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1) Added AliESDtrack and AliAODtrack to GetTOFBunchCrossing(double b=0), to calculate
[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 //
545 // RS
04315dad 546 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
dc422a31 547 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
548 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
549 //
e43c066c 550 TObjArray itsTracks(15000);
628e7bb0 551 fOriginal.Clear();
81e97e0d 552 fEsd = event; // store pointer to the esd
afd25725 553
9a5326b1 554 // temporary (for cosmics)
555 if(event->GetVertex()) {
556 TString title = event->GetVertex()->GetTitle();
557 if(title.Contains("cosmics")) {
558 Double_t xyz[3]={GetX(),GetY(),GetZ()};
559 Double_t exyz[3]={0.1,0.1,0.1};
560 SetVertex(xyz,exyz);
561 }
562 }
563 // temporary
75a74b11 564 Int_t noesd = 0;
e43c066c 565 {/* Read ESD tracks */
afd25725 566 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 567 Int_t nentr=event->GetNumberOfTracks();
75a74b11 568 noesd=nentr;
569 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 570 while (nentr--) {
571 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 572 // ---- for debugging:
573 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
e43c066c 574
575 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
576 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
577 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 578 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
763bdf3e 579 AliITStrackMI *t = new AliITStrackMI(*esd);
b9671574 580 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
581 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 582
583
afd25725 584 // look at the ESD mass hypothesys !
585 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 586 // write expected q
b9671574 587 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 588
afd25725 589 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 590 //track - can be V0 according to TPC
afd25725 591 } else {
592 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 593 delete t;
594 continue;
e50912db 595 }
afd25725 596 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 597 delete t;
598 continue;
599 }
6c23ffed 600 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 601 delete t;
602 continue;
603 }
e50912db 604 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 605 delete t;
606 continue;
607 }
e43c066c 608 }
b9671574 609 t->SetReconstructed(kFALSE);
e43c066c 610 itsTracks.AddLast(t);
628e7bb0 611 fOriginal.AddLast(t);
e43c066c 612 }
613 } /* End Read ESD tracks */
614
615 itsTracks.Sort();
628e7bb0 616 fOriginal.Sort();
e43c066c 617 Int_t nentr=itsTracks.GetEntriesFast();
618 fTrackHypothesys.Expand(nentr);
81e97e0d 619 fBestHypothesys.Expand(nentr);
afd25725 620 MakeCoefficients(nentr);
513ab112 621 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 622 Int_t ntrk=0;
afd25725 623 // THE TWO TRACKING PASSES
e43c066c 624 for (fPass=0; fPass<2; fPass++) {
625 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 626 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 627 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 628 if (t==0) continue; //this track has been already tracked
1c97ce2f 629 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 630 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 631 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 632 if (fConstraint[fPass]) {
633 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
634 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
635 }
e43c066c 636
637 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 638 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 639 fI = 6;
640 ResetTrackToFollow(*t);
641 ResetBestTrack();
6518a6c5 642
e50912db 643 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 644
e43c066c 645
646 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
647 //
ae00569a 648 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 649 if (!besttrack) continue;
650 besttrack->SetLabel(tpcLabel);
651 // besttrack->CookdEdx();
652 CookdEdx(besttrack);
b9671574 653 besttrack->SetFakeRatio(1.);
e43c066c 654 CookLabel(besttrack,0.); //For comparison only
e43c066c 655 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 656 t->SetWinner(besttrack);
628e7bb0 657
628e7bb0 658 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
659
b9671574 660 t->SetReconstructed(kTRUE);
1c97ce2f 661 ntrk++;
4187a601 662 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 663 }
664 GetBestHypothesysMIP(itsTracks);
afd25725 665 } // end loop on the two tracking passes
a4354152 666 //
667 if (fFlagFakes) FlagFakes(itsTracks);
668 //
cd90f0a2 669 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
670 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 671 fAfterV0 = kTRUE;
628e7bb0 672 //
a0b53cc4 673 itsTracks.Clear();
e43c066c 674 //
675 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 676 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 677 TObjArray * array =(TObjArray*)fTrackHypothesys.At(ientry);
e43c066c 678 if (array) array->Delete();
679 delete fTrackHypothesys.RemoveAt(ientry);
680 }
681
682 fTrackHypothesys.Delete();
4ffece29 683 entries = fBestHypothesys.GetEntriesFast();
684 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 685 TObjArray * array =(TObjArray*)fBestHypothesys.At(ientry);
4ffece29 686 if (array) array->Delete();
687 delete fBestHypothesys.RemoveAt(ientry);
688 }
81e97e0d 689 fBestHypothesys.Delete();
628e7bb0 690 fOriginal.Clear();
afd25725 691 delete [] fCoefficients;
692 fCoefficients=0;
e50912db 693 DeleteTrksMaterialLUT();
694
75a74b11 695 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 696
697 fTrackingPhase="Default";
628e7bb0 698
e43c066c 699 return 0;
700}
44347160 701//------------------------------------------------------------------------
af885e0f 702Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 703 //--------------------------------------------------------------------
704 // This functions propagates reconstructed ITS tracks back
705 // The clusters must be loaded !
706 //--------------------------------------------------------------------
e50912db 707 fTrackingPhase="PropagateBack";
e43c066c 708 Int_t nentr=event->GetNumberOfTracks();
75a74b11 709 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 710
711 Int_t ntrk=0;
712 for (Int_t i=0; i<nentr; i++) {
713 AliESDtrack *esd=event->GetTrack(i);
714
a512bf97 715 // Start time integral and add distance from current position to vertex
e43c066c 716 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
763bdf3e 717 AliITStrackMI *t = new AliITStrackMI(*esd);
67178f34 718 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
a512bf97 719 t->GetXYZ(xyzTrk);
67178f34 720 Double_t dst2 = 0.;
a512bf97 721 for (Int_t icoord=0; icoord<3; icoord++) {Double_t di = xyzTrk[icoord] - xyzVtx[icoord];dst2 += di*di; }
722 t->StartTimeIntegral();
723 t->AddTimeStep(TMath::Sqrt(dst2));
724 //
725 // transfer the time integral to ESD track
726 esd->SetStatus(AliESDtrack::kTIME);
727 Double_t times[10];t->GetIntegratedTimes(times); esd->SetIntegratedTimes(times);
728 esd->SetIntegratedLength(t->GetIntegratedLength());
729 //
730 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
e43c066c 731
a512bf97 732 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
733 ResetTrackToFollow(*t);
734 //
6c94f330 735 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 736 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
a512bf97 737 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
738 delete t;
739 continue;
740 }
741 fTrackToFollow.SetLabel(t->GetLabel());
742 //fTrackToFollow.CookdEdx();
743 CookLabel(&fTrackToFollow,0.); //For comparison only
744 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
745 //UseClusters(&fTrackToFollow);
746 ntrk++;
e43c066c 747 }
748 delete t;
749 }
750
75a74b11 751 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 752
e50912db 753 fTrackingPhase="Default";
754
e43c066c 755 return 0;
756}
44347160 757//------------------------------------------------------------------------
af885e0f 758Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 759 //--------------------------------------------------------------------
760 // This functions refits ITS tracks using the
761 // "inward propagated" TPC tracks
762 // The clusters must be loaded !
763 //--------------------------------------------------------------------
e50912db 764 fTrackingPhase="RefitInward";
44396017 765
cd90f0a2 766 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 767
794d9013 768 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
769 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
770
e43c066c 771 Int_t nentr=event->GetNumberOfTracks();
75a74b11 772 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 773
1f1e7832 774 // only for PlaneEff and in case of SPD (for FO studies)
775 if( AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
776 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0 &&
777 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()<2) {
778 for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
779 }
780
e43c066c 781 Int_t ntrk=0;
782 for (Int_t i=0; i<nentr; i++) {
783 AliESDtrack *esd=event->GetTrack(i);
784
785 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
786 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
787 if (esd->GetStatus()&AliESDtrack::kTPCout)
788 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
789
763bdf3e 790 AliITStrackMI *t = new AliITStrackMI(*esd);
791
b9671574 792 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 793 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 794 delete t;
795 continue;
796 }
797
798 ResetTrackToFollow(*t);
799 fTrackToFollow.ResetClusters();
800
ef3508c5 801 // ITS standalone tracks
802 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
6c94f330 803 fTrackToFollow.ResetCovariance(10.);
ef3508c5 804 // protection for loopers that can have parameters screwed up
805 if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
806 TMath::Abs(fTrackToFollow.GetZ())>1000.) {
807 delete t;
808 continue;
809 }
810 }
e43c066c 811
812 //Refitting...
58e8dc31 813 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
814 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 815
4187a601 816 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
794d9013 817 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
4187a601 818 AliDebug(2," refit OK");
e43c066c 819 fTrackToFollow.SetLabel(t->GetLabel());
820 // fTrackToFollow.CookdEdx();
821 CookdEdx(&fTrackToFollow);
822
823 CookLabel(&fTrackToFollow,0.0); //For comparison only
824
9a5326b1 825 //The beam pipe
e50912db 826 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 827 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 828 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 829 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
830 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 831 Double_t r[3]={0.,0.,0.};
9a5326b1 832 Double_t maxD=3.;
833 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
834 ntrk++;
e43c066c 835 }
836 }
837 delete t;
838 }
839
75a74b11 840 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 841
e50912db 842 fTrackingPhase="Default";
843
e43c066c 844 return 0;
845}
44347160 846//------------------------------------------------------------------------
e43c066c 847AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
848 //--------------------------------------------------------------------
849 // Return pointer to a given cluster
850 //--------------------------------------------------------------------
851 Int_t l=(index & 0xf0000000) >> 28;
852 Int_t c=(index & 0x0fffffff) >> 00;
853 return fgLayers[l].GetCluster(c);
854}
9a5326b1 855//------------------------------------------------------------------------
df29e9a4 856Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 857 //--------------------------------------------------------------------
df29e9a4 858 // Get track space point with index i
9a5326b1 859 //--------------------------------------------------------------------
60066577 860
78b03929 861 Int_t l=(index & 0xf0000000) >> 28;
862 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 863 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 864 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 865
60066577 866 Float_t xyz[3];
867 Float_t cov[6];
868 cl->GetGlobalXYZ(xyz);
869 cl->GetGlobalCov(cov);
870 p.SetXYZ(xyz, cov);
be77c8c9 871 p.SetCharge(cl->GetQ());
ebbcf1ea 872 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 873 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 874 p.SetClusterType(cl->GetClusterType());
ae079791 875 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 876 switch (l) {
877 case 0:
ae079791 878 iLayer = AliGeomManager::kSPD1;
df29e9a4 879 break;
880 case 1:
ae079791 881 iLayer = AliGeomManager::kSPD2;
df29e9a4 882 break;
883 case 2:
ae079791 884 iLayer = AliGeomManager::kSDD1;
df29e9a4 885 break;
886 case 3:
ae079791 887 iLayer = AliGeomManager::kSDD2;
9a5326b1 888 break;
889 case 4:
890 iLayer = AliGeomManager::kSSD1;
891 break;
892 case 5:
893 iLayer = AliGeomManager::kSSD2;
894 break;
895 default:
896 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
897 break;
898 };
899 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
900 p.SetVolumeID((UShort_t)volid);
901 return kTRUE;
902}
903//------------------------------------------------------------------------
904Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
905 AliTrackPoint& p, const AliESDtrack *t) {
906 //--------------------------------------------------------------------
907 // Get track space point with index i
908 // (assign error estimated during the tracking)
909 //--------------------------------------------------------------------
910
911 Int_t l=(index & 0xf0000000) >> 28;
912 Int_t c=(index & 0x0fffffff) >> 00;
913 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
914 Int_t idet = cl->GetDetectorIndex();
4187a601 915
9a5326b1 916 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
917
918 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
919 Float_t detxy[2];
920 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
921 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
922 Double_t alpha = t->GetAlpha();
923 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
242bd643 924 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
9a5326b1 925 phi += alpha-det.GetPhi();
926 Float_t tgphi = TMath::Tan(phi);
927
928 Float_t tgl = t->GetTgl(); // tgl about const along track
929 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
930
d9ead1a0 931 Float_t errtrky,errtrkz,covyz;
8c139cf3 932 Bool_t addMisalErr=kFALSE;
d9ead1a0 933 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 934
935 Float_t xyz[3];
936 Float_t cov[6];
937 cl->GetGlobalXYZ(xyz);
938 // cl->GetGlobalCov(cov);
939 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 940 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 941 tmpcl.GetGlobalCov(cov);
942
943 p.SetXYZ(xyz, cov);
be77c8c9 944 p.SetCharge(cl->GetQ());
ebbcf1ea 945 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 946 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 947 p.SetClusterType(cl->GetClusterType());
9a5326b1 948
949 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
950 switch (l) {
951 case 0:
952 iLayer = AliGeomManager::kSPD1;
953 break;
954 case 1:
955 iLayer = AliGeomManager::kSPD2;
956 break;
957 case 2:
958 iLayer = AliGeomManager::kSDD1;
959 break;
960 case 3:
961 iLayer = AliGeomManager::kSDD2;
df29e9a4 962 break;
963 case 4:
ae079791 964 iLayer = AliGeomManager::kSSD1;
df29e9a4 965 break;
966 case 5:
ae079791 967 iLayer = AliGeomManager::kSSD2;
df29e9a4 968 break;
969 default:
970 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
971 break;
972 };
ae079791 973 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 974
df29e9a4 975 p.SetVolumeID((UShort_t)volid);
976 return kTRUE;
977}
44347160 978//------------------------------------------------------------------------
81e97e0d 979void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 980{
981 //--------------------------------------------------------------------
982 // Follow prolongation tree
983 //--------------------------------------------------------------------
81e97e0d 984 //
afd25725 985 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
986 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
987
2755f080 988
b9671574 989 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 990 if (esd->GetV0Index(0)>0) {
81e97e0d 991 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 992 // mapping of ESD track is different as ITS track in Containers
81e97e0d 993 // Need something more stable
44347160 994 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 995 for (Int_t i=0;i<3;i++){
996 Int_t index = esd->GetV0Index(i);
997 if (index==0) break;
d6a49f20 998 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 999 if (vertex->GetStatus()<0) continue; // rejected V0
1000 //
afd25725 1001 if (esd->GetSign()>0) {
1002 vertex->SetIndex(0,esdindex);
1003 } else {
1004 vertex->SetIndex(1,esdindex);
1005 }
81e97e0d 1006 }
1007 }
1008 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
1009 if (!bestarray){
1010 bestarray = new TObjArray(5);
4ffece29 1011 bestarray->SetOwner();
81e97e0d 1012 fBestHypothesys.AddAt(bestarray,esdindex);
1013 }
e43c066c 1014
81e97e0d 1015 //
e43c066c 1016 //setup tree of the prolongations
1017 //
a4354152 1018 const int kMaxTr = 100; //RS
1019 static AliITStrackMI tracks[7][kMaxTr];
15dd636f 1020 AliITStrackMI *currenttrack;
1021 static AliITStrackMI currenttrack1;
1022 static AliITStrackMI currenttrack2;
1023 static AliITStrackMI backuptrack;
e43c066c 1024 Int_t ntracks[7];
a4354152 1025 Int_t nindexes[7][kMaxTr];
1026 Float_t normalizedchi2[kMaxTr];
e43c066c 1027 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 1028 otrack->SetNSkipped(0);
15dd636f 1029 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 1030 ntracks[6]=1;
81e97e0d 1031 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 1032 Int_t modstatus = 1; // found
1033 Float_t xloc,zloc;
e43c066c 1034 //
1035 //
1036 // follow prolongations
e50912db 1037 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 1038 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 1039 fI = ilayer;
e43c066c 1040 //
2755f080 1041 AliITSlayer &layer=fgLayers[ilayer];
1042 Double_t r = layer.GetR();
e43c066c 1043 ntracks[ilayer]=0;
1044 //
1045 //
2755f080 1046 Int_t nskipped=0;
e43c066c 1047 Float_t nused =0;
e50912db 1048 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
a4354152 1049 // printf("LR %d Tr:%d NSeeds: %d\n",ilayer,itrack,ntracks[ilayer+1]);
e43c066c 1050 //set current track
a4354152 1051 if (ntracks[ilayer]>=kMaxTr) break;
b9671574 1052 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1053 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 1054 if (ntracks[ilayer]>15+ilayer){
b9671574 1055 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1056 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 1057 }
1058
15dd636f 1059 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1060
afd25725 1061 // material between SSD and SDD, SDD and SPD
e50912db 1062 if (ilayer==3)
1063 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1064 if (ilayer==1)
1065 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1066
2755f080 1067 // detector number
8602c008 1068 Double_t phi,z;
1069 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1070 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1071
1072 Double_t trackGlobXYZ1[3];
d1181f10 1073 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1074
2755f080 1075 // Get the budget to the primary vertex for the current track being prolonged
a4354152 1076 Double_t budgetToPrimVertex = 0;
1077 double xMSLrs[9],x2X0MSLrs[9]; // needed for ImproveKalman
1078 int nMSLrs = 0;
1079 //
1080 if (fUseImproveKalman) nMSLrs = GetEffectiveThicknessLbyL(xMSLrs,x2X0MSLrs);
1081 else budgetToPrimVertex = GetEffectiveThickness();
1082 //
2755f080 1083 // check if we allow a prolongation without point
6518a6c5 1084 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1085 if (skip) {
1086 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1087 // propagate to the layer radius
d1181f10 1088 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1089 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1090 // apply correction for material of the current layer
1091 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1092 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1093 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1094 vtrack->SetClIndex(ilayer,-1);
ae00569a 1095 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1096 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1097 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1098 }
a4354152 1099 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1100 fUseImproveKalman ?
1101 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1102 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1103 }
2755f080 1104 ntracks[ilayer]++;
6518a6c5 1105 continue;
2755f080 1106 }
1107
1108 // track outside layer acceptance in z
1109 if (idet<0) continue;
1110
1111 //propagate to the intersection with the detector plane
1112 const AliITSdetector &det=layer.GetDetector(idet);
1113 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1114 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1115 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1116 currenttrack1.SetDetectorIndex(idet);
1117 currenttrack2.SetDetectorIndex(idet);
d1181f10 1118 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1119
afd25725 1120 //***************
1c97ce2f 1121 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1122 //
2755f080 1123 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1124 Double_t zmin,zmax,ymin,ymax;
1125 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1126
afd25725 1127 // select clusters in road
e43c066c 1128 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1129 //********************
44347160 1130
afd25725 1131 // Define criteria for track-cluster association
44347160 1132 Double_t msz = currenttrack1.GetSigmaZ2() +
1133 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1134 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1135 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1136 Double_t msy = currenttrack1.GetSigmaY2() +
1137 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1138 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1139 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1140 if (constrain) {
1141 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1142 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1143 } else {
1144 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1145 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1146 }
1147 msz = 1./msz; // 1/RoadZ^2
1148 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1149
e43c066c 1150 //
e43c066c 1151 //
afd25725 1152 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1153 //
afd25725 1154 const AliITSRecPoint *cl=0;
1155 Int_t clidx=-1;
1156 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1157 Bool_t deadzoneSPD=kFALSE;
e43c066c 1158 currenttrack = &currenttrack1;
6518a6c5 1159
ae00569a 1160 // check if the road contains a dead zone
23197852 1161 Bool_t noClusters = kFALSE;
1162 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1163 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1164 Double_t dz=0.5*(zmax-zmin);
1165 Double_t dy=0.5*(ymax-ymin);
1166 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1167 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1168 // create a prolongation without clusters (check also if there are no clusters in the road)
1169 if (dead ||
23197852 1170 (noClusters &&
ae00569a 1171 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1172 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1173 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1174 if (dead==0) {
1175 modstatus = 5; // no cls in road
1176 } else if (dead==1) {
1177 modstatus = 7; // holes in z in SPD
f8720bda 1178 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1179 modstatus = 2; // dead from OCDB
1180 }
1181 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1182 // apply correction for material of the current layer
1183 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1184 if (constrain) { // apply vertex constrain
1185 updatetrack->SetConstrain(constrain);
1186 Bool_t isPrim = kTRUE;
1187 if (ilayer<4) { // check that it's close to the vertex
1188 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1189 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1190 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1191 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1192 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1193 }
a4354152 1194 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1195 fUseImproveKalman ?
1196 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1197 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1198 }
6518a6c5 1199 }
f8720bda 1200 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1201 if (dead) {
ae00569a 1202 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1203 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1204 deadzoneSPD=kTRUE;
f8720bda 1205 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1206 updatetrack->SetDeadZoneProbability(ilayer,1.);
1207 } else if (dead==4) { // at least a single dead channel from OCDB
1208 updatetrack->SetDeadZoneProbability(ilayer,0.);
1209 }
6518a6c5 1210 }
1211 ntracks[ilayer]++;
1212 }
1213
ae00569a 1214 clidx=-1;
6518a6c5 1215 // loop over clusters in the road
afd25725 1216 while ((cl=layer.GetNextCluster(clidx))!=0) {
a4354152 1217 if (ntracks[ilayer]>int(0.95*kMaxTr)) break; //space for skipped clusters
afd25725 1218 Bool_t changedet =kFALSE;
88e3c173 1219 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1220 Int_t idetc=cl->GetDetectorIndex();
afd25725 1221
a5d0fae6 1222 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1223 // take into account misalignment (bring track to real detector plane)
1224 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1225 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1226 // a first cut on track-cluster distance
1227 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1228 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1229 { // cluster not associated to track
4187a601 1230 AliDebug(2,"not associated");
421c4ba7 1231 // MvL: added here as well
1232 // bring track back to ideal detector plane
1233 currenttrack->Propagate(xTrOrig);
1c97ce2f 1234 continue;
1235 }
1236 // bring track back to ideal detector plane
9be1d1c7 1237 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1238 } else { // have to move track to cluster's detector
a5d0fae6 1239 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1240 // a first cut on track-cluster distance
a5d0fae6 1241 Double_t y;
1c97ce2f 1242 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1243 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1244 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1245 continue; // cluster not associated to track
e43c066c 1246 //
15dd636f 1247 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1248 changedet = kTRUE;
e43c066c 1249 currenttrack =&currenttrack2;
a5d0fae6 1250 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1251 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1252 changedet = kFALSE;
e43c066c 1253 continue;
1254 }
a5d0fae6 1255 currenttrack->SetDetectorIndex(idetc);
e50912db 1256 // Get again the budget to the primary vertex
1257 // for the current track being prolonged, if had to change detector
1258 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1259 }
1260
afd25725 1261 // calculate track-clusters chi2
1262 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1263 // chi2 cut
4187a601 1264 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1265 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1266 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
a4354152 1267 if (ntracks[ilayer]>=kMaxTr) continue;
15dd636f 1268 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1269 updatetrack->SetClIndex(ilayer,-1);
afd25725 1270 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1271
88e3c173 1272 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1273 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1274 AliDebug(2,"update failed");
1c97ce2f 1275 continue;
1276 }
09cf9d66 1277 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1278 modstatus = 1; // found
6518a6c5 1279 } else { // virtual cluster in dead zone
b9671574 1280 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1281 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1282 modstatus = 7; // holes in z in SPD
1283 }
1284
1285 if (changedet) {
1286 Float_t xlocnewdet,zlocnewdet;
d1181f10 1287 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1288 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1289 }
ae00569a 1290 } else {
1291 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1292 }
afd25725 1293 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1294
1295 // apply correction for material of the current layer
e50912db 1296 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1297
afd25725 1298 if (constrain) { // apply vertex constrain
b9671574 1299 updatetrack->SetConstrain(constrain);
e43c066c 1300 Bool_t isPrim = kTRUE;
afd25725 1301 if (ilayer<4) { // check that it's close to the vertex
b9671574 1302 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1303 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1304 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1305 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1306 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1307 }
a4354152 1308 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1309 fUseImproveKalman ?
1310 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1311 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1312 }
e43c066c 1313 } //apply vertex constrain
1314 ntracks[ilayer]++;
afd25725 1315 } // create new hypothesis
4187a601 1316 else {
1317 AliDebug(2,"chi2 too large");
1318 }
1319
2755f080 1320 } // loop over possible prolongations
1321
1322 // allow one prolongation without clusters
a4354152 1323 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<kMaxTr) {
15dd636f 1324 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1325 // apply correction for material of the current layer
1326 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1327 vtrack->SetClIndex(ilayer,-1);
ae00569a 1328 modstatus = 3; // skipped
1329 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
a4354152 1330 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1331 fUseImproveKalman ?
1332 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1333 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1334 }
b9671574 1335 vtrack->IncrementNSkipped();
e43c066c 1336 ntracks[ilayer]++;
1337 }
1338
6262dd3d 1339
e50912db 1340 } // loop over tracks in layer ilayer+1
afd25725 1341
1342 //loop over track candidates for the current layer
e43c066c 1343 //
1344 //
1345 Int_t accepted=0;
1346
afd25725 1347 Int_t golden=0;
e43c066c 1348 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1349 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1350 if (normalizedchi2[itrack] <
1351 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1352 if (ilayer>4) {
1353 accepted++;
1354 } else {
1355 if (constrain) { // constrain
afd25725 1356 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1357 accepted++;
44347160 1358 } else { // !constrain
afd25725 1359 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1360 accepted++;
44347160 1361 }
e43c066c 1362 }
1363 }
afd25725 1364 // sort tracks by increasing normalized chi2
1365 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1366 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1367 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
a4354152 1368 // if (ntracks[ilayer]>90) ntracks[ilayer]=90;
04315dad 1369 if (ntracks[ilayer]>int(kMaxTr*0.9)) ntracks[ilayer]=int(kMaxTr*0.9);
afd25725 1370 } // end loop over layers
1371
afd25725 1372
1373 //
1374 // Now select tracks to be kept
1375 //
44347160 1376 Int_t max = constrain ? 20 : 5;
e43c066c 1377
afd25725 1378 // tracks that reach layer 0 (SPD inner)
44347160 1379 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1380 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1381 if (track.GetNumberOfClusters()<2) continue;
afd25725 1382 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1383 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1384 continue;
1385 }
15dd636f 1386 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1387 }
afd25725 1388
1389 // tracks that reach layer 1 (SPD outer)
628e7bb0 1390 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1391 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1392 if (track.GetNumberOfClusters()<4) continue;
afd25725 1393 if (!constrain && track.GetNormChi2(1) >
1394 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1395 if (constrain) track.IncrementNSkipped();
81e97e0d 1396 if (!constrain) {
b9671574 1397 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1398 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1399 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1400 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1401 }
1402 }
15dd636f 1403 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1404 }
afd25725 1405
6518a6c5 1406 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1407 if (!constrain){
628e7bb0 1408 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1409 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1410 if (track.GetNumberOfClusters()<3) continue;
9cd19c63 1411 if (track.GetNormChi2(2) >
afd25725 1412 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
9cd19c63 1413 track.SetD(0,track.GetD(GetX(),GetY()));
1414 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1415 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1416 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1417 }
15dd636f 1418 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1419 }
1420 }
81e97e0d 1421
afd25725 1422 if (!constrain) {
81e97e0d 1423 //
afd25725 1424 // register best track of each layer - important for V0 finder
81e97e0d 1425 //
1426 for (Int_t ilayer=0;ilayer<5;ilayer++){
1427 if (ntracks[ilayer]==0) continue;
1428 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1429 if (track.GetNumberOfClusters()<1) continue;
1430 CookLabel(&track,0);
1431 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1432 }
1433 }
1434 //
1435 // update TPC V0 information
1436 //
b9671574 1437 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1438 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1439 for (Int_t i=0;i<3;i++){
b9671574 1440 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1441 if (index==0) break;
44347160 1442 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1443 if (vertex->GetStatus()<0) continue; // rejected V0
1444 //
6c94f330 1445 if (otrack->GetSign()>0) {
81e97e0d 1446 vertex->SetIndex(0,esdindex);
1447 }
1448 else{
1449 vertex->SetIndex(1,esdindex);
1450 }
1451 //find nearest layer with track info
b75d63a7 1452 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1453 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1454 Int_t nearest = nearestold;
9cd19c63 1455 for (Int_t ilayer =nearest;ilayer<7;ilayer++){
81e97e0d 1456 if (ntracks[nearest]==0){
1457 nearest = ilayer;
1458 }
1459 }
1460 //
1461 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1462 if (nearestold<5&&nearest<5){
b9671574 1463 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1464 if (accept){
6c94f330 1465 if (track.GetSign()>0) {
b75d63a7 1466 vertex->SetParamP(track);
81e97e0d 1467 vertex->Update(fprimvertex);
44347160 1468 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1469 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1470 }else{
b75d63a7 1471 vertex->SetParamN(track);
81e97e0d 1472 vertex->Update(fprimvertex);
1473 //vertex->SetIndex(1,track.fESDtrack->GetID());
1474 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1475 }
1476 vertex->SetStatus(vertex->GetStatus()+1);
1477 }else{
44347160 1478 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1479 }
1480 }
81e97e0d 1481 }
afd25725 1482 }
1483
e43c066c 1484}
44347160 1485//------------------------------------------------------------------------
e43c066c 1486AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1487{
1488 //--------------------------------------------------------------------
1489 //
1490 //
1491 return fgLayers[layer];
1492}
44347160 1493//------------------------------------------------------------------------
8221b41b 1494AliITStrackerMI::AliITSlayer::AliITSlayer():
1495fR(0),
1496fPhiOffset(0),
1497fNladders(0),
1498fZOffset(0),
1499fNdetectors(0),
1500fDetectors(0),
1501fN(0),
1502fDy5(0),
1503fDy10(0),
1504fDy20(0),
1505fClustersCs(0),
1506fClusterIndexCs(0),
1507fYcs(0),
1508fZcs(0),
1509fNcs(0),
1510fCurrentSlice(-1),
d9ead1a0 1511fZmin(0),
8221b41b 1512fZmax(0),
1513fYmin(0),
1514fYmax(0),
1515fI(0),
1516fImax(0),
1517fSkip(0),
1518fAccepted(0),
d9ead1a0 1519fRoad(0),
1520fMaxSigmaClY(0),
1521fMaxSigmaClZ(0),
1522fNMaxSigmaCl(3)
1523{
e43c066c 1524 //--------------------------------------------------------------------
1525 //default AliITSlayer constructor
1526 //--------------------------------------------------------------------
e50912db 1527 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1528 fClusterWeight[i]=0;
1529 fClusterTracks[0][i]=-1;
1530 fClusterTracks[1][i]=-1;
1531 fClusterTracks[2][i]=-1;
9cd19c63 1532 fClusterTracks[3][i]=-1;
1533 fY[i]=0;
1534 fZ[i]=0;
1535 }
1536 fYB[0]=0;
1537 fYB[1]=0;
1538
4edc3c8c 1539 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
9cd19c63 1540 for (Int_t j1=0; j1<6; j1++) {
1541 fClusters5[j1][j]=0;
1542 fClusterIndex5[j1][j]=-1;
1543 fY5[j1][j]=0;
1544 fZ5[j1][j]=0;
1545 fN5[j1]=0;
1546 fBy5[j1][0]=0;
1547 fBy5[j1][1]=0;
1548 }
1549 }
1550
4edc3c8c 1551 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
9cd19c63 1552 for (Int_t j1=0; j1<11; j1++) {
1553 fClusters10[j1][j]=0;
1554 fClusterIndex10[j1][j]=-1;
1555 fY10[j1][j]=0;
1556 fZ10[j1][j]=0;
1557 fN10[j1]=0;
1558 fBy10[j1][0]=0;
1559 fBy10[j1][1]=0;
1560 }
e43c066c 1561 }
9cd19c63 1562
4edc3c8c 1563 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
9cd19c63 1564 for (Int_t j1=0; j1<21; j1++) {
1565 fClusters20[j1][j]=0;
1566 fClusterIndex20[j1][j]=-1;
1567 fY20[j1][j]=0;
1568 fZ20[j1][j]=0;
1569 fN20[j1]=0;
1570 fBy20[j1][0]=0;
1571 fBy20[j1][1]=0;
1572 }
1573 }
4edc3c8c 1574 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
e8c2bf0d 1575 fClusters[i]=NULL;
1576 fClusterIndex[i]=0;
1577 }
e43c066c 1578}
44347160 1579//------------------------------------------------------------------------
e43c066c 1580AliITStrackerMI::AliITSlayer::
8221b41b 1581AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1582fR(r),
1583fPhiOffset(p),
1584fNladders(nl),
1585fZOffset(z),
1586fNdetectors(nd),
1587fDetectors(0),
1588fN(0),
1589fDy5(0),
1590fDy10(0),
1591fDy20(0),
1592fClustersCs(0),
1593fClusterIndexCs(0),
1594fYcs(0),
1595fZcs(0),
1596fNcs(0),
1597fCurrentSlice(-1),
d9ead1a0 1598fZmin(0),
8221b41b 1599fZmax(0),
1600fYmin(0),
1601fYmax(0),
1602fI(0),
1603fImax(0),
1604fSkip(0),
1605fAccepted(0),
d9ead1a0 1606fRoad(0),
1607fMaxSigmaClY(0),
1608fMaxSigmaClZ(0),
1609fNMaxSigmaCl(3) {
e43c066c 1610 //--------------------------------------------------------------------
1611 //main AliITSlayer constructor
1612 //--------------------------------------------------------------------
e43c066c 1613 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1614 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
9cd19c63 1615
1616 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1617 fClusterWeight[i]=0;
1618 fClusterTracks[0][i]=-1;
1619 fClusterTracks[1][i]=-1;
1620 fClusterTracks[2][i]=-1;
1621 fClusterTracks[3][i]=-1;
1622 fY[i]=0;
1623 fZ[i]=0;
1624 }
1625
1626 fYB[0]=0;
1627 fYB[1]=0;
1628
4edc3c8c 1629 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
9cd19c63 1630 for (Int_t j1=0; j1<6; j1++) {
1631 fClusters5[j1][j]=0;
1632 fClusterIndex5[j1][j]=-1;
1633 fY5[j1][j]=0;
1634 fZ5[j1][j]=0;
1635 fN5[j1]=0;
1636 fBy5[j1][0]=0;
1637 fBy5[j1][1]=0;
1638 }
1639 }
1640
4edc3c8c 1641 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
9cd19c63 1642 for (Int_t j1=0; j1<11; j1++) {
1643 fClusters10[j1][j]=0;
1644 fClusterIndex10[j1][j]=-1;
1645 fY10[j1][j]=0;
1646 fZ10[j1][j]=0;
1647 fN10[j1]=0;
1648 fBy10[j1][0]=0;
1649 fBy10[j1][1]=0;
1650 }
1651 }
1652
4edc3c8c 1653 for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
9cd19c63 1654 for (Int_t j1=0; j1<21; j1++) {
1655 fClusters20[j1][j]=0;
1656 fClusterIndex20[j1][j]=-1;
1657 fY20[j1][j]=0;
1658 fZ20[j1][j]=0;
1659 fN20[j1]=0;
1660 fBy20[j1][0]=0;
1661 fBy20[j1][1]=0;
1662 }
1663 }
4edc3c8c 1664 for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
e8c2bf0d 1665 fClusters[i]=NULL;
1666 fClusterIndex[i]=0;
1667 }
e43c066c 1668}
225cff59 1669/*
44347160 1670//------------------------------------------------------------------------
8221b41b 1671AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1672fR(layer.fR),
1673fPhiOffset(layer.fPhiOffset),
1674fNladders(layer.fNladders),
1675fZOffset(layer.fZOffset),
1676fNdetectors(layer.fNdetectors),
1677fDetectors(layer.fDetectors),
1678fN(layer.fN),
1679fDy5(layer.fDy5),
1680fDy10(layer.fDy10),
1681fDy20(layer.fDy20),
1682fClustersCs(layer.fClustersCs),
1683fClusterIndexCs(layer.fClusterIndexCs),
1684fYcs(layer.fYcs),
1685fZcs(layer.fZcs),
1686fNcs(layer.fNcs),
1687fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1688fZmin(layer.fZmin),
8221b41b 1689fZmax(layer.fZmax),
1690fYmin(layer.fYmin),
1691fYmax(layer.fYmax),
1692fI(layer.fI),
1693fImax(layer.fImax),
1694fSkip(layer.fSkip),
1695fAccepted(layer.fAccepted),
d9ead1a0 1696fRoad(layer.fRoad),
1697fMaxSigmaClY(layer.fMaxSigmaClY),
1698fMaxSigmaClZ(layer.fMaxSigmaClZ),
1699fNMaxSigmaCl(layer.fNMaxSigmaCl)
1700{
8221b41b 1701 //Copy constructor
1702}
225cff59 1703*/
44347160 1704//------------------------------------------------------------------------
e43c066c 1705AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1706 //--------------------------------------------------------------------
1707 // AliITSlayer destructor
1708 //--------------------------------------------------------------------
23197852 1709 delete [] fDetectors;
e43c066c 1710 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1711 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1712 fClusterWeight[i]=0;
1713 fClusterTracks[0][i]=-1;
1714 fClusterTracks[1][i]=-1;
1715 fClusterTracks[2][i]=-1;
1716 fClusterTracks[3][i]=-1;
1717 }
1718}
44347160 1719//------------------------------------------------------------------------
e43c066c 1720void AliITStrackerMI::AliITSlayer::ResetClusters() {
1721 //--------------------------------------------------------------------
1722 // This function removes loaded clusters
1723 //--------------------------------------------------------------------
1724 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1725 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1726 fClusterWeight[i]=0;
1727 fClusterTracks[0][i]=-1;
1728 fClusterTracks[1][i]=-1;
1729 fClusterTracks[2][i]=-1;
1730 fClusterTracks[3][i]=-1;
1731 }
1732
1733 fN=0;
1734 fI=0;
1735}
44347160 1736//------------------------------------------------------------------------
e43c066c 1737void AliITStrackerMI::AliITSlayer::ResetWeights() {
1738 //--------------------------------------------------------------------
1739 // This function reset weights of the clusters
1740 //--------------------------------------------------------------------
e50912db 1741 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1742 fClusterWeight[i]=0;
1743 fClusterTracks[0][i]=-1;
1744 fClusterTracks[1][i]=-1;
1745 fClusterTracks[2][i]=-1;
1746 fClusterTracks[3][i]=-1;
1747 }
1748 for (Int_t i=0; i<fN;i++) {
00a7cc50 1749 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1750 if (cl&&cl->IsUsed()) cl->Use();
1751 }
1752
1753}
44347160 1754//------------------------------------------------------------------------
e43c066c 1755void AliITStrackerMI::AliITSlayer::ResetRoad() {
1756 //--------------------------------------------------------------------
1757 // This function calculates the road defined by the cluster density
1758 //--------------------------------------------------------------------
1759 Int_t n=0;
1760 for (Int_t i=0; i<fN; i++) {
1761 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1762 }
afd25725 1763 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1764}
44347160 1765//------------------------------------------------------------------------
afd25725 1766Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1767 //--------------------------------------------------------------------
1768 //This function adds a cluster to this layer
1769 //--------------------------------------------------------------------
e50912db 1770 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1771 return 1;
1772 }
1773 fCurrentSlice=-1;
afd25725 1774 fClusters[fN]=cl;
1d4090b7 1775 fN++;
afd25725 1776 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1777 //AD
1778 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1779 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1780 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1781 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1782 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1783 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1784 //AD
1785 /*
afd25725 1786 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1787 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1788 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1789 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1790 */
e43c066c 1791 return 0;
1792}
44347160 1793//------------------------------------------------------------------------
e43c066c 1794void AliITStrackerMI::AliITSlayer::SortClusters()
1795{
1796 //
1797 //sort clusters
1798 //
00a7cc50 1799 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1800 Float_t *z = new Float_t[fN];
1801 Int_t * index = new Int_t[fN];
1802 //
d9ead1a0 1803 fMaxSigmaClY=0.; //AD
1804 fMaxSigmaClZ=0.; //AD
1805
1d4090b7 1806 for (Int_t i=0;i<fN;i++){
1807 z[i] = fClusters[i]->GetZ();
d9ead1a0 1808 // save largest errors in y and z for this layer
1809 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1810 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1811 }
1812 TMath::Sort(fN,z,index,kFALSE);
1813 for (Int_t i=0;i<fN;i++){
1814 clusters[i] = fClusters[index[i]];
1815 }
1816 //
1817 for (Int_t i=0;i<fN;i++){
1818 fClusters[i] = clusters[i];
1819 fZ[i] = fClusters[i]->GetZ();
1820 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1821 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1822 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1823 fY[i] = y;
1824 }
1825 delete[] index;
1826 delete[] z;
1827 delete[] clusters;
1828 //
1829
e43c066c 1830 fYB[0]=10000000;
1831 fYB[1]=-10000000;
1832 for (Int_t i=0;i<fN;i++){
1833 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1834 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1835 fClusterIndex[i] = i;
1836 }
1837 //
1838 // fill slices
1839 fDy5 = (fYB[1]-fYB[0])/5.;
1840 fDy10 = (fYB[1]-fYB[0])/10.;
1841 fDy20 = (fYB[1]-fYB[0])/20.;
1842 for (Int_t i=0;i<6;i++) fN5[i] =0;
1843 for (Int_t i=0;i<11;i++) fN10[i]=0;
1844 for (Int_t i=0;i<21;i++) fN20[i]=0;
1845 //
1846 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;}
1847 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;}
1848 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;}
1849 //
1850 //
1d4090b7 1851 for (Int_t i=0;i<fN;i++)
1852 for (Int_t irot=-1;irot<=1;irot++){
1853 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1854 // slice 5
1855 for (Int_t slice=0; slice<6;slice++){
e50912db 1856 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1857 fClusters5[slice][fN5[slice]] = fClusters[i];
1858 fY5[slice][fN5[slice]] = curY;
1859 fZ5[slice][fN5[slice]] = fZ[i];
1860 fClusterIndex5[slice][fN5[slice]]=i;
1861 fN5[slice]++;
1862 }
e43c066c 1863 }
1d4090b7 1864 // slice 10
1865 for (Int_t slice=0; slice<11;slice++){
e50912db 1866 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1867 fClusters10[slice][fN10[slice]] = fClusters[i];
1868 fY10[slice][fN10[slice]] = curY;
1869 fZ10[slice][fN10[slice]] = fZ[i];
1870 fClusterIndex10[slice][fN10[slice]]=i;
1871 fN10[slice]++;
1872 }
e43c066c 1873 }
1d4090b7 1874 // slice 20
1875 for (Int_t slice=0; slice<21;slice++){
e50912db 1876 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1877 fClusters20[slice][fN20[slice]] = fClusters[i];
1878 fY20[slice][fN20[slice]] = curY;
1879 fZ20[slice][fN20[slice]] = fZ[i];
1880 fClusterIndex20[slice][fN20[slice]]=i;
1881 fN20[slice]++;
1882 }
1883 }
e43c066c 1884 }
1d4090b7 1885
1886 //
1887 // consistency check
1888 //
1889 for (Int_t i=0;i<fN-1;i++){
1890 if (fZ[i]>fZ[i+1]){
ae00569a 1891 printf("Bug\n");
e43c066c 1892 }
1893 }
1d4090b7 1894 //
1895 for (Int_t slice=0;slice<21;slice++)
1896 for (Int_t i=0;i<fN20[slice]-1;i++){
1897 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1898 printf("Bug\n");
1d4090b7 1899 }
1900 }
1901
1902
e43c066c 1903}
44347160 1904//------------------------------------------------------------------------
e43c066c 1905Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1906 //--------------------------------------------------------------------
1907 // This function returns the index of the nearest cluster
1908 //--------------------------------------------------------------------
1909 Int_t ncl=0;
1910 const Float_t *zcl;
1911 if (fCurrentSlice<0) {
1912 ncl = fN;
1913 zcl = fZ;
1914 }
1915 else{
1916 ncl = fNcs;
1917 zcl = fZcs;;
1918 }
1919
1920 if (ncl==0) return 0;
1921 Int_t b=0, e=ncl-1, m=(b+e)/2;
1922 for (; b<e; m=(b+e)/2) {
1923 // if (z > fClusters[m]->GetZ()) b=m+1;
1924 if (z > zcl[m]) b=m+1;
1925 else e=m;
1926 }
1927 return m;
1928}
44347160 1929//------------------------------------------------------------------------
1c97ce2f 1930Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1931 //--------------------------------------------------------------------
1932 // This function computes the rectangular road for this track
1933 //--------------------------------------------------------------------
1934
1935
1936 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1937 // take into account the misalignment: propagate track to misaligned detector plane
1938 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1939
1940 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1941 TMath::Sqrt(track->GetSigmaZ2() +
1942 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1943 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1944 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1945 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1946 TMath::Sqrt(track->GetSigmaY2() +
1947 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1948 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1949 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1950
1951 // track at boundary between detectors, enlarge road
1952 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1953 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1954 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1955 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1956 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1957 Float_t tgl = TMath::Abs(track->GetTgl());
1958 if (tgl > 1.) tgl=1.;
1959 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1960 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1961 Float_t snp = TMath::Abs(track->GetSnp());
1962 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1963 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1964 } // boundary
1965
1966 // add to the road a term (up to 2-3 mm) to deal with misalignments
1967 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1968 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1969
1970 Double_t r = fgLayers[ilayer].GetR();
1971 zmin = track->GetZ() - dz;
1972 zmax = track->GetZ() + dz;
1973 ymin = track->GetY() + r*det.GetPhi() - dy;
1974 ymax = track->GetY() + r*det.GetPhi() + dy;
1975
1976 // bring track back to idead detector plane
1977 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1978
1979 return kTRUE;
1980}
1981//------------------------------------------------------------------------
e43c066c 1982void AliITStrackerMI::AliITSlayer::
1983SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1984 //--------------------------------------------------------------------
1985 // This function sets the "window"
1986 //--------------------------------------------------------------------
1987
628e7bb0 1988 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1989 fYmin = ymin;
1990 fYmax = ymax;
1991 fZmin = zmin;
1992 fZmax = zmax;
1993 // AD
1994 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1995 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1996 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1997 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1998 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1999
e43c066c 2000 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 2001 if (ymiddle<fYB[0]) {
2002 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
2003 } else if (ymiddle>fYB[1]) {
2004 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 2005 }
ae00569a 2006
e43c066c 2007 //
2008 fCurrentSlice =-1;
2009 // defualt take all
2010 fClustersCs = fClusters;
2011 fClusterIndexCs = fClusterIndex;
2012 fYcs = fY;
2013 fZcs = fZ;
2014 fNcs = fN;
628e7bb0 2015 //
e43c066c 2016 //is in 20 slice?
2017 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
2018 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
2019 if (slice<0) slice=0;
2020 if (slice>20) slice=20;
2021 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
2022 if (isOK) {
2023 fCurrentSlice=slice;
2024 fClustersCs = fClusters20[fCurrentSlice];
2025 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
2026 fYcs = fY20[fCurrentSlice];
2027 fZcs = fZ20[fCurrentSlice];
2028 fNcs = fN20[fCurrentSlice];
2029 }
2030 }
2031 //
2032 //is in 10 slice?
2033 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
2034 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
2035 if (slice<0) slice=0;
2036 if (slice>10) slice=10;
2037 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
2038 if (isOK) {
2039 fCurrentSlice=slice;
2040 fClustersCs = fClusters10[fCurrentSlice];
2041 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
2042 fYcs = fY10[fCurrentSlice];
2043 fZcs = fZ10[fCurrentSlice];
2044 fNcs = fN10[fCurrentSlice];
2045 }
2046 }
2047 //
2048 //is in 5 slice?
2049 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
2050 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
2051 if (slice<0) slice=0;
2052 if (slice>5) slice=5;
2053 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 2054 if (isOK) {
e43c066c 2055 fCurrentSlice=slice;
2056 fClustersCs = fClusters5[fCurrentSlice];
2057 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
2058 fYcs = fY5[fCurrentSlice];
2059 fZcs = fZ5[fCurrentSlice];
2060 fNcs = fN5[fCurrentSlice];
2061 }
2062 }
628e7bb0 2063 //
d9ead1a0 2064 fI = FindClusterIndex(fZmin);
2065 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
2066 fSkip = 0;
2067 fAccepted = 0;
6518a6c5 2068
2069 return;
e43c066c 2070}
44347160 2071//------------------------------------------------------------------------
628e7bb0 2072Int_t AliITStrackerMI::AliITSlayer::
2073FindDetectorIndex(Double_t phi, Double_t z) const {
2074 //--------------------------------------------------------------------
2075 //This function finds the detector crossed by the track
2076 //--------------------------------------------------------------------
31fb8575 2077 Double_t dphi;
2078 if (fZOffset<0) // old geometry
2079 dphi = -(phi-fPhiOffset);
2080 else // new geometry
2081 dphi = phi-fPhiOffset;
2082
6518a6c5 2083
628e7bb0 2084 if (dphi < 0) dphi += 2*TMath::Pi();
2085 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
2086 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
2087 if (np>=fNladders) np-=fNladders;
2088 if (np<0) np+=fNladders;
2089
6518a6c5 2090
628e7bb0 2091 Double_t dz=fZOffset-z;
6518a6c5 2092 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
2093 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 2094 if (nz>=fNdetectors || nz<0) {
2095 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2096 return -1;
2097 }
628e7bb0 2098
23197852 2099 // ad hoc correction for 3rd ladder of SDD inner layer,
2100 // which is reversed (rotated by pi around local y)
2101 // this correction is OK only from AliITSv11Hybrid onwards
2102 if (GetR()>12. && GetR()<20.) { // SDD inner
2103 if(np==2) { // 3rd ladder
6801b453 2104 Double_t posMod252[3];
2105 AliITSgeomTGeo::GetTranslation(252,posMod252);
2106 // check the Z coordinate of Mod 252: if negative
2107 // (old SDD geometry in AliITSv11Hybrid)
2108 // the swap of numeration whould be applied
2109 if(posMod252[2]<0.){
2110 nz = (fNdetectors-1) - nz;
2111 }
2112 }
23197852 2113 }
2114 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2115
2116
628e7bb0 2117 return np*fNdetectors + nz;
2118}
44347160 2119//------------------------------------------------------------------------
ae00569a 2120const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
2121{
e43c066c 2122 //--------------------------------------------------------------------
2123 // This function returns clusters within the "window"
2124 //--------------------------------------------------------------------
2125
ae00569a 2126 if (fCurrentSlice<0) {
e43c066c 2127 Double_t rpi2 = 2.*fR*TMath::Pi();
2128 for (Int_t i=fI; i<fImax; i++) {
2129 Double_t y = fY[i];
d9ead1a0 2130 Double_t z = fZ[i];
e43c066c 2131 if (fYmax<y) y -= rpi2;
1d4090b7 2132 if (fYmin>y) y += rpi2;
e43c066c 2133 if (y<fYmin) continue;
2134 if (y>fYmax) continue;
d9ead1a0 2135 // AD
2136 // skip clusters that are in "extended" road but they
2137 // 3sigma error does not touch the original road
2138 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
2139 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
2140 //
88e3c173 2141 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2142 ci=i;
ae00569a 2143 if (!test) fI=i+1;
e43c066c 2144 return fClusters[i];
2145 }
ae00569a 2146 } else {
e43c066c 2147 for (Int_t i=fI; i<fImax; i++) {
2148 if (fYcs[i]<fYmin) continue;
2149 if (fYcs[i]>fYmax) continue;
88e3c173 2150 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2151 ci=fClusterIndexCs[i];
ae00569a 2152 if (!test) fI=i+1;
e43c066c 2153 return fClustersCs[i];
2154 }
2155 }
2156 return 0;
2157}
44347160 2158//------------------------------------------------------------------------
e43c066c 2159Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
2160const {
2161 //--------------------------------------------------------------------
afd25725 2162 // This function returns the layer thickness at this point (units X0)
e43c066c 2163 //--------------------------------------------------------------------
2164 Double_t d=0.0085;
e50912db 2165 x0=AliITSRecoParam::GetX0Air();
e43c066c 2166 if (43<fR&&fR<45) { //SSD2
2167 Double_t dd=0.0034;
2168 d=dd;
2169 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2170 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2171 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2172 for (Int_t i=0; i<12; i++) {
2173 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2174 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2175 d+=0.0034;
2176 break;
2177 }
2178 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2179 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2180 d+=0.0034;
2181 break;
2182 }
2183 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2184 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2185 }
2186 } else
2187 if (37<fR&&fR<41) { //SSD1
2188 Double_t dd=0.0034;
2189 d=dd;
2190 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2191 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2192 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2193 for (Int_t i=0; i<11; i++) {
2194 if (TMath::Abs(z-3.9*i)<0.15) {
2195 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2196 d+=dd;
2197 break;
2198 }
2199 if (TMath::Abs(z+3.9*i)<0.15) {
2200 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2201 d+=dd;
2202 break;
2203 }
2204 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2205 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2206 }
2207 } else
2208 if (13<fR&&fR<26) { //SDD
2209 Double_t dd=0.0033;
2210 d=dd;
2211 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2212
2213 if (TMath::Abs(y-1.80)<0.55) {
2214 d+=0.016;
2215 for (Int_t j=0; j<20; j++) {
2216 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2217 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2218 }
2219 }
2220 if (TMath::Abs(y+1.80)<0.55) {
2221 d+=0.016;
2222 for (Int_t j=0; j<20; j++) {
2223 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2224 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2225 }
2226 }
2227
2228 for (Int_t i=0; i<4; i++) {
2229 if (TMath::Abs(z-7.3*i)<0.60) {
2230 d+=dd;
2231 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2232 break;
2233 }
2234 if (TMath::Abs(z+7.3*i)<0.60) {
2235 d+=dd;
2236 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2237 break;
2238 }
2239 }
2240 } else
2241 if (6<fR&&fR<8) { //SPD2
2242 Double_t dd=0.0063; x0=21.5;
2243 d=dd;
2244 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2245 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2246 } else
2247 if (3<fR&&fR<5) { //SPD1
2248 Double_t dd=0.0063; x0=21.5;
2249 d=dd;
2250 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2251 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2252 }
2253
2254 return d;
2255}
44347160 2256//------------------------------------------------------------------------
23197852 2257AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2258fR(det.fR),
1c97ce2f 2259fRmisal(det.fRmisal),
23197852 2260fPhi(det.fPhi),
2261fSinPhi(det.fSinPhi),
2262fCosPhi(det.fCosPhi),
2263fYmin(det.fYmin),
2264fYmax(det.fYmax),
2265fZmin(det.fZmin),
2266fZmax(det.fZmax),
2267fIsBad(det.fIsBad),
2268fNChips(det.fNChips),
2269fChipIsBad(det.fChipIsBad)
2270{
2271 //Copy constructor
2272}
2273//------------------------------------------------------------------------
2274void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2275 const AliITSDetTypeRec *detTypeRec)
23197852 2276{
2277 //--------------------------------------------------------------------
2278 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2279 //--------------------------------------------------------------------
2280
2281 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2282 // while in the tracker they start from 0 for each layer
2283 for(Int_t il=0; il<ilayer; il++)
2284 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2285
2286 Int_t detType;
2287 if (ilayer==0 || ilayer==1) { // ---------- SPD
2288 detType = 0;
2289 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2290 detType = 1;
2291 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2292 detType = 2;
2293 } else {
2294 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2295 return;
2296 }
2297
2298 // Get calibration from AliITSDetTypeRec
2299 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2300 calib->SetModuleIndex(idet);
23197852 2301 AliITSCalibration *calibSPDdead = 0;
2302 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2303 if (calib->IsBad() ||
2304 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2305 {
2306 SetBad();
359ac74d 2307 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2308 }
2309
2310 // Get segmentation from AliITSDetTypeRec
2311 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2312
2313 // Read info about bad chips
2314 fNChips = segm->GetMaximumChipIndex()+1;
2315 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2316 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2317 fChipIsBad = new Bool_t[fNChips];
2318 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2319 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2320 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2321 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2322 }
2323
2324 return;
2325}
2326//------------------------------------------------------------------------
e50912db 2327Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2328{
2329 //--------------------------------------------------------------------
afd25725 2330 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2331 //--------------------------------------------------------------------
e43c066c 2332
e50912db 2333 if(fUseTGeo!=0) {
2334 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2335 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2336 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2337 }
2338
afd25725 2339 // beam pipe
e50912db 2340 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2341 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2342
2343 // layers
2344 Double_t x0=0;
e43c066c 2345 Double_t xn=fgLayers[fI].GetR();
2346 for (Int_t i=0; i<fI; i++) {
2347 Double_t xi=fgLayers[i].GetR();
e50912db 2348 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2349 d+=dLayer*xi*xi;
e43c066c 2350 }
2351
afd25725 2352 // shields
e43c066c 2353 if (fI>1) {
e50912db 2354 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2355 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2356 }
e43c066c 2357 if (fI>3) {
e50912db 2358 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2359 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2360 }
e43c066c 2361 return d/(xn*xn);
2362}
a4354152 2363
2364//------------------------------------------------------------------------
2365Int_t AliITStrackerMI::GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS)
2366{
2367 //--------------------------------------------------------------------
2368 // Returns the array of layers between the current layer and the vertex
2369 //--------------------------------------------------------------------
2370 //
2371 if(fUseTGeo!=0) {
2372 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2373 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2374 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2375 }
2376
2377 int nl = 0;
2378 double x0 = 0;
2379 for (int il=fI;il--;) {
2380 //
2381 if (il==3) {
2382 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2383 xMS[nl++] = AliITSRecoParam::GetrInsideShield(1);
2384 }
2385 else if (il==1) {
2386 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2387 xMS[nl++] = AliITSRecoParam::GetrInsideShield(0);
2388 }
2389 //
2390 x2x0MS[nl] = (fUseTGeo==0 ? fgLayers[il].GetThickness(0,0,x0) : fxOverX0Layer[il]);
2391 xMS[nl++] = fgLayers[il].GetR();
2392 //
2393 }
2394 //
2395 // beam pipe
2396 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2397 xMS[nl++] = AliITSRecoParam::GetrPipe();
2398 //
2399 return nl;
2400}
2401
2402
44347160 2403//------------------------------------------------------------------------
e43c066c 2404Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2405 //-------------------------------------------------------------------
e43c066c 2406 // This function returns number of clusters within the "window"
2407 //--------------------------------------------------------------------
2408 Int_t ncl=0;
2409 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2410 const AliITSRecPoint *c=fClusters[i];
e43c066c 2411 if (c->GetZ() > fZmax) break;
2412 if (c->IsUsed()) continue;
2413 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2414 Double_t y=fR*det.GetPhi() + c->GetY();
2415
2416 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2417 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2418
2419 if (y<fYmin) continue;
2420 if (y>fYmax) continue;
2421 ncl++;
2422 }
2423 return ncl;
2424}
44347160 2425//------------------------------------------------------------------------
ae00569a 2426Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2427 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2428{
e43c066c 2429 //--------------------------------------------------------------------
ae00569a 2430 // This function refits the track "track" at the position "x" using
2431 // the clusters from "clusters"
ef7253ac 2432 // If "extra"==kTRUE,
ae00569a 2433 // the clusters from overlapped modules get attached to "track"
7167ae53 2434 // If "planeff"==kTRUE,
2435 // special approach for plane efficiency evaluation is applyed
e43c066c 2436 //--------------------------------------------------------------------
6518a6c5 2437
e50912db 2438 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2439 Int_t k;
e50912db 2440 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2441 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2442 for (k=0; k<nc; k++) {
ae00569a 2443 Int_t idx=clusters->GetClusterIndex(k);
2444 Int_t ilayer=(idx&0xf0000000)>>28;
2445 index[ilayer]=idx;
e43c066c 2446 }
67c1e979 2447
7167ae53 2448 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2449}
44347160 2450//------------------------------------------------------------------------
ae00569a 2451Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2452 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2453{
67c1e979 2454 //--------------------------------------------------------------------
ae00569a 2455 // This function refits the track "track" at the position "x" using
67c1e979 2456 // the clusters from array
ae00569a 2457 // If "extra"==kTRUE,
2458 // the clusters from overlapped modules get attached to "track"
7167ae53 2459 // If "planeff"==kTRUE,
2460 // special approach for plane efficiency evaluation is applyed
67c1e979 2461 //--------------------------------------------------------------------
e50912db 2462 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2463 Int_t k;
e50912db 2464 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2465 //
e50912db 2466 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2467 index[k]=clusters[k];
67c1e979 2468 }
2469
74008278 2470 // special for cosmics and TPC prolonged tracks:
269709f8 2471 // propagate to the innermost of:
2472 // - innermost layer crossed by the track
2473 // - innermost layer where a cluster was associated to the track
74008278 2474 static AliITSRecoParam *repa = NULL;
2475 if(!repa){
2476 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2477 if(!repa){
2478 repa = AliITSRecoParam::GetHighFluxParam();
2479 AliWarning("Using default AliITSRecoParam class");
2480 }
2481 }
2482 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2483 ULong_t trStatus=0;
2484 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2485 Int_t innermostlayer=0;
15f91fcd 2486 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2487 innermostlayer=5;
2488 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2489 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2490 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2491 index[innermostlayer] >= 0 ) break;
74008278 2492 }
269709f8 2493
74008278 2494 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2495 }
afd25725 2496
ae00569a 2497 Int_t modstatus=1; // found
2498 Float_t xloc,zloc;
67c1e979 2499 Int_t from, to, step;
ae00569a 2500 if (xx > track->GetX()) {
e50912db 2501 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2502 step=+1;
2503 } else {
e50912db 2504 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2505 step=-1;
2506 }
ae00569a 2507 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2508
ae00569a 2509 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2510 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2511 Double_t r=layer.GetR();
4fa7f7d1 2512
afd25725 2513 if (step<0 && xx>r) break;
2514
2515 // material between SSD and SDD, SDD and SPD
6518a6c5 2516 Double_t hI=ilayer-0.5*step;
e50912db 2517 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2518 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2519 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2520 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2521
ae00569a 2522
afd25725 2523 Double_t oldGlobXYZ[3];
d1181f10 2524 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2525
67178f34 2526 // continue if we are already beyond this layer
2527 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2528 if(step>0 && oldGlobR > r) continue; // going outward
2529 if(step<0 && oldGlobR < r) continue; // going inward
2530
8602c008 2531 Double_t phi,z;
ae00569a 2532 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2533
67c1e979 2534 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2535
2536 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2537 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2538 if (skip==2) {
ae00569a 2539 modstatus = 4; // out in z
d1181f10 2540 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2541 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2542 }
7131593b 2543 // cross layer
2544 // apply correction for material of the current layer
2545 // add time if going outward
2546 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2547 continue;
2548 }
2549
e50912db 2550 if (idet<0) return kFALSE;
ae00569a 2551
4fa7f7d1 2552
67c1e979 2553 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2554 // only for ITS-SA tracks refit
2555 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2556 //
1c97ce2f 2557 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2558
ae00569a 2559 track->SetDetectorIndex(idet);
d1181f10 2560 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2561
23197852 2562 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2563
2564 const AliITSRecPoint *clAcc=0;
44347160 2565 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2566
6518a6c5 2567 Int_t idx=index[ilayer];
ae00569a 2568 if (idx>=0) { // cluster in this layer
2569 modstatus = 6; // no refit
2570 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2571 if (cl) {
2572 if (idet != cl->GetDetectorIndex()) {
2573 idet=cl->GetDetectorIndex();
a5d0fae6 2574 const AliITSdetector &detc=layer.GetDetector(idet);
2575 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2576 track->SetDetectorIndex(idet);
d1181f10 2577 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2578 }
ae00569a 2579 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2580 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2581 if (chi2<maxchi2) {
2582 clAcc=cl;
2583 maxchi2=chi2;
2584 modstatus = 1; // found
2585 } else {
7167ae53 2586 return kFALSE; //
ae00569a 2587 }
2588 }
2589 } else { // no cluster in this layer
2590 if (skip==1) {
2591 modstatus = 3; // skipped
0ed58a47 2592 // Plane Eff determination:
2593 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2594 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2595 UseTrackForPlaneEff(track,ilayer);
7167ae53 2596 }
ae00569a 2597 } else {
2598 modstatus = 5; // no cls in road
2599 // check dead
1c97ce2f 2600 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2601 dz = 0.5*(zmax-zmin);
2602 dy = 0.5*(ymax-ymin);
2603 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2604 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2605 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2606 }
e43c066c 2607 }
ae00569a 2608
2609 if (clAcc) {
2610 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2611 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2612 }
ae00569a 2613 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2614
2615
ef3508c5 2616 if (extra && clAcc) { // search for extra clusters in overlapped modules
ae00569a 2617 AliITStrackV2 tmp(*track);
1c97ce2f 2618 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2619 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2620
2621 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2622 Int_t idetExtra=-1;
a5d0fae6 2623 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2624 Double_t tolerance=0.1;
ae00569a 2625 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2626 // only clusters in another module! (overlaps)
2627 idetExtra = clExtra->GetDetectorIndex();
2628 if (idet == idetExtra) continue;
2629
a5d0fae6 2630 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2631
1c97ce2f 2632 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2633 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2634 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2635 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2636
2637 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2638 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2639 }
2640 if (cci>=0) {
2641 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2642 track->SetExtraModule(ilayer,idetExtra);
2643 }
2644 } // end search for extra clusters in overlapped modules
1c97ce2f 2645
afd25725 2646 // Correct for material of the current layer
7131593b 2647 // cross material
2648 // add time if going outward
ae00569a 2649 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2650 track->SetCheckInvariant(kTRUE);
ae00569a 2651 } // end loop on layers
2652
db355ee7 2653 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2654
e43c066c 2655 return kTRUE;
2656}
44347160 2657//------------------------------------------------------------------------
15dd636f 2658Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2659{
2660 //
2661 // calculate normalized chi2
2662 // return NormalizedChi2(track,0);
2663 Float_t chi2 = 0;
2664 Float_t sum=0;
2665 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2666 // track->fdEdxMismatch=0;
2667 Float_t dedxmismatch =0;
2668 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2669 if (mode<100){
2670 for (Int_t i = 0;i<6;i++){
9fd412a8 2671 if (track->GetClIndex(i)>=0){
e43c066c 2672 Float_t cerry, cerrz;
2673 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2674 else
b9671574 2675 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2676 cerry*=cerry;
2677 cerrz*=cerrz;
b9671574 2678 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2679 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2680 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2681 if (ratio<0.5) {
2682 cchi2+=(0.5-ratio)*10.;
2683 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2684 dedxmismatch+=(0.5-ratio)*10.;
2685 }
2686 }
2687 if (i<2 ||i>3){
b9671574 2688 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2689 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2690 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2691 if (i<2) chi2+=2*cl->GetDeltaProbability();
2692 }
2693 chi2+=cchi2;
2694 sum++;
2695 }
2696 }
b9671574 2697 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2698 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2699 }
2700 }
2701 else{
2702 for (Int_t i = 0;i<4;i++){
9fd412a8 2703 if (track->GetClIndex(i)>=0){
e43c066c 2704 Float_t cerry, cerrz;
2705 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2706 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2707 cerry*=cerry;
2708 cerrz*=cerrz;
b9671574 2709 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2710 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2711 sum++;
2712 }
2713 }
2714 for (Int_t i = 4;i<6;i++){
9fd412a8 2715 if (track->GetClIndex(i)>=0){
e43c066c 2716 Float_t cerry, cerrz;
2717 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2718 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2719 cerry*=cerry;
2720 cerrz*=cerrz;
2721 Float_t cerryb, cerrzb;
2722 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2723 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2724 cerryb*=cerryb;
2725 cerrzb*=cerrzb;
b9671574 2726 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2727 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2728 sum++;
2729 }
2730 }
2731 }
b9671574 2732 if (track->GetESDtrack()->GetTPCsignal()>85){
2733 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2734 if (ratio<0.5) {
2735 chi2+=(0.5-ratio)*5.;
2736 }
2737 if (ratio>2){
2738 chi2+=(ratio-2.0)*3;
2739 }
2740 }
2741 //
b9671574 2742 Double_t match = TMath::Sqrt(track->GetChi22());
2743 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2744 if (!track->GetConstrain()) {
2745 if (track->GetNumberOfClusters()>2) {
2746 match/=track->GetNumberOfClusters()-2.;
2747 } else {
2748 match=0;
2749 }
2750 }
e43c066c 2751 if (match<0) match=0;
f8720bda 2752
2753 // penalty factor for missing points (NDeadZone>0), but no penalty
2754 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2755 // or there is a dead from OCDB)
2756 Float_t deadzonefactor = 0.;
2757 if (track->GetNDeadZone()>0.) {
bf1cd124 2758 Int_t sumDeadZoneProbability=0;
2759 for(Int_t ilay=0;ilay<6;ilay++) {
2760 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2761 }
2762 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2763 if(nDeadZoneWithProbNot1>0) {
2764 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2765 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2766 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2767 Float_t one = 1.;
2768 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2769 deadzonefactor = 3.*(1.1-deadZoneProbability);
2770 }
2771 }
2772
b9671574 2773 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2774 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2775 1./(1.+track->GetNSkipped()));
a5a317a9 2776 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2777 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2778 return normchi2;
e43c066c 2779}
44347160 2780//------------------------------------------------------------------------
a70ed6ad 2781Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2782{
2783 //
2784 // return matching chi2 between two tracks
d1181f10 2785 Double_t largeChi2=1000.;
2786
15dd636f 2787 AliITStrackMI track3(*track2);
d1181f10 2788 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2789 TMatrixD vec(5,1);
6c94f330 2790 vec(0,0)=track1->GetY() - track3.GetY();
2791 vec(1,0)=track1->GetZ() - track3.GetZ();
2792 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2793 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2794 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2795 //
2796 TMatrixD cov(5,5);
6c94f330 2797 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2798 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2799 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2800 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2801 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2802
6c94f330 2803 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2804 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2805 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2806 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2807 //
6c94f330 2808 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2809 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2810 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2811 //
6c94f330 2812 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2813 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2814 //
6c94f330 2815 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2816
2817 cov.Invert();
2818 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2819 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2820 return chi2(0,0);
2821}
44347160 2822//------------------------------------------------------------------------
a70ed6ad 2823Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2824{
2825 //
afd25725 2826 // return probability that given point (characterized by z position and error)
2827 // is in SPD dead zone
bf1cd124 2828 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2829 //
afd25725 2830 Double_t probability = 0.;
bf1cd124 2831 Double_t nearestz = 0.,distz=0.;
2832 Int_t nearestzone = -1;
2833 Double_t mindistz = 1000.;
2834
2835 // find closest dead zone
2836 for (Int_t i=0; i<3; i++) {
2837 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2838 if (distz<mindistz) {
2839 nearestzone=i;
2840 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2841 mindistz=distz;
2842 }
2843 }
2844
2845 // too far from dead zone
2846 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2847
2848
afd25725 2849 Double_t zmin, zmax;
bf1cd124 2850 if (nearestzone==0) { // dead zone at z = -7
e50912db 2851 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2852 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2853 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2854 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2855 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2856 } else if (nearestzone==2) { // dead zone at z = +7
2857 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2858 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2859 } else {
2860 zmin = 0.;
2861 zmax = 0.;
e43c066c 2862 }
afd25725 2863 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2864 // dead zone)
bb7e41dd 2865 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2866 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2867 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2868 return probability;
2869}
44347160 2870//------------------------------------------------------------------------
a70ed6ad 2871Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2872{
2873 //
2874 // calculate normalized chi2
2875 Float_t chi2[6];
2876 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2877 Float_t ncl = 0;
2878 for (Int_t i = 0;i<6;i++){
b9671574 2879 if (TMath::Abs(track->GetDy(i))>0){
2880 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2881 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2882 ncl++;
2883 }
2884 else{chi2[i]=10000;}
2885 }
2886 Int_t index[6];
2887 TMath::Sort(6,chi2,index,kFALSE);
2888 Float_t max = float(ncl)*fac-1.;
2889 Float_t sumchi=0, sumweight=0;
2890 for (Int_t i=0;i<max+1;i++){
2891 Float_t weight = (i<max)?1.:(max+1.-i);
2892 sumchi+=weight*chi2[index[i]];
2893 sumweight+=weight;
2894 }
2895 Double_t normchi2 = sumchi/sumweight;
2896 return normchi2;
2897}
44347160 2898//------------------------------------------------------------------------
a70ed6ad 2899Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2900{
2901 //
2902 // calculate normalized chi2
2903 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2904 Int_t npoints = 0;
2905 Double_t res =0;
2906 for (Int_t i=0;i<6;i++){
b9671574 2907 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2908 Double_t sy1 = forwardtrack->GetSigmaY(i);
2909 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2910 Double_t sy2 = backtrack->GetSigmaY(i);
2911 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2912 if (i<2){ sy2=1000.;sz2=1000;}
2913 //
b9671574 2914 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2915 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2916 //
2917 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2918 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2919 //
2920 res+= nz0*nz0+ny0*ny0;
2921 npoints++;
2922 }
2923 if (npoints>1) return
6c23ffed 2924 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2925 //2*forwardtrack->fNUsed+
b9671574 2926 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2927 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2928 return 1000;
2929}
44347160 2930//------------------------------------------------------------------------
e43c066c 2931Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2932 //--------------------------------------------------------------------
2933 // Return pointer to a given cluster
2934 //--------------------------------------------------------------------
2935 Int_t l=(index & 0xf0000000) >> 28;
2936 Int_t c=(index & 0x0fffffff) >> 00;
2937 return fgLayers[l].GetWeight(c);
2938}
44347160 2939//------------------------------------------------------------------------
a70ed6ad 2940void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2941{
2942 //---------------------------------------------
2943 // register track to the list
628e7bb0 2944 //
b9671574 2945 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2946 //
2947 //
e43c066c 2948 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2949 Int_t index = track->GetClusterIndex(icluster);
2950 Int_t l=(index & 0xf0000000) >> 28;
2951 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2952 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2953 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2954 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2955 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2956 break;
2957 }
2958 }
2959 }
2960}
44347160 2961//------------------------------------------------------------------------
a70ed6ad 2962void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2963{
2964 //---------------------------------------------
2965 // unregister track from the list
2966 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2967 Int_t index = track->GetClusterIndex(icluster);
2968 Int_t l=(index & 0xf0000000) >> 28;
2969 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2970 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2971 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2972 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2973 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2974 }
2975 }
2976 }
2977}
44347160 2978//------------------------------------------------------------------------
00a7cc50 2979Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2980{
2981 //-------------------------------------------------------------
2982 //get number of shared clusters
2983 //-------------------------------------------------------------
2984 Float_t shared=0;
2985 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2986 // mean number of clusters
2987 Float_t *ny = GetNy(id), *nz = GetNz(id);
2988
2989
2990 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2991 Int_t index = track->GetClusterIndex(icluster);
2992 Int_t l=(index & 0xf0000000) >> 28;
2993 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2994 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 2995 // if (ny[l]<1.e-13){
2996 // printf("problem\n");
2997 // }
00a7cc50 2998 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2999 Float_t weight=1;
3000 //
3001 Float_t deltan = 0;
3002 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3003 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3004 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3005 if (l<2 || l>3){
3006 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3007 }
3008 else{
3009 deltan = (cl->GetNz()-nz[l]);
3010 }
3011 if (deltan>2.0) continue; // extended - highly probable shared cluster
3012 weight = 2./TMath::Max(3.+deltan,2.);
3013 //
3014 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 3015 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 3016 list[l]=index;
00a7cc50 3017 clist[l] = (AliITSRecPoint*)GetCluster(index);
25015f7a 3018 track->SetSharedWeight(l,weight);
e43c066c 3019 shared+=weight;
3020 break;
3021 }
3022 }
3023 }
b9671574 3024 track->SetNUsed(shared);
e43c066c 3025 return shared;
3026}
44347160 3027//------------------------------------------------------------------------
a70ed6ad 3028Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 3029{
3030 //
3031 // find first shared track
3032 //
3033 // mean number of clusters
3034 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
3035 //
3036 for (Int_t i=0;i<6;i++) overlist[i]=-1;
3037 Int_t sharedtrack=100000;
3038 Int_t tracks[24],trackindex=0;
3039 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
3040 //
3041 for (Int_t icluster=0;icluster<6;icluster++){
3042 if (clusterlist[icluster]<0) continue;
3043 Int_t index = clusterlist[icluster];
3044 Int_t l=(index & 0xf0000000) >> 28;
3045 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 3046 // if (ny[l]<1.e-13){
3047 // printf("problem\n");
3048 // }
b9671574 3049 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 3050 //if (l>3) continue;
00a7cc50 3051 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3052 //
3053 Float_t deltan = 0;
3054 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3055 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3056 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3057 if (l<2 || l>3){
3058 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3059 }
3060 else{
3061 deltan = (cl->GetNz()-nz[l]);
3062 }
3063 if (deltan>2.0) continue; // extended - highly probable shared cluster
3064 //
3065 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3066 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3067 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
3068 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 3069 trackindex++;
3070 }
3071 }
3072 }
3073 if (trackindex==0) return -1;
3074 if (trackindex==1){
3075 sharedtrack = tracks[0];
3076 }else{
3077 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
3078 else{
3079 //
a5d0fae6 3080 Int_t tracks2[24], cluster[24];
3081 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 3082 Int_t index =0;
3083 //
3084 for (Int_t i=0;i<trackindex;i++){
3085 if (tracks[i]<0) continue;
a5d0fae6 3086 tracks2[index] = tracks[i];
e43c066c 3087 cluster[index]++;
3088 for (Int_t j=i+1;j<trackindex;j++){
3089 if (tracks[j]<0) continue;
3090 if (tracks[j]==tracks[i]){
3091 cluster[index]++;
3092 tracks[j]=-1;
3093 }
3094 }
3095 index++;
3096 }
3097 Int_t max=0;
3098 for (Int_t i=0;i<index;i++){
3099 if (cluster[index]>max) {
a5d0fae6 3100 sharedtrack=tracks2[index];
e43c066c 3101 max=cluster[index];
3102 }
3103 }
3104 }
3105 }
3106
3107 if (sharedtrack>=100000) return -1;
3108 //
3109 // make list of overlaps
3110 shared =0;
3111 for (Int_t icluster=0;icluster<6;icluster++){
3112 if (clusterlist[icluster]<0) continue;
3113 Int_t index = clusterlist[icluster];
3114 Int_t l=(index & 0xf0000000) >> 28;
3115 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 3116 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 3117 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3118 if (l==0 || l==1){
3119 if (cl->GetNy()>2) continue;
3120 if (cl->GetNz()>2) continue;
3121 }
3122 if (l==4 || l==5){
3123 if (cl->GetNy()>3) continue;
3124 if (cl->GetNz()>3) continue;
3125 }
3126 //
3127 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3128 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3129 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 3130 overlist[l]=index;
3131 shared++;
3132 }
3133 }
3134 }
3135 return sharedtrack;
3136}
44347160 3137//------------------------------------------------------------------------
04315dad 3138AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1,AliITStrackMI* original){
e43c066c 3139 //
3140 // try to find track hypothesys without conflicts
3141 // with minimal chi2;
3142 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
3143 Int_t entries1 = arr1->GetEntriesFast();
3144 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 3145 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3146 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 3147 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3148 //
15dd636f 3149 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
3150 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 3151 if (track10->Pt()>0.5+track20->Pt()) return track10;
a4354152 3152 //
e43c066c 3153 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3154 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3155 UnRegisterClusterTracks(track,trackID1);
3156 }
3157 //
3158 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3159 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3160 UnRegisterClusterTracks(track,trackID2);
3161 }
3162 Int_t index1=0;
3163 Int_t index2=0;
3164 Float_t maxconflicts=6;
3165 Double_t maxchi2 =1000.;
3166 //
3167 // get weight of hypothesys - using best hypothesy
3168 Double_t w1,w2;
3169
3170 Int_t list1[6],list2[6];
00a7cc50 3171 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 3172 RegisterClusterTracks(track10,trackID1);
3173 RegisterClusterTracks(track20,trackID2);
3174 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
3175 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
3176 UnRegisterClusterTracks(track10,trackID1);
3177 UnRegisterClusterTracks(track20,trackID2);
3178 //
3179 // normalized chi2
3180 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
3181 Float_t nerry[6],nerrz[6];
3182 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
3183 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
3184 for (Int_t i=0;i<6;i++){
3185 if ( (erry1[i]>0) && (erry2[i]>0)) {
3186 nerry[i] = TMath::Min(erry1[i],erry2[i]);
3187 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
3188 }else{
3189 nerry[i] = TMath::Max(erry1[i],erry2[i]);
3190 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
3191 }
b9671574 3192 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
3193 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
3194 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3195 ncl1++;
3196 }
b9671574 3197 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
3198 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
3199 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3200 ncl2++;
3201 }
3202 }
3203 chi21/=ncl1;
3204 chi22/=ncl2;
3205 //
3206 //
b9671574 3207 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
3208 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 3209 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3210 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3211 //
3212 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3213 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 3214 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3215 );
3216 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3217 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 3218 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3219 );
3220
3221 Double_t sumw = w1+w2;
3222 w1/=sumw;
3223 w2/=sumw;
3224 if (w1<w2*0.5) {
3225 w1 = (d2+0.5)/(d1+d2+1.);
3226 w2 = (d1+0.5)/(d1+d2+1.);
3227 }
3228 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3229 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3230 //
3231 // get pair of "best" hypothesys
3232 //
3233 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3234 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3235
3236 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3237 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3238 //if (track1->fFakeRatio>0) continue;
3239 RegisterClusterTracks(track1,trackID1);
3240 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3241 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3242
3243 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3244 //if (track2->fFakeRatio>0) continue;
3245 Float_t nskipped=0;
3246 RegisterClusterTracks(track2,trackID2);
e43c066c 3247 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3248 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3249 UnRegisterClusterTracks(track2,trackID2);
3250 //
b9671574 3251 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3252 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3253 if (nskipped>0.5) continue;
3254 //
3255 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3256 if (conflict1+1<cconflict1) continue;
3257 if (conflict2+1<cconflict2) continue;
3258 Float_t conflict=0;
3259 Float_t sumchi2=0;
3260 Float_t sum=0;
3261 for (Int_t i=0;i<6;i++){
3262 //
3263 Float_t c1 =0.; // conflict coeficients
3264 Float_t c2 =0.;
3265 if (clist1[i]&&clist2[i]){
3266 Float_t deltan = 0;
3267 if (i<2 || i>3){
3268 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3269 }
3270 else{
3271 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3272 }
3273 c1 = 2./TMath::Max(3.+deltan,2.);
3274 c2 = 2./TMath::Max(3.+deltan,2.);
3275 }
3276 else{
3277 if (clist1[i]){
3278 Float_t deltan = 0;
3279 if (i<2 || i>3){
3280 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3281 }
3282 else{
3283 deltan = (clist1[i]->GetNz()-nz1[i]);
3284 }
3285 c1 = 2./TMath::Max(3.+deltan,2.);
3286 c2 = 0;
3287 }
3288
3289 if (clist2[i]){
3290 Float_t deltan = 0;
3291 if (i<2 || i>3){
3292 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3293 }
3294 else{
3295 deltan = (clist2[i]->GetNz()-nz2[i]);
3296 }
3297 c2 = 2./TMath::Max(3.+deltan,2.);
3298 c1 = 0;
3299 }
3300 }
3301 //
a5d0fae6 3302 chi21=0;chi22=0;
b9671574 3303 if (TMath::Abs(track1->GetDy(i))>0.) {
3304 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3305 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3306 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3307 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3308 }else{
b9671574 3309 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3310 }
3311 //
b9671574 3312 if (TMath::Abs(track2->GetDy(i))>0.) {
3313 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3314 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3315 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3316 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3317 }
3318 else{
b9671574 3319 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3320 }
3321 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3322 if (chi21>0) sum+=w1;
3323 if (chi22>0) sum+=w2;
3324 conflict+=(c1+c2);
3325 }
b9671574 3326 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3327 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3328 Double_t normchi2 = 2*conflict+sumchi2/sum;
3329 if ( normchi2 <maxchi2 ){
3330 index1 = itrack1;
3331 index2 = itrack2;
3332 maxconflicts = conflict;
3333 maxchi2 = normchi2;
3334 }
3335 }
3336 UnRegisterClusterTracks(track1,trackID1);
3337 }
3338 //
3339 // if (maxconflicts<4 && maxchi2<th0){
3340 if (maxchi2<th0*2.){
b9671574 3341 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3342 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3343 track1->SetChi2MIP(5,maxconflicts);
3344 track1->SetChi2MIP(6,maxchi2);
3345 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3346 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3347 track1->SetChi2MIP(8,index1);
e43c066c 3348 fBestTrackIndex[trackID1] =index1;
3349 UpdateESDtrack(track1, AliESDtrack::kITSin);
04315dad 3350 original->SetWinner(track1);
e43c066c 3351 }
b9671574 3352 else if (track10->GetChi2MIP(0)<th1){
3353 track10->SetChi2MIP(5,maxconflicts);
3354 track10->SetChi2MIP(6,maxchi2);
e43c066c 3355 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3356 UpdateESDtrack(track10,AliESDtrack::kITSin);
04315dad 3357 original->SetWinner(track10);
e43c066c 3358 }
3359
3360 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3361 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3362 UnRegisterClusterTracks(track,trackID1);
3363 }
3364 //
3365 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3366 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3367 UnRegisterClusterTracks(track,trackID2);
3368 }
3369
44347160 3370 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3371 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3372 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3373 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3374 RegisterClusterTracks(track10,trackID1);
3375 }
44347160 3376 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3377 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3378 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3379 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3380 RegisterClusterTracks(track20,trackID2);
3381 }
04315dad 3382 return track10;
e43c066c 3383
3384}
44347160 3385//------------------------------------------------------------------------
e43c066c 3386void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3387 //--------------------------------------------------------------------
3388 // This function marks clusters assigned to the track
3389 //--------------------------------------------------------------------
3390 AliTracker::UseClusters(t,from);
3391
00a7cc50 3392 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3393 //if (c->GetQ()>2) c->Use();
3394 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3395 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3396 //if (c->GetQ()>2) c->Use();
3397 if (c->GetSigmaZ2()>0.1) c->Use();
3398
3399}
44347160 3400//------------------------------------------------------------------------
15dd636f 3401void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3402{
3403 //------------------------------------------------------------------
3404 // add track to the list of hypothesys
3405 //------------------------------------------------------------------
3406
fddf8459 3407 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3408 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3409 //
3410 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3411 if (!array) {
3412 array = new TObjArray(10);
3413 fTrackHypothesys.AddAt(array,esdindex);
3414 }
3415 array->AddLast(track);
3416}
44347160 3417//------------------------------------------------------------------------
e43c066c 3418void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3419{
3420 //-------------------------------------------------------------------
3421 // compress array of track hypothesys
3422 // keep only maxsize best hypothesys
3423 //-------------------------------------------------------------------
3424 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3425 if (! (fTrackHypothesys.At(esdindex)) ) return;
3426 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3427 Int_t entries = array->GetEntriesFast();
3428 //
3429 //- find preliminary besttrack as a reference
04315dad 3430 Float_t minchi2=10000;
e43c066c 3431 Int_t maxn=0;
15dd636f 3432 AliITStrackMI * besttrack=0;
a4354152 3433 //
e43c066c 3434 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3435 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3436 if (!track) continue;
3437 Float_t chi2 = NormalizedChi2(track,0);
3438 //
b9671574 3439 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3440 track->SetLabel(tpcLabel);
3441 CookdEdx(track);
b9671574 3442 track->SetFakeRatio(1.);
e43c066c 3443 CookLabel(track,0.); //For comparison only
3444 //
44347160 3445 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3446 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3447 if (track->GetNumberOfClusters()<maxn) continue;
3448 maxn = track->GetNumberOfClusters();
a4354152 3449 // if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2 *= track->GetChi2MIP(3); // RS
e43c066c 3450 if (chi2<minchi2){
3451 minchi2=chi2;
3452 besttrack=track;
3453 }
3454 }
3455 else{
b9671574 3456 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3457 delete array->RemoveAt(itrack);
3458 }
e43c066c 3459 }
3460 }
3461 if (!besttrack) return;
3462 //
3463 //
3464 //take errors of best track as a reference
3465 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3466 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3467 for (Int_t j=0;j<6;j++) {
9fd412a8 3468 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3469 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3470 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3471 ny[j] = besttrack->GetNy(j);
3472 nz[j] = besttrack->GetNz(j);
e43c066c 3473 }
3474 }
3475 //
3476 // calculate normalized chi2
3477 //
3478 Float_t * chi2 = new Float_t[entries];
3479 Int_t * index = new Int_t[entries];
04315dad 3480 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3481 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3482 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3483 if (track){
a4354152 3484 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3485 double chi2t = GetNormalizedChi2(track, mode);
3486 track->SetChi2MIP(0,chi2t);
3487 if (chi2t<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3488 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3489 chi2[itrack] = chi2t;
3490 }
628e7bb0 3491 else{
b9671574 3492 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3493 delete array->RemoveAt(itrack);
3494 }
3495 }
e43c066c 3496 }
3497 }
3498 //
3499 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3500 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3501 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3502 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3503 for (Int_t j=0;j<6;j++){
9fd412a8 3504 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3505 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3506 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3507 ny[j] = besttrack->GetNy(j);
3508 nz[j] = besttrack->GetNz(j);
e43c066c 3509 }
3510 }
3511 }
3512 //
3513 // calculate one more time with updated normalized errors
04315dad 3514 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3515 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3516 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3517 if (track){
a4354152 3518 double chi2t = GetNormalizedChi2(track, mode);
3519 track->SetChi2MIP(0,chi2t);
bf1cd124 3520 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
a4354152 3521 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3522 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3523 chi2[itrack] = chi2t; //-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3524 }
3525 else {
3526 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3527 delete array->RemoveAt(itrack);
628e7bb0 3528 }
a4354152 3529 }
e43c066c 3530 }
3531 }
3532 entries = array->GetEntriesFast();
3533 //
628e7bb0 3534 //
e43c066c 3535 if (entries>0){
3536 TObjArray * newarray = new TObjArray();
3537 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3538 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3539 if (besttrack){
bf1cd124 3540 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3541 //
a5d0fae6 3542 for (Int_t j=0;j<6;j++){
3543 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3544 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3545 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3546 ny[j] = besttrack->GetNy(j);
3547 nz[j] = besttrack->GetNz(j);
e43c066c 3548 }
3549 }
b9671574 3550 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3551 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3552 Float_t minn = besttrack->GetNumberOfClusters()-3;
3553 Int_t accepted=0;
3554 for (Int_t i=0;i<entries;i++){
15dd636f 3555 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3556 if (!track) continue;
3557 if (accepted>maxcut) break;
b9671574 3558 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3559 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3560 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3561 delete array->RemoveAt(index[i]);
3562 continue;
3563 }
e43c066c 3564 }
b9671574 3565 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3566 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3567 if (!shortbest) accepted++;
e43c066c 3568 //
3569 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3570 for (Int_t j=0;j<6;j++){
3571 if (nz[j]==0){
3572 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3573 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3574 ny[j] = track->GetNy(j);
3575 nz[j] = track->GetNz(j);
e43c066c 3576 }
3577 }
3578 }
3579 else{
3580 delete array->RemoveAt(index[i]);
3581 }
3582 }
3583 array->Delete();
3584 delete fTrackHypothesys.RemoveAt(esdindex);
3585 fTrackHypothesys.AddAt(newarray,esdindex);
3586 }
3587 else{
3588 array->Delete();
3589 delete fTrackHypothesys.RemoveAt(esdindex);
3590 }
3591 }
3592 delete [] chi2;
3593 delete [] index;
3594}
44347160 3595//------------------------------------------------------------------------
15dd636f 3596AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3597{
3598 //-------------------------------------------------------------
3599 // try to find best hypothesy
3600 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
a4354152 3601 // RS: optionally changing this to product of Chi2MIP(0)*Chi2MIP(3) == (chi2*chi2_interpolated)
e43c066c 3602 //-------------------------------------------------------------
3603 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3604 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3605 if (!array) return 0;
3606 Int_t entries = array->GetEntriesFast();
3607 if (!entries) return 0;
04315dad 3608 Float_t minchi2 = 100000;
15dd636f 3609 AliITStrackMI * besttrack=0;
e43c066c 3610 //
15dd636f 3611 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3612 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3613 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3614 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3615 //
3616 for (Int_t i=0;i<entries;i++){
15dd636f 3617 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3618 if (!track) continue;
628e7bb0 3619 Float_t sigmarfi,sigmaz;
3620 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3621 track->SetDnorm(0,sigmarfi);
3622 track->SetDnorm(1,sigmaz);
628e7bb0 3623 //
b9671574 3624 track->SetChi2MIP(1,1000000);
3625 track->SetChi2MIP(2,1000000);
3626 track->SetChi2MIP(3,1000000);
e43c066c 3627 //
3628 // backtrack
15dd636f 3629 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3630 if (track->GetConstrain()) {
e50912db 3631 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
333d86cb 3632 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
a4354152 3633 if (fUseImproveKalman) {if (!backtrack->ImproveKalman(xyzVtx,ersVtx,0,0,0)) continue;}
3634 else {if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;}
333d86cb 3635 }
6c94f330 3636 backtrack->ResetCovariance(10.);
628e7bb0 3637 }else{
6c94f330 3638 backtrack->ResetCovariance(10.);
628e7bb0 3639 }
e43c066c 3640 backtrack->ResetClusters();
628e7bb0 3641
e43c066c 3642 Double_t x = original->GetX();
3643 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3644 //
b9671574 3645 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3646 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3647 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3648 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3649
b9671574 3650 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3651 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3652 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3653
3654
44347160 3655 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3656 //
3657 //forward track - without constraint
15dd636f 3658 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3659 forwardtrack->ResetClusters();
3660 x = track->GetX();
a4354152 3661 if (!RefitAt(x,forwardtrack,track) && fSelectBestMIP03) continue; // w/o fwd track MIP03 is meaningless
b9671574 3662 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3663 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3664 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3665
791f9a2a 3666 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3667 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3668 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3669 forwardtrack->SetD(0,track->GetD(0));
3670 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3671 {
3672 Int_t list[6];
00a7cc50 3673 AliITSRecPoint* clist[6];
b9671574 3674 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3675 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3676 }
3677
b9671574 3678 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3679 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3680 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3681 track->SetChi2MIP(3,1000);
e43c066c 3682 continue;
3683 }
a4354152 3684 Double_t chi2 = track->GetChi2MIP(0); // +track->GetNUsed(); //RS
3685 if (fSelectBestMIP03) chi2 *= track->GetChi2MIP(3);
04315dad 3686 else chi2 += track->GetNUsed();
e43c066c 3687 //
3688 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3689 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3690 }
3691 if (chi2 < minchi2){
15dd636f 3692 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3693 besttrack = track;
e43c066c 3694 besttrack->SetLabel(track->GetLabel());
b9671574 3695 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3696 minchi2 = chi2;
791f9a2a 3697 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3698 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3699 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3700 }
3701 }
3702 delete backtrack;
3703 delete forwardtrack;
9cd19c63 3704
3705 if (!besttrack) return 0;
3706
e43c066c 3707 Int_t accepted=0;
3708 for (Int_t i=0;i<entries;i++){
fddf8459 3709 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3710
e43c066c 3711 if (!track) continue;
628e7bb0 3712
44347160 3713 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
a4354152 3714 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)
3715 // RS: don't apply this cut when fSelectBestMIP03 is on
3716 || (!fSelectBestMIP03 && (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.))
3717 ){
b9671574 3718 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3719 delete array->RemoveAt(i);
3720 continue;
3721 }
e43c066c 3722 }
3723 else{
3724 accepted++;
3725 }
3726 }
3727 //
3728 array->Compress();
3729 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3730
e43c066c 3731 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3732 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3733 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3734 if (!besttrack) return 0;
b9671574 3735 besttrack->SetChi2MIP(8,0);
e43c066c 3736 fBestTrackIndex[esdindex]=0;
3737 entries = array->GetEntriesFast();
15dd636f 3738 AliITStrackMI *longtrack =0;
e43c066c 3739 minchi2 =1000;
b9671574 3740 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3741 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3742 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3743 if (!track->GetConstrain()) continue;
3744 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3745 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3746 if (track->GetChi2MIP(0)>4.) continue;
3747 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3748 longtrack =track;
3749 }
3750 //if (longtrack) besttrack=longtrack;
a4354152 3751 //
3752 // RS do shared cluster analysis here only if the new sharing analysis is not requested
04315dad 3753 //RRR if (fFlagFakes) return besttrack;
e43c066c 3754
3755 Int_t list[6];
00a7cc50 3756 AliITSRecPoint * clist[6];
e43c066c 3757 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3758 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3759 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3760 RegisterClusterTracks(besttrack,esdindex);
3761 }
3762 //
3763 //
3764 if (shared>0.0){
3765 Int_t nshared;
3766 Int_t overlist[6];
3767 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3768 if (sharedtrack>=0){
3769 //
04315dad 3770 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5,original);
e43c066c 3771 if (besttrack){
3772 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3773 }
3774 else return 0;
3775 }
3776 }
3777
3778 if (shared>2.5) return 0;
3779 if (shared>1.0) return besttrack;
3780 //
628e7bb0 3781 // Don't sign clusters if not gold track
3782 //
3783 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3784 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3785 //
e43c066c 3786 if (fConstraint[fPass]){
3787 //
3788 // sign clusters
3789 //
3790 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3791 for (Int_t i=0;i<6;i++){
b9671574 3792 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3793 if (index<0) continue;
e43c066c 3794 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3795 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3796 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3797 if (!c) continue;
3798 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3799 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3800 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3801 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3802 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3803 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3804
3805 Bool_t cansign = kTRUE;
3806 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3807 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3808 if (!track) continue;
b9671574 3809 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3810 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3811 cansign = kFALSE;
3812 break;
3813 }
3814 }
3815 if (cansign){
b9671574 3816 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3817 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3818 if (!c->IsUsed()) c->Use();
3819 }
3820 }
3821 }
3822 return besttrack;
3823}
44347160 3824//------------------------------------------------------------------------
e43c066c 3825void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3826{
3827 //
3828 // get "best" hypothesys
628e7bb0 3829 //
e43c066c 3830
3831 Int_t nentries = itsTracks.GetEntriesFast();
3832 for (Int_t i=0;i<nentries;i++){
15dd636f 3833 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3834 if (!track) continue;
3835 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3836 if (!array) continue;
3837 if (array->GetEntriesFast()<=0) continue;
3838 //
15dd636f 3839 AliITStrackMI* longtrack=0;
e43c066c 3840 Float_t minn=0;
04315dad 3841 Float_t maxchi2=1000;
e43c066c 3842 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3843 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3844 if (!trackHyp) continue;
3845 if (trackHyp->GetGoldV0()) {
3846 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3847 break;
3848 }
a5d0fae6 3849 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3850 Float_t chi2 = trackHyp->GetChi2MIP(0);
a4354152 3851 if (fSelectBestMIP03) chi2 *= trackHyp->GetChi2MIP(3);
3852 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = chi2; //trackHyp->GetChi2MIP(0);
3853 //
3854 if (fAfterV0){ // ??? RS
a5d0fae6 3855 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3856 }
628e7bb0 3857 if (chi2 > maxchi2) continue;
a4354152 3858 minn = trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3859 if (fSelectBestMIP03) minn++; // allow next to longest to win
628e7bb0 3860 maxchi2 = chi2;
a5d0fae6 3861 longtrack=trackHyp;
e43c066c 3862 }
628e7bb0 3863 //
3864 //
3865 //
15dd636f 3866 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3867 if (!longtrack) {longtrack = besttrack;}
3868 else besttrack= longtrack;
628e7bb0 3869 //
afd25725 3870 if (besttrack) {
04315dad 3871 Int_t list[6];
3872 AliITSRecPoint * clist[6];
3873 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3874 //
3875 track->SetNUsed(shared);
b9671574 3876 track->SetNSkipped(besttrack->GetNSkipped());
3877 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
04315dad 3878 if (shared>0) {
3879 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3880 Int_t nshared;
3881 Int_t overlist[6];
e43c066c 3882 //
04315dad 3883 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3884 //if (sharedtrack==-1) sharedtrack=0;
3885 if (sharedtrack>=0) {
3886 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5,track);
3887 }
3888 }
3889 if (besttrack&&fAfterV0) {
628e7bb0 3890 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 3891 track->SetWinner(besttrack);
628e7bb0 3892 }
04315dad 3893 if (besttrack) {
3894 if (fConstraint[fPass]) {
3895 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3896 track->SetWinner(besttrack);
3897 }
3898 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
9cd19c63 3899 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3900 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3901 }
04315dad 3902 }
a4354152 3903 }
e43c066c 3904 }
3905}
a4354152 3906
3907//------------------------------------------------------------------------
a878a855 3908void AliITStrackerMI::FlagFakes(const TObjArray &itsTracks)
a4354152 3909{
3910 //
3911 // RS: flag those tracks which are suxpected to have fake clusters
3912 //
3913 const double kThreshPt = 0.5;
3914 AliRefArray *refArr[6];
3915 //
3916 for (int i=0;i<6;i++) {
3917 int ncl = fgLayers[i].GetNumberOfClusters();
3918 refArr[i] = new AliRefArray(ncl,TMath::Min(ncl,1000));
3919 }
3920 Int_t nentries = itsTracks.GetEntriesFast();
3921 //
3922 // fill cluster->track associations
3923 for (Int_t itr=0;itr<nentries;itr++){
3924 AliITStrackMI* track = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3925 if (!track) continue;
3926 AliITStrackMI* trackITS = track->GetWinner();
3927 if (!trackITS) continue;
3928 for (int il=trackITS->GetNumberOfClusters();il--;) {
3929 int idx = trackITS->GetClusterIndex(il);
3930 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3931 // if (c>fgLayers[l].GetNumberOfClusters()) continue;
3932 refArr[l]->AddReference(c, itr);
3933 }
3934 }
3935 //
3936 const UInt_t kMaxRef = 100;
3937 UInt_t crefs[kMaxRef];
3938 Int_t ncrefs=0;
3939 // process tracks with shared clusters
3940 for (int itr=0;itr<nentries;itr++){
3941 AliITStrackMI* track0 = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3942 AliITStrackMI* trackH0 = track0->GetWinner();
3943 if (!trackH0) continue;
3944 AliESDtrack* esd0 = track0->GetESDtrack();
3945 //
3946 for (int il=0;il<trackH0->GetNumberOfClusters();il++) {
3947 int idx = trackH0->GetClusterIndex(il);
3948 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3949 ncrefs = refArr[l]->GetReferences(c,crefs,kMaxRef);
3950 if (ncrefs<2) continue; // there will be always self-reference, for sharing needs at least 2
3951 esd0->SetITSSharedFlag(l);
3952 for (int ir=ncrefs;ir--;) {
3953 if (int(crefs[ir]) <= itr) continue; // ==:selfreference, <: the same pair will be checked with >
3954 AliITStrackMI* track1 = (AliITStrackMI*)itsTracks.UncheckedAt(crefs[ir]);
3955 AliITStrackMI* trackH1 = track1->GetWinner();
3956 AliESDtrack* esd1 = track1->GetESDtrack();
3957 esd1->SetITSSharedFlag(l);
3958 //
3959 double pt0 = trackH0->Pt(), pt1 = trackH1->Pt(), res = 0.;
3960 if (pt0>kThreshPt && pt0-pt1>0.2+0.2*(pt0-kThreshPt) ) res = -100;
3961 else if (pt1>kThreshPt && pt1-pt0>0.2+0.2*(pt1-kThreshPt) ) res = 100;
3962
3963 // select the one with smallest chi2's product
3964 res += trackH0->GetChi2MIP(0)*trackH0->GetChi2MIP(3);
3965 res -= trackH1->GetChi2MIP(0)*trackH1->GetChi2MIP(3);
3966 //
3967 if (res<0) esd1->SetITSFakeFlag(); // esd0 is winner
3968 else esd0->SetITSFakeFlag(); // esd1 is winner
3969 }
3970 //
3971 }
3972 //
3973 }
3974 //
3975 for (int i=6;i--;) delete refArr[i];
3976}
3977
44347160 3978//------------------------------------------------------------------------
15dd636f 3979void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3980 //--------------------------------------------------------------------
3981 //This function "cooks" a track label. If label<0, this track is fake.
3982 //--------------------------------------------------------------------
3983 Int_t tpcLabel=-1;
3984
d3dbf323 3985 if (track->GetESDtrack()){
3986 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3987 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3988 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3989 }
b9671574 3990 track->SetChi2MIP(9,0);
e43c066c 3991 Int_t nwrong=0;
3992 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3993 Int_t cindex = track->GetClusterIndex(i);
3994 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3995 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3996 Int_t isWrong=1;
3997 for (Int_t ind=0;ind<3;ind++){
84a21804 3998 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 3999 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 4000 }
b9671574 4001 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4002 nwrong+=isWrong;
4003 }
7d43b4c4 4004 Int_t nclusters = track->GetNumberOfClusters();
4005 if (nclusters > 0) //PH Some tracks don't have any cluster
4006 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 4007 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
4008 track->SetLabel(-tpcLabel);
4009 } else {
4010 track->SetLabel(tpcLabel);
e43c066c 4011 }
9be1d1c7 4012 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 4013
4014}
44347160 4015//------------------------------------------------------------------------
88e3c173 4016void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
4017 //
4018 // Fill the dE/dx in this track
e43c066c 4019 //
b9671574 4020 track->SetChi2MIP(9,0);
e43c066c 4021 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4022 Int_t cindex = track->GetClusterIndex(i);
4023 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 4024 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 4025 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 4026 Int_t isWrong=1;
4027 for (Int_t ind=0;ind<3;ind++){
4028 if (cl->GetLabel(ind)==lab) isWrong=0;
4029 }
b9671574 4030 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4031 }
e43c066c 4032 Double_t low=0.;
4033 Double_t up=0.51;
09cf9d66 4034 track->CookdEdx(low,up);
e43c066c 4035}
44347160 4036//------------------------------------------------------------------------
e50912db 4037void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 4038 //
a70ed6ad 4039 // Create some arrays
e43c066c 4040 //
afd25725 4041 if (fCoefficients) delete []fCoefficients;
4042 fCoefficients = new Float_t[ntracks*48];
4043 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 4044}
44347160 4045//------------------------------------------------------------------------
00a7cc50 4046Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 4047{
4048 //
a70ed6ad 4049 // Compute predicted chi2
e43c066c 4050 //
242bd643 4051 // Take into account the mis-alignment (bring track to cluster plane)
4052 Double_t xTrOrig=track->GetX();
4053 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
d9ead1a0 4054 Float_t erry,errz,covyz;
e43c066c 4055 Float_t theta = track->GetTgl();
4056 Float_t phi = track->GetSnp();
242bd643 4057 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 4058 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 4059 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 4060 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 4061 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 4062 // Bring the track back to detector plane in ideal geometry
4063 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 4064 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 4065 Float_t ny,nz;
e50912db 4066 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 4067 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
4068 if (delta>1){
4069 chi2+=0.5*TMath::Min(delta/2,2.);
4070 chi2+=2.*cluster->GetDeltaProbability();
4071 }
4072 //
b9671574 4073 track->SetNy(layer,ny);
4074 track->SetNz(layer,nz);
4075 track->SetSigmaY(layer,erry);
4076 track->SetSigmaZ(layer, errz);
d9ead1a0 4077 track->SetSigmaYZ(layer,covyz);
e43c066c 4078 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 4079 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 4080 return chi2;
4081
4082}
e50912db 4083//------------------------------------------------------------------------
4084Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 4085{
4086 //
a70ed6ad 4087 // Update ITS track
e43c066c 4088 //
4089 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 4090 track->SetClIndex(layer, index);
572f41f9 4091 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
4092 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
4093 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
4094 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
4095 }
e43c066c 4096 }
a504d56f 4097
88e3c173 4098 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 4099
afd25725 4100
1c97ce2f 4101 // Take into account the mis-alignment (bring track to cluster plane)
4102 Double_t xTrOrig=track->GetX();
4187a601 4103 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
4104 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
4105 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
4106 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 4107
9be1d1c7 4108 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 4109
150f264c 4110 AliCluster c(*cl);
4111 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
4112 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 4113 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 4114
1c97ce2f 4115
4116 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 4117 // Bring the track back to detector plane in ideal geometry
9be1d1c7 4118 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 4119
4187a601 4120 if(!updated) AliDebug(2,"update failed");
1c97ce2f 4121 return updated;
e43c066c 4122}
150f264c 4123
44347160 4124//------------------------------------------------------------------------
a70ed6ad 4125void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 4126{
4127 //
4128 //DCA sigmas parameterization
4129 //to be paramterized using external parameters in future
4130 //
4131 //
63126a46 4132 Double_t curv=track->GetC();
4133 sigmarfi = 0.0040+1.4 *TMath::Abs(curv)+332.*curv*curv;
4134 sigmaz = 0.0110+4.37*TMath::Abs(curv);
628e7bb0 4135}
e50912db 4136//------------------------------------------------------------------------
a70ed6ad 4137void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 4138{
4139 //
a70ed6ad 4140 // Clusters from delta electrons?
e43c066c 4141 //
a70ed6ad 4142 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 4143 if (entries<4) return;
a70ed6ad 4144 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 4145 Int_t layer = cluster->GetLayer();
4146 if (layer>1) return;
4147 Int_t index[10000];
4148 Int_t ncandidates=0;
4149 Float_t r = (layer>0)? 7:4;
4150 //
4151 for (Int_t i=0;i<entries;i++){
a70ed6ad 4152 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 4153 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
4154 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
4155 index[ncandidates] = i; //candidate to belong to delta electron track
4156 ncandidates++;
4157 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
4158 cl0->SetDeltaProbability(1);
4159 }
4160 }
4161 //
4162 //
4163 //
4164 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 4165 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 4166 if (cl0->GetDeltaProbability()>0.8) continue;
4167 //
4168 Int_t ncl = 0;
4169 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
4170 sumy=sumz=sumy2=sumyz=sumw=0.0;
4171 for (Int_t j=0;j<ncandidates;j++){
4172 if (i==j) continue;
a70ed6ad 4173 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 4174 //
4175 Float_t dz = cl0->GetZ()-cl1->GetZ();
4176 Float_t dy = cl0->GetY()-cl1->GetY();
4177 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
4178 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
4179 y[ncl] = cl1->GetY();
4180 z[ncl] = cl1->GetZ();
4181 sumy+= y[ncl]*weight;
4182 sumz+= z[ncl]*weight;
4183 sumy2+=y[ncl]*y[ncl]*weight;
4184 sumyz+=y[ncl]*z[ncl]*weight;
4185 sumw+=weight;
4186 ncl++;
4187 }
4188 }
4189 if (ncl<4) continue;
4190 Float_t det = sumw*sumy2 - sumy*sumy;
4191 Float_t delta=1000;
4192 if (TMath::Abs(det)>0.01){
4193 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
4194 Float_t k = (sumyz*sumw - sumy*sumz)/det;
4195 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
4196 }
4197 else{
4198 Float_t z0 = sumyz/sumy;
4199 delta = TMath::Abs(cl0->GetZ()-z0);
4200 }
4201 if ( delta<0.05) {
4202 cl0->SetDeltaProbability(1-20.*delta);
4203 }
4204 }
4205}
44347160 4206//------------------------------------------------------------------------
15dd636f 4207void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 4208{
4209 //
a70ed6ad 4210 // Update ESD track
e43c066c 4211 //
4212 track->UpdateESDtrack(flags);
b9671574 4213 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 4214 if (oldtrack) delete oldtrack;
b9671574 4215 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
5668b5b2 4216 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
4217 // printf("Problem\n");
4218 // }
e43c066c 4219}
44347160 4220//------------------------------------------------------------------------
81e97e0d 4221Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
4222 //
ae00569a 4223 // Get nearest upper layer close to the point xr.
81e97e0d 4224 // rough approximation
4225 //
bf6adc12 4226 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 4227 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
4228 Int_t res =6;
4229 for (Int_t i=0;i<6;i++){
bf6adc12 4230 if (radius<kRadiuses[i]){
81e97e0d 4231 res =i;
4232 break;
4233 }
4234 }
4235 return res;
4236}
44347160 4237//------------------------------------------------------------------------
e50912db 4238void AliITStrackerMI::BuildMaterialLUT(TString material) {
4239 //--------------------------------------------------------------------
4240 // Fill a look-up table with mean material
4241 //--------------------------------------------------------------------
4242
4243 Int_t n=1000;
4244 Double_t mparam[7];
4245 Double_t point1[3],point2[3];
4246 Double_t phi,cosphi,sinphi,z;
4247 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 4248 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
4249 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 4250
4251 Int_t ifirst=0,ilast=0;
4252 if(material.Contains("Pipe")) {
4253 ifirst=6; ilast=6;
4254 } else if(material.Contains("Shields")) {
4255 ifirst=7; ilast=8;
4256 } else if(material.Contains("Layers")) {
4257 ifirst=0; ilast=5;
4258 } else {
4259 Error("BuildMaterialLUT","Wrong layer name\n");
4260 }
4261
4262 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4263 Double_t param[5]={0.,0.,0.,0.,0.};
4264 for (Int_t i=0; i<n; i++) {
4265 phi = 2.*TMath::Pi()*gRandom->Rndm();
4266 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4267 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4268 point1[0] = rmin[imat]*cosphi;
4269 point1[1] = rmin[imat]*sinphi;
4270 point1[2] = z;
4271 point2[0] = rmax[imat]*cosphi;
4272 point2[1] = rmax[imat]*sinphi;
4273 point2[2] = z;
4274 AliTracker::MeanMaterialBudget(point1,point2,mparam);
4275 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4276 }
4277 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4278 if(imat<=5) {
4279 fxOverX0Layer[imat] = param[1];
4280 fxTimesRhoLayer[imat] = param[0]*param[4];
4281 } else if(imat==6) {
4282 fxOverX0Pipe = param[1];
4283 fxTimesRhoPipe = param[0]*param[4];
4284 } else if(imat==7) {
4285 fxOverX0Shield[0] = param[1];
4286 fxTimesRhoShield[0] = param[0]*param[4];
4287 } else if(imat==8) {
4288 fxOverX0Shield[1] = param[1];
4289 fxTimesRhoShield[1] = param[0]*param[4];
4290 }
4291 }
4292 /*
4293 printf("%s\n",material.Data());
4294 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4295 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4296 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4297 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4298 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4299 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4300 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4301 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4302 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4303 */
4304 return;
4305}
4306//------------------------------------------------------------------------
4307Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4308 TString direction) {
4309 //-------------------------------------------------------------------
4310 // Propagate beyond beam pipe and correct for material
4311 // (material budget in different ways according to fUseTGeo value)
7131593b 4312 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4313 //-------------------------------------------------------------------
4314
4315 // Define budget mode:
4316 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4317 // 1: material from TGeo in one step (on the fly)
e50912db 4318 // 2: material from lut
9be1d1c7 4319 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4320 Int_t mode;
4321 switch(fUseTGeo) {
4322 case 0:
4323 mode=0;
4324 break;
4325 case 1:
4326 mode=1;
4327 break;
4328 case 2:
4329 mode=2;
4330 break;
4331 case 3:
4332 if(fTrackingPhase.Contains("Clusters2Tracks"))
4333 { mode=3; } else { mode=1; }
4334 break;
4335 case 4:
4336 if(fTrackingPhase.Contains("Clusters2Tracks"))
4337 { mode=3; } else { mode=2; }
4338 break;
4339 default:
4340 mode=0;
4341 break;
4342 }
4343 if(fTrackingPhase.Contains("Default")) mode=0;
4344
4345 Int_t index=fCurrentEsdTrack;
4346
4347 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4348 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4349 Double_t xToGo;
4350 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4351
4352 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4353
4354 switch(mode) {
4355 case 0:
4356 xOverX0 = AliITSRecoParam::GetdPipe();
4357 x0 = AliITSRecoParam::GetX0Be();
4358 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4359 lengthTimesMeanDensity *= dir;
7131593b 4360 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4361 break;
4362 case 1:
4363 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4364 break;
4365 case 2:
4366 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4367 xOverX0 = fxOverX0Pipe;
4368 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4369 lengthTimesMeanDensity *= dir;
7131593b 4370 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4371 break;
4372 case 3:
4373 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4374 if(fxOverX0PipeTrks[index]<0) {
4375 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4376 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4377 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4378 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4379 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4380 return 1;
4381 }
4382 xOverX0 = fxOverX0PipeTrks[index];
4383 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4384 lengthTimesMeanDensity *= dir;
7131593b 4385 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4386 break;
4387 }
4388
e50912db 4389 return 1;
4390}
4391//------------------------------------------------------------------------
4392Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4393 TString shield,
4394 TString direction) {
4395 //-------------------------------------------------------------------
4396 // Propagate beyond SPD or SDD shield and correct for material
4397 // (material budget in different ways according to fUseTGeo value)
7131593b 4398 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4399 //-------------------------------------------------------------------
4400
4401 // Define budget mode:
4402 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4403 // 1: material from TGeo in steps of X cm (on the fly)
4404 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4405 // 2: material from lut
9be1d1c7 4406 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4407 Int_t mode;
4408 switch(fUseTGeo) {
4409 case 0:
4410 mode=0;
4411 break;
4412 case 1:
4413 mode=1;
4414 break;
4415 case 2:
4416 mode=2;
4417 break;
4418 case 3:
4419 if(fTrackingPhase.Contains("Clusters2Tracks"))
4420 { mode=3; } else { mode=1; }
4421 break;
4422 case 4:
4423 if(fTrackingPhase.Contains("Clusters2Tracks"))
4424 { mode=3; } else { mode=2; }
4425 break;
4426 default:
4427 mode=0;
4428 break;
4429 }
4430 if(fTrackingPhase.Contains("Default")) mode=0;
4431
4432 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4433 Double_t rToGo;
4434 Int_t shieldindex=0;
4435 if (shield.Contains("SDD")) { // SDDouter
4436 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4437 shieldindex=1;
4438 } else if (shield.Contains("SPD")) { // SPDouter
4439 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4440 shieldindex=0;
4441 } else {
4442 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4443 return 0;
4444 }
67178f34 4445
4446 // do nothing if we are already beyond the shield
4447 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4448 if(dir<0 && rTrack > rToGo) return 1; // going outward
4449 if(dir>0 && rTrack < rToGo) return 1; // going inward
4450
4451
70e83b26 4452 Double_t xToGo;
4453 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4454
4455 Int_t index=2*fCurrentEsdTrack+shieldindex;
4456
4457 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4458 Int_t nsteps=1;
e50912db 4459
4460 switch(mode) {
4461 case 0:
4462 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4463 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4464 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4465 lengthTimesMeanDensity *= dir;
7131593b 4466 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4467 break;
4468 case 1:
9be1d1c7 4469 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4470 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4471 break;
4472 case 2:
4473 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4474 xOverX0 = fxOverX0Shield[shieldindex];
4475 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4476 lengthTimesMeanDensity *= dir;
7131593b 4477 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4478 break;
4479 case 3:
4480 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4481 if(fxOverX0ShieldTrks[index]<0) {
4482 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4483 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4484 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4485 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4486 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4487 return 1;
4488 }
4489 xOverX0 = fxOverX0ShieldTrks[index];
4490 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4491 lengthTimesMeanDensity *= dir;
7131593b 4492 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4493 break;
4494 }
4495
e50912db 4496 return 1;
4497}
4498//------------------------------------------------------------------------
4499Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4500 Int_t layerindex,
4501 Double_t oldGlobXYZ[3],
4502 TString direction) {
4503 //-------------------------------------------------------------------
4504 // Propagate beyond layer and correct for material
4505 // (material budget in different ways according to fUseTGeo value)
7131593b 4506 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4507 //-------------------------------------------------------------------
4508
4509 // Define budget mode:
4510 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4511 // 1: material from TGeo in stepsof X cm (on the fly)
4512 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4513 // 2: material from lut
9be1d1c7 4514 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4515 Int_t mode;
4516 switch(fUseTGeo) {
4517 case 0:
4518 mode=0;
4519 break;
4520 case 1:
4521 mode=1;
4522 break;
4523 case 2:
4524 mode=2;
4525 break;
4526 case 3:
4527 if(fTrackingPhase.Contains("Clusters2Tracks"))
4528 { mode=3; } else { mode=1; }
4529 break;
4530 case 4:
4531 if(fTrackingPhase.Contains("Clusters2Tracks"))
4532 { mode=3; } else { mode=2; }
4533 break;
4534 default:
4535 mode=0;
4536 break;
4537 }
4538 if(fTrackingPhase.Contains("Default")) mode=0;
4539
4540 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4541
4542 Double_t r=fgLayers[layerindex].GetR();
4543 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4544
4545 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4546 Double_t xToGo;
4547 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4548
4549 Int_t index=6*fCurrentEsdTrack+layerindex;
4550
e50912db 4551
4552 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4553 Int_t nsteps=1;
7131593b 4554
4555 // back before material (no correction)
d634c32b 4556 Double_t rOld,xOld;
7131593b 4557 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4558 if (!t->GetLocalXat(rOld,xOld)) return 0;
4559 if (!t->Propagate(xOld)) return 0;
e50912db 4560
4561 switch(mode) {
4562 case 0:
4563 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4564 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4565 lengthTimesMeanDensity *= dir;
7131593b 4566 // Bring the track beyond the material
4567 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4568 break;
4569 case 1:
9be1d1c7 4570 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4571 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4572 break;
4573 case 2:
4574 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4575 xOverX0 = fxOverX0Layer[layerindex];
4576 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4577 lengthTimesMeanDensity *= dir;
7131593b 4578 // Bring the track beyond the material
4579 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4580 break;
4581 case 3:
4582 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4583 if(fxOverX0LayerTrks[index]<0) {
4584 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4585 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4586 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4587 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4588 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4589 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4590 return 1;
e50912db 4591 }
4592 xOverX0 = fxOverX0LayerTrks[index];
4593 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4594 lengthTimesMeanDensity *= dir;
7131593b 4595 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4596 break;
4597 }
4598
7131593b 4599
e50912db 4600 return 1;
4601}
4602//------------------------------------------------------------------------
4603void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4604 //-----------------------------------------------------------------
4605 // Initialize LUT for storing material for each prolonged track
4606 //-----------------------------------------------------------------
4607 fxOverX0PipeTrks = new Float_t[ntracks];
4608 fxTimesRhoPipeTrks = new Float_t[ntracks];
4609 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4610 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4611 fxOverX0LayerTrks = new Float_t[ntracks*6];
4612 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4613
4614 for(Int_t i=0; i<ntracks; i++) {
4615 fxOverX0PipeTrks[i] = -1.;
4616 fxTimesRhoPipeTrks[i] = -1.;
4617 }
4618 for(Int_t j=0; j<ntracks*2; j++) {
4619 fxOverX0ShieldTrks[j] = -1.;
4620 fxTimesRhoShieldTrks[j] = -1.;
4621 }
4622 for(Int_t k=0; k<ntracks*6; k++) {
4623 fxOverX0LayerTrks[k] = -1.;
4624 fxTimesRhoLayerTrks[k] = -1.;
4625 }
4626
4627 fNtracks = ntracks;
4628
4629 return;
4630}
4631//------------------------------------------------------------------------
4632void AliITStrackerMI::DeleteTrksMaterialLUT() {
4633 //-----------------------------------------------------------------
4634 // Delete LUT for storing material for each prolonged track
4635 //-----------------------------------------------------------------
4636 if(fxOverX0PipeTrks) {
4637 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4638 }
4639 if(fxOverX0ShieldTrks) {
4640 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4641 }
4642
4643 if(fxOverX0LayerTrks) {
4644 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4645 }
4646 if(fxTimesRhoPipeTrks) {
4647 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4648 }
4649 if(fxTimesRhoShieldTrks) {
4650 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4651 }
4652 if(fxTimesRhoLayerTrks) {
4653 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4654 }
4655 return;
4656}
4657//------------------------------------------------------------------------
4fa7f7d1 4658void AliITStrackerMI::SetForceSkippingOfLayer() {
4659 //-----------------------------------------------------------------
4660 // Check if we are forced to skip layers
4661 // either we set to skip them in RecoParam
4662 // or they were off during data-taking
4663 //-----------------------------------------------------------------
4664
4665 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4666
4fa7f7d1 4667 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4668 fForceSkippingOfLayer[l] = 0;
4669 // check reco param
4670 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4671 // check run info
4672
87b4605f 4673 if(eventInfo &&
4674 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4675 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4676 if(l==0 || l==1) {
4677 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4678 } else if(l==2 || l==3) {
4679 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4680 } else {
4681 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4682 }
4683 }
4684 }
4685 return;
4686}
4687//------------------------------------------------------------------------
a70ed6ad 4688Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4689 Int_t ilayer,Int_t idet) const {
2755f080 4690 //-----------------------------------------------------------------
4691 // This method is used to decide whether to allow a prolongation
4692 // without clusters, because we want to skip the layer.
4693 // In this case the return value is > 0:
4694 // return 1: the user requested to skip a layer
371164ec 4695 // return 2: track outside z acceptance
2755f080 4696 //-----------------------------------------------------------------
e43c066c 4697
4fa7f7d1 4698 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4699
371164ec 4700 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4701
4702 if (idet<0 && // out in z
4703 ilayer>innerLayCanSkip &&
4704 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4705 // check if track will cross SPD outer layer
4706 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4707 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4708 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4709 }
371164ec 4710 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4711 }
51ad6848 4712
2755f080 4713 return 0;
4714}
4715//------------------------------------------------------------------------
23197852 4716Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4717 Int_t ilayer,Int_t idet,
1c97ce2f 4718 Double_t dz,Double_t dy,
23197852 4719 Bool_t noClusters) const {
6518a6c5 4720 //-----------------------------------------------------------------
4721 // This method is used to decide whether to allow a prolongation
ae00569a 4722 // without clusters, because there is a dead zone in the road.
6518a6c5 4723 // In this case the return value is > 0:
4724 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4725 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4726 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4727 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4728 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4729 //-----------------------------------------------------------------
4730
4731 // check dead zones at z=0,+-7cm in the SPD
4732 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4733 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4734 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4735 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4736 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4737 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4738 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4739 for (Int_t i=0; i<3; i++)
4187a601 4740 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4741 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4742 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4743 }
6518a6c5 4744 }
4745
23197852 4746 // check bad zones from OCDB
4747 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4748
23197852 4749 if (idet<0) return 0;
ae00569a 4750
23197852 4751 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4752
23197852 4753 Int_t detType=-1;
4754 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4755 if (ilayer==0 || ilayer==1) { // ---------- SPD
4756 detType = 0;
4757 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4758 detType = 1;
4759 detSizeFactorX *= 2.;
4760 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4761 detType = 2;
4762 }
a70ed6ad 4763 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4764 if (detType==2) segm->SetLayer(ilayer+1);
4765 Float_t detSizeX = detSizeFactorX*segm->Dx();
4766 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4767
4768 // check if the road overlaps with bad chips
4769 Float_t xloc,zloc;
e9b15b0c 4770 if(!(LocalModuleCoord(ilayer,idet,track,xloc,zloc)))return 0;
1c97ce2f 4771 Float_t zlocmin = zloc-dz;
4772 Float_t zlocmax = zloc+dz;
4773 Float_t xlocmin = xloc-dy;
4774 Float_t xlocmax = xloc+dy;
23197852 4775 Int_t chipsInRoad[100];
4776
4187a601 4777 // check if road goes out of detector
4778 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4779 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4780 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4781 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4782 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4783 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));
4784
4785 // check if this detector is bad
4786 if (det.IsBad()) {
4787 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4788 if(!touchNeighbourDet) {
4789 return 2; // all detectors in road are bad
4790 } else {
4791 return 3; // at least one is bad
4792 }
4793 }
4794
23197852 4795 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4796 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4797 if (!nChipsInRoad) return 0;
4798
4799 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4800 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4801 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4802 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4803 if (det.IsChipBad(chipsInRoad[iCh])) {
4804 anyBad=kTRUE;
4805 } else {
4806 anyGood=kTRUE;
4807 }
6518a6c5 4808 }
4809
4187a601 4810 if (!anyGood) {
4811 if(!touchNeighbourDet) {
4812 AliDebug(2,"all bad in road");
4813 return 2; // all chips in road are bad
4814 } else {
4815 return 3; // at least a bad chip in road
4816 }
4817 }
23197852 4818
4187a601 4819 if (anyBad) {
4820 AliDebug(2,"at least a bad in road");
4821 return 3; // at least a bad chip in road
4822 }
23197852 4823
4824
4825 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4826 || !noClusters) return 0;
4827
4828 // There are no clusters in road: check if there is at least
6a0fdcbd 4829 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4830
4187a601 4831 Int_t idetInITS=idet;
4832 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4833
4187a601 4834 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4835 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4836 return 4;
4187a601 4837 }
4838 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4839
6518a6c5 4840 return 0;
4841}
4842//------------------------------------------------------------------------
ae00569a 4843Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4844 const AliITStrackMI *track,
ae00569a 4845 Float_t &xloc,Float_t &zloc) const {
4846 //-----------------------------------------------------------------
4847 // Gives position of track in local module ref. frame
4848 //-----------------------------------------------------------------
4849
4850 xloc=0.;
4851 zloc=0.;
4852
371164ec 4853 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4854
4855 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4856
4857 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4858
ae00569a 4859 Int_t det = idet - (lad-1)*ndet + 1;
4860
4861 Double_t xyzGlob[3],xyzLoc[3];
4862
1c97ce2f 4863 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4864 // take into account the misalignment: xyz at real detector plane
d1181f10 4865 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4866
d1181f10 4867 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4868
4869 xloc = (Float_t)xyzLoc[0];
4870 zloc = (Float_t)xyzLoc[2];
4871
4872 return kTRUE;
4873}
4874//------------------------------------------------------------------------
879cdb02 4875//------------------------------------------------------------------------
a70ed6ad 4876Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4877//
4878// Method to be optimized further:
4879// Aim: decide whether a track can be used for PlaneEff evaluation
4880// the decision is taken based on the track quality at the layer under study
4881// no information on the clusters on this layer has to be used
4882// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4883// the cut is done on number of sigmas from the boundaries
4884//
4885// Input: Actual track, layer [0,5] under study
4886// Output: none
4887// Return: kTRUE if this is a good track
7167ae53 4888//
4889// it will apply a pre-selection to obtain good quality tracks.
4890// Here also you will have the possibility to put a control on the
4891// impact point of the track on the basic block, in order to exclude border regions
4892// this will be done by calling a proper method of the AliITSPlaneEff class.
4893//
4894// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4895// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4896//
4897 Int_t index[AliITSgeomTGeo::kNLayers];
4898 Int_t k;
4899 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4900 //
4901 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4902 index[k]=clusters[k];
4903 }
4904
0e91092f 4905 if(!fPlaneEff)
a31a139f 4906 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4907 AliITSlayer &layer=fgLayers[ilayer];
4908 Double_t r=layer.GetR();
8a32c4b5 4909 AliITStrackMI tmp(*track);
4910
0ed58a47 4911// require a minimal number of cluster in other layers and eventually clusters in closest layers
061c42a0 4912 Int_t ncl_out=0; Int_t ncl_in=0;
4913 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
879cdb02 4914 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
0ed58a47 4915 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4916 // if (tmp.GetClIndex(lay)>=0) ncl_out++;
4917if(index[lay]>=0)ncl_out++;
0ed58a47 4918 }
061c42a0 4919 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4920 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4921 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4922 if (index[lay]>=0) ncl_in++;
061c42a0 4923 }
63cce7b6 4924 Int_t ncl=ncl_out+ncl_in;
0ed58a47 4925 Bool_t nextout = kFALSE;
4926 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4927 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4928 Bool_t nextin = kFALSE;
4929 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4930 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4931 // maximum number of missing clusters allowed in outermost layers
4932 if(ncl_out<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
4933 return kFALSE;
4934 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4935 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 4936 return kFALSE;
4937 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4938 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4939 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4940 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4941
8a32c4b5 4942// detector number
4943 Double_t phi,z;
4944 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4945 Int_t idet=layer.FindDetectorIndex(phi,z);
4946 if(idet<0) { AliInfo(Form("cannot find detector"));
4947 return kFALSE;}
4948
4949 // here check if it has good Chi Square.
4950
4951 //propagate to the intersection with the detector plane
4952 const AliITSdetector &det=layer.GetDetector(idet);
4953 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4954
4955 Float_t locx; //
4956 Float_t locz; //
0e91092f 4957 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4958 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4959 if(key>fPlaneEff->Nblock()) return kFALSE;
4960 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4961 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4962 //***************
0e91092f 4963 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4964 //
061c42a0 4965 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4966 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
0e91092f 4967 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4968 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
879cdb02 4969 // done for RecPoints
8a32c4b5 4970
1c97ce2f 4971 // exclude tracks at boundary between detectors
0e91092f 4972 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4973 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4974 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4975 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4976 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
0e91092f 4977 if ( (locx-dx < blockXmn+boundaryWidth) ||
4978 (locx+dx > blockXmx-boundaryWidth) ||
4979 (locz-dz < blockZmn+boundaryWidth) ||
4980 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4981 return kTRUE;
7167ae53 4982}
4983//------------------------------------------------------------------------
a70ed6ad 4984void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4985//
4986// This Method has to be optimized! For the time-being it uses the same criteria
4987// as those used in the search of extra clusters for overlapping modules.
4988//
4989// Method Purpose: estabilish whether a track has produced a recpoint or not
4990// in the layer under study (For Plane efficiency)
4991//
4992// inputs: AliITStrackMI* track (pointer to a usable track)
4993// outputs: none
4994// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4995// traversed by this very track. In details:
4996// - if a cluster can be associated to the track then call
4997// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4998// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4999//
a31a139f 5000 if(!fPlaneEff)
5001 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 5002 AliITSlayer &layer=fgLayers[ilayer];
5003 Double_t r=layer.GetR();
7167ae53 5004 AliITStrackMI tmp(*track);
5005
5006// detector number
5007 Double_t phi,z;
5008 if (!tmp.GetPhiZat(r,phi,z)) return;
5009 Int_t idet=layer.FindDetectorIndex(phi,z);
5010
8a32c4b5 5011 if(idet<0) { AliInfo(Form("cannot find detector"));
5012 return;}
7167ae53 5013
7167ae53 5014
0e91092f 5015//propagate to the intersection with the detector plane
7167ae53 5016 const AliITSdetector &det=layer.GetDetector(idet);
5017 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 5018
1c97ce2f 5019
0e91092f 5020//***************
5021// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5022//
5023 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5024 TMath::Sqrt(tmp.GetSigmaZ2() +
5025 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5026 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5027 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5028 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5029 TMath::Sqrt(tmp.GetSigmaY2() +
5030 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5031 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5032 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5033
5034// road in global (rphi,z) [i.e. in tracking ref. system]
5035 Double_t zmin = tmp.GetZ() - dz;
5036 Double_t zmax = tmp.GetZ() + dz;
5037 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5038 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5039
5040// select clusters in road
7167ae53 5041 layer.SelectClusters(zmin,zmax,ymin,ymax);
5042
0e91092f 5043// Define criteria for track-cluster association
7167ae53 5044 Double_t msz = tmp.GetSigmaZ2() +
5045 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5046 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5047 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5048 Double_t msy = tmp.GetSigmaY2() +
5049 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5050 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5051 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 5052 if (tmp.GetConstrain()) {
7167ae53 5053 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5054 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 5055 } else {
5056 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5057 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5058 }
7167ae53 5059 msz = 1./msz; // 1/RoadZ^2
5060 msy = 1./msy; // 1/RoadY^2
0e91092f 5061//
7167ae53 5062
5063 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5064 Int_t idetc=-1;
8a32c4b5 5065 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5066 //Double_t tolerance=0.2;
5067 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 5068 idetc = cl->GetDetectorIndex();
5069 if(idet!=idetc) continue;
5070 //Int_t ilay = cl->GetLayer();
5071
5072 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5073 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5074
5075 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 5076 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5077 }*/
5078 Float_t locx; //
5079 Float_t locz; //
0e91092f 5080 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 5081//
5082 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5083 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5084 if(key>fPlaneEff->Nblock()) return;
5085 Bool_t found=kFALSE;
8a32c4b5 5086 //if (ci>=0) {
1cc5cedc 5087 Double_t chi2;
8a32c4b5 5088 while ((cl=layer.GetNextCluster(clidx))!=0) {
5089 idetc = cl->GetDetectorIndex();
5090 if(idet!=idetc) continue;
5091 // here real control to see whether the cluster can be associated to the track.
5092 // cluster not associated to track
5093 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5094 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5095 // calculate track-clusters chi2
1cc5cedc 5096 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5097 // in particular, the error associated to the cluster
8a32c4b5 5098 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5099 // chi2 cut
5100 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 5101 found=kTRUE;
8a32c4b5 5102 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 5103 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5104 // track->SetExtraModule(ilayer,idetExtra);
5105 }
5106 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 5107 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
1f1e7832 5108
5109// this for FO efficiency studies (only for SPD) //
5110 UInt_t keyFO=999999;
5111 Bool_t foundFO=kFALSE;
5112 if(ilayer<2){ //ONLY SPD layers for FastOr studies
5113 TBits mapFO = fkDetTypeRec->GetFastOrFiredMap();
5114 Int_t phase = (fEsd->GetBunchCrossNumber())%4;
5115 if(!fSPDChipIntPlaneEff[key]){
5116 AliITSPlaneEffSPD spd;
5117 keyFO = spd.SwitchChipKeyNumbering(key);
5118 if(mapFO.TestBitNumber(keyFO))foundFO=kTRUE;
5119 keyFO = key + (AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip)*(phase+1);
5120 if(keyFO<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip) {
5121 AliWarning(Form("UseTrackForPlaneEff: too small keyF0 (= %d), setting it to 999999",keyFO));
5122 keyFO=999999;
5123 }
5124 if(!fPlaneEff->UpDatePlaneEff(foundFO,keyFO))
5125 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for FastOR for key=%d",keyFO));
5126 }
5127 }
5128
5129
5130
5fbd4fd6 5131 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 5132 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5133 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5134 Int_t cltype[2]={-999,-999};
879cdb02 5135 // and the module
5136
5137Float_t AngleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
0e91092f 5138
5139 tr[0]=locx;
5140 tr[1]=locz;
5141 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5142 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5143
3ebe30ad 5144 if (found){
5145 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5146 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5147 cltype[0]=layer.GetCluster(ci)->GetNy();
5148 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 5149
5150 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5151 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5152 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5153 // It is computed properly by calling the method
5154 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5155 // T
5156 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5157 //if (tmp.PropagateTo(x,0.,0.)) {
5158 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5159 AliCluster c(*layer.GetCluster(ci));
5160 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5161 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 5162 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 5163 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5164 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 5165 //}
3ebe30ad 5166 }
879cdb02 5167 // Compute the angles between the track and the module
5168 // compute the angle "in phi direction", i.e. the angle in the transverse plane
5169 // between the normal to the module and the projection (in the transverse plane) of the
5170 // track trajectory
5171 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
5172 Float_t tgl = tmp.GetTgl();
5173 Float_t phitr = tmp.GetSnp();
5174 phitr = TMath::ASin(phitr);
5175 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
5176
5177 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
5178 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
5179 Double_t alpha =0.;
5180 alpha = tmp.GetAlpha();
5181 Double_t phiglob = alpha+phitr;
5182 Double_t p[3];
5183 p[0] = TMath::Cos(phiglob);
5184 p[1] = TMath::Sin(phiglob);
5185 p[2] = tgl;
5186 TVector3 pvec(p[0],p[1],p[2]);
5187 TVector3 normvec(rot[1],rot[4],rot[7]);
5188 Double_t angle = pvec.Angle(normvec);
5189
5190 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
5191 angle *= 180./TMath::Pi();
5192
5193 //Trasverse Plane
5194 TVector3 pt(p[0],p[1],0);
5195 TVector3 normt(rot[1],rot[4],0);
5196 Double_t anglet = pt.Angle(normt);
5197
5198 Double_t phiPt = TMath::ATan2(p[1],p[0]);
5199 if(phiPt<0)phiPt+=2.*TMath::Pi();
5200 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
5201 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
5202 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
5203 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
5204 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
5205 anglet *= 180./TMath::Pi();
5206
5207 AngleModTrack[2]=(Float_t) angle;
5208 AngleModTrack[0]=(Float_t) anglet;
5209 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
5210 AngleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
5211 AngleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
5212 AngleModTrack[1]*=180./TMath::Pi(); // in degree
5213
1f1e7832 5214 fPlaneEff->FillHistos(key,found,tr,clu,cltype,AngleModTrack);
5215
5216 // For FO efficiency studies of SPD
5217 if(ilayer<2 && !fSPDChipIntPlaneEff[key]) fPlaneEff->FillHistos(keyFO,foundFO,tr,clu,cltype,AngleModTrack);
5fbd4fd6 5218 }
1f1e7832 5219 if(ilayer<2) fSPDChipIntPlaneEff[key]=kTRUE;
7167ae53 5220return;
5221}
a4354152 5222
5223Int_t AliITStrackerMI::FindClusterOfTrack(int label, int lr, int* store) const //RS
5224{
5225 // find the MC cluster for the label
5226 return fgLayers[lr].FindClusterForLabel(label,store);
5227}
5228
fa4c46da 5229/*
a4354152 5230Int_t AliITStrackerMI::GetPattern(const AliITStrackMI* track, char* patt)
5231{
5232 // creates pattarn of hits marking fake/corrects by f/c. Used for debugging (RS)
cff9e015 5233 strncpy(patt,"......",6);
a4354152 5234 int tpcLabel = 0;
5235 if (track->GetESDtrack()) tpcLabel = track->GetESDtrack()->GetTPCLabel();
5236 //
5237 int nwrong = 0;
5238 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
5239 Int_t cindex = track->GetClusterIndex(i);
5240 Int_t l=(cindex & 0xf0000000) >> 28;
5241 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
5242 Int_t isWrong=1;
5243 for (Int_t ind=0;ind<3;ind++) if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
5244 patt[l] = isWrong ? 'f':'c';
5245 nwrong+=isWrong;
5246 }
5247 return nwrong;
5248}
fa4c46da 5249*/
a4354152 5250//------------------------------------------------------------------------
b80c197e 5251Int_t AliITStrackerMI::AliITSlayer::FindClusterForLabel(Int_t label, Int_t *store) const
5252{ //RS
a4354152 5253 //--------------------------------------------------------------------
5254
5255 int nfound = 0;
5256 for (int ic=0;ic<fN;ic++) {
5257 const AliITSRecPoint *cl = GetCluster(ic);
5258 for (int i=0;i<3;i++) if (cl->GetLabel(i)==label) {
5259 if (nfound<50) {
5260 if (store) store[nfound] = ic;
5261 nfound++;
5262 }
5263 break;
5264 }
5265 }
5266 return nfound;
5267}
04315dad 5268