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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>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
879cdb02 35#include <TVector3.h>
1f1e7832 36#include <TBits.h>
bf6adc12 37
4187a601 38#include "AliLog.h"
88e3c173 39#include "AliGeomManager.h"
a70ed6ad 40#include "AliITSPlaneEff.h"
a70ed6ad 41#include "AliTrackPointArray.h"
af885e0f 42#include "AliESDEvent.h"
5c6a2470 43#include "AliESDV0Params.h"
aad72f45 44#include "AliESDtrack.h"
6c94f330 45#include "AliV0.h"
a70ed6ad 46#include "AliITSChannelStatus.h"
47#include "AliITSDetTypeRec.h"
00a7cc50 48#include "AliITSRecPoint.h"
2b295109 49#include "AliITSRecPointContainer.h"
e341247d 50#include "AliITSgeomTGeo.h"
44347160 51#include "AliITSReconstructor.h"
572f41f9 52#include "AliITSClusterParam.h"
23197852 53#include "AliITSsegmentation.h"
54#include "AliITSCalibration.h"
7167ae53 55#include "AliITSPlaneEffSPD.h"
56#include "AliITSPlaneEffSDD.h"
57#include "AliITSPlaneEffSSD.h"
44396017 58#include "AliITSV0Finder.h"
ae00569a 59#include "AliITStrackerMI.h"
bb7e41dd 60#include "AliMathBase.h"
e43c066c 61
a4354152 62
e43c066c 63ClassImp(AliITStrackerMI)
e43c066c 64
e50912db 65AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 66
8221b41b 67AliITStrackerMI::AliITStrackerMI():AliTracker(),
68fI(0),
69fBestTrack(),
70fTrackToFollow(),
71fTrackHypothesys(),
72fBestHypothesys(),
73fOriginal(),
74fCurrentEsdTrack(),
75fPass(0),
76fAfterV0(kFALSE),
77fLastLayerToTrackTo(0),
afd25725 78fCoefficients(0),
8221b41b 79fEsd(0),
e50912db 80fTrackingPhase("Default"),
6518a6c5 81fUseTGeo(3),
e50912db 82fNtracks(0),
a4354152 83fFlagFakes(kFALSE),
84fSelectBestMIP03(kFALSE),
85fUseImproveKalman(kFALSE),
e50912db 86fxOverX0Pipe(-1.),
87fxTimesRhoPipe(-1.),
88fxOverX0PipeTrks(0),
89fxTimesRhoPipeTrks(0),
90fxOverX0ShieldTrks(0),
91fxTimesRhoShieldTrks(0),
92fxOverX0LayerTrks(0),
93fxTimesRhoLayerTrks(0),
4a66240a 94fDebugStreamer(0),
23197852 95fITSChannelStatus(0),
a70ed6ad 96fkDetTypeRec(0),
4336faa4 97fPlaneEff(0),
1f1e7832 98fSPDChipIntPlaneEff(0),
4336faa4 99fITSPid(0)
100
101 {
8221b41b 102 //Default constructor
e50912db 103 Int_t i;
104 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
225cff59 105 for(i=0;i<2;i++) {
106 fxOverX0Shield[i]=-1.;
107 fxTimesRhoShield[i]=-1.;
108 fConstraint[i]=0;
109 }
e50912db 110 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
a0b53cc4 111 fOriginal.SetOwner();
225cff59 112 for(i=0;i<AliITSgeomTGeo::kNLayers;i++)fForceSkippingOfLayer[i]=0;
113 for(i=0;i<100000;i++)fBestTrackIndex[i]=0;
4336faa4 114 fITSPid=new AliITSPIDResponse();
225cff59 115
8221b41b 116}
44347160 117//------------------------------------------------------------------------
1f3e997f 118AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 119fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 120fBestTrack(),
121fTrackToFollow(),
122fTrackHypothesys(),
123fBestHypothesys(),
124fOriginal(),
125fCurrentEsdTrack(),
126fPass(0),
127fAfterV0(kFALSE),
e50912db 128fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 129fCoefficients(0),
8221b41b 130fEsd(0),
e50912db 131fTrackingPhase("Default"),
6518a6c5 132fUseTGeo(3),
e50912db 133fNtracks(0),
a4354152 134fFlagFakes(kFALSE),
135fSelectBestMIP03(kFALSE),
136fUseImproveKalman(kFALSE),
e50912db 137fxOverX0Pipe(-1.),
138fxTimesRhoPipe(-1.),
139fxOverX0PipeTrks(0),
140fxTimesRhoPipeTrks(0),
141fxOverX0ShieldTrks(0),
142fxTimesRhoShieldTrks(0),
143fxOverX0LayerTrks(0),
144fxTimesRhoLayerTrks(0),
4a66240a 145fDebugStreamer(0),
23197852 146fITSChannelStatus(0),
a70ed6ad 147fkDetTypeRec(0),
4336faa4 148fPlaneEff(0),
1f1e7832 149fSPDChipIntPlaneEff(0),
4336faa4 150fITSPid(0) {
e43c066c 151 //--------------------------------------------------------------------
152 //This is the AliITStrackerMI constructor
153 //--------------------------------------------------------------------
e341247d 154 if (geom) {
155 AliWarning("\"geom\" is actually a dummy argument !");
156 }
157
a0b53cc4 158 fOriginal.SetOwner();
afd25725 159 fCoefficients = 0;
628e7bb0 160 fAfterV0 = kFALSE;
e341247d 161
e50912db 162 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 163 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
164 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
165
166 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
bf1cd124 167 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
e43c066c 168 Double_t poff=TMath::ATan2(y,x);
169 Double_t zoff=z;
bf1cd124 170
171 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e341247d 172 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 173
e341247d 174 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 175 r += TMath::Sqrt(x*x + y*y);
e341247d 176 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 177 r += TMath::Sqrt(x*x + y*y);
e341247d 178 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 179 r += TMath::Sqrt(x*x + y*y);
180 r*=0.25;
181
182 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
183
184 for (Int_t j=1; j<nlad+1; j++) {
185 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 186 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 187 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
188 m.Multiply(tm);
a5d0fae6 189 Double_t txyz[3]={0.};
190 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 191 m.LocalToMaster(txyz,xyz);
a5d0fae6 192 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 193 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 194
195 if (phi<0) phi+=TMath::TwoPi();
196 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
197
e43c066c 198 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
199 new(&det) AliITSdetector(r,phi);
1c97ce2f 200 // compute the real radius (with misalignment)
201 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
202 mmisal.Multiply(tm);
203 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
204 mmisal.LocalToMaster(txyz,xyz);
205 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
206 det.SetRmisal(rmisal);
207
23197852 208 } // end loop on detectors
209 } // end loop on ladders
9cd19c63 210 fForceSkippingOfLayer[i-1] = 0;
23197852 211 } // end loop on layers
e43c066c 212
e43c066c 213
e50912db 214 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 215
216 fPass=0;
217 fConstraint[0]=1; fConstraint[1]=0;
218
afd25725 219 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
220 AliITSReconstructor::GetRecoParam()->GetYVdef(),
221 AliITSReconstructor::GetRecoParam()->GetZVdef()};
222 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
223 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
224 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
225 SetVertex(xyzVtx,ersVtx);
e43c066c 226
e50912db 227 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 228 for (Int_t i=0;i<100000;i++){
229 fBestTrackIndex[i]=0;
230 }
afd25725 231
232 // store positions of centre of SPD modules (in z)
bf1cd124 233 // The convetion is that fSPDdetzcentre is ordered from -z to +z
afd25725 234 Double_t tr[3];
c3fd826e 235 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
bf1cd124 236 if (tr[2]<0) { // old geom (up to v5asymmPPR)
237 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
238 fSPDdetzcentre[0] = tr[2];
239 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
240 fSPDdetzcentre[1] = tr[2];
241 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
242 fSPDdetzcentre[2] = tr[2];
243 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
244 fSPDdetzcentre[3] = tr[2];
245 } else { // new geom (from v11Hybrid)
246 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
247 fSPDdetzcentre[0] = tr[2];
248 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
249 fSPDdetzcentre[1] = tr[2];
250 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
251 fSPDdetzcentre[2] = tr[2];
252 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
253 fSPDdetzcentre[3] = tr[2];
254 }
afd25725 255
afd25725 256 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 257 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
258 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
259 fUseTGeo = 3;
260 }
e50912db 261
262 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
263 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
264
c0b60eb0 265 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
266 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
81e97e0d 267
7167ae53 268 // only for plane efficiency evaluation
58e8dc31 269 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
270 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 271 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 272 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 273 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
1f1e7832 274 if (iplane<2) {
275 fPlaneEff = new AliITSPlaneEffSPD();
276 fSPDChipIntPlaneEff = new Bool_t[AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip];
277 for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
278 }
0ed58a47 279 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
280 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 281 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 282 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
283 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 284 }
a4354152 285 //
286 // RS
04315dad 287 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
a4354152 288 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
289 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
290 //
4336faa4 291 fITSPid=new AliITSPIDResponse();
628e7bb0 292}
225cff59 293/*
44347160 294//------------------------------------------------------------------------
8221b41b 295AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
296fI(tracker.fI),
297fBestTrack(tracker.fBestTrack),
298fTrackToFollow(tracker.fTrackToFollow),
299fTrackHypothesys(tracker.fTrackHypothesys),
300fBestHypothesys(tracker.fBestHypothesys),
301fOriginal(tracker.fOriginal),
302fCurrentEsdTrack(tracker.fCurrentEsdTrack),
303fPass(tracker.fPass),
304fAfterV0(tracker.fAfterV0),
305fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 306fCoefficients(tracker.fCoefficients),
8221b41b 307fEsd(tracker.fEsd),
e50912db 308fTrackingPhase(tracker.fTrackingPhase),
afd25725 309fUseTGeo(tracker.fUseTGeo),
e50912db 310fNtracks(tracker.fNtracks),
a4354152 311fFlagFakes(tracker.fFlagFakes),
312fSelectBestMIP03(tracker.fSelectBestMIP03),
e50912db 313fxOverX0Pipe(tracker.fxOverX0Pipe),
314fxTimesRhoPipe(tracker.fxTimesRhoPipe),
315fxOverX0PipeTrks(0),
316fxTimesRhoPipeTrks(0),
317fxOverX0ShieldTrks(0),
318fxTimesRhoShieldTrks(0),
319fxOverX0LayerTrks(0),
320fxTimesRhoLayerTrks(0),
4a66240a 321fDebugStreamer(tracker.fDebugStreamer),
23197852 322fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 323fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 324fPlaneEff(tracker.fPlaneEff) {
8221b41b 325 //Copy constructor
a0b53cc4 326 fOriginal.SetOwner();
e50912db 327 Int_t i;
328 for(i=0;i<4;i++) {
329 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
330 }
331 for(i=0;i<6;i++) {
332 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
333 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
334 }
335 for(i=0;i<2;i++) {
336 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
337 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
338 }
8221b41b 339}
225cff59 340
44347160 341//------------------------------------------------------------------------
8221b41b 342AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
343 //Assignment operator
344 this->~AliITStrackerMI();
345 new(this) AliITStrackerMI(tracker);
346 return *this;
347}
225cff59 348*/
44347160 349//------------------------------------------------------------------------
628e7bb0 350AliITStrackerMI::~AliITStrackerMI()
351{
352 //
353 //destructor
354 //
e50912db 355 if (fCoefficients) delete [] fCoefficients;
356 DeleteTrksMaterialLUT();
81e97e0d 357 if (fDebugStreamer) {
358 //fDebugStreamer->Close();
359 delete fDebugStreamer;
360 }
23197852 361 if(fITSChannelStatus) delete fITSChannelStatus;
362 if(fPlaneEff) delete fPlaneEff;
4336faa4 363 if(fITSPid) delete fITSPid;
1f1e7832 364 if (fSPDChipIntPlaneEff) delete [] fSPDChipIntPlaneEff;
4336faa4 365
e43c066c 366}
44347160 367//------------------------------------------------------------------------
23197852 368void AliITStrackerMI::ReadBadFromDetTypeRec() {
369 //--------------------------------------------------------------------
370 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
371 //i.e. from OCDB
372 //--------------------------------------------------------------------
373
374 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
375
4187a601 376 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 377
a70ed6ad 378 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 379
380 // ITS channels map
381 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 382 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 383
384 // ITS detectors and chips
385 Int_t i=0,j=0,k=0,ndet=0;
386 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 387 Int_t nBadDetsPerLayer=0;
23197852 388 ndet=AliITSgeomTGeo::GetNDetectors(i);
389 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
390 for (k=1; k<ndet+1; k++) {
391 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 392 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 393 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 394 } // end loop on detectors
395 } // end loop on ladders
e9b15b0c 396 AliInfo(Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 397 } // end loop on layers
398
399 return;
400}
401//------------------------------------------------------------------------
e43c066c 402Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
403 //--------------------------------------------------------------------
404 //This function loads ITS clusters
405 //--------------------------------------------------------------------
2b295109 406
407 TClonesArray *clusters = NULL;
408 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
409 clusters=rpcont->FetchClusters(0,cTree);
9cd19c63 410 if(!clusters) return 1;
411
2b295109 412 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
413 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
414 return 1;
e43c066c 415 }
23197852 416 Int_t i=0,j=0,ndet=0;
e43c066c 417 Int_t detector=0;
23197852 418 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
419 ndet=fgLayers[i].GetNdetectors();
e43c066c 420 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
421 for (; j<jmax; j++) {
2b295109 422 // if (!cTree->GetEvent(j)) continue;
423 clusters = rpcont->UncheckedGetClusters(j);
424 if(!clusters)continue;
e43c066c 425 Int_t ncl=clusters->GetEntriesFast();
426 SignDeltas(clusters,GetZ());
1f3e997f 427
e43c066c 428 while (ncl--) {
00a7cc50 429 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 430 detector=c->GetDetectorIndex();
a504d56f 431
75fb37cc 432 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 433
434 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
435 if(retval) {
436 AliWarning(Form("Too many clusters on layer %d!",i));
437 break;
438 }
e43c066c 439 }
6262dd3d 440
afd25725 441 // add dead zone "virtual" cluster in SPD, if there is a cluster within
442 // zwindow cm from the dead zone
bf1cd124 443 // This method assumes that fSPDdetzcentre is ordered from -z to +z
afd25725 444 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 445 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 446 Int_t lab[4] = {0,0,0,detector};
447 Int_t info[3] = {0,0,i};
6518a6c5 448 Float_t q = 0.; // this identifies virtual clusters
9cd19c63 449 Float_t hit[6] = {xdead,
afd25725 450 0.,
451 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
452 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
9cd19c63 453 q,
454 0.};
afd25725 455 Bool_t local = kTRUE;
456 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 457 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 458 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
459 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 460 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 461 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
462 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 463 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 464 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
465 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 466 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 467 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
468 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 469 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 470 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
471 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 472 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 473 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
474 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 475 }
6518a6c5 476 } // "virtual" clusters in SPD
e43c066c 477
478 }
479 //
480 fgLayers[i].ResetRoad(); //road defined by the cluster density
481 fgLayers[i].SortClusters();
482 }
483
4fa7f7d1 484 // check whether we have to skip some layers
485 SetForceSkippingOfLayer();
486
e43c066c 487 return 0;
488}
44347160 489//------------------------------------------------------------------------
e43c066c 490void AliITStrackerMI::UnloadClusters() {
491 //--------------------------------------------------------------------
492 //This function unloads ITS clusters
493 //--------------------------------------------------------------------
e50912db 494 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 495}
44347160 496//------------------------------------------------------------------------
23197852 497void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
498 //--------------------------------------------------------------------
499 // Publishes all pointers to clusters known to the tracker into the
500 // passed object array.
501 // The ownership is not transfered - the caller is not expected to delete
502 // the clusters.
503 //--------------------------------------------------------------------
504
505 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
506 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
507 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
508 array->AddLast(cl);
509 }
510 }
511
512 return;
513}
514//------------------------------------------------------------------------
44396017 515Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 516 //--------------------------------------------------------------------
517 // Correction for the material between the TPC and the ITS
e43c066c 518 //--------------------------------------------------------------------
e50912db 519 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
520 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
521 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
522 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
523 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
524 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
525 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
526 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 527 } else {
44396017 528 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 529 return 0;
e43c066c 530 }
531
e50912db 532 return 1;
e43c066c 533}
44347160 534//------------------------------------------------------------------------
af885e0f 535Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 536 //--------------------------------------------------------------------
537 // This functions reconstructs ITS tracks
538 // The clusters must be already loaded !
539 //--------------------------------------------------------------------
fddf8459 540
4fa7f7d1 541 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 542
e50912db 543 fTrackingPhase="Clusters2Tracks";
dc422a31 544 //
ddfbc51a 545 // RS
04315dad 546 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
dc422a31 547 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
548 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
549 //
e43c066c 550 TObjArray itsTracks(15000);
628e7bb0 551 fOriginal.Clear();
81e97e0d 552 fEsd = event; // store pointer to the esd
afd25725 553
9a5326b1 554 // temporary (for cosmics)
555 if(event->GetVertex()) {
556 TString title = event->GetVertex()->GetTitle();
557 if(title.Contains("cosmics")) {
558 Double_t xyz[3]={GetX(),GetY(),GetZ()};
559 Double_t exyz[3]={0.1,0.1,0.1};
560 SetVertex(xyz,exyz);
561 }
562 }
563 // temporary
75a74b11 564 Int_t noesd = 0;
e43c066c 565 {/* Read ESD tracks */
afd25725 566 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 567 Int_t nentr=event->GetNumberOfTracks();
75a74b11 568 noesd=nentr;
569 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 570 while (nentr--) {
571 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 572 // ---- for debugging:
573 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
e43c066c 574
575 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
576 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
577 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 578 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
763bdf3e 579 AliITStrackMI *t = new AliITStrackMI(*esd);
b9671574 580 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
581 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 582
583
afd25725 584 // look at the ESD mass hypothesys !
585 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 586 // write expected q
b9671574 587 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 588
afd25725 589 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 590 //track - can be V0 according to TPC
afd25725 591 } else {
592 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 593 delete t;
594 continue;
e50912db 595 }
afd25725 596 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 597 delete t;
598 continue;
599 }
6c23ffed 600 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 601 delete t;
602 continue;
603 }
e50912db 604 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 605 delete t;
606 continue;
607 }
e43c066c 608 }
b9671574 609 t->SetReconstructed(kFALSE);
e43c066c 610 itsTracks.AddLast(t);
628e7bb0 611 fOriginal.AddLast(t);
e43c066c 612 }
613 } /* End Read ESD tracks */
614
615 itsTracks.Sort();
628e7bb0 616 fOriginal.Sort();
e43c066c 617 Int_t nentr=itsTracks.GetEntriesFast();
618 fTrackHypothesys.Expand(nentr);
81e97e0d 619 fBestHypothesys.Expand(nentr);
afd25725 620 MakeCoefficients(nentr);
513ab112 621 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 622 Int_t ntrk=0;
afd25725 623 // THE TWO TRACKING PASSES
e43c066c 624 for (fPass=0; fPass<2; fPass++) {
625 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 626 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 627 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 628 if (t==0) continue; //this track has been already tracked
1c97ce2f 629 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 630 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 631 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 632 if (fConstraint[fPass]) {
633 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
634 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
635 }
e43c066c 636
637 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 638 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 639 fI = 6;
640 ResetTrackToFollow(*t);
641 ResetBestTrack();
6518a6c5 642
e50912db 643 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 644
e43c066c 645
646 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
647 //
ae00569a 648 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 649 if (!besttrack) continue;
650 besttrack->SetLabel(tpcLabel);
651 // besttrack->CookdEdx();
652 CookdEdx(besttrack);
b9671574 653 besttrack->SetFakeRatio(1.);
e43c066c 654 CookLabel(besttrack,0.); //For comparison only
e43c066c 655 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 656 t->SetWinner(besttrack);
628e7bb0 657
628e7bb0 658 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
659
b9671574 660 t->SetReconstructed(kTRUE);
1c97ce2f 661 ntrk++;
4187a601 662 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 663 }
664 GetBestHypothesysMIP(itsTracks);
afd25725 665 } // end loop on the two tracking passes
a4354152 666 //
667 if (fFlagFakes) FlagFakes(itsTracks);
668 //
cd90f0a2 669 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
670 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 671 fAfterV0 = kTRUE;
628e7bb0 672 //
a0b53cc4 673 itsTracks.Clear();
e43c066c 674 //
675 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 676 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 677 TObjArray * array =(TObjArray*)fTrackHypothesys.At(ientry);
e43c066c 678 if (array) array->Delete();
679 delete fTrackHypothesys.RemoveAt(ientry);
680 }
681
682 fTrackHypothesys.Delete();
4ffece29 683 entries = fBestHypothesys.GetEntriesFast();
684 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 685 TObjArray * array =(TObjArray*)fBestHypothesys.At(ientry);
4ffece29 686 if (array) array->Delete();
687 delete fBestHypothesys.RemoveAt(ientry);
688 }
81e97e0d 689 fBestHypothesys.Delete();
628e7bb0 690 fOriginal.Clear();
afd25725 691 delete [] fCoefficients;
692 fCoefficients=0;
e50912db 693 DeleteTrksMaterialLUT();
694
75a74b11 695 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 696
697 fTrackingPhase="Default";
628e7bb0 698
e43c066c 699 return 0;
700}
44347160 701//------------------------------------------------------------------------
af885e0f 702Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 703 //--------------------------------------------------------------------
704 // This functions propagates reconstructed ITS tracks back
705 // The clusters must be loaded !
706 //--------------------------------------------------------------------
e50912db 707 fTrackingPhase="PropagateBack";
e43c066c 708 Int_t nentr=event->GetNumberOfTracks();
75a74b11 709 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
6bc9851f 710 double bz0 = GetBz();
711 const double kWatchStep=10.; // for larger steps watch arc vs segment difference
712 //
e43c066c 713 Int_t ntrk=0;
714 for (Int_t i=0; i<nentr; i++) {
715 AliESDtrack *esd=event->GetTrack(i);
716
a512bf97 717 // Start time integral and add distance from current position to vertex
e43c066c 718 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
48b634ff 719 AliITStrackMI t(*esd);
67178f34 720 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
48b634ff 721 t.GetXYZ(xyzTrk);
67178f34 722 Double_t dst2 = 0.;
6bc9851f 723 {
724 double dxs = xyzTrk[0] - xyzVtx[0];
725 double dys = xyzTrk[1] - xyzVtx[1];
726 double dzs = xyzTrk[2] - xyzVtx[2];
727 // RS: for large segment steps d use approximation of cicrular arc s by
728 // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2)
729 // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature)
730 // Hence s^2/d^2 = (1+1/6 p^2)^2
731 dst2 = dxs*dxs + dys*dys;
732 if (dst2 > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor
733 double crv = TMath::Abs(esd->GetC(bz0));
734 double fcarc = 1.+crv*crv*dst2/6.;
735 dst2 *= fcarc*fcarc;
736 }
737 dst2 += dzs*dzs;
738 }
48b634ff 739 t.StartTimeIntegral();
740 t.AddTimeStep(TMath::Sqrt(dst2));
a512bf97 741 //
742 // transfer the time integral to ESD track
743 esd->SetStatus(AliESDtrack::kTIME);
48b634ff 744 Double_t times[10];t.GetIntegratedTimes(times); esd->SetIntegratedTimes(times);
745 esd->SetIntegratedLength(t.GetIntegratedLength());
a512bf97 746 //
48b634ff 747 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
e43c066c 748
48b634ff 749 t.SetExpQ(TMath::Max(0.8*t.GetESDtrack()->GetTPCsignal(),30.));
750 ResetTrackToFollow(t);
a512bf97 751 //
6c94f330 752 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
48b634ff 753 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,&t)) {
754 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) continue;
755 fTrackToFollow.SetLabel(t.GetLabel());
a512bf97 756 //fTrackToFollow.CookdEdx();
757 CookLabel(&fTrackToFollow,0.); //For comparison only
758 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
759 //UseClusters(&fTrackToFollow);
760 ntrk++;
e43c066c 761 }
e43c066c 762 }
763
75a74b11 764 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 765
e50912db 766 fTrackingPhase="Default";
767
e43c066c 768 return 0;
769}
44347160 770//------------------------------------------------------------------------
af885e0f 771Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 772 //--------------------------------------------------------------------
773 // This functions refits ITS tracks using the
774 // "inward propagated" TPC tracks
775 // The clusters must be loaded !
776 //--------------------------------------------------------------------
e50912db 777 fTrackingPhase="RefitInward";
44396017 778
cd90f0a2 779 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 780
794d9013 781 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
782 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
783
e43c066c 784 Int_t nentr=event->GetNumberOfTracks();
75a74b11 785 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 786
1f1e7832 787 // only for PlaneEff and in case of SPD (for FO studies)
788 if( AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
789 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0 &&
790 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()<2) {
791 for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
792 }
793
e43c066c 794 Int_t ntrk=0;
795 for (Int_t i=0; i<nentr; i++) {
796 AliESDtrack *esd=event->GetTrack(i);
797
798 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
799 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
800 if (esd->GetStatus()&AliESDtrack::kTPCout)
801 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
802
763bdf3e 803 AliITStrackMI *t = new AliITStrackMI(*esd);
804
b9671574 805 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 806 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 807 delete t;
808 continue;
809 }
810
811 ResetTrackToFollow(*t);
812 fTrackToFollow.ResetClusters();
813
ef3508c5 814 // ITS standalone tracks
815 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
6c94f330 816 fTrackToFollow.ResetCovariance(10.);
ef3508c5 817 // protection for loopers that can have parameters screwed up
818 if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
819 TMath::Abs(fTrackToFollow.GetZ())>1000.) {
820 delete t;
821 continue;
822 }
823 }
e43c066c 824
825 //Refitting...
58e8dc31 826 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
827 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 828
4187a601 829 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
794d9013 830 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
4187a601 831 AliDebug(2," refit OK");
e43c066c 832 fTrackToFollow.SetLabel(t->GetLabel());
833 // fTrackToFollow.CookdEdx();
834 CookdEdx(&fTrackToFollow);
835
836 CookLabel(&fTrackToFollow,0.0); //For comparison only
837
9a5326b1 838 //The beam pipe
e50912db 839 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 840 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 841 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 842 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
843 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 844 Double_t r[3]={0.,0.,0.};
9a5326b1 845 Double_t maxD=3.;
846 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
847 ntrk++;
e43c066c 848 }
849 }
850 delete t;
851 }
852
75a74b11 853 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 854
e50912db 855 fTrackingPhase="Default";
856
e43c066c 857 return 0;
858}
44347160 859//------------------------------------------------------------------------
e43c066c 860AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
861 //--------------------------------------------------------------------
862 // Return pointer to a given cluster
863 //--------------------------------------------------------------------
864 Int_t l=(index & 0xf0000000) >> 28;
865 Int_t c=(index & 0x0fffffff) >> 00;
866 return fgLayers[l].GetCluster(c);
867}
9a5326b1 868//------------------------------------------------------------------------
df29e9a4 869Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 870 //--------------------------------------------------------------------
df29e9a4 871 // Get track space point with index i
9a5326b1 872 //--------------------------------------------------------------------
60066577 873
78b03929 874 Int_t l=(index & 0xf0000000) >> 28;
875 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 876 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 877 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 878
60066577 879 Float_t xyz[3];
880 Float_t cov[6];
881 cl->GetGlobalXYZ(xyz);
882 cl->GetGlobalCov(cov);
883 p.SetXYZ(xyz, cov);
be77c8c9 884 p.SetCharge(cl->GetQ());
ebbcf1ea 885 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 886 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 887 p.SetClusterType(cl->GetClusterType());
ae079791 888 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 889 switch (l) {
890 case 0:
ae079791 891 iLayer = AliGeomManager::kSPD1;
df29e9a4 892 break;
893 case 1:
ae079791 894 iLayer = AliGeomManager::kSPD2;
df29e9a4 895 break;
896 case 2:
ae079791 897 iLayer = AliGeomManager::kSDD1;
df29e9a4 898 break;
899 case 3:
ae079791 900 iLayer = AliGeomManager::kSDD2;
9a5326b1 901 break;
902 case 4:
903 iLayer = AliGeomManager::kSSD1;
904 break;
905 case 5:
906 iLayer = AliGeomManager::kSSD2;
907 break;
908 default:
909 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
910 break;
911 };
912 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
913 p.SetVolumeID((UShort_t)volid);
914 return kTRUE;
915}
916//------------------------------------------------------------------------
917Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
918 AliTrackPoint& p, const AliESDtrack *t) {
919 //--------------------------------------------------------------------
920 // Get track space point with index i
921 // (assign error estimated during the tracking)
922 //--------------------------------------------------------------------
923
924 Int_t l=(index & 0xf0000000) >> 28;
925 Int_t c=(index & 0x0fffffff) >> 00;
926 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
927 Int_t idet = cl->GetDetectorIndex();
4187a601 928
9a5326b1 929 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
930
931 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
932 Float_t detxy[2];
933 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
934 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
935 Double_t alpha = t->GetAlpha();
936 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
242bd643 937 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
9a5326b1 938 phi += alpha-det.GetPhi();
939 Float_t tgphi = TMath::Tan(phi);
940
941 Float_t tgl = t->GetTgl(); // tgl about const along track
942 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
943
d9ead1a0 944 Float_t errtrky,errtrkz,covyz;
8c139cf3 945 Bool_t addMisalErr=kFALSE;
d9ead1a0 946 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 947
948 Float_t xyz[3];
949 Float_t cov[6];
950 cl->GetGlobalXYZ(xyz);
951 // cl->GetGlobalCov(cov);
952 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 953 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 954 tmpcl.GetGlobalCov(cov);
955
956 p.SetXYZ(xyz, cov);
be77c8c9 957 p.SetCharge(cl->GetQ());
ebbcf1ea 958 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 959 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 960 p.SetClusterType(cl->GetClusterType());
9a5326b1 961
962 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
963 switch (l) {
964 case 0:
965 iLayer = AliGeomManager::kSPD1;
966 break;
967 case 1:
968 iLayer = AliGeomManager::kSPD2;
969 break;
970 case 2:
971 iLayer = AliGeomManager::kSDD1;
972 break;
973 case 3:
974 iLayer = AliGeomManager::kSDD2;
df29e9a4 975 break;
976 case 4:
ae079791 977 iLayer = AliGeomManager::kSSD1;
df29e9a4 978 break;
979 case 5:
ae079791 980 iLayer = AliGeomManager::kSSD2;
df29e9a4 981 break;
982 default:
983 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
984 break;
985 };
ae079791 986 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 987
df29e9a4 988 p.SetVolumeID((UShort_t)volid);
989 return kTRUE;
990}
44347160 991//------------------------------------------------------------------------
81e97e0d 992void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 993{
994 //--------------------------------------------------------------------
995 // Follow prolongation tree
996 //--------------------------------------------------------------------
81e97e0d 997 //
afd25725 998 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
999 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
1000
2755f080 1001
b9671574 1002 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 1003 if (esd->GetV0Index(0)>0) {
81e97e0d 1004 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 1005 // mapping of ESD track is different as ITS track in Containers
81e97e0d 1006 // Need something more stable
44347160 1007 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 1008 for (Int_t i=0;i<3;i++){
1009 Int_t index = esd->GetV0Index(i);
1010 if (index==0) break;
d6a49f20 1011 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 1012 if (vertex->GetStatus()<0) continue; // rejected V0
1013 //
afd25725 1014 if (esd->GetSign()>0) {
1015 vertex->SetIndex(0,esdindex);
1016 } else {
1017 vertex->SetIndex(1,esdindex);
1018 }
81e97e0d 1019 }
1020 }
1021 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
1022 if (!bestarray){
1023 bestarray = new TObjArray(5);
4ffece29 1024 bestarray->SetOwner();
81e97e0d 1025 fBestHypothesys.AddAt(bestarray,esdindex);
1026 }
e43c066c 1027
81e97e0d 1028 //
e43c066c 1029 //setup tree of the prolongations
1030 //
a4354152 1031 const int kMaxTr = 100; //RS
1032 static AliITStrackMI tracks[7][kMaxTr];
15dd636f 1033 AliITStrackMI *currenttrack;
1034 static AliITStrackMI currenttrack1;
1035 static AliITStrackMI currenttrack2;
1036 static AliITStrackMI backuptrack;
e43c066c 1037 Int_t ntracks[7];
a4354152 1038 Int_t nindexes[7][kMaxTr];
1039 Float_t normalizedchi2[kMaxTr];
e43c066c 1040 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 1041 otrack->SetNSkipped(0);
15dd636f 1042 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 1043 ntracks[6]=1;
81e97e0d 1044 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 1045 Int_t modstatus = 1; // found
1046 Float_t xloc,zloc;
e43c066c 1047 //
1048 //
1049 // follow prolongations
e50912db 1050 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 1051 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 1052 fI = ilayer;
e43c066c 1053 //
2755f080 1054 AliITSlayer &layer=fgLayers[ilayer];
1055 Double_t r = layer.GetR();
e43c066c 1056 ntracks[ilayer]=0;
1057 //
1058 //
2755f080 1059 Int_t nskipped=0;
e43c066c 1060 Float_t nused =0;
e50912db 1061 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
a4354152 1062 // printf("LR %d Tr:%d NSeeds: %d\n",ilayer,itrack,ntracks[ilayer+1]);
e43c066c 1063 //set current track
a4354152 1064 if (ntracks[ilayer]>=kMaxTr) break;
b9671574 1065 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1066 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 1067 if (ntracks[ilayer]>15+ilayer){
b9671574 1068 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1069 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 1070 }
1071
15dd636f 1072 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1073
afd25725 1074 // material between SSD and SDD, SDD and SPD
e50912db 1075 if (ilayer==3)
1076 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1077 if (ilayer==1)
1078 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1079
2755f080 1080 // detector number
8602c008 1081 Double_t phi,z;
1082 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1083 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1084
1085 Double_t trackGlobXYZ1[3];
d1181f10 1086 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1087
2755f080 1088 // Get the budget to the primary vertex for the current track being prolonged
a4354152 1089 Double_t budgetToPrimVertex = 0;
1090 double xMSLrs[9],x2X0MSLrs[9]; // needed for ImproveKalman
1091 int nMSLrs = 0;
1092 //
1093 if (fUseImproveKalman) nMSLrs = GetEffectiveThicknessLbyL(xMSLrs,x2X0MSLrs);
1094 else budgetToPrimVertex = GetEffectiveThickness();
1095 //
2755f080 1096 // check if we allow a prolongation without point
6518a6c5 1097 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1098 if (skip) {
1099 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1100 // propagate to the layer radius
d1181f10 1101 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1102 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1103 // apply correction for material of the current layer
1104 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1105 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1106 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1107 vtrack->SetClIndex(ilayer,-1);
ae00569a 1108 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1109 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1110 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1111 }
a4354152 1112 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1113 fUseImproveKalman ?
1114 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1115 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1116 }
2755f080 1117 ntracks[ilayer]++;
6518a6c5 1118 continue;
2755f080 1119 }
1120
1121 // track outside layer acceptance in z
1122 if (idet<0) continue;
1123
1124 //propagate to the intersection with the detector plane
1125 const AliITSdetector &det=layer.GetDetector(idet);
1126 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1127 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1128 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1129 currenttrack1.SetDetectorIndex(idet);
1130 currenttrack2.SetDetectorIndex(idet);
d1181f10 1131 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1132
afd25725 1133 //***************
1c97ce2f 1134 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1135 //
2755f080 1136 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1137 Double_t zmin,zmax,ymin,ymax;
1138 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1139
afd25725 1140 // select clusters in road
e43c066c 1141 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1142 //********************
44347160 1143
afd25725 1144 // Define criteria for track-cluster association
44347160 1145 Double_t msz = currenttrack1.GetSigmaZ2() +
1146 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1147 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1148 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1149 Double_t msy = currenttrack1.GetSigmaY2() +
1150 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1151 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1152 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1153 if (constrain) {
1154 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1155 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1156 } else {
1157 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1158 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1159 }
1160 msz = 1./msz; // 1/RoadZ^2
1161 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1162
e43c066c 1163 //
e43c066c 1164 //
afd25725 1165 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1166 //
afd25725 1167 const AliITSRecPoint *cl=0;
1168 Int_t clidx=-1;
1169 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1170 Bool_t deadzoneSPD=kFALSE;
e43c066c 1171 currenttrack = &currenttrack1;
6518a6c5 1172
ae00569a 1173 // check if the road contains a dead zone
23197852 1174 Bool_t noClusters = kFALSE;
1175 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1176 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1177 Double_t dz=0.5*(zmax-zmin);
1178 Double_t dy=0.5*(ymax-ymin);
1179 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1180 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1181 // create a prolongation without clusters (check also if there are no clusters in the road)
1182 if (dead ||
23197852 1183 (noClusters &&
ae00569a 1184 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1185 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1186 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1187 if (dead==0) {
1188 modstatus = 5; // no cls in road
1189 } else if (dead==1) {
1190 modstatus = 7; // holes in z in SPD
f8720bda 1191 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1192 modstatus = 2; // dead from OCDB
1193 }
1194 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1195 // apply correction for material of the current layer
1196 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1197 if (constrain) { // apply vertex constrain
1198 updatetrack->SetConstrain(constrain);
1199 Bool_t isPrim = kTRUE;
1200 if (ilayer<4) { // check that it's close to the vertex
1201 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1202 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1203 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1204 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1205 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1206 }
a4354152 1207 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1208 fUseImproveKalman ?
1209 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1210 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1211 }
6518a6c5 1212 }
f8720bda 1213 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1214 if (dead) {
ae00569a 1215 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1216 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1217 deadzoneSPD=kTRUE;
f8720bda 1218 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1219 updatetrack->SetDeadZoneProbability(ilayer,1.);
1220 } else if (dead==4) { // at least a single dead channel from OCDB
1221 updatetrack->SetDeadZoneProbability(ilayer,0.);
1222 }
6518a6c5 1223 }
1224 ntracks[ilayer]++;
1225 }
1226
ae00569a 1227 clidx=-1;
6518a6c5 1228 // loop over clusters in the road
afd25725 1229 while ((cl=layer.GetNextCluster(clidx))!=0) {
a4354152 1230 if (ntracks[ilayer]>int(0.95*kMaxTr)) break; //space for skipped clusters
afd25725 1231 Bool_t changedet =kFALSE;
88e3c173 1232 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1233 Int_t idetc=cl->GetDetectorIndex();
afd25725 1234
a5d0fae6 1235 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1236 // take into account misalignment (bring track to real detector plane)
1237 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1238 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1239 // a first cut on track-cluster distance
1240 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1241 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1242 { // cluster not associated to track
4187a601 1243 AliDebug(2,"not associated");
421c4ba7 1244 // MvL: added here as well
1245 // bring track back to ideal detector plane
1246 currenttrack->Propagate(xTrOrig);
1c97ce2f 1247 continue;
1248 }
1249 // bring track back to ideal detector plane
9be1d1c7 1250 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1251 } else { // have to move track to cluster's detector
a5d0fae6 1252 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1253 // a first cut on track-cluster distance
a5d0fae6 1254 Double_t y;
1c97ce2f 1255 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1256 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1257 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1258 continue; // cluster not associated to track
e43c066c 1259 //
15dd636f 1260 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1261 changedet = kTRUE;
e43c066c 1262 currenttrack =&currenttrack2;
a5d0fae6 1263 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1264 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1265 changedet = kFALSE;
e43c066c 1266 continue;
1267 }
a5d0fae6 1268 currenttrack->SetDetectorIndex(idetc);
e50912db 1269 // Get again the budget to the primary vertex
1270 // for the current track being prolonged, if had to change detector
1271 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1272 }
1273
afd25725 1274 // calculate track-clusters chi2
1275 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1276 // chi2 cut
4187a601 1277 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1278 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1279 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
a4354152 1280 if (ntracks[ilayer]>=kMaxTr) continue;
15dd636f 1281 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1282 updatetrack->SetClIndex(ilayer,-1);
afd25725 1283 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1284
88e3c173 1285 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1286 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1287 AliDebug(2,"update failed");
1c97ce2f 1288 continue;
1289 }
09cf9d66 1290 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1291 modstatus = 1; // found
6518a6c5 1292 } else { // virtual cluster in dead zone
b9671574 1293 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1294 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1295 modstatus = 7; // holes in z in SPD
1296 }
1297
1298 if (changedet) {
1299 Float_t xlocnewdet,zlocnewdet;
d1181f10 1300 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1301 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1302 }
ae00569a 1303 } else {
1304 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1305 }
afd25725 1306 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1307
1308 // apply correction for material of the current layer
e50912db 1309 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1310
afd25725 1311 if (constrain) { // apply vertex constrain
b9671574 1312 updatetrack->SetConstrain(constrain);
e43c066c 1313 Bool_t isPrim = kTRUE;
afd25725 1314 if (ilayer<4) { // check that it's close to the vertex
b9671574 1315 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1316 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1317 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1318 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1319 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1320 }
a4354152 1321 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1322 fUseImproveKalman ?
1323 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1324 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1325 }
e43c066c 1326 } //apply vertex constrain
1327 ntracks[ilayer]++;
afd25725 1328 } // create new hypothesis
4187a601 1329 else {
1330 AliDebug(2,"chi2 too large");
1331 }
1332
2755f080 1333 } // loop over possible prolongations
1334
1335 // allow one prolongation without clusters
a4354152 1336 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<kMaxTr) {
15dd636f 1337 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1338 // apply correction for material of the current layer
1339 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1340 vtrack->SetClIndex(ilayer,-1);
ae00569a 1341 modstatus = 3; // skipped
1342 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
a4354152 1343 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1344 fUseImproveKalman ?
1345 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1346 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1347 }
b9671574 1348 vtrack->IncrementNSkipped();
e43c066c 1349 ntracks[ilayer]++;
1350 }
1351
6262dd3d 1352
e50912db 1353 } // loop over tracks in layer ilayer+1
afd25725 1354
1355 //loop over track candidates for the current layer
e43c066c 1356 //
1357 //
1358 Int_t accepted=0;
1359
afd25725 1360 Int_t golden=0;
e43c066c 1361 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1362 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1363 if (normalizedchi2[itrack] <
1364 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1365 if (ilayer>4) {
1366 accepted++;
1367 } else {
1368 if (constrain) { // constrain
afd25725 1369 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1370 accepted++;
44347160 1371 } else { // !constrain
afd25725 1372 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1373 accepted++;
44347160 1374 }
e43c066c 1375 }
1376 }
afd25725 1377 // sort tracks by increasing normalized chi2
1378 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1379 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1380 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
a4354152 1381 // if (ntracks[ilayer]>90) ntracks[ilayer]=90;
04315dad 1382 if (ntracks[ilayer]>int(kMaxTr*0.9)) ntracks[ilayer]=int(kMaxTr*0.9);
afd25725 1383 } // end loop over layers
1384
afd25725 1385
1386 //
1387 // Now select tracks to be kept
1388 //
44347160 1389 Int_t max = constrain ? 20 : 5;
e43c066c 1390
afd25725 1391 // tracks that reach layer 0 (SPD inner)
44347160 1392 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1393 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1394 if (track.GetNumberOfClusters()<2) continue;
afd25725 1395 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1396 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1397 continue;
1398 }
15dd636f 1399 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1400 }
afd25725 1401
1402 // tracks that reach layer 1 (SPD outer)
628e7bb0 1403 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1404 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1405 if (track.GetNumberOfClusters()<4) continue;
afd25725 1406 if (!constrain && track.GetNormChi2(1) >
1407 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1408 if (constrain) track.IncrementNSkipped();
81e97e0d 1409 if (!constrain) {
b9671574 1410 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1411 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1412 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1413 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1414 }
1415 }
15dd636f 1416 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1417 }
afd25725 1418
6518a6c5 1419 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1420 if (!constrain){
628e7bb0 1421 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1422 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1423 if (track.GetNumberOfClusters()<3) continue;
9cd19c63 1424 if (track.GetNormChi2(2) >
afd25725 1425 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
9cd19c63 1426 track.SetD(0,track.GetD(GetX(),GetY()));
1427 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1428 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1429 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1430 }
15dd636f 1431 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1432 }
1433 }
81e97e0d 1434
afd25725 1435 if (!constrain) {
81e97e0d 1436 //
afd25725 1437 // register best track of each layer - important for V0 finder
81e97e0d 1438 //
1439 for (Int_t ilayer=0;ilayer<5;ilayer++){
1440 if (ntracks[ilayer]==0) continue;
1441 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1442 if (track.GetNumberOfClusters()<1) continue;
1443 CookLabel(&track,0);
1444 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1445 }
1446 }
1447 //
1448 // update TPC V0 information
1449 //
b9671574 1450 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1451 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1452 for (Int_t i=0;i<3;i++){
b9671574 1453 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1454 if (index==0) break;
44347160 1455 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1456 if (vertex->GetStatus()<0) continue; // rejected V0
1457 //
6c94f330 1458 if (otrack->GetSign()>0) {
81e97e0d 1459 vertex->SetIndex(0,esdindex);
1460 }
1461 else{
1462 vertex->SetIndex(1,esdindex);
1463 }
1464 //find nearest layer with track info
b75d63a7 1465 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1466 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1467 Int_t nearest = nearestold;
9cd19c63 1468 for (Int_t ilayer =nearest;ilayer<7;ilayer++){
81e97e0d 1469 if (ntracks[nearest]==0){
1470 nearest = ilayer;
1471 }
1472 }
1473 //
1474 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1475 if (nearestold<5&&nearest<5){
b9671574 1476 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1477 if (accept){
6c94f330 1478 if (track.GetSign()>0) {
b75d63a7 1479 vertex->SetParamP(track);
81e97e0d 1480 vertex->Update(fprimvertex);
44347160 1481 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1482 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1483 }else{
b75d63a7 1484 vertex->SetParamN(track);
81e97e0d 1485 vertex->Update(fprimvertex);
1486 //vertex->SetIndex(1,track.fESDtrack->GetID());
1487 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1488 }
1489 vertex->SetStatus(vertex->GetStatus()+1);
1490 }else{
44347160 1491 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1492 }
1493 }
81e97e0d 1494 }
afd25725 1495 }
1496
e43c066c 1497}
44347160 1498//------------------------------------------------------------------------
e43c066c 1499AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1500{
1501 //--------------------------------------------------------------------
1502 //
1503 //
1504 return fgLayers[layer];
1505}
44347160 1506//------------------------------------------------------------------------
8221b41b 1507AliITStrackerMI::AliITSlayer::AliITSlayer():
1508fR(0),
1509fPhiOffset(0),
1510fNladders(0),
1511fZOffset(0),
1512fNdetectors(0),
1513fDetectors(0),
1514fN(0),
1515fDy5(0),
1516fDy10(0),
1517fDy20(0),
1518fClustersCs(0),
1519fClusterIndexCs(0),
1520fYcs(0),
1521fZcs(0),
1522fNcs(0),
1523fCurrentSlice(-1),
d9ead1a0 1524fZmin(0),
8221b41b 1525fZmax(0),
1526fYmin(0),
1527fYmax(0),
1528fI(0),
1529fImax(0),
1530fSkip(0),
1531fAccepted(0),
d9ead1a0 1532fRoad(0),
1533fMaxSigmaClY(0),
1534fMaxSigmaClZ(0),
1535fNMaxSigmaCl(3)
1536{
e43c066c 1537 //--------------------------------------------------------------------
1538 //default AliITSlayer constructor
1539 //--------------------------------------------------------------------
e50912db 1540 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1541 fClusterWeight[i]=0;
1542 fClusterTracks[0][i]=-1;
1543 fClusterTracks[1][i]=-1;
1544 fClusterTracks[2][i]=-1;
9cd19c63 1545 fClusterTracks[3][i]=-1;
1546 fY[i]=0;
1547 fZ[i]=0;
1548 }
1549 fYB[0]=0;
1550 fYB[1]=0;
1551
4edc3c8c 1552 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
9cd19c63 1553 for (Int_t j1=0; j1<6; j1++) {
1554 fClusters5[j1][j]=0;
1555 fClusterIndex5[j1][j]=-1;
1556 fY5[j1][j]=0;
1557 fZ5[j1][j]=0;
1558 fN5[j1]=0;
1559 fBy5[j1][0]=0;
1560 fBy5[j1][1]=0;
1561 }
1562 }
1563
4edc3c8c 1564 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
9cd19c63 1565 for (Int_t j1=0; j1<11; j1++) {
1566 fClusters10[j1][j]=0;
1567 fClusterIndex10[j1][j]=-1;
1568 fY10[j1][j]=0;
1569 fZ10[j1][j]=0;
1570 fN10[j1]=0;
1571 fBy10[j1][0]=0;
1572 fBy10[j1][1]=0;
1573 }
e43c066c 1574 }
9cd19c63 1575
4edc3c8c 1576 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
9cd19c63 1577 for (Int_t j1=0; j1<21; j1++) {
1578 fClusters20[j1][j]=0;
1579 fClusterIndex20[j1][j]=-1;
1580 fY20[j1][j]=0;
1581 fZ20[j1][j]=0;
1582 fN20[j1]=0;
1583 fBy20[j1][0]=0;
1584 fBy20[j1][1]=0;
1585 }
1586 }
4edc3c8c 1587 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
e8c2bf0d 1588 fClusters[i]=NULL;
1589 fClusterIndex[i]=0;
1590 }
e43c066c 1591}
44347160 1592//------------------------------------------------------------------------
e43c066c 1593AliITStrackerMI::AliITSlayer::
8221b41b 1594AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1595fR(r),
1596fPhiOffset(p),
1597fNladders(nl),
1598fZOffset(z),
1599fNdetectors(nd),
1600fDetectors(0),
1601fN(0),
1602fDy5(0),
1603fDy10(0),
1604fDy20(0),
1605fClustersCs(0),
1606fClusterIndexCs(0),
1607fYcs(0),
1608fZcs(0),
1609fNcs(0),
1610fCurrentSlice(-1),
d9ead1a0 1611fZmin(0),
8221b41b 1612fZmax(0),
1613fYmin(0),
1614fYmax(0),
1615fI(0),
1616fImax(0),
1617fSkip(0),
1618fAccepted(0),
d9ead1a0 1619fRoad(0),
1620fMaxSigmaClY(0),
1621fMaxSigmaClZ(0),
1622fNMaxSigmaCl(3) {
e43c066c 1623 //--------------------------------------------------------------------
1624 //main AliITSlayer constructor
1625 //--------------------------------------------------------------------
e43c066c 1626 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1627 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
9cd19c63 1628
1629 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1630 fClusterWeight[i]=0;
1631 fClusterTracks[0][i]=-1;
1632 fClusterTracks[1][i]=-1;
1633 fClusterTracks[2][i]=-1;
1634 fClusterTracks[3][i]=-1;
1635 fY[i]=0;
1636 fZ[i]=0;
1637 }
1638
1639 fYB[0]=0;
1640 fYB[1]=0;
1641
4edc3c8c 1642 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
9cd19c63 1643 for (Int_t j1=0; j1<6; j1++) {
1644 fClusters5[j1][j]=0;
1645 fClusterIndex5[j1][j]=-1;
1646 fY5[j1][j]=0;
1647 fZ5[j1][j]=0;
1648 fN5[j1]=0;
1649 fBy5[j1][0]=0;
1650 fBy5[j1][1]=0;
1651 }
1652 }
1653
4edc3c8c 1654 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
9cd19c63 1655 for (Int_t j1=0; j1<11; j1++) {
1656 fClusters10[j1][j]=0;
1657 fClusterIndex10[j1][j]=-1;
1658 fY10[j1][j]=0;
1659 fZ10[j1][j]=0;
1660 fN10[j1]=0;
1661 fBy10[j1][0]=0;
1662 fBy10[j1][1]=0;
1663 }
1664 }
1665
4edc3c8c 1666 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
9cd19c63 1667 for (Int_t j1=0; j1<21; j1++) {
1668 fClusters20[j1][j]=0;
1669 fClusterIndex20[j1][j]=-1;
1670 fY20[j1][j]=0;
1671 fZ20[j1][j]=0;
1672 fN20[j1]=0;
1673 fBy20[j1][0]=0;
1674 fBy20[j1][1]=0;
1675 }
1676 }
4edc3c8c 1677 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
e8c2bf0d 1678 fClusters[i]=NULL;
1679 fClusterIndex[i]=0;
1680 }
e43c066c 1681}
225cff59 1682/*
44347160 1683//------------------------------------------------------------------------
8221b41b 1684AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1685fR(layer.fR),
1686fPhiOffset(layer.fPhiOffset),
1687fNladders(layer.fNladders),
1688fZOffset(layer.fZOffset),
1689fNdetectors(layer.fNdetectors),
1690fDetectors(layer.fDetectors),
1691fN(layer.fN),
1692fDy5(layer.fDy5),
1693fDy10(layer.fDy10),
1694fDy20(layer.fDy20),
1695fClustersCs(layer.fClustersCs),
1696fClusterIndexCs(layer.fClusterIndexCs),
1697fYcs(layer.fYcs),
1698fZcs(layer.fZcs),
1699fNcs(layer.fNcs),
1700fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1701fZmin(layer.fZmin),
8221b41b 1702fZmax(layer.fZmax),
1703fYmin(layer.fYmin),
1704fYmax(layer.fYmax),
1705fI(layer.fI),
1706fImax(layer.fImax),
1707fSkip(layer.fSkip),
1708fAccepted(layer.fAccepted),
d9ead1a0 1709fRoad(layer.fRoad),
1710fMaxSigmaClY(layer.fMaxSigmaClY),
1711fMaxSigmaClZ(layer.fMaxSigmaClZ),
1712fNMaxSigmaCl(layer.fNMaxSigmaCl)
1713{
8221b41b 1714 //Copy constructor
1715}
225cff59 1716*/
44347160 1717//------------------------------------------------------------------------
e43c066c 1718AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1719 //--------------------------------------------------------------------
1720 // AliITSlayer destructor
1721 //--------------------------------------------------------------------
23197852 1722 delete [] fDetectors;
e43c066c 1723 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1724 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1725 fClusterWeight[i]=0;
1726 fClusterTracks[0][i]=-1;
1727 fClusterTracks[1][i]=-1;
1728 fClusterTracks[2][i]=-1;
1729 fClusterTracks[3][i]=-1;
1730 }
1731}
44347160 1732//------------------------------------------------------------------------
e43c066c 1733void AliITStrackerMI::AliITSlayer::ResetClusters() {
1734 //--------------------------------------------------------------------
1735 // This function removes loaded clusters
1736 //--------------------------------------------------------------------
1737 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1738 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1739 fClusterWeight[i]=0;
1740 fClusterTracks[0][i]=-1;
1741 fClusterTracks[1][i]=-1;
1742 fClusterTracks[2][i]=-1;
1743 fClusterTracks[3][i]=-1;
1744 }
1745
1746 fN=0;
1747 fI=0;
1748}
44347160 1749//------------------------------------------------------------------------
e43c066c 1750void AliITStrackerMI::AliITSlayer::ResetWeights() {
1751 //--------------------------------------------------------------------
1752 // This function reset weights of the clusters
1753 //--------------------------------------------------------------------
e50912db 1754 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1755 fClusterWeight[i]=0;
1756 fClusterTracks[0][i]=-1;
1757 fClusterTracks[1][i]=-1;
1758 fClusterTracks[2][i]=-1;
1759 fClusterTracks[3][i]=-1;
1760 }
1761 for (Int_t i=0; i<fN;i++) {
00a7cc50 1762 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1763 if (cl&&cl->IsUsed()) cl->Use();
1764 }
1765
1766}
44347160 1767//------------------------------------------------------------------------
e43c066c 1768void AliITStrackerMI::AliITSlayer::ResetRoad() {
1769 //--------------------------------------------------------------------
1770 // This function calculates the road defined by the cluster density
1771 //--------------------------------------------------------------------
1772 Int_t n=0;
1773 for (Int_t i=0; i<fN; i++) {
1774 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1775 }
afd25725 1776 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1777}
44347160 1778//------------------------------------------------------------------------
afd25725 1779Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1780 //--------------------------------------------------------------------
1781 //This function adds a cluster to this layer
1782 //--------------------------------------------------------------------
e50912db 1783 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1784 return 1;
1785 }
1786 fCurrentSlice=-1;
afd25725 1787 fClusters[fN]=cl;
1d4090b7 1788 fN++;
afd25725 1789 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1790 //AD
1791 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1792 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1793 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1794 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1795 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1796 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1797 //AD
1798 /*
afd25725 1799 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1800 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1801 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1802 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1803 */
e43c066c 1804 return 0;
1805}
44347160 1806//------------------------------------------------------------------------
e43c066c 1807void AliITStrackerMI::AliITSlayer::SortClusters()
1808{
1809 //
1810 //sort clusters
1811 //
00a7cc50 1812 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1813 Float_t *z = new Float_t[fN];
1814 Int_t * index = new Int_t[fN];
1815 //
d9ead1a0 1816 fMaxSigmaClY=0.; //AD
1817 fMaxSigmaClZ=0.; //AD
1818
1d4090b7 1819 for (Int_t i=0;i<fN;i++){
1820 z[i] = fClusters[i]->GetZ();
d9ead1a0 1821 // save largest errors in y and z for this layer
1822 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1823 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1824 }
1825 TMath::Sort(fN,z,index,kFALSE);
1826 for (Int_t i=0;i<fN;i++){
1827 clusters[i] = fClusters[index[i]];
1828 }
1829 //
1830 for (Int_t i=0;i<fN;i++){
1831 fClusters[i] = clusters[i];
1832 fZ[i] = fClusters[i]->GetZ();
1833 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1834 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1835 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1836 fY[i] = y;
1837 }
1838 delete[] index;
1839 delete[] z;
1840 delete[] clusters;
1841 //
1842
e43c066c 1843 fYB[0]=10000000;
1844 fYB[1]=-10000000;
1845 for (Int_t i=0;i<fN;i++){
1846 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1847 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1848 fClusterIndex[i] = i;
1849 }
1850 //
1851 // fill slices
1852 fDy5 = (fYB[1]-fYB[0])/5.;
1853 fDy10 = (fYB[1]-fYB[0])/10.;
1854 fDy20 = (fYB[1]-fYB[0])/20.;
1855 for (Int_t i=0;i<6;i++) fN5[i] =0;
1856 for (Int_t i=0;i<11;i++) fN10[i]=0;
1857 for (Int_t i=0;i<21;i++) fN20[i]=0;
1858 //
1859 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;}
1860 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;}
1861 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;}
1862 //
1863 //
1d4090b7 1864 for (Int_t i=0;i<fN;i++)
1865 for (Int_t irot=-1;irot<=1;irot++){
1866 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1867 // slice 5
1868 for (Int_t slice=0; slice<6;slice++){
e50912db 1869 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1870 fClusters5[slice][fN5[slice]] = fClusters[i];
1871 fY5[slice][fN5[slice]] = curY;
1872 fZ5[slice][fN5[slice]] = fZ[i];
1873 fClusterIndex5[slice][fN5[slice]]=i;
1874 fN5[slice]++;
1875 }
e43c066c 1876 }
1d4090b7 1877 // slice 10
1878 for (Int_t slice=0; slice<11;slice++){
e50912db 1879 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1880 fClusters10[slice][fN10[slice]] = fClusters[i];
1881 fY10[slice][fN10[slice]] = curY;
1882 fZ10[slice][fN10[slice]] = fZ[i];
1883 fClusterIndex10[slice][fN10[slice]]=i;
1884 fN10[slice]++;
1885 }
e43c066c 1886 }
1d4090b7 1887 // slice 20
1888 for (Int_t slice=0; slice<21;slice++){
e50912db 1889 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1890 fClusters20[slice][fN20[slice]] = fClusters[i];
1891 fY20[slice][fN20[slice]] = curY;
1892 fZ20[slice][fN20[slice]] = fZ[i];
1893 fClusterIndex20[slice][fN20[slice]]=i;
1894 fN20[slice]++;
1895 }
1896 }
e43c066c 1897 }
1d4090b7 1898
1899 //
1900 // consistency check
1901 //
1902 for (Int_t i=0;i<fN-1;i++){
1903 if (fZ[i]>fZ[i+1]){
ae00569a 1904 printf("Bug\n");
e43c066c 1905 }
1906 }
1d4090b7 1907 //
1908 for (Int_t slice=0;slice<21;slice++)
1909 for (Int_t i=0;i<fN20[slice]-1;i++){
1910 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1911 printf("Bug\n");
1d4090b7 1912 }
1913 }
1914
1915
e43c066c 1916}
44347160 1917//------------------------------------------------------------------------
e43c066c 1918Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1919 //--------------------------------------------------------------------
1920 // This function returns the index of the nearest cluster
1921 //--------------------------------------------------------------------
1922 Int_t ncl=0;
1923 const Float_t *zcl;
1924 if (fCurrentSlice<0) {
1925 ncl = fN;
1926 zcl = fZ;
1927 }
1928 else{
1929 ncl = fNcs;
1930 zcl = fZcs;;
1931 }
1932
1933 if (ncl==0) return 0;
1934 Int_t b=0, e=ncl-1, m=(b+e)/2;
1935 for (; b<e; m=(b+e)/2) {
1936 // if (z > fClusters[m]->GetZ()) b=m+1;
1937 if (z > zcl[m]) b=m+1;
1938 else e=m;
1939 }
1940 return m;
1941}
44347160 1942//------------------------------------------------------------------------
1c97ce2f 1943Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1944 //--------------------------------------------------------------------
1945 // This function computes the rectangular road for this track
1946 //--------------------------------------------------------------------
1947
1948
1949 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1950 // take into account the misalignment: propagate track to misaligned detector plane
1951 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1952
1953 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1954 TMath::Sqrt(track->GetSigmaZ2() +
1955 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1956 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1957 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1958 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1959 TMath::Sqrt(track->GetSigmaY2() +
1960 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1961 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1962 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1963
1964 // track at boundary between detectors, enlarge road
1965 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1966 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1967 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1968 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1969 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1970 Float_t tgl = TMath::Abs(track->GetTgl());
1971 if (tgl > 1.) tgl=1.;
1972 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1973 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1974 Float_t snp = TMath::Abs(track->GetSnp());
1975 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1976 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1977 } // boundary
1978
1979 // add to the road a term (up to 2-3 mm) to deal with misalignments
1980 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1981 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1982
1983 Double_t r = fgLayers[ilayer].GetR();
1984 zmin = track->GetZ() - dz;
1985 zmax = track->GetZ() + dz;
1986 ymin = track->GetY() + r*det.GetPhi() - dy;
1987 ymax = track->GetY() + r*det.GetPhi() + dy;
1988
1989 // bring track back to idead detector plane
1990 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1991
1992 return kTRUE;
1993}
1994//------------------------------------------------------------------------
e43c066c 1995void AliITStrackerMI::AliITSlayer::
1996SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1997 //--------------------------------------------------------------------
1998 // This function sets the "window"
1999 //--------------------------------------------------------------------
2000
628e7bb0 2001 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 2002 fYmin = ymin;
2003 fYmax = ymax;
2004 fZmin = zmin;
2005 fZmax = zmax;
2006 // AD
2007 // enlarge road in y by maximum cluster error on this layer (3 sigma)
2008 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
2009 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
2010 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
2011 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
2012
e43c066c 2013 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 2014 if (ymiddle<fYB[0]) {
2015 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
2016 } else if (ymiddle>fYB[1]) {
2017 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 2018 }
ae00569a 2019
e43c066c 2020 //
2021 fCurrentSlice =-1;
2022 // defualt take all
2023 fClustersCs = fClusters;
2024 fClusterIndexCs = fClusterIndex;
2025 fYcs = fY;
2026 fZcs = fZ;
2027 fNcs = fN;
628e7bb0 2028 //
e43c066c 2029 //is in 20 slice?
2030 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
2031 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
2032 if (slice<0) slice=0;
2033 if (slice>20) slice=20;
2034 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
2035 if (isOK) {
2036 fCurrentSlice=slice;
2037 fClustersCs = fClusters20[fCurrentSlice];
2038 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
2039 fYcs = fY20[fCurrentSlice];
2040 fZcs = fZ20[fCurrentSlice];
2041 fNcs = fN20[fCurrentSlice];
2042 }
2043 }
2044 //
2045 //is in 10 slice?
2046 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
2047 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
2048 if (slice<0) slice=0;
2049 if (slice>10) slice=10;
2050 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
2051 if (isOK) {
2052 fCurrentSlice=slice;
2053 fClustersCs = fClusters10[fCurrentSlice];
2054 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
2055 fYcs = fY10[fCurrentSlice];
2056 fZcs = fZ10[fCurrentSlice];
2057 fNcs = fN10[fCurrentSlice];
2058 }
2059 }
2060 //
2061 //is in 5 slice?
2062 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
2063 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
2064 if (slice<0) slice=0;
2065 if (slice>5) slice=5;
2066 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 2067 if (isOK) {
e43c066c 2068 fCurrentSlice=slice;
2069 fClustersCs = fClusters5[fCurrentSlice];
2070 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
2071 fYcs = fY5[fCurrentSlice];
2072 fZcs = fZ5[fCurrentSlice];
2073 fNcs = fN5[fCurrentSlice];
2074 }
2075 }
628e7bb0 2076 //
d9ead1a0 2077 fI = FindClusterIndex(fZmin);
2078 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
2079 fSkip = 0;
2080 fAccepted = 0;
6518a6c5 2081
2082 return;
e43c066c 2083}
44347160 2084//------------------------------------------------------------------------
628e7bb0 2085Int_t AliITStrackerMI::AliITSlayer::
2086FindDetectorIndex(Double_t phi, Double_t z) const {
2087 //--------------------------------------------------------------------
2088 //This function finds the detector crossed by the track
2089 //--------------------------------------------------------------------
31fb8575 2090 Double_t dphi;
2091 if (fZOffset<0) // old geometry
2092 dphi = -(phi-fPhiOffset);
2093 else // new geometry
2094 dphi = phi-fPhiOffset;
2095
6518a6c5 2096
628e7bb0 2097 if (dphi < 0) dphi += 2*TMath::Pi();
2098 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
2099 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
2100 if (np>=fNladders) np-=fNladders;
2101 if (np<0) np+=fNladders;
2102
6518a6c5 2103
628e7bb0 2104 Double_t dz=fZOffset-z;
6518a6c5 2105 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
2106 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 2107 if (nz>=fNdetectors || nz<0) {
2108 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2109 return -1;
2110 }
628e7bb0 2111
23197852 2112 // ad hoc correction for 3rd ladder of SDD inner layer,
2113 // which is reversed (rotated by pi around local y)
2114 // this correction is OK only from AliITSv11Hybrid onwards
2115 if (GetR()>12. && GetR()<20.) { // SDD inner
2116 if(np==2) { // 3rd ladder
6801b453 2117 Double_t posMod252[3];
2118 AliITSgeomTGeo::GetTranslation(252,posMod252);
2119 // check the Z coordinate of Mod 252: if negative
2120 // (old SDD geometry in AliITSv11Hybrid)
2121 // the swap of numeration whould be applied
2122 if(posMod252[2]<0.){
2123 nz = (fNdetectors-1) - nz;
2124 }
2125 }
23197852 2126 }
2127 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2128
2129
628e7bb0 2130 return np*fNdetectors + nz;
2131}
44347160 2132//------------------------------------------------------------------------
ae00569a 2133const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
2134{
e43c066c 2135 //--------------------------------------------------------------------
2136 // This function returns clusters within the "window"
2137 //--------------------------------------------------------------------
2138
ae00569a 2139 if (fCurrentSlice<0) {
e43c066c 2140 Double_t rpi2 = 2.*fR*TMath::Pi();
2141 for (Int_t i=fI; i<fImax; i++) {
2142 Double_t y = fY[i];
d9ead1a0 2143 Double_t z = fZ[i];
e43c066c 2144 if (fYmax<y) y -= rpi2;
1d4090b7 2145 if (fYmin>y) y += rpi2;
e43c066c 2146 if (y<fYmin) continue;
2147 if (y>fYmax) continue;
d9ead1a0 2148 // AD
2149 // skip clusters that are in "extended" road but they
2150 // 3sigma error does not touch the original road
2151 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
2152 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
2153 //
88e3c173 2154 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2155 ci=i;
ae00569a 2156 if (!test) fI=i+1;
e43c066c 2157 return fClusters[i];
2158 }
ae00569a 2159 } else {
e43c066c 2160 for (Int_t i=fI; i<fImax; i++) {
2161 if (fYcs[i]<fYmin) continue;
2162 if (fYcs[i]>fYmax) continue;
88e3c173 2163 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2164 ci=fClusterIndexCs[i];
ae00569a 2165 if (!test) fI=i+1;
e43c066c 2166 return fClustersCs[i];
2167 }
2168 }
2169 return 0;
2170}
44347160 2171//------------------------------------------------------------------------
e43c066c 2172Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
2173const {
2174 //--------------------------------------------------------------------
afd25725 2175 // This function returns the layer thickness at this point (units X0)
e43c066c 2176 //--------------------------------------------------------------------
2177 Double_t d=0.0085;
e50912db 2178 x0=AliITSRecoParam::GetX0Air();
e43c066c 2179 if (43<fR&&fR<45) { //SSD2
2180 Double_t dd=0.0034;
2181 d=dd;
2182 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2183 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2184 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2185 for (Int_t i=0; i<12; i++) {
2186 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2187 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2188 d+=0.0034;
2189 break;
2190 }
2191 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2192 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2193 d+=0.0034;
2194 break;
2195 }
2196 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2197 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2198 }
2199 } else
2200 if (37<fR&&fR<41) { //SSD1
2201 Double_t dd=0.0034;
2202 d=dd;
2203 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2204 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2205 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2206 for (Int_t i=0; i<11; i++) {
2207 if (TMath::Abs(z-3.9*i)<0.15) {
2208 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2209 d+=dd;
2210 break;
2211 }
2212 if (TMath::Abs(z+3.9*i)<0.15) {
2213 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2214 d+=dd;
2215 break;
2216 }
2217 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2218 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2219 }
2220 } else
2221 if (13<fR&&fR<26) { //SDD
2222 Double_t dd=0.0033;
2223 d=dd;
2224 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2225
2226 if (TMath::Abs(y-1.80)<0.55) {
2227 d+=0.016;
2228 for (Int_t j=0; j<20; j++) {
2229 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2230 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2231 }
2232 }
2233 if (TMath::Abs(y+1.80)<0.55) {
2234 d+=0.016;
2235 for (Int_t j=0; j<20; j++) {
2236 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2237 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2238 }
2239 }
2240
2241 for (Int_t i=0; i<4; i++) {
2242 if (TMath::Abs(z-7.3*i)<0.60) {
2243 d+=dd;
2244 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2245 break;
2246 }
2247 if (TMath::Abs(z+7.3*i)<0.60) {
2248 d+=dd;
2249 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2250 break;
2251 }
2252 }
2253 } else
2254 if (6<fR&&fR<8) { //SPD2
2255 Double_t dd=0.0063; x0=21.5;
2256 d=dd;
2257 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2258 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2259 } else
2260 if (3<fR&&fR<5) { //SPD1
2261 Double_t dd=0.0063; x0=21.5;
2262 d=dd;
2263 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2264 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2265 }
2266
2267 return d;
2268}
44347160 2269//------------------------------------------------------------------------
23197852 2270AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2271fR(det.fR),
1c97ce2f 2272fRmisal(det.fRmisal),
23197852 2273fPhi(det.fPhi),
2274fSinPhi(det.fSinPhi),
2275fCosPhi(det.fCosPhi),
2276fYmin(det.fYmin),
2277fYmax(det.fYmax),
2278fZmin(det.fZmin),
2279fZmax(det.fZmax),
2280fIsBad(det.fIsBad),
2281fNChips(det.fNChips),
2282fChipIsBad(det.fChipIsBad)
2283{
2284 //Copy constructor
2285}
2286//------------------------------------------------------------------------
2287void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2288 const AliITSDetTypeRec *detTypeRec)
23197852 2289{
2290 //--------------------------------------------------------------------
2291 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2292 //--------------------------------------------------------------------
2293
2294 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2295 // while in the tracker they start from 0 for each layer
2296 for(Int_t il=0; il<ilayer; il++)
2297 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2298
2299 Int_t detType;
2300 if (ilayer==0 || ilayer==1) { // ---------- SPD
2301 detType = 0;
2302 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2303 detType = 1;
2304 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2305 detType = 2;
2306 } else {
2307 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2308 return;
2309 }
2310
2311 // Get calibration from AliITSDetTypeRec
2312 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2313 calib->SetModuleIndex(idet);
23197852 2314 AliITSCalibration *calibSPDdead = 0;
2315 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2316 if (calib->IsBad() ||
2317 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2318 {
2319 SetBad();
359ac74d 2320 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2321 }
2322
2323 // Get segmentation from AliITSDetTypeRec
2324 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2325
2326 // Read info about bad chips
2327 fNChips = segm->GetMaximumChipIndex()+1;
2328 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2329 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2330 fChipIsBad = new Bool_t[fNChips];
2331 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2332 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2333 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2334 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2335 }
2336
2337 return;
2338}
2339//------------------------------------------------------------------------
e50912db 2340Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2341{
2342 //--------------------------------------------------------------------
afd25725 2343 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2344 //--------------------------------------------------------------------
e43c066c 2345
e50912db 2346 if(fUseTGeo!=0) {
2347 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2348 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2349 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2350 }
2351
afd25725 2352 // beam pipe
e50912db 2353 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2354 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2355
2356 // layers
2357 Double_t x0=0;
e43c066c 2358 Double_t xn=fgLayers[fI].GetR();
2359 for (Int_t i=0; i<fI; i++) {
2360 Double_t xi=fgLayers[i].GetR();
e50912db 2361 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2362 d+=dLayer*xi*xi;
e43c066c 2363 }
2364
afd25725 2365 // shields
e43c066c 2366 if (fI>1) {
e50912db 2367 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2368 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2369 }
e43c066c 2370 if (fI>3) {
e50912db 2371 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2372 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2373 }
e43c066c 2374 return d/(xn*xn);
2375}
a4354152 2376
2377//------------------------------------------------------------------------
2378Int_t AliITStrackerMI::GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS)
2379{
2380 //--------------------------------------------------------------------
2381 // Returns the array of layers between the current layer and the vertex
2382 //--------------------------------------------------------------------
2383 //
2384 if(fUseTGeo!=0) {
2385 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2386 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2387 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2388 }
2389
2390 int nl = 0;
2391 double x0 = 0;
2392 for (int il=fI;il--;) {
2393 //
2394 if (il==3) {
2395 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2396 xMS[nl++] = AliITSRecoParam::GetrInsideShield(1);
2397 }
2398 else if (il==1) {
2399 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2400 xMS[nl++] = AliITSRecoParam::GetrInsideShield(0);
2401 }
2402 //
2403 x2x0MS[nl] = (fUseTGeo==0 ? fgLayers[il].GetThickness(0,0,x0) : fxOverX0Layer[il]);
2404 xMS[nl++] = fgLayers[il].GetR();
2405 //
2406 }
2407 //
2408 // beam pipe
2409 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2410 xMS[nl++] = AliITSRecoParam::GetrPipe();
2411 //
2412 return nl;
2413}
2414
2415
44347160 2416//------------------------------------------------------------------------
e43c066c 2417Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2418 //-------------------------------------------------------------------
e43c066c 2419 // This function returns number of clusters within the "window"
2420 //--------------------------------------------------------------------
2421 Int_t ncl=0;
2422 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2423 const AliITSRecPoint *c=fClusters[i];
e43c066c 2424 if (c->GetZ() > fZmax) break;
2425 if (c->IsUsed()) continue;
2426 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2427 Double_t y=fR*det.GetPhi() + c->GetY();
2428
2429 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2430 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2431
2432 if (y<fYmin) continue;
2433 if (y>fYmax) continue;
2434 ncl++;
2435 }
2436 return ncl;
2437}
44347160 2438//------------------------------------------------------------------------
ae00569a 2439Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2440 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2441{
e43c066c 2442 //--------------------------------------------------------------------
ae00569a 2443 // This function refits the track "track" at the position "x" using
2444 // the clusters from "clusters"
ef7253ac 2445 // If "extra"==kTRUE,
ae00569a 2446 // the clusters from overlapped modules get attached to "track"
7167ae53 2447 // If "planeff"==kTRUE,
2448 // special approach for plane efficiency evaluation is applyed
e43c066c 2449 //--------------------------------------------------------------------
6518a6c5 2450
e50912db 2451 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2452 Int_t k;
e50912db 2453 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2454 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2455 for (k=0; k<nc; k++) {
ae00569a 2456 Int_t idx=clusters->GetClusterIndex(k);
2457 Int_t ilayer=(idx&0xf0000000)>>28;
2458 index[ilayer]=idx;
e43c066c 2459 }
67c1e979 2460
7167ae53 2461 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2462}
44347160 2463//------------------------------------------------------------------------
ae00569a 2464Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2465 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2466{
67c1e979 2467 //--------------------------------------------------------------------
ae00569a 2468 // This function refits the track "track" at the position "x" using
67c1e979 2469 // the clusters from array
ae00569a 2470 // If "extra"==kTRUE,
2471 // the clusters from overlapped modules get attached to "track"
7167ae53 2472 // If "planeff"==kTRUE,
2473 // special approach for plane efficiency evaluation is applyed
67c1e979 2474 //--------------------------------------------------------------------
e50912db 2475 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2476 Int_t k;
e50912db 2477 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2478 //
e50912db 2479 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2480 index[k]=clusters[k];
67c1e979 2481 }
2482
74008278 2483 // special for cosmics and TPC prolonged tracks:
269709f8 2484 // propagate to the innermost of:
2485 // - innermost layer crossed by the track
2486 // - innermost layer where a cluster was associated to the track
74008278 2487 static AliITSRecoParam *repa = NULL;
2488 if(!repa){
2489 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2490 if(!repa){
2491 repa = AliITSRecoParam::GetHighFluxParam();
2492 AliWarning("Using default AliITSRecoParam class");
2493 }
2494 }
2495 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2496 ULong_t trStatus=0;
2497 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2498 Int_t innermostlayer=0;
15f91fcd 2499 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2500 innermostlayer=5;
2501 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2502 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2503 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2504 index[innermostlayer] >= 0 ) break;
74008278 2505 }
269709f8 2506
74008278 2507 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2508 }
afd25725 2509
ae00569a 2510 Int_t modstatus=1; // found
2511 Float_t xloc,zloc;
67c1e979 2512 Int_t from, to, step;
ae00569a 2513 if (xx > track->GetX()) {
e50912db 2514 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2515 step=+1;
2516 } else {
e50912db 2517 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2518 step=-1;
2519 }
ae00569a 2520 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2521
ae00569a 2522 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2523 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2524 Double_t r=layer.GetR();
4fa7f7d1 2525
afd25725 2526 if (step<0 && xx>r) break;
2527
2528 // material between SSD and SDD, SDD and SPD
6518a6c5 2529 Double_t hI=ilayer-0.5*step;
e50912db 2530 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2531 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2532 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2533 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2534
ae00569a 2535
afd25725 2536 Double_t oldGlobXYZ[3];
d1181f10 2537 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2538
67178f34 2539 // continue if we are already beyond this layer
2540 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2541 if(step>0 && oldGlobR > r) continue; // going outward
2542 if(step<0 && oldGlobR < r) continue; // going inward
2543
8602c008 2544 Double_t phi,z;
ae00569a 2545 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2546
67c1e979 2547 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2548
2549 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2550 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2551 if (skip==2) {
ae00569a 2552 modstatus = 4; // out in z
d1181f10 2553 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2554 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2555 }
7131593b 2556 // cross layer
2557 // apply correction for material of the current layer
2558 // add time if going outward
2559 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2560 continue;
2561 }
2562
e50912db 2563 if (idet<0) return kFALSE;
ae00569a 2564
4fa7f7d1 2565
67c1e979 2566 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2567 // only for ITS-SA tracks refit
2568 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2569 //
1c97ce2f 2570 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2571
ae00569a 2572 track->SetDetectorIndex(idet);
d1181f10 2573 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2574
23197852 2575 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2576
2577 const AliITSRecPoint *clAcc=0;
44347160 2578 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2579
6518a6c5 2580 Int_t idx=index[ilayer];
ae00569a 2581 if (idx>=0) { // cluster in this layer
2582 modstatus = 6; // no refit
2583 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2584 if (cl) {
2585 if (idet != cl->GetDetectorIndex()) {
2586 idet=cl->GetDetectorIndex();
a5d0fae6 2587 const AliITSdetector &detc=layer.GetDetector(idet);
2588 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2589 track->SetDetectorIndex(idet);
d1181f10 2590 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2591 }
ae00569a 2592 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2593 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2594 if (chi2<maxchi2) {
2595 clAcc=cl;
2596 maxchi2=chi2;
2597 modstatus = 1; // found
2598 } else {
7167ae53 2599 return kFALSE; //
ae00569a 2600 }
2601 }
2602 } else { // no cluster in this layer
2603 if (skip==1) {
2604 modstatus = 3; // skipped
0ed58a47 2605 // Plane Eff determination:
2606 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2607 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2608 UseTrackForPlaneEff(track,ilayer);
7167ae53 2609 }
ae00569a 2610 } else {
2611 modstatus = 5; // no cls in road
2612 // check dead
1c97ce2f 2613 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2614 dz = 0.5*(zmax-zmin);
2615 dy = 0.5*(ymax-ymin);
2616 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2617 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2618 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2619 }
e43c066c 2620 }
ae00569a 2621
2622 if (clAcc) {
2623 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2624 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2625 }
ae00569a 2626 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2627
2628
ef3508c5 2629 if (extra && clAcc) { // search for extra clusters in overlapped modules
ae00569a 2630 AliITStrackV2 tmp(*track);
1c97ce2f 2631 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2632 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2633
2634 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2635 Int_t idetExtra=-1;
a5d0fae6 2636 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2637 Double_t tolerance=0.1;
ae00569a 2638 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2639 // only clusters in another module! (overlaps)
2640 idetExtra = clExtra->GetDetectorIndex();
2641 if (idet == idetExtra) continue;
2642
a5d0fae6 2643 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2644
1c97ce2f 2645 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2646 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2647 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2648 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2649
2650 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2651 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2652 }
2653 if (cci>=0) {
2654 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2655 track->SetExtraModule(ilayer,idetExtra);
2656 }
2657 } // end search for extra clusters in overlapped modules
1c97ce2f 2658
afd25725 2659 // Correct for material of the current layer
7131593b 2660 // cross material
2661 // add time if going outward
ae00569a 2662 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2663 track->SetCheckInvariant(kTRUE);
ae00569a 2664 } // end loop on layers
2665
db355ee7 2666 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2667
e43c066c 2668 return kTRUE;
2669}
44347160 2670//------------------------------------------------------------------------
15dd636f 2671Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2672{
2673 //
2674 // calculate normalized chi2
2675 // return NormalizedChi2(track,0);
2676 Float_t chi2 = 0;
2677 Float_t sum=0;
2678 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2679 // track->fdEdxMismatch=0;
2680 Float_t dedxmismatch =0;
2681 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2682 if (mode<100){
2683 for (Int_t i = 0;i<6;i++){
9fd412a8 2684 if (track->GetClIndex(i)>=0){
e43c066c 2685 Float_t cerry, cerrz;
2686 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2687 else
b9671574 2688 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2689 cerry*=cerry;
2690 cerrz*=cerrz;
b9671574 2691 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2692 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2693 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2694 if (ratio<0.5) {
2695 cchi2+=(0.5-ratio)*10.;
2696 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2697 dedxmismatch+=(0.5-ratio)*10.;
2698 }
2699 }
2700 if (i<2 ||i>3){
b9671574 2701 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2702 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2703 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2704 if (i<2) chi2+=2*cl->GetDeltaProbability();
2705 }
2706 chi2+=cchi2;
2707 sum++;
2708 }
2709 }
b9671574 2710 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2711 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2712 }
2713 }
2714 else{
2715 for (Int_t i = 0;i<4;i++){
9fd412a8 2716 if (track->GetClIndex(i)>=0){
e43c066c 2717 Float_t cerry, cerrz;
2718 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2719 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2720 cerry*=cerry;
2721 cerrz*=cerrz;
b9671574 2722 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2723 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2724 sum++;
2725 }
2726 }
2727 for (Int_t i = 4;i<6;i++){
9fd412a8 2728 if (track->GetClIndex(i)>=0){
e43c066c 2729 Float_t cerry, cerrz;
2730 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2731 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2732 cerry*=cerry;
2733 cerrz*=cerrz;
2734 Float_t cerryb, cerrzb;
2735 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2736 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2737 cerryb*=cerryb;
2738 cerrzb*=cerrzb;
b9671574 2739 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2740 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2741 sum++;
2742 }
2743 }
2744 }
b9671574 2745 if (track->GetESDtrack()->GetTPCsignal()>85){
2746 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2747 if (ratio<0.5) {
2748 chi2+=(0.5-ratio)*5.;
2749 }
2750 if (ratio>2){
2751 chi2+=(ratio-2.0)*3;
2752 }
2753 }
2754 //
b9671574 2755 Double_t match = TMath::Sqrt(track->GetChi22());
2756 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2757 if (!track->GetConstrain()) {
2758 if (track->GetNumberOfClusters()>2) {
2759 match/=track->GetNumberOfClusters()-2.;
2760 } else {
2761 match=0;
2762 }
2763 }
e43c066c 2764 if (match<0) match=0;
f8720bda 2765
2766 // penalty factor for missing points (NDeadZone>0), but no penalty
2767 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2768 // or there is a dead from OCDB)
2769 Float_t deadzonefactor = 0.;
2770 if (track->GetNDeadZone()>0.) {
bf1cd124 2771 Int_t sumDeadZoneProbability=0;
2772 for(Int_t ilay=0;ilay<6;ilay++) {
2773 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2774 }
2775 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2776 if(nDeadZoneWithProbNot1>0) {
2777 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2778 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2779 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2780 Float_t one = 1.;
2781 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2782 deadzonefactor = 3.*(1.1-deadZoneProbability);
2783 }
2784 }
2785
b9671574 2786 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2787 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2788 1./(1.+track->GetNSkipped()));
a5a317a9 2789 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2790 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2791 return normchi2;
e43c066c 2792}
44347160 2793//------------------------------------------------------------------------
a70ed6ad 2794Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2795{
2796 //
2797 // return matching chi2 between two tracks
d1181f10 2798 Double_t largeChi2=1000.;
2799
15dd636f 2800 AliITStrackMI track3(*track2);
d1181f10 2801 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2802 TMatrixD vec(5,1);
6c94f330 2803 vec(0,0)=track1->GetY() - track3.GetY();
2804 vec(1,0)=track1->GetZ() - track3.GetZ();
2805 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2806 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2807 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2808 //
2809 TMatrixD cov(5,5);
6c94f330 2810 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2811 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2812 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2813 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2814 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2815
6c94f330 2816 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2817 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2818 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2819 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2820 //
6c94f330 2821 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2822 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2823 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2824 //
6c94f330 2825 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2826 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2827 //
6c94f330 2828 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2829
2830 cov.Invert();
2831 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2832 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2833 return chi2(0,0);
2834}
44347160 2835//------------------------------------------------------------------------
a70ed6ad 2836Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2837{
2838 //
afd25725 2839 // return probability that given point (characterized by z position and error)
2840 // is in SPD dead zone
bf1cd124 2841 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2842 //
afd25725 2843 Double_t probability = 0.;
bf1cd124 2844 Double_t nearestz = 0.,distz=0.;
2845 Int_t nearestzone = -1;
2846 Double_t mindistz = 1000.;
2847
2848 // find closest dead zone
2849 for (Int_t i=0; i<3; i++) {
2850 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2851 if (distz<mindistz) {
2852 nearestzone=i;
2853 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2854 mindistz=distz;
2855 }
2856 }
2857
2858 // too far from dead zone
2859 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2860
2861
afd25725 2862 Double_t zmin, zmax;
bf1cd124 2863 if (nearestzone==0) { // dead zone at z = -7
e50912db 2864 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2865 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2866 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2867 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2868 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2869 } else if (nearestzone==2) { // dead zone at z = +7
2870 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2871 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2872 } else {
2873 zmin = 0.;
2874 zmax = 0.;
e43c066c 2875 }
afd25725 2876 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2877 // dead zone)
bb7e41dd 2878 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2879 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2880 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2881 return probability;
2882}
44347160 2883//------------------------------------------------------------------------
a70ed6ad 2884Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2885{
2886 //
2887 // calculate normalized chi2
2888 Float_t chi2[6];
2889 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2890 Float_t ncl = 0;
2891 for (Int_t i = 0;i<6;i++){
b9671574 2892 if (TMath::Abs(track->GetDy(i))>0){
2893 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2894 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2895 ncl++;
2896 }
2897 else{chi2[i]=10000;}
2898 }
2899 Int_t index[6];
2900 TMath::Sort(6,chi2,index,kFALSE);
2901 Float_t max = float(ncl)*fac-1.;
2902 Float_t sumchi=0, sumweight=0;
2903 for (Int_t i=0;i<max+1;i++){
2904 Float_t weight = (i<max)?1.:(max+1.-i);
2905 sumchi+=weight*chi2[index[i]];
2906 sumweight+=weight;
2907 }
2908 Double_t normchi2 = sumchi/sumweight;
2909 return normchi2;
2910}
44347160 2911//------------------------------------------------------------------------
a70ed6ad 2912Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2913{
2914 //
2915 // calculate normalized chi2
2916 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2917 Int_t npoints = 0;
2918 Double_t res =0;
2919 for (Int_t i=0;i<6;i++){
b9671574 2920 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2921 Double_t sy1 = forwardtrack->GetSigmaY(i);
2922 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2923 Double_t sy2 = backtrack->GetSigmaY(i);
2924 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2925 if (i<2){ sy2=1000.;sz2=1000;}
2926 //
b9671574 2927 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2928 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2929 //
2930 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2931 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2932 //
2933 res+= nz0*nz0+ny0*ny0;
2934 npoints++;
2935 }
2936 if (npoints>1) return
6c23ffed 2937 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2938 //2*forwardtrack->fNUsed+
b9671574 2939 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2940 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2941 return 1000;
2942}
44347160 2943//------------------------------------------------------------------------
e43c066c 2944Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2945 //--------------------------------------------------------------------
2946 // Return pointer to a given cluster
2947 //--------------------------------------------------------------------
2948 Int_t l=(index & 0xf0000000) >> 28;
2949 Int_t c=(index & 0x0fffffff) >> 00;
2950 return fgLayers[l].GetWeight(c);
2951}
44347160 2952//------------------------------------------------------------------------
a70ed6ad 2953void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2954{
2955 //---------------------------------------------
2956 // register track to the list
628e7bb0 2957 //
b9671574 2958 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2959 //
2960 //
e43c066c 2961 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2962 Int_t index = track->GetClusterIndex(icluster);
2963 Int_t l=(index & 0xf0000000) >> 28;
2964 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2965 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2966 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2967 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2968 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2969 break;
2970 }
2971 }
2972 }
2973}
44347160 2974//------------------------------------------------------------------------
a70ed6ad 2975void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2976{
2977 //---------------------------------------------
2978 // unregister track from the list
2979 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2980 Int_t index = track->GetClusterIndex(icluster);
2981 Int_t l=(index & 0xf0000000) >> 28;
2982 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2983 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2984 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2985 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2986 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2987 }
2988 }
2989 }
2990}
44347160 2991//------------------------------------------------------------------------
00a7cc50 2992Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2993{
2994 //-------------------------------------------------------------
2995 //get number of shared clusters
2996 //-------------------------------------------------------------
2997 Float_t shared=0;
2998 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2999 // mean number of clusters
3000 Float_t *ny = GetNy(id), *nz = GetNz(id);
3001
3002
3003 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
3004 Int_t index = track->GetClusterIndex(icluster);
3005 Int_t l=(index & 0xf0000000) >> 28;
3006 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 3007 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 3008 // if (ny[l]<1.e-13){
3009 // printf("problem\n");
3010 // }
00a7cc50 3011 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3012 Float_t weight=1;
3013 //
3014 Float_t deltan = 0;
3015 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3016 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3017 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3018 if (l<2 || l>3){
3019 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3020 }
3021 else{
3022 deltan = (cl->GetNz()-nz[l]);
3023 }
3024 if (deltan>2.0) continue; // extended - highly probable shared cluster
3025 weight = 2./TMath::Max(3.+deltan,2.);
3026 //
3027 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 3028 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 3029 list[l]=index;
00a7cc50 3030 clist[l] = (AliITSRecPoint*)GetCluster(index);
25015f7a 3031 track->SetSharedWeight(l,weight);
e43c066c 3032 shared+=weight;
3033 break;
3034 }
3035 }
3036 }
b9671574 3037 track->SetNUsed(shared);
e43c066c 3038 return shared;
3039}
44347160 3040//------------------------------------------------------------------------
a70ed6ad 3041Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 3042{
3043 //
3044 // find first shared track
3045 //
3046 // mean number of clusters
3047 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
3048 //
3049 for (Int_t i=0;i<6;i++) overlist[i]=-1;
3050 Int_t sharedtrack=100000;
3051 Int_t tracks[24],trackindex=0;
3052 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
3053 //
3054 for (Int_t icluster=0;icluster<6;icluster++){
3055 if (clusterlist[icluster]<0) continue;
3056 Int_t index = clusterlist[icluster];
3057 Int_t l=(index & 0xf0000000) >> 28;
3058 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 3059 // if (ny[l]<1.e-13){
3060 // printf("problem\n");
3061 // }
b9671574 3062 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 3063 //if (l>3) continue;
00a7cc50 3064 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3065 //
3066 Float_t deltan = 0;
3067 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3068 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3069 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3070 if (l<2 || l>3){
3071 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3072 }
3073 else{
3074 deltan = (cl->GetNz()-nz[l]);
3075 }
3076 if (deltan>2.0) continue; // extended - highly probable shared cluster
3077 //
3078 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3079 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3080 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
3081 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 3082 trackindex++;
3083 }
3084 }
3085 }
3086 if (trackindex==0) return -1;
3087 if (trackindex==1){
3088 sharedtrack = tracks[0];
3089 }else{
3090 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
3091 else{
3092 //
a5d0fae6 3093 Int_t tracks2[24], cluster[24];
a6173ccd 3094 for (Int_t i=0;i<24;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 3095 Int_t index =0;
3096 //
3097 for (Int_t i=0;i<trackindex;i++){
3098 if (tracks[i]<0) continue;
a5d0fae6 3099 tracks2[index] = tracks[i];
e43c066c 3100 cluster[index]++;
3101 for (Int_t j=i+1;j<trackindex;j++){
3102 if (tracks[j]<0) continue;
3103 if (tracks[j]==tracks[i]){
3104 cluster[index]++;
3105 tracks[j]=-1;
3106 }
3107 }
3108 index++;
3109 }
3110 Int_t max=0;
3111 for (Int_t i=0;i<index;i++){
3112 if (cluster[index]>max) {
a5d0fae6 3113 sharedtrack=tracks2[index];
e43c066c 3114 max=cluster[index];
3115 }
3116 }
3117 }
3118 }
3119
3120 if (sharedtrack>=100000) return -1;
3121 //
3122 // make list of overlaps
3123 shared =0;
3124 for (Int_t icluster=0;icluster<6;icluster++){
3125 if (clusterlist[icluster]<0) continue;
3126 Int_t index = clusterlist[icluster];
3127 Int_t l=(index & 0xf0000000) >> 28;
3128 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 3129 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 3130 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3131 if (l==0 || l==1){
3132 if (cl->GetNy()>2) continue;
3133 if (cl->GetNz()>2) continue;
3134 }
3135 if (l==4 || l==5){
3136 if (cl->GetNy()>3) continue;
3137 if (cl->GetNz()>3) continue;
3138 }
3139 //
3140 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3141 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3142 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 3143 overlist[l]=index;
3144 shared++;
3145 }
3146 }
3147 }
3148 return sharedtrack;
3149}
44347160 3150//------------------------------------------------------------------------
04315dad 3151AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1,AliITStrackMI* original){
e43c066c 3152 //
3153 // try to find track hypothesys without conflicts
3154 // with minimal chi2;
3155 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
3156 Int_t entries1 = arr1->GetEntriesFast();
3157 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 3158 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3159 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 3160 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3161 //
15dd636f 3162 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
3163 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 3164 if (track10->Pt()>0.5+track20->Pt()) return track10;
a4354152 3165 //
e43c066c 3166 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3167 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3168 UnRegisterClusterTracks(track,trackID1);
3169 }
3170 //
3171 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3172 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3173 UnRegisterClusterTracks(track,trackID2);
3174 }
3175 Int_t index1=0;
3176 Int_t index2=0;
3177 Float_t maxconflicts=6;
3178 Double_t maxchi2 =1000.;
3179 //
3180 // get weight of hypothesys - using best hypothesy
3181 Double_t w1,w2;
3182
3183 Int_t list1[6],list2[6];
00a7cc50 3184 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 3185 RegisterClusterTracks(track10,trackID1);
3186 RegisterClusterTracks(track20,trackID2);
3187 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
3188 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
3189 UnRegisterClusterTracks(track10,trackID1);
3190 UnRegisterClusterTracks(track20,trackID2);
3191 //
3192 // normalized chi2
3193 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
3194 Float_t nerry[6],nerrz[6];
3195 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
3196 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
3197 for (Int_t i=0;i<6;i++){
3198 if ( (erry1[i]>0) && (erry2[i]>0)) {
3199 nerry[i] = TMath::Min(erry1[i],erry2[i]);
3200 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
3201 }else{
3202 nerry[i] = TMath::Max(erry1[i],erry2[i]);
3203 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
3204 }
b9671574 3205 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
3206 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
3207 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3208 ncl1++;
3209 }
b9671574 3210 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
3211 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
3212 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3213 ncl2++;
3214 }
3215 }
3216 chi21/=ncl1;
3217 chi22/=ncl2;
3218 //
3219 //
b9671574 3220 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
3221 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 3222 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3223 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3224 //
3225 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3226 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 3227 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3228 );
3229 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3230 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 3231 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3232 );
3233
3234 Double_t sumw = w1+w2;
3235 w1/=sumw;
3236 w2/=sumw;
3237 if (w1<w2*0.5) {
3238 w1 = (d2+0.5)/(d1+d2+1.);
3239 w2 = (d1+0.5)/(d1+d2+1.);
3240 }
3241 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3242 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3243 //
3244 // get pair of "best" hypothesys
3245 //
3246 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3247 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3248
3249 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3250 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3251 //if (track1->fFakeRatio>0) continue;
3252 RegisterClusterTracks(track1,trackID1);
3253 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3254 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3255
3256 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3257 //if (track2->fFakeRatio>0) continue;
3258 Float_t nskipped=0;
3259 RegisterClusterTracks(track2,trackID2);
e43c066c 3260 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3261 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3262 UnRegisterClusterTracks(track2,trackID2);
3263 //
b9671574 3264 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3265 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3266 if (nskipped>0.5) continue;
3267 //
3268 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3269 if (conflict1+1<cconflict1) continue;
3270 if (conflict2+1<cconflict2) continue;
3271 Float_t conflict=0;
3272 Float_t sumchi2=0;
3273 Float_t sum=0;
3274 for (Int_t i=0;i<6;i++){
3275 //
3276 Float_t c1 =0.; // conflict coeficients
3277 Float_t c2 =0.;
3278 if (clist1[i]&&clist2[i]){
3279 Float_t deltan = 0;
3280 if (i<2 || i>3){
3281 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3282 }
3283 else{
3284 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3285 }
3286 c1 = 2./TMath::Max(3.+deltan,2.);
3287 c2 = 2./TMath::Max(3.+deltan,2.);
3288 }
3289 else{
3290 if (clist1[i]){
3291 Float_t deltan = 0;
3292 if (i<2 || i>3){
3293 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3294 }
3295 else{
3296 deltan = (clist1[i]->GetNz()-nz1[i]);
3297 }
3298 c1 = 2./TMath::Max(3.+deltan,2.);
3299 c2 = 0;
3300 }
3301
3302 if (clist2[i]){
3303 Float_t deltan = 0;
3304 if (i<2 || i>3){
3305 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3306 }
3307 else{
3308 deltan = (clist2[i]->GetNz()-nz2[i]);
3309 }
3310 c2 = 2./TMath::Max(3.+deltan,2.);
3311 c1 = 0;
3312 }
3313 }
3314 //
a5d0fae6 3315 chi21=0;chi22=0;
b9671574 3316 if (TMath::Abs(track1->GetDy(i))>0.) {
3317 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3318 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3319 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3320 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3321 }else{
b9671574 3322 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3323 }
3324 //
b9671574 3325 if (TMath::Abs(track2->GetDy(i))>0.) {
3326 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3327 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3328 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3329 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3330 }
3331 else{
b9671574 3332 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3333 }
3334 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3335 if (chi21>0) sum+=w1;
3336 if (chi22>0) sum+=w2;
3337 conflict+=(c1+c2);
3338 }
b9671574 3339 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3340 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3341 Double_t normchi2 = 2*conflict+sumchi2/sum;
3342 if ( normchi2 <maxchi2 ){
3343 index1 = itrack1;
3344 index2 = itrack2;
3345 maxconflicts = conflict;
3346 maxchi2 = normchi2;
3347 }
3348 }
3349 UnRegisterClusterTracks(track1,trackID1);
3350 }
3351 //
3352 // if (maxconflicts<4 && maxchi2<th0){
3353 if (maxchi2<th0*2.){
b9671574 3354 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3355 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3356 track1->SetChi2MIP(5,maxconflicts);
3357 track1->SetChi2MIP(6,maxchi2);
3358 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3359 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3360 track1->SetChi2MIP(8,index1);
e43c066c 3361 fBestTrackIndex[trackID1] =index1;
3362 UpdateESDtrack(track1, AliESDtrack::kITSin);
04315dad 3363 original->SetWinner(track1);
e43c066c 3364 }
b9671574 3365 else if (track10->GetChi2MIP(0)<th1){
3366 track10->SetChi2MIP(5,maxconflicts);
3367 track10->SetChi2MIP(6,maxchi2);
e43c066c 3368 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3369 UpdateESDtrack(track10,AliESDtrack::kITSin);
04315dad 3370 original->SetWinner(track10);
e43c066c 3371 }
3372
3373 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3374 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3375 UnRegisterClusterTracks(track,trackID1);
3376 }
3377 //
3378 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3379 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3380 UnRegisterClusterTracks(track,trackID2);
3381 }
3382
44347160 3383 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3384 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3385 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3386 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3387 RegisterClusterTracks(track10,trackID1);
3388 }
44347160 3389 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3390 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3391 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3392 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3393 RegisterClusterTracks(track20,trackID2);
3394 }
04315dad 3395 return track10;
e43c066c 3396
3397}
44347160 3398//------------------------------------------------------------------------
e43c066c 3399void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3400 //--------------------------------------------------------------------
3401 // This function marks clusters assigned to the track
3402 //--------------------------------------------------------------------
3403 AliTracker::UseClusters(t,from);
3404
00a7cc50 3405 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3406 //if (c->GetQ()>2) c->Use();
3407 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3408 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3409 //if (c->GetQ()>2) c->Use();
3410 if (c->GetSigmaZ2()>0.1) c->Use();
3411
3412}
44347160 3413//------------------------------------------------------------------------
15dd636f 3414void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3415{
3416 //------------------------------------------------------------------
3417 // add track to the list of hypothesys
3418 //------------------------------------------------------------------
3419
e43c066c 3420 //
3421 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3422 if (!array) {
3423 array = new TObjArray(10);
7034b8af 3424 fTrackHypothesys.AddAtAndExpand(array,esdindex);
e43c066c 3425 }
3426 array->AddLast(track);
3427}
44347160 3428//------------------------------------------------------------------------
e43c066c 3429void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3430{
3431 //-------------------------------------------------------------------
3432 // compress array of track hypothesys
3433 // keep only maxsize best hypothesys
3434 //-------------------------------------------------------------------
3435 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3436 if (! (fTrackHypothesys.At(esdindex)) ) return;
3437 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3438 Int_t entries = array->GetEntriesFast();
3439 //
3440 //- find preliminary besttrack as a reference
04315dad 3441 Float_t minchi2=10000;
e43c066c 3442 Int_t maxn=0;
15dd636f 3443 AliITStrackMI * besttrack=0;
a4354152 3444 //
e43c066c 3445 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3446 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3447 if (!track) continue;
3448 Float_t chi2 = NormalizedChi2(track,0);
3449 //
b9671574 3450 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3451 track->SetLabel(tpcLabel);
3452 CookdEdx(track);
b9671574 3453 track->SetFakeRatio(1.);
e43c066c 3454 CookLabel(track,0.); //For comparison only
3455 //
44347160 3456 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3457 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3458 if (track->GetNumberOfClusters()<maxn) continue;
3459 maxn = track->GetNumberOfClusters();
a4354152 3460 // if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2 *= track->GetChi2MIP(3); // RS
e43c066c 3461 if (chi2<minchi2){
3462 minchi2=chi2;
3463 besttrack=track;
3464 }
3465 }
3466 else{
b9671574 3467 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3468 delete array->RemoveAt(itrack);
3469 }
e43c066c 3470 }
3471 }
3472 if (!besttrack) return;
3473 //
3474 //
3475 //take errors of best track as a reference
3476 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3477 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3478 for (Int_t j=0;j<6;j++) {
9fd412a8 3479 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3480 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3481 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3482 ny[j] = besttrack->GetNy(j);
3483 nz[j] = besttrack->GetNz(j);
e43c066c 3484 }
3485 }
3486 //
3487 // calculate normalized chi2
3488 //
3489 Float_t * chi2 = new Float_t[entries];
3490 Int_t * index = new Int_t[entries];
04315dad 3491 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3492 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3493 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3494 if (track){
a4354152 3495 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3496 double chi2t = GetNormalizedChi2(track, mode);
3497 track->SetChi2MIP(0,chi2t);
3498 if (chi2t<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3499 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3500 chi2[itrack] = chi2t;
3501 }
628e7bb0 3502 else{
b9671574 3503 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3504 delete array->RemoveAt(itrack);
3505 }
3506 }
e43c066c 3507 }
3508 }
3509 //
3510 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3511 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3512 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3513 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3514 for (Int_t j=0;j<6;j++){
9fd412a8 3515 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3516 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3517 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3518 ny[j] = besttrack->GetNy(j);
3519 nz[j] = besttrack->GetNz(j);
e43c066c 3520 }
3521 }
3522 }
3523 //
3524 // calculate one more time with updated normalized errors
04315dad 3525 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3526 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3527 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3528 if (track){
a4354152 3529 double chi2t = GetNormalizedChi2(track, mode);
3530 track->SetChi2MIP(0,chi2t);
bf1cd124 3531 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
a4354152 3532 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3533 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3534 chi2[itrack] = chi2t; //-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3535 }
3536 else {
3537 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3538 delete array->RemoveAt(itrack);
628e7bb0 3539 }
a4354152 3540 }
e43c066c 3541 }
3542 }
3543 entries = array->GetEntriesFast();
3544 //
628e7bb0 3545 //
e43c066c 3546 if (entries>0){
3547 TObjArray * newarray = new TObjArray();
3548 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3549 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3550 if (besttrack){
bf1cd124 3551 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3552 //
a5d0fae6 3553 for (Int_t j=0;j<6;j++){
3554 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3555 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3556 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3557 ny[j] = besttrack->GetNy(j);
3558 nz[j] = besttrack->GetNz(j);
e43c066c 3559 }
3560 }
b9671574 3561 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3562 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3563 Float_t minn = besttrack->GetNumberOfClusters()-3;
3564 Int_t accepted=0;
3565 for (Int_t i=0;i<entries;i++){
15dd636f 3566 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3567 if (!track) continue;
3568 if (accepted>maxcut) break;
b9671574 3569 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3570 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3571 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3572 delete array->RemoveAt(index[i]);
3573 continue;
3574 }
e43c066c 3575 }
b9671574 3576 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3577 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3578 if (!shortbest) accepted++;
e43c066c 3579 //
3580 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3581 for (Int_t j=0;j<6;j++){
3582 if (nz[j]==0){
3583 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3584 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3585 ny[j] = track->GetNy(j);
3586 nz[j] = track->GetNz(j);
e43c066c 3587 }
3588 }
3589 }
3590 else{
3591 delete array->RemoveAt(index[i]);
3592 }
3593 }
3594 array->Delete();
3595 delete fTrackHypothesys.RemoveAt(esdindex);
3596 fTrackHypothesys.AddAt(newarray,esdindex);
3597 }
3598 else{
3599 array->Delete();
3600 delete fTrackHypothesys.RemoveAt(esdindex);
3601 }
3602 }
3603 delete [] chi2;
3604 delete [] index;
3605}
44347160 3606//------------------------------------------------------------------------
15dd636f 3607AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3608{
3609 //-------------------------------------------------------------
3610 // try to find best hypothesy
3611 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
a4354152 3612 // RS: optionally changing this to product of Chi2MIP(0)*Chi2MIP(3) == (chi2*chi2_interpolated)
e43c066c 3613 //-------------------------------------------------------------
3614 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3615 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3616 if (!array) return 0;
3617 Int_t entries = array->GetEntriesFast();
3618 if (!entries) return 0;
04315dad 3619 Float_t minchi2 = 100000;
15dd636f 3620 AliITStrackMI * besttrack=0;
e43c066c 3621 //
15dd636f 3622 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3623 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3624 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3625 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3626 //
3627 for (Int_t i=0;i<entries;i++){
15dd636f 3628 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3629 if (!track) continue;
628e7bb0 3630 Float_t sigmarfi,sigmaz;
3631 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3632 track->SetDnorm(0,sigmarfi);
3633 track->SetDnorm(1,sigmaz);
628e7bb0 3634 //
b9671574 3635 track->SetChi2MIP(1,1000000);
3636 track->SetChi2MIP(2,1000000);
3637 track->SetChi2MIP(3,1000000);
e43c066c 3638 //
3639 // backtrack
15dd636f 3640 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3641 if (track->GetConstrain()) {
e50912db 3642 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
333d86cb 3643 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
a4354152 3644 if (fUseImproveKalman) {if (!backtrack->ImproveKalman(xyzVtx,ersVtx,0,0,0)) continue;}
3645 else {if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;}
333d86cb 3646 }
6c94f330 3647 backtrack->ResetCovariance(10.);
628e7bb0 3648 }else{
6c94f330 3649 backtrack->ResetCovariance(10.);
628e7bb0 3650 }
e43c066c 3651 backtrack->ResetClusters();
628e7bb0 3652
e43c066c 3653 Double_t x = original->GetX();
3654 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3655 //
b9671574 3656 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3657 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3658 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3659 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3660
b9671574 3661 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3662 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3663 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3664
3665
44347160 3666 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3667 //
3668 //forward track - without constraint
15dd636f 3669 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3670 forwardtrack->ResetClusters();
3671 x = track->GetX();
a4354152 3672 if (!RefitAt(x,forwardtrack,track) && fSelectBestMIP03) continue; // w/o fwd track MIP03 is meaningless
b9671574 3673 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3674 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3675 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3676
791f9a2a 3677 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3678 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3679 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3680 forwardtrack->SetD(0,track->GetD(0));
3681 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3682 {
3683 Int_t list[6];
00a7cc50 3684 AliITSRecPoint* clist[6];
b9671574 3685 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3686 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3687 }
3688
b9671574 3689 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3690 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3691 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3692 track->SetChi2MIP(3,1000);
e43c066c 3693 continue;
3694 }
a4354152 3695 Double_t chi2 = track->GetChi2MIP(0); // +track->GetNUsed(); //RS
3696 if (fSelectBestMIP03) chi2 *= track->GetChi2MIP(3);
04315dad 3697 else chi2 += track->GetNUsed();
e43c066c 3698 //
3699 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3700 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3701 }
3702 if (chi2 < minchi2){
15dd636f 3703 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3704 besttrack = track;
e43c066c 3705 besttrack->SetLabel(track->GetLabel());
b9671574 3706 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3707 minchi2 = chi2;
791f9a2a 3708 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3709 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3710 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3711 }
3712 }
3713 delete backtrack;
3714 delete forwardtrack;
9cd19c63 3715
3716 if (!besttrack) return 0;
3717
e43c066c 3718 Int_t accepted=0;
3719 for (Int_t i=0;i<entries;i++){
fddf8459 3720 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3721
e43c066c 3722 if (!track) continue;
628e7bb0 3723
44347160 3724 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
a4354152 3725 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)
3726 // RS: don't apply this cut when fSelectBestMIP03 is on
3727 || (!fSelectBestMIP03 && (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.))
3728 ){
b9671574 3729 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3730 delete array->RemoveAt(i);
3731 continue;
3732 }
e43c066c 3733 }
3734 else{
3735 accepted++;
3736 }
3737 }
3738 //
3739 array->Compress();
3740 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3741
e43c066c 3742 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3743 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3744 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3745 if (!besttrack) return 0;
b9671574 3746 besttrack->SetChi2MIP(8,0);
e43c066c 3747 fBestTrackIndex[esdindex]=0;
3748 entries = array->GetEntriesFast();
15dd636f 3749 AliITStrackMI *longtrack =0;
e43c066c 3750 minchi2 =1000;
b9671574 3751 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3752 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3753 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3754 if (!track->GetConstrain()) continue;
3755 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3756 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3757 if (track->GetChi2MIP(0)>4.) continue;
3758 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3759 longtrack =track;
3760 }
3761 //if (longtrack) besttrack=longtrack;
a4354152 3762 //
3763 // RS do shared cluster analysis here only if the new sharing analysis is not requested
04315dad 3764 //RRR if (fFlagFakes) return besttrack;
e43c066c 3765
3766 Int_t list[6];
00a7cc50 3767 AliITSRecPoint * clist[6];
e43c066c 3768 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3769 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3770 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3771 RegisterClusterTracks(besttrack,esdindex);
3772 }
3773 //
3774 //
3775 if (shared>0.0){
3776 Int_t nshared;
3777 Int_t overlist[6];
3778 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3779 if (sharedtrack>=0){
3780 //
04315dad 3781 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5,original);
e43c066c 3782 if (besttrack){
3783 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3784 }
3785 else return 0;
3786 }
3787 }
3788
3789 if (shared>2.5) return 0;
3790 if (shared>1.0) return besttrack;
3791 //
628e7bb0 3792 // Don't sign clusters if not gold track
3793 //
3794 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3795 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3796 //
e43c066c 3797 if (fConstraint[fPass]){
3798 //
3799 // sign clusters
3800 //
3801 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3802 for (Int_t i=0;i<6;i++){
b9671574 3803 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3804 if (index<0) continue;
e43c066c 3805 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3806 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3807 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3808 if (!c) continue;
3809 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3810 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3811 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3812 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3813 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3814 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3815
3816 Bool_t cansign = kTRUE;
3817 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3818 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3819 if (!track) continue;
b9671574 3820 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3821 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3822 cansign = kFALSE;
3823 break;
3824 }
3825 }
3826 if (cansign){
b9671574 3827 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3828 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3829 if (!c->IsUsed()) c->Use();
3830 }
3831 }
3832 }
3833 return besttrack;
3834}
44347160 3835//------------------------------------------------------------------------
e43c066c 3836void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3837{
3838 //
3839 // get "best" hypothesys
628e7bb0 3840 //
e43c066c 3841
3842 Int_t nentries = itsTracks.GetEntriesFast();
3843 for (Int_t i=0;i<nentries;i++){
15dd636f 3844 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3845 if (!track) continue;
3846 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3847 if (!array) continue;
3848 if (array->GetEntriesFast()<=0) continue;
3849 //
15dd636f 3850 AliITStrackMI* longtrack=0;
e43c066c 3851 Float_t minn=0;
04315dad 3852 Float_t maxchi2=1000;
e43c066c 3853 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3854 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3855 if (!trackHyp) continue;
3856 if (trackHyp->GetGoldV0()) {
3857 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3858 break;
3859 }
a5d0fae6 3860 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3861 Float_t chi2 = trackHyp->GetChi2MIP(0);
a4354152 3862 if (fSelectBestMIP03) chi2 *= trackHyp->GetChi2MIP(3);
3863 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = chi2; //trackHyp->GetChi2MIP(0);
3864 //
3865 if (fAfterV0){ // ??? RS
a5d0fae6 3866 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3867 }
628e7bb0 3868 if (chi2 > maxchi2) continue;
a4354152 3869 minn = trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3870 if (fSelectBestMIP03) minn++; // allow next to longest to win
628e7bb0 3871 maxchi2 = chi2;
a5d0fae6 3872 longtrack=trackHyp;
e43c066c 3873 }
628e7bb0 3874 //
3875 //
3876 //
15dd636f 3877 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3878 if (!longtrack) {longtrack = besttrack;}
3879 else besttrack= longtrack;
628e7bb0 3880 //
afd25725 3881 if (besttrack) {
04315dad 3882 Int_t list[6];
3883 AliITSRecPoint * clist[6];
3884 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3885 //
3886 track->SetNUsed(shared);
b9671574 3887 track->SetNSkipped(besttrack->GetNSkipped());
3888 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
04315dad 3889 if (shared>0) {
3890 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3891 Int_t nshared;
3892 Int_t overlist[6];
e43c066c 3893 //
04315dad 3894 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3895 //if (sharedtrack==-1) sharedtrack=0;
3896 if (sharedtrack>=0) {
3897 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5,track);
3898 }
3899 }
3900 if (besttrack&&fAfterV0) {
628e7bb0 3901 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 3902 track->SetWinner(besttrack);
628e7bb0 3903 }
04315dad 3904 if (besttrack) {
3905 if (fConstraint[fPass]) {
3906 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3907 track->SetWinner(besttrack);
3908 }
3909 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
9cd19c63 3910 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3911 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3912 }
04315dad 3913 }
a4354152 3914 }
e43c066c 3915 }
3916}
a4354152 3917
3918//------------------------------------------------------------------------
a878a855 3919void AliITStrackerMI::FlagFakes(const TObjArray &itsTracks)
a4354152 3920{
3921 //
3922 // RS: flag those tracks which are suxpected to have fake clusters
3923 //
3924 const double kThreshPt = 0.5;
3925 AliRefArray *refArr[6];
3926 //
3927 for (int i=0;i<6;i++) {
3928 int ncl = fgLayers[i].GetNumberOfClusters();
3929 refArr[i] = new AliRefArray(ncl,TMath::Min(ncl,1000));
3930 }
3931 Int_t nentries = itsTracks.GetEntriesFast();
3932 //
3933 // fill cluster->track associations
3934 for (Int_t itr=0;itr<nentries;itr++){
3935 AliITStrackMI* track = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3936 if (!track) continue;
3937 AliITStrackMI* trackITS = track->GetWinner();
3938 if (!trackITS) continue;
3939 for (int il=trackITS->GetNumberOfClusters();il--;) {
3940 int idx = trackITS->GetClusterIndex(il);
3941 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3942 // if (c>fgLayers[l].GetNumberOfClusters()) continue;
3943 refArr[l]->AddReference(c, itr);
3944 }
3945 }
3946 //
3947 const UInt_t kMaxRef = 100;
3948 UInt_t crefs[kMaxRef];
3949 Int_t ncrefs=0;
3950 // process tracks with shared clusters
3951 for (int itr=0;itr<nentries;itr++){
3952 AliITStrackMI* track0 = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3953 AliITStrackMI* trackH0 = track0->GetWinner();
3954 if (!trackH0) continue;
3955 AliESDtrack* esd0 = track0->GetESDtrack();
3956 //
3957 for (int il=0;il<trackH0->GetNumberOfClusters();il++) {
3958 int idx = trackH0->GetClusterIndex(il);
3959 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3960 ncrefs = refArr[l]->GetReferences(c,crefs,kMaxRef);
3961 if (ncrefs<2) continue; // there will be always self-reference, for sharing needs at least 2
3962 esd0->SetITSSharedFlag(l);
3963 for (int ir=ncrefs;ir--;) {
3964 if (int(crefs[ir]) <= itr) continue; // ==:selfreference, <: the same pair will be checked with >
3965 AliITStrackMI* track1 = (AliITStrackMI*)itsTracks.UncheckedAt(crefs[ir]);
3966 AliITStrackMI* trackH1 = track1->GetWinner();
3967 AliESDtrack* esd1 = track1->GetESDtrack();
3968 esd1->SetITSSharedFlag(l);
3969 //
3970 double pt0 = trackH0->Pt(), pt1 = trackH1->Pt(), res = 0.;
3971 if (pt0>kThreshPt && pt0-pt1>0.2+0.2*(pt0-kThreshPt) ) res = -100;
3972 else if (pt1>kThreshPt && pt1-pt0>0.2+0.2*(pt1-kThreshPt) ) res = 100;
3973
3974 // select the one with smallest chi2's product
3975 res += trackH0->GetChi2MIP(0)*trackH0->GetChi2MIP(3);
3976 res -= trackH1->GetChi2MIP(0)*trackH1->GetChi2MIP(3);
3977 //
3978 if (res<0) esd1->SetITSFakeFlag(); // esd0 is winner
3979 else esd0->SetITSFakeFlag(); // esd1 is winner
3980 }
3981 //
3982 }
3983 //
3984 }
3985 //
3986 for (int i=6;i--;) delete refArr[i];
3987}
3988
44347160 3989//------------------------------------------------------------------------
15dd636f 3990void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3991 //--------------------------------------------------------------------
3992 //This function "cooks" a track label. If label<0, this track is fake.
3993 //--------------------------------------------------------------------
3994 Int_t tpcLabel=-1;
3995
d3dbf323 3996 if (track->GetESDtrack()){
3997 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3998 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3999 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
4000 }
b9671574 4001 track->SetChi2MIP(9,0);
e43c066c 4002 Int_t nwrong=0;
4003 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4004 Int_t cindex = track->GetClusterIndex(i);
4005 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 4006 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 4007 Int_t isWrong=1;
4008 for (Int_t ind=0;ind<3;ind++){
84a21804 4009 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 4010 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 4011 }
b9671574 4012 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4013 nwrong+=isWrong;
4014 }
7d43b4c4 4015 Int_t nclusters = track->GetNumberOfClusters();
4016 if (nclusters > 0) //PH Some tracks don't have any cluster
4017 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 4018 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
4019 track->SetLabel(-tpcLabel);
4020 } else {
4021 track->SetLabel(tpcLabel);
e43c066c 4022 }
9be1d1c7 4023 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 4024
4025}
44347160 4026//------------------------------------------------------------------------
88e3c173 4027void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
4028 //
4029 // Fill the dE/dx in this track
e43c066c 4030 //
b9671574 4031 track->SetChi2MIP(9,0);
e43c066c 4032 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4033 Int_t cindex = track->GetClusterIndex(i);
4034 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 4035 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 4036 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 4037 Int_t isWrong=1;
4038 for (Int_t ind=0;ind<3;ind++){
4039 if (cl->GetLabel(ind)==lab) isWrong=0;
4040 }
b9671574 4041 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4042 }
e43c066c 4043 Double_t low=0.;
4044 Double_t up=0.51;
09cf9d66 4045 track->CookdEdx(low,up);
e43c066c 4046}
44347160 4047//------------------------------------------------------------------------
e50912db 4048void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 4049 //
a70ed6ad 4050 // Create some arrays
e43c066c 4051 //
afd25725 4052 if (fCoefficients) delete []fCoefficients;
4053 fCoefficients = new Float_t[ntracks*48];
4054 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 4055}
44347160 4056//------------------------------------------------------------------------
00a7cc50 4057Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 4058{
4059 //
a70ed6ad 4060 // Compute predicted chi2
e43c066c 4061 //
242bd643 4062 // Take into account the mis-alignment (bring track to cluster plane)
4063 Double_t xTrOrig=track->GetX();
4064 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
d9ead1a0 4065 Float_t erry,errz,covyz;
e43c066c 4066 Float_t theta = track->GetTgl();
4067 Float_t phi = track->GetSnp();
242bd643 4068 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 4069 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 4070 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
4187a601 4071 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
d9ead1a0 4072 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 4073 // Bring the track back to detector plane in ideal geometry
4074 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 4075 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 4076 Float_t ny,nz;
e50912db 4077 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 4078 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
4079 if (delta>1){
4080 chi2+=0.5*TMath::Min(delta/2,2.);
4081 chi2+=2.*cluster->GetDeltaProbability();
4082 }
4083 //
b9671574 4084 track->SetNy(layer,ny);
4085 track->SetNz(layer,nz);
4086 track->SetSigmaY(layer,erry);
4087 track->SetSigmaZ(layer, errz);
d9ead1a0 4088 track->SetSigmaYZ(layer,covyz);
e43c066c 4089 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 4090 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 4091 return chi2;
4092
4093}
e50912db 4094//------------------------------------------------------------------------
4095Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 4096{
4097 //
a70ed6ad 4098 // Update ITS track
e43c066c 4099 //
4100 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 4101 track->SetClIndex(layer, index);
572f41f9 4102 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
4103 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
4104 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
4105 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
4106 }
e43c066c 4107 }
a504d56f 4108
88e3c173 4109 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 4110
afd25725 4111
1c97ce2f 4112 // Take into account the mis-alignment (bring track to cluster plane)
4113 Double_t xTrOrig=track->GetX();
4187a601 4114 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
4115 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
4116 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
4117 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 4118
9be1d1c7 4119 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 4120
150f264c 4121 AliCluster c(*cl);
4122 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
4123 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 4124 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 4125
1c97ce2f 4126
4127 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 4128 // Bring the track back to detector plane in ideal geometry
9be1d1c7 4129 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 4130
4187a601 4131 if(!updated) AliDebug(2,"update failed");
1c97ce2f 4132 return updated;
e43c066c 4133}
150f264c 4134
44347160 4135//------------------------------------------------------------------------
a70ed6ad 4136void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 4137{
4138 //
4139 //DCA sigmas parameterization
4140 //to be paramterized using external parameters in future
4141 //
4142 //
63126a46 4143 Double_t curv=track->GetC();
4144 sigmarfi = 0.0040+1.4 *TMath::Abs(curv)+332.*curv*curv;
4145 sigmaz = 0.0110+4.37*TMath::Abs(curv);
628e7bb0 4146}
e50912db 4147//------------------------------------------------------------------------
a70ed6ad 4148void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 4149{
4150 //
a70ed6ad 4151 // Clusters from delta electrons?
e43c066c 4152 //
a70ed6ad 4153 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 4154 if (entries<4) return;
a70ed6ad 4155 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 4156 Int_t layer = cluster->GetLayer();
4157 if (layer>1) return;
4158 Int_t index[10000];
4159 Int_t ncandidates=0;
4160 Float_t r = (layer>0)? 7:4;
4161 //
4162 for (Int_t i=0;i<entries;i++){
a70ed6ad 4163 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 4164 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
4165 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
4166 index[ncandidates] = i; //candidate to belong to delta electron track
4167 ncandidates++;
4168 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
4169 cl0->SetDeltaProbability(1);
4170 }
4171 }
4172 //
4173 //
4174 //
4175 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 4176 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 4177 if (cl0->GetDeltaProbability()>0.8) continue;
4178 //
4179 Int_t ncl = 0;
4180 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
4181 sumy=sumz=sumy2=sumyz=sumw=0.0;
4182 for (Int_t j=0;j<ncandidates;j++){
4183 if (i==j) continue;
a70ed6ad 4184 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 4185 //
4186 Float_t dz = cl0->GetZ()-cl1->GetZ();
4187 Float_t dy = cl0->GetY()-cl1->GetY();
4188 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
4189 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
4190 y[ncl] = cl1->GetY();
4191 z[ncl] = cl1->GetZ();
4192 sumy+= y[ncl]*weight;
4193 sumz+= z[ncl]*weight;
4194 sumy2+=y[ncl]*y[ncl]*weight;
4195 sumyz+=y[ncl]*z[ncl]*weight;
4196 sumw+=weight;
4197 ncl++;
4198 }
4199 }
4200 if (ncl<4) continue;
4201 Float_t det = sumw*sumy2 - sumy*sumy;
4202 Float_t delta=1000;
4203 if (TMath::Abs(det)>0.01){
4204 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
4205 Float_t k = (sumyz*sumw - sumy*sumz)/det;
4206 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
4207 }
4208 else{
4209 Float_t z0 = sumyz/sumy;
4210 delta = TMath::Abs(cl0->GetZ()-z0);
4211 }
4212 if ( delta<0.05) {
4213 cl0->SetDeltaProbability(1-20.*delta);
4214 }
4215 }
4216}
44347160 4217//------------------------------------------------------------------------
15dd636f 4218void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 4219{
4220 //
a70ed6ad 4221 // Update ESD track
e43c066c 4222 //
4223 track->UpdateESDtrack(flags);
b9671574 4224 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
ddfbc51a 4225 if (oldtrack) delete oldtrack;
4226 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
4227 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
4228 // printf("Problem\n");
4229 // }
e43c066c 4230}
44347160 4231//------------------------------------------------------------------------
81e97e0d 4232Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
4233 //
ae00569a 4234 // Get nearest upper layer close to the point xr.
81e97e0d 4235 // rough approximation
4236 //
bf6adc12 4237 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 4238 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
4239 Int_t res =6;
4240 for (Int_t i=0;i<6;i++){
bf6adc12 4241 if (radius<kRadiuses[i]){
81e97e0d 4242 res =i;
4243 break;
4244 }
4245 }
4246 return res;
4247}
44347160 4248//------------------------------------------------------------------------
e50912db 4249void AliITStrackerMI::BuildMaterialLUT(TString material) {
4250 //--------------------------------------------------------------------
4251 // Fill a look-up table with mean material
4252 //--------------------------------------------------------------------
4253
4254 Int_t n=1000;
4255 Double_t mparam[7];
4256 Double_t point1[3],point2[3];
4257 Double_t phi,cosphi,sinphi,z;
4258 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 4259 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
4260 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 4261
4262 Int_t ifirst=0,ilast=0;
4263 if(material.Contains("Pipe")) {
4264 ifirst=6; ilast=6;
4265 } else if(material.Contains("Shields")) {
4266 ifirst=7; ilast=8;
4267 } else if(material.Contains("Layers")) {
4268 ifirst=0; ilast=5;
4269 } else {
4270 Error("BuildMaterialLUT","Wrong layer name\n");
4271 }
4272
4273 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4274 Double_t param[5]={0.,0.,0.,0.,0.};
4275 for (Int_t i=0; i<n; i++) {
4276 phi = 2.*TMath::Pi()*gRandom->Rndm();
4277 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4278 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4279 point1[0] = rmin[imat]*cosphi;
4280 point1[1] = rmin[imat]*sinphi;
4281 point1[2] = z;
4282 point2[0] = rmax[imat]*cosphi;
4283 point2[1] = rmax[imat]*sinphi;
4284 point2[2] = z;
4285 AliTracker::MeanMaterialBudget(point1,point2,mparam);
4286 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4287 }
4288 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4289 if(imat<=5) {
4290 fxOverX0Layer[imat] = param[1];
4291 fxTimesRhoLayer[imat] = param[0]*param[4];
4292 } else if(imat==6) {
4293 fxOverX0Pipe = param[1];
4294 fxTimesRhoPipe = param[0]*param[4];
4295 } else if(imat==7) {
4296 fxOverX0Shield[0] = param[1];
4297 fxTimesRhoShield[0] = param[0]*param[4];
4298 } else if(imat==8) {
4299 fxOverX0Shield[1] = param[1];
4300 fxTimesRhoShield[1] = param[0]*param[4];
4301 }
4302 }
4303 /*
4304 printf("%s\n",material.Data());
4305 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4306 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4307 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4308 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4309 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4310 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4311 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4312 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4313 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4314 */
4315 return;
4316}
4317//------------------------------------------------------------------------
4318Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4319 TString direction) {
4320 //-------------------------------------------------------------------
4321 // Propagate beyond beam pipe and correct for material
4322 // (material budget in different ways according to fUseTGeo value)
7131593b 4323 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4324 //-------------------------------------------------------------------
4325
4326 // Define budget mode:
4327 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4328 // 1: material from TGeo in one step (on the fly)
e50912db 4329 // 2: material from lut
9be1d1c7 4330 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4331 Int_t mode;
4332 switch(fUseTGeo) {
4333 case 0:
4334 mode=0;
4335 break;
4336 case 1:
4337 mode=1;
4338 break;
4339 case 2:
4340 mode=2;
4341 break;
4342 case 3:
4343 if(fTrackingPhase.Contains("Clusters2Tracks"))
4344 { mode=3; } else { mode=1; }
4345 break;
4346 case 4:
4347 if(fTrackingPhase.Contains("Clusters2Tracks"))
4348 { mode=3; } else { mode=2; }
4349 break;
4350 default:
4351 mode=0;
4352 break;
4353 }
4354 if(fTrackingPhase.Contains("Default")) mode=0;
4355
4356 Int_t index=fCurrentEsdTrack;
4357
4358 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4359 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4360 Double_t xToGo;
4361 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4362
4363 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4364
4365 switch(mode) {
4366 case 0:
4367 xOverX0 = AliITSRecoParam::GetdPipe();
4368 x0 = AliITSRecoParam::GetX0Be();
4369 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4370 lengthTimesMeanDensity *= dir;
7131593b 4371 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4372 break;
4373 case 1:
4374 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4375 break;
4376 case 2:
4377 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4378 xOverX0 = fxOverX0Pipe;
4379 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4380 lengthTimesMeanDensity *= dir;
7131593b 4381 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4382 break;
4383 case 3:
4384 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4385 if(fxOverX0PipeTrks[index]<0) {
4386 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4387 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4388 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4389 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4390 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4391 return 1;
4392 }
4393 xOverX0 = fxOverX0PipeTrks[index];
4394 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4395 lengthTimesMeanDensity *= dir;
7131593b 4396 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4397 break;
4398 }
4399
e50912db 4400 return 1;
4401}
4402//------------------------------------------------------------------------
4403Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4404 TString shield,
4405 TString direction) {
4406 //-------------------------------------------------------------------
4407 // Propagate beyond SPD or SDD shield and correct for material
4408 // (material budget in different ways according to fUseTGeo value)
7131593b 4409 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4410 //-------------------------------------------------------------------
4411
4412 // Define budget mode:
4413 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4414 // 1: material from TGeo in steps of X cm (on the fly)
4415 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4416 // 2: material from lut
9be1d1c7 4417 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4418 Int_t mode;
4419 switch(fUseTGeo) {
4420 case 0:
4421 mode=0;
4422 break;
4423 case 1:
4424 mode=1;
4425 break;
4426 case 2:
4427 mode=2;
4428 break;
4429 case 3:
4430 if(fTrackingPhase.Contains("Clusters2Tracks"))
4431 { mode=3; } else { mode=1; }
4432 break;
4433 case 4:
4434 if(fTrackingPhase.Contains("Clusters2Tracks"))
4435 { mode=3; } else { mode=2; }
4436 break;
4437 default:
4438 mode=0;
4439 break;
4440 }
4441 if(fTrackingPhase.Contains("Default")) mode=0;
4442
4443 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4444 Double_t rToGo;
4445 Int_t shieldindex=0;
4446 if (shield.Contains("SDD")) { // SDDouter
4447 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4448 shieldindex=1;
4449 } else if (shield.Contains("SPD")) { // SPDouter
4450 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4451 shieldindex=0;
4452 } else {
4453 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4454 return 0;
4455 }
67178f34 4456
4457 // do nothing if we are already beyond the shield
4458 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4459 if(dir<0 && rTrack > rToGo) return 1; // going outward
4460 if(dir>0 && rTrack < rToGo) return 1; // going inward
4461
4462
70e83b26 4463 Double_t xToGo;
4464 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4465
4466 Int_t index=2*fCurrentEsdTrack+shieldindex;
4467
4468 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4469 Int_t nsteps=1;
e50912db 4470
4471 switch(mode) {
4472 case 0:
4473 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4474 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4475 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4476 lengthTimesMeanDensity *= dir;
7131593b 4477 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4478 break;
4479 case 1:
9be1d1c7 4480 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4481 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4482 break;
4483 case 2:
4484 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4485 xOverX0 = fxOverX0Shield[shieldindex];
4486 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4487 lengthTimesMeanDensity *= dir;
7131593b 4488 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4489 break;
4490 case 3:
4491 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4492 if(fxOverX0ShieldTrks[index]<0) {
4493 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4494 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4495 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4496 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4497 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4498 return 1;
4499 }
4500 xOverX0 = fxOverX0ShieldTrks[index];
4501 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4502 lengthTimesMeanDensity *= dir;
7131593b 4503 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4504 break;
4505 }
4506
e50912db 4507 return 1;
4508}
4509//------------------------------------------------------------------------
4510Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4511 Int_t layerindex,
4512 Double_t oldGlobXYZ[3],
4513 TString direction) {
4514 //-------------------------------------------------------------------
4515 // Propagate beyond layer and correct for material
4516 // (material budget in different ways according to fUseTGeo value)
7131593b 4517 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4518 //-------------------------------------------------------------------
4519
4520 // Define budget mode:
4521 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4522 // 1: material from TGeo in stepsof X cm (on the fly)
4523 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4524 // 2: material from lut
9be1d1c7 4525 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4526 Int_t mode;
4527 switch(fUseTGeo) {
4528 case 0:
4529 mode=0;
4530 break;
4531 case 1:
4532 mode=1;
4533 break;
4534 case 2:
4535 mode=2;
4536 break;
4537 case 3:
4538 if(fTrackingPhase.Contains("Clusters2Tracks"))
4539 { mode=3; } else { mode=1; }
4540 break;
4541 case 4:
4542 if(fTrackingPhase.Contains("Clusters2Tracks"))
4543 { mode=3; } else { mode=2; }
4544 break;
4545 default:
4546 mode=0;
4547 break;
4548 }
4549 if(fTrackingPhase.Contains("Default")) mode=0;
4550
4551 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4552
4553 Double_t r=fgLayers[layerindex].GetR();
4554 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4555
4556 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4557 Double_t xToGo;
4558 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4559
4560 Int_t index=6*fCurrentEsdTrack+layerindex;
4561
e50912db 4562
4563 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4564 Int_t nsteps=1;
7131593b 4565
4566 // back before material (no correction)
d634c32b 4567 Double_t rOld,xOld;
7131593b 4568 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4569 if (!t->GetLocalXat(rOld,xOld)) return 0;
4570 if (!t->Propagate(xOld)) return 0;
e50912db 4571
4572 switch(mode) {
4573 case 0:
4574 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4575 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4576 lengthTimesMeanDensity *= dir;
7131593b 4577 // Bring the track beyond the material
4578 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4579 break;
4580 case 1:
9be1d1c7 4581 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4582 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4583 break;
4584 case 2:
4585 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4586 xOverX0 = fxOverX0Layer[layerindex];
4587 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4588 lengthTimesMeanDensity *= dir;
7131593b 4589 // Bring the track beyond the material
4590 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4591 break;
4592 case 3:
4593 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4594 if(fxOverX0LayerTrks[index]<0) {
4595 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4596 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4597 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4598 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4599 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4600 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4601 return 1;
e50912db 4602 }
4603 xOverX0 = fxOverX0LayerTrks[index];
4604 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4605 lengthTimesMeanDensity *= dir;
7131593b 4606 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4607 break;
4608 }
4609
7131593b 4610
e50912db 4611 return 1;
4612}
4613//------------------------------------------------------------------------
4614void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4615 //-----------------------------------------------------------------
4616 // Initialize LUT for storing material for each prolonged track
4617 //-----------------------------------------------------------------
4618 fxOverX0PipeTrks = new Float_t[ntracks];
4619 fxTimesRhoPipeTrks = new Float_t[ntracks];
4620 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4621 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4622 fxOverX0LayerTrks = new Float_t[ntracks*6];
4623 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4624
4625 for(Int_t i=0; i<ntracks; i++) {
4626 fxOverX0PipeTrks[i] = -1.;
4627 fxTimesRhoPipeTrks[i] = -1.;
4628 }
4629 for(Int_t j=0; j<ntracks*2; j++) {
4630 fxOverX0ShieldTrks[j] = -1.;
4631 fxTimesRhoShieldTrks[j] = -1.;
4632 }
4633 for(Int_t k=0; k<ntracks*6; k++) {
4634 fxOverX0LayerTrks[k] = -1.;
4635 fxTimesRhoLayerTrks[k] = -1.;
4636 }
4637
4638 fNtracks = ntracks;
4639
4640 return;
4641}
4642//------------------------------------------------------------------------
4643void AliITStrackerMI::DeleteTrksMaterialLUT() {
4644 //-----------------------------------------------------------------
4645 // Delete LUT for storing material for each prolonged track
4646 //-----------------------------------------------------------------
4647 if(fxOverX0PipeTrks) {
4648 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4649 }
4650 if(fxOverX0ShieldTrks) {
4651 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4652 }
4653
4654 if(fxOverX0LayerTrks) {
4655 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4656 }
4657 if(fxTimesRhoPipeTrks) {
4658 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4659 }
4660 if(fxTimesRhoShieldTrks) {
4661 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4662 }
4663 if(fxTimesRhoLayerTrks) {
4664 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4665 }
4666 return;
4667}
4668//------------------------------------------------------------------------
4fa7f7d1 4669void AliITStrackerMI::SetForceSkippingOfLayer() {
4670 //-----------------------------------------------------------------
4671 // Check if we are forced to skip layers
4672 // either we set to skip them in RecoParam
4673 // or they were off during data-taking
4674 //-----------------------------------------------------------------
4675
4676 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4677
4fa7f7d1 4678 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4679 fForceSkippingOfLayer[l] = 0;
4680 // check reco param
4681 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4682 // check run info
4683
87b4605f 4684 if(eventInfo &&
4685 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4686 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4687 if(l==0 || l==1) {
4688 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4689 } else if(l==2 || l==3) {
4690 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4691 } else {
4692 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4693 }
4694 }
4695 }
4696 return;
4697}
4698//------------------------------------------------------------------------
a70ed6ad 4699Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4700 Int_t ilayer,Int_t idet) const {
2755f080 4701 //-----------------------------------------------------------------
4702 // This method is used to decide whether to allow a prolongation
4703 // without clusters, because we want to skip the layer.
4704 // In this case the return value is > 0:
4705 // return 1: the user requested to skip a layer
371164ec 4706 // return 2: track outside z acceptance
2755f080 4707 //-----------------------------------------------------------------
e43c066c 4708
4fa7f7d1 4709 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4710
371164ec 4711 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4712
4713 if (idet<0 && // out in z
4714 ilayer>innerLayCanSkip &&
4715 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4716 // check if track will cross SPD outer layer
4717 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4718 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4719 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4720 }
371164ec 4721 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4722 }
51ad6848 4723
2755f080 4724 return 0;
4725}
4726//------------------------------------------------------------------------
23197852 4727Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4728 Int_t ilayer,Int_t idet,
1c97ce2f 4729 Double_t dz,Double_t dy,
23197852 4730 Bool_t noClusters) const {
6518a6c5 4731 //-----------------------------------------------------------------
4732 // This method is used to decide whether to allow a prolongation
ae00569a 4733 // without clusters, because there is a dead zone in the road.
6518a6c5 4734 // In this case the return value is > 0:
4735 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4736 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4737 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4738 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4739 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4740 //-----------------------------------------------------------------
4741
4742 // check dead zones at z=0,+-7cm in the SPD
4743 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4744 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4745 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4746 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4747 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4748 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4749 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4750 for (Int_t i=0; i<3; i++)
4187a601 4751 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4752 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4753 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4754 }
6518a6c5 4755 }
4756
23197852 4757 // check bad zones from OCDB
4758 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4759
23197852 4760 if (idet<0) return 0;
ae00569a 4761
23197852 4762 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4763
23197852 4764 Int_t detType=-1;
4765 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4766 if (ilayer==0 || ilayer==1) { // ---------- SPD
4767 detType = 0;
4768 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4769 detType = 1;
4770 detSizeFactorX *= 2.;
4771 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4772 detType = 2;
4773 }
a70ed6ad 4774 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4775 if (detType==2) segm->SetLayer(ilayer+1);
4776 Float_t detSizeX = detSizeFactorX*segm->Dx();
4777 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4778
4779 // check if the road overlaps with bad chips
4780 Float_t xloc,zloc;
e9b15b0c 4781 if(!(LocalModuleCoord(ilayer,idet,track,xloc,zloc)))return 0;
1c97ce2f 4782 Float_t zlocmin = zloc-dz;
4783 Float_t zlocmax = zloc+dz;
4784 Float_t xlocmin = xloc-dy;
4785 Float_t xlocmax = xloc+dy;
23197852 4786 Int_t chipsInRoad[100];
4787
4187a601 4788 // check if road goes out of detector
4789 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4790 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4791 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4792 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4793 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4794 AliDebug(2,Form("layer %d det %d zmim zmax %f %f xmin xmax %f %f %f %f",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,detSizeZ,detSizeX));
4795
4796 // check if this detector is bad
4797 if (det.IsBad()) {
4798 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4799 if(!touchNeighbourDet) {
4800 return 2; // all detectors in road are bad
4801 } else {
4802 return 3; // at least one is bad
4803 }
4804 }
4805
5d1c3df8 4806 if(zlocmin>zlocmax)return 0;
23197852 4807 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4808 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4809 if (!nChipsInRoad) return 0;
4810
4811 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4812 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4813 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4814 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4815 if (det.IsChipBad(chipsInRoad[iCh])) {
4816 anyBad=kTRUE;
4817 } else {
4818 anyGood=kTRUE;
4819 }
6518a6c5 4820 }
4821
4187a601 4822 if (!anyGood) {
4823 if(!touchNeighbourDet) {
4824 AliDebug(2,"all bad in road");
4825 return 2; // all chips in road are bad
4826 } else {
4827 return 3; // at least a bad chip in road
4828 }
4829 }
23197852 4830
4187a601 4831 if (anyBad) {
4832 AliDebug(2,"at least a bad in road");
4833 return 3; // at least a bad chip in road
4834 }
23197852 4835
4836
4837 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4838 || !noClusters) return 0;
4839
4840 // There are no clusters in road: check if there is at least
6a0fdcbd 4841 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4842
4187a601 4843 Int_t idetInITS=idet;
4844 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4845
4187a601 4846 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4847 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4848 return 4;
4187a601 4849 }
4850 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4851
6518a6c5 4852 return 0;
4853}
4854//------------------------------------------------------------------------
ae00569a 4855Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4856 const AliITStrackMI *track,
ae00569a 4857 Float_t &xloc,Float_t &zloc) const {
4858 //-----------------------------------------------------------------
4859 // Gives position of track in local module ref. frame
4860 //-----------------------------------------------------------------
4861
4862 xloc=0.;
4863 zloc=0.;
4864
371164ec 4865 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4866
4867 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4868
4869 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4870
ae00569a 4871 Int_t det = idet - (lad-1)*ndet + 1;
4872
4873 Double_t xyzGlob[3],xyzLoc[3];
4874
1c97ce2f 4875 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4876 // take into account the misalignment: xyz at real detector plane
d1181f10 4877 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4878
d1181f10 4879 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4880
4881 xloc = (Float_t)xyzLoc[0];
4882 zloc = (Float_t)xyzLoc[2];
4883
4884 return kTRUE;
4885}
4886//------------------------------------------------------------------------
879cdb02 4887//------------------------------------------------------------------------
0442469d 4888Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer){
0e91092f 4889//
4890// Method to be optimized further:
4891// Aim: decide whether a track can be used for PlaneEff evaluation
4892// the decision is taken based on the track quality at the layer under study
4893// no information on the clusters on this layer has to be used
4894// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4895// the cut is done on number of sigmas from the boundaries
4896//
4897// Input: Actual track, layer [0,5] under study
4898// Output: none
4899// Return: kTRUE if this is a good track
7167ae53 4900//
4901// it will apply a pre-selection to obtain good quality tracks.
4902// Here also you will have the possibility to put a control on the
4903// impact point of the track on the basic block, in order to exclude border regions
4904// this will be done by calling a proper method of the AliITSPlaneEff class.
4905//
4906// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4907// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4908//
4909 Int_t index[AliITSgeomTGeo::kNLayers];
4910 Int_t k;
4911 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4912 //
4913 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4914 index[k]=clusters[k];
4915 }
4916
0e91092f 4917 if(!fPlaneEff)
a31a139f 4918 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4919 AliITSlayer &layer=fgLayers[ilayer];
4920 Double_t r=layer.GetR();
8a32c4b5 4921 AliITStrackMI tmp(*track);
4922
0ed58a47 4923// require a minimal number of cluster in other layers and eventually clusters in closest layers
f1b15b8d 4924 Int_t nclout=0; Int_t nclin=0;
061c42a0 4925 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
879cdb02 4926 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
0ed58a47 4927 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
f1b15b8d 4928 // if (tmp.GetClIndex(lay)>=0) nclout++;
4929if(index[lay]>=0)nclout++;
0ed58a47 4930 }
061c42a0 4931 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4932 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4933 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
f1b15b8d 4934 if (index[lay]>=0) nclin++;
061c42a0 4935 }
f1b15b8d 4936 Int_t ncl=nclout+nclin;
0ed58a47 4937 Bool_t nextout = kFALSE;
4938 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4939 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4940 Bool_t nextin = kFALSE;
4941 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4942 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4943 // maximum number of missing clusters allowed in outermost layers
f1b15b8d 4944 if(nclout<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
061c42a0 4945 return kFALSE;
4946 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4947 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 4948 return kFALSE;
4949 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4950 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4951 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4952 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4953
8a32c4b5 4954// detector number
4955 Double_t phi,z;
4956 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4957 Int_t idet=layer.FindDetectorIndex(phi,z);
4958 if(idet<0) { AliInfo(Form("cannot find detector"));
4959 return kFALSE;}
4960
4961 // here check if it has good Chi Square.
4962
4963 //propagate to the intersection with the detector plane
4964 const AliITSdetector &det=layer.GetDetector(idet);
4965 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4966
4967 Float_t locx; //
4968 Float_t locz; //
0e91092f 4969 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4970 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4971 if(key>fPlaneEff->Nblock()) return kFALSE;
4972 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4973 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4974 //***************
0e91092f 4975 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4976 //
061c42a0 4977 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4978 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
cff21c12 4979 Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXFromBoundaryPlaneEff();
4980 Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZFromBoundaryPlaneEff();
4981 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
4982 // those are precisions in the tracking reference system
4983 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
4984 // Use it also for the module reference system, as it is done for RecPoints
4985
4986 if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigFrmBndPlaneEff()){
4987 if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) dx -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
4988 else dx -= distx;
4989
4990 if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) dz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
4991 else dz -= distz;
4992 }
8a32c4b5 4993
1c97ce2f 4994 // exclude tracks at boundary between detectors
0e91092f 4995 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4996 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4997 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4998 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4999 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
0e91092f 5000 if ( (locx-dx < blockXmn+boundaryWidth) ||
5001 (locx+dx > blockXmx-boundaryWidth) ||
5002 (locz-dz < blockZmn+boundaryWidth) ||
5003 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
0442469d 5004
5005 if(ilayer==0){
5006 const AliESDEvent *myesd = ((AliESDtrack*)tmp.GetESDtrack())->GetESDEvent();
5007 //The beam pipe
5008 if (CorrectForPipeMaterial(&tmp,"inward")) {
5009 const AliESDVertex* vtx = myesd->GetVertex();
5010 if(!vtx) return kFALSE;
5011 Double_t ddz[2],cov[3];
5012 Double_t maxD=3.;
5013 if(!tmp.PropagateToDCA(vtx,AliTracker::GetBz(),maxD,ddz,cov)) return kFALSE;
5014 if(TMath::Abs(ddz[0])>=AliITSReconstructor::GetRecoParam()->GetDCACutPlaneEff()) return kFALSE;
5015
5016 Double_t covar[6]; vtx->GetCovMatrix(covar);
5017 Double_t p[2]={tmp.GetParameter()[0]-ddz[0],tmp.GetParameter()[1]-ddz[1]};
5018 Double_t c[3]={covar[2],0.,covar[5]};
5019 Double_t chi2= ((AliESDtrack*)tmp.GetESDtrack())->GetPredictedChi2(p,c);
5020 if (chi2>AliITSReconstructor::GetRecoParam()->GetVertexChi2CutPlaneEff()) return kFALSE; // Use this to cut on chi^2
5021
5022 } else return kFALSE;
5023 }
5024
5025
8a32c4b5 5026 return kTRUE;
7167ae53 5027}
5028//------------------------------------------------------------------------
a70ed6ad 5029void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 5030//
5031// This Method has to be optimized! For the time-being it uses the same criteria
5032// as those used in the search of extra clusters for overlapping modules.
5033//
5034// Method Purpose: estabilish whether a track has produced a recpoint or not
5035// in the layer under study (For Plane efficiency)
5036//
5037// inputs: AliITStrackMI* track (pointer to a usable track)
5038// outputs: none
5039// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
5040// traversed by this very track. In details:
5041// - if a cluster can be associated to the track then call
5042// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
5043// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
5044//
a31a139f 5045 if(!fPlaneEff)
5046 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 5047 AliITSlayer &layer=fgLayers[ilayer];
5048 Double_t r=layer.GetR();
7167ae53 5049 AliITStrackMI tmp(*track);
5050
5051// detector number
5052 Double_t phi,z;
5053 if (!tmp.GetPhiZat(r,phi,z)) return;
5054 Int_t idet=layer.FindDetectorIndex(phi,z);
5055
8a32c4b5 5056 if(idet<0) { AliInfo(Form("cannot find detector"));
5057 return;}
7167ae53 5058
7167ae53 5059
0e91092f 5060//propagate to the intersection with the detector plane
7167ae53 5061 const AliITSdetector &det=layer.GetDetector(idet);
5062 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 5063
1c97ce2f 5064
0e91092f 5065//***************
5066// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5067//
5068 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5069 TMath::Sqrt(tmp.GetSigmaZ2() +
5070 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5071 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5072 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5073 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5074 TMath::Sqrt(tmp.GetSigmaY2() +
5075 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5076 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5077 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5078
5079// road in global (rphi,z) [i.e. in tracking ref. system]
5080 Double_t zmin = tmp.GetZ() - dz;
5081 Double_t zmax = tmp.GetZ() + dz;
5082 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5083 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5084
5085// select clusters in road
7167ae53 5086 layer.SelectClusters(zmin,zmax,ymin,ymax);
5087
0e91092f 5088// Define criteria for track-cluster association
7167ae53 5089 Double_t msz = tmp.GetSigmaZ2() +
5090 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5091 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5092 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5093 Double_t msy = tmp.GetSigmaY2() +
5094 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5095 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5096 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 5097 if (tmp.GetConstrain()) {
7167ae53 5098 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5099 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 5100 } else {
5101 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5102 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5103 }
cff21c12 5104
5105 if(AliITSReconstructor::GetRecoParam()->GetSwitchOffStdSearchClusPlaneEff()){
5106 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXSearchClusterPlaneEff();
5107 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZSearchClusterPlaneEff();
5108 Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXSearchClusterPlaneEff();
5109 Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZSearchClusterPlaneEff();
5110 msy = nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
5111 msz = nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
5112
5113 if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigSrhClusPlaneEff()){
5114 if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) msy -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
5115 else msy -= distx;
5116
5117 if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) msz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
5118 else msz -= distz;
5119 }
5120
5121 msy *= msy;
5122 msz *= msz;
5123
5124 }
5125
5126 if(msz==0 || msy==0){AliWarning("UseTrackForPlaneEff: null search frame"); return;}
5127
7167ae53 5128 msz = 1./msz; // 1/RoadZ^2
5129 msy = 1./msy; // 1/RoadY^2
7167ae53 5130
5131 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5132 Int_t idetc=-1;
8a32c4b5 5133 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5134 //Double_t tolerance=0.2;
5135 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 5136 idetc = cl->GetDetectorIndex();
5137 if(idet!=idetc) continue;
5138 //Int_t ilay = cl->GetLayer();
5139
5140 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5141 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5142
5143 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 5144 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5145 }*/
5146 Float_t locx; //
5147 Float_t locz; //
0e91092f 5148 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 5149//
5150 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5151 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5152 if(key>fPlaneEff->Nblock()) return;
5153 Bool_t found=kFALSE;
8a32c4b5 5154 //if (ci>=0) {
1cc5cedc 5155 Double_t chi2;
8a32c4b5 5156 while ((cl=layer.GetNextCluster(clidx))!=0) {
5157 idetc = cl->GetDetectorIndex();
5158 if(idet!=idetc) continue;
5159 // here real control to see whether the cluster can be associated to the track.
5160 // cluster not associated to track
5161 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5162 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5163 // calculate track-clusters chi2
1cc5cedc 5164 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5165 // in particular, the error associated to the cluster
8a32c4b5 5166 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5167 // chi2 cut
5168 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 5169 found=kTRUE;
8a32c4b5 5170 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 5171 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5172 // track->SetExtraModule(ilayer,idetExtra);
5173 }
5174 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 5175 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
1f1e7832 5176
5177// this for FO efficiency studies (only for SPD) //
5178 UInt_t keyFO=999999;
5179 Bool_t foundFO=kFALSE;
5180 if(ilayer<2){ //ONLY SPD layers for FastOr studies
5181 TBits mapFO = fkDetTypeRec->GetFastOrFiredMap();
5182 Int_t phase = (fEsd->GetBunchCrossNumber())%4;
5183 if(!fSPDChipIntPlaneEff[key]){
5184 AliITSPlaneEffSPD spd;
5185 keyFO = spd.SwitchChipKeyNumbering(key);
5186 if(mapFO.TestBitNumber(keyFO))foundFO=kTRUE;
5187 keyFO = key + (AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip)*(phase+1);
5188 if(keyFO<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip) {
5189 AliWarning(Form("UseTrackForPlaneEff: too small keyF0 (= %d), setting it to 999999",keyFO));
5190 keyFO=999999;
5191 }
5192 if(!fPlaneEff->UpDatePlaneEff(foundFO,keyFO))
5193 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for FastOR for key=%d",keyFO));
5194 }
5195 }
5196
5197
5198
5fbd4fd6 5199 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 5200 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5201 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5202 Int_t cltype[2]={-999,-999};
879cdb02 5203 // and the module
5204
f1b15b8d 5205 Float_t angleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
0e91092f 5206
5207 tr[0]=locx;
5208 tr[1]=locz;
5209 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5210 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5211
3ebe30ad 5212 if (found){
5213 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5214 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5215 cltype[0]=layer.GetCluster(ci)->GetNy();
5216 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 5217
5218 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5219 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5220 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5221 // It is computed properly by calling the method
5222 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5223 // T
5224 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5225 //if (tmp.PropagateTo(x,0.,0.)) {
5226 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5227 AliCluster c(*layer.GetCluster(ci));
5228 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5229 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 5230 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 5231 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5232 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 5233 //}
3ebe30ad 5234 }
879cdb02 5235 // Compute the angles between the track and the module
5236 // compute the angle "in phi direction", i.e. the angle in the transverse plane
5237 // between the normal to the module and the projection (in the transverse plane) of the
5238 // track trajectory
5239 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
5240 Float_t tgl = tmp.GetTgl();
5241 Float_t phitr = tmp.GetSnp();
5242 phitr = TMath::ASin(phitr);
5243 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
5244
5245 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
5246 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
5247 Double_t alpha =0.;
5248 alpha = tmp.GetAlpha();
5249 Double_t phiglob = alpha+phitr;
5250 Double_t p[3];
5251 p[0] = TMath::Cos(phiglob);
5252 p[1] = TMath::Sin(phiglob);
5253 p[2] = tgl;
5254 TVector3 pvec(p[0],p[1],p[2]);
5255 TVector3 normvec(rot[1],rot[4],rot[7]);
5256 Double_t angle = pvec.Angle(normvec);
5257
5258 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
5259 angle *= 180./TMath::Pi();
5260
5261 //Trasverse Plane
5262 TVector3 pt(p[0],p[1],0);
5263 TVector3 normt(rot[1],rot[4],0);
5264 Double_t anglet = pt.Angle(normt);
5265
5266 Double_t phiPt = TMath::ATan2(p[1],p[0]);
5267 if(phiPt<0)phiPt+=2.*TMath::Pi();
5268 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
5269 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
5270 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
5271 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
5272 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
5273 anglet *= 180./TMath::Pi();
5274
f1b15b8d 5275 angleModTrack[2]=(Float_t) angle;
5276 angleModTrack[0]=(Float_t) anglet;
879cdb02 5277 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
f1b15b8d 5278 angleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
5279 angleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
5280 angleModTrack[1]*=180./TMath::Pi(); // in degree
879cdb02 5281
f1b15b8d 5282 fPlaneEff->FillHistos(key,found,tr,clu,cltype,angleModTrack);
1f1e7832 5283
5284 // For FO efficiency studies of SPD
f1b15b8d 5285 if(ilayer<2 && !fSPDChipIntPlaneEff[key]) fPlaneEff->FillHistos(keyFO,foundFO,tr,clu,cltype,angleModTrack);
5fbd4fd6 5286 }
1f1e7832 5287 if(ilayer<2) fSPDChipIntPlaneEff[key]=kTRUE;
7167ae53 5288return;
5289}
a4354152 5290
5291Int_t AliITStrackerMI::FindClusterOfTrack(int label, int lr, int* store) const //RS
5292{
5293 // find the MC cluster for the label
5294 return fgLayers[lr].FindClusterForLabel(label,store);
5295}
5296
fa4c46da 5297/*
a4354152 5298Int_t AliITStrackerMI::GetPattern(const AliITStrackMI* track, char* patt)
5299{
5300 // creates pattarn of hits marking fake/corrects by f/c. Used for debugging (RS)
cff9e015 5301 strncpy(patt,"......",6);
a4354152 5302 int tpcLabel = 0;
5303 if (track->GetESDtrack()) tpcLabel = track->GetESDtrack()->GetTPCLabel();
5304 //
5305 int nwrong = 0;
5306 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
5307 Int_t cindex = track->GetClusterIndex(i);
5308 Int_t l=(cindex & 0xf0000000) >> 28;
5309 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
5310 Int_t isWrong=1;
5311 for (Int_t ind=0;ind<3;ind++) if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
5312 patt[l] = isWrong ? 'f':'c';
5313 nwrong+=isWrong;
5314 }
5315 return nwrong;
5316}
fa4c46da 5317*/
a4354152 5318//------------------------------------------------------------------------
b80c197e 5319Int_t AliITStrackerMI::AliITSlayer::FindClusterForLabel(Int_t label, Int_t *store) const
5320{ //RS
a4354152 5321 //--------------------------------------------------------------------
5322
5323 int nfound = 0;
5324 for (int ic=0;ic<fN;ic++) {
5325 const AliITSRecPoint *cl = GetCluster(ic);
5326 for (int i=0;i<3;i++) if (cl->GetLabel(i)==label) {
5327 if (nfound<50) {
5328 if (store) store[nfound] = ic;
5329 nfound++;
5330 }
5331 break;
5332 }
5333 }
5334 return nfound;
5335}