNdetectors(0),
1380fDetectors(0),
1381fN(0),
1382fDy5(0),
1383fDy10(0),
1384fDy20(0),
1385fClustersCs(0),
1386fClusterIndexCs(0),
1387fYcs(0),
1388fZcs(0),
1389fNcs(0),
1390fCurrentSlice(-1),
1391fZmax(0),
1392fYmin(0),
1393fYmax(0),
1394fI(0),
1395fImax(0),
1396fSkip(0),
1397fAccepted(0),
1398fRoad(0){
e43c066c 1399 //--------------------------------------------------------------------
1400 //default AliITSlayer constructor
1401 //--------------------------------------------------------------------
e50912db 1402 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1403 fClusterWeight[i]=0;
1404 fClusterTracks[0][i]=-1;
1405 fClusterTracks[1][i]=-1;
1406 fClusterTracks[2][i]=-1;
1407 fClusterTracks[3][i]=-1;
1408 }
1409}
44347160 1410//------------------------------------------------------------------------
e43c066c 1411AliITStrackerMI::AliITSlayer::
8221b41b 1412AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1413fR(r),
1414fPhiOffset(p),
1415fNladders(nl),
1416fZOffset(z),
1417fNdetectors(nd),
1418fDetectors(0),
1419fN(0),
1420fDy5(0),
1421fDy10(0),
1422fDy20(0),
1423fClustersCs(0),
1424fClusterIndexCs(0),
1425fYcs(0),
1426fZcs(0),
1427fNcs(0),
1428fCurrentSlice(-1),
1429fZmax(0),
1430fYmin(0),
1431fYmax(0),
1432fI(0),
1433fImax(0),
1434fSkip(0),
1435fAccepted(0),
1436fRoad(0) {
e43c066c 1437 //--------------------------------------------------------------------
1438 //main AliITSlayer constructor
1439 //--------------------------------------------------------------------
e43c066c 1440 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1441 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1442}
44347160 1443//------------------------------------------------------------------------
8221b41b 1444AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1445fR(layer.fR),
1446fPhiOffset(layer.fPhiOffset),
1447fNladders(layer.fNladders),
1448fZOffset(layer.fZOffset),
1449fNdetectors(layer.fNdetectors),
1450fDetectors(layer.fDetectors),
1451fN(layer.fN),
1452fDy5(layer.fDy5),
1453fDy10(layer.fDy10),
1454fDy20(layer.fDy20),
1455fClustersCs(layer.fClustersCs),
1456fClusterIndexCs(layer.fClusterIndexCs),
1457fYcs(layer.fYcs),
1458fZcs(layer.fZcs),
1459fNcs(layer.fNcs),
1460fCurrentSlice(layer.fCurrentSlice),
1461fZmax(layer.fZmax),
1462fYmin(layer.fYmin),
1463fYmax(layer.fYmax),
1464fI(layer.fI),
1465fImax(layer.fImax),
1466fSkip(layer.fSkip),
1467fAccepted(layer.fAccepted),
1468fRoad(layer.fRoad){
1469 //Copy constructor
1470}
44347160 1471//------------------------------------------------------------------------
e43c066c 1472AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1473 //--------------------------------------------------------------------
1474 // AliITSlayer destructor
1475 //--------------------------------------------------------------------
23197852 1476 delete [] fDetectors;
e43c066c 1477 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1478 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1479 fClusterWeight[i]=0;
1480 fClusterTracks[0][i]=-1;
1481 fClusterTracks[1][i]=-1;
1482 fClusterTracks[2][i]=-1;
1483 fClusterTracks[3][i]=-1;
1484 }
1485}
44347160 1486//------------------------------------------------------------------------
e43c066c 1487void AliITStrackerMI::AliITSlayer::ResetClusters() {
1488 //--------------------------------------------------------------------
1489 // This function removes loaded clusters
1490 //--------------------------------------------------------------------
1491 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1492 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1493 fClusterWeight[i]=0;
1494 fClusterTracks[0][i]=-1;
1495 fClusterTracks[1][i]=-1;
1496 fClusterTracks[2][i]=-1;
1497 fClusterTracks[3][i]=-1;
1498 }
1499
1500 fN=0;
1501 fI=0;
1502}
44347160 1503//------------------------------------------------------------------------
e43c066c 1504void AliITStrackerMI::AliITSlayer::ResetWeights() {
1505 //--------------------------------------------------------------------
1506 // This function reset weights of the clusters
1507 //--------------------------------------------------------------------
e50912db 1508 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1509 fClusterWeight[i]=0;
1510 fClusterTracks[0][i]=-1;
1511 fClusterTracks[1][i]=-1;
1512 fClusterTracks[2][i]=-1;
1513 fClusterTracks[3][i]=-1;
1514 }
1515 for (Int_t i=0; i<fN;i++) {
00a7cc50 1516 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1517 if (cl&&cl->IsUsed()) cl->Use();
1518 }
1519
1520}
44347160 1521//------------------------------------------------------------------------
e43c066c 1522void AliITStrackerMI::AliITSlayer::ResetRoad() {
1523 //--------------------------------------------------------------------
1524 // This function calculates the road defined by the cluster density
1525 //--------------------------------------------------------------------
1526 Int_t n=0;
1527 for (Int_t i=0; i<fN; i++) {
1528 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1529 }
afd25725 1530 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1531}
44347160 1532//------------------------------------------------------------------------
afd25725 1533Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1534 //--------------------------------------------------------------------
1535 //This function adds a cluster to this layer
1536 //--------------------------------------------------------------------
e50912db 1537 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1538 ::Error("InsertCluster","Too many clusters !\n");
1539 return 1;
1540 }
1541 fCurrentSlice=-1;
afd25725 1542 fClusters[fN]=cl;
1d4090b7 1543 fN++;
afd25725 1544 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1545 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1546 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1547 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1548 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1549
1550 return 0;
1551}
44347160 1552//------------------------------------------------------------------------
e43c066c 1553void AliITStrackerMI::AliITSlayer::SortClusters()
1554{
1555 //
1556 //sort clusters
1557 //
00a7cc50 1558 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1559 Float_t *z = new Float_t[fN];
1560 Int_t * index = new Int_t[fN];
1561 //
1562 for (Int_t i=0;i<fN;i++){
1563 z[i] = fClusters[i]->GetZ();
1564 }
1565 TMath::Sort(fN,z,index,kFALSE);
1566 for (Int_t i=0;i<fN;i++){
1567 clusters[i] = fClusters[index[i]];
1568 }
1569 //
1570 for (Int_t i=0;i<fN;i++){
1571 fClusters[i] = clusters[i];
1572 fZ[i] = fClusters[i]->GetZ();
1573 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1574 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1575 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1576 fY[i] = y;
1577 }
1578 delete[] index;
1579 delete[] z;
1580 delete[] clusters;
1581 //
1582
e43c066c 1583 fYB[0]=10000000;
1584 fYB[1]=-10000000;
1585 for (Int_t i=0;i<fN;i++){
1586 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1587 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1588 fClusterIndex[i] = i;
1589 }
1590 //
1591 // fill slices
1592 fDy5 = (fYB[1]-fYB[0])/5.;
1593 fDy10 = (fYB[1]-fYB[0])/10.;
1594 fDy20 = (fYB[1]-fYB[0])/20.;
1595 for (Int_t i=0;i<6;i++) fN5[i] =0;
1596 for (Int_t i=0;i<11;i++) fN10[i]=0;
1597 for (Int_t i=0;i<21;i++) fN20[i]=0;
1598 //
1599 for (Int_t i=0;i<6;i++) {fBy5[i][0] = fYB[0]+(i-0.75)*fDy5; fBy5[i][1] = fYB[0]+(i+0.75)*fDy5;}
1600 for (Int_t i=0;i<11;i++) {fBy10[i][0] = fYB[0]+(i-0.75)*fDy10; fBy10[i][1] = fYB[0]+(i+0.75)*fDy10;}
1601 for (Int_t i=0;i<21;i++) {fBy20[i][0] = fYB[0]+(i-0.75)*fDy20; fBy20[i][1] = fYB[0]+(i+0.75)*fDy20;}
1602 //
1603 //
1d4090b7 1604 for (Int_t i=0;i<fN;i++)
1605 for (Int_t irot=-1;irot<=1;irot++){
1606 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1607 // slice 5
1608 for (Int_t slice=0; slice<6;slice++){
e50912db 1609 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1610 fClusters5[slice][fN5[slice]] = fClusters[i];
1611 fY5[slice][fN5[slice]] = curY;
1612 fZ5[slice][fN5[slice]] = fZ[i];
1613 fClusterIndex5[slice][fN5[slice]]=i;
1614 fN5[slice]++;
1615 }
e43c066c 1616 }
1d4090b7 1617 // slice 10
1618 for (Int_t slice=0; slice<11;slice++){
e50912db 1619 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1620 fClusters10[slice][fN10[slice]] = fClusters[i];
1621 fY10[slice][fN10[slice]] = curY;
1622 fZ10[slice][fN10[slice]] = fZ[i];
1623 fClusterIndex10[slice][fN10[slice]]=i;
1624 fN10[slice]++;
1625 }
e43c066c 1626 }
1d4090b7 1627 // slice 20
1628 for (Int_t slice=0; slice<21;slice++){
e50912db 1629 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1630 fClusters20[slice][fN20[slice]] = fClusters[i];
1631 fY20[slice][fN20[slice]] = curY;
1632 fZ20[slice][fN20[slice]] = fZ[i];
1633 fClusterIndex20[slice][fN20[slice]]=i;
1634 fN20[slice]++;
1635 }
1636 }
e43c066c 1637 }
1d4090b7 1638
1639 //
1640 // consistency check
1641 //
1642 for (Int_t i=0;i<fN-1;i++){
1643 if (fZ[i]>fZ[i+1]){
ae00569a 1644 printf("Bug\n");
e43c066c 1645 }
1646 }
1d4090b7 1647 //
1648 for (Int_t slice=0;slice<21;slice++)
1649 for (Int_t i=0;i<fN20[slice]-1;i++){
1650 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1651 printf("Bug\n");
1d4090b7 1652 }
1653 }
1654
1655
e43c066c 1656}
44347160 1657//------------------------------------------------------------------------
e43c066c 1658Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1659 //--------------------------------------------------------------------
1660 // This function returns the index of the nearest cluster
1661 //--------------------------------------------------------------------
1662 Int_t ncl=0;
1663 const Float_t *zcl;
1664 if (fCurrentSlice<0) {
1665 ncl = fN;
1666 zcl = fZ;
1667 }
1668 else{
1669 ncl = fNcs;
1670 zcl = fZcs;;
1671 }
1672
1673 if (ncl==0) return 0;
1674 Int_t b=0, e=ncl-1, m=(b+e)/2;
1675 for (; b<e; m=(b+e)/2) {
1676 // if (z > fClusters[m]->GetZ()) b=m+1;
1677 if (z > zcl[m]) b=m+1;
1678 else e=m;
1679 }
1680 return m;
1681}
44347160 1682//------------------------------------------------------------------------
1c97ce2f 1683Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1684 //--------------------------------------------------------------------
1685 // This function computes the rectangular road for this track
1686 //--------------------------------------------------------------------
1687
1688
1689 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1690 // take into account the misalignment: propagate track to misaligned detector plane
1691 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1692
1693 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1694 TMath::Sqrt(track->GetSigmaZ2() +
1695 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1696 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1697 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1698 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1699 TMath::Sqrt(track->GetSigmaY2() +
1700 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1701 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1702 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1703
1704 // track at boundary between detectors, enlarge road
1705 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1706 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1707 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1708 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1709 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1710 Float_t tgl = TMath::Abs(track->GetTgl());
1711 if (tgl > 1.) tgl=1.;
1712 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1713 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1714 Float_t snp = TMath::Abs(track->GetSnp());
1715 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1716 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1717 } // boundary
1718
1719 // add to the road a term (up to 2-3 mm) to deal with misalignments
1720 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1721 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1722
1723 Double_t r = fgLayers[ilayer].GetR();
1724 zmin = track->GetZ() - dz;
1725 zmax = track->GetZ() + dz;
1726 ymin = track->GetY() + r*det.GetPhi() - dy;
1727 ymax = track->GetY() + r*det.GetPhi() + dy;
1728
1729 // bring track back to idead detector plane
1730 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1731
1732 return kTRUE;
1733}
1734//------------------------------------------------------------------------
e43c066c 1735void AliITStrackerMI::AliITSlayer::
1736SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1737 //--------------------------------------------------------------------
1738 // This function sets the "window"
1739 //--------------------------------------------------------------------
1740
628e7bb0 1741 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1742 fYmin = ymin; fYmax =ymax;
1743 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1744 if (ymiddle<fYB[0]) {
1745 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1746 } else if (ymiddle>fYB[1]) {
1747 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1748 }
ae00569a 1749
e43c066c 1750 //
1751 fCurrentSlice =-1;
1752 // defualt take all
1753 fClustersCs = fClusters;
1754 fClusterIndexCs = fClusterIndex;
1755 fYcs = fY;
1756 fZcs = fZ;
1757 fNcs = fN;
628e7bb0 1758 //
e43c066c 1759 //is in 20 slice?
1760 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1761 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1762 if (slice<0) slice=0;
1763 if (slice>20) slice=20;
1764 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1765 if (isOK) {
1766 fCurrentSlice=slice;
1767 fClustersCs = fClusters20[fCurrentSlice];
1768 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1769 fYcs = fY20[fCurrentSlice];
1770 fZcs = fZ20[fCurrentSlice];
1771 fNcs = fN20[fCurrentSlice];
1772 }
1773 }
1774 //
1775 //is in 10 slice?
1776 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1777 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1778 if (slice<0) slice=0;
1779 if (slice>10) slice=10;
1780 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1781 if (isOK) {
1782 fCurrentSlice=slice;
1783 fClustersCs = fClusters10[fCurrentSlice];
1784 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1785 fYcs = fY10[fCurrentSlice];
1786 fZcs = fZ10[fCurrentSlice];
1787 fNcs = fN10[fCurrentSlice];
1788 }
1789 }
1790 //
1791 //is in 5 slice?
1792 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1793 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1794 if (slice<0) slice=0;
1795 if (slice>5) slice=5;
1796 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1797 if (isOK) {
e43c066c 1798 fCurrentSlice=slice;
1799 fClustersCs = fClusters5[fCurrentSlice];
1800 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1801 fYcs = fY5[fCurrentSlice];
1802 fZcs = fZ5[fCurrentSlice];
1803 fNcs = fN5[fCurrentSlice];
1804 }
1805 }
628e7bb0 1806 //
e43c066c 1807 fI=FindClusterIndex(zmin); fZmax=zmax;
1808 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1809 fSkip = 0;
1810 fAccepted =0;
6518a6c5 1811
1812 return;
e43c066c 1813}
44347160 1814//------------------------------------------------------------------------
628e7bb0 1815Int_t AliITStrackerMI::AliITSlayer::
1816FindDetectorIndex(Double_t phi, Double_t z) const {
1817 //--------------------------------------------------------------------
1818 //This function finds the detector crossed by the track
1819 //--------------------------------------------------------------------
31fb8575 1820 Double_t dphi;
1821 if (fZOffset<0) // old geometry
1822 dphi = -(phi-fPhiOffset);
1823 else // new geometry
1824 dphi = phi-fPhiOffset;
1825
6518a6c5 1826
628e7bb0 1827 if (dphi < 0) dphi += 2*TMath::Pi();
1828 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1829 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1830 if (np>=fNladders) np-=fNladders;
1831 if (np<0) np+=fNladders;
1832
6518a6c5 1833
628e7bb0 1834 Double_t dz=fZOffset-z;
6518a6c5 1835 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1836 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1837 if (nz>=fNdetectors) return -1;
1838 if (nz<0) return -1;
1839
23197852 1840 // ad hoc correction for 3rd ladder of SDD inner layer,
1841 // which is reversed (rotated by pi around local y)
1842 // this correction is OK only from AliITSv11Hybrid onwards
1843 if (GetR()>12. && GetR()<20.) { // SDD inner
1844 if(np==2) { // 3rd ladder
1845 nz = (fNdetectors-1) - nz;
1846 }
1847 }
1848 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1849
1850
628e7bb0 1851 return np*fNdetectors + nz;
1852}
44347160 1853//------------------------------------------------------------------------
ae00569a 1854const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1855{
e43c066c 1856 //--------------------------------------------------------------------
1857 // This function returns clusters within the "window"
1858 //--------------------------------------------------------------------
1859
ae00569a 1860 if (fCurrentSlice<0) {
e43c066c 1861 Double_t rpi2 = 2.*fR*TMath::Pi();
1862 for (Int_t i=fI; i<fImax; i++) {
1863 Double_t y = fY[i];
1864 if (fYmax<y) y -= rpi2;
1d4090b7 1865 if (fYmin>y) y += rpi2;
e43c066c 1866 if (y<fYmin) continue;
1867 if (y>fYmax) continue;
1868 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1869 ci=i;
ae00569a 1870 if (!test) fI=i+1;
e43c066c 1871 return fClusters[i];
1872 }
ae00569a 1873 } else {
e43c066c 1874 for (Int_t i=fI; i<fImax; i++) {
1875 if (fYcs[i]<fYmin) continue;
1876 if (fYcs[i]>fYmax) continue;
1877 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1878 ci=fClusterIndexCs[i];
ae00569a 1879 if (!test) fI=i+1;
e43c066c 1880 return fClustersCs[i];
1881 }
1882 }
1883 return 0;
1884}
44347160 1885//------------------------------------------------------------------------
e43c066c 1886Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1887const {
1888 //--------------------------------------------------------------------
afd25725 1889 // This function returns the layer thickness at this point (units X0)
e43c066c 1890 //--------------------------------------------------------------------
1891 Double_t d=0.0085;
e50912db 1892 x0=AliITSRecoParam::GetX0Air();
e43c066c 1893 if (43<fR&&fR<45) { //SSD2
1894 Double_t dd=0.0034;
1895 d=dd;
1896 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1897 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1898 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1899 for (Int_t i=0; i<12; i++) {
1900 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1901 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1902 d+=0.0034;
1903 break;
1904 }
1905 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1906 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1907 d+=0.0034;
1908 break;
1909 }
1910 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1911 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1912 }
1913 } else
1914 if (37<fR&&fR<41) { //SSD1
1915 Double_t dd=0.0034;
1916 d=dd;
1917 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1918 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1919 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1920 for (Int_t i=0; i<11; i++) {
1921 if (TMath::Abs(z-3.9*i)<0.15) {
1922 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1923 d+=dd;
1924 break;
1925 }
1926 if (TMath::Abs(z+3.9*i)<0.15) {
1927 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1928 d+=dd;
1929 break;
1930 }
1931 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1932 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1933 }
1934 } else
1935 if (13<fR&&fR<26) { //SDD
1936 Double_t dd=0.0033;
1937 d=dd;
1938 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1939
1940 if (TMath::Abs(y-1.80)<0.55) {
1941 d+=0.016;
1942 for (Int_t j=0; j<20; j++) {
1943 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1944 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1945 }
1946 }
1947 if (TMath::Abs(y+1.80)<0.55) {
1948 d+=0.016;
1949 for (Int_t j=0; j<20; j++) {
1950 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1951 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1952 }
1953 }
1954
1955 for (Int_t i=0; i<4; i++) {
1956 if (TMath::Abs(z-7.3*i)<0.60) {
1957 d+=dd;
1958 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1959 break;
1960 }
1961 if (TMath::Abs(z+7.3*i)<0.60) {
1962 d+=dd;
1963 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1964 break;
1965 }
1966 }
1967 } else
1968 if (6<fR&&fR<8) { //SPD2
1969 Double_t dd=0.0063; x0=21.5;
1970 d=dd;
1971 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 1972 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 1973 } else
1974 if (3<fR&&fR<5) { //SPD1
1975 Double_t dd=0.0063; x0=21.5;
1976 d=dd;
1977 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 1978 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 1979 }
1980
1981 return d;
1982}
44347160 1983//------------------------------------------------------------------------
23197852 1984AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
1985fR(det.fR),
1c97ce2f 1986fRmisal(det.fRmisal),
23197852 1987fPhi(det.fPhi),
1988fSinPhi(det.fSinPhi),
1989fCosPhi(det.fCosPhi),
1990fYmin(det.fYmin),
1991fYmax(det.fYmax),
1992fZmin(det.fZmin),
1993fZmax(det.fZmax),
1994fIsBad(det.fIsBad),
1995fNChips(det.fNChips),
1996fChipIsBad(det.fChipIsBad)
1997{
1998 //Copy constructor
1999}
2000//------------------------------------------------------------------------
2001void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2002 AliITSDetTypeRec *detTypeRec)
2003{
2004 //--------------------------------------------------------------------
2005 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2006 //--------------------------------------------------------------------
2007
2008 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2009 // while in the tracker they start from 0 for each layer
2010 for(Int_t il=0; il<ilayer; il++)
2011 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2012
2013 Int_t detType;
2014 if (ilayer==0 || ilayer==1) { // ---------- SPD
2015 detType = 0;
2016 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2017 detType = 1;
2018 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2019 detType = 2;
2020 } else {
2021 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2022 return;
2023 }
2024
2025 // Get calibration from AliITSDetTypeRec
2026 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
2027 AliITSCalibration *calibSPDdead = 0;
2028 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2029 if (calib->IsBad() ||
2030 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2031 {
2032 SetBad();
2033 printf("lay %d bad %d\n",ilayer,idet);
2034 }
2035
2036 // Get segmentation from AliITSDetTypeRec
2037 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2038
2039 // Read info about bad chips
2040 fNChips = segm->GetMaximumChipIndex()+1;
2041 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2042 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2043 fChipIsBad = new Bool_t[fNChips];
2044 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2045 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2046 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2047 }
2048
2049 return;
2050}
2051//------------------------------------------------------------------------
e50912db 2052Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2053{
2054 //--------------------------------------------------------------------
afd25725 2055 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2056 //--------------------------------------------------------------------
e43c066c 2057
e50912db 2058 if(fUseTGeo!=0) {
2059 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2060 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2061 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2062 }
2063
afd25725 2064 // beam pipe
e50912db 2065 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2066 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2067
2068 // layers
2069 Double_t x0=0;
e43c066c 2070 Double_t xn=fgLayers[fI].GetR();
2071 for (Int_t i=0; i<fI; i++) {
2072 Double_t xi=fgLayers[i].GetR();
e50912db 2073 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2074 d+=dLayer*xi*xi;
e43c066c 2075 }
2076
afd25725 2077 // shields
e43c066c 2078 if (fI>1) {
e50912db 2079 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2080 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2081 }
e43c066c 2082 if (fI>3) {
e50912db 2083 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2084 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2085 }
e43c066c 2086 return d/(xn*xn);
2087}
44347160 2088//------------------------------------------------------------------------
e43c066c 2089Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2090 //-------------------------------------------------------------------
e43c066c 2091 // This function returns number of clusters within the "window"
2092 //--------------------------------------------------------------------
2093 Int_t ncl=0;
2094 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2095 const AliITSRecPoint *c=fClusters[i];
e43c066c 2096 if (c->GetZ() > fZmax) break;
2097 if (c->IsUsed()) continue;
2098 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2099 Double_t y=fR*det.GetPhi() + c->GetY();
2100
2101 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2102 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2103
2104 if (y<fYmin) continue;
2105 if (y>fYmax) continue;
2106 ncl++;
2107 }
2108 return ncl;
2109}
44347160 2110//------------------------------------------------------------------------
ae00569a 2111Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2112 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2113{
e43c066c 2114 //--------------------------------------------------------------------
ae00569a 2115 // This function refits the track "track" at the position "x" using
2116 // the clusters from "clusters"
ef7253ac 2117 // If "extra"==kTRUE,
ae00569a 2118 // the clusters from overlapped modules get attached to "track"
7167ae53 2119 // If "planeff"==kTRUE,
2120 // special approach for plane efficiency evaluation is applyed
e43c066c 2121 //--------------------------------------------------------------------
6518a6c5 2122
e50912db 2123 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2124 Int_t k;
e50912db 2125 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2126 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2127 for (k=0; k<nc; k++) {
ae00569a 2128 Int_t idx=clusters->GetClusterIndex(k);
2129 Int_t ilayer=(idx&0xf0000000)>>28;
2130 index[ilayer]=idx;
e43c066c 2131 }
67c1e979 2132
7167ae53 2133 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2134}
44347160 2135//------------------------------------------------------------------------
ae00569a 2136Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2137 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2138{
67c1e979 2139 //--------------------------------------------------------------------
ae00569a 2140 // This function refits the track "track" at the position "x" using
67c1e979 2141 // the clusters from array
ae00569a 2142 // If "extra"==kTRUE,
2143 // the clusters from overlapped modules get attached to "track"
7167ae53 2144 // If "planeff"==kTRUE,
2145 // special approach for plane efficiency evaluation is applyed
67c1e979 2146 //--------------------------------------------------------------------
e50912db 2147 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2148 Int_t k;
e50912db 2149 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2150 //
e50912db 2151 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2152 index[k]=clusters[k];
67c1e979 2153 }
2154
afd25725 2155 // special for cosmics: check which the innermost layer crossed
2156 // by the track
2157 Int_t innermostlayer=5;
ae00569a 2158 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2159 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2160 if(drphi < fgLayers[innermostlayer].GetR()) break;
2161 }
2162 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2163
ae00569a 2164 Int_t modstatus=1; // found
2165 Float_t xloc,zloc;
67c1e979 2166 Int_t from, to, step;
ae00569a 2167 if (xx > track->GetX()) {
e50912db 2168 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2169 step=+1;
2170 } else {
e50912db 2171 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2172 step=-1;
2173 }
ae00569a 2174 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2175
ae00569a 2176 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2177 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2178 Double_t r=layer.GetR();
afd25725 2179 if (step<0 && xx>r) break;
2180
2181 // material between SSD and SDD, SDD and SPD
6518a6c5 2182 Double_t hI=ilayer-0.5*step;
e50912db 2183 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2184 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2185 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2186 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2187
2188 // remember old position [SR, GSI 18.02.2003]
2189 Double_t oldX=0., oldY=0., oldZ=0.;
ae00569a 2190 if (track->IsStartedTimeIntegral() && step==1) {
2191 track->GetGlobalXYZat(track->GetX(),oldX,oldY,oldZ);
67c1e979 2192 }
2193 //
ae00569a 2194
afd25725 2195 Double_t oldGlobXYZ[3];
ae00569a 2196 track->GetXYZ(oldGlobXYZ);
afd25725 2197
8602c008 2198 Double_t phi,z;
ae00569a 2199 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2200
67c1e979 2201 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2202
2203 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2204 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2205 if (skip==2) {
2206 // propagate to the layer radius
ae00569a 2207 Double_t xToGo; track->GetLocalXat(r,xToGo);
2208 track->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
6518a6c5 2209 // apply correction for material of the current layer
ae00569a 2210 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2211 modstatus = 4; // out in z
2212 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
2213 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 2214 // track time update [SR, GSI 17.02.2003]
ae00569a 2215 if (track->IsStartedTimeIntegral() && step==1) {
6518a6c5 2216 Double_t newX, newY, newZ;
ae00569a 2217 track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
6518a6c5 2218 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2219 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2220 track->AddTimeStep(TMath::Sqrt(dL2));
6518a6c5 2221 }
2222 continue;
2223 }
2224
e50912db 2225 if (idet<0) return kFALSE;
ae00569a 2226
67c1e979 2227 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2228 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2229
ae00569a 2230 track->SetDetectorIndex(idet);
2231 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
67c1e979 2232
23197852 2233 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2234
2235 const AliITSRecPoint *clAcc=0;
44347160 2236 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2237
6518a6c5 2238 Int_t idx=index[ilayer];
ae00569a 2239 if (idx>=0) { // cluster in this layer
2240 modstatus = 6; // no refit
2241 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2242 if (cl) {
2243 if (idet != cl->GetDetectorIndex()) {
2244 idet=cl->GetDetectorIndex();
a5d0fae6 2245 const AliITSdetector &detc=layer.GetDetector(idet);
2246 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2247 track->SetDetectorIndex(idet);
2248 LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
2249 }
ae00569a 2250 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2251 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2252 if (chi2<maxchi2) {
2253 clAcc=cl;
2254 maxchi2=chi2;
2255 modstatus = 1; // found
2256 } else {
7167ae53 2257 return kFALSE; //
ae00569a 2258 }
2259 }
2260 } else { // no cluster in this layer
2261 if (skip==1) {
2262 modstatus = 3; // skipped
8a32c4b5 2263 // Plane Eff determination:
2264 if (planeeff && AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) {
7167ae53 2265 if (IsOKForPlaneEff(track,ilayer)) // only adequate track for plane eff. evaluation
2266 UseTrackForPlaneEff(track,ilayer);
2267 }
ae00569a 2268 } else {
2269 modstatus = 5; // no cls in road
2270 // check dead
1c97ce2f 2271 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2272 dz = 0.5*(zmax-zmin);
2273 dy = 0.5*(ymax-ymin);
2274 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2275 if (dead==1) modstatus = 7; // holes in z in SPD
23197852 2276 if (dead==2 || dead==3) modstatus = 2; // dead from OCDB
ae00569a 2277 }
e43c066c 2278 }
ae00569a 2279
2280 if (clAcc) {
2281 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2282 track->SetSampledEdx(clAcc->GetQ(),track->GetNumberOfClusters()-1);
e43c066c 2283 }
ae00569a 2284 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2285
2286
2287 if (extra) { // search for extra clusters in overlapped modules
2288 AliITStrackV2 tmp(*track);
1c97ce2f 2289 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2290 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2291
2292 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2293 Int_t idetExtra=-1;
a5d0fae6 2294 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2295 Double_t tolerance=0.1;
ae00569a 2296 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2297 // only clusters in another module! (overlaps)
2298 idetExtra = clExtra->GetDetectorIndex();
2299 if (idet == idetExtra) continue;
2300
a5d0fae6 2301 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2302
1c97ce2f 2303 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2304 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2305 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2306 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2307
2308 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2309 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2310 }
2311 if (cci>=0) {
2312 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2313 track->SetExtraModule(ilayer,idetExtra);
2314 }
2315 } // end search for extra clusters in overlapped modules
1c97ce2f 2316
afd25725 2317 // Correct for material of the current layer
ae00569a 2318 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2319
2320 // track time update [SR, GSI 17.02.2003]
ae00569a 2321 if (track->IsStartedTimeIntegral() && step==1) {
e43c066c 2322 Double_t newX, newY, newZ;
ae00569a 2323 track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
e43c066c 2324 Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
2325 (oldZ-newZ)*(oldZ-newZ);
ae00569a 2326 track->AddTimeStep(TMath::Sqrt(dL2));
e43c066c 2327 }
2328 //
2329
ae00569a 2330 } // end loop on layers
2331
2332 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2333
e43c066c 2334 return kTRUE;
2335}
44347160 2336//------------------------------------------------------------------------
15dd636f 2337Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2338{
2339 //
2340 // calculate normalized chi2
2341 // return NormalizedChi2(track,0);
2342 Float_t chi2 = 0;
2343 Float_t sum=0;
2344 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2345 // track->fdEdxMismatch=0;
2346 Float_t dedxmismatch =0;
2347 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2348 if (mode<100){
2349 for (Int_t i = 0;i<6;i++){
b9671574 2350 if (track->GetClIndex(i)>0){
e43c066c 2351 Float_t cerry, cerrz;
2352 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2353 else
b9671574 2354 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2355 cerry*=cerry;
2356 cerrz*=cerrz;
b9671574 2357 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2358 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2359 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2360 if (ratio<0.5) {
2361 cchi2+=(0.5-ratio)*10.;
2362 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2363 dedxmismatch+=(0.5-ratio)*10.;
2364 }
2365 }
2366 if (i<2 ||i>3){
b9671574 2367 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2368 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2369 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2370 if (i<2) chi2+=2*cl->GetDeltaProbability();
2371 }
2372 chi2+=cchi2;
2373 sum++;
2374 }
2375 }
b9671574 2376 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2377 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2378 }
2379 }
2380 else{
2381 for (Int_t i = 0;i<4;i++){
b9671574 2382 if (track->GetClIndex(i)>0){
e43c066c 2383 Float_t cerry, cerrz;
2384 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2385 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2386 cerry*=cerry;
2387 cerrz*=cerrz;
b9671574 2388 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2389 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2390 sum++;
2391 }
2392 }
2393 for (Int_t i = 4;i<6;i++){
b9671574 2394 if (track->GetClIndex(i)>0){
e43c066c 2395 Float_t cerry, cerrz;
2396 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2397 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2398 cerry*=cerry;
2399 cerrz*=cerrz;
2400 Float_t cerryb, cerrzb;
2401 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2402 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2403 cerryb*=cerryb;
2404 cerrzb*=cerrzb;
b9671574 2405 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2406 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2407 sum++;
2408 }
2409 }
2410 }
b9671574 2411 if (track->GetESDtrack()->GetTPCsignal()>85){
2412 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2413 if (ratio<0.5) {
2414 chi2+=(0.5-ratio)*5.;
2415 }
2416 if (ratio>2){
2417 chi2+=(ratio-2.0)*3;
2418 }
2419 }
2420 //
b9671574 2421 Double_t match = TMath::Sqrt(track->GetChi22());
2422 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2423 if (!track->GetConstrain()) {
2424 if (track->GetNumberOfClusters()>2) {
2425 match/=track->GetNumberOfClusters()-2.;
2426 } else {
2427 match=0;
2428 }
2429 }
e43c066c 2430 if (match<0) match=0;
b9671574 2431 Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
2432 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2433 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2434 1./(1.+track->GetNSkipped()));
e43c066c 2435
2436 return normchi2;
2437}
44347160 2438//------------------------------------------------------------------------
15dd636f 2439Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
e43c066c 2440{
2441 //
2442 // return matching chi2 between two tracks
15dd636f 2443 AliITStrackMI track3(*track2);
e43c066c 2444 track3.Propagate(track1->GetAlpha(),track1->GetX());
2445 TMatrixD vec(5,1);
6c94f330 2446 vec(0,0)=track1->GetY() - track3.GetY();
2447 vec(1,0)=track1->GetZ() - track3.GetZ();
2448 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2449 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2450 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2451 //
2452 TMatrixD cov(5,5);
6c94f330 2453 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2454 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2455 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2456 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2457 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2458
6c94f330 2459 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2460 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2461 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2462 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2463 //
6c94f330 2464 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2465 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2466 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2467 //
6c94f330 2468 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2469 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2470 //
6c94f330 2471 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2472
2473 cov.Invert();
2474 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2475 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2476 return chi2(0,0);
2477}
44347160 2478//------------------------------------------------------------------------
6518a6c5 2479Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr)
e43c066c 2480{
2481 //
afd25725 2482 // return probability that given point (characterized by z position and error)
2483 // is in SPD dead zone
e43c066c 2484 //
afd25725 2485 Double_t probability = 0.;
e43c066c 2486 Double_t absz = TMath::Abs(zpos);
afd25725 2487 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2488 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2489 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2490 Double_t zmin, zmax;
2491 if (zpos<-6.) { // dead zone at z = -7
e50912db 2492 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2493 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2494 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2495 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2496 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2497 } else if (absz<2.) { // dead zone at z = 0
e50912db 2498 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2499 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2500 } else {
2501 zmin = 0.;
2502 zmax = 0.;
e43c066c 2503 }
afd25725 2504 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2505 // dead zone)
2506 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2507 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2508 return probability;
2509}
44347160 2510//------------------------------------------------------------------------
15dd636f 2511Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
e43c066c 2512{
2513 //
2514 // calculate normalized chi2
2515 Float_t chi2[6];
2516 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2517 Float_t ncl = 0;
2518 for (Int_t i = 0;i<6;i++){
b9671574 2519 if (TMath::Abs(track->GetDy(i))>0){
2520 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2521 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2522 ncl++;
2523 }
2524 else{chi2[i]=10000;}
2525 }
2526 Int_t index[6];
2527 TMath::Sort(6,chi2,index,kFALSE);
2528 Float_t max = float(ncl)*fac-1.;
2529 Float_t sumchi=0, sumweight=0;
2530 for (Int_t i=0;i<max+1;i++){
2531 Float_t weight = (i<max)?1.:(max+1.-i);
2532 sumchi+=weight*chi2[index[i]];
2533 sumweight+=weight;
2534 }
2535 Double_t normchi2 = sumchi/sumweight;
2536 return normchi2;
2537}
44347160 2538//------------------------------------------------------------------------
15dd636f 2539Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
e43c066c 2540{
2541 //
2542 // calculate normalized chi2
2543 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2544 Int_t npoints = 0;
2545 Double_t res =0;
2546 for (Int_t i=0;i<6;i++){
b9671574 2547 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2548 Double_t sy1 = forwardtrack->GetSigmaY(i);
2549 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2550 Double_t sy2 = backtrack->GetSigmaY(i);
2551 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2552 if (i<2){ sy2=1000.;sz2=1000;}
2553 //
b9671574 2554 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2555 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2556 //
2557 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2558 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2559 //
2560 res+= nz0*nz0+ny0*ny0;
2561 npoints++;
2562 }
2563 if (npoints>1) return
6c23ffed 2564 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2565 //2*forwardtrack->fNUsed+
b9671574 2566 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2567 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2568 return 1000;
2569}
44347160 2570//------------------------------------------------------------------------
e43c066c 2571Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2572 //--------------------------------------------------------------------
2573 // Return pointer to a given cluster
2574 //--------------------------------------------------------------------
2575 Int_t l=(index & 0xf0000000) >> 28;
2576 Int_t c=(index & 0x0fffffff) >> 00;
2577 return fgLayers[l].GetWeight(c);
2578}
44347160 2579//------------------------------------------------------------------------
15dd636f 2580void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
e43c066c 2581{
2582 //---------------------------------------------
2583 // register track to the list
628e7bb0 2584 //
b9671574 2585 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2586 //
2587 //
e43c066c 2588 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2589 Int_t index = track->GetClusterIndex(icluster);
2590 Int_t l=(index & 0xf0000000) >> 28;
2591 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2592 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2593 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2594 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2595 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2596 break;
2597 }
2598 }
2599 }
2600}
44347160 2601//------------------------------------------------------------------------
15dd636f 2602void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
e43c066c 2603{
2604 //---------------------------------------------
2605 // unregister track from the list
2606 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2607 Int_t index = track->GetClusterIndex(icluster);
2608 Int_t l=(index & 0xf0000000) >> 28;
2609 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2610 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2611 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2612 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2613 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2614 }
2615 }
2616 }
2617}
44347160 2618//------------------------------------------------------------------------
00a7cc50 2619Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2620{
2621 //-------------------------------------------------------------
2622 //get number of shared clusters
2623 //-------------------------------------------------------------
2624 Float_t shared=0;
2625 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2626 // mean number of clusters
2627 Float_t *ny = GetNy(id), *nz = GetNz(id);
2628
2629
2630 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2631 Int_t index = track->GetClusterIndex(icluster);
2632 Int_t l=(index & 0xf0000000) >> 28;
2633 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2634 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2635 if (ny[l]==0){
2636 printf("problem\n");
2637 }
00a7cc50 2638 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2639 Float_t weight=1;
2640 //
2641 Float_t deltan = 0;
2642 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2643 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2644 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2645 if (l<2 || l>3){
2646 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2647 }
2648 else{
2649 deltan = (cl->GetNz()-nz[l]);
2650 }
2651 if (deltan>2.0) continue; // extended - highly probable shared cluster
2652 weight = 2./TMath::Max(3.+deltan,2.);
2653 //
2654 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2655 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2656 list[l]=index;
00a7cc50 2657 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2658 shared+=weight;
2659 break;
2660 }
2661 }
2662 }
b9671574 2663 track->SetNUsed(shared);
e43c066c 2664 return shared;
2665}
44347160 2666//------------------------------------------------------------------------
15dd636f 2667Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2668{
2669 //
2670 // find first shared track
2671 //
2672 // mean number of clusters
2673 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2674 //
2675 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2676 Int_t sharedtrack=100000;
2677 Int_t tracks[24],trackindex=0;
2678 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2679 //
2680 for (Int_t icluster=0;icluster<6;icluster++){
2681 if (clusterlist[icluster]<0) continue;
2682 Int_t index = clusterlist[icluster];
2683 Int_t l=(index & 0xf0000000) >> 28;
2684 Int_t c=(index & 0x0fffffff) >> 00;
2685 if (ny[l]==0){
2686 printf("problem\n");
2687 }
b9671574 2688 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2689 //if (l>3) continue;
00a7cc50 2690 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2691 //
2692 Float_t deltan = 0;
2693 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2694 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2695 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2696 if (l<2 || l>3){
2697 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2698 }
2699 else{
2700 deltan = (cl->GetNz()-nz[l]);
2701 }
2702 if (deltan>2.0) continue; // extended - highly probable shared cluster
2703 //
2704 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2705 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2706 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2707 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2708 trackindex++;
2709 }
2710 }
2711 }
2712 if (trackindex==0) return -1;
2713 if (trackindex==1){
2714 sharedtrack = tracks[0];
2715 }else{
2716 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2717 else{
2718 //
a5d0fae6 2719 Int_t tracks2[24], cluster[24];
2720 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2721 Int_t index =0;
2722 //
2723 for (Int_t i=0;i<trackindex;i++){
2724 if (tracks[i]<0) continue;
a5d0fae6 2725 tracks2[index] = tracks[i];
e43c066c 2726 cluster[index]++;
2727 for (Int_t j=i+1;j<trackindex;j++){
2728 if (tracks[j]<0) continue;
2729 if (tracks[j]==tracks[i]){
2730 cluster[index]++;
2731 tracks[j]=-1;
2732 }
2733 }
2734 index++;
2735 }
2736 Int_t max=0;
2737 for (Int_t i=0;i<index;i++){
2738 if (cluster[index]>max) {
a5d0fae6 2739 sharedtrack=tracks2[index];
e43c066c 2740 max=cluster[index];
2741 }
2742 }
2743 }
2744 }
2745
2746 if (sharedtrack>=100000) return -1;
2747 //
2748 // make list of overlaps
2749 shared =0;
2750 for (Int_t icluster=0;icluster<6;icluster++){
2751 if (clusterlist[icluster]<0) continue;
2752 Int_t index = clusterlist[icluster];
2753 Int_t l=(index & 0xf0000000) >> 28;
2754 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2755 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2756 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2757 if (l==0 || l==1){
2758 if (cl->GetNy()>2) continue;
2759 if (cl->GetNz()>2) continue;
2760 }
2761 if (l==4 || l==5){
2762 if (cl->GetNy()>3) continue;
2763 if (cl->GetNz()>3) continue;
2764 }
2765 //
2766 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2767 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2768 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2769 overlist[l]=index;
2770 shared++;
2771 }
2772 }
2773 }
2774 return sharedtrack;
2775}
44347160 2776//------------------------------------------------------------------------
15dd636f 2777AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2778 //
2779 // try to find track hypothesys without conflicts
2780 // with minimal chi2;
2781 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2782 Int_t entries1 = arr1->GetEntriesFast();
2783 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2784 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2785 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2786 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2787 //
15dd636f 2788 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2789 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2790 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2791
2792 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2793 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2794 UnRegisterClusterTracks(track,trackID1);
2795 }
2796 //
2797 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2798 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2799 UnRegisterClusterTracks(track,trackID2);
2800 }
2801 Int_t index1=0;
2802 Int_t index2=0;
2803 Float_t maxconflicts=6;
2804 Double_t maxchi2 =1000.;
2805 //
2806 // get weight of hypothesys - using best hypothesy
2807 Double_t w1,w2;
2808
2809 Int_t list1[6],list2[6];
00a7cc50 2810 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2811 RegisterClusterTracks(track10,trackID1);
2812 RegisterClusterTracks(track20,trackID2);
2813 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2814 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2815 UnRegisterClusterTracks(track10,trackID1);
2816 UnRegisterClusterTracks(track20,trackID2);
2817 //
2818 // normalized chi2
2819 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2820 Float_t nerry[6],nerrz[6];
2821 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2822 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2823 for (Int_t i=0;i<6;i++){
2824 if ( (erry1[i]>0) && (erry2[i]>0)) {
2825 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2826 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2827 }else{
2828 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2829 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2830 }
b9671574 2831 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2832 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2833 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2834 ncl1++;
2835 }
b9671574 2836 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2837 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2838 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2839 ncl2++;
2840 }
2841 }
2842 chi21/=ncl1;
2843 chi22/=ncl2;
2844 //
2845 //
b9671574 2846 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2847 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2848 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2849 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2850 //
2851 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2852 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2853 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2854 );
2855 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2856 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2857 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2858 );
2859
2860 Double_t sumw = w1+w2;
2861 w1/=sumw;
2862 w2/=sumw;
2863 if (w1<w2*0.5) {
2864 w1 = (d2+0.5)/(d1+d2+1.);
2865 w2 = (d1+0.5)/(d1+d2+1.);
2866 }
2867 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2868 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2869 //
2870 // get pair of "best" hypothesys
2871 //
2872 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2873 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2874
2875 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2876 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2877 //if (track1->fFakeRatio>0) continue;
2878 RegisterClusterTracks(track1,trackID1);
2879 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2880 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2881
2882 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2883 //if (track2->fFakeRatio>0) continue;
2884 Float_t nskipped=0;
2885 RegisterClusterTracks(track2,trackID2);
e43c066c 2886 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2887 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2888 UnRegisterClusterTracks(track2,trackID2);
2889 //
b9671574 2890 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2891 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2892 if (nskipped>0.5) continue;
2893 //
2894 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2895 if (conflict1+1<cconflict1) continue;
2896 if (conflict2+1<cconflict2) continue;
2897 Float_t conflict=0;
2898 Float_t sumchi2=0;
2899 Float_t sum=0;
2900 for (Int_t i=0;i<6;i++){
2901 //
2902 Float_t c1 =0.; // conflict coeficients
2903 Float_t c2 =0.;
2904 if (clist1[i]&&clist2[i]){
2905 Float_t deltan = 0;
2906 if (i<2 || i>3){
2907 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2908 }
2909 else{
2910 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2911 }
2912 c1 = 2./TMath::Max(3.+deltan,2.);
2913 c2 = 2./TMath::Max(3.+deltan,2.);
2914 }
2915 else{
2916 if (clist1[i]){
2917 Float_t deltan = 0;
2918 if (i<2 || i>3){
2919 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2920 }
2921 else{
2922 deltan = (clist1[i]->GetNz()-nz1[i]);
2923 }
2924 c1 = 2./TMath::Max(3.+deltan,2.);
2925 c2 = 0;
2926 }
2927
2928 if (clist2[i]){
2929 Float_t deltan = 0;
2930 if (i<2 || i>3){
2931 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2932 }
2933 else{
2934 deltan = (clist2[i]->GetNz()-nz2[i]);
2935 }
2936 c2 = 2./TMath::Max(3.+deltan,2.);
2937 c1 = 0;
2938 }
2939 }
2940 //
a5d0fae6 2941 chi21=0;chi22=0;
b9671574 2942 if (TMath::Abs(track1->GetDy(i))>0.) {
2943 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2944 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2945 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2946 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2947 }else{
b9671574 2948 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2949 }
2950 //
b9671574 2951 if (TMath::Abs(track2->GetDy(i))>0.) {
2952 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2953 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2954 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2955 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2956 }
2957 else{
b9671574 2958 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 2959 }
2960 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
2961 if (chi21>0) sum+=w1;
2962 if (chi22>0) sum+=w2;
2963 conflict+=(c1+c2);
2964 }
b9671574 2965 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
2966 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 2967 Double_t normchi2 = 2*conflict+sumchi2/sum;
2968 if ( normchi2 <maxchi2 ){
2969 index1 = itrack1;
2970 index2 = itrack2;
2971 maxconflicts = conflict;
2972 maxchi2 = normchi2;
2973 }
2974 }
2975 UnRegisterClusterTracks(track1,trackID1);
2976 }
2977 //
2978 // if (maxconflicts<4 && maxchi2<th0){
2979 if (maxchi2<th0*2.){
b9671574 2980 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 2981 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 2982 track1->SetChi2MIP(5,maxconflicts);
2983 track1->SetChi2MIP(6,maxchi2);
2984 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 2985 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 2986 track1->SetChi2MIP(8,index1);
e43c066c 2987 fBestTrackIndex[trackID1] =index1;
2988 UpdateESDtrack(track1, AliESDtrack::kITSin);
2989 }
b9671574 2990 else if (track10->GetChi2MIP(0)<th1){
2991 track10->SetChi2MIP(5,maxconflicts);
2992 track10->SetChi2MIP(6,maxchi2);
e43c066c 2993 // track10->UpdateESDtrack(AliESDtrack::kITSin);
2994 UpdateESDtrack(track10,AliESDtrack::kITSin);
2995 }
2996
2997 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2998 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2999 UnRegisterClusterTracks(track,trackID1);
3000 }
3001 //
3002 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3003 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3004 UnRegisterClusterTracks(track,trackID2);
3005 }
3006
44347160 3007 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3008 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3009 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3010 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3011 RegisterClusterTracks(track10,trackID1);
3012 }
44347160 3013 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3014 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3015 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3016 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3017 RegisterClusterTracks(track20,trackID2);
3018 }
3019 return track10;
3020
3021}
44347160 3022//------------------------------------------------------------------------
e43c066c 3023void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3024 //--------------------------------------------------------------------
3025 // This function marks clusters assigned to the track
3026 //--------------------------------------------------------------------
3027 AliTracker::UseClusters(t,from);
3028
00a7cc50 3029 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3030 //if (c->GetQ()>2) c->Use();
3031 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3032 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3033 //if (c->GetQ()>2) c->Use();
3034 if (c->GetSigmaZ2()>0.1) c->Use();
3035
3036}
44347160 3037//------------------------------------------------------------------------
15dd636f 3038void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3039{
3040 //------------------------------------------------------------------
3041 // add track to the list of hypothesys
3042 //------------------------------------------------------------------
3043
fddf8459 3044 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3045 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3046 //
3047 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3048 if (!array) {
3049 array = new TObjArray(10);
3050 fTrackHypothesys.AddAt(array,esdindex);
3051 }
3052 array->AddLast(track);
3053}
44347160 3054//------------------------------------------------------------------------
e43c066c 3055void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3056{
3057 //-------------------------------------------------------------------
3058 // compress array of track hypothesys
3059 // keep only maxsize best hypothesys
3060 //-------------------------------------------------------------------
3061 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3062 if (! (fTrackHypothesys.At(esdindex)) ) return;
3063 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3064 Int_t entries = array->GetEntriesFast();
3065 //
3066 //- find preliminary besttrack as a reference
3067 Float_t minchi2=10000;
3068 Int_t maxn=0;
15dd636f 3069 AliITStrackMI * besttrack=0;
e43c066c 3070 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3071 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3072 if (!track) continue;
3073 Float_t chi2 = NormalizedChi2(track,0);
3074 //
b9671574 3075 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3076 track->SetLabel(tpcLabel);
3077 CookdEdx(track);
b9671574 3078 track->SetFakeRatio(1.);
e43c066c 3079 CookLabel(track,0.); //For comparison only
3080 //
44347160 3081 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3082 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3083 if (track->GetNumberOfClusters()<maxn) continue;
3084 maxn = track->GetNumberOfClusters();
3085 if (chi2<minchi2){
3086 minchi2=chi2;
3087 besttrack=track;
3088 }
3089 }
3090 else{
b9671574 3091 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3092 delete array->RemoveAt(itrack);
3093 }
e43c066c 3094 }
3095 }
3096 if (!besttrack) return;
3097 //
3098 //
3099 //take errors of best track as a reference
3100 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3101 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3102 for (Int_t j=0;j<6;j++) {
3103 if (besttrack->GetClIndex(j)>0){
3104 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3105 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3106 ny[j] = besttrack->GetNy(j);
3107 nz[j] = besttrack->GetNz(j);
e43c066c 3108 }
3109 }
3110 //
3111 // calculate normalized chi2
3112 //
3113 Float_t * chi2 = new Float_t[entries];
3114 Int_t * index = new Int_t[entries];
3115 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3116 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3117 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3118 if (track){
b9671574 3119 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3120 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3121 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3122 else{
b9671574 3123 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3124 delete array->RemoveAt(itrack);
3125 }
3126 }
e43c066c 3127 }
3128 }
3129 //
3130 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3131 besttrack = (AliITStrackMI*)array->At(index[0]);
44347160 3132 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3133 for (Int_t j=0;j<6;j++){
3134 if (besttrack->GetClIndex(j)>0){
3135 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3136 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3137 ny[j] = besttrack->GetNy(j);
3138 nz[j] = besttrack->GetNz(j);
e43c066c 3139 }
3140 }
3141 }
3142 //
3143 // calculate one more time with updated normalized errors
3144 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3145 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3146 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3147 if (track){
b9671574 3148 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
44347160 3149 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3150 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3151 else
3152 {
b9671574 3153 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3154 delete array->RemoveAt(itrack);
3155 }
3156 }
e43c066c 3157 }
3158 }
3159 entries = array->GetEntriesFast();
3160 //
628e7bb0 3161 //
e43c066c 3162 if (entries>0){
3163 TObjArray * newarray = new TObjArray();
3164 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3165 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3166 if (besttrack){
3167 //
a5d0fae6 3168 for (Int_t j=0;j<6;j++){
3169 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3170 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3171 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3172 ny[j] = besttrack->GetNy(j);
3173 nz[j] = besttrack->GetNz(j);
e43c066c 3174 }
3175 }
b9671574 3176 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3177 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3178 Float_t minn = besttrack->GetNumberOfClusters()-3;
3179 Int_t accepted=0;
3180 for (Int_t i=0;i<entries;i++){
15dd636f 3181 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3182 if (!track) continue;
3183 if (accepted>maxcut) break;
b9671574 3184 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3185 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3186 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3187 delete array->RemoveAt(index[i]);
3188 continue;
3189 }
e43c066c 3190 }
b9671574 3191 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3192 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3193 if (!shortbest) accepted++;
e43c066c 3194 //
3195 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3196 for (Int_t j=0;j<6;j++){
3197 if (nz[j]==0){
3198 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3199 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3200 ny[j] = track->GetNy(j);
3201 nz[j] = track->GetNz(j);
e43c066c 3202 }
3203 }
3204 }
3205 else{
3206 delete array->RemoveAt(index[i]);
3207 }
3208 }
3209 array->Delete();
3210 delete fTrackHypothesys.RemoveAt(esdindex);
3211 fTrackHypothesys.AddAt(newarray,esdindex);
3212 }
3213 else{
3214 array->Delete();
3215 delete fTrackHypothesys.RemoveAt(esdindex);
3216 }
3217 }
3218 delete [] chi2;
3219 delete [] index;
3220}
44347160 3221//------------------------------------------------------------------------
15dd636f 3222AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3223{
3224 //-------------------------------------------------------------
3225 // try to find best hypothesy
3226 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3227 //-------------------------------------------------------------
3228 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3229 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3230 if (!array) return 0;
3231 Int_t entries = array->GetEntriesFast();
3232 if (!entries) return 0;
3233 Float_t minchi2 = 100000;
15dd636f 3234 AliITStrackMI * besttrack=0;
e43c066c 3235 //
15dd636f 3236 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3237 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3238 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3239 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3240 //
3241 for (Int_t i=0;i<entries;i++){
15dd636f 3242 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3243 if (!track) continue;
628e7bb0 3244 Float_t sigmarfi,sigmaz;
3245 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3246 track->SetDnorm(0,sigmarfi);
3247 track->SetDnorm(1,sigmaz);
628e7bb0 3248 //
b9671574 3249 track->SetChi2MIP(1,1000000);
3250 track->SetChi2MIP(2,1000000);
3251 track->SetChi2MIP(3,1000000);
e43c066c 3252 //
3253 // backtrack
15dd636f 3254 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3255 if (track->GetConstrain()) {
e50912db 3256 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3257 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3258 backtrack->ResetCovariance(10.);
628e7bb0 3259 }else{
6c94f330 3260 backtrack->ResetCovariance(10.);
628e7bb0 3261 }
e43c066c 3262 backtrack->ResetClusters();
628e7bb0 3263
e43c066c 3264 Double_t x = original->GetX();
3265 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3266 //
b9671574 3267 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3268 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3269 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3270 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3271
b9671574 3272 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3273 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3274 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3275
3276
44347160 3277 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3278 //
3279 //forward track - without constraint
15dd636f 3280 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3281 forwardtrack->ResetClusters();
3282 x = track->GetX();
628e7bb0 3283 RefitAt(x,forwardtrack,track);
b9671574 3284 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3285 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3286 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3287
791f9a2a 3288 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3289 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3290 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3291 forwardtrack->SetD(0,track->GetD(0));
3292 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3293 {
3294 Int_t list[6];
00a7cc50 3295 AliITSRecPoint* clist[6];
b9671574 3296 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3297 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3298 }
3299
b9671574 3300 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3301 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3302 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3303 track->SetChi2MIP(3,1000);
e43c066c 3304 continue;
3305 }
b9671574 3306 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3307 //
3308 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3309 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3310 }
3311 if (chi2 < minchi2){
15dd636f 3312 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3313 besttrack = track;
e43c066c 3314 besttrack->SetLabel(track->GetLabel());
b9671574 3315 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3316 minchi2 = chi2;
791f9a2a 3317 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3318 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3319 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3320 }
3321 }
3322 delete backtrack;
3323 delete forwardtrack;
3324 Int_t accepted=0;
3325 for (Int_t i=0;i<entries;i++){
fddf8459 3326 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3327
e43c066c 3328 if (!track) continue;
628e7bb0 3329
44347160 3330 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3331 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3332 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3333 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3334 delete array->RemoveAt(i);
3335 continue;
3336 }
e43c066c 3337 }
3338 else{
3339 accepted++;
3340 }
3341 }
3342 //
3343 array->Compress();
3344 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3345
e43c066c 3346 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3347 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3348 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3349 if (!besttrack) return 0;
b9671574 3350 besttrack->SetChi2MIP(8,0);
e43c066c 3351 fBestTrackIndex[esdindex]=0;
3352 entries = array->GetEntriesFast();
15dd636f 3353 AliITStrackMI *longtrack =0;
e43c066c 3354 minchi2 =1000;
b9671574 3355 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3356 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3357 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3358 if (!track->GetConstrain()) continue;
3359 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3360 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3361 if (track->GetChi2MIP(0)>4.) continue;
3362 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3363 longtrack =track;
3364 }
3365 //if (longtrack) besttrack=longtrack;
3366
3367 Int_t list[6];
00a7cc50 3368 AliITSRecPoint * clist[6];
e43c066c 3369 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3370 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3371 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3372 RegisterClusterTracks(besttrack,esdindex);
3373 }
3374 //
3375 //
3376 if (shared>0.0){
3377 Int_t nshared;
3378 Int_t overlist[6];
3379 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3380 if (sharedtrack>=0){
3381 //
3382 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3383 if (besttrack){
3384 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3385 }
3386 else return 0;
3387 }
3388 }
3389
3390 if (shared>2.5) return 0;
3391 if (shared>1.0) return besttrack;
3392 //
628e7bb0 3393 // Don't sign clusters if not gold track
3394 //
3395 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3396 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3397 //
e43c066c 3398 if (fConstraint[fPass]){
3399 //
3400 // sign clusters
3401 //
3402 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3403 for (Int_t i=0;i<6;i++){
b9671574 3404 Int_t index = besttrack->GetClIndex(i);
e43c066c 3405 if (index<=0) continue;
3406 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3407 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3408 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3409 if (!c) continue;
3410 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3411 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3412 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3413 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3414 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3415 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3416
3417 Bool_t cansign = kTRUE;
3418 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3419 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3420 if (!track) continue;
b9671574 3421 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
3422 if ( (track->GetClIndex(ilayer)>0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3423 cansign = kFALSE;
3424 break;
3425 }
3426 }
3427 if (cansign){
b9671574 3428 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3429 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3430 if (!c->IsUsed()) c->Use();
3431 }
3432 }
3433 }
3434 return besttrack;
3435}
44347160 3436//------------------------------------------------------------------------
e43c066c 3437void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3438{
3439 //
3440 // get "best" hypothesys
628e7bb0 3441 //
e43c066c 3442
3443 Int_t nentries = itsTracks.GetEntriesFast();
3444 for (Int_t i=0;i<nentries;i++){
15dd636f 3445 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3446 if (!track) continue;
3447 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3448 if (!array) continue;
3449 if (array->GetEntriesFast()<=0) continue;
3450 //
15dd636f 3451 AliITStrackMI* longtrack=0;
e43c066c 3452 Float_t minn=0;
3453 Float_t maxchi2=1000;
3454 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3455 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3456 if (!trackHyp) continue;
3457 if (trackHyp->GetGoldV0()) {
3458 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3459 break;
3460 }
a5d0fae6 3461 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3462 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3463 if (fAfterV0){
a5d0fae6 3464 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3465 }
a5d0fae6 3466 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3467 //
3468 if (chi2 > maxchi2) continue;
a5d0fae6 3469 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3470 maxchi2 = chi2;
a5d0fae6 3471 longtrack=trackHyp;
e43c066c 3472 }
628e7bb0 3473 //
3474 //
3475 //
15dd636f 3476 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3477 if (!longtrack) {longtrack = besttrack;}
3478 else besttrack= longtrack;
628e7bb0 3479 //
afd25725 3480 if (besttrack) {
e43c066c 3481 Int_t list[6];
00a7cc50 3482 AliITSRecPoint * clist[6];
e43c066c 3483 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3484 //
b9671574 3485 track->SetNUsed(shared);
3486 track->SetNSkipped(besttrack->GetNSkipped());
3487 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3488 if (shared>0) {
3489 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3490 Int_t nshared;
3491 Int_t overlist[6];
3492 //
3493 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3494 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3495 if (sharedtrack>=0) {
e43c066c 3496 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3497 }
3498 }
afd25725 3499 if (besttrack&&fAfterV0) {
628e7bb0 3500 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3501 }
e43c066c 3502 if (besttrack&&fConstraint[fPass])
3503 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3504 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3505 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3506 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3507 }
3508
3509 }
3510 }
3511}
44347160 3512//------------------------------------------------------------------------
15dd636f 3513void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3514 //--------------------------------------------------------------------
3515 //This function "cooks" a track label. If label<0, this track is fake.
3516 //--------------------------------------------------------------------
3517 Int_t tpcLabel=-1;
3518
b9671574 3519 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3520
b9671574 3521 track->SetChi2MIP(9,0);
e43c066c 3522 Int_t nwrong=0;
3523 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3524 Int_t cindex = track->GetClusterIndex(i);
3525 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3526 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3527 Int_t isWrong=1;
3528 for (Int_t ind=0;ind<3;ind++){
3529 if (tpcLabel>0)
3530 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
3531 }
b9671574 3532 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3533 nwrong+=isWrong;
3534 }
7d43b4c4 3535 Int_t nclusters = track->GetNumberOfClusters();
3536 if (nclusters > 0) //PH Some tracks don't have any cluster
3537 track->SetFakeRatio(double(nwrong)/double(nclusters));
e43c066c 3538 if (tpcLabel>0){
b9671574 3539 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
e43c066c 3540 else
b9671574 3541 track->SetLabel(tpcLabel);
e43c066c 3542 }
3543
3544}
44347160 3545//------------------------------------------------------------------------
15dd636f 3546void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
e43c066c 3547{
3548 //
3549 //
3550 // Int_t list[6];
00a7cc50 3551 //AliITSRecPoint * clist[6];
e43c066c 3552 // Int_t shared = GetNumberOfSharedClusters(track,index,list,clist);
3553 Float_t dedx[4];
3554 Int_t accepted=0;
b9671574 3555 track->SetChi2MIP(9,0);
e43c066c 3556 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3557 Int_t cindex = track->GetClusterIndex(i);
3558 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3559 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3560 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3561 Int_t isWrong=1;
3562 for (Int_t ind=0;ind<3;ind++){
3563 if (cl->GetLabel(ind)==lab) isWrong=0;
3564 }
b9671574 3565 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3566 if (l<2) continue;
3567 //if (l>3 && (cl->GetNy()>4) || (cl->GetNz()>4)) continue; //shared track
3568 //if (l>3&& !(cl->GetType()==1||cl->GetType()==10)) continue;
3569 //if (l<4&& !(cl->GetType()==1)) continue;
b9671574 3570 dedx[accepted]= track->GetSampledEdx(i);
e43c066c 3571 //dedx[accepted]= track->fNormQ[l];
3572 accepted++;
3573 }
3574 if (accepted<1) {
3575 track->SetdEdx(0);
3576 return;
3577 }
3578 Int_t indexes[4];
3579 TMath::Sort(accepted,dedx,indexes,kFALSE);
3580 Double_t low=0.;
3581 Double_t up=0.51;
3582 Double_t nl=low*accepted, nu =up*accepted;
3583 Float_t sumamp = 0;
3584 Float_t sumweight =0;
3585 for (Int_t i=0; i<accepted; i++) {
3586 Float_t weight =1;
3587 if (i<nl+0.1) weight = TMath::Max(1.-(nl-i),0.);
3588 if (i>nu-1) weight = TMath::Max(nu-i,0.);
3589 sumamp+= dedx[indexes[i]]*weight;
3590 sumweight+=weight;
3591 }
3592 track->SetdEdx(sumamp/sumweight);
3593}
44347160 3594//------------------------------------------------------------------------
e50912db 3595void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3596 //
3597 //
afd25725 3598 if (fCoefficients) delete []fCoefficients;
3599 fCoefficients = new Float_t[ntracks*48];
3600 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3601}
44347160 3602//------------------------------------------------------------------------
00a7cc50 3603Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3604{
3605 //
3606 //
3607 //
3608 Float_t erry,errz;
3609 Float_t theta = track->GetTgl();
3610 Float_t phi = track->GetSnp();
3611 phi = TMath::Sqrt(phi*phi/(1.-phi*phi));
e50912db 3612 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz);
1c97ce2f 3613 //printf(" chi2: tr-cl %f %f tr X %f cl X %f\n",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX());
3614
3615 // Take into account the mis-alignment (bring track to cluster plane)
3616 Double_t xTrOrig=track->GetX();
3617 if (!track->PropagateTo(xTrOrig+cluster->GetX(),0.,0.)) return 1000.;
3618 //printf(" chi2: tr-cl %f %f tr X %f cl X %f\n",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX());
e43c066c 3619 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz);
1c97ce2f 3620 // Bring the track back to detector plane in ideal geometry
3621 // [mis-alignment will be accounted for in UpdateMI()]
3622 if (!track->PropagateTo(xTrOrig,0.,0.)) return 1000.;
e43c066c 3623 Float_t ny,nz;
e50912db 3624 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3625 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3626 if (delta>1){
3627 chi2+=0.5*TMath::Min(delta/2,2.);
3628 chi2+=2.*cluster->GetDeltaProbability();
3629 }
3630 //
b9671574 3631 track->SetNy(layer,ny);
3632 track->SetNz(layer,nz);
3633 track->SetSigmaY(layer,erry);
3634 track->SetSigmaZ(layer, errz);
e43c066c 3635 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
b9671574 3636 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/(1.- track->GetSnp()*track->GetSnp())));
e43c066c 3637 return chi2;
3638
3639}
e50912db 3640//------------------------------------------------------------------------
3641Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3642{
3643 //
3644 //
3645 //
3646 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3647 track->SetClIndex(layer, index);
572f41f9 3648 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3649 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3650 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3651 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3652 }
e43c066c 3653 }
a504d56f 3654
1f3e997f 3655 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
a504d56f 3656
afd25725 3657
1c97ce2f 3658 // Take into account the mis-alignment (bring track to cluster plane)
3659 Double_t xTrOrig=track->GetX();
3660 //Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);printf("gtr %f %f %f\n",trxyz[0],trxyz[1],trxyz[2]);printf("gcl %f %f %f\n",clxyz[0],clxyz[1],clxyz[2]);
3661 //printf(" xtr %f xcl %f\n",track->GetX(),cl->GetX());
fddf8459 3662
1c97ce2f 3663 if (!track->PropagateTo(xTrOrig+cl->GetX(),0.,0.)) return 0;
fddf8459 3664
1f3e997f 3665
150f264c 3666 AliCluster c(*cl);
3667 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3668 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3669
1c97ce2f 3670
3671 Int_t updated = track->UpdateMI(&c,chi2,index);
3672
3673 // Bring the track back to detector plane in ideal geometry
3674 if (!track->PropagateTo(xTrOrig,0.,0.)) return 0;
3675
3676 //if(!updated) printf("update failed\n");
3677 return updated;
e43c066c 3678}
150f264c 3679
44347160 3680//------------------------------------------------------------------------
e50912db 3681void AliITStrackerMI::GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3682{
3683 //
3684 //DCA sigmas parameterization
3685 //to be paramterized using external parameters in future
3686 //
3687 //
afd25725 3688 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3689 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3690}
e50912db 3691//------------------------------------------------------------------------
e43c066c 3692void AliITStrackerMI::SignDeltas( TObjArray *ClusterArray, Float_t vz)
3693{
3694 //
3695 //
3696 Int_t entries = ClusterArray->GetEntriesFast();
3697 if (entries<4) return;
00a7cc50 3698 AliITSRecPoint* cluster = (AliITSRecPoint*)ClusterArray->At(0);
e43c066c 3699 Int_t layer = cluster->GetLayer();
3700 if (layer>1) return;
3701 Int_t index[10000];
3702 Int_t ncandidates=0;
3703 Float_t r = (layer>0)? 7:4;
3704 //
3705 for (Int_t i=0;i<entries;i++){
00a7cc50 3706 AliITSRecPoint* cl0 = (AliITSRecPoint*)ClusterArray->At(i);
e43c066c 3707 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3708 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3709 index[ncandidates] = i; //candidate to belong to delta electron track
3710 ncandidates++;
3711 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3712 cl0->SetDeltaProbability(1);
3713 }
3714 }
3715 //
3716 //
3717 //
3718 for (Int_t i=0;i<ncandidates;i++){
00a7cc50 3719 AliITSRecPoint* cl0 = (AliITSRecPoint*)ClusterArray->At(index[i]);
e43c066c 3720 if (cl0->GetDeltaProbability()>0.8) continue;
3721 //
3722 Int_t ncl = 0;
3723 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3724 sumy=sumz=sumy2=sumyz=sumw=0.0;
3725 for (Int_t j=0;j<ncandidates;j++){
3726 if (i==j) continue;
00a7cc50 3727 AliITSRecPoint* cl1 = (AliITSRecPoint*)ClusterArray->At(index[j]);
e43c066c 3728 //
3729 Float_t dz = cl0->GetZ()-cl1->GetZ();
3730 Float_t dy = cl0->GetY()-cl1->GetY();
3731 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3732 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3733 y[ncl] = cl1->GetY();
3734 z[ncl] = cl1->GetZ();
3735 sumy+= y[ncl]*weight;
3736 sumz+= z[ncl]*weight;
3737 sumy2+=y[ncl]*y[ncl]*weight;
3738 sumyz+=y[ncl]*z[ncl]*weight;
3739 sumw+=weight;
3740 ncl++;
3741 }
3742 }
3743 if (ncl<4) continue;
3744 Float_t det = sumw*sumy2 - sumy*sumy;
3745 Float_t delta=1000;
3746 if (TMath::Abs(det)>0.01){
3747 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3748 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3749 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3750 }
3751 else{
3752 Float_t z0 = sumyz/sumy;
3753 delta = TMath::Abs(cl0->GetZ()-z0);
3754 }
3755 if ( delta<0.05) {
3756 cl0->SetDeltaProbability(1-20.*delta);
3757 }
3758 }
3759}
44347160 3760//------------------------------------------------------------------------
15dd636f 3761void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3762{
3763 //
3764 //
3765 track->UpdateESDtrack(flags);
b9671574 3766 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3767 if (oldtrack) delete oldtrack;
b9671574 3768 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3769 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
628e7bb0 3770 printf("Problem\n");
3771 }
e43c066c 3772}
44347160 3773//------------------------------------------------------------------------
81e97e0d 3774Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3775 //
ae00569a 3776 // Get nearest upper layer close to the point xr.
81e97e0d 3777 // rough approximation
3778 //
bf6adc12 3779 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3780 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3781 Int_t res =6;
3782 for (Int_t i=0;i<6;i++){
bf6adc12 3783 if (radius<kRadiuses[i]){
81e97e0d 3784 res =i;
3785 break;
3786 }
3787 }
3788 return res;
3789}
44347160 3790//------------------------------------------------------------------------
af885e0f 3791void AliITStrackerMI::UpdateTPCV0(AliESDEvent *event){
81e97e0d 3792 //
3793 //try to update, or reject TPC V0s
3794 //
d6a49f20 3795 Int_t nv0s = event->GetNumberOfV0s();
81e97e0d 3796 Int_t nitstracks = fTrackHypothesys.GetEntriesFast();
51ad6848 3797
81e97e0d 3798 for (Int_t i=0;i<nv0s;i++){
d6a49f20 3799 AliESDv0 * vertex = event->GetV0(i);
81e97e0d 3800 Int_t ip = vertex->GetIndex(0);
3801 Int_t im = vertex->GetIndex(1);
3802 //
3803 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)fTrackHypothesys.At(ip):0;
3804 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)fTrackHypothesys.At(im):0;
3805 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;
3806 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;
3807 //
3808 //
3809 if (trackp){
b9671574 3810 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){
3811 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);
3812 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100);
81e97e0d 3813 }
3814 }
51ad6848 3815
81e97e0d 3816 if (trackm){
b9671574 3817 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){
3818 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);
3819 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100);
81e97e0d 3820 }
3821 }
3822 if (vertex->GetStatus()==-100) continue;
3823 //
b75d63a7 3824 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
3825 Int_t clayer = GetNearestLayer(xrp); //I.B.
81e97e0d 3826 vertex->SetNBefore(clayer); //
3827 vertex->SetChi2Before(9*clayer); //
3828 vertex->SetNAfter(6-clayer); //
3829 vertex->SetChi2After(0); //
3830 //
3831 if (clayer >1 ){ // calculate chi2 before vertex
3832 Float_t chi2p = 0, chi2m=0;
3833 //
3834 if (trackp){
3835 for (Int_t ilayer=0;ilayer<clayer;ilayer++){
b9671574 3836 if (trackp->GetClIndex(ilayer)>0){
3837 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+
3838 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));
81e97e0d 3839 }
3840 else{
3841 chi2p+=9;
3842 }
3843 }
3844 }else{
3845 chi2p = 9*clayer;
3846 }
3847 //
3848 if (trackm){
3849 for (Int_t ilayer=0;ilayer<clayer;ilayer++){
b9671574 3850 if (trackm->GetClIndex(ilayer)>0){
3851 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+
3852 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));
81e97e0d 3853 }
3854 else{
3855 chi2m+=9;
3856 }
3857 }
3858 }else{
3859 chi2m = 9*clayer;
3860 }
3861 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));
3862 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex
3863 }
3864
3865 if (clayer < 5 ){ // calculate chi2 after vertex
3866 Float_t chi2p = 0, chi2m=0;
3867 //
6c94f330 3868 if (trackp&&TMath::Abs(trackp->GetTgl())<1.){
81e97e0d 3869 for (Int_t ilayer=clayer;ilayer<6;ilayer++){
b9671574 3870 if (trackp->GetClIndex(ilayer)>0){
3871 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+
3872 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));
81e97e0d 3873 }
3874 else{
3875 chi2p+=9;
3876 }
3877 }
3878 }else{
3879 chi2p = 0;
3880 }
3881 //
6c94f330 3882 if (trackm&&TMath::Abs(trackm->GetTgl())<1.){
81e97e0d 3883 for (Int_t ilayer=clayer;ilayer<6;ilayer++){
b9671574 3884 if (trackm->GetClIndex(ilayer)>0){
3885 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+
3886 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));
81e97e0d 3887 }
3888 else{
3889 chi2m+=9;
3890 }
3891 }
3892 }else{
3893 chi2m = 0;
3894 }
3895 vertex->SetChi2After(TMath::Max(chi2p,chi2m));
3896 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS
3897 }
3898 }
3899 //
3900}
44347160 3901//------------------------------------------------------------------------
e50912db 3902void AliITStrackerMI::FindV02(AliESDEvent *event)
e43c066c 3903{
3904 //
81e97e0d 3905 // V0 finder
3906 //
3907 // Cuts on DCA - R dependent
3908 // max distance DCA between 2 tracks cut
3909 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);
3910 //
3911 const Float_t kMaxDist0 = 0.1;
3912 const Float_t kMaxDist1 = 0.1;
3913 const Float_t kMaxDist = 1;
3914 const Float_t kMinPointAngle = 0.85;
3915 const Float_t kMinPointAngle2 = 0.99;
3916 const Float_t kMinR = 0.5;
3917 const Float_t kMaxR = 220;
3918 //const Float_t kCausality0Cut = 0.19;
3919 //const Float_t kLikelihood01Cut = 0.25;
3920 //const Float_t kPointAngleCut = 0.9996;
3921 const Float_t kCausality0Cut = 0.19;
3922 const Float_t kLikelihood01Cut = 0.45;
3923 const Float_t kLikelihood1Cut = 0.5;
3924 const Float_t kCombinedCut = 0.55;
3925
3926 //
3927 //
3928 TTreeSRedirector &cstream = *fDebugStreamer;
3929 Int_t ntracks = event->GetNumberOfTracks();
3930 Int_t nitstracks = fTrackHypothesys.GetEntriesFast();
3931 fOriginal.Expand(ntracks);
3932 fTrackHypothesys.Expand(ntracks);
3933 fBestHypothesys.Expand(ntracks);
3934 //
3935 AliHelix * helixes = new AliHelix[ntracks+2];
3936 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain
3937 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain
3938 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain
3939 Bool_t * forbidden = new Bool_t [ntracks+2];
3940 Int_t *itsmap = new Int_t [ntracks+2];
3941 Float_t *dist = new Float_t[ntracks+2];
3942 Float_t *normdist0 = new Float_t[ntracks+2];
3943 Float_t *normdist1 = new Float_t[ntracks+2];
3944 Float_t *normdist = new Float_t[ntracks+2];
3945 Float_t *norm = new Float_t[ntracks+2];
3946 Float_t *maxr = new Float_t[ntracks+2];
3947 Float_t *minr = new Float_t[ntracks+2];
3948 Float_t *minPointAngle= new Float_t[ntracks+2];
3949 //
6c94f330 3950 AliV0 *pvertex = new AliV0;
81e97e0d 3951 AliITStrackMI * dummy= new AliITStrackMI;
3952 dummy->SetLabel(0);
3953 AliITStrackMI trackat0; //temporary track for DCA calculation
e43c066c 3954 //
81e97e0d 3955 Float_t primvertex[3]={GetX(),GetY(),GetZ()};
628e7bb0 3956 //
afd25725 3957 // make ITS - ESD map
e43c066c 3958 //
81e97e0d 3959 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {
3960 itsmap[itrack] = -1;
3961 forbidden[itrack] = kFALSE;
3962 maxr[itrack] = kMaxR;
3963 minr[itrack] = kMinR;
3964 minPointAngle[itrack] = kMinPointAngle;
3965 }
3966 for (Int_t itrack=0;itrack<nitstracks;itrack++){
3967 AliITStrackMI * original = (AliITStrackMI*)(fOriginal.At(itrack));
b9671574 3968 Int_t esdindex = original->GetESDtrack()->GetID();
81e97e0d 3969 itsmap[esdindex] = itrack;
3970 }
3971 //
afd25725 3972 // create ITS tracks from ESD tracks if not done before
81e97e0d 3973 //
3974 for (Int_t itrack=0;itrack<ntracks;itrack++){
3975 if (itsmap[itrack]>=0) continue;
3976 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));
791f9a2a 3977 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());
3978 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ();
b9671574 3979 tpctrack->GetDZ(GetX(),GetY(),GetZ(),tpctrack->GetDP()); //I.B.
3980 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){
81e97e0d 3981 // tracks which can reach inner part of ITS
3982 // propagate track to outer its volume - with correction for material
afd25725 3983 CorrectForTPCtoITSDeadZoneMaterial(tpctrack);
81e97e0d 3984 }
3985 itsmap[itrack] = nitstracks;
3986 fOriginal.AddAt(tpctrack,nitstracks);
3987 nitstracks++;
3988 }
3989 //
3990 // fill temporary arrays
3991 //
3992 for (Int_t itrack=0;itrack<ntracks;itrack++){
3993 AliESDtrack * esdtrack = event->GetTrack(itrack);
3994 Int_t itsindex = itsmap[itrack];
3995 AliITStrackMI *original = (AliITStrackMI*)fOriginal.At(itsmap[itrack]);
3996 if (!original) continue;
3997 AliITStrackMI *bestConst = 0;
3998 AliITStrackMI *bestLong = 0;
3999 AliITStrackMI *best = 0;
4000 //
628e7bb0 4001 //
81e97e0d 4002 TObjArray * array = (TObjArray*) fTrackHypothesys.At(itsindex);
4003 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();
4004 // Get best track with vertex constrain
628e7bb0 4005 for (Int_t ih=0;ih<hentries;ih++){
4006 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
b9671574 4007 if (!trackh->GetConstrain()) continue;
81e97e0d 4008 if (!bestConst) bestConst = trackh;
b9671574 4009 if (trackh->GetNumberOfClusters()>5.0){
81e97e0d 4010 bestConst = trackh; // full track - with minimal chi2
4011 break;
4012 }
b9671574 4013 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue;
81e97e0d 4014 bestConst = trackh;
628e7bb0 4015 break;
81e97e0d 4016 }
4017 // Get best long track without vertex constrain and best track without vertex constrain
628e7bb0 4018 for (Int_t ih=0;ih<hentries;ih++){
4019 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
b9671574 4020 if (trackh->GetConstrain()) continue;
81e97e0d 4021 if (!best) best = trackh;
4022 if (!bestLong) bestLong = trackh;
b9671574 4023 if (trackh->GetNumberOfClusters()>5.0){
81e97e0d 4024 bestLong = trackh; // full track - with minimal chi2
4025 break;
4026 }
b9671574 4027 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue;
81e97e0d 4028 bestLong = trackh;
628e7bb0 4029 }
81e97e0d 4030 if (!best) {
4031 best = original;
4032 bestLong = original;
628e7bb0 4033 }
6c94f330 4034 //I.B. trackat0 = *bestLong;
420c3064 4035 new (&trackat0) AliITStrackMI(*bestLong);
81e97e0d 4036 Double_t xx,yy,zz,alpha;
4037 bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz);
4038 alpha = TMath::ATan2(yy,xx);
4039 trackat0.Propagate(alpha,0);
4040 // calculate normalized distances to the vertex
628e7bb0 4041 //
6c94f330 4042 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));
b9671574 4043 if ( bestLong->GetNumberOfClusters()>3 ){
6c94f330 4044 dist[itsindex] = trackat0.GetY();
4045 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());
4046 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);
4047 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));
81e97e0d 4048 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
29641977 4049 if (!bestConst){
b9671574 4050 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;
4051 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;
4052 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;
29641977 4053 }else{
b9671574 4054 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;
4055 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;
29641977 4056 }
81e97e0d 4057 }
4058 else{
b9671574 4059 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){
4060 dist[itsindex] = bestConst->GetD(0);
4061 norm[itsindex] = bestConst->GetDnorm(0);
4062 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);
4063 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);
81e97e0d 4064 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
4065 }else{
6c94f330 4066 dist[itsindex] = trackat0.GetY();
4067 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());
4068 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);
4069 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));
81e97e0d 4070 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
6c94f330 4071 if (TMath::Abs(trackat0.GetTgl())>1.05){
67c1e979 4072 if (normdist[itsindex]<3) forbidden[itsindex]=kTRUE;
4073 if (normdist[itsindex]>3) {
4074 minr[itsindex] = TMath::Max(Float_t(40.),minr[itsindex]);
4075 }
81e97e0d 4076 }
4077 }
4078 }
628e7bb0 4079 //
81e97e0d 4080 //-----------------------------------------------------------
4081 //Forbid primary track candidates -
628e7bb0 4082 //
81e97e0d 4083 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");
4084 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");
4085 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");
4086 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");
4087 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");
4088 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");
4089 //-----------------------------------------------------------
4090 if (bestConst){
b9671574 4091 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5) forbidden[itsindex]=kTRUE;
4092 if (normdist[itsindex]<3 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5) forbidden[itsindex]=kTRUE;
4093 if (normdist[itsindex]<2 && bestConst->GetClIndex(0)>0 && bestConst->GetClIndex(1)>0 ) forbidden[itsindex]=kTRUE;
4094 if (normdist[itsindex]<1 && bestConst->GetClIndex(0)>0) forbidden[itsindex]=kTRUE;
4095 if (normdist[itsindex]<4 && bestConst->GetNormChi2(0)<2) forbidden[itsindex]=kTRUE;
4096 if (normdist[itsindex]<5 && bestConst->GetNormChi2(0)<1) forbidden[itsindex]=kTRUE;
4097 if (bestConst->GetNormChi2(0)<2.5) {
81e97e0d 4098 minPointAngle[itsindex]= 0.9999;
4099 maxr[itsindex] = 10;
628e7bb0 4100 }
e43c066c 4101 }
81e97e0d 4102 //
4103 //forbid daughter kink candidates
4104 //
4105 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;
4106 Bool_t isElectron = kTRUE;
29641977 4107 Bool_t isProton = kTRUE;
81e97e0d 4108 Double_t pid[5];
4109 esdtrack->GetESDpid(pid);
4110 for (Int_t i=1;i<5;i++){
4111 if (pid[0]<pid[i]) isElectron= kFALSE;
29641977 4112 if (pid[4]<pid[i]) isProton= kFALSE;
81e97e0d 4113 }
4114 if (isElectron){
4115 forbidden[itsindex]=kFALSE;
29641977 4116 normdist[itsindex]*=-1;
4117 }
4118 if (isProton){
4119 if (normdist[itsindex]>2) forbidden[itsindex]=kFALSE;
4120 normdist[itsindex]*=-1;
81e97e0d 4121 }
29641977 4122
81e97e0d 4123 //
4124 // Causality cuts in TPC volume
4125 //
4126 if (esdtrack->GetTPCdensity(0,10) >0.6) maxr[itsindex] = TMath::Min(Float_t(110),maxr[itsindex]);
4127 if (esdtrack->GetTPCdensity(10,30)>0.6) maxr[itsindex] = TMath::Min(Float_t(120),maxr[itsindex]);
4128 if (esdtrack->GetTPCdensity(20,40)>0.6) maxr[itsindex] = TMath::Min(Float_t(130),maxr[itsindex]);
4129 if (esdtrack->GetTPCdensity(30,50)>0.6) maxr[itsindex] = TMath::Min(Float_t(140),maxr[itsindex]);
4130 //
b9671574 4131 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=100;
81e97e0d 4132 //
4133 //
29641977 4134 if (kFALSE){
81e97e0d 4135 cstream<<"Track"<<
4136 "Tr0.="<<best<<
4137 "Tr1.="<<((bestConst)? bestConst:dummy)<<
4138 "Tr2.="<<bestLong<<
4139 "Tr3.="<<&trackat0<<
4140 "Esd.="<<esdtrack<<
4141 "Dist="<<dist[itsindex]<<
4142 "ND0="<<normdist0[itsindex]<<
4143 "ND1="<<normdist1[itsindex]<<
4144 "ND="<<normdist[itsindex]<<
4145 "Pz="<<primvertex[2]<<
4146 "Forbid="<<forbidden[itsindex]<<
4147 "\n";
4148 //
4149 }
4150 trackarray.AddAt(best,itsindex);
4151 trackarrayc.AddAt(bestConst,itsindex);
4152 trackarrayl.AddAt(bestLong,itsindex);
4153 new (&helixes[itsindex]) AliHelix(*best);
e43c066c 4154 }
628e7bb0 4155 //
4156 //
81e97e0d 4157 //
4158 // first iterration of V0 finder
4159 //
4160 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){
4161 Int_t itrack0 = itsmap[iesd0];
4162 if (forbidden[itrack0]) continue;
4163 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);
4164 if (!btrack0) continue;
420c3064 4165 if (btrack0->GetSign()>0) continue;
628e7bb0 4166 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);
4167 //
81e97e0d 4168 for (Int_t iesd1=0;iesd1<ntracks;iesd1++){
4169 Int_t itrack1 = itsmap[iesd1];
4170 if (forbidden[itrack1]) continue;
4171
4172 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1);
4173 if (!btrack1) continue;
420c3064 4174 if (btrack1->GetSign()<0) continue;
81e97e0d 4175 Bool_t isGold = kFALSE;
4176 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){
4177 isGold = kTRUE;
628e7bb0 4178 }
81e97e0d 4179 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);
4180 AliHelix &h1 = helixes[itrack0];
4181 AliHelix &h2 = helixes[itrack1];
628e7bb0 4182 //
81e97e0d 4183 // find linear distance
4184 Double_t rmin =0;
628e7bb0 4185 //
51ad6848 4186 //
51ad6848 4187 //
81e97e0d 4188 Double_t phase[2][2],radius[2];
4189 Int_t points = h1.GetRPHIintersections(h2, phase, radius);
4190 if (points==0) continue;
c49fe0bf 4191 Double_t delta[2]={1000000,1000000};
81e97e0d 4192 rmin = radius[0];
4193 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);
4194 if (points==2){
4195 if (radius[1]<rmin) rmin = radius[1];
4196 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);
4197 }
4198 rmin = TMath::Sqrt(rmin);
4199 Double_t distance = 0;
4200 Double_t radiusC = 0;
4201 Int_t iphase = 0;
c49fe0bf 4202 if (points==1 || delta[0]<delta[1]){
81e97e0d 4203 distance = TMath::Sqrt(delta[0]);
4204 radiusC = TMath::Sqrt(radius[0]);
4205 }else{
4206 distance = TMath::Sqrt(delta[1]);
4207 radiusC = TMath::Sqrt(radius[1]);
4208 iphase=1;
4209 }
4210 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])) continue;
4211 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])) continue;
4212 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1));
4213 if (distance>maxDist) continue;
4214 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);
4215 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) continue;
628e7bb0 4216 //
51ad6848 4217 //
81e97e0d 4218 // Double_t distance = TestV0(h1,h2,pvertex,rmin);
51ad6848 4219 //
81e97e0d 4220 // if (distance>maxDist) continue;
4221 // if (pvertex->GetRr()<kMinR) continue;
4222 // if (pvertex->GetRr()>kMaxR) continue;
4223 AliITStrackMI * track0=btrack0;
4224 AliITStrackMI * track1=btrack1;
4225 // if (pvertex->GetRr()<3.5){
4226 if (radiusC<3.5){
4227 //use longest tracks inside the pipe
4228 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);
4229 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);
4230 }
51ad6848 4231 //
4232 //
b75d63a7 4233 pvertex->SetParamN(*track0);
4234 pvertex->SetParamP(*track1);
81e97e0d 4235 pvertex->Update(primvertex);
b9671574 4236 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters
67c1e979 4237
81e97e0d 4238 if (pvertex->GetRr()<kMinR) continue;
4239 if (pvertex->GetRr()>kMaxR) continue;
b75d63a7 4240 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle) continue;
4241//Bo: if (pvertex->GetDist2()>maxDist) continue;
4242 if (pvertex->GetDcaV0Daughters()>maxDist) continue;
4243//Bo: pvertex->SetLab(0,track0->GetLabel());
4244//Bo: pvertex->SetLab(1,track1->GetLabel());
b9671574 4245 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
4246 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
81e97e0d 4247 //
4248 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy;
4249 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;
51ad6848 4250
81e97e0d 4251 //
4252 //
4253 TObjArray * array0b = (TObjArray*)fBestHypothesys.At(itrack0);
513ab112 4254 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<1.1) {
4255 fCurrentEsdTrack = itrack0;
81e97e0d 4256 FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack0),itrack0, kFALSE);
513ab112 4257 }
81e97e0d 4258 TObjArray * array1b = (TObjArray*)fBestHypothesys.At(itrack1);
513ab112 4259 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<1.1) {
4260 fCurrentEsdTrack = itrack1;
81e97e0d 4261 FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack1),itrack1, kFALSE);
513ab112 4262 }
81e97e0d 4263 //
4264 AliITStrackMI * track0b = (AliITStrackMI*)fOriginal.At(itrack0);
4265 AliITStrackMI * track1b = (AliITStrackMI*)fOriginal.At(itrack1);
4266 AliITStrackMI * track0l = (AliITStrackMI*)fOriginal.At(itrack0);
4267 AliITStrackMI * track1l = (AliITStrackMI*)fOriginal.At(itrack1);
4268
4269 Float_t minchi2before0=16;
4270 Float_t minchi2before1=16;
4271 Float_t minchi2after0 =16;
4272 Float_t minchi2after1 =16;
b75d63a7 4273 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
4274 Int_t maxLayer = GetNearestLayer(xrp); //I.B.
81e97e0d 4275
4276 if (array0b) for (Int_t i=0;i<5;i++){
4277 // best track after vertex
4278 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);
4279 if (!btrack) continue;
b9671574 4280 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack;
29641977 4281 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {
6c94f330 4282 if (btrack->GetX()<pvertex->GetRr()-2.) {
b9671574 4283 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){
81e97e0d 4284 Float_t sumchi2= 0;
4285 Float_t sumn = 0;
29641977 4286 if (maxLayer<3){ // take prim vertex as additional measurement
4287 if (normdist[itrack0]>0 && htrackc0){
97f754fa 4288 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);
29641977 4289 }else{
97f754fa 4290 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);
29641977 4291 }
4292 sumn += 3-maxLayer;
4293 }
81e97e0d 4294 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
97f754fa 4295 sumn+=1.;
b9671574 4296 if (!btrack->GetClIndex(ilayer)){
81e97e0d 4297 sumchi2+=25;
4298 continue;
4299 }else{
b9671574 4300 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);
97f754fa 4301 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 4302 if (fgLayers[ilayer].GetClusterTracks(itrack,c)>=0 && fgLayers[ilayer].GetClusterTracks(itrack,c)!=itrack0){
97f754fa 4303 sumchi2+=18.; //shared cluster
4304 break;
4305 }
4306 }
b9671574 4307 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));
4308 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer));
81e97e0d 4309 }
4310 }
4311 sumchi2/=sumn;
4312 if (sumchi2<minchi2before0) minchi2before0=sumchi2;
51ad6848 4313 }
81e97e0d 4314 continue; //safety space - Geo manager will give exact layer
51ad6848 4315 }
81e97e0d 4316 track0b = btrack;
b9671574 4317 minchi2after0 = btrack->GetNormChi2(i);
81e97e0d 4318 break;
4319 }
4320 if (array1b) for (Int_t i=0;i<5;i++){
4321 // best track after vertex
4322 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);
4323 if (!btrack) continue;
b9671574 4324 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack;
29641977 4325 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){
6c94f330 4326 if (btrack->GetX()<pvertex->GetRr()-2){
b9671574 4327 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){
81e97e0d 4328 Float_t sumchi2= 0;
4329 Float_t sumn = 0;
29641977 4330 if (maxLayer<3){ // take prim vertex as additional measurement
4331 if (normdist[itrack1]>0 && htrackc1){
97f754fa 4332 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);
29641977 4333 }else{
97f754fa 4334 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);
29641977 4335 }
4336 sumn += 3-maxLayer;
4337 }
81e97e0d 4338 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
4339 sumn+=1.;
b9671574 4340 if (!btrack->GetClIndex(ilayer)){
81e97e0d 4341 sumchi2+=30;
4342 continue;
4343 }else{
b9671574 4344 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);
97f754fa 4345 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 4346 if (fgLayers[ilayer].GetClusterTracks(itrack,c)>=0 && fgLayers[ilayer].GetClusterTracks(itrack,c)!=itrack1){
97f754fa 4347 sumchi2+=18.; //shared cluster
4348 break;
4349 }
4350 }
b9671574 4351 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));
4352 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer));
81e97e0d 4353 }
4354 }
4355 sumchi2/=sumn;
4356 if (sumchi2<minchi2before1) minchi2before1=sumchi2;
51ad6848 4357 }
81e97e0d 4358 continue; //safety space - Geo manager will give exact layer
51ad6848 4359 }
81e97e0d 4360 track1b = btrack;
b9671574 4361 minchi2after1 = btrack->GetNormChi2(i);
81e97e0d 4362 break;
e43c066c 4363 }
628e7bb0 4364 //
81e97e0d 4365 // position resolution - used for DCA cut
6c94f330 4366 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+
4367 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+
4368 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());
81e97e0d 4369 sigmad =TMath::Sqrt(sigmad)+0.04;
4370 if (pvertex->GetRr()>50){
4371 Double_t cov0[15],cov1[15];
b9671574 4372 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);
4373 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);
81e97e0d 4374 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+
4375 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+
4376 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);
4377 sigmad =TMath::Sqrt(sigmad)+0.05;
4378 }
4379 //
6c94f330 4380 AliV0 vertex2;
b75d63a7 4381 vertex2.SetParamN(*track0b);
4382 vertex2.SetParamP(*track1b);
81e97e0d 4383 vertex2.Update(primvertex);
b75d63a7 4384 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){
4385 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){
4386 pvertex->SetParamN(*track0b);
4387 pvertex->SetParamP(*track1b);
81e97e0d 4388 pvertex->Update(primvertex);
b9671574 4389 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters
4390 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
4391 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
81e97e0d 4392 }
4393 pvertex->SetDistSigma(sigmad);
b75d63a7 4394 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad);
29641977 4395 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);
628e7bb0 4396 //
81e97e0d 4397 // define likelihhod and causalities
628e7bb0 4398 //
81e97e0d 4399 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26;
29641977 4400 if (maxLayer<1){
4401 Float_t fnorm0 = normdist[itrack0];
4402 if (fnorm0<0) fnorm0*=-3;
4403 Float_t fnorm1 = normdist[itrack1];
4404 if (fnorm1<0) fnorm1*=-3;
4405 if (pvertex->GetAnglep()[2]>0.1 || (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 || pvertex->GetRr()<3){
4406 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);
4407 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);
67c1e979 4408 }
81e97e0d 4409 pvertex->SetChi2Before(normdist[itrack0]);
4410 pvertex->SetChi2After(normdist[itrack1]);
4411 pvertex->SetNAfter(0);
4412 pvertex->SetNBefore(0);
4413 }else{
4414 pvertex->SetChi2Before(minchi2before0);
4415 pvertex->SetChi2After(minchi2before1);
29641977 4416 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){
4417 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);
4418 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);
4419 }
4420 pvertex->SetNAfter(maxLayer);
4421 pvertex->SetNBefore(maxLayer);
628e7bb0 4422 }
81e97e0d 4423 if (pvertex->GetRr()<90){
f941f7fa 4424 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
4425 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
628e7bb0 4426 }
81e97e0d 4427 if (pvertex->GetRr()<20){
4428 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;
4429 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;
e43c066c 4430 }
628e7bb0 4431 //
81e97e0d 4432 pvertex->SetCausality(pb0,pb1,pa0,pa1);
628e7bb0 4433 //
81e97e0d 4434 // Likelihood calculations - apply cuts
4435 //
4436 Bool_t v0OK = kTRUE;
4437 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];
b75d63a7 4438 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];
81e97e0d 4439 p12 = TMath::Sqrt(p12); // "mean" momenta
4440 Float_t sigmap0 = 0.0001+0.001/(0.1+pvertex->GetRr());
4441 Float_t sigmap = 0.5*sigmap0*(0.6+0.4*p12); // "resolution: of point angle - as a function of radius and momenta
4442
bf6adc12 4443 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);
f941f7fa 4444 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*
4445 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));
628e7bb0 4446 //
b75d63a7 4447 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);
4448 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();
4449 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<0.5)*(lDistNorm<5);
4450
4451 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+
4452 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+
4453 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+
4454 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);
628e7bb0 4455 //
bf6adc12 4456 if (causalityA<kCausality0Cut) v0OK = kFALSE;
4457 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut) v0OK = kFALSE;
4458 if (likelihood1<kLikelihood1Cut) v0OK = kFALSE;
4459 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut) v0OK = kFALSE;
81e97e0d 4460
628e7bb0 4461 //
628e7bb0 4462 //
67c1e979 4463 if (kFALSE){
81e97e0d 4464 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;
4465 cstream<<"It0"<<
4466 "Tr0.="<<track0<< //best without constrain
4467 "Tr1.="<<track1<< //best without constrain
4468 "Tr0B.="<<track0b<< //best without constrain after vertex
4469 "Tr1B.="<<track1b<< //best without constrain after vertex
4470 "Tr0C.="<<htrackc0<< //best with constrain if exist
4471 "Tr1C.="<<htrackc1<< //best with constrain if exist
4472 "Tr0L.="<<track0l<< //longest best
4473 "Tr1L.="<<track1l<< //longest best
b9671574 4474 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params
4475 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params
81e97e0d 4476 "V0.="<<pvertex<< //vertex properties
4477 "V0b.="<<&vertex2<< //vertex properties at "best" track
4478 "ND0="<<normdist[itrack0]<< //normalize distance for track0
4479 "ND1="<<normdist[itrack1]<< //normalize distance for track1
4480 "Gold="<<gold<< //
4481 // "RejectBase="<<rejectBase<< //rejection in First itteration
4482 "OK="<<v0OK<<
4483 "rmin="<<rmin<<
4484 "sigmad="<<sigmad<<
4485 "\n";
4486 }
4487 //if (rejectBase) continue;
628e7bb0 4488 //
81e97e0d 4489 pvertex->SetStatus(0);
4490 // if (rejectBase) {
4491 // pvertex->SetStatus(-100);
4492 //}
b75d63a7 4493 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {
4494 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());
4495 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg
4496 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos
67c1e979 4497 if (v0OK){
4498 // AliV0vertex vertexjuri(*track0,*track1);
4499 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());
4500 // event->AddV0(&vertexjuri);
81e97e0d 4501 pvertex->SetStatus(100);
4502 }
d6a49f20 4503 pvertex->SetOnFlyStatus(kTRUE);
b75d63a7 4504 pvertex->ChangeMassHypothesis(kK0Short);
d6a49f20 4505 event->AddV0(pvertex);
628e7bb0 4506 }
51ad6848 4507 }
4508 }
628e7bb0 4509 //
4510 //
81e97e0d 4511 // delete temporary arrays
4512 //
316c6cd9 4513 delete[] forbidden;
81e97e0d 4514 delete[] minPointAngle;
4515 delete[] maxr;
4516 delete[] minr;
4517 delete[] norm;
4518 delete[] normdist;
4519 delete[] normdist1;
4520 delete[] normdist0;
4521 delete[] dist;
4522 delete[] itsmap;
4523 delete[] helixes;
4524 delete pvertex;
e43c066c 4525}
44347160 4526//------------------------------------------------------------------------
af885e0f 4527void AliITStrackerMI::RefitV02(AliESDEvent *event)
67c1e979 4528{
4529 //
4530 //try to refit V0s in the third path of the reconstruction
4531 //
4532 TTreeSRedirector &cstream = *fDebugStreamer;
4533 //
d6a49f20 4534 Int_t nv0s = event->GetNumberOfV0s();
67c1e979 4535 Float_t primvertex[3]={GetX(),GetY(),GetZ()};
6c94f330 4536 AliV0 v0temp;
67c1e979 4537 for (Int_t iv0 = 0; iv0<nv0s;iv0++){
d6a49f20 4538 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);
67c1e979 4539 if (!v0mi) continue;
4540 Int_t itrack0 = v0mi->GetIndex(0);
4541 Int_t itrack1 = v0mi->GetIndex(1);
4542 AliESDtrack *esd0 = event->GetTrack(itrack0);
4543 AliESDtrack *esd1 = event->GetTrack(itrack1);
4544 if (!esd0||!esd1) continue;
4545 AliITStrackMI tpc0(*esd0);
4546 AliITStrackMI tpc1(*esd1);
b75d63a7 4547 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B.
4548 Double_t alpha =TMath::ATan2(y,x); //I.B.
67c1e979 4549 if (v0mi->GetRr()>85){
4550 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
b75d63a7 4551 v0temp.SetParamN(tpc0);
4552 v0temp.SetParamP(tpc1);
67c1e979 4553 v0temp.Update(primvertex);
29641977 4554 if (kFALSE) cstream<<"Refit"<<
67c1e979 4555 "V0.="<<v0mi<<
4556 "V0refit.="<<&v0temp<<
4557 "Tr0.="<<&tpc0<<
4558 "Tr1.="<<&tpc1<<
4559 "\n";
b75d63a7 4560 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4561 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4562 v0mi->SetParamN(tpc0);
4563 v0mi->SetParamP(tpc1);
67c1e979 4564 v0mi->Update(primvertex);
4565 }
4566 }
4567 continue;
4568 }
4569 if (v0mi->GetRr()>35){
afd25725 4570 CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
4571 CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
67c1e979 4572 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
b75d63a7 4573 v0temp.SetParamN(tpc0);
4574 v0temp.SetParamP(tpc1);
67c1e979 4575 v0temp.Update(primvertex);
29641977 4576 if (kFALSE) cstream<<"Refit"<<
67c1e979 4577 "V0.="<<v0mi<<
4578 "V0refit.="<<&v0temp<<
4579 "Tr0.="<<&tpc0<<
4580 "Tr1.="<<&tpc1<<
4581 "\n";
b75d63a7 4582 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4583 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4584 v0mi->SetParamN(tpc0);
4585 v0mi->SetParamP(tpc1);
67c1e979 4586 v0mi->Update(primvertex);
4587 }
4588 }
4589 continue;
4590 }
afd25725 4591 CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
4592 CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
67c1e979 4593 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
4594 if (RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){
b75d63a7 4595 v0temp.SetParamN(tpc0);
4596 v0temp.SetParamP(tpc1);
67c1e979 4597 v0temp.Update(primvertex);
29641977 4598 if (kFALSE) cstream<<"Refit"<<
67c1e979 4599 "V0.="<<v0mi<<
4600 "V0refit.="<<&v0temp<<
4601 "Tr0.="<<&tpc0<<
4602 "Tr1.="<<&tpc1<<
4603 "\n";
b75d63a7 4604 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4605 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
4606 v0mi->SetParamN(tpc0);
4607 v0mi->SetParamP(tpc1);
67c1e979 4608 v0mi->Update(primvertex);
4609 }
4610 }
4611 }
4612}
44347160 4613//------------------------------------------------------------------------
e50912db 4614void AliITStrackerMI::BuildMaterialLUT(TString material) {
4615 //--------------------------------------------------------------------
4616 // Fill a look-up table with mean material
4617 //--------------------------------------------------------------------
4618
4619 Int_t n=1000;
4620 Double_t mparam[7];
4621 Double_t point1[3],point2[3];
4622 Double_t phi,cosphi,sinphi,z;
4623 // 0-5 layers, 6 pipe, 7-8 shields
4624 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 7.5,25.0};
4625 Double_t rmax[9]={ 5.5, 7.3,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
4626
4627 Int_t ifirst=0,ilast=0;
4628 if(material.Contains("Pipe")) {
4629 ifirst=6; ilast=6;
4630 } else if(material.Contains("Shields")) {
4631 ifirst=7; ilast=8;
4632 } else if(material.Contains("Layers")) {
4633 ifirst=0; ilast=5;
4634 } else {
4635 Error("BuildMaterialLUT","Wrong layer name\n");
4636 }
4637
4638 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4639 Double_t param[5]={0.,0.,0.,0.,0.};
4640 for (Int_t i=0; i<n; i++) {
4641 phi = 2.*TMath::Pi()*gRandom->Rndm();
4642 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4643 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4644 point1[0] = rmin[imat]*cosphi;
4645 point1[1] = rmin[imat]*sinphi;
4646 point1[2] = z;
4647 point2[0] = rmax[imat]*cosphi;
4648 point2[1] = rmax[imat]*sinphi;
4649 point2[2] = z;
4650 AliTracker::MeanMaterialBudget(point1,point2,mparam);
4651 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4652 }
4653 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4654 if(imat<=5) {
4655 fxOverX0Layer[imat] = param[1];
4656 fxTimesRhoLayer[imat] = param[0]*param[4];
4657 } else if(imat==6) {
4658 fxOverX0Pipe = param[1];
4659 fxTimesRhoPipe = param[0]*param[4];
4660 } else if(imat==7) {
4661 fxOverX0Shield[0] = param[1];
4662 fxTimesRhoShield[0] = param[0]*param[4];
4663 } else if(imat==8) {
4664 fxOverX0Shield[1] = param[1];
4665 fxTimesRhoShield[1] = param[0]*param[4];
4666 }
4667 }
4668 /*
4669 printf("%s\n",material.Data());
4670 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4671 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4672 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4673 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4674 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4675 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4676 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4677 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4678 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4679 */
4680 return;
4681}
4682//------------------------------------------------------------------------
4683Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4684 TString direction) {
4685 //-------------------------------------------------------------------
4686 // Propagate beyond beam pipe and correct for material
4687 // (material budget in different ways according to fUseTGeo value)
4688 //-------------------------------------------------------------------
4689
4690 // Define budget mode:
4691 // 0: material from AliITSRecoParam (hard coded)
4692 // 1: material from TGeo (on the fly)
4693 // 2: material from lut
4694 // 3: material from TGeo (same for all hypotheses)
4695 Int_t mode;
4696 switch(fUseTGeo) {
4697 case 0:
4698 mode=0;
4699 break;
4700 case 1:
4701 mode=1;
4702 break;
4703 case 2:
4704 mode=2;
4705 break;
4706 case 3:
4707 if(fTrackingPhase.Contains("Clusters2Tracks"))
4708 { mode=3; } else { mode=1; }
4709 break;
4710 case 4:
4711 if(fTrackingPhase.Contains("Clusters2Tracks"))
4712 { mode=3; } else { mode=2; }
4713 break;
4714 default:
4715 mode=0;
4716 break;
4717 }
4718 if(fTrackingPhase.Contains("Default")) mode=0;
4719
4720 Int_t index=fCurrentEsdTrack;
4721
4722 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4723 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
4724 Double_t xToGo; t->GetLocalXat(rToGo,xToGo);
4725
4726 Double_t xOverX0,x0,lengthTimesMeanDensity;
4727 Bool_t anglecorr=kTRUE;
4728
4729 switch(mode) {
4730 case 0:
4731 xOverX0 = AliITSRecoParam::GetdPipe();
4732 x0 = AliITSRecoParam::GetX0Be();
4733 lengthTimesMeanDensity = xOverX0*x0;
4734 break;
4735 case 1:
4736 if (!t->PropagateToTGeo(xToGo,1)) return 0;
4737 return 1;
4738 break;
4739 case 2:
4740 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4741 xOverX0 = fxOverX0Pipe;
4742 lengthTimesMeanDensity = fxTimesRhoPipe;
4743 break;
4744 case 3:
4745 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4746 if(fxOverX0PipeTrks[index]<0) {
4747 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4748 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4749 (1.-t->GetSnp()*t->GetSnp()));
4750 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4751 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4752 return 1;
4753 }
4754 xOverX0 = fxOverX0PipeTrks[index];
4755 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
4756 break;
4757 }
4758
4759 lengthTimesMeanDensity *= dir;
4760
4761 if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
4762 if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
4763
4764 return 1;
4765}
4766//------------------------------------------------------------------------
4767Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4768 TString shield,
4769 TString direction) {
4770 //-------------------------------------------------------------------
4771 // Propagate beyond SPD or SDD shield and correct for material
4772 // (material budget in different ways according to fUseTGeo value)
4773 //-------------------------------------------------------------------
4774
4775 // Define budget mode:
4776 // 0: material from AliITSRecoParam (hard coded)
4777 // 1: material from TGeo (on the fly)
4778 // 2: material from lut
4779 // 3: material from TGeo (same for all hypotheses)
4780 Int_t mode;
4781 switch(fUseTGeo) {
4782 case 0:
4783 mode=0;
4784 break;
4785 case 1:
4786 mode=1;
4787 break;
4788 case 2:
4789 mode=2;
4790 break;
4791 case 3:
4792 if(fTrackingPhase.Contains("Clusters2Tracks"))
4793 { mode=3; } else { mode=1; }
4794 break;
4795 case 4:
4796 if(fTrackingPhase.Contains("Clusters2Tracks"))
4797 { mode=3; } else { mode=2; }
4798 break;
4799 default:
4800 mode=0;
4801 break;
4802 }
4803 if(fTrackingPhase.Contains("Default")) mode=0;
4804
4805 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4806 Double_t rToGo;
4807 Int_t shieldindex=0;
4808 if (shield.Contains("SDD")) { // SDDouter
4809 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4810 shieldindex=1;
4811 } else if (shield.Contains("SPD")) { // SPDouter
4812 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4813 shieldindex=0;
4814 } else {
4815 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4816 return 0;
4817 }
4818 Double_t xToGo; t->GetLocalXat(rToGo,xToGo);
4819
4820 Int_t index=2*fCurrentEsdTrack+shieldindex;
4821
4822 Double_t xOverX0,x0,lengthTimesMeanDensity;
4823 Bool_t anglecorr=kTRUE;
4824
4825 switch(mode) {
4826 case 0:
4827 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4828 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4829 lengthTimesMeanDensity = xOverX0*x0;
4830 break;
4831 case 1:
4832 if (!t->PropagateToTGeo(xToGo,1)) return 0;
4833 return 1;
4834 break;
4835 case 2:
4836 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4837 xOverX0 = fxOverX0Shield[shieldindex];
4838 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
4839 break;
4840 case 3:
4841 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4842 if(fxOverX0ShieldTrks[index]<0) {
4843 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4844 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4845 (1.-t->GetSnp()*t->GetSnp()));
4846 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4847 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4848 return 1;
4849 }
4850 xOverX0 = fxOverX0ShieldTrks[index];
4851 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
4852 break;
4853 }
4854
4855 lengthTimesMeanDensity *= dir;
4856
4857 if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
4858 if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
4859
4860 return 1;
4861}
4862//------------------------------------------------------------------------
4863Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4864 Int_t layerindex,
4865 Double_t oldGlobXYZ[3],
4866 TString direction) {
4867 //-------------------------------------------------------------------
4868 // Propagate beyond layer and correct for material
4869 // (material budget in different ways according to fUseTGeo value)
4870 //-------------------------------------------------------------------
4871
4872 // Define budget mode:
4873 // 0: material from AliITSRecoParam (hard coded)
4874 // 1: material from TGeo (on the fly)
4875 // 2: material from lut
4876 // 3: material from TGeo (same for all hypotheses)
4877 Int_t mode;
4878 switch(fUseTGeo) {
4879 case 0:
4880 mode=0;
4881 break;
4882 case 1:
4883 mode=1;
4884 break;
4885 case 2:
4886 mode=2;
4887 break;
4888 case 3:
4889 if(fTrackingPhase.Contains("Clusters2Tracks"))
4890 { mode=3; } else { mode=1; }
4891 break;
4892 case 4:
4893 if(fTrackingPhase.Contains("Clusters2Tracks"))
4894 { mode=3; } else { mode=2; }
4895 break;
4896 default:
4897 mode=0;
4898 break;
4899 }
4900 if(fTrackingPhase.Contains("Default")) mode=0;
4901
4902 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4903
4904 Double_t r=fgLayers[layerindex].GetR();
4905 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4906
4907 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
4908 Double_t xToGo; t->GetLocalXat(rToGo,xToGo);
4909
4910 Int_t index=6*fCurrentEsdTrack+layerindex;
4911
4912 // Bring the track beyond the material
4913 if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
4914 Double_t globXYZ[3];
4915 t->GetXYZ(globXYZ);
4916
4917 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
4918 Double_t mparam[7];
4919 Bool_t anglecorr=kTRUE;
4920
4921 switch(mode) {
4922 case 0:
4923 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4924 lengthTimesMeanDensity = xOverX0*x0;
4925 break;
4926 case 1:
4927 AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
4928 if(mparam[1]>900000) return 0;
4929 xOverX0=mparam[1];
4930 lengthTimesMeanDensity=mparam[0]*mparam[4];
4931 anglecorr=kFALSE;
4932 break;
4933 case 2:
4934 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4935 xOverX0 = fxOverX0Layer[layerindex];
4936 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
4937 break;
4938 case 3:
4939 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
4940 if(fxOverX0LayerTrks[index]<0) {
4941 AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
4942 if(mparam[1]>900000) return 0;
4943 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4944 (1.-t->GetSnp()*t->GetSnp()));
4945 xOverX0=mparam[1]/angle;
4946 lengthTimesMeanDensity=mparam[0]*mparam[4]/angle;
4947 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0);
4948 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity);
4949 }
4950 xOverX0 = fxOverX0LayerTrks[index];
4951 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
4952 break;
4953 }
4954
4955 lengthTimesMeanDensity *= dir;
4956
4957 if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
4958
4959 return 1;
4960}
4961//------------------------------------------------------------------------
4962void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4963 //-----------------------------------------------------------------
4964 // Initialize LUT for storing material for each prolonged track
4965 //-----------------------------------------------------------------
4966 fxOverX0PipeTrks = new Float_t[ntracks];
4967 fxTimesRhoPipeTrks = new Float_t[ntracks];
4968 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4969 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4970 fxOverX0LayerTrks = new Float_t[ntracks*6];
4971 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4972
4973 for(Int_t i=0; i<ntracks; i++) {
4974 fxOverX0PipeTrks[i] = -1.;
4975 fxTimesRhoPipeTrks[i] = -1.;
4976 }
4977 for(Int_t j=0; j<ntracks*2; j++) {
4978 fxOverX0ShieldTrks[j] = -1.;
4979 fxTimesRhoShieldTrks[j] = -1.;
4980 }
4981 for(Int_t k=0; k<ntracks*6; k++) {
4982 fxOverX0LayerTrks[k] = -1.;
4983 fxTimesRhoLayerTrks[k] = -1.;
4984 }
4985
4986 fNtracks = ntracks;
4987
4988 return;
4989}
4990//------------------------------------------------------------------------
4991void AliITStrackerMI::DeleteTrksMaterialLUT() {
4992 //-----------------------------------------------------------------
4993 // Delete LUT for storing material for each prolonged track
4994 //-----------------------------------------------------------------
4995 if(fxOverX0PipeTrks) {
4996 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4997 }
4998 if(fxOverX0ShieldTrks) {
4999 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
5000 }
5001
5002 if(fxOverX0LayerTrks) {
5003 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
5004 }
5005 if(fxTimesRhoPipeTrks) {
5006 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
5007 }
5008 if(fxTimesRhoShieldTrks) {
5009 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
5010 }
5011 if(fxTimesRhoLayerTrks) {
5012 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
5013 }
5014 return;
5015}
5016//------------------------------------------------------------------------
6518a6c5 5017Int_t AliITStrackerMI::CheckSkipLayer(AliITStrackMI *track,
5018 Int_t ilayer,Int_t idet) const {
2755f080 5019 //-----------------------------------------------------------------
5020 // This method is used to decide whether to allow a prolongation
5021 // without clusters, because we want to skip the layer.
5022 // In this case the return value is > 0:
5023 // return 1: the user requested to skip a layer
5024 // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
5025 //-----------------------------------------------------------------
e43c066c 5026
2755f080 5027 if (AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) return 1;
51ad6848 5028
2755f080 5029 if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
5030 // check if track will cross SPD outer layer
5031 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 5032 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 5033 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
5034 }
5035 }
51ad6848 5036
2755f080 5037 return 0;
5038}
5039//------------------------------------------------------------------------
23197852 5040Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 5041 Int_t ilayer,Int_t idet,
1c97ce2f 5042 Double_t dz,Double_t dy,
23197852 5043 Bool_t noClusters) const {
6518a6c5 5044 //-----------------------------------------------------------------
5045 // This method is used to decide whether to allow a prolongation
ae00569a 5046 // without clusters, because there is a dead zone in the road.
6518a6c5 5047 // In this case the return value is > 0:
5048 // return 1: dead zone at z=0,+-7cm in SPD
23197852 5049 // return 2: all road is "bad" (dead or noisy) from the OCDB
5050 // return 3: something "bad" (dead or noisy) from the OCDB
6518a6c5 5051 //-----------------------------------------------------------------
5052
5053 // check dead zones at z=0,+-7cm in the SPD
5054 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
5055 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
5056 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
5057 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
5058 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
5059 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
5060 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
5061 for (Int_t i=0; i<3; i++)
1c97ce2f 5062 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) return 1;
6518a6c5 5063 }
5064
23197852 5065 // check bad zones from OCDB
5066 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 5067
23197852 5068 if (idet<0) return 0;
ae00569a 5069
23197852 5070 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
5071
5072 // check if this detector is bad
5073 if (det.IsBad()) {
5074 //printf("lay %d bad detector %d\n",ilayer,idet);
5075 return 2;
5076 }
5077
5078 Int_t detType=-1;
5079 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
5080 if (ilayer==0 || ilayer==1) { // ---------- SPD
5081 detType = 0;
5082 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
5083 detType = 1;
5084 detSizeFactorX *= 2.;
5085 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
5086 detType = 2;
5087 }
5088 AliITSsegmentation *segm = (AliITSsegmentation*)fDetTypeRec->GetSegmentationModel(detType);
5089 if (detType==2) segm->SetLayer(ilayer+1);
5090 Float_t detSizeX = detSizeFactorX*segm->Dx();
5091 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
5092
5093 // check if the road overlaps with bad chips
5094 Float_t xloc,zloc;
5095 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 5096 Float_t zlocmin = zloc-dz;
5097 Float_t zlocmax = zloc+dz;
5098 Float_t xlocmin = xloc-dy;
5099 Float_t xlocmax = xloc+dy;
23197852 5100 Int_t chipsInRoad[100];
5101
5102 if (TMath::Max(TMath::Abs(xlocmin),TMath::Abs(xlocmax))>0.5*detSizeX ||
5103 TMath::Max(TMath::Abs(zlocmin),TMath::Abs(zlocmax))>0.5*detSizeZ) return 0;
5104 //printf("lay %d det %d zmim zmax %f %f xmin xmax %f %f %f %f\n",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,segm->Dx(),segm->Dz());
5105 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
5106 //printf("lay %d nChipsInRoad %d\n",ilayer,nChipsInRoad);
5107 if (!nChipsInRoad) return 0;
5108
5109 Bool_t anyBad=kFALSE,anyGood=kFALSE;
5110 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
5111 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
5112 //printf(" chip %d bad %d\n",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh]));
5113 if (det.IsChipBad(chipsInRoad[iCh])) {
5114 anyBad=kTRUE;
5115 } else {
5116 anyGood=kTRUE;
5117 }
6518a6c5 5118 }
5119
23197852 5120 if (!anyGood) return 2; // all chips in road are bad
5121
5122 if (anyBad) return 3; // at least a bad chip in road
5123
5124
5125 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
5126 || ilayer==4 || ilayer==5 // SSD
5127 || !noClusters) return 0;
5128
5129 // There are no clusters in road: check if there is at least
5130 // a bad SPD pixel or SDD anode
5131
5132 if(ilayer==1 || ilayer==3 || ilayer==5)
5133 idet += AliITSgeomTGeo::GetNLadders(ilayer)*AliITSgeomTGeo::GetNDetectors(ilayer);
5134
5135 //if (fITSChannelStatus->AnyBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax)) return 3;
5136
5137 if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
5138
6518a6c5 5139 return 0;
5140}
5141//------------------------------------------------------------------------
ae00569a 5142Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
5143 AliITStrackMI *track,
5144 Float_t &xloc,Float_t &zloc) const {
5145 //-----------------------------------------------------------------
5146 // Gives position of track in local module ref. frame
5147 //-----------------------------------------------------------------
5148
5149 xloc=0.;
5150 zloc=0.;
5151
5152 if(idet<0) return kFALSE;
5153
5154 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
5155
5156 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 5157
ae00569a 5158 Int_t det = idet - (lad-1)*ndet + 1;
5159
5160 Double_t xyzGlob[3],xyzLoc[3];
5161
1c97ce2f 5162 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
5163 // take into account the misalignment: xyz at real detector plane
5164 track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob);
ae00569a 5165
5166 AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc);
5167
5168 xloc = (Float_t)xyzLoc[0];
5169 zloc = (Float_t)xyzLoc[2];
5170
5171 return kTRUE;
5172}
5173//------------------------------------------------------------------------
7167ae53 5174Bool_t AliITStrackerMI::IsOKForPlaneEff(AliITStrackMI* track, Int_t ilayer) const {
0e91092f 5175//
5176// Method to be optimized further:
5177// Aim: decide whether a track can be used for PlaneEff evaluation
5178// the decision is taken based on the track quality at the layer under study
5179// no information on the clusters on this layer has to be used
5180// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
5181// the cut is done on number of sigmas from the boundaries
5182//
5183// Input: Actual track, layer [0,5] under study
5184// Output: none
5185// Return: kTRUE if this is a good track
7167ae53 5186//
5187// it will apply a pre-selection to obtain good quality tracks.
5188// Here also you will have the possibility to put a control on the
5189// impact point of the track on the basic block, in order to exclude border regions
5190// this will be done by calling a proper method of the AliITSPlaneEff class.
5191//
5192// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 5193// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
5194 if(!fPlaneEff)
a31a139f 5195 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 5196 AliITSlayer &layer=fgLayers[ilayer];
5197 Double_t r=layer.GetR();
8a32c4b5 5198 AliITStrackMI tmp(*track);
5199
5200// detector number
5201 Double_t phi,z;
5202 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
5203 Int_t idet=layer.FindDetectorIndex(phi,z);
5204 if(idet<0) { AliInfo(Form("cannot find detector"));
5205 return kFALSE;}
5206
5207 // here check if it has good Chi Square.
5208
5209 //propagate to the intersection with the detector plane
5210 const AliITSdetector &det=layer.GetDetector(idet);
5211 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
5212
5213 Float_t locx; //
5214 Float_t locz; //
0e91092f 5215 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 5216 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5217 if(key>fPlaneEff->Nblock()) return kFALSE;
5218 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
5219 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 5220 //***************
0e91092f 5221 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 5222 //
5223 //For the time being they are hard-wired, later on from AliITSRecoParam
0e91092f 5224 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
5225 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
5226 Double_t nsigz=4;
5227 Double_t nsigx=4;
5228 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5229 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5230 // done for RecPoints
8a32c4b5 5231
1c97ce2f 5232 // exclude tracks at boundary between detectors
0e91092f 5233 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 5234 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 5235 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 5236 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
5237 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 5238
0e91092f 5239 if ( (locx-dx < blockXmn+boundaryWidth) ||
5240 (locx+dx > blockXmx-boundaryWidth) ||
5241 (locz-dz < blockZmn+boundaryWidth) ||
5242 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 5243 return kTRUE;
7167ae53 5244}
5245//------------------------------------------------------------------------
5246void AliITStrackerMI::UseTrackForPlaneEff(AliITStrackMI* track, Int_t ilayer) {
5247//
5248// This Method has to be optimized! For the time-being it uses the same criteria
5249// as those used in the search of extra clusters for overlapping modules.
5250//
5251// Method Purpose: estabilish whether a track has produced a recpoint or not
5252// in the layer under study (For Plane efficiency)
5253//
5254// inputs: AliITStrackMI* track (pointer to a usable track)
5255// outputs: none
5256// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
5257// traversed by this very track. In details:
5258// - if a cluster can be associated to the track then call
5259// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
5260// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
5261//
a31a139f 5262 if(!fPlaneEff)
5263 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 5264 AliITSlayer &layer=fgLayers[ilayer];
5265 Double_t r=layer.GetR();
7167ae53 5266 AliITStrackMI tmp(*track);
5267
5268// detector number
5269 Double_t phi,z;
5270 if (!tmp.GetPhiZat(r,phi,z)) return;
5271 Int_t idet=layer.FindDetectorIndex(phi,z);
5272
8a32c4b5 5273 if(idet<0) { AliInfo(Form("cannot find detector"));
5274 return;}
7167ae53 5275
7167ae53 5276
0e91092f 5277//propagate to the intersection with the detector plane
7167ae53 5278 const AliITSdetector &det=layer.GetDetector(idet);
5279 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 5280
1c97ce2f 5281
0e91092f 5282//***************
5283// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5284//
5285 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5286 TMath::Sqrt(tmp.GetSigmaZ2() +
5287 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5288 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5289 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5290 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5291 TMath::Sqrt(tmp.GetSigmaY2() +
5292 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5293 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5294 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5295
5296// road in global (rphi,z) [i.e. in tracking ref. system]
5297 Double_t zmin = tmp.GetZ() - dz;
5298 Double_t zmax = tmp.GetZ() + dz;
5299 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5300 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5301
5302// select clusters in road
7167ae53 5303 layer.SelectClusters(zmin,zmax,ymin,ymax);
5304
0e91092f 5305// Define criteria for track-cluster association
7167ae53 5306 Double_t msz = tmp.GetSigmaZ2() +
5307 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5308 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5309 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5310 Double_t msy = tmp.GetSigmaY2() +
5311 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5312 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5313 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 5314 if (tmp.GetConstrain()) {
7167ae53 5315 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5316 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 5317 } else {
5318 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5319 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5320 }
7167ae53 5321 msz = 1./msz; // 1/RoadZ^2
5322 msy = 1./msy; // 1/RoadY^2
0e91092f 5323//
7167ae53 5324
5325 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5326 Int_t idetc=-1;
8a32c4b5 5327 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5328 //Double_t tolerance=0.2;
5329 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 5330 idetc = cl->GetDetectorIndex();
5331 if(idet!=idetc) continue;
5332 //Int_t ilay = cl->GetLayer();
5333
5334 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5335 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5336
5337 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 5338 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5339 }*/
5340 Float_t locx; //
5341 Float_t locz; //
0e91092f 5342 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 5343//
5344 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5345 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5346 if(key>fPlaneEff->Nblock()) return;
5347 Bool_t found=kFALSE;
8a32c4b5 5348 //if (ci>=0) {
1cc5cedc 5349 Double_t chi2;
8a32c4b5 5350 while ((cl=layer.GetNextCluster(clidx))!=0) {
5351 idetc = cl->GetDetectorIndex();
5352 if(idet!=idetc) continue;
5353 // here real control to see whether the cluster can be associated to the track.
5354 // cluster not associated to track
5355 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5356 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5357 // calculate track-clusters chi2
1cc5cedc 5358 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5359 // in particular, the error associated to the cluster
8a32c4b5 5360 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5361 // chi2 cut
5362 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 5363 found=kTRUE;
8a32c4b5 5364 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 5365 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5366 // track->SetExtraModule(ilayer,idetExtra);
5367 }
5368 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 5369 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 5370 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 5371 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5372 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5373 Int_t cltype[2]={-999,-999};
0e91092f 5374
5375 tr[0]=locx;
5376 tr[1]=locz;
5377 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5378 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5379
3ebe30ad 5380 if (found){
5381 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5382 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5383 cltype[0]=layer.GetCluster(ci)->GetNy();
5384 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 5385
5386 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5387 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5388 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5389 // It is computed properly by calling the method
5390 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5391 // T
5392 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5393 //if (tmp.PropagateTo(x,0.,0.)) {
5394 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5395 AliCluster c(*layer.GetCluster(ci));
5396 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5397 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 5398 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 5399 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5400 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 5401 //}
3ebe30ad 5402 }
5403 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 5404 }
7167ae53 5405return;
5406}
0e91092f 5407