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Modifications needed to use PID framework based mass during tracking and
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
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 */
566 Int_t nentr=event->GetNumberOfTracks();
75a74b11 567 noesd=nentr;
568 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 569 while (nentr--) {
570 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 571 // ---- for debugging:
572 //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 573
574 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
575 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
576 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 577 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
763bdf3e 578 AliITStrackMI *t = new AliITStrackMI(*esd);
b9671574 579 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
580 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 581
e43c066c 582 // write expected q
b9671574 583 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 584
afd25725 585 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 586 //track - can be V0 according to TPC
afd25725 587 } else {
588 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 589 delete t;
590 continue;
e50912db 591 }
afd25725 592 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 593 delete t;
594 continue;
595 }
6c23ffed 596 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 597 delete t;
598 continue;
599 }
e50912db 600 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 601 delete t;
602 continue;
603 }
e43c066c 604 }
b9671574 605 t->SetReconstructed(kFALSE);
e43c066c 606 itsTracks.AddLast(t);
628e7bb0 607 fOriginal.AddLast(t);
e43c066c 608 }
609 } /* End Read ESD tracks */
610
611 itsTracks.Sort();
628e7bb0 612 fOriginal.Sort();
e43c066c 613 Int_t nentr=itsTracks.GetEntriesFast();
614 fTrackHypothesys.Expand(nentr);
81e97e0d 615 fBestHypothesys.Expand(nentr);
afd25725 616 MakeCoefficients(nentr);
513ab112 617 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 618 Int_t ntrk=0;
afd25725 619 // THE TWO TRACKING PASSES
e43c066c 620 for (fPass=0; fPass<2; fPass++) {
621 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 622 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 623 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 624 if (t==0) continue; //this track has been already tracked
1c97ce2f 625 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 626 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 627 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 628 if (fConstraint[fPass]) {
629 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
630 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
631 }
e43c066c 632
633 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 634 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 635 fI = 6;
636 ResetTrackToFollow(*t);
637 ResetBestTrack();
6518a6c5 638
e50912db 639 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 640
e43c066c 641
642 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
643 //
ae00569a 644 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 645 if (!besttrack) continue;
646 besttrack->SetLabel(tpcLabel);
647 // besttrack->CookdEdx();
648 CookdEdx(besttrack);
b9671574 649 besttrack->SetFakeRatio(1.);
e43c066c 650 CookLabel(besttrack,0.); //For comparison only
e43c066c 651 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 652 t->SetWinner(besttrack);
628e7bb0 653
628e7bb0 654 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
655
b9671574 656 t->SetReconstructed(kTRUE);
1c97ce2f 657 ntrk++;
4187a601 658 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 659 }
660 GetBestHypothesysMIP(itsTracks);
afd25725 661 } // end loop on the two tracking passes
a4354152 662 //
663 if (fFlagFakes) FlagFakes(itsTracks);
664 //
cd90f0a2 665 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
666 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 667 fAfterV0 = kTRUE;
628e7bb0 668 //
a0b53cc4 669 itsTracks.Clear();
e43c066c 670 //
671 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 672 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 673 TObjArray * array =(TObjArray*)fTrackHypothesys.At(ientry);
e43c066c 674 if (array) array->Delete();
675 delete fTrackHypothesys.RemoveAt(ientry);
676 }
677
678 fTrackHypothesys.Delete();
4ffece29 679 entries = fBestHypothesys.GetEntriesFast();
680 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 681 TObjArray * array =(TObjArray*)fBestHypothesys.At(ientry);
4ffece29 682 if (array) array->Delete();
683 delete fBestHypothesys.RemoveAt(ientry);
684 }
81e97e0d 685 fBestHypothesys.Delete();
628e7bb0 686 fOriginal.Clear();
afd25725 687 delete [] fCoefficients;
688 fCoefficients=0;
e50912db 689 DeleteTrksMaterialLUT();
690
75a74b11 691 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 692
693 fTrackingPhase="Default";
628e7bb0 694
e43c066c 695 return 0;
696}
44347160 697//------------------------------------------------------------------------
af885e0f 698Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 699 //--------------------------------------------------------------------
700 // This functions propagates reconstructed ITS tracks back
701 // The clusters must be loaded !
702 //--------------------------------------------------------------------
e50912db 703 fTrackingPhase="PropagateBack";
e43c066c 704 Int_t nentr=event->GetNumberOfTracks();
75a74b11 705 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
6bc9851f 706 double bz0 = GetBz();
707 const double kWatchStep=10.; // for larger steps watch arc vs segment difference
708 //
e43c066c 709 Int_t ntrk=0;
710 for (Int_t i=0; i<nentr; i++) {
711 AliESDtrack *esd=event->GetTrack(i);
712
a512bf97 713 // Start time integral and add distance from current position to vertex
e43c066c 714 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
48b634ff 715 AliITStrackMI t(*esd);
67178f34 716 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
48b634ff 717 t.GetXYZ(xyzTrk);
67178f34 718 Double_t dst2 = 0.;
6bc9851f 719 {
720 double dxs = xyzTrk[0] - xyzVtx[0];
721 double dys = xyzTrk[1] - xyzVtx[1];
722 double dzs = xyzTrk[2] - xyzVtx[2];
723 // RS: for large segment steps d use approximation of cicrular arc s by
724 // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2)
725 // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature)
726 // Hence s^2/d^2 = (1+1/6 p^2)^2
727 dst2 = dxs*dxs + dys*dys;
728 if (dst2 > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor
729 double crv = TMath::Abs(esd->GetC(bz0));
730 double fcarc = 1.+crv*crv*dst2/6.;
731 dst2 *= fcarc*fcarc;
732 }
733 dst2 += dzs*dzs;
734 }
48b634ff 735 t.StartTimeIntegral();
736 t.AddTimeStep(TMath::Sqrt(dst2));
a512bf97 737 //
738 // transfer the time integral to ESD track
739 esd->SetStatus(AliESDtrack::kTIME);
48b634ff 740 Double_t times[10];t.GetIntegratedTimes(times); esd->SetIntegratedTimes(times);
741 esd->SetIntegratedLength(t.GetIntegratedLength());
a512bf97 742 //
48b634ff 743 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
e43c066c 744
48b634ff 745 t.SetExpQ(TMath::Max(0.8*t.GetESDtrack()->GetTPCsignal(),30.));
746 ResetTrackToFollow(t);
a512bf97 747 //
6c94f330 748 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
48b634ff 749 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,&t)) {
750 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) continue;
773dd1f5 751 // fTrackToFollow.SetLabel(t.GetLabel()); // why do we neet this
a512bf97 752 //fTrackToFollow.CookdEdx();
773dd1f5 753 CookLabel(&fTrackToFollow,0.); //For comparison only // why do we need this?
a512bf97 754 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
755 //UseClusters(&fTrackToFollow);
756 ntrk++;
e43c066c 757 }
e43c066c 758 }
759
75a74b11 760 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 761
e50912db 762 fTrackingPhase="Default";
763
e43c066c 764 return 0;
765}
44347160 766//------------------------------------------------------------------------
af885e0f 767Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 768 //--------------------------------------------------------------------
769 // This functions refits ITS tracks using the
770 // "inward propagated" TPC tracks
771 // The clusters must be loaded !
772 //--------------------------------------------------------------------
e50912db 773 fTrackingPhase="RefitInward";
44396017 774
cd90f0a2 775 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 776
794d9013 777 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
778 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
779
e43c066c 780 Int_t nentr=event->GetNumberOfTracks();
75a74b11 781 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 782
1f1e7832 783 // only for PlaneEff and in case of SPD (for FO studies)
784 if( AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
785 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0 &&
786 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()<2) {
787 for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
788 }
789
e43c066c 790 Int_t ntrk=0;
791 for (Int_t i=0; i<nentr; i++) {
792 AliESDtrack *esd=event->GetTrack(i);
793
794 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
795 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
796 if (esd->GetStatus()&AliESDtrack::kTPCout)
797 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
798
763bdf3e 799 AliITStrackMI *t = new AliITStrackMI(*esd);
800
b9671574 801 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 802 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 803 delete t;
804 continue;
805 }
806
807 ResetTrackToFollow(*t);
808 fTrackToFollow.ResetClusters();
809
ef3508c5 810 // ITS standalone tracks
811 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
6c94f330 812 fTrackToFollow.ResetCovariance(10.);
ef3508c5 813 // protection for loopers that can have parameters screwed up
814 if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
815 TMath::Abs(fTrackToFollow.GetZ())>1000.) {
816 delete t;
817 continue;
818 }
819 }
e43c066c 820
821 //Refitting...
58e8dc31 822 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
823 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 824
4187a601 825 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
794d9013 826 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
4187a601 827 AliDebug(2," refit OK");
e43c066c 828 fTrackToFollow.SetLabel(t->GetLabel());
829 // fTrackToFollow.CookdEdx();
830 CookdEdx(&fTrackToFollow);
831
773dd1f5 832 CookLabel(&fTrackToFollow,0.0); //For comparison only // RS why do we need this?
e43c066c 833
9a5326b1 834 //The beam pipe
e50912db 835 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 836 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 837 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 838 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
839 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 840 Double_t r[3]={0.,0.,0.};
9a5326b1 841 Double_t maxD=3.;
842 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
843 ntrk++;
e43c066c 844 }
845 }
846 delete t;
847 }
848
75a74b11 849 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 850
e50912db 851 fTrackingPhase="Default";
852
e43c066c 853 return 0;
854}
44347160 855//------------------------------------------------------------------------
e43c066c 856AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
857 //--------------------------------------------------------------------
858 // Return pointer to a given cluster
859 //--------------------------------------------------------------------
860 Int_t l=(index & 0xf0000000) >> 28;
861 Int_t c=(index & 0x0fffffff) >> 00;
862 return fgLayers[l].GetCluster(c);
863}
9a5326b1 864//------------------------------------------------------------------------
df29e9a4 865Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 866 //--------------------------------------------------------------------
df29e9a4 867 // Get track space point with index i
9a5326b1 868 //--------------------------------------------------------------------
60066577 869
78b03929 870 Int_t l=(index & 0xf0000000) >> 28;
871 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 872 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 873 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 874
60066577 875 Float_t xyz[3];
876 Float_t cov[6];
877 cl->GetGlobalXYZ(xyz);
878 cl->GetGlobalCov(cov);
879 p.SetXYZ(xyz, cov);
be77c8c9 880 p.SetCharge(cl->GetQ());
ebbcf1ea 881 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 882 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 883 p.SetClusterType(cl->GetClusterType());
ae079791 884 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 885 switch (l) {
886 case 0:
ae079791 887 iLayer = AliGeomManager::kSPD1;
df29e9a4 888 break;
889 case 1:
ae079791 890 iLayer = AliGeomManager::kSPD2;
df29e9a4 891 break;
892 case 2:
ae079791 893 iLayer = AliGeomManager::kSDD1;
df29e9a4 894 break;
895 case 3:
ae079791 896 iLayer = AliGeomManager::kSDD2;
9a5326b1 897 break;
898 case 4:
899 iLayer = AliGeomManager::kSSD1;
900 break;
901 case 5:
902 iLayer = AliGeomManager::kSSD2;
903 break;
904 default:
905 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
906 break;
907 };
908 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
909 p.SetVolumeID((UShort_t)volid);
910 return kTRUE;
911}
912//------------------------------------------------------------------------
913Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
914 AliTrackPoint& p, const AliESDtrack *t) {
915 //--------------------------------------------------------------------
916 // Get track space point with index i
917 // (assign error estimated during the tracking)
918 //--------------------------------------------------------------------
919
920 Int_t l=(index & 0xf0000000) >> 28;
921 Int_t c=(index & 0x0fffffff) >> 00;
922 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
923 Int_t idet = cl->GetDetectorIndex();
4187a601 924
9a5326b1 925 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
926
927 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
928 Float_t detxy[2];
929 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
930 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
931 Double_t alpha = t->GetAlpha();
932 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
242bd643 933 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
9a5326b1 934 phi += alpha-det.GetPhi();
935 Float_t tgphi = TMath::Tan(phi);
936
937 Float_t tgl = t->GetTgl(); // tgl about const along track
938 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
939
d9ead1a0 940 Float_t errtrky,errtrkz,covyz;
8c139cf3 941 Bool_t addMisalErr=kFALSE;
d9ead1a0 942 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 943
944 Float_t xyz[3];
945 Float_t cov[6];
946 cl->GetGlobalXYZ(xyz);
947 // cl->GetGlobalCov(cov);
948 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 949 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 950 tmpcl.GetGlobalCov(cov);
951
952 p.SetXYZ(xyz, cov);
be77c8c9 953 p.SetCharge(cl->GetQ());
ebbcf1ea 954 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 955 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 956 p.SetClusterType(cl->GetClusterType());
9a5326b1 957
958 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
959 switch (l) {
960 case 0:
961 iLayer = AliGeomManager::kSPD1;
962 break;
963 case 1:
964 iLayer = AliGeomManager::kSPD2;
965 break;
966 case 2:
967 iLayer = AliGeomManager::kSDD1;
968 break;
969 case 3:
970 iLayer = AliGeomManager::kSDD2;
df29e9a4 971 break;
972 case 4:
ae079791 973 iLayer = AliGeomManager::kSSD1;
df29e9a4 974 break;
975 case 5:
ae079791 976 iLayer = AliGeomManager::kSSD2;
df29e9a4 977 break;
978 default:
979 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
980 break;
981 };
ae079791 982 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 983
df29e9a4 984 p.SetVolumeID((UShort_t)volid);
985 return kTRUE;
986}
44347160 987//------------------------------------------------------------------------
81e97e0d 988void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 989{
990 //--------------------------------------------------------------------
991 // Follow prolongation tree
992 //--------------------------------------------------------------------
81e97e0d 993 //
afd25725 994 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
995 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
996
2755f080 997
b9671574 998 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 999 if (esd->GetV0Index(0)>0) {
81e97e0d 1000 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 1001 // mapping of ESD track is different as ITS track in Containers
81e97e0d 1002 // Need something more stable
44347160 1003 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 1004 for (Int_t i=0;i<3;i++){
1005 Int_t index = esd->GetV0Index(i);
1006 if (index==0) break;
d6a49f20 1007 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 1008 if (vertex->GetStatus()<0) continue; // rejected V0
1009 //
afd25725 1010 if (esd->GetSign()>0) {
1011 vertex->SetIndex(0,esdindex);
1012 } else {
1013 vertex->SetIndex(1,esdindex);
1014 }
81e97e0d 1015 }
1016 }
1017 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
1018 if (!bestarray){
1019 bestarray = new TObjArray(5);
4ffece29 1020 bestarray->SetOwner();
81e97e0d 1021 fBestHypothesys.AddAt(bestarray,esdindex);
1022 }
e43c066c 1023
81e97e0d 1024 //
e43c066c 1025 //setup tree of the prolongations
1026 //
a4354152 1027 const int kMaxTr = 100; //RS
1028 static AliITStrackMI tracks[7][kMaxTr];
15dd636f 1029 AliITStrackMI *currenttrack;
1030 static AliITStrackMI currenttrack1;
1031 static AliITStrackMI currenttrack2;
1032 static AliITStrackMI backuptrack;
e43c066c 1033 Int_t ntracks[7];
a4354152 1034 Int_t nindexes[7][kMaxTr];
1035 Float_t normalizedchi2[kMaxTr];
e43c066c 1036 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 1037 otrack->SetNSkipped(0);
15dd636f 1038 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 1039 ntracks[6]=1;
81e97e0d 1040 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 1041 Int_t modstatus = 1; // found
1042 Float_t xloc,zloc;
e43c066c 1043 //
1044 //
1045 // follow prolongations
e50912db 1046 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 1047 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 1048 fI = ilayer;
e43c066c 1049 //
2755f080 1050 AliITSlayer &layer=fgLayers[ilayer];
1051 Double_t r = layer.GetR();
e43c066c 1052 ntracks[ilayer]=0;
1053 //
1054 //
2755f080 1055 Int_t nskipped=0;
e43c066c 1056 Float_t nused =0;
e50912db 1057 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
a4354152 1058 // printf("LR %d Tr:%d NSeeds: %d\n",ilayer,itrack,ntracks[ilayer+1]);
e43c066c 1059 //set current track
a4354152 1060 if (ntracks[ilayer]>=kMaxTr) break;
b9671574 1061 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1062 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 1063 if (ntracks[ilayer]>15+ilayer){
b9671574 1064 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1065 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 1066 }
1067
15dd636f 1068 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1069
afd25725 1070 // material between SSD and SDD, SDD and SPD
e50912db 1071 if (ilayer==3)
1072 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1073 if (ilayer==1)
1074 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1075
2755f080 1076 // detector number
8602c008 1077 Double_t phi,z;
1078 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1079 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1080
1081 Double_t trackGlobXYZ1[3];
d1181f10 1082 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1083
2755f080 1084 // Get the budget to the primary vertex for the current track being prolonged
a4354152 1085 Double_t budgetToPrimVertex = 0;
1086 double xMSLrs[9],x2X0MSLrs[9]; // needed for ImproveKalman
1087 int nMSLrs = 0;
1088 //
1089 if (fUseImproveKalman) nMSLrs = GetEffectiveThicknessLbyL(xMSLrs,x2X0MSLrs);
1090 else budgetToPrimVertex = GetEffectiveThickness();
1091 //
2755f080 1092 // check if we allow a prolongation without point
6518a6c5 1093 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1094 if (skip) {
1095 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1096 // propagate to the layer radius
d1181f10 1097 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1098 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1099 // apply correction for material of the current layer
1100 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1101 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1102 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1103 vtrack->SetClIndex(ilayer,-1);
ae00569a 1104 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1105 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1106 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1107 }
a4354152 1108 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1109 fUseImproveKalman ?
1110 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1111 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1112 }
2755f080 1113 ntracks[ilayer]++;
6518a6c5 1114 continue;
2755f080 1115 }
1116
1117 // track outside layer acceptance in z
1118 if (idet<0) continue;
1119
1120 //propagate to the intersection with the detector plane
1121 const AliITSdetector &det=layer.GetDetector(idet);
1122 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1123 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1124 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1125 currenttrack1.SetDetectorIndex(idet);
1126 currenttrack2.SetDetectorIndex(idet);
d1181f10 1127 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1128
afd25725 1129 //***************
1c97ce2f 1130 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1131 //
2755f080 1132 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1133 Double_t zmin,zmax,ymin,ymax;
1134 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1135
afd25725 1136 // select clusters in road
e43c066c 1137 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1138 //********************
44347160 1139
afd25725 1140 // Define criteria for track-cluster association
44347160 1141 Double_t msz = currenttrack1.GetSigmaZ2() +
1142 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1143 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1144 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1145 Double_t msy = currenttrack1.GetSigmaY2() +
1146 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1147 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1148 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1149 if (constrain) {
1150 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1151 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1152 } else {
1153 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1154 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1155 }
1156 msz = 1./msz; // 1/RoadZ^2
1157 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1158
e43c066c 1159 //
e43c066c 1160 //
afd25725 1161 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1162 //
afd25725 1163 const AliITSRecPoint *cl=0;
1164 Int_t clidx=-1;
1165 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1166 Bool_t deadzoneSPD=kFALSE;
e43c066c 1167 currenttrack = &currenttrack1;
6518a6c5 1168
ae00569a 1169 // check if the road contains a dead zone
23197852 1170 Bool_t noClusters = kFALSE;
1171 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1172 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1173 Double_t dz=0.5*(zmax-zmin);
1174 Double_t dy=0.5*(ymax-ymin);
1175 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1176 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1177 // create a prolongation without clusters (check also if there are no clusters in the road)
1178 if (dead ||
23197852 1179 (noClusters &&
ae00569a 1180 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1181 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1182 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1183 if (dead==0) {
1184 modstatus = 5; // no cls in road
1185 } else if (dead==1) {
1186 modstatus = 7; // holes in z in SPD
f8720bda 1187 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1188 modstatus = 2; // dead from OCDB
1189 }
1190 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1191 // apply correction for material of the current layer
1192 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1193 if (constrain) { // apply vertex constrain
1194 updatetrack->SetConstrain(constrain);
1195 Bool_t isPrim = kTRUE;
1196 if (ilayer<4) { // check that it's close to the vertex
1197 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1198 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1199 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1200 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1201 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1202 }
a4354152 1203 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1204 fUseImproveKalman ?
1205 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1206 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1207 }
6518a6c5 1208 }
f8720bda 1209 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1210 if (dead) {
ae00569a 1211 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1212 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1213 deadzoneSPD=kTRUE;
f8720bda 1214 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1215 updatetrack->SetDeadZoneProbability(ilayer,1.);
1216 } else if (dead==4) { // at least a single dead channel from OCDB
1217 updatetrack->SetDeadZoneProbability(ilayer,0.);
1218 }
6518a6c5 1219 }
1220 ntracks[ilayer]++;
1221 }
1222
ae00569a 1223 clidx=-1;
6518a6c5 1224 // loop over clusters in the road
afd25725 1225 while ((cl=layer.GetNextCluster(clidx))!=0) {
a4354152 1226 if (ntracks[ilayer]>int(0.95*kMaxTr)) break; //space for skipped clusters
afd25725 1227 Bool_t changedet =kFALSE;
88e3c173 1228 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1229 Int_t idetc=cl->GetDetectorIndex();
afd25725 1230
a5d0fae6 1231 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1232 // take into account misalignment (bring track to real detector plane)
1233 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1234 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1235 // a first cut on track-cluster distance
1236 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1237 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1238 { // cluster not associated to track
4187a601 1239 AliDebug(2,"not associated");
421c4ba7 1240 // MvL: added here as well
1241 // bring track back to ideal detector plane
1242 currenttrack->Propagate(xTrOrig);
1c97ce2f 1243 continue;
1244 }
1245 // bring track back to ideal detector plane
9be1d1c7 1246 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1247 } else { // have to move track to cluster's detector
a5d0fae6 1248 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1249 // a first cut on track-cluster distance
a5d0fae6 1250 Double_t y;
1c97ce2f 1251 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1252 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1253 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1254 continue; // cluster not associated to track
e43c066c 1255 //
15dd636f 1256 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1257 changedet = kTRUE;
e43c066c 1258 currenttrack =&currenttrack2;
a5d0fae6 1259 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1260 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1261 changedet = kFALSE;
e43c066c 1262 continue;
1263 }
a5d0fae6 1264 currenttrack->SetDetectorIndex(idetc);
e50912db 1265 // Get again the budget to the primary vertex
1266 // for the current track being prolonged, if had to change detector
1267 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1268 }
1269
afd25725 1270 // calculate track-clusters chi2
1271 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1272 // chi2 cut
4187a601 1273 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1274 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1275 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
a4354152 1276 if (ntracks[ilayer]>=kMaxTr) continue;
15dd636f 1277 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1278 updatetrack->SetClIndex(ilayer,-1);
afd25725 1279 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1280
88e3c173 1281 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1282 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1283 AliDebug(2,"update failed");
1c97ce2f 1284 continue;
1285 }
09cf9d66 1286 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1287 modstatus = 1; // found
6518a6c5 1288 } else { // virtual cluster in dead zone
b9671574 1289 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1290 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1291 modstatus = 7; // holes in z in SPD
1292 }
1293
1294 if (changedet) {
1295 Float_t xlocnewdet,zlocnewdet;
d1181f10 1296 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1297 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1298 }
ae00569a 1299 } else {
1300 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1301 }
afd25725 1302 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1303
1304 // apply correction for material of the current layer
e50912db 1305 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1306
afd25725 1307 if (constrain) { // apply vertex constrain
b9671574 1308 updatetrack->SetConstrain(constrain);
e43c066c 1309 Bool_t isPrim = kTRUE;
afd25725 1310 if (ilayer<4) { // check that it's close to the vertex
b9671574 1311 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1312 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1313 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1314 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1315 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1316 }
a4354152 1317 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1318 fUseImproveKalman ?
1319 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1320 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1321 }
e43c066c 1322 } //apply vertex constrain
1323 ntracks[ilayer]++;
afd25725 1324 } // create new hypothesis
4187a601 1325 else {
1326 AliDebug(2,"chi2 too large");
1327 }
1328
2755f080 1329 } // loop over possible prolongations
1330
1331 // allow one prolongation without clusters
a4354152 1332 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<kMaxTr) {
15dd636f 1333 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1334 // apply correction for material of the current layer
1335 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1336 vtrack->SetClIndex(ilayer,-1);
ae00569a 1337 modstatus = 3; // skipped
1338 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
a4354152 1339 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1340 fUseImproveKalman ?
1341 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1342 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1343 }
b9671574 1344 vtrack->IncrementNSkipped();
e43c066c 1345 ntracks[ilayer]++;
1346 }
1347
6262dd3d 1348
e50912db 1349 } // loop over tracks in layer ilayer+1
afd25725 1350
1351 //loop over track candidates for the current layer
e43c066c 1352 //
1353 //
1354 Int_t accepted=0;
1355
afd25725 1356 Int_t golden=0;
e43c066c 1357 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1358 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1359 if (normalizedchi2[itrack] <
1360 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1361 if (ilayer>4) {
1362 accepted++;
1363 } else {
1364 if (constrain) { // constrain
afd25725 1365 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1366 accepted++;
44347160 1367 } else { // !constrain
afd25725 1368 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1369 accepted++;
44347160 1370 }
e43c066c 1371 }
1372 }
afd25725 1373 // sort tracks by increasing normalized chi2
1374 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1375 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1376 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
a4354152 1377 // if (ntracks[ilayer]>90) ntracks[ilayer]=90;
04315dad 1378 if (ntracks[ilayer]>int(kMaxTr*0.9)) ntracks[ilayer]=int(kMaxTr*0.9);
afd25725 1379 } // end loop over layers
1380
afd25725 1381
1382 //
1383 // Now select tracks to be kept
1384 //
44347160 1385 Int_t max = constrain ? 20 : 5;
e43c066c 1386
afd25725 1387 // tracks that reach layer 0 (SPD inner)
44347160 1388 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1389 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1390 if (track.GetNumberOfClusters()<2) continue;
afd25725 1391 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1392 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1393 continue;
1394 }
15dd636f 1395 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1396 }
afd25725 1397
1398 // tracks that reach layer 1 (SPD outer)
628e7bb0 1399 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1400 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1401 if (track.GetNumberOfClusters()<4) continue;
afd25725 1402 if (!constrain && track.GetNormChi2(1) >
1403 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1404 if (constrain) track.IncrementNSkipped();
81e97e0d 1405 if (!constrain) {
b9671574 1406 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1407 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1408 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1409 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1410 }
1411 }
15dd636f 1412 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1413 }
afd25725 1414
6518a6c5 1415 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1416 if (!constrain){
628e7bb0 1417 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1418 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1419 if (track.GetNumberOfClusters()<3) continue;
9cd19c63 1420 if (track.GetNormChi2(2) >
afd25725 1421 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
9cd19c63 1422 track.SetD(0,track.GetD(GetX(),GetY()));
1423 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1424 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1425 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1426 }
15dd636f 1427 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1428 }
1429 }
81e97e0d 1430
afd25725 1431 if (!constrain) {
81e97e0d 1432 //
afd25725 1433 // register best track of each layer - important for V0 finder
81e97e0d 1434 //
1435 for (Int_t ilayer=0;ilayer<5;ilayer++){
1436 if (ntracks[ilayer]==0) continue;
1437 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1438 if (track.GetNumberOfClusters()<1) continue;
1439 CookLabel(&track,0);
1440 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1441 }
1442 }
1443 //
1444 // update TPC V0 information
1445 //
b9671574 1446 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1447 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1448 for (Int_t i=0;i<3;i++){
b9671574 1449 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1450 if (index==0) break;
44347160 1451 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1452 if (vertex->GetStatus()<0) continue; // rejected V0
1453 //
6c94f330 1454 if (otrack->GetSign()>0) {
81e97e0d 1455 vertex->SetIndex(0,esdindex);
1456 }
1457 else{
1458 vertex->SetIndex(1,esdindex);
1459 }
1460 //find nearest layer with track info
b75d63a7 1461 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1462 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1463 Int_t nearest = nearestold;
9cd19c63 1464 for (Int_t ilayer =nearest;ilayer<7;ilayer++){
81e97e0d 1465 if (ntracks[nearest]==0){
1466 nearest = ilayer;
1467 }
1468 }
1469 //
1470 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1471 if (nearestold<5&&nearest<5){
b9671574 1472 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1473 if (accept){
6c94f330 1474 if (track.GetSign()>0) {
b75d63a7 1475 vertex->SetParamP(track);
81e97e0d 1476 vertex->Update(fprimvertex);
44347160 1477 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1478 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1479 }else{
b75d63a7 1480 vertex->SetParamN(track);
81e97e0d 1481 vertex->Update(fprimvertex);
1482 //vertex->SetIndex(1,track.fESDtrack->GetID());
1483 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1484 }
1485 vertex->SetStatus(vertex->GetStatus()+1);
1486 }else{
44347160 1487 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1488 }
1489 }
81e97e0d 1490 }
afd25725 1491 }
1492
e43c066c 1493}
44347160 1494//------------------------------------------------------------------------
e43c066c 1495AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1496{
1497 //--------------------------------------------------------------------
1498 //
1499 //
1500 return fgLayers[layer];
1501}
44347160 1502//------------------------------------------------------------------------
8221b41b 1503AliITStrackerMI::AliITSlayer::AliITSlayer():
1504fR(0),
1505fPhiOffset(0),
1506fNladders(0),
1507fZOffset(0),
1508fNdetectors(0),
1509fDetectors(0),
1510fN(0),
1511fDy5(0),
1512fDy10(0),
1513fDy20(0),
1514fClustersCs(0),
1515fClusterIndexCs(0),
1516fYcs(0),
1517fZcs(0),
1518fNcs(0),
1519fCurrentSlice(-1),
d9ead1a0 1520fZmin(0),
8221b41b 1521fZmax(0),
1522fYmin(0),
1523fYmax(0),
1524fI(0),
1525fImax(0),
1526fSkip(0),
1527fAccepted(0),
d9ead1a0 1528fRoad(0),
1529fMaxSigmaClY(0),
1530fMaxSigmaClZ(0),
1531fNMaxSigmaCl(3)
1532{
e43c066c 1533 //--------------------------------------------------------------------
1534 //default AliITSlayer constructor
1535 //--------------------------------------------------------------------
e50912db 1536 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1537 fClusterWeight[i]=0;
1538 fClusterTracks[0][i]=-1;
1539 fClusterTracks[1][i]=-1;
1540 fClusterTracks[2][i]=-1;
9cd19c63 1541 fClusterTracks[3][i]=-1;
1542 fY[i]=0;
1543 fZ[i]=0;
1544 }
1545 fYB[0]=0;
1546 fYB[1]=0;
1547
4edc3c8c 1548 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
9cd19c63 1549 for (Int_t j1=0; j1<6; j1++) {
1550 fClusters5[j1][j]=0;
1551 fClusterIndex5[j1][j]=-1;
1552 fY5[j1][j]=0;
1553 fZ5[j1][j]=0;
1554 fN5[j1]=0;
1555 fBy5[j1][0]=0;
1556 fBy5[j1][1]=0;
1557 }
1558 }
1559
4edc3c8c 1560 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
9cd19c63 1561 for (Int_t j1=0; j1<11; j1++) {
1562 fClusters10[j1][j]=0;
1563 fClusterIndex10[j1][j]=-1;
1564 fY10[j1][j]=0;
1565 fZ10[j1][j]=0;
1566 fN10[j1]=0;
1567 fBy10[j1][0]=0;
1568 fBy10[j1][1]=0;
1569 }
e43c066c 1570 }
9cd19c63 1571
4edc3c8c 1572 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
9cd19c63 1573 for (Int_t j1=0; j1<21; j1++) {
1574 fClusters20[j1][j]=0;
1575 fClusterIndex20[j1][j]=-1;
1576 fY20[j1][j]=0;
1577 fZ20[j1][j]=0;
1578 fN20[j1]=0;
1579 fBy20[j1][0]=0;
1580 fBy20[j1][1]=0;
1581 }
1582 }
4edc3c8c 1583 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
e8c2bf0d 1584 fClusters[i]=NULL;
1585 fClusterIndex[i]=0;
1586 }
e43c066c 1587}
44347160 1588//------------------------------------------------------------------------
e43c066c 1589AliITStrackerMI::AliITSlayer::
8221b41b 1590AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1591fR(r),
1592fPhiOffset(p),
1593fNladders(nl),
1594fZOffset(z),
1595fNdetectors(nd),
1596fDetectors(0),
1597fN(0),
1598fDy5(0),
1599fDy10(0),
1600fDy20(0),
1601fClustersCs(0),
1602fClusterIndexCs(0),
1603fYcs(0),
1604fZcs(0),
1605fNcs(0),
1606fCurrentSlice(-1),
d9ead1a0 1607fZmin(0),
8221b41b 1608fZmax(0),
1609fYmin(0),
1610fYmax(0),
1611fI(0),
1612fImax(0),
1613fSkip(0),
1614fAccepted(0),
d9ead1a0 1615fRoad(0),
1616fMaxSigmaClY(0),
1617fMaxSigmaClZ(0),
1618fNMaxSigmaCl(3) {
e43c066c 1619 //--------------------------------------------------------------------
1620 //main AliITSlayer constructor
1621 //--------------------------------------------------------------------
e43c066c 1622 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1623 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
9cd19c63 1624
1625 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1626 fClusterWeight[i]=0;
1627 fClusterTracks[0][i]=-1;
1628 fClusterTracks[1][i]=-1;
1629 fClusterTracks[2][i]=-1;
1630 fClusterTracks[3][i]=-1;
1631 fY[i]=0;
1632 fZ[i]=0;
1633 }
1634
1635 fYB[0]=0;
1636 fYB[1]=0;
1637
4edc3c8c 1638 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
9cd19c63 1639 for (Int_t j1=0; j1<6; j1++) {
1640 fClusters5[j1][j]=0;
1641 fClusterIndex5[j1][j]=-1;
1642 fY5[j1][j]=0;
1643 fZ5[j1][j]=0;
1644 fN5[j1]=0;
1645 fBy5[j1][0]=0;
1646 fBy5[j1][1]=0;
1647 }
1648 }
1649
4edc3c8c 1650 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
9cd19c63 1651 for (Int_t j1=0; j1<11; j1++) {
1652 fClusters10[j1][j]=0;
1653 fClusterIndex10[j1][j]=-1;
1654 fY10[j1][j]=0;
1655 fZ10[j1][j]=0;
1656 fN10[j1]=0;
1657 fBy10[j1][0]=0;
1658 fBy10[j1][1]=0;
1659 }
1660 }
1661
4edc3c8c 1662 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
9cd19c63 1663 for (Int_t j1=0; j1<21; j1++) {
1664 fClusters20[j1][j]=0;
1665 fClusterIndex20[j1][j]=-1;
1666 fY20[j1][j]=0;
1667 fZ20[j1][j]=0;
1668 fN20[j1]=0;
1669 fBy20[j1][0]=0;
1670 fBy20[j1][1]=0;
1671 }
1672 }
4edc3c8c 1673 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
e8c2bf0d 1674 fClusters[i]=NULL;
1675 fClusterIndex[i]=0;
1676 }
e43c066c 1677}
225cff59 1678/*
44347160 1679//------------------------------------------------------------------------
8221b41b 1680AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1681fR(layer.fR),
1682fPhiOffset(layer.fPhiOffset),
1683fNladders(layer.fNladders),
1684fZOffset(layer.fZOffset),
1685fNdetectors(layer.fNdetectors),
1686fDetectors(layer.fDetectors),
1687fN(layer.fN),
1688fDy5(layer.fDy5),
1689fDy10(layer.fDy10),
1690fDy20(layer.fDy20),
1691fClustersCs(layer.fClustersCs),
1692fClusterIndexCs(layer.fClusterIndexCs),
1693fYcs(layer.fYcs),
1694fZcs(layer.fZcs),
1695fNcs(layer.fNcs),
1696fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1697fZmin(layer.fZmin),
8221b41b 1698fZmax(layer.fZmax),
1699fYmin(layer.fYmin),
1700fYmax(layer.fYmax),
1701fI(layer.fI),
1702fImax(layer.fImax),
1703fSkip(layer.fSkip),
1704fAccepted(layer.fAccepted),
d9ead1a0 1705fRoad(layer.fRoad),
1706fMaxSigmaClY(layer.fMaxSigmaClY),
1707fMaxSigmaClZ(layer.fMaxSigmaClZ),
1708fNMaxSigmaCl(layer.fNMaxSigmaCl)
1709{
8221b41b 1710 //Copy constructor
1711}
225cff59 1712*/
44347160 1713//------------------------------------------------------------------------
e43c066c 1714AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1715 //--------------------------------------------------------------------
1716 // AliITSlayer destructor
1717 //--------------------------------------------------------------------
23197852 1718 delete [] fDetectors;
e43c066c 1719 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1720 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1721 fClusterWeight[i]=0;
1722 fClusterTracks[0][i]=-1;
1723 fClusterTracks[1][i]=-1;
1724 fClusterTracks[2][i]=-1;
1725 fClusterTracks[3][i]=-1;
1726 }
1727}
44347160 1728//------------------------------------------------------------------------
e43c066c 1729void AliITStrackerMI::AliITSlayer::ResetClusters() {
1730 //--------------------------------------------------------------------
1731 // This function removes loaded clusters
1732 //--------------------------------------------------------------------
1733 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1734 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1735 fClusterWeight[i]=0;
1736 fClusterTracks[0][i]=-1;
1737 fClusterTracks[1][i]=-1;
1738 fClusterTracks[2][i]=-1;
1739 fClusterTracks[3][i]=-1;
1740 }
1741
1742 fN=0;
1743 fI=0;
1744}
44347160 1745//------------------------------------------------------------------------
e43c066c 1746void AliITStrackerMI::AliITSlayer::ResetWeights() {
1747 //--------------------------------------------------------------------
1748 // This function reset weights of the clusters
1749 //--------------------------------------------------------------------
e50912db 1750 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1751 fClusterWeight[i]=0;
1752 fClusterTracks[0][i]=-1;
1753 fClusterTracks[1][i]=-1;
1754 fClusterTracks[2][i]=-1;
1755 fClusterTracks[3][i]=-1;
1756 }
1757 for (Int_t i=0; i<fN;i++) {
00a7cc50 1758 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1759 if (cl&&cl->IsUsed()) cl->Use();
1760 }
1761
1762}
44347160 1763//------------------------------------------------------------------------
e43c066c 1764void AliITStrackerMI::AliITSlayer::ResetRoad() {
1765 //--------------------------------------------------------------------
1766 // This function calculates the road defined by the cluster density
1767 //--------------------------------------------------------------------
1768 Int_t n=0;
1769 for (Int_t i=0; i<fN; i++) {
1770 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1771 }
afd25725 1772 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1773}
44347160 1774//------------------------------------------------------------------------
afd25725 1775Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1776 //--------------------------------------------------------------------
1777 //This function adds a cluster to this layer
1778 //--------------------------------------------------------------------
e50912db 1779 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1780 return 1;
1781 }
1782 fCurrentSlice=-1;
afd25725 1783 fClusters[fN]=cl;
1d4090b7 1784 fN++;
afd25725 1785 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1786 //AD
1787 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1788 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1789 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1790 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1791 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1792 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1793 //AD
1794 /*
afd25725 1795 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1796 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1797 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1798 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1799 */
e43c066c 1800 return 0;
1801}
44347160 1802//------------------------------------------------------------------------
e43c066c 1803void AliITStrackerMI::AliITSlayer::SortClusters()
1804{
1805 //
1806 //sort clusters
1807 //
00a7cc50 1808 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1809 Float_t *z = new Float_t[fN];
1810 Int_t * index = new Int_t[fN];
1811 //
d9ead1a0 1812 fMaxSigmaClY=0.; //AD
1813 fMaxSigmaClZ=0.; //AD
1814
1d4090b7 1815 for (Int_t i=0;i<fN;i++){
1816 z[i] = fClusters[i]->GetZ();
d9ead1a0 1817 // save largest errors in y and z for this layer
1818 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1819 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1820 }
1821 TMath::Sort(fN,z,index,kFALSE);
1822 for (Int_t i=0;i<fN;i++){
1823 clusters[i] = fClusters[index[i]];
1824 }
1825 //
1826 for (Int_t i=0;i<fN;i++){
1827 fClusters[i] = clusters[i];
1828 fZ[i] = fClusters[i]->GetZ();
1829 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1830 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1831 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1832 fY[i] = y;
1833 }
1834 delete[] index;
1835 delete[] z;
1836 delete[] clusters;
1837 //
1838
e43c066c 1839 fYB[0]=10000000;
1840 fYB[1]=-10000000;
1841 for (Int_t i=0;i<fN;i++){
1842 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1843 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1844 fClusterIndex[i] = i;
1845 }
1846 //
1847 // fill slices
1848 fDy5 = (fYB[1]-fYB[0])/5.;
1849 fDy10 = (fYB[1]-fYB[0])/10.;
1850 fDy20 = (fYB[1]-fYB[0])/20.;
1851 for (Int_t i=0;i<6;i++) fN5[i] =0;
1852 for (Int_t i=0;i<11;i++) fN10[i]=0;
1853 for (Int_t i=0;i<21;i++) fN20[i]=0;
1854 //
1855 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;}
1856 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;}
1857 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;}
1858 //
1859 //
1d4090b7 1860 for (Int_t i=0;i<fN;i++)
1861 for (Int_t irot=-1;irot<=1;irot++){
1862 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1863 // slice 5
1864 for (Int_t slice=0; slice<6;slice++){
e50912db 1865 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1866 fClusters5[slice][fN5[slice]] = fClusters[i];
1867 fY5[slice][fN5[slice]] = curY;
1868 fZ5[slice][fN5[slice]] = fZ[i];
1869 fClusterIndex5[slice][fN5[slice]]=i;
1870 fN5[slice]++;
1871 }
e43c066c 1872 }
1d4090b7 1873 // slice 10
1874 for (Int_t slice=0; slice<11;slice++){
e50912db 1875 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1876 fClusters10[slice][fN10[slice]] = fClusters[i];
1877 fY10[slice][fN10[slice]] = curY;
1878 fZ10[slice][fN10[slice]] = fZ[i];
1879 fClusterIndex10[slice][fN10[slice]]=i;
1880 fN10[slice]++;
1881 }
e43c066c 1882 }
1d4090b7 1883 // slice 20
1884 for (Int_t slice=0; slice<21;slice++){
e50912db 1885 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1886 fClusters20[slice][fN20[slice]] = fClusters[i];
1887 fY20[slice][fN20[slice]] = curY;
1888 fZ20[slice][fN20[slice]] = fZ[i];
1889 fClusterIndex20[slice][fN20[slice]]=i;
1890 fN20[slice]++;
1891 }
1892 }
e43c066c 1893 }
1d4090b7 1894
1895 //
1896 // consistency check
1897 //
1898 for (Int_t i=0;i<fN-1;i++){
1899 if (fZ[i]>fZ[i+1]){
ae00569a 1900 printf("Bug\n");
e43c066c 1901 }
1902 }
1d4090b7 1903 //
1904 for (Int_t slice=0;slice<21;slice++)
1905 for (Int_t i=0;i<fN20[slice]-1;i++){
1906 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1907 printf("Bug\n");
1d4090b7 1908 }
1909 }
1910
1911
e43c066c 1912}
44347160 1913//------------------------------------------------------------------------
e43c066c 1914Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1915 //--------------------------------------------------------------------
1916 // This function returns the index of the nearest cluster
1917 //--------------------------------------------------------------------
1918 Int_t ncl=0;
1919 const Float_t *zcl;
1920 if (fCurrentSlice<0) {
1921 ncl = fN;
1922 zcl = fZ;
1923 }
1924 else{
1925 ncl = fNcs;
1926 zcl = fZcs;;
1927 }
1928
1929 if (ncl==0) return 0;
1930 Int_t b=0, e=ncl-1, m=(b+e)/2;
1931 for (; b<e; m=(b+e)/2) {
1932 // if (z > fClusters[m]->GetZ()) b=m+1;
1933 if (z > zcl[m]) b=m+1;
1934 else e=m;
1935 }
1936 return m;
1937}
44347160 1938//------------------------------------------------------------------------
1c97ce2f 1939Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1940 //--------------------------------------------------------------------
1941 // This function computes the rectangular road for this track
1942 //--------------------------------------------------------------------
1943
1944
1945 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1946 // take into account the misalignment: propagate track to misaligned detector plane
1947 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1948
1949 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1950 TMath::Sqrt(track->GetSigmaZ2() +
1951 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1952 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1953 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1954 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1955 TMath::Sqrt(track->GetSigmaY2() +
1956 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1957 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1958 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1959
1960 // track at boundary between detectors, enlarge road
1961 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1962 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1963 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1964 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1965 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1966 Float_t tgl = TMath::Abs(track->GetTgl());
1967 if (tgl > 1.) tgl=1.;
1968 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1969 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1970 Float_t snp = TMath::Abs(track->GetSnp());
1971 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1972 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1973 } // boundary
1974
1975 // add to the road a term (up to 2-3 mm) to deal with misalignments
1976 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1977 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1978
1979 Double_t r = fgLayers[ilayer].GetR();
1980 zmin = track->GetZ() - dz;
1981 zmax = track->GetZ() + dz;
1982 ymin = track->GetY() + r*det.GetPhi() - dy;
1983 ymax = track->GetY() + r*det.GetPhi() + dy;
1984
1985 // bring track back to idead detector plane
1986 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1987
1988 return kTRUE;
1989}
1990//------------------------------------------------------------------------
e43c066c 1991void AliITStrackerMI::AliITSlayer::
1992SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1993 //--------------------------------------------------------------------
1994 // This function sets the "window"
1995 //--------------------------------------------------------------------
1996
628e7bb0 1997 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1998 fYmin = ymin;
1999 fYmax = ymax;
2000 fZmin = zmin;
2001 fZmax = zmax;
2002 // AD
2003 // enlarge road in y by maximum cluster error on this layer (3 sigma)
2004 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
2005 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
2006 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
2007 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
2008
e43c066c 2009 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 2010 if (ymiddle<fYB[0]) {
2011 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
2012 } else if (ymiddle>fYB[1]) {
2013 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 2014 }
ae00569a 2015
e43c066c 2016 //
2017 fCurrentSlice =-1;
2018 // defualt take all
2019 fClustersCs = fClusters;
2020 fClusterIndexCs = fClusterIndex;
2021 fYcs = fY;
2022 fZcs = fZ;
2023 fNcs = fN;
628e7bb0 2024 //
e43c066c 2025 //is in 20 slice?
2026 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
2027 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
2028 if (slice<0) slice=0;
2029 if (slice>20) slice=20;
2030 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
2031 if (isOK) {
2032 fCurrentSlice=slice;
2033 fClustersCs = fClusters20[fCurrentSlice];
2034 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
2035 fYcs = fY20[fCurrentSlice];
2036 fZcs = fZ20[fCurrentSlice];
2037 fNcs = fN20[fCurrentSlice];
2038 }
2039 }
2040 //
2041 //is in 10 slice?
2042 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
2043 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
2044 if (slice<0) slice=0;
2045 if (slice>10) slice=10;
2046 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
2047 if (isOK) {
2048 fCurrentSlice=slice;
2049 fClustersCs = fClusters10[fCurrentSlice];
2050 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
2051 fYcs = fY10[fCurrentSlice];
2052 fZcs = fZ10[fCurrentSlice];
2053 fNcs = fN10[fCurrentSlice];
2054 }
2055 }
2056 //
2057 //is in 5 slice?
2058 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
2059 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
2060 if (slice<0) slice=0;
2061 if (slice>5) slice=5;
2062 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 2063 if (isOK) {
e43c066c 2064 fCurrentSlice=slice;
2065 fClustersCs = fClusters5[fCurrentSlice];
2066 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
2067 fYcs = fY5[fCurrentSlice];
2068 fZcs = fZ5[fCurrentSlice];
2069 fNcs = fN5[fCurrentSlice];
2070 }
2071 }
628e7bb0 2072 //
d9ead1a0 2073 fI = FindClusterIndex(fZmin);
2074 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
2075 fSkip = 0;
2076 fAccepted = 0;
6518a6c5 2077
2078 return;
e43c066c 2079}
44347160 2080//------------------------------------------------------------------------
628e7bb0 2081Int_t AliITStrackerMI::AliITSlayer::
2082FindDetectorIndex(Double_t phi, Double_t z) const {
2083 //--------------------------------------------------------------------
2084 //This function finds the detector crossed by the track
2085 //--------------------------------------------------------------------
31fb8575 2086 Double_t dphi;
2087 if (fZOffset<0) // old geometry
2088 dphi = -(phi-fPhiOffset);
2089 else // new geometry
2090 dphi = phi-fPhiOffset;
2091
6518a6c5 2092
628e7bb0 2093 if (dphi < 0) dphi += 2*TMath::Pi();
2094 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
2095 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
2096 if (np>=fNladders) np-=fNladders;
2097 if (np<0) np+=fNladders;
2098
6518a6c5 2099
628e7bb0 2100 Double_t dz=fZOffset-z;
6518a6c5 2101 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
2102 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 2103 if (nz>=fNdetectors || nz<0) {
2104 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2105 return -1;
2106 }
628e7bb0 2107
23197852 2108 // ad hoc correction for 3rd ladder of SDD inner layer,
2109 // which is reversed (rotated by pi around local y)
2110 // this correction is OK only from AliITSv11Hybrid onwards
2111 if (GetR()>12. && GetR()<20.) { // SDD inner
2112 if(np==2) { // 3rd ladder
6801b453 2113 Double_t posMod252[3];
2114 AliITSgeomTGeo::GetTranslation(252,posMod252);
2115 // check the Z coordinate of Mod 252: if negative
2116 // (old SDD geometry in AliITSv11Hybrid)
2117 // the swap of numeration whould be applied
2118 if(posMod252[2]<0.){
2119 nz = (fNdetectors-1) - nz;
2120 }
2121 }
23197852 2122 }
2123 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2124
2125
628e7bb0 2126 return np*fNdetectors + nz;
2127}
44347160 2128//------------------------------------------------------------------------
ae00569a 2129const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
2130{
e43c066c 2131 //--------------------------------------------------------------------
2132 // This function returns clusters within the "window"
2133 //--------------------------------------------------------------------
2134
ae00569a 2135 if (fCurrentSlice<0) {
e43c066c 2136 Double_t rpi2 = 2.*fR*TMath::Pi();
2137 for (Int_t i=fI; i<fImax; i++) {
2138 Double_t y = fY[i];
d9ead1a0 2139 Double_t z = fZ[i];
e43c066c 2140 if (fYmax<y) y -= rpi2;
1d4090b7 2141 if (fYmin>y) y += rpi2;
e43c066c 2142 if (y<fYmin) continue;
2143 if (y>fYmax) continue;
d9ead1a0 2144 // AD
2145 // skip clusters that are in "extended" road but they
2146 // 3sigma error does not touch the original road
2147 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
2148 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
2149 //
88e3c173 2150 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2151 ci=i;
ae00569a 2152 if (!test) fI=i+1;
e43c066c 2153 return fClusters[i];
2154 }
ae00569a 2155 } else {
e43c066c 2156 for (Int_t i=fI; i<fImax; i++) {
2157 if (fYcs[i]<fYmin) continue;
2158 if (fYcs[i]>fYmax) continue;
88e3c173 2159 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2160 ci=fClusterIndexCs[i];
ae00569a 2161 if (!test) fI=i+1;
e43c066c 2162 return fClustersCs[i];
2163 }
2164 }
2165 return 0;
2166}
44347160 2167//------------------------------------------------------------------------
e43c066c 2168Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
2169const {
2170 //--------------------------------------------------------------------
afd25725 2171 // This function returns the layer thickness at this point (units X0)
e43c066c 2172 //--------------------------------------------------------------------
2173 Double_t d=0.0085;
e50912db 2174 x0=AliITSRecoParam::GetX0Air();
e43c066c 2175 if (43<fR&&fR<45) { //SSD2
2176 Double_t dd=0.0034;
2177 d=dd;
2178 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2179 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2180 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2181 for (Int_t i=0; i<12; i++) {
2182 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2183 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2184 d+=0.0034;
2185 break;
2186 }
2187 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2188 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2189 d+=0.0034;
2190 break;
2191 }
2192 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2193 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2194 }
2195 } else
2196 if (37<fR&&fR<41) { //SSD1
2197 Double_t dd=0.0034;
2198 d=dd;
2199 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2200 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2201 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2202 for (Int_t i=0; i<11; i++) {
2203 if (TMath::Abs(z-3.9*i)<0.15) {
2204 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2205 d+=dd;
2206 break;
2207 }
2208 if (TMath::Abs(z+3.9*i)<0.15) {
2209 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2210 d+=dd;
2211 break;
2212 }
2213 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2214 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2215 }
2216 } else
2217 if (13<fR&&fR<26) { //SDD
2218 Double_t dd=0.0033;
2219 d=dd;
2220 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2221
2222 if (TMath::Abs(y-1.80)<0.55) {
2223 d+=0.016;
2224 for (Int_t j=0; j<20; j++) {
2225 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2226 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2227 }
2228 }
2229 if (TMath::Abs(y+1.80)<0.55) {
2230 d+=0.016;
2231 for (Int_t j=0; j<20; j++) {
2232 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2233 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2234 }
2235 }
2236
2237 for (Int_t i=0; i<4; i++) {
2238 if (TMath::Abs(z-7.3*i)<0.60) {
2239 d+=dd;
2240 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2241 break;
2242 }
2243 if (TMath::Abs(z+7.3*i)<0.60) {
2244 d+=dd;
2245 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2246 break;
2247 }
2248 }
2249 } else
2250 if (6<fR&&fR<8) { //SPD2
2251 Double_t dd=0.0063; x0=21.5;
2252 d=dd;
2253 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2254 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2255 } else
2256 if (3<fR&&fR<5) { //SPD1
2257 Double_t dd=0.0063; x0=21.5;
2258 d=dd;
2259 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2260 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2261 }
2262
2263 return d;
2264}
44347160 2265//------------------------------------------------------------------------
23197852 2266AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2267fR(det.fR),
1c97ce2f 2268fRmisal(det.fRmisal),
23197852 2269fPhi(det.fPhi),
2270fSinPhi(det.fSinPhi),
2271fCosPhi(det.fCosPhi),
2272fYmin(det.fYmin),
2273fYmax(det.fYmax),
2274fZmin(det.fZmin),
2275fZmax(det.fZmax),
2276fIsBad(det.fIsBad),
2277fNChips(det.fNChips),
2278fChipIsBad(det.fChipIsBad)
2279{
2280 //Copy constructor
2281}
2282//------------------------------------------------------------------------
2283void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2284 const AliITSDetTypeRec *detTypeRec)
23197852 2285{
2286 //--------------------------------------------------------------------
2287 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2288 //--------------------------------------------------------------------
2289
2290 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2291 // while in the tracker they start from 0 for each layer
2292 for(Int_t il=0; il<ilayer; il++)
2293 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2294
2295 Int_t detType;
2296 if (ilayer==0 || ilayer==1) { // ---------- SPD
2297 detType = 0;
2298 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2299 detType = 1;
2300 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2301 detType = 2;
2302 } else {
2303 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2304 return;
2305 }
2306
2307 // Get calibration from AliITSDetTypeRec
2308 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2309 calib->SetModuleIndex(idet);
23197852 2310 AliITSCalibration *calibSPDdead = 0;
2311 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2312 if (calib->IsBad() ||
2313 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2314 {
2315 SetBad();
359ac74d 2316 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2317 }
2318
2319 // Get segmentation from AliITSDetTypeRec
2320 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2321
2322 // Read info about bad chips
2323 fNChips = segm->GetMaximumChipIndex()+1;
2324 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2325 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2326 fChipIsBad = new Bool_t[fNChips];
2327 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2328 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2329 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2330 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2331 }
2332
2333 return;
2334}
2335//------------------------------------------------------------------------
e50912db 2336Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2337{
2338 //--------------------------------------------------------------------
afd25725 2339 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2340 //--------------------------------------------------------------------
e43c066c 2341
e50912db 2342 if(fUseTGeo!=0) {
2343 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2344 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2345 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2346 }
2347
afd25725 2348 // beam pipe
e50912db 2349 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2350 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2351
2352 // layers
2353 Double_t x0=0;
e43c066c 2354 Double_t xn=fgLayers[fI].GetR();
2355 for (Int_t i=0; i<fI; i++) {
2356 Double_t xi=fgLayers[i].GetR();
e50912db 2357 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2358 d+=dLayer*xi*xi;
e43c066c 2359 }
2360
afd25725 2361 // shields
e43c066c 2362 if (fI>1) {
e50912db 2363 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2364 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2365 }
e43c066c 2366 if (fI>3) {
e50912db 2367 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2368 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2369 }
e43c066c 2370 return d/(xn*xn);
2371}
a4354152 2372
2373//------------------------------------------------------------------------
2374Int_t AliITStrackerMI::GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS)
2375{
2376 //--------------------------------------------------------------------
2377 // Returns the array of layers between the current layer and the vertex
2378 //--------------------------------------------------------------------
2379 //
2380 if(fUseTGeo!=0) {
2381 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2382 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2383 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2384 }
2385
2386 int nl = 0;
2387 double x0 = 0;
2388 for (int il=fI;il--;) {
2389 //
2390 if (il==3) {
2391 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2392 xMS[nl++] = AliITSRecoParam::GetrInsideShield(1);
2393 }
2394 else if (il==1) {
2395 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2396 xMS[nl++] = AliITSRecoParam::GetrInsideShield(0);
2397 }
2398 //
2399 x2x0MS[nl] = (fUseTGeo==0 ? fgLayers[il].GetThickness(0,0,x0) : fxOverX0Layer[il]);
2400 xMS[nl++] = fgLayers[il].GetR();
2401 //
2402 }
2403 //
2404 // beam pipe
2405 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2406 xMS[nl++] = AliITSRecoParam::GetrPipe();
2407 //
2408 return nl;
2409}
2410
2411
44347160 2412//------------------------------------------------------------------------
e43c066c 2413Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2414 //-------------------------------------------------------------------
e43c066c 2415 // This function returns number of clusters within the "window"
2416 //--------------------------------------------------------------------
2417 Int_t ncl=0;
2418 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2419 const AliITSRecPoint *c=fClusters[i];
e43c066c 2420 if (c->GetZ() > fZmax) break;
2421 if (c->IsUsed()) continue;
2422 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2423 Double_t y=fR*det.GetPhi() + c->GetY();
2424
2425 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2426 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2427
2428 if (y<fYmin) continue;
2429 if (y>fYmax) continue;
2430 ncl++;
2431 }
2432 return ncl;
2433}
44347160 2434//------------------------------------------------------------------------
ae00569a 2435Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2436 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2437{
e43c066c 2438 //--------------------------------------------------------------------
ae00569a 2439 // This function refits the track "track" at the position "x" using
2440 // the clusters from "clusters"
ef7253ac 2441 // If "extra"==kTRUE,
ae00569a 2442 // the clusters from overlapped modules get attached to "track"
7167ae53 2443 // If "planeff"==kTRUE,
2444 // special approach for plane efficiency evaluation is applyed
e43c066c 2445 //--------------------------------------------------------------------
6518a6c5 2446
e50912db 2447 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2448 Int_t k;
e50912db 2449 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2450 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2451 for (k=0; k<nc; k++) {
ae00569a 2452 Int_t idx=clusters->GetClusterIndex(k);
2453 Int_t ilayer=(idx&0xf0000000)>>28;
2454 index[ilayer]=idx;
e43c066c 2455 }
67c1e979 2456
7167ae53 2457 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2458}
44347160 2459//------------------------------------------------------------------------
ae00569a 2460Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2461 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2462{
67c1e979 2463 //--------------------------------------------------------------------
ae00569a 2464 // This function refits the track "track" at the position "x" using
67c1e979 2465 // the clusters from array
ae00569a 2466 // If "extra"==kTRUE,
2467 // the clusters from overlapped modules get attached to "track"
7167ae53 2468 // If "planeff"==kTRUE,
2469 // special approach for plane efficiency evaluation is applyed
67c1e979 2470 //--------------------------------------------------------------------
e50912db 2471 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2472 Int_t k;
e50912db 2473 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2474 //
e50912db 2475 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2476 index[k]=clusters[k];
67c1e979 2477 }
2478
74008278 2479 // special for cosmics and TPC prolonged tracks:
269709f8 2480 // propagate to the innermost of:
2481 // - innermost layer crossed by the track
2482 // - innermost layer where a cluster was associated to the track
74008278 2483 static AliITSRecoParam *repa = NULL;
2484 if(!repa){
2485 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2486 if(!repa){
2487 repa = AliITSRecoParam::GetHighFluxParam();
2488 AliWarning("Using default AliITSRecoParam class");
2489 }
2490 }
2491 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2492 ULong_t trStatus=0;
2493 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2494 Int_t innermostlayer=0;
15f91fcd 2495 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2496 innermostlayer=5;
2497 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2498 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2499 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2500 index[innermostlayer] >= 0 ) break;
74008278 2501 }
269709f8 2502
74008278 2503 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2504 }
afd25725 2505
ae00569a 2506 Int_t modstatus=1; // found
2507 Float_t xloc,zloc;
67c1e979 2508 Int_t from, to, step;
ae00569a 2509 if (xx > track->GetX()) {
e50912db 2510 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2511 step=+1;
2512 } else {
e50912db 2513 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2514 step=-1;
2515 }
ae00569a 2516 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2517
ae00569a 2518 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2519 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2520 Double_t r=layer.GetR();
4fa7f7d1 2521
afd25725 2522 if (step<0 && xx>r) break;
2523
2524 // material between SSD and SDD, SDD and SPD
6518a6c5 2525 Double_t hI=ilayer-0.5*step;
e50912db 2526 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2527 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2528 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2529 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2530
ae00569a 2531
afd25725 2532 Double_t oldGlobXYZ[3];
d1181f10 2533 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2534
67178f34 2535 // continue if we are already beyond this layer
2536 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2537 if(step>0 && oldGlobR > r) continue; // going outward
2538 if(step<0 && oldGlobR < r) continue; // going inward
2539
8602c008 2540 Double_t phi,z;
ae00569a 2541 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2542
67c1e979 2543 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2544
2545 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2546 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2547 if (skip==2) {
ae00569a 2548 modstatus = 4; // out in z
d1181f10 2549 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2550 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2551 }
7131593b 2552 // cross layer
2553 // apply correction for material of the current layer
2554 // add time if going outward
2555 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2556 continue;
2557 }
2558
e50912db 2559 if (idet<0) return kFALSE;
ae00569a 2560
4fa7f7d1 2561
67c1e979 2562 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2563 // only for ITS-SA tracks refit
2564 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2565 //
1c97ce2f 2566 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2567
ae00569a 2568 track->SetDetectorIndex(idet);
d1181f10 2569 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2570
23197852 2571 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2572
2573 const AliITSRecPoint *clAcc=0;
44347160 2574 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2575
6518a6c5 2576 Int_t idx=index[ilayer];
ae00569a 2577 if (idx>=0) { // cluster in this layer
2578 modstatus = 6; // no refit
2579 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2580 if (cl) {
2581 if (idet != cl->GetDetectorIndex()) {
2582 idet=cl->GetDetectorIndex();
a5d0fae6 2583 const AliITSdetector &detc=layer.GetDetector(idet);
2584 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2585 track->SetDetectorIndex(idet);
d1181f10 2586 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2587 }
ae00569a 2588 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2589 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2590 if (chi2<maxchi2) {
2591 clAcc=cl;
2592 maxchi2=chi2;
2593 modstatus = 1; // found
2594 } else {
7167ae53 2595 return kFALSE; //
ae00569a 2596 }
2597 }
2598 } else { // no cluster in this layer
2599 if (skip==1) {
2600 modstatus = 3; // skipped
0ed58a47 2601 // Plane Eff determination:
2602 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2603 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2604 UseTrackForPlaneEff(track,ilayer);
7167ae53 2605 }
ae00569a 2606 } else {
2607 modstatus = 5; // no cls in road
2608 // check dead
1c97ce2f 2609 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2610 dz = 0.5*(zmax-zmin);
2611 dy = 0.5*(ymax-ymin);
2612 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2613 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2614 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2615 }
e43c066c 2616 }
ae00569a 2617
2618 if (clAcc) {
2619 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2620 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2621 }
ae00569a 2622 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2623
2624
ef3508c5 2625 if (extra && clAcc) { // search for extra clusters in overlapped modules
ae00569a 2626 AliITStrackV2 tmp(*track);
1c97ce2f 2627 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2628 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2629
2630 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2631 Int_t idetExtra=-1;
a5d0fae6 2632 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2633 Double_t tolerance=0.1;
ae00569a 2634 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2635 // only clusters in another module! (overlaps)
2636 idetExtra = clExtra->GetDetectorIndex();
2637 if (idet == idetExtra) continue;
2638
a5d0fae6 2639 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2640
1c97ce2f 2641 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2642 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2643 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2644 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2645
2646 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2647 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2648 }
2649 if (cci>=0) {
2650 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2651 track->SetExtraModule(ilayer,idetExtra);
2652 }
2653 } // end search for extra clusters in overlapped modules
1c97ce2f 2654
afd25725 2655 // Correct for material of the current layer
7131593b 2656 // cross material
2657 // add time if going outward
ae00569a 2658 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2659 track->SetCheckInvariant(kTRUE);
ae00569a 2660 } // end loop on layers
2661
db355ee7 2662 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2663
e43c066c 2664 return kTRUE;
2665}
44347160 2666//------------------------------------------------------------------------
15dd636f 2667Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2668{
2669 //
2670 // calculate normalized chi2
2671 // return NormalizedChi2(track,0);
2672 Float_t chi2 = 0;
2673 Float_t sum=0;
2674 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2675 // track->fdEdxMismatch=0;
2676 Float_t dedxmismatch =0;
2677 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2678 if (mode<100){
2679 for (Int_t i = 0;i<6;i++){
9fd412a8 2680 if (track->GetClIndex(i)>=0){
e43c066c 2681 Float_t cerry, cerrz;
2682 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2683 else
b9671574 2684 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2685 cerry*=cerry;
2686 cerrz*=cerrz;
b9671574 2687 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2688 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2689 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2690 if (ratio<0.5) {
2691 cchi2+=(0.5-ratio)*10.;
2692 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2693 dedxmismatch+=(0.5-ratio)*10.;
2694 }
2695 }
2696 if (i<2 ||i>3){
b9671574 2697 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2698 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2699 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2700 if (i<2) chi2+=2*cl->GetDeltaProbability();
2701 }
2702 chi2+=cchi2;
2703 sum++;
2704 }
2705 }
b9671574 2706 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2707 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2708 }
2709 }
2710 else{
2711 for (Int_t i = 0;i<4;i++){
9fd412a8 2712 if (track->GetClIndex(i)>=0){
e43c066c 2713 Float_t cerry, cerrz;
2714 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2715 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2716 cerry*=cerry;
2717 cerrz*=cerrz;
b9671574 2718 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2719 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2720 sum++;
2721 }
2722 }
2723 for (Int_t i = 4;i<6;i++){
9fd412a8 2724 if (track->GetClIndex(i)>=0){
e43c066c 2725 Float_t cerry, cerrz;
2726 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2727 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2728 cerry*=cerry;
2729 cerrz*=cerrz;
2730 Float_t cerryb, cerrzb;
2731 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2732 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2733 cerryb*=cerryb;
2734 cerrzb*=cerrzb;
b9671574 2735 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2736 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2737 sum++;
2738 }
2739 }
2740 }
b9671574 2741 if (track->GetESDtrack()->GetTPCsignal()>85){
2742 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2743 if (ratio<0.5) {
2744 chi2+=(0.5-ratio)*5.;
2745 }
2746 if (ratio>2){
2747 chi2+=(ratio-2.0)*3;
2748 }
2749 }
2750 //
b9671574 2751 Double_t match = TMath::Sqrt(track->GetChi22());
2752 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2753 if (!track->GetConstrain()) {
2754 if (track->GetNumberOfClusters()>2) {
2755 match/=track->GetNumberOfClusters()-2.;
2756 } else {
2757 match=0;
2758 }
2759 }
e43c066c 2760 if (match<0) match=0;
f8720bda 2761
2762 // penalty factor for missing points (NDeadZone>0), but no penalty
2763 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2764 // or there is a dead from OCDB)
2765 Float_t deadzonefactor = 0.;
2766 if (track->GetNDeadZone()>0.) {
bf1cd124 2767 Int_t sumDeadZoneProbability=0;
2768 for(Int_t ilay=0;ilay<6;ilay++) {
2769 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2770 }
2771 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2772 if(nDeadZoneWithProbNot1>0) {
2773 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2774 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2775 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2776 Float_t one = 1.;
2777 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2778 deadzonefactor = 3.*(1.1-deadZoneProbability);
2779 }
2780 }
2781
b9671574 2782 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2783 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2784 1./(1.+track->GetNSkipped()));
a5a317a9 2785 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2786 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2787 return normchi2;
e43c066c 2788}
44347160 2789//------------------------------------------------------------------------
a70ed6ad 2790Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2791{
2792 //
2793 // return matching chi2 between two tracks
d1181f10 2794 Double_t largeChi2=1000.;
2795
15dd636f 2796 AliITStrackMI track3(*track2);
d1181f10 2797 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2798 TMatrixD vec(5,1);
6c94f330 2799 vec(0,0)=track1->GetY() - track3.GetY();
2800 vec(1,0)=track1->GetZ() - track3.GetZ();
2801 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2802 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2803 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2804 //
2805 TMatrixD cov(5,5);
6c94f330 2806 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2807 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2808 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2809 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2810 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2811
6c94f330 2812 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2813 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2814 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2815 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2816 //
6c94f330 2817 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2818 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2819 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2820 //
6c94f330 2821 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2822 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2823 //
6c94f330 2824 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2825
2826 cov.Invert();
2827 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2828 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2829 return chi2(0,0);
2830}
44347160 2831//------------------------------------------------------------------------
a70ed6ad 2832Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2833{
2834 //
afd25725 2835 // return probability that given point (characterized by z position and error)
2836 // is in SPD dead zone
bf1cd124 2837 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2838 //
afd25725 2839 Double_t probability = 0.;
bf1cd124 2840 Double_t nearestz = 0.,distz=0.;
2841 Int_t nearestzone = -1;
2842 Double_t mindistz = 1000.;
2843
2844 // find closest dead zone
2845 for (Int_t i=0; i<3; i++) {
2846 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2847 if (distz<mindistz) {
2848 nearestzone=i;
2849 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2850 mindistz=distz;
2851 }
2852 }
2853
2854 // too far from dead zone
2855 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2856
2857
afd25725 2858 Double_t zmin, zmax;
bf1cd124 2859 if (nearestzone==0) { // dead zone at z = -7
e50912db 2860 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2861 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2862 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2863 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2864 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2865 } else if (nearestzone==2) { // dead zone at z = +7
2866 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2867 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2868 } else {
2869 zmin = 0.;
2870 zmax = 0.;
e43c066c 2871 }
afd25725 2872 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2873 // dead zone)
bb7e41dd 2874 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2875 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2876 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2877 return probability;
2878}
44347160 2879//------------------------------------------------------------------------
a70ed6ad 2880Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2881{
2882 //
2883 // calculate normalized chi2
2884 Float_t chi2[6];
2885 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2886 Float_t ncl = 0;
2887 for (Int_t i = 0;i<6;i++){
b9671574 2888 if (TMath::Abs(track->GetDy(i))>0){
2889 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2890 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2891 ncl++;
2892 }
2893 else{chi2[i]=10000;}
2894 }
2895 Int_t index[6];
2896 TMath::Sort(6,chi2,index,kFALSE);
2897 Float_t max = float(ncl)*fac-1.;
2898 Float_t sumchi=0, sumweight=0;
2899 for (Int_t i=0;i<max+1;i++){
2900 Float_t weight = (i<max)?1.:(max+1.-i);
2901 sumchi+=weight*chi2[index[i]];
2902 sumweight+=weight;
2903 }
2904 Double_t normchi2 = sumchi/sumweight;
2905 return normchi2;
2906}
44347160 2907//------------------------------------------------------------------------
a70ed6ad 2908Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2909{
2910 //
2911 // calculate normalized chi2
2912 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2913 Int_t npoints = 0;
2914 Double_t res =0;
2915 for (Int_t i=0;i<6;i++){
b9671574 2916 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2917 Double_t sy1 = forwardtrack->GetSigmaY(i);
2918 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2919 Double_t sy2 = backtrack->GetSigmaY(i);
2920 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2921 if (i<2){ sy2=1000.;sz2=1000;}
2922 //
b9671574 2923 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2924 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2925 //
2926 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2927 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2928 //
2929 res+= nz0*nz0+ny0*ny0;
2930 npoints++;
2931 }
2932 if (npoints>1) return
6c23ffed 2933 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2934 //2*forwardtrack->fNUsed+
b9671574 2935 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2936 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2937 return 1000;
2938}
44347160 2939//------------------------------------------------------------------------
e43c066c 2940Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2941 //--------------------------------------------------------------------
2942 // Return pointer to a given cluster
2943 //--------------------------------------------------------------------
2944 Int_t l=(index & 0xf0000000) >> 28;
2945 Int_t c=(index & 0x0fffffff) >> 00;
2946 return fgLayers[l].GetWeight(c);
2947}
44347160 2948//------------------------------------------------------------------------
a70ed6ad 2949void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2950{
2951 //---------------------------------------------
2952 // register track to the list
628e7bb0 2953 //
b9671574 2954 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2955 //
2956 //
e43c066c 2957 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2958 Int_t index = track->GetClusterIndex(icluster);
2959 Int_t l=(index & 0xf0000000) >> 28;
2960 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2961 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2962 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2963 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2964 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2965 break;
2966 }
2967 }
2968 }
2969}
44347160 2970//------------------------------------------------------------------------
a70ed6ad 2971void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2972{
2973 //---------------------------------------------
2974 // unregister track from the list
2975 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2976 Int_t index = track->GetClusterIndex(icluster);
2977 Int_t l=(index & 0xf0000000) >> 28;
2978 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2979 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2980 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2981 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2982 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2983 }
2984 }
2985 }
2986}
44347160 2987//------------------------------------------------------------------------
00a7cc50 2988Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2989{
2990 //-------------------------------------------------------------
2991 //get number of shared clusters
2992 //-------------------------------------------------------------
2993 Float_t shared=0;
2994 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2995 // mean number of clusters
2996 Float_t *ny = GetNy(id), *nz = GetNz(id);
2997
2998
2999 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
3000 Int_t index = track->GetClusterIndex(icluster);
3001 Int_t l=(index & 0xf0000000) >> 28;
3002 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 3003 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 3004 // if (ny[l]<1.e-13){
3005 // printf("problem\n");
3006 // }
00a7cc50 3007 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3008 Float_t weight=1;
3009 //
3010 Float_t deltan = 0;
3011 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3012 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3013 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3014 if (l<2 || l>3){
3015 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3016 }
3017 else{
3018 deltan = (cl->GetNz()-nz[l]);
3019 }
3020 if (deltan>2.0) continue; // extended - highly probable shared cluster
3021 weight = 2./TMath::Max(3.+deltan,2.);
3022 //
3023 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 3024 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 3025 list[l]=index;
00a7cc50 3026 clist[l] = (AliITSRecPoint*)GetCluster(index);
25015f7a 3027 track->SetSharedWeight(l,weight);
e43c066c 3028 shared+=weight;
3029 break;
3030 }
3031 }
3032 }
b9671574 3033 track->SetNUsed(shared);
e43c066c 3034 return shared;
3035}
44347160 3036//------------------------------------------------------------------------
a70ed6ad 3037Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 3038{
3039 //
3040 // find first shared track
3041 //
3042 // mean number of clusters
3043 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
3044 //
3045 for (Int_t i=0;i<6;i++) overlist[i]=-1;
3046 Int_t sharedtrack=100000;
3047 Int_t tracks[24],trackindex=0;
3048 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
3049 //
3050 for (Int_t icluster=0;icluster<6;icluster++){
3051 if (clusterlist[icluster]<0) continue;
3052 Int_t index = clusterlist[icluster];
3053 Int_t l=(index & 0xf0000000) >> 28;
3054 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 3055 // if (ny[l]<1.e-13){
3056 // printf("problem\n");
3057 // }
b9671574 3058 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 3059 //if (l>3) continue;
00a7cc50 3060 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3061 //
3062 Float_t deltan = 0;
3063 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3064 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3065 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3066 if (l<2 || l>3){
3067 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3068 }
3069 else{
3070 deltan = (cl->GetNz()-nz[l]);
3071 }
3072 if (deltan>2.0) continue; // extended - highly probable shared cluster
3073 //
3074 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3075 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3076 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
3077 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 3078 trackindex++;
3079 }
3080 }
3081 }
3082 if (trackindex==0) return -1;
3083 if (trackindex==1){
3084 sharedtrack = tracks[0];
3085 }else{
3086 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
3087 else{
3088 //
a5d0fae6 3089 Int_t tracks2[24], cluster[24];
a6173ccd 3090 for (Int_t i=0;i<24;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 3091 Int_t index =0;
3092 //
3093 for (Int_t i=0;i<trackindex;i++){
3094 if (tracks[i]<0) continue;
a5d0fae6 3095 tracks2[index] = tracks[i];
e43c066c 3096 cluster[index]++;
3097 for (Int_t j=i+1;j<trackindex;j++){
3098 if (tracks[j]<0) continue;
3099 if (tracks[j]==tracks[i]){
3100 cluster[index]++;
3101 tracks[j]=-1;
3102 }
3103 }
3104 index++;
3105 }
3106 Int_t max=0;
3107 for (Int_t i=0;i<index;i++){
3108 if (cluster[index]>max) {
a5d0fae6 3109 sharedtrack=tracks2[index];
e43c066c 3110 max=cluster[index];
3111 }
3112 }
3113 }
3114 }
3115
3116 if (sharedtrack>=100000) return -1;
3117 //
3118 // make list of overlaps
3119 shared =0;
3120 for (Int_t icluster=0;icluster<6;icluster++){
3121 if (clusterlist[icluster]<0) continue;
3122 Int_t index = clusterlist[icluster];
3123 Int_t l=(index & 0xf0000000) >> 28;
3124 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 3125 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 3126 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3127 if (l==0 || l==1){
3128 if (cl->GetNy()>2) continue;
3129 if (cl->GetNz()>2) continue;
3130 }
3131 if (l==4 || l==5){
3132 if (cl->GetNy()>3) continue;
3133 if (cl->GetNz()>3) continue;
3134 }
3135 //
3136 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3137 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3138 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 3139 overlist[l]=index;
3140 shared++;
3141 }
3142 }
3143 }
3144 return sharedtrack;
3145}
44347160 3146//------------------------------------------------------------------------
04315dad 3147AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1,AliITStrackMI* original){
e43c066c 3148 //
3149 // try to find track hypothesys without conflicts
3150 // with minimal chi2;
3151 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
3152 Int_t entries1 = arr1->GetEntriesFast();
3153 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 3154 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3155 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 3156 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3157 //
15dd636f 3158 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
3159 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 3160 if (track10->Pt()>0.5+track20->Pt()) return track10;
a4354152 3161 //
e43c066c 3162 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3163 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3164 UnRegisterClusterTracks(track,trackID1);
3165 }
3166 //
3167 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3168 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3169 UnRegisterClusterTracks(track,trackID2);
3170 }
3171 Int_t index1=0;
3172 Int_t index2=0;
3173 Float_t maxconflicts=6;
3174 Double_t maxchi2 =1000.;
3175 //
3176 // get weight of hypothesys - using best hypothesy
3177 Double_t w1,w2;
3178
3179 Int_t list1[6],list2[6];
00a7cc50 3180 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 3181 RegisterClusterTracks(track10,trackID1);
3182 RegisterClusterTracks(track20,trackID2);
3183 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
3184 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
3185 UnRegisterClusterTracks(track10,trackID1);
3186 UnRegisterClusterTracks(track20,trackID2);
3187 //
3188 // normalized chi2
3189 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
3190 Float_t nerry[6],nerrz[6];
3191 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
3192 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
3193 for (Int_t i=0;i<6;i++){
3194 if ( (erry1[i]>0) && (erry2[i]>0)) {
3195 nerry[i] = TMath::Min(erry1[i],erry2[i]);
3196 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
3197 }else{
3198 nerry[i] = TMath::Max(erry1[i],erry2[i]);
3199 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
3200 }
b9671574 3201 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
3202 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
3203 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3204 ncl1++;
3205 }
b9671574 3206 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
3207 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
3208 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3209 ncl2++;
3210 }
3211 }
3212 chi21/=ncl1;
3213 chi22/=ncl2;
3214 //
3215 //
b9671574 3216 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
3217 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 3218 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3219 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3220 //
3221 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3222 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 3223 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3224 );
3225 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3226 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 3227 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3228 );
3229
3230 Double_t sumw = w1+w2;
3231 w1/=sumw;
3232 w2/=sumw;
3233 if (w1<w2*0.5) {
3234 w1 = (d2+0.5)/(d1+d2+1.);
3235 w2 = (d1+0.5)/(d1+d2+1.);
3236 }
3237 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3238 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3239 //
3240 // get pair of "best" hypothesys
3241 //
3242 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3243 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3244
3245 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3246 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3247 //if (track1->fFakeRatio>0) continue;
3248 RegisterClusterTracks(track1,trackID1);
3249 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3250 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3251
3252 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3253 //if (track2->fFakeRatio>0) continue;
3254 Float_t nskipped=0;
3255 RegisterClusterTracks(track2,trackID2);
e43c066c 3256 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3257 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3258 UnRegisterClusterTracks(track2,trackID2);
3259 //
b9671574 3260 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3261 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3262 if (nskipped>0.5) continue;
3263 //
3264 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3265 if (conflict1+1<cconflict1) continue;
3266 if (conflict2+1<cconflict2) continue;
3267 Float_t conflict=0;
3268 Float_t sumchi2=0;
3269 Float_t sum=0;
3270 for (Int_t i=0;i<6;i++){
3271 //
3272 Float_t c1 =0.; // conflict coeficients
3273 Float_t c2 =0.;
3274 if (clist1[i]&&clist2[i]){
3275 Float_t deltan = 0;
3276 if (i<2 || i>3){
3277 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3278 }
3279 else{
3280 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3281 }
3282 c1 = 2./TMath::Max(3.+deltan,2.);
3283 c2 = 2./TMath::Max(3.+deltan,2.);
3284 }
3285 else{
3286 if (clist1[i]){
3287 Float_t deltan = 0;
3288 if (i<2 || i>3){
3289 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3290 }
3291 else{
3292 deltan = (clist1[i]->GetNz()-nz1[i]);
3293 }
3294 c1 = 2./TMath::Max(3.+deltan,2.);
3295 c2 = 0;
3296 }
3297
3298 if (clist2[i]){
3299 Float_t deltan = 0;
3300 if (i<2 || i>3){
3301 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3302 }
3303 else{
3304 deltan = (clist2[i]->GetNz()-nz2[i]);
3305 }
3306 c2 = 2./TMath::Max(3.+deltan,2.);
3307 c1 = 0;
3308 }
3309 }
3310 //
a5d0fae6 3311 chi21=0;chi22=0;
b9671574 3312 if (TMath::Abs(track1->GetDy(i))>0.) {
3313 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3314 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3315 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3316 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3317 }else{
b9671574 3318 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3319 }
3320 //
b9671574 3321 if (TMath::Abs(track2->GetDy(i))>0.) {
3322 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3323 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3324 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3325 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3326 }
3327 else{
b9671574 3328 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3329 }
3330 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3331 if (chi21>0) sum+=w1;
3332 if (chi22>0) sum+=w2;
3333 conflict+=(c1+c2);
3334 }
b9671574 3335 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3336 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3337 Double_t normchi2 = 2*conflict+sumchi2/sum;
3338 if ( normchi2 <maxchi2 ){
3339 index1 = itrack1;
3340 index2 = itrack2;
3341 maxconflicts = conflict;
3342 maxchi2 = normchi2;
3343 }
3344 }
3345 UnRegisterClusterTracks(track1,trackID1);
3346 }
3347 //
3348 // if (maxconflicts<4 && maxchi2<th0){
3349 if (maxchi2<th0*2.){
b9671574 3350 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3351 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3352 track1->SetChi2MIP(5,maxconflicts);
3353 track1->SetChi2MIP(6,maxchi2);
3354 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3355 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3356 track1->SetChi2MIP(8,index1);
e43c066c 3357 fBestTrackIndex[trackID1] =index1;
3358 UpdateESDtrack(track1, AliESDtrack::kITSin);
04315dad 3359 original->SetWinner(track1);
e43c066c 3360 }
b9671574 3361 else if (track10->GetChi2MIP(0)<th1){
3362 track10->SetChi2MIP(5,maxconflicts);
3363 track10->SetChi2MIP(6,maxchi2);
e43c066c 3364 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3365 UpdateESDtrack(track10,AliESDtrack::kITSin);
04315dad 3366 original->SetWinner(track10);
e43c066c 3367 }
3368
3369 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3370 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3371 UnRegisterClusterTracks(track,trackID1);
3372 }
3373 //
3374 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3375 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3376 UnRegisterClusterTracks(track,trackID2);
3377 }
3378
44347160 3379 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3380 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3381 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3382 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3383 RegisterClusterTracks(track10,trackID1);
3384 }
44347160 3385 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3386 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3387 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3388 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3389 RegisterClusterTracks(track20,trackID2);
3390 }
04315dad 3391 return track10;
e43c066c 3392
3393}
44347160 3394//------------------------------------------------------------------------
e43c066c 3395void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3396 //--------------------------------------------------------------------
3397 // This function marks clusters assigned to the track
3398 //--------------------------------------------------------------------
3399 AliTracker::UseClusters(t,from);
3400
00a7cc50 3401 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3402 //if (c->GetQ()>2) c->Use();
3403 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3404 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3405 //if (c->GetQ()>2) c->Use();
3406 if (c->GetSigmaZ2()>0.1) c->Use();
3407
3408}
44347160 3409//------------------------------------------------------------------------
15dd636f 3410void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3411{
3412 //------------------------------------------------------------------
3413 // add track to the list of hypothesys
3414 //------------------------------------------------------------------
3415
e43c066c 3416 //
3417 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3418 if (!array) {
3419 array = new TObjArray(10);
7034b8af 3420 fTrackHypothesys.AddAtAndExpand(array,esdindex);
e43c066c 3421 }
3422 array->AddLast(track);
3423}
44347160 3424//------------------------------------------------------------------------
e43c066c 3425void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3426{
3427 //-------------------------------------------------------------------
3428 // compress array of track hypothesys
3429 // keep only maxsize best hypothesys
3430 //-------------------------------------------------------------------
3431 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3432 if (! (fTrackHypothesys.At(esdindex)) ) return;
3433 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3434 Int_t entries = array->GetEntriesFast();
3435 //
3436 //- find preliminary besttrack as a reference
04315dad 3437 Float_t minchi2=10000;
e43c066c 3438 Int_t maxn=0;
15dd636f 3439 AliITStrackMI * besttrack=0;
a4354152 3440 //
e43c066c 3441 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3442 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3443 if (!track) continue;
3444 Float_t chi2 = NormalizedChi2(track,0);
3445 //
b9671574 3446 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3447 track->SetLabel(tpcLabel);
3448 CookdEdx(track);
b9671574 3449 track->SetFakeRatio(1.);
e43c066c 3450 CookLabel(track,0.); //For comparison only
3451 //
44347160 3452 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3453 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3454 if (track->GetNumberOfClusters()<maxn) continue;
3455 maxn = track->GetNumberOfClusters();
a4354152 3456 // if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2 *= track->GetChi2MIP(3); // RS
e43c066c 3457 if (chi2<minchi2){
3458 minchi2=chi2;
3459 besttrack=track;
3460 }
3461 }
3462 else{
b9671574 3463 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3464 delete array->RemoveAt(itrack);
3465 }
e43c066c 3466 }
3467 }
3468 if (!besttrack) return;
3469 //
3470 //
3471 //take errors of best track as a reference
3472 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3473 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3474 for (Int_t j=0;j<6;j++) {
9fd412a8 3475 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3476 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3477 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3478 ny[j] = besttrack->GetNy(j);
3479 nz[j] = besttrack->GetNz(j);
e43c066c 3480 }
3481 }
3482 //
3483 // calculate normalized chi2
3484 //
3485 Float_t * chi2 = new Float_t[entries];
3486 Int_t * index = new Int_t[entries];
04315dad 3487 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3488 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3489 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3490 if (track){
a4354152 3491 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3492 double chi2t = GetNormalizedChi2(track, mode);
3493 track->SetChi2MIP(0,chi2t);
3494 if (chi2t<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3495 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3496 chi2[itrack] = chi2t;
3497 }
628e7bb0 3498 else{
b9671574 3499 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3500 delete array->RemoveAt(itrack);
3501 }
3502 }
e43c066c 3503 }
3504 }
3505 //
3506 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3507 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3508 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3509 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3510 for (Int_t j=0;j<6;j++){
9fd412a8 3511 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3512 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3513 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3514 ny[j] = besttrack->GetNy(j);
3515 nz[j] = besttrack->GetNz(j);
e43c066c 3516 }
3517 }
3518 }
3519 //
3520 // calculate one more time with updated normalized errors
04315dad 3521 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3522 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3523 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3524 if (track){
a4354152 3525 double chi2t = GetNormalizedChi2(track, mode);
3526 track->SetChi2MIP(0,chi2t);
bf1cd124 3527 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
a4354152 3528 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3529 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3530 chi2[itrack] = chi2t; //-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3531 }
3532 else {
3533 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3534 delete array->RemoveAt(itrack);
628e7bb0 3535 }
a4354152 3536 }
e43c066c 3537 }
3538 }
3539 entries = array->GetEntriesFast();
3540 //
628e7bb0 3541 //
e43c066c 3542 if (entries>0){
3543 TObjArray * newarray = new TObjArray();
3544 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3545 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3546 if (besttrack){
bf1cd124 3547 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3548 //
a5d0fae6 3549 for (Int_t j=0;j<6;j++){
3550 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3551 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3552 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3553 ny[j] = besttrack->GetNy(j);
3554 nz[j] = besttrack->GetNz(j);
e43c066c 3555 }
3556 }
b9671574 3557 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3558 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3559 Float_t minn = besttrack->GetNumberOfClusters()-3;
3560 Int_t accepted=0;
3561 for (Int_t i=0;i<entries;i++){
15dd636f 3562 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3563 if (!track) continue;
3564 if (accepted>maxcut) break;
b9671574 3565 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3566 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3567 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3568 delete array->RemoveAt(index[i]);
3569 continue;
3570 }
e43c066c 3571 }
b9671574 3572 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3573 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3574 if (!shortbest) accepted++;
e43c066c 3575 //
3576 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3577 for (Int_t j=0;j<6;j++){
3578 if (nz[j]==0){
3579 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3580 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3581 ny[j] = track->GetNy(j);
3582 nz[j] = track->GetNz(j);
e43c066c 3583 }
3584 }
3585 }
3586 else{
3587 delete array->RemoveAt(index[i]);
3588 }
3589 }
3590 array->Delete();
3591 delete fTrackHypothesys.RemoveAt(esdindex);
3592 fTrackHypothesys.AddAt(newarray,esdindex);
3593 }
3594 else{
3595 array->Delete();
3596 delete fTrackHypothesys.RemoveAt(esdindex);
3597 }
3598 }
3599 delete [] chi2;
3600 delete [] index;
3601}
44347160 3602//------------------------------------------------------------------------
15dd636f 3603AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3604{
3605 //-------------------------------------------------------------
3606 // try to find best hypothesy
3607 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
a4354152 3608 // RS: optionally changing this to product of Chi2MIP(0)*Chi2MIP(3) == (chi2*chi2_interpolated)
e43c066c 3609 //-------------------------------------------------------------
3610 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3611 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3612 if (!array) return 0;
3613 Int_t entries = array->GetEntriesFast();
3614 if (!entries) return 0;
04315dad 3615 Float_t minchi2 = 100000;
15dd636f 3616 AliITStrackMI * besttrack=0;
e43c066c 3617 //
15dd636f 3618 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3619 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3620 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3621 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3622 //
3623 for (Int_t i=0;i<entries;i++){
15dd636f 3624 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3625 if (!track) continue;
628e7bb0 3626 Float_t sigmarfi,sigmaz;
3627 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3628 track->SetDnorm(0,sigmarfi);
3629 track->SetDnorm(1,sigmaz);
628e7bb0 3630 //
b9671574 3631 track->SetChi2MIP(1,1000000);
3632 track->SetChi2MIP(2,1000000);
3633 track->SetChi2MIP(3,1000000);
e43c066c 3634 //
3635 // backtrack
15dd636f 3636 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3637 if (track->GetConstrain()) {
e50912db 3638 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
333d86cb 3639 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
a4354152 3640 if (fUseImproveKalman) {if (!backtrack->ImproveKalman(xyzVtx,ersVtx,0,0,0)) continue;}
3641 else {if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;}
333d86cb 3642 }
6c94f330 3643 backtrack->ResetCovariance(10.);
628e7bb0 3644 }else{
6c94f330 3645 backtrack->ResetCovariance(10.);
628e7bb0 3646 }
e43c066c 3647 backtrack->ResetClusters();
628e7bb0 3648
e43c066c 3649 Double_t x = original->GetX();
3650 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3651 //
b9671574 3652 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3653 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3654 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3655 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3656
b9671574 3657 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3658 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3659 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3660
3661
44347160 3662 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3663 //
3664 //forward track - without constraint
15dd636f 3665 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3666 forwardtrack->ResetClusters();
3667 x = track->GetX();
a4354152 3668 if (!RefitAt(x,forwardtrack,track) && fSelectBestMIP03) continue; // w/o fwd track MIP03 is meaningless
b9671574 3669 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3670 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3671 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3672
791f9a2a 3673 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3674 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3675 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3676 forwardtrack->SetD(0,track->GetD(0));
3677 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3678 {
3679 Int_t list[6];
00a7cc50 3680 AliITSRecPoint* clist[6];
b9671574 3681 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3682 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3683 }
3684
b9671574 3685 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3686 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3687 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3688 track->SetChi2MIP(3,1000);
e43c066c 3689 continue;
3690 }
a4354152 3691 Double_t chi2 = track->GetChi2MIP(0); // +track->GetNUsed(); //RS
3692 if (fSelectBestMIP03) chi2 *= track->GetChi2MIP(3);
04315dad 3693 else chi2 += track->GetNUsed();
e43c066c 3694 //
3695 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3696 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3697 }
3698 if (chi2 < minchi2){
15dd636f 3699 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3700 besttrack = track;
e43c066c 3701 besttrack->SetLabel(track->GetLabel());
b9671574 3702 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3703 minchi2 = chi2;
791f9a2a 3704 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3705 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3706 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3707 }
3708 }
3709 delete backtrack;
3710 delete forwardtrack;
9cd19c63 3711
3712 if (!besttrack) return 0;
3713
e43c066c 3714 Int_t accepted=0;
3715 for (Int_t i=0;i<entries;i++){
fddf8459 3716 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3717
e43c066c 3718 if (!track) continue;
628e7bb0 3719
44347160 3720 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
a4354152 3721 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)
3722 // RS: don't apply this cut when fSelectBestMIP03 is on
3723 || (!fSelectBestMIP03 && (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.))
3724 ){
b9671574 3725 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3726 delete array->RemoveAt(i);
3727 continue;
3728 }
e43c066c 3729 }
3730 else{
3731 accepted++;
3732 }
3733 }
3734 //
3735 array->Compress();
3736 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3737
e43c066c 3738 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3739 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3740 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3741 if (!besttrack) return 0;
b9671574 3742 besttrack->SetChi2MIP(8,0);
e43c066c 3743 fBestTrackIndex[esdindex]=0;
3744 entries = array->GetEntriesFast();
15dd636f 3745 AliITStrackMI *longtrack =0;
e43c066c 3746 minchi2 =1000;
b9671574 3747 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3748 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3749 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3750 if (!track->GetConstrain()) continue;
3751 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3752 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3753 if (track->GetChi2MIP(0)>4.) continue;
3754 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3755 longtrack =track;
3756 }
3757 //if (longtrack) besttrack=longtrack;
a4354152 3758 //
3759 // RS do shared cluster analysis here only if the new sharing analysis is not requested
04315dad 3760 //RRR if (fFlagFakes) return besttrack;
e43c066c 3761
3762 Int_t list[6];
00a7cc50 3763 AliITSRecPoint * clist[6];
e43c066c 3764 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3765 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3766 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3767 RegisterClusterTracks(besttrack,esdindex);
3768 }
3769 //
3770 //
3771 if (shared>0.0){
3772 Int_t nshared;
3773 Int_t overlist[6];
3774 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3775 if (sharedtrack>=0){
3776 //
04315dad 3777 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5,original);
e43c066c 3778 if (besttrack){
3779 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3780 }
3781 else return 0;
3782 }
3783 }
3784
3785 if (shared>2.5) return 0;
3786 if (shared>1.0) return besttrack;
3787 //
628e7bb0 3788 // Don't sign clusters if not gold track
3789 //
3790 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3791 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3792 //
e43c066c 3793 if (fConstraint[fPass]){
3794 //
3795 // sign clusters
3796 //
3797 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3798 for (Int_t i=0;i<6;i++){
b9671574 3799 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3800 if (index<0) continue;
e43c066c 3801 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3802 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3803 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3804 if (!c) continue;
3805 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3806 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3807 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3808 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3809 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3810 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3811
3812 Bool_t cansign = kTRUE;
3813 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3814 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3815 if (!track) continue;
b9671574 3816 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3817 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3818 cansign = kFALSE;
3819 break;
3820 }
3821 }
3822 if (cansign){
b9671574 3823 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3824 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3825 if (!c->IsUsed()) c->Use();
3826 }
3827 }
3828 }
3829 return besttrack;
3830}
44347160 3831//------------------------------------------------------------------------
e43c066c 3832void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3833{
3834 //
3835 // get "best" hypothesys
628e7bb0 3836 //
e43c066c 3837
3838 Int_t nentries = itsTracks.GetEntriesFast();
3839 for (Int_t i=0;i<nentries;i++){
15dd636f 3840 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3841 if (!track) continue;
3842 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3843 if (!array) continue;
3844 if (array->GetEntriesFast()<=0) continue;
3845 //
15dd636f 3846 AliITStrackMI* longtrack=0;
e43c066c 3847 Float_t minn=0;
04315dad 3848 Float_t maxchi2=1000;
e43c066c 3849 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3850 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3851 if (!trackHyp) continue;
3852 if (trackHyp->GetGoldV0()) {
3853 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3854 break;
3855 }
a5d0fae6 3856 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3857 Float_t chi2 = trackHyp->GetChi2MIP(0);
a4354152 3858 if (fSelectBestMIP03) chi2 *= trackHyp->GetChi2MIP(3);
3859 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = chi2; //trackHyp->GetChi2MIP(0);
3860 //
3861 if (fAfterV0){ // ??? RS
a5d0fae6 3862 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3863 }
628e7bb0 3864 if (chi2 > maxchi2) continue;
a4354152 3865 minn = trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3866 if (fSelectBestMIP03) minn++; // allow next to longest to win
628e7bb0 3867 maxchi2 = chi2;
a5d0fae6 3868 longtrack=trackHyp;
e43c066c 3869 }
628e7bb0 3870 //
3871 //
3872 //
15dd636f 3873 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3874 if (!longtrack) {longtrack = besttrack;}
3875 else besttrack= longtrack;
628e7bb0 3876 //
afd25725 3877 if (besttrack) {
04315dad 3878 Int_t list[6];
3879 AliITSRecPoint * clist[6];
3880 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3881 //
3882 track->SetNUsed(shared);
b9671574 3883 track->SetNSkipped(besttrack->GetNSkipped());
3884 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
04315dad 3885 if (shared>0) {
3886 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3887 Int_t nshared;
3888 Int_t overlist[6];
e43c066c 3889 //
04315dad 3890 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3891 //if (sharedtrack==-1) sharedtrack=0;
3892 if (sharedtrack>=0) {
3893 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5,track);
3894 }
3895 }
3896 if (besttrack&&fAfterV0) {
628e7bb0 3897 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 3898 track->SetWinner(besttrack);
628e7bb0 3899 }
04315dad 3900 if (besttrack) {
3901 if (fConstraint[fPass]) {
3902 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3903 track->SetWinner(besttrack);
3904 }
3905 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
9cd19c63 3906 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3907 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3908 }
04315dad 3909 }
a4354152 3910 }
e43c066c 3911 }
3912}
a4354152 3913
3914//------------------------------------------------------------------------
a878a855 3915void AliITStrackerMI::FlagFakes(const TObjArray &itsTracks)
a4354152 3916{
3917 //
3918 // RS: flag those tracks which are suxpected to have fake clusters
3919 //
3920 const double kThreshPt = 0.5;
3921 AliRefArray *refArr[6];
3922 //
3923 for (int i=0;i<6;i++) {
3924 int ncl = fgLayers[i].GetNumberOfClusters();
3925 refArr[i] = new AliRefArray(ncl,TMath::Min(ncl,1000));
3926 }
3927 Int_t nentries = itsTracks.GetEntriesFast();
3928 //
3929 // fill cluster->track associations
3930 for (Int_t itr=0;itr<nentries;itr++){
3931 AliITStrackMI* track = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3932 if (!track) continue;
3933 AliITStrackMI* trackITS = track->GetWinner();
3934 if (!trackITS) continue;
3935 for (int il=trackITS->GetNumberOfClusters();il--;) {
3936 int idx = trackITS->GetClusterIndex(il);
3937 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3938 // if (c>fgLayers[l].GetNumberOfClusters()) continue;
3939 refArr[l]->AddReference(c, itr);
3940 }
3941 }
3942 //
3943 const UInt_t kMaxRef = 100;
3944 UInt_t crefs[kMaxRef];
3945 Int_t ncrefs=0;
3946 // process tracks with shared clusters
3947 for (int itr=0;itr<nentries;itr++){
3948 AliITStrackMI* track0 = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3949 AliITStrackMI* trackH0 = track0->GetWinner();
3950 if (!trackH0) continue;
3951 AliESDtrack* esd0 = track0->GetESDtrack();
3952 //
3953 for (int il=0;il<trackH0->GetNumberOfClusters();il++) {
3954 int idx = trackH0->GetClusterIndex(il);
3955 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3956 ncrefs = refArr[l]->GetReferences(c,crefs,kMaxRef);
3957 if (ncrefs<2) continue; // there will be always self-reference, for sharing needs at least 2
3958 esd0->SetITSSharedFlag(l);
3959 for (int ir=ncrefs;ir--;) {
3960 if (int(crefs[ir]) <= itr) continue; // ==:selfreference, <: the same pair will be checked with >
3961 AliITStrackMI* track1 = (AliITStrackMI*)itsTracks.UncheckedAt(crefs[ir]);
3962 AliITStrackMI* trackH1 = track1->GetWinner();
3963 AliESDtrack* esd1 = track1->GetESDtrack();
3964 esd1->SetITSSharedFlag(l);
3965 //
3966 double pt0 = trackH0->Pt(), pt1 = trackH1->Pt(), res = 0.;
3967 if (pt0>kThreshPt && pt0-pt1>0.2+0.2*(pt0-kThreshPt) ) res = -100;
3968 else if (pt1>kThreshPt && pt1-pt0>0.2+0.2*(pt1-kThreshPt) ) res = 100;
3969
3970 // select the one with smallest chi2's product
3971 res += trackH0->GetChi2MIP(0)*trackH0->GetChi2MIP(3);
3972 res -= trackH1->GetChi2MIP(0)*trackH1->GetChi2MIP(3);
3973 //
3974 if (res<0) esd1->SetITSFakeFlag(); // esd0 is winner
3975 else esd0->SetITSFakeFlag(); // esd1 is winner
3976 }
3977 //
3978 }
3979 //
3980 }
3981 //
3982 for (int i=6;i--;) delete refArr[i];
3983}
3984
773dd1f5
MM		 3985
3986
3987//------------------------------------------------------------------------
3988void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
3989 //--------------------------------------------------------------------
3990 //This function "cooks" a track label. If label<0, this track is fake.
3991 //--------------------------------------------------------------------
3992 const int kMaxLbPerCl = 3;
3993 int lbID[36],lbStat[36];
3994 Int_t nLab=0, nCl = track->GetNumberOfClusters();
3995 //
3996 // track->SetLabel(-1);
3997 // track->SetFakeRatio(0);
3998 //
3999 for (Int_t i=0;i<nCl;i++) { // fill all labels
4000 Int_t cindex = track->GetClusterIndex(i);
4001 // Int_t l=(cindex & 0xf0000000) >> 28;
4002 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
4003 //
4004 for (int imc=0;imc<kMaxLbPerCl;imc++) { // labels within single cluster
4005 int trLb = cl->GetLabel(imc);
4006 if (trLb<0) break;
4007 // search this mc track in already accounted ones
4008 int iLab;
4009 for (iLab=0;iLab<nLab;iLab++) if (lbID[iLab]==trLb) break;
4010 if (iLab<nLab) lbStat[iLab]++;
4011 else {
4012 lbID[nLab] = trLb;
4013 lbStat[nLab++] = 1;
4014 }
4015 } // loop over given cluster's labels
4016 } // loop over clusters
4017 //
4018 if (nLab<1) return; // no labels at all
4019 //
4020 Int_t tpcLabel=-1;
4021 if (track->GetESDtrack() && track->GetESDtrack()->IsOn(AliESDtrack::kTPCin)){
4022 tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
4023 }
4024 //
4025 // find majority label
4026 if (nCl && nLab) {
4027 int maxLab=0,tpcLabID=-1;
4028 for (int ilb=nLab;ilb--;) {
4029 int st = lbStat[ilb];
4030 if (lbStat[maxLab]<st) maxLab = ilb;
4031 if (lbID[ilb] == tpcLabel) tpcLabID = ilb;
4032 }
4033 // if there is an equal choice, prefer ITS label consistent with TPC label
4034 if (tpcLabel>0 && (tpcLabID!=maxLab) && lbStat[maxLab]==lbStat[tpcLabID]) maxLab=tpcLabID;
4035
4036 track->SetFakeRatio(1.-float(lbStat[maxLab])/nCl);
4037 track->SetLabel( lbStat[maxLab]>=nCl-wrong ? lbID[maxLab] : -lbID[maxLab]);
4038 }
4039 //
4040}
4041
4042/*
44347160 4043//------------------------------------------------------------------------
15dd636f 4044void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 4045 //--------------------------------------------------------------------
4046 //This function "cooks" a track label. If label<0, this track is fake.
4047 //--------------------------------------------------------------------
4048 Int_t tpcLabel=-1;
4049
d3dbf323 4050 if (track->GetESDtrack()){
4051 tpcLabel = track->GetESDtrack()->GetTPCLabel();
4052 ULong_t trStatus=track->GetESDtrack()->GetStatus();
4053 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
4054 }
b9671574 4055 track->SetChi2MIP(9,0);
e43c066c 4056 Int_t nwrong=0;
4057 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4058 Int_t cindex = track->GetClusterIndex(i);
4059 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 4060 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 4061 Int_t isWrong=1;
4062 for (Int_t ind=0;ind<3;ind++){
84a21804 4063 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 4064 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 4065 }
b9671574 4066 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4067 nwrong+=isWrong;
4068 }
7d43b4c4 4069 Int_t nclusters = track->GetNumberOfClusters();
4070 if (nclusters > 0) //PH Some tracks don't have any cluster
4071 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 4072 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
4073 track->SetLabel(-tpcLabel);
4074 } else {
4075 track->SetLabel(tpcLabel);
e43c066c 4076 }
773dd1f5 4077 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 4078}
773dd1f5
MM		 4079*/
4080
44347160 4081//------------------------------------------------------------------------
88e3c173 4082void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
4083 //
4084 // Fill the dE/dx in this track
e43c066c 4085 //
b9671574 4086 track->SetChi2MIP(9,0);
e43c066c 4087 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4088 Int_t cindex = track->GetClusterIndex(i);
4089 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 4090 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 4091 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 4092 Int_t isWrong=1;
4093 for (Int_t ind=0;ind<3;ind++){
4094 if (cl->GetLabel(ind)==lab) isWrong=0;
4095 }
b9671574 4096 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4097 }
e43c066c 4098 Double_t low=0.;
4099 Double_t up=0.51;
09cf9d66 4100 track->CookdEdx(low,up);
e43c066c 4101}
44347160 4102//------------------------------------------------------------------------
e50912db 4103void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 4104 //
a70ed6ad 4105 // Create some arrays
e43c066c 4106 //
afd25725 4107 if (fCoefficients) delete []fCoefficients;
4108 fCoefficients = new Float_t[ntracks*48];
4109 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 4110}
44347160 4111//------------------------------------------------------------------------
00a7cc50 4112Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 4113{
4114 //
a70ed6ad 4115 // Compute predicted chi2
e43c066c 4116 //
242bd643 4117 // Take into account the mis-alignment (bring track to cluster plane)
4118 Double_t xTrOrig=track->GetX();
4119 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
d9ead1a0 4120 Float_t erry,errz,covyz;
e43c066c 4121 Float_t theta = track->GetTgl();
4122 Float_t phi = track->GetSnp();
242bd643 4123 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 4124 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 4125 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 4126 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 4127 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 4128 // Bring the track back to detector plane in ideal geometry
4129 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 4130 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 4131 Float_t ny,nz;
e50912db 4132 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 4133 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
4134 if (delta>1){
4135 chi2+=0.5*TMath::Min(delta/2,2.);
4136 chi2+=2.*cluster->GetDeltaProbability();
4137 }
4138 //
b9671574 4139 track->SetNy(layer,ny);
4140 track->SetNz(layer,nz);
4141 track->SetSigmaY(layer,erry);
4142 track->SetSigmaZ(layer, errz);
d9ead1a0 4143 track->SetSigmaYZ(layer,covyz);
e43c066c 4144 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 4145 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 4146 return chi2;
4147
4148}
e50912db 4149//------------------------------------------------------------------------
4150Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 4151{
4152 //
a70ed6ad 4153 // Update ITS track
e43c066c 4154 //
4155 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 4156 track->SetClIndex(layer, index);
572f41f9 4157 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
4158 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
4159 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
4160 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
4161 }
e43c066c 4162 }
a504d56f 4163
88e3c173 4164 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 4165
afd25725 4166
1c97ce2f 4167 // Take into account the mis-alignment (bring track to cluster plane)
4168 Double_t xTrOrig=track->GetX();
4187a601 4169 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
4170 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
4171 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
4172 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 4173
9be1d1c7 4174 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 4175
150f264c 4176 AliCluster c(*cl);
4177 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
4178 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 4179 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 4180
1c97ce2f 4181
4182 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 4183 // Bring the track back to detector plane in ideal geometry
9be1d1c7 4184 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 4185
4187a601 4186 if(!updated) AliDebug(2,"update failed");
1c97ce2f 4187 return updated;
e43c066c 4188}
150f264c 4189
44347160 4190//------------------------------------------------------------------------
a70ed6ad 4191void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 4192{
4193 //
4194 //DCA sigmas parameterization
4195 //to be paramterized using external parameters in future
4196 //
4197 //
63126a46 4198 Double_t curv=track->GetC();
4199 sigmarfi = 0.0040+1.4 *TMath::Abs(curv)+332.*curv*curv;
4200 sigmaz = 0.0110+4.37*TMath::Abs(curv);
628e7bb0 4201}
e50912db 4202//------------------------------------------------------------------------
a70ed6ad 4203void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 4204{
4205 //
a70ed6ad 4206 // Clusters from delta electrons?
e43c066c 4207 //
a70ed6ad 4208 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 4209 if (entries<4) return;
a70ed6ad 4210 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 4211 Int_t layer = cluster->GetLayer();
4212 if (layer>1) return;
4213 Int_t index[10000];
4214 Int_t ncandidates=0;
4215 Float_t r = (layer>0)? 7:4;
4216 //
4217 for (Int_t i=0;i<entries;i++){
a70ed6ad 4218 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 4219 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
4220 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
4221 index[ncandidates] = i; //candidate to belong to delta electron track
4222 ncandidates++;
4223 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
4224 cl0->SetDeltaProbability(1);
4225 }
4226 }
4227 //
4228 //
4229 //
4230 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 4231 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 4232 if (cl0->GetDeltaProbability()>0.8) continue;
4233 //
4234 Int_t ncl = 0;
4235 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
4236 sumy=sumz=sumy2=sumyz=sumw=0.0;
4237 for (Int_t j=0;j<ncandidates;j++){
4238 if (i==j) continue;
a70ed6ad 4239 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 4240 //
4241 Float_t dz = cl0->GetZ()-cl1->GetZ();
4242 Float_t dy = cl0->GetY()-cl1->GetY();
4243 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
4244 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
4245 y[ncl] = cl1->GetY();
4246 z[ncl] = cl1->GetZ();
4247 sumy+= y[ncl]*weight;
4248 sumz+= z[ncl]*weight;
4249 sumy2+=y[ncl]*y[ncl]*weight;
4250 sumyz+=y[ncl]*z[ncl]*weight;
4251 sumw+=weight;
4252 ncl++;
4253 }
4254 }
4255 if (ncl<4) continue;
4256 Float_t det = sumw*sumy2 - sumy*sumy;
4257 Float_t delta=1000;
4258 if (TMath::Abs(det)>0.01){
4259 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
4260 Float_t k = (sumyz*sumw - sumy*sumz)/det;
4261 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
4262 }
4263 else{
4264 Float_t z0 = sumyz/sumy;
4265 delta = TMath::Abs(cl0->GetZ()-z0);
4266 }
4267 if ( delta<0.05) {
4268 cl0->SetDeltaProbability(1-20.*delta);
4269 }
4270 }
4271}
44347160 4272//------------------------------------------------------------------------
15dd636f 4273void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 4274{
4275 //
a70ed6ad 4276 // Update ESD track
e43c066c 4277 //
4278 track->UpdateESDtrack(flags);
b9671574 4279 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
ddfbc51a 4280 if (oldtrack) delete oldtrack;
4281 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
4282 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
4283 // printf("Problem\n");
4284 // }
e43c066c 4285}
44347160 4286//------------------------------------------------------------------------
81e97e0d 4287Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
4288 //
ae00569a 4289 // Get nearest upper layer close to the point xr.
81e97e0d 4290 // rough approximation
4291 //
bf6adc12 4292 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 4293 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
4294 Int_t res =6;
4295 for (Int_t i=0;i<6;i++){
bf6adc12 4296 if (radius<kRadiuses[i]){
81e97e0d 4297 res =i;
4298 break;
4299 }
4300 }
4301 return res;
4302}
44347160 4303//------------------------------------------------------------------------
e50912db 4304void AliITStrackerMI::BuildMaterialLUT(TString material) {
4305 //--------------------------------------------------------------------
4306 // Fill a look-up table with mean material
4307 //--------------------------------------------------------------------
4308
4309 Int_t n=1000;
4310 Double_t mparam[7];
4311 Double_t point1[3],point2[3];
4312 Double_t phi,cosphi,sinphi,z;
4313 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 4314 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
4315 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 4316
4317 Int_t ifirst=0,ilast=0;
4318 if(material.Contains("Pipe")) {
4319 ifirst=6; ilast=6;
4320 } else if(material.Contains("Shields")) {
4321 ifirst=7; ilast=8;
4322 } else if(material.Contains("Layers")) {
4323 ifirst=0; ilast=5;
4324 } else {
4325 Error("BuildMaterialLUT","Wrong layer name\n");
4326 }
fc2001b4 4327 const double kAngEps = 1e-4; // tiny slope to avoid tracks strictly normal to Z axis
e50912db 4328 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4329 Double_t param[5]={0.,0.,0.,0.,0.};
4330 for (Int_t i=0; i<n; i++) {
4331 phi = 2.*TMath::Pi()*gRandom->Rndm();
4332 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4333 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4334 point1[0] = rmin[imat]*cosphi;
4335 point1[1] = rmin[imat]*sinphi;
4336 point1[2] = z;
4337 point2[0] = rmax[imat]*cosphi;
4338 point2[1] = rmax[imat]*sinphi;
fc2001b4 4339 point2[2] = z+(rmax[imat]-rmin[imat])*kAngEps;
e50912db 4340 AliTracker::MeanMaterialBudget(point1,point2,mparam);
fc2001b4 4341 if (mparam[1]>999) {n--; continue;} // skip anomalous values in failed propagation
e50912db 4342 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4343 }
4344 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4345 if(imat<=5) {
4346 fxOverX0Layer[imat] = param[1];
4347 fxTimesRhoLayer[imat] = param[0]*param[4];
4348 } else if(imat==6) {
4349 fxOverX0Pipe = param[1];
4350 fxTimesRhoPipe = param[0]*param[4];
4351 } else if(imat==7) {
4352 fxOverX0Shield[0] = param[1];
4353 fxTimesRhoShield[0] = param[0]*param[4];
4354 } else if(imat==8) {
4355 fxOverX0Shield[1] = param[1];
4356 fxTimesRhoShield[1] = param[0]*param[4];
4357 }
4358 }
4359 /*
4360 printf("%s\n",material.Data());
4361 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4362 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4363 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4364 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4365 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4366 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4367 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4368 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4369 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4370 */
4371 return;
4372}
4373//------------------------------------------------------------------------
4374Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4375 TString direction) {
4376 //-------------------------------------------------------------------
4377 // Propagate beyond beam pipe and correct for material
4378 // (material budget in different ways according to fUseTGeo value)
7131593b 4379 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4380 //-------------------------------------------------------------------
4381
4382 // Define budget mode:
4383 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4384 // 1: material from TGeo in one step (on the fly)
e50912db 4385 // 2: material from lut
9be1d1c7 4386 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4387 Int_t mode;
4388 switch(fUseTGeo) {
4389 case 0:
4390 mode=0;
4391 break;
4392 case 1:
4393 mode=1;
4394 break;
4395 case 2:
4396 mode=2;
4397 break;
4398 case 3:
4399 if(fTrackingPhase.Contains("Clusters2Tracks"))
4400 { mode=3; } else { mode=1; }
4401 break;
4402 case 4:
4403 if(fTrackingPhase.Contains("Clusters2Tracks"))
4404 { mode=3; } else { mode=2; }
4405 break;
4406 default:
4407 mode=0;
4408 break;
4409 }
4410 if(fTrackingPhase.Contains("Default")) mode=0;
4411
4412 Int_t index=fCurrentEsdTrack;
4413
4414 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4415 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4416 Double_t xToGo;
4417 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4418
4419 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4420
4421 switch(mode) {
4422 case 0:
4423 xOverX0 = AliITSRecoParam::GetdPipe();
4424 x0 = AliITSRecoParam::GetX0Be();
4425 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4426 lengthTimesMeanDensity *= dir;
7131593b 4427 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4428 break;
4429 case 1:
4430 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4431 break;
4432 case 2:
4433 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4434 xOverX0 = fxOverX0Pipe;
4435 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4436 lengthTimesMeanDensity *= dir;
7131593b 4437 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4438 break;
4439 case 3:
4440 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4441 if(fxOverX0PipeTrks[index]<0) {
4442 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4443 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4444 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4445 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4446 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4447 return 1;
4448 }
4449 xOverX0 = fxOverX0PipeTrks[index];
4450 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4451 lengthTimesMeanDensity *= dir;
7131593b 4452 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4453 break;
4454 }
4455
e50912db 4456 return 1;
4457}
4458//------------------------------------------------------------------------
4459Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4460 TString shield,
4461 TString direction) {
4462 //-------------------------------------------------------------------
4463 // Propagate beyond SPD or SDD shield and correct for material
4464 // (material budget in different ways according to fUseTGeo value)
7131593b 4465 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4466 //-------------------------------------------------------------------
4467
4468 // Define budget mode:
4469 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4470 // 1: material from TGeo in steps of X cm (on the fly)
4471 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4472 // 2: material from lut
9be1d1c7 4473 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4474 Int_t mode;
4475 switch(fUseTGeo) {
4476 case 0:
4477 mode=0;
4478 break;
4479 case 1:
4480 mode=1;
4481 break;
4482 case 2:
4483 mode=2;
4484 break;
4485 case 3:
4486 if(fTrackingPhase.Contains("Clusters2Tracks"))
4487 { mode=3; } else { mode=1; }
4488 break;
4489 case 4:
4490 if(fTrackingPhase.Contains("Clusters2Tracks"))
4491 { mode=3; } else { mode=2; }
4492 break;
4493 default:
4494 mode=0;
4495 break;
4496 }
4497 if(fTrackingPhase.Contains("Default")) mode=0;
4498
4499 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4500 Double_t rToGo;
4501 Int_t shieldindex=0;
4502 if (shield.Contains("SDD")) { // SDDouter
4503 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4504 shieldindex=1;
4505 } else if (shield.Contains("SPD")) { // SPDouter
4506 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4507 shieldindex=0;
4508 } else {
4509 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4510 return 0;
4511 }
67178f34 4512
4513 // do nothing if we are already beyond the shield
4514 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4515 if(dir<0 && rTrack > rToGo) return 1; // going outward
4516 if(dir>0 && rTrack < rToGo) return 1; // going inward
4517
4518
70e83b26 4519 Double_t xToGo;
4520 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4521
4522 Int_t index=2*fCurrentEsdTrack+shieldindex;
4523
4524 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4525 Int_t nsteps=1;
e50912db 4526
4527 switch(mode) {
4528 case 0:
4529 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4530 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4531 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4532 lengthTimesMeanDensity *= dir;
7131593b 4533 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4534 break;
4535 case 1:
9be1d1c7 4536 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4537 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4538 break;
4539 case 2:
4540 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4541 xOverX0 = fxOverX0Shield[shieldindex];
4542 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4543 lengthTimesMeanDensity *= dir;
7131593b 4544 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4545 break;
4546 case 3:
4547 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4548 if(fxOverX0ShieldTrks[index]<0) {
4549 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4550 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4551 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4552 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4553 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4554 return 1;
4555 }
4556 xOverX0 = fxOverX0ShieldTrks[index];
4557 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4558 lengthTimesMeanDensity *= dir;
7131593b 4559 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4560 break;
4561 }
4562
e50912db 4563 return 1;
4564}
4565//------------------------------------------------------------------------
4566Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4567 Int_t layerindex,
4568 Double_t oldGlobXYZ[3],
4569 TString direction) {
4570 //-------------------------------------------------------------------
4571 // Propagate beyond layer and correct for material
4572 // (material budget in different ways according to fUseTGeo value)
7131593b 4573 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4574 //-------------------------------------------------------------------
4575
4576 // Define budget mode:
4577 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4578 // 1: material from TGeo in stepsof X cm (on the fly)
4579 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4580 // 2: material from lut
9be1d1c7 4581 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4582 Int_t mode;
4583 switch(fUseTGeo) {
4584 case 0:
4585 mode=0;
4586 break;
4587 case 1:
4588 mode=1;
4589 break;
4590 case 2:
4591 mode=2;
4592 break;
4593 case 3:
4594 if(fTrackingPhase.Contains("Clusters2Tracks"))
4595 { mode=3; } else { mode=1; }
4596 break;
4597 case 4:
4598 if(fTrackingPhase.Contains("Clusters2Tracks"))
4599 { mode=3; } else { mode=2; }
4600 break;
4601 default:
4602 mode=0;
4603 break;
4604 }
4605 if(fTrackingPhase.Contains("Default")) mode=0;
4606
4607 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4608
4609 Double_t r=fgLayers[layerindex].GetR();
4610 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4611
4612 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4613 Double_t xToGo;
4614 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4615
4616 Int_t index=6*fCurrentEsdTrack+layerindex;
4617
e50912db 4618
4619 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4620 Int_t nsteps=1;
7131593b 4621
4622 // back before material (no correction)
d634c32b 4623 Double_t rOld,xOld;
7131593b 4624 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4625 if (!t->GetLocalXat(rOld,xOld)) return 0;
4626 if (!t->Propagate(xOld)) return 0;
e50912db 4627
4628 switch(mode) {
4629 case 0:
4630 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4631 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4632 lengthTimesMeanDensity *= dir;
7131593b 4633 // Bring the track beyond the material
4634 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4635 break;
4636 case 1:
9be1d1c7 4637 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4638 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4639 break;
4640 case 2:
4641 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4642 xOverX0 = fxOverX0Layer[layerindex];
4643 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4644 lengthTimesMeanDensity *= dir;
7131593b 4645 // Bring the track beyond the material
4646 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4647 break;
4648 case 3:
4649 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4650 if(fxOverX0LayerTrks[index]<0) {
4651 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4652 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4653 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4654 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4655 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4656 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4657 return 1;
e50912db 4658 }
4659 xOverX0 = fxOverX0LayerTrks[index];
4660 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4661 lengthTimesMeanDensity *= dir;
7131593b 4662 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4663 break;
4664 }
4665
7131593b 4666
e50912db 4667 return 1;
4668}
4669//------------------------------------------------------------------------
4670void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4671 //-----------------------------------------------------------------
4672 // Initialize LUT for storing material for each prolonged track
4673 //-----------------------------------------------------------------
4674 fxOverX0PipeTrks = new Float_t[ntracks];
4675 fxTimesRhoPipeTrks = new Float_t[ntracks];
4676 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4677 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4678 fxOverX0LayerTrks = new Float_t[ntracks*6];
4679 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4680
4681 for(Int_t i=0; i<ntracks; i++) {
4682 fxOverX0PipeTrks[i] = -1.;
4683 fxTimesRhoPipeTrks[i] = -1.;
4684 }
4685 for(Int_t j=0; j<ntracks*2; j++) {
4686 fxOverX0ShieldTrks[j] = -1.;
4687 fxTimesRhoShieldTrks[j] = -1.;
4688 }
4689 for(Int_t k=0; k<ntracks*6; k++) {
4690 fxOverX0LayerTrks[k] = -1.;
4691 fxTimesRhoLayerTrks[k] = -1.;
4692 }
4693
4694 fNtracks = ntracks;
4695
4696 return;
4697}
4698//------------------------------------------------------------------------
4699void AliITStrackerMI::DeleteTrksMaterialLUT() {
4700 //-----------------------------------------------------------------
4701 // Delete LUT for storing material for each prolonged track
4702 //-----------------------------------------------------------------
4703 if(fxOverX0PipeTrks) {
4704 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4705 }
4706 if(fxOverX0ShieldTrks) {
4707 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4708 }
4709
4710 if(fxOverX0LayerTrks) {
4711 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4712 }
4713 if(fxTimesRhoPipeTrks) {
4714 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4715 }
4716 if(fxTimesRhoShieldTrks) {
4717 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4718 }
4719 if(fxTimesRhoLayerTrks) {
4720 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4721 }
4722 return;
4723}
4724//------------------------------------------------------------------------
4fa7f7d1 4725void AliITStrackerMI::SetForceSkippingOfLayer() {
4726 //-----------------------------------------------------------------
4727 // Check if we are forced to skip layers
4728 // either we set to skip them in RecoParam
4729 // or they were off during data-taking
4730 //-----------------------------------------------------------------
4731
4732 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4733
4fa7f7d1 4734 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4735 fForceSkippingOfLayer[l] = 0;
4736 // check reco param
4737 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4738 // check run info
4739
87b4605f 4740 if(eventInfo &&
4741 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4742 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4743 if(l==0 || l==1) {
4744 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4745 } else if(l==2 || l==3) {
4746 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4747 } else {
4748 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4749 }
4750 }
4751 }
4752 return;
4753}
4754//------------------------------------------------------------------------
a70ed6ad 4755Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4756 Int_t ilayer,Int_t idet) const {
2755f080 4757 //-----------------------------------------------------------------
4758 // This method is used to decide whether to allow a prolongation
4759 // without clusters, because we want to skip the layer.
4760 // In this case the return value is > 0:
4761 // return 1: the user requested to skip a layer
371164ec 4762 // return 2: track outside z acceptance
2755f080 4763 //-----------------------------------------------------------------
e43c066c 4764
4fa7f7d1 4765 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4766
371164ec 4767 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4768
4769 if (idet<0 && // out in z
4770 ilayer>innerLayCanSkip &&
4771 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4772 // check if track will cross SPD outer layer
4773 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4774 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4775 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4776 }
371164ec 4777 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4778 }
51ad6848 4779
2755f080 4780 return 0;
4781}
4782//------------------------------------------------------------------------
23197852 4783Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4784 Int_t ilayer,Int_t idet,
1c97ce2f 4785 Double_t dz,Double_t dy,
23197852 4786 Bool_t noClusters) const {
6518a6c5 4787 //-----------------------------------------------------------------
4788 // This method is used to decide whether to allow a prolongation
ae00569a 4789 // without clusters, because there is a dead zone in the road.
6518a6c5 4790 // In this case the return value is > 0:
4791 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4792 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4793 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4794 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4795 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4796 //-----------------------------------------------------------------
4797
4798 // check dead zones at z=0,+-7cm in the SPD
4799 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4800 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4801 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4802 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4803 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4804 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4805 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4806 for (Int_t i=0; i<3; i++)
4187a601 4807 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4808 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4809 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4810 }
6518a6c5 4811 }
4812
23197852 4813 // check bad zones from OCDB
4814 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4815
23197852 4816 if (idet<0) return 0;
ae00569a 4817
23197852 4818 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4819
23197852 4820 Int_t detType=-1;
4821 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4822 if (ilayer==0 || ilayer==1) { // ---------- SPD
4823 detType = 0;
4824 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4825 detType = 1;
4826 detSizeFactorX *= 2.;
4827 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4828 detType = 2;
4829 }
a70ed6ad 4830 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4831 if (detType==2) segm->SetLayer(ilayer+1);
4832 Float_t detSizeX = detSizeFactorX*segm->Dx();
4833 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4834
4835 // check if the road overlaps with bad chips
4836 Float_t xloc,zloc;
e9b15b0c 4837 if(!(LocalModuleCoord(ilayer,idet,track,xloc,zloc)))return 0;
1c97ce2f 4838 Float_t zlocmin = zloc-dz;
4839 Float_t zlocmax = zloc+dz;
4840 Float_t xlocmin = xloc-dy;
4841 Float_t xlocmax = xloc+dy;
23197852 4842 Int_t chipsInRoad[100];
4843
4187a601 4844 // check if road goes out of detector
4845 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4846 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4847 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4848 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4849 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4850 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));
4851
4852 // check if this detector is bad
4853 if (det.IsBad()) {
4854 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4855 if(!touchNeighbourDet) {
4856 return 2; // all detectors in road are bad
4857 } else {
4858 return 3; // at least one is bad
4859 }
4860 }
4861
5d1c3df8 4862 if(zlocmin>zlocmax)return 0;
23197852 4863 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4864 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4865 if (!nChipsInRoad) return 0;
4866
4867 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4868 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4869 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4870 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4871 if (det.IsChipBad(chipsInRoad[iCh])) {
4872 anyBad=kTRUE;
4873 } else {
4874 anyGood=kTRUE;
4875 }
6518a6c5 4876 }
4877
4187a601 4878 if (!anyGood) {
4879 if(!touchNeighbourDet) {
4880 AliDebug(2,"all bad in road");
4881 return 2; // all chips in road are bad
4882 } else {
4883 return 3; // at least a bad chip in road
4884 }
4885 }
23197852 4886
4187a601 4887 if (anyBad) {
4888 AliDebug(2,"at least a bad in road");
4889 return 3; // at least a bad chip in road
4890 }
23197852 4891
4892
4893 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4894 || !noClusters) return 0;
4895
4896 // There are no clusters in road: check if there is at least
6a0fdcbd 4897 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4898
4187a601 4899 Int_t idetInITS=idet;
4900 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4901
4187a601 4902 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4903 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4904 return 4;
4187a601 4905 }
4906 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4907
6518a6c5 4908 return 0;
4909}
4910//------------------------------------------------------------------------
ae00569a 4911Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4912 const AliITStrackMI *track,
ae00569a 4913 Float_t &xloc,Float_t &zloc) const {
4914 //-----------------------------------------------------------------
4915 // Gives position of track in local module ref. frame
4916 //-----------------------------------------------------------------
4917
4918 xloc=0.;
4919 zloc=0.;
4920
371164ec 4921 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4922
4923 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4924
4925 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4926
ae00569a 4927 Int_t det = idet - (lad-1)*ndet + 1;
4928
4929 Double_t xyzGlob[3],xyzLoc[3];
4930
1c97ce2f 4931 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4932 // take into account the misalignment: xyz at real detector plane
d1181f10 4933 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4934
d1181f10 4935 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4936
4937 xloc = (Float_t)xyzLoc[0];
4938 zloc = (Float_t)xyzLoc[2];
4939
4940 return kTRUE;
4941}
4942//------------------------------------------------------------------------
879cdb02 4943//------------------------------------------------------------------------
0442469d 4944Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer){
0e91092f 4945//
4946// Method to be optimized further:
4947// Aim: decide whether a track can be used for PlaneEff evaluation
4948// the decision is taken based on the track quality at the layer under study
4949// no information on the clusters on this layer has to be used
4950// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4951// the cut is done on number of sigmas from the boundaries
4952//
4953// Input: Actual track, layer [0,5] under study
4954// Output: none
4955// Return: kTRUE if this is a good track
7167ae53 4956//
4957// it will apply a pre-selection to obtain good quality tracks.
4958// Here also you will have the possibility to put a control on the
4959// impact point of the track on the basic block, in order to exclude border regions
4960// this will be done by calling a proper method of the AliITSPlaneEff class.
4961//
4962// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4963// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4964//
4965 Int_t index[AliITSgeomTGeo::kNLayers];
4966 Int_t k;
4967 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4968 //
4969 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4970 index[k]=clusters[k];
4971 }
4972
0e91092f 4973 if(!fPlaneEff)
a31a139f 4974 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4975 AliITSlayer &layer=fgLayers[ilayer];
4976 Double_t r=layer.GetR();
8a32c4b5 4977 AliITStrackMI tmp(*track);
4978
0ed58a47 4979// require a minimal number of cluster in other layers and eventually clusters in closest layers
f1b15b8d 4980 Int_t nclout=0; Int_t nclin=0;
061c42a0 4981 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
879cdb02 4982 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
0ed58a47 4983 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
f1b15b8d 4984 // if (tmp.GetClIndex(lay)>=0) nclout++;
4985if(index[lay]>=0)nclout++;
0ed58a47 4986 }
061c42a0 4987 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4988 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4989 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
f1b15b8d 4990 if (index[lay]>=0) nclin++;
061c42a0 4991 }
f1b15b8d 4992 Int_t ncl=nclout+nclin;
0ed58a47 4993 Bool_t nextout = kFALSE;
4994 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4995 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4996 Bool_t nextin = kFALSE;
4997 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4998 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4999 // maximum number of missing clusters allowed in outermost layers
f1b15b8d 5000 if(nclout<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
061c42a0 5001 return kFALSE;
5002 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
5003 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 5004 return kFALSE;
5005 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
5006 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
5007 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
5008 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
5009
8a32c4b5 5010// detector number
5011 Double_t phi,z;
5012 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
5013 Int_t idet=layer.FindDetectorIndex(phi,z);
5014 if(idet<0) { AliInfo(Form("cannot find detector"));
5015 return kFALSE;}
5016
5017 // here check if it has good Chi Square.
5018
5019 //propagate to the intersection with the detector plane
5020 const AliITSdetector &det=layer.GetDetector(idet);
5021 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
5022
5023 Float_t locx; //
5024 Float_t locz; //
0e91092f 5025 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 5026 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5027 if(key>fPlaneEff->Nblock()) return kFALSE;
5028 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
5029 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 5030 //***************
0e91092f 5031 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 5032 //
061c42a0 5033 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
5034 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
cff21c12 5035 Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXFromBoundaryPlaneEff();
5036 Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZFromBoundaryPlaneEff();
5037 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
5038 // those are precisions in the tracking reference system
5039 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
5040 // Use it also for the module reference system, as it is done for RecPoints
5041
5042 if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigFrmBndPlaneEff()){
5043 if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) dx -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
5044 else dx -= distx;
5045
5046 if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) dz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
5047 else dz -= distz;
5048 }
8a32c4b5 5049
1c97ce2f 5050 // exclude tracks at boundary between detectors
0e91092f 5051 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 5052 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 5053 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 5054 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
5055 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
0e91092f 5056 if ( (locx-dx < blockXmn+boundaryWidth) ||
5057 (locx+dx > blockXmx-boundaryWidth) ||
5058 (locz-dz < blockZmn+boundaryWidth) ||
5059 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
0442469d 5060
5061 if(ilayer==0){
5062 const AliESDEvent *myesd = ((AliESDtrack*)tmp.GetESDtrack())->GetESDEvent();
5063 //The beam pipe
5064 if (CorrectForPipeMaterial(&tmp,"inward")) {
5065 const AliESDVertex* vtx = myesd->GetVertex();
5066 if(!vtx) return kFALSE;
5067 Double_t ddz[2],cov[3];
5068 Double_t maxD=3.;
5069 if(!tmp.PropagateToDCA(vtx,AliTracker::GetBz(),maxD,ddz,cov)) return kFALSE;
5070 if(TMath::Abs(ddz[0])>=AliITSReconstructor::GetRecoParam()->GetDCACutPlaneEff()) return kFALSE;
5071
5072 Double_t covar[6]; vtx->GetCovMatrix(covar);
5073 Double_t p[2]={tmp.GetParameter()[0]-ddz[0],tmp.GetParameter()[1]-ddz[1]};
5074 Double_t c[3]={covar[2],0.,covar[5]};
5075 Double_t chi2= ((AliESDtrack*)tmp.GetESDtrack())->GetPredictedChi2(p,c);
5076 if (chi2>AliITSReconstructor::GetRecoParam()->GetVertexChi2CutPlaneEff()) return kFALSE; // Use this to cut on chi^2
5077
5078 } else return kFALSE;
5079 }
5080
5081
8a32c4b5 5082 return kTRUE;
7167ae53 5083}
5084//------------------------------------------------------------------------
a70ed6ad 5085void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 5086//
5087// This Method has to be optimized! For the time-being it uses the same criteria
5088// as those used in the search of extra clusters for overlapping modules.
5089//
5090// Method Purpose: estabilish whether a track has produced a recpoint or not
5091// in the layer under study (For Plane efficiency)
5092//
5093// inputs: AliITStrackMI* track (pointer to a usable track)
5094// outputs: none
5095// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
5096// traversed by this very track. In details:
5097// - if a cluster can be associated to the track then call
5098// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
5099// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
5100//
a31a139f 5101 if(!fPlaneEff)
5102 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 5103 AliITSlayer &layer=fgLayers[ilayer];
5104 Double_t r=layer.GetR();
7167ae53 5105 AliITStrackMI tmp(*track);
5106
5107// detector number
5108 Double_t phi,z;
5109 if (!tmp.GetPhiZat(r,phi,z)) return;
5110 Int_t idet=layer.FindDetectorIndex(phi,z);
5111
8a32c4b5 5112 if(idet<0) { AliInfo(Form("cannot find detector"));
5113 return;}
7167ae53 5114
7167ae53 5115
0e91092f 5116//propagate to the intersection with the detector plane
7167ae53 5117 const AliITSdetector &det=layer.GetDetector(idet);
5118 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 5119
1c97ce2f 5120
0e91092f 5121//***************
5122// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5123//
5124 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5125 TMath::Sqrt(tmp.GetSigmaZ2() +
5126 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5127 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5128 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5129 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5130 TMath::Sqrt(tmp.GetSigmaY2() +
5131 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5132 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5133 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5134
5135// road in global (rphi,z) [i.e. in tracking ref. system]
5136 Double_t zmin = tmp.GetZ() - dz;
5137 Double_t zmax = tmp.GetZ() + dz;
5138 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5139 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5140
5141// select clusters in road
7167ae53 5142 layer.SelectClusters(zmin,zmax,ymin,ymax);
5143
0e91092f 5144// Define criteria for track-cluster association
7167ae53 5145 Double_t msz = tmp.GetSigmaZ2() +
5146 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5147 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5148 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5149 Double_t msy = tmp.GetSigmaY2() +
5150 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5151 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5152 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 5153 if (tmp.GetConstrain()) {
7167ae53 5154 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5155 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 5156 } else {
5157 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5158 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5159 }
cff21c12 5160
5161 if(AliITSReconstructor::GetRecoParam()->GetSwitchOffStdSearchClusPlaneEff()){
5162 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXSearchClusterPlaneEff();
5163 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZSearchClusterPlaneEff();
5164 Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXSearchClusterPlaneEff();
5165 Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZSearchClusterPlaneEff();
5166 msy = nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
5167 msz = nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
5168
5169 if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigSrhClusPlaneEff()){
5170 if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) msy -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
5171 else msy -= distx;
5172
5173 if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) msz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
5174 else msz -= distz;
5175 }
5176
5177 msy *= msy;
5178 msz *= msz;
5179
5180 }
5181
5182 if(msz==0 || msy==0){AliWarning("UseTrackForPlaneEff: null search frame"); return;}
5183
7167ae53 5184 msz = 1./msz; // 1/RoadZ^2
5185 msy = 1./msy; // 1/RoadY^2
7167ae53 5186
5187 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5188 Int_t idetc=-1;
8a32c4b5 5189 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5190 //Double_t tolerance=0.2;
5191 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 5192 idetc = cl->GetDetectorIndex();
5193 if(idet!=idetc) continue;
5194 //Int_t ilay = cl->GetLayer();
5195
5196 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5197 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5198
5199 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 5200 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5201 }*/
5202 Float_t locx; //
5203 Float_t locz; //
0e91092f 5204 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 5205//
5206 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5207 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5208 if(key>fPlaneEff->Nblock()) return;
5209 Bool_t found=kFALSE;
8a32c4b5 5210 //if (ci>=0) {
1cc5cedc 5211 Double_t chi2;
8a32c4b5 5212 while ((cl=layer.GetNextCluster(clidx))!=0) {
5213 idetc = cl->GetDetectorIndex();
5214 if(idet!=idetc) continue;
5215 // here real control to see whether the cluster can be associated to the track.
5216 // cluster not associated to track
5217 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5218 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5219 // calculate track-clusters chi2
1cc5cedc 5220 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5221 // in particular, the error associated to the cluster
8a32c4b5 5222 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5223 // chi2 cut
5224 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 5225 found=kTRUE;
8a32c4b5 5226 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 5227 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5228 // track->SetExtraModule(ilayer,idetExtra);
5229 }
5230 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 5231 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
1f1e7832 5232
5233// this for FO efficiency studies (only for SPD) //
5234 UInt_t keyFO=999999;
5235 Bool_t foundFO=kFALSE;
5236 if(ilayer<2){ //ONLY SPD layers for FastOr studies
5237 TBits mapFO = fkDetTypeRec->GetFastOrFiredMap();
5238 Int_t phase = (fEsd->GetBunchCrossNumber())%4;
5239 if(!fSPDChipIntPlaneEff[key]){
5240 AliITSPlaneEffSPD spd;
5241 keyFO = spd.SwitchChipKeyNumbering(key);
5242 if(mapFO.TestBitNumber(keyFO))foundFO=kTRUE;
5243 keyFO = key + (AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip)*(phase+1);
5244 if(keyFO<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip) {
5245 AliWarning(Form("UseTrackForPlaneEff: too small keyF0 (= %d), setting it to 999999",keyFO));
5246 keyFO=999999;
5247 }
5248 if(!fPlaneEff->UpDatePlaneEff(foundFO,keyFO))
5249 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for FastOR for key=%d",keyFO));
5250 }
5251 }
5252
5253
5254
5fbd4fd6 5255 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 5256 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5257 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5258 Int_t cltype[2]={-999,-999};
879cdb02 5259 // and the module
5260
f1b15b8d 5261 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 5262
5263 tr[0]=locx;
5264 tr[1]=locz;
5265 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5266 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5267
3ebe30ad 5268 if (found){
5269 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5270 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5271 cltype[0]=layer.GetCluster(ci)->GetNy();
5272 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 5273
5274 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5275 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5276 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5277 // It is computed properly by calling the method
5278 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5279 // T
5280 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5281 //if (tmp.PropagateTo(x,0.,0.)) {
5282 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5283 AliCluster c(*layer.GetCluster(ci));
5284 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5285 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 5286 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 5287 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5288 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 5289 //}
3ebe30ad 5290 }
879cdb02 5291 // Compute the angles between the track and the module
5292 // compute the angle "in phi direction", i.e. the angle in the transverse plane
5293 // between the normal to the module and the projection (in the transverse plane) of the
5294 // track trajectory
5295 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
5296 Float_t tgl = tmp.GetTgl();
5297 Float_t phitr = tmp.GetSnp();
5298 phitr = TMath::ASin(phitr);
5299 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
5300
5301 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
5302 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
5303 Double_t alpha =0.;
5304 alpha = tmp.GetAlpha();
5305 Double_t phiglob = alpha+phitr;
5306 Double_t p[3];
5307 p[0] = TMath::Cos(phiglob);
5308 p[1] = TMath::Sin(phiglob);
5309 p[2] = tgl;
5310 TVector3 pvec(p[0],p[1],p[2]);
5311 TVector3 normvec(rot[1],rot[4],rot[7]);
5312 Double_t angle = pvec.Angle(normvec);
5313
5314 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
5315 angle *= 180./TMath::Pi();
5316
5317 //Trasverse Plane
5318 TVector3 pt(p[0],p[1],0);
5319 TVector3 normt(rot[1],rot[4],0);
5320 Double_t anglet = pt.Angle(normt);
5321
5322 Double_t phiPt = TMath::ATan2(p[1],p[0]);
5323 if(phiPt<0)phiPt+=2.*TMath::Pi();
5324 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
5325 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
5326 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
5327 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
5328 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
5329 anglet *= 180./TMath::Pi();
5330
f1b15b8d 5331 angleModTrack[2]=(Float_t) angle;
5332 angleModTrack[0]=(Float_t) anglet;
879cdb02 5333 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
f1b15b8d 5334 angleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
5335 angleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
5336 angleModTrack[1]*=180./TMath::Pi(); // in degree
879cdb02 5337
f1b15b8d 5338 fPlaneEff->FillHistos(key,found,tr,clu,cltype,angleModTrack);
1f1e7832 5339
5340 // For FO efficiency studies of SPD
f1b15b8d 5341 if(ilayer<2 && !fSPDChipIntPlaneEff[key]) fPlaneEff->FillHistos(keyFO,foundFO,tr,clu,cltype,angleModTrack);
5fbd4fd6 5342 }
1f1e7832 5343 if(ilayer<2) fSPDChipIntPlaneEff[key]=kTRUE;
7167ae53 5344return;
5345}
a4354152 5346
5347Int_t AliITStrackerMI::FindClusterOfTrack(int label, int lr, int* store) const //RS
5348{
5349 // find the MC cluster for the label
5350 return fgLayers[lr].FindClusterForLabel(label,store);
5351}
5352
fa4c46da 5353/*
a4354152 5354Int_t AliITStrackerMI::GetPattern(const AliITStrackMI* track, char* patt)
5355{
5356 // creates pattarn of hits marking fake/corrects by f/c. Used for debugging (RS)
cff9e015 5357 strncpy(patt,"......",6);
a4354152 5358 int tpcLabel = 0;
5359 if (track->GetESDtrack()) tpcLabel = track->GetESDtrack()->GetTPCLabel();
5360 //
5361 int nwrong = 0;
5362 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
5363 Int_t cindex = track->GetClusterIndex(i);
5364 Int_t l=(cindex & 0xf0000000) >> 28;
5365 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
5366 Int_t isWrong=1;
5367 for (Int_t ind=0;ind<3;ind++) if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
5368 patt[l] = isWrong ? 'f':'c';
5369 nwrong+=isWrong;
5370 }
5371 return nwrong;
5372}
fa4c46da 5373*/
a4354152 5374//------------------------------------------------------------------------
b80c197e 5375Int_t AliITStrackerMI::AliITSlayer::FindClusterForLabel(Int_t label, Int_t *store) const
5376{ //RS
a4354152 5377 //--------------------------------------------------------------------
5378
5379 int nfound = 0;
5380 for (int ic=0;ic<fN;ic++) {
5381 const AliITSRecPoint *cl = GetCluster(ic);
5382 for (int i=0;i<3;i++) if (cl->GetLabel(i)==label) {
5383 if (nfound<50) {
5384 if (store) store[nfound] = ic;
5385 nfound++;
5386 }
5387 break;
5388 }
5389 }
5390 return nfound;
5391}
773dd1f5 5392