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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>
bf6adc12 36
4187a601 37#include "AliLog.h"
88e3c173 38#include "AliGeomManager.h"
a70ed6ad 39#include "AliITSPlaneEff.h"
a70ed6ad 40#include "AliTrackPointArray.h"
af885e0f 41#include "AliESDEvent.h"
5c6a2470 42#include "AliESDV0Params.h"
aad72f45 43#include "AliESDtrack.h"
6c94f330 44#include "AliV0.h"
a70ed6ad 45#include "AliITSChannelStatus.h"
46#include "AliITSDetTypeRec.h"
00a7cc50 47#include "AliITSRecPoint.h"
2b295109 48#include "AliITSRecPointContainer.h"
e341247d 49#include "AliITSgeomTGeo.h"
44347160 50#include "AliITSReconstructor.h"
572f41f9 51#include "AliITSClusterParam.h"
23197852 52#include "AliITSsegmentation.h"
53#include "AliITSCalibration.h"
7167ae53 54#include "AliITSPlaneEffSPD.h"
55#include "AliITSPlaneEffSDD.h"
56#include "AliITSPlaneEffSSD.h"
44396017 57#include "AliITSV0Finder.h"
ae00569a 58#include "AliITStrackerMI.h"
bb7e41dd 59#include "AliMathBase.h"
e43c066c 60
a4354152 61
e43c066c 62ClassImp(AliITStrackerMI)
e43c066c 63
e50912db 64AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 65
8221b41b 66AliITStrackerMI::AliITStrackerMI():AliTracker(),
67fI(0),
68fBestTrack(),
69fTrackToFollow(),
70fTrackHypothesys(),
71fBestHypothesys(),
72fOriginal(),
73fCurrentEsdTrack(),
74fPass(0),
75fAfterV0(kFALSE),
76fLastLayerToTrackTo(0),
afd25725 77fCoefficients(0),
8221b41b 78fEsd(0),
e50912db 79fTrackingPhase("Default"),
6518a6c5 80fUseTGeo(3),
e50912db 81fNtracks(0),
a4354152 82fFlagFakes(kFALSE),
83fSelectBestMIP03(kFALSE),
84fUseImproveKalman(kFALSE),
e50912db 85fxOverX0Pipe(-1.),
86fxTimesRhoPipe(-1.),
87fxOverX0PipeTrks(0),
88fxTimesRhoPipeTrks(0),
89fxOverX0ShieldTrks(0),
90fxTimesRhoShieldTrks(0),
91fxOverX0LayerTrks(0),
92fxTimesRhoLayerTrks(0),
4a66240a 93fDebugStreamer(0),
23197852 94fITSChannelStatus(0),
a70ed6ad 95fkDetTypeRec(0),
4336faa4 96fPlaneEff(0),
97fITSPid(0)
98
99 {
8221b41b 100 //Default constructor
e50912db 101 Int_t i;
102 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
225cff59 103 for(i=0;i<2;i++) {
104 fxOverX0Shield[i]=-1.;
105 fxTimesRhoShield[i]=-1.;
106 fConstraint[i]=0;
107 }
e50912db 108 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
a0b53cc4 109 fOriginal.SetOwner();
225cff59 110 for(i=0;i<AliITSgeomTGeo::kNLayers;i++)fForceSkippingOfLayer[i]=0;
111 for(i=0;i<100000;i++)fBestTrackIndex[i]=0;
4336faa4 112 fITSPid=new AliITSPIDResponse();
225cff59 113
8221b41b 114}
44347160 115//------------------------------------------------------------------------
1f3e997f 116AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 117fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 118fBestTrack(),
119fTrackToFollow(),
120fTrackHypothesys(),
121fBestHypothesys(),
122fOriginal(),
123fCurrentEsdTrack(),
124fPass(0),
125fAfterV0(kFALSE),
e50912db 126fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 127fCoefficients(0),
8221b41b 128fEsd(0),
e50912db 129fTrackingPhase("Default"),
6518a6c5 130fUseTGeo(3),
e50912db 131fNtracks(0),
a4354152 132fFlagFakes(kFALSE),
133fSelectBestMIP03(kFALSE),
134fUseImproveKalman(kFALSE),
e50912db 135fxOverX0Pipe(-1.),
136fxTimesRhoPipe(-1.),
137fxOverX0PipeTrks(0),
138fxTimesRhoPipeTrks(0),
139fxOverX0ShieldTrks(0),
140fxTimesRhoShieldTrks(0),
141fxOverX0LayerTrks(0),
142fxTimesRhoLayerTrks(0),
4a66240a 143fDebugStreamer(0),
23197852 144fITSChannelStatus(0),
a70ed6ad 145fkDetTypeRec(0),
4336faa4 146fPlaneEff(0),
147fITSPid(0) {
e43c066c 148 //--------------------------------------------------------------------
149 //This is the AliITStrackerMI constructor
150 //--------------------------------------------------------------------
e341247d 151 if (geom) {
152 AliWarning("\"geom\" is actually a dummy argument !");
153 }
154
a0b53cc4 155 fOriginal.SetOwner();
afd25725 156 fCoefficients = 0;
628e7bb0 157 fAfterV0 = kFALSE;
e341247d 158
e50912db 159 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 160 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
161 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
162
163 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
bf1cd124 164 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
e43c066c 165 Double_t poff=TMath::ATan2(y,x);
166 Double_t zoff=z;
bf1cd124 167
168 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e341247d 169 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 170
e341247d 171 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 172 r += TMath::Sqrt(x*x + y*y);
e341247d 173 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 174 r += TMath::Sqrt(x*x + y*y);
e341247d 175 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 176 r += TMath::Sqrt(x*x + y*y);
177 r*=0.25;
178
179 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
180
181 for (Int_t j=1; j<nlad+1; j++) {
182 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 183 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 184 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
185 m.Multiply(tm);
a5d0fae6 186 Double_t txyz[3]={0.};
187 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 188 m.LocalToMaster(txyz,xyz);
a5d0fae6 189 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 190 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 191
192 if (phi<0) phi+=TMath::TwoPi();
193 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
194
e43c066c 195 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
196 new(&det) AliITSdetector(r,phi);
1c97ce2f 197 // compute the real radius (with misalignment)
198 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
199 mmisal.Multiply(tm);
200 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
201 mmisal.LocalToMaster(txyz,xyz);
202 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
203 det.SetRmisal(rmisal);
204
23197852 205 } // end loop on detectors
206 } // end loop on ladders
9cd19c63 207 fForceSkippingOfLayer[i-1] = 0;
23197852 208 } // end loop on layers
e43c066c 209
e43c066c 210
e50912db 211 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 212
213 fPass=0;
214 fConstraint[0]=1; fConstraint[1]=0;
215
afd25725 216 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
217 AliITSReconstructor::GetRecoParam()->GetYVdef(),
218 AliITSReconstructor::GetRecoParam()->GetZVdef()};
219 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
220 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
221 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
222 SetVertex(xyzVtx,ersVtx);
e43c066c 223
e50912db 224 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 225 for (Int_t i=0;i<100000;i++){
226 fBestTrackIndex[i]=0;
227 }
afd25725 228
229 // store positions of centre of SPD modules (in z)
bf1cd124 230 // The convetion is that fSPDdetzcentre is ordered from -z to +z
afd25725 231 Double_t tr[3];
c3fd826e 232 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
bf1cd124 233 if (tr[2]<0) { // old geom (up to v5asymmPPR)
234 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
235 fSPDdetzcentre[0] = tr[2];
236 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
237 fSPDdetzcentre[1] = tr[2];
238 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
239 fSPDdetzcentre[2] = tr[2];
240 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
241 fSPDdetzcentre[3] = tr[2];
242 } else { // new geom (from v11Hybrid)
243 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
244 fSPDdetzcentre[0] = tr[2];
245 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
246 fSPDdetzcentre[1] = tr[2];
247 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
248 fSPDdetzcentre[2] = tr[2];
249 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
250 fSPDdetzcentre[3] = tr[2];
251 }
afd25725 252
afd25725 253 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 254 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
255 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
256 fUseTGeo = 3;
257 }
e50912db 258
259 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
260 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
261
c0b60eb0 262 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
263 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
81e97e0d 264
7167ae53 265 // only for plane efficiency evaluation
58e8dc31 266 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
267 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 268 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 269 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 270 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
271 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
272 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
273 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 274 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 275 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
276 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 277 }
a4354152 278 //
279 // RS
04315dad 280 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
a4354152 281 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
282 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
283 //
4336faa4 284 fITSPid=new AliITSPIDResponse();
628e7bb0 285}
225cff59 286/*
44347160 287//------------------------------------------------------------------------
8221b41b 288AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
289fI(tracker.fI),
290fBestTrack(tracker.fBestTrack),
291fTrackToFollow(tracker.fTrackToFollow),
292fTrackHypothesys(tracker.fTrackHypothesys),
293fBestHypothesys(tracker.fBestHypothesys),
294fOriginal(tracker.fOriginal),
295fCurrentEsdTrack(tracker.fCurrentEsdTrack),
296fPass(tracker.fPass),
297fAfterV0(tracker.fAfterV0),
298fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 299fCoefficients(tracker.fCoefficients),
8221b41b 300fEsd(tracker.fEsd),
e50912db 301fTrackingPhase(tracker.fTrackingPhase),
afd25725 302fUseTGeo(tracker.fUseTGeo),
e50912db 303fNtracks(tracker.fNtracks),
a4354152 304fFlagFakes(tracker.fFlagFakes),
305fSelectBestMIP03(tracker.fSelectBestMIP03),
e50912db 306fxOverX0Pipe(tracker.fxOverX0Pipe),
307fxTimesRhoPipe(tracker.fxTimesRhoPipe),
308fxOverX0PipeTrks(0),
309fxTimesRhoPipeTrks(0),
310fxOverX0ShieldTrks(0),
311fxTimesRhoShieldTrks(0),
312fxOverX0LayerTrks(0),
313fxTimesRhoLayerTrks(0),
4a66240a 314fDebugStreamer(tracker.fDebugStreamer),
23197852 315fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 316fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 317fPlaneEff(tracker.fPlaneEff) {
8221b41b 318 //Copy constructor
a0b53cc4 319 fOriginal.SetOwner();
e50912db 320 Int_t i;
321 for(i=0;i<4;i++) {
322 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
323 }
324 for(i=0;i<6;i++) {
325 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
326 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
327 }
328 for(i=0;i<2;i++) {
329 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
330 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
331 }
8221b41b 332}
225cff59 333
44347160 334//------------------------------------------------------------------------
8221b41b 335AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
336 //Assignment operator
337 this->~AliITStrackerMI();
338 new(this) AliITStrackerMI(tracker);
339 return *this;
340}
225cff59 341*/
44347160 342//------------------------------------------------------------------------
628e7bb0 343AliITStrackerMI::~AliITStrackerMI()
344{
345 //
346 //destructor
347 //
e50912db 348 if (fCoefficients) delete [] fCoefficients;
349 DeleteTrksMaterialLUT();
81e97e0d 350 if (fDebugStreamer) {
351 //fDebugStreamer->Close();
352 delete fDebugStreamer;
353 }
23197852 354 if(fITSChannelStatus) delete fITSChannelStatus;
355 if(fPlaneEff) delete fPlaneEff;
4336faa4 356 if(fITSPid) delete fITSPid;
357
e43c066c 358}
44347160 359//------------------------------------------------------------------------
23197852 360void AliITStrackerMI::ReadBadFromDetTypeRec() {
361 //--------------------------------------------------------------------
362 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
363 //i.e. from OCDB
364 //--------------------------------------------------------------------
365
366 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
367
4187a601 368 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 369
a70ed6ad 370 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 371
372 // ITS channels map
373 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 374 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 375
376 // ITS detectors and chips
377 Int_t i=0,j=0,k=0,ndet=0;
378 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 379 Int_t nBadDetsPerLayer=0;
23197852 380 ndet=AliITSgeomTGeo::GetNDetectors(i);
381 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
382 for (k=1; k<ndet+1; k++) {
383 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 384 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 385 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 386 } // end loop on detectors
387 } // end loop on ladders
e9b15b0c 388 AliInfo(Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 389 } // end loop on layers
390
391 return;
392}
393//------------------------------------------------------------------------
e43c066c 394Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
395 //--------------------------------------------------------------------
396 //This function loads ITS clusters
397 //--------------------------------------------------------------------
2b295109 398
399 TClonesArray *clusters = NULL;
400 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
401 clusters=rpcont->FetchClusters(0,cTree);
9cd19c63 402 if(!clusters) return 1;
403
2b295109 404 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
405 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
406 return 1;
e43c066c 407 }
23197852 408 Int_t i=0,j=0,ndet=0;
e43c066c 409 Int_t detector=0;
23197852 410 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
411 ndet=fgLayers[i].GetNdetectors();
e43c066c 412 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
413 for (; j<jmax; j++) {
2b295109 414 // if (!cTree->GetEvent(j)) continue;
415 clusters = rpcont->UncheckedGetClusters(j);
416 if(!clusters)continue;
e43c066c 417 Int_t ncl=clusters->GetEntriesFast();
418 SignDeltas(clusters,GetZ());
1f3e997f 419
e43c066c 420 while (ncl--) {
00a7cc50 421 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 422 detector=c->GetDetectorIndex();
a504d56f 423
75fb37cc 424 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 425
426 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
427 if(retval) {
428 AliWarning(Form("Too many clusters on layer %d!",i));
429 break;
430 }
e43c066c 431 }
6262dd3d 432
afd25725 433 // add dead zone "virtual" cluster in SPD, if there is a cluster within
434 // zwindow cm from the dead zone
bf1cd124 435 // This method assumes that fSPDdetzcentre is ordered from -z to +z
afd25725 436 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 437 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 438 Int_t lab[4] = {0,0,0,detector};
439 Int_t info[3] = {0,0,i};
6518a6c5 440 Float_t q = 0.; // this identifies virtual clusters
9cd19c63 441 Float_t hit[6] = {xdead,
afd25725 442 0.,
443 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
444 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
9cd19c63 445 q,
446 0.};
afd25725 447 Bool_t local = kTRUE;
448 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 449 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 450 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
451 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 452 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 453 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
454 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 455 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 456 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
457 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 458 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 459 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
460 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 461 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 462 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
463 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 464 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 465 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
466 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 467 }
6518a6c5 468 } // "virtual" clusters in SPD
e43c066c 469
470 }
471 //
472 fgLayers[i].ResetRoad(); //road defined by the cluster density
473 fgLayers[i].SortClusters();
474 }
475
4fa7f7d1 476 // check whether we have to skip some layers
477 SetForceSkippingOfLayer();
478
e43c066c 479 return 0;
480}
44347160 481//------------------------------------------------------------------------
e43c066c 482void AliITStrackerMI::UnloadClusters() {
483 //--------------------------------------------------------------------
484 //This function unloads ITS clusters
485 //--------------------------------------------------------------------
e50912db 486 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 487}
44347160 488//------------------------------------------------------------------------
23197852 489void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
490 //--------------------------------------------------------------------
491 // Publishes all pointers to clusters known to the tracker into the
492 // passed object array.
493 // The ownership is not transfered - the caller is not expected to delete
494 // the clusters.
495 //--------------------------------------------------------------------
496
497 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
498 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
499 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
500 array->AddLast(cl);
501 }
502 }
503
504 return;
505}
506//------------------------------------------------------------------------
44396017 507Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 508 //--------------------------------------------------------------------
509 // Correction for the material between the TPC and the ITS
e43c066c 510 //--------------------------------------------------------------------
e50912db 511 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
512 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
513 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
514 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
515 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
516 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
517 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
518 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 519 } else {
44396017 520 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 521 return 0;
e43c066c 522 }
523
e50912db 524 return 1;
e43c066c 525}
44347160 526//------------------------------------------------------------------------
af885e0f 527Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 528 //--------------------------------------------------------------------
529 // This functions reconstructs ITS tracks
530 // The clusters must be already loaded !
531 //--------------------------------------------------------------------
fddf8459 532
4fa7f7d1 533 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 534
e50912db 535 fTrackingPhase="Clusters2Tracks";
dc422a31 536 //
537 // RS
04315dad 538 fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
dc422a31 539 fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
540 fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
541 //
e43c066c 542 TObjArray itsTracks(15000);
628e7bb0 543 fOriginal.Clear();
81e97e0d 544 fEsd = event; // store pointer to the esd
afd25725 545
9a5326b1 546 // temporary (for cosmics)
547 if(event->GetVertex()) {
548 TString title = event->GetVertex()->GetTitle();
549 if(title.Contains("cosmics")) {
550 Double_t xyz[3]={GetX(),GetY(),GetZ()};
551 Double_t exyz[3]={0.1,0.1,0.1};
552 SetVertex(xyz,exyz);
553 }
554 }
555 // temporary
75a74b11 556 Int_t noesd = 0;
e43c066c 557 {/* Read ESD tracks */
afd25725 558 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 559 Int_t nentr=event->GetNumberOfTracks();
75a74b11 560 noesd=nentr;
561 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 562 while (nentr--) {
563 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 564 // ---- for debugging:
565 //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 566
567 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
568 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
569 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 570 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
763bdf3e 571 AliITStrackMI *t = new AliITStrackMI(*esd);
b9671574 572 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
573 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 574
575
afd25725 576 // look at the ESD mass hypothesys !
577 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 578 // write expected q
b9671574 579 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 580
afd25725 581 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 582 //track - can be V0 according to TPC
afd25725 583 } else {
584 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 585 delete t;
586 continue;
e50912db 587 }
afd25725 588 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 589 delete t;
590 continue;
591 }
6c23ffed 592 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 593 delete t;
594 continue;
595 }
e50912db 596 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 597 delete t;
598 continue;
599 }
e43c066c 600 }
b9671574 601 t->SetReconstructed(kFALSE);
e43c066c 602 itsTracks.AddLast(t);
628e7bb0 603 fOriginal.AddLast(t);
e43c066c 604 }
605 } /* End Read ESD tracks */
606
607 itsTracks.Sort();
628e7bb0 608 fOriginal.Sort();
e43c066c 609 Int_t nentr=itsTracks.GetEntriesFast();
610 fTrackHypothesys.Expand(nentr);
81e97e0d 611 fBestHypothesys.Expand(nentr);
afd25725 612 MakeCoefficients(nentr);
513ab112 613 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 614 Int_t ntrk=0;
afd25725 615 // THE TWO TRACKING PASSES
e43c066c 616 for (fPass=0; fPass<2; fPass++) {
617 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 618 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 619 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 620 if (t==0) continue; //this track has been already tracked
1c97ce2f 621 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 622 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 623 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 624 if (fConstraint[fPass]) {
625 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
626 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
627 }
e43c066c 628
629 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 630 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 631 fI = 6;
632 ResetTrackToFollow(*t);
633 ResetBestTrack();
6518a6c5 634
e50912db 635 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 636
e43c066c 637
638 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
639 //
ae00569a 640 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 641 if (!besttrack) continue;
642 besttrack->SetLabel(tpcLabel);
643 // besttrack->CookdEdx();
644 CookdEdx(besttrack);
b9671574 645 besttrack->SetFakeRatio(1.);
e43c066c 646 CookLabel(besttrack,0.); //For comparison only
e43c066c 647 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 648 t->SetWinner(besttrack);
628e7bb0 649
628e7bb0 650 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
651
b9671574 652 t->SetReconstructed(kTRUE);
1c97ce2f 653 ntrk++;
4187a601 654 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 655 }
656 GetBestHypothesysMIP(itsTracks);
afd25725 657 } // end loop on the two tracking passes
a4354152 658 //
659 if (fFlagFakes) FlagFakes(itsTracks);
660 //
cd90f0a2 661 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
662 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 663 fAfterV0 = kTRUE;
628e7bb0 664 //
a0b53cc4 665 itsTracks.Clear();
e43c066c 666 //
667 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 668 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 669 TObjArray * array =(TObjArray*)fTrackHypothesys.At(ientry);
e43c066c 670 if (array) array->Delete();
671 delete fTrackHypothesys.RemoveAt(ientry);
672 }
673
674 fTrackHypothesys.Delete();
4ffece29 675 entries = fBestHypothesys.GetEntriesFast();
676 for (Int_t ientry=0; ientry<entries; ientry++) {
3f4cca6e 677 TObjArray * array =(TObjArray*)fBestHypothesys.At(ientry);
4ffece29 678 if (array) array->Delete();
679 delete fBestHypothesys.RemoveAt(ientry);
680 }
81e97e0d 681 fBestHypothesys.Delete();
628e7bb0 682 fOriginal.Clear();
afd25725 683 delete [] fCoefficients;
684 fCoefficients=0;
e50912db 685 DeleteTrksMaterialLUT();
686
75a74b11 687 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 688
689 fTrackingPhase="Default";
628e7bb0 690
e43c066c 691 return 0;
692}
44347160 693//------------------------------------------------------------------------
af885e0f 694Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 695 //--------------------------------------------------------------------
696 // This functions propagates reconstructed ITS tracks back
697 // The clusters must be loaded !
698 //--------------------------------------------------------------------
e50912db 699 fTrackingPhase="PropagateBack";
e43c066c 700 Int_t nentr=event->GetNumberOfTracks();
75a74b11 701 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 702
703 Int_t ntrk=0;
704 for (Int_t i=0; i<nentr; i++) {
705 AliESDtrack *esd=event->GetTrack(i);
706
707 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
708 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
709
763bdf3e 710 AliITStrackMI *t = new AliITStrackMI(*esd);
711
b9671574 712 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 713
714 ResetTrackToFollow(*t);
4fa7f7d1 715
67178f34 716 /*
9a5326b1 717 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 718 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 719 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
720 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
721 fTrackToFollow.StartTimeIntegral();
722 // from vertex to outside pipe
723 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 724 }*/
725 // Start time integral and add distance from current position to vertex
726 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
727 fTrackToFollow.GetXYZ(xyzTrk);
728 Double_t dst2 = 0.;
729 for (Int_t icoord=0; icoord<3; icoord++) {
730 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
731 dst2 += di*di;
e43c066c 732 }
67178f34 733 fTrackToFollow.StartTimeIntegral();
734 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 735
6c94f330 736 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 737 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
738 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 739 delete t;
740 continue;
741 }
742 fTrackToFollow.SetLabel(t->GetLabel());
743 //fTrackToFollow.CookdEdx();
744 CookLabel(&fTrackToFollow,0.); //For comparison only
745 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
746 //UseClusters(&fTrackToFollow);
747 ntrk++;
748 }
749 delete t;
750 }
751
75a74b11 752 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 753
e50912db 754 fTrackingPhase="Default";
755
e43c066c 756 return 0;
757}
44347160 758//------------------------------------------------------------------------
af885e0f 759Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 760 //--------------------------------------------------------------------
761 // This functions refits ITS tracks using the
762 // "inward propagated" TPC tracks
763 // The clusters must be loaded !
764 //--------------------------------------------------------------------
e50912db 765 fTrackingPhase="RefitInward";
44396017 766
cd90f0a2 767 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 768
794d9013 769 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
770 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
771
e43c066c 772 Int_t nentr=event->GetNumberOfTracks();
75a74b11 773 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 774
775 Int_t ntrk=0;
776 for (Int_t i=0; i<nentr; i++) {
777 AliESDtrack *esd=event->GetTrack(i);
778
779 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
780 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
781 if (esd->GetStatus()&AliESDtrack::kTPCout)
782 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
783
763bdf3e 784 AliITStrackMI *t = new AliITStrackMI(*esd);
785
b9671574 786 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 787 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 788 delete t;
789 continue;
790 }
791
792 ResetTrackToFollow(*t);
793 fTrackToFollow.ResetClusters();
794
ef3508c5 795 // ITS standalone tracks
796 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
6c94f330 797 fTrackToFollow.ResetCovariance(10.);
ef3508c5 798 // protection for loopers that can have parameters screwed up
799 if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
800 TMath::Abs(fTrackToFollow.GetZ())>1000.) {
801 delete t;
802 continue;
803 }
804 }
e43c066c 805
806 //Refitting...
58e8dc31 807 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
808 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 809
4187a601 810 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
794d9013 811 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
4187a601 812 AliDebug(2," refit OK");
e43c066c 813 fTrackToFollow.SetLabel(t->GetLabel());
814 // fTrackToFollow.CookdEdx();
815 CookdEdx(&fTrackToFollow);
816
817 CookLabel(&fTrackToFollow,0.0); //For comparison only
818
9a5326b1 819 //The beam pipe
e50912db 820 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 821 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 822 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 823 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
824 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 825 Double_t r[3]={0.,0.,0.};
9a5326b1 826 Double_t maxD=3.;
827 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
828 ntrk++;
e43c066c 829 }
830 }
831 delete t;
832 }
833
75a74b11 834 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 835
e50912db 836 fTrackingPhase="Default";
837
e43c066c 838 return 0;
839}
44347160 840//------------------------------------------------------------------------
e43c066c 841AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
842 //--------------------------------------------------------------------
843 // Return pointer to a given cluster
844 //--------------------------------------------------------------------
845 Int_t l=(index & 0xf0000000) >> 28;
846 Int_t c=(index & 0x0fffffff) >> 00;
847 return fgLayers[l].GetCluster(c);
848}
9a5326b1 849//------------------------------------------------------------------------
df29e9a4 850Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 851 //--------------------------------------------------------------------
df29e9a4 852 // Get track space point with index i
9a5326b1 853 //--------------------------------------------------------------------
60066577 854
78b03929 855 Int_t l=(index & 0xf0000000) >> 28;
856 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 857 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 858 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 859
60066577 860 Float_t xyz[3];
861 Float_t cov[6];
862 cl->GetGlobalXYZ(xyz);
863 cl->GetGlobalCov(cov);
864 p.SetXYZ(xyz, cov);
be77c8c9 865 p.SetCharge(cl->GetQ());
ebbcf1ea 866 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 867 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 868 p.SetClusterType(cl->GetClusterType());
ae079791 869 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 870 switch (l) {
871 case 0:
ae079791 872 iLayer = AliGeomManager::kSPD1;
df29e9a4 873 break;
874 case 1:
ae079791 875 iLayer = AliGeomManager::kSPD2;
df29e9a4 876 break;
877 case 2:
ae079791 878 iLayer = AliGeomManager::kSDD1;
df29e9a4 879 break;
880 case 3:
ae079791 881 iLayer = AliGeomManager::kSDD2;
9a5326b1 882 break;
883 case 4:
884 iLayer = AliGeomManager::kSSD1;
885 break;
886 case 5:
887 iLayer = AliGeomManager::kSSD2;
888 break;
889 default:
890 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
891 break;
892 };
893 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
894 p.SetVolumeID((UShort_t)volid);
895 return kTRUE;
896}
897//------------------------------------------------------------------------
898Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
899 AliTrackPoint& p, const AliESDtrack *t) {
900 //--------------------------------------------------------------------
901 // Get track space point with index i
902 // (assign error estimated during the tracking)
903 //--------------------------------------------------------------------
904
905 Int_t l=(index & 0xf0000000) >> 28;
906 Int_t c=(index & 0x0fffffff) >> 00;
907 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
908 Int_t idet = cl->GetDetectorIndex();
4187a601 909
9a5326b1 910 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
911
912 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
913 Float_t detxy[2];
914 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
915 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
916 Double_t alpha = t->GetAlpha();
917 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
242bd643 918 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
9a5326b1 919 phi += alpha-det.GetPhi();
920 Float_t tgphi = TMath::Tan(phi);
921
922 Float_t tgl = t->GetTgl(); // tgl about const along track
923 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
924
d9ead1a0 925 Float_t errtrky,errtrkz,covyz;
8c139cf3 926 Bool_t addMisalErr=kFALSE;
d9ead1a0 927 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 928
929 Float_t xyz[3];
930 Float_t cov[6];
931 cl->GetGlobalXYZ(xyz);
932 // cl->GetGlobalCov(cov);
933 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 934 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 935 tmpcl.GetGlobalCov(cov);
936
937 p.SetXYZ(xyz, cov);
be77c8c9 938 p.SetCharge(cl->GetQ());
ebbcf1ea 939 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 940 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 941 p.SetClusterType(cl->GetClusterType());
9a5326b1 942
943 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
944 switch (l) {
945 case 0:
946 iLayer = AliGeomManager::kSPD1;
947 break;
948 case 1:
949 iLayer = AliGeomManager::kSPD2;
950 break;
951 case 2:
952 iLayer = AliGeomManager::kSDD1;
953 break;
954 case 3:
955 iLayer = AliGeomManager::kSDD2;
df29e9a4 956 break;
957 case 4:
ae079791 958 iLayer = AliGeomManager::kSSD1;
df29e9a4 959 break;
960 case 5:
ae079791 961 iLayer = AliGeomManager::kSSD2;
df29e9a4 962 break;
963 default:
964 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
965 break;
966 };
ae079791 967 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 968
df29e9a4 969 p.SetVolumeID((UShort_t)volid);
970 return kTRUE;
971}
44347160 972//------------------------------------------------------------------------
81e97e0d 973void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 974{
975 //--------------------------------------------------------------------
976 // Follow prolongation tree
977 //--------------------------------------------------------------------
81e97e0d 978 //
afd25725 979 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
980 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
981
2755f080 982
b9671574 983 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 984 if (esd->GetV0Index(0)>0) {
81e97e0d 985 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 986 // mapping of ESD track is different as ITS track in Containers
81e97e0d 987 // Need something more stable
44347160 988 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 989 for (Int_t i=0;i<3;i++){
990 Int_t index = esd->GetV0Index(i);
991 if (index==0) break;
d6a49f20 992 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 993 if (vertex->GetStatus()<0) continue; // rejected V0
994 //
afd25725 995 if (esd->GetSign()>0) {
996 vertex->SetIndex(0,esdindex);
997 } else {
998 vertex->SetIndex(1,esdindex);
999 }
81e97e0d 1000 }
1001 }
1002 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
1003 if (!bestarray){
1004 bestarray = new TObjArray(5);
4ffece29 1005 bestarray->SetOwner();
81e97e0d 1006 fBestHypothesys.AddAt(bestarray,esdindex);
1007 }
e43c066c 1008
81e97e0d 1009 //
e43c066c 1010 //setup tree of the prolongations
1011 //
a4354152 1012 const int kMaxTr = 100; //RS
1013 static AliITStrackMI tracks[7][kMaxTr];
15dd636f 1014 AliITStrackMI *currenttrack;
1015 static AliITStrackMI currenttrack1;
1016 static AliITStrackMI currenttrack2;
1017 static AliITStrackMI backuptrack;
e43c066c 1018 Int_t ntracks[7];
a4354152 1019 Int_t nindexes[7][kMaxTr];
1020 Float_t normalizedchi2[kMaxTr];
e43c066c 1021 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 1022 otrack->SetNSkipped(0);
15dd636f 1023 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 1024 ntracks[6]=1;
81e97e0d 1025 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 1026 Int_t modstatus = 1; // found
1027 Float_t xloc,zloc;
e43c066c 1028 //
1029 //
1030 // follow prolongations
e50912db 1031 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 1032 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 1033 fI = ilayer;
e43c066c 1034 //
2755f080 1035 AliITSlayer &layer=fgLayers[ilayer];
1036 Double_t r = layer.GetR();
e43c066c 1037 ntracks[ilayer]=0;
1038 //
1039 //
2755f080 1040 Int_t nskipped=0;
e43c066c 1041 Float_t nused =0;
e50912db 1042 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
a4354152 1043 // printf("LR %d Tr:%d NSeeds: %d\n",ilayer,itrack,ntracks[ilayer+1]);
e43c066c 1044 //set current track
a4354152 1045 if (ntracks[ilayer]>=kMaxTr) break;
b9671574 1046 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1047 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 1048 if (ntracks[ilayer]>15+ilayer){
b9671574 1049 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1050 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 1051 }
1052
15dd636f 1053 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1054
afd25725 1055 // material between SSD and SDD, SDD and SPD
e50912db 1056 if (ilayer==3)
1057 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1058 if (ilayer==1)
1059 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1060
2755f080 1061 // detector number
8602c008 1062 Double_t phi,z;
1063 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1064 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1065
1066 Double_t trackGlobXYZ1[3];
d1181f10 1067 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1068
2755f080 1069 // Get the budget to the primary vertex for the current track being prolonged
a4354152 1070 Double_t budgetToPrimVertex = 0;
1071 double xMSLrs[9],x2X0MSLrs[9]; // needed for ImproveKalman
1072 int nMSLrs = 0;
1073 //
1074 if (fUseImproveKalman) nMSLrs = GetEffectiveThicknessLbyL(xMSLrs,x2X0MSLrs);
1075 else budgetToPrimVertex = GetEffectiveThickness();
1076 //
2755f080 1077 // check if we allow a prolongation without point
6518a6c5 1078 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1079 if (skip) {
1080 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1081 // propagate to the layer radius
d1181f10 1082 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1083 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1084 // apply correction for material of the current layer
1085 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1086 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1087 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1088 vtrack->SetClIndex(ilayer,-1);
ae00569a 1089 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1090 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1091 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1092 }
a4354152 1093 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1094 fUseImproveKalman ?
1095 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1096 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1097 }
2755f080 1098 ntracks[ilayer]++;
6518a6c5 1099 continue;
2755f080 1100 }
1101
1102 // track outside layer acceptance in z
1103 if (idet<0) continue;
1104
1105 //propagate to the intersection with the detector plane
1106 const AliITSdetector &det=layer.GetDetector(idet);
1107 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1108 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1109 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1110 currenttrack1.SetDetectorIndex(idet);
1111 currenttrack2.SetDetectorIndex(idet);
d1181f10 1112 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1113
afd25725 1114 //***************
1c97ce2f 1115 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1116 //
2755f080 1117 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1118 Double_t zmin,zmax,ymin,ymax;
1119 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1120
afd25725 1121 // select clusters in road
e43c066c 1122 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1123 //********************
44347160 1124
afd25725 1125 // Define criteria for track-cluster association
44347160 1126 Double_t msz = currenttrack1.GetSigmaZ2() +
1127 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1128 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1129 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1130 Double_t msy = currenttrack1.GetSigmaY2() +
1131 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1132 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1133 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1134 if (constrain) {
1135 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1136 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1137 } else {
1138 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1139 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1140 }
1141 msz = 1./msz; // 1/RoadZ^2
1142 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1143
e43c066c 1144 //
e43c066c 1145 //
afd25725 1146 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1147 //
afd25725 1148 const AliITSRecPoint *cl=0;
1149 Int_t clidx=-1;
1150 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1151 Bool_t deadzoneSPD=kFALSE;
e43c066c 1152 currenttrack = &currenttrack1;
6518a6c5 1153
ae00569a 1154 // check if the road contains a dead zone
23197852 1155 Bool_t noClusters = kFALSE;
1156 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1157 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1158 Double_t dz=0.5*(zmax-zmin);
1159 Double_t dy=0.5*(ymax-ymin);
1160 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1161 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1162 // create a prolongation without clusters (check also if there are no clusters in the road)
1163 if (dead ||
23197852 1164 (noClusters &&
ae00569a 1165 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1166 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1167 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1168 if (dead==0) {
1169 modstatus = 5; // no cls in road
1170 } else if (dead==1) {
1171 modstatus = 7; // holes in z in SPD
f8720bda 1172 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1173 modstatus = 2; // dead from OCDB
1174 }
1175 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1176 // apply correction for material of the current layer
1177 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1178 if (constrain) { // apply vertex constrain
1179 updatetrack->SetConstrain(constrain);
1180 Bool_t isPrim = kTRUE;
1181 if (ilayer<4) { // check that it's close to the vertex
1182 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1183 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1184 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1185 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1186 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1187 }
a4354152 1188 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1189 fUseImproveKalman ?
1190 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1191 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1192 }
6518a6c5 1193 }
f8720bda 1194 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1195 if (dead) {
ae00569a 1196 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1197 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1198 deadzoneSPD=kTRUE;
f8720bda 1199 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1200 updatetrack->SetDeadZoneProbability(ilayer,1.);
1201 } else if (dead==4) { // at least a single dead channel from OCDB
1202 updatetrack->SetDeadZoneProbability(ilayer,0.);
1203 }
6518a6c5 1204 }
1205 ntracks[ilayer]++;
1206 }
1207
ae00569a 1208 clidx=-1;
6518a6c5 1209 // loop over clusters in the road
afd25725 1210 while ((cl=layer.GetNextCluster(clidx))!=0) {
a4354152 1211 if (ntracks[ilayer]>int(0.95*kMaxTr)) break; //space for skipped clusters
afd25725 1212 Bool_t changedet =kFALSE;
88e3c173 1213 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1214 Int_t idetc=cl->GetDetectorIndex();
afd25725 1215
a5d0fae6 1216 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1217 // take into account misalignment (bring track to real detector plane)
1218 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1219 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1220 // a first cut on track-cluster distance
1221 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1222 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1223 { // cluster not associated to track
4187a601 1224 AliDebug(2,"not associated");
421c4ba7 1225 // MvL: added here as well
1226 // bring track back to ideal detector plane
1227 currenttrack->Propagate(xTrOrig);
1c97ce2f 1228 continue;
1229 }
1230 // bring track back to ideal detector plane
9be1d1c7 1231 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1232 } else { // have to move track to cluster's detector
a5d0fae6 1233 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1234 // a first cut on track-cluster distance
a5d0fae6 1235 Double_t y;
1c97ce2f 1236 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1237 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1238 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1239 continue; // cluster not associated to track
e43c066c 1240 //
15dd636f 1241 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1242 changedet = kTRUE;
e43c066c 1243 currenttrack =&currenttrack2;
a5d0fae6 1244 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1245 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1246 changedet = kFALSE;
e43c066c 1247 continue;
1248 }
a5d0fae6 1249 currenttrack->SetDetectorIndex(idetc);
e50912db 1250 // Get again the budget to the primary vertex
1251 // for the current track being prolonged, if had to change detector
1252 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1253 }
1254
afd25725 1255 // calculate track-clusters chi2
1256 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1257 // chi2 cut
4187a601 1258 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1259 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1260 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
a4354152 1261 if (ntracks[ilayer]>=kMaxTr) continue;
15dd636f 1262 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1263 updatetrack->SetClIndex(ilayer,-1);
afd25725 1264 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1265
88e3c173 1266 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1267 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1268 AliDebug(2,"update failed");
1c97ce2f 1269 continue;
1270 }
09cf9d66 1271 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1272 modstatus = 1; // found
6518a6c5 1273 } else { // virtual cluster in dead zone
b9671574 1274 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1275 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1276 modstatus = 7; // holes in z in SPD
1277 }
1278
1279 if (changedet) {
1280 Float_t xlocnewdet,zlocnewdet;
d1181f10 1281 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1282 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1283 }
ae00569a 1284 } else {
1285 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1286 }
afd25725 1287 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1288
1289 // apply correction for material of the current layer
e50912db 1290 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1291
afd25725 1292 if (constrain) { // apply vertex constrain
b9671574 1293 updatetrack->SetConstrain(constrain);
e43c066c 1294 Bool_t isPrim = kTRUE;
afd25725 1295 if (ilayer<4) { // check that it's close to the vertex
b9671574 1296 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1297 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1298 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1299 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1300 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1301 }
a4354152 1302 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1303 fUseImproveKalman ?
1304 updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1305 updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1306 }
e43c066c 1307 } //apply vertex constrain
1308 ntracks[ilayer]++;
afd25725 1309 } // create new hypothesis
4187a601 1310 else {
1311 AliDebug(2,"chi2 too large");
1312 }
1313
2755f080 1314 } // loop over possible prolongations
1315
1316 // allow one prolongation without clusters
a4354152 1317 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<kMaxTr) {
15dd636f 1318 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1319 // apply correction for material of the current layer
1320 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1321 vtrack->SetClIndex(ilayer,-1);
ae00569a 1322 modstatus = 3; // skipped
1323 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
a4354152 1324 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
1325 fUseImproveKalman ?
1326 vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
1327 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1328 }
b9671574 1329 vtrack->IncrementNSkipped();
e43c066c 1330 ntracks[ilayer]++;
1331 }
1332
6262dd3d 1333
e50912db 1334 } // loop over tracks in layer ilayer+1
afd25725 1335
1336 //loop over track candidates for the current layer
e43c066c 1337 //
1338 //
1339 Int_t accepted=0;
1340
afd25725 1341 Int_t golden=0;
e43c066c 1342 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1343 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1344 if (normalizedchi2[itrack] <
1345 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1346 if (ilayer>4) {
1347 accepted++;
1348 } else {
1349 if (constrain) { // constrain
afd25725 1350 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1351 accepted++;
44347160 1352 } else { // !constrain
afd25725 1353 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1354 accepted++;
44347160 1355 }
e43c066c 1356 }
1357 }
afd25725 1358 // sort tracks by increasing normalized chi2
1359 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1360 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1361 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
a4354152 1362 // if (ntracks[ilayer]>90) ntracks[ilayer]=90;
04315dad 1363 if (ntracks[ilayer]>int(kMaxTr*0.9)) ntracks[ilayer]=int(kMaxTr*0.9);
afd25725 1364 } // end loop over layers
1365
afd25725 1366
1367 //
1368 // Now select tracks to be kept
1369 //
44347160 1370 Int_t max = constrain ? 20 : 5;
e43c066c 1371
afd25725 1372 // tracks that reach layer 0 (SPD inner)
44347160 1373 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1374 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1375 if (track.GetNumberOfClusters()<2) continue;
afd25725 1376 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1377 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1378 continue;
1379 }
15dd636f 1380 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1381 }
afd25725 1382
1383 // tracks that reach layer 1 (SPD outer)
628e7bb0 1384 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1385 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1386 if (track.GetNumberOfClusters()<4) continue;
afd25725 1387 if (!constrain && track.GetNormChi2(1) >
1388 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1389 if (constrain) track.IncrementNSkipped();
81e97e0d 1390 if (!constrain) {
b9671574 1391 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1392 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1393 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1394 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1395 }
1396 }
15dd636f 1397 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1398 }
afd25725 1399
6518a6c5 1400 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1401 if (!constrain){
628e7bb0 1402 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1403 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1404 if (track.GetNumberOfClusters()<3) continue;
9cd19c63 1405 if (track.GetNormChi2(2) >
afd25725 1406 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
9cd19c63 1407 track.SetD(0,track.GetD(GetX(),GetY()));
1408 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1409 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1410 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1411 }
15dd636f 1412 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1413 }
1414 }
81e97e0d 1415
afd25725 1416 if (!constrain) {
81e97e0d 1417 //
afd25725 1418 // register best track of each layer - important for V0 finder
81e97e0d 1419 //
1420 for (Int_t ilayer=0;ilayer<5;ilayer++){
1421 if (ntracks[ilayer]==0) continue;
1422 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1423 if (track.GetNumberOfClusters()<1) continue;
1424 CookLabel(&track,0);
1425 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1426 }
1427 }
1428 //
1429 // update TPC V0 information
1430 //
b9671574 1431 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1432 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1433 for (Int_t i=0;i<3;i++){
b9671574 1434 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1435 if (index==0) break;
44347160 1436 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1437 if (vertex->GetStatus()<0) continue; // rejected V0
1438 //
6c94f330 1439 if (otrack->GetSign()>0) {
81e97e0d 1440 vertex->SetIndex(0,esdindex);
1441 }
1442 else{
1443 vertex->SetIndex(1,esdindex);
1444 }
1445 //find nearest layer with track info
b75d63a7 1446 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1447 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1448 Int_t nearest = nearestold;
9cd19c63 1449 for (Int_t ilayer =nearest;ilayer<7;ilayer++){
81e97e0d 1450 if (ntracks[nearest]==0){
1451 nearest = ilayer;
1452 }
1453 }
1454 //
1455 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1456 if (nearestold<5&&nearest<5){
b9671574 1457 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1458 if (accept){
6c94f330 1459 if (track.GetSign()>0) {
b75d63a7 1460 vertex->SetParamP(track);
81e97e0d 1461 vertex->Update(fprimvertex);
44347160 1462 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1463 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1464 }else{
b75d63a7 1465 vertex->SetParamN(track);
81e97e0d 1466 vertex->Update(fprimvertex);
1467 //vertex->SetIndex(1,track.fESDtrack->GetID());
1468 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1469 }
1470 vertex->SetStatus(vertex->GetStatus()+1);
1471 }else{
44347160 1472 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1473 }
1474 }
81e97e0d 1475 }
afd25725 1476 }
1477
e43c066c 1478}
44347160 1479//------------------------------------------------------------------------
e43c066c 1480AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1481{
1482 //--------------------------------------------------------------------
1483 //
1484 //
1485 return fgLayers[layer];
1486}
44347160 1487//------------------------------------------------------------------------
8221b41b 1488AliITStrackerMI::AliITSlayer::AliITSlayer():
1489fR(0),
1490fPhiOffset(0),
1491fNladders(0),
1492fZOffset(0),
1493fNdetectors(0),
1494fDetectors(0),
1495fN(0),
1496fDy5(0),
1497fDy10(0),
1498fDy20(0),
1499fClustersCs(0),
1500fClusterIndexCs(0),
1501fYcs(0),
1502fZcs(0),
1503fNcs(0),
1504fCurrentSlice(-1),
d9ead1a0 1505fZmin(0),
8221b41b 1506fZmax(0),
1507fYmin(0),
1508fYmax(0),
1509fI(0),
1510fImax(0),
1511fSkip(0),
1512fAccepted(0),
d9ead1a0 1513fRoad(0),
1514fMaxSigmaClY(0),
1515fMaxSigmaClZ(0),
1516fNMaxSigmaCl(3)
1517{
e43c066c 1518 //--------------------------------------------------------------------
1519 //default AliITSlayer constructor
1520 //--------------------------------------------------------------------
e50912db 1521 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1522 fClusterWeight[i]=0;
1523 fClusterTracks[0][i]=-1;
1524 fClusterTracks[1][i]=-1;
1525 fClusterTracks[2][i]=-1;
9cd19c63 1526 fClusterTracks[3][i]=-1;
1527 fY[i]=0;
1528 fZ[i]=0;
1529 }
1530 fYB[0]=0;
1531 fYB[1]=0;
1532
1533 for (Int_t j=0; j<AliITSRecoParam::fgkMaxClusterPerLayer5; j++) {
1534 for (Int_t j1=0; j1<6; j1++) {
1535 fClusters5[j1][j]=0;
1536 fClusterIndex5[j1][j]=-1;
1537 fY5[j1][j]=0;
1538 fZ5[j1][j]=0;
1539 fN5[j1]=0;
1540 fBy5[j1][0]=0;
1541 fBy5[j1][1]=0;
1542 }
1543 }
1544
1545 for (Int_t j=0; j<AliITSRecoParam::fgkMaxClusterPerLayer10; j++) {
1546 for (Int_t j1=0; j1<11; j1++) {
1547 fClusters10[j1][j]=0;
1548 fClusterIndex10[j1][j]=-1;
1549 fY10[j1][j]=0;
1550 fZ10[j1][j]=0;
1551 fN10[j1]=0;
1552 fBy10[j1][0]=0;
1553 fBy10[j1][1]=0;
1554 }
e43c066c 1555 }
9cd19c63 1556
1557 for (Int_t j=0; j<AliITSRecoParam::fgkMaxClusterPerLayer20; j++) {
1558 for (Int_t j1=0; j1<21; j1++) {
1559 fClusters20[j1][j]=0;
1560 fClusterIndex20[j1][j]=-1;
1561 fY20[j1][j]=0;
1562 fZ20[j1][j]=0;
1563 fN20[j1]=0;
1564 fBy20[j1][0]=0;
1565 fBy20[j1][1]=0;
1566 }
1567 }
e8c2bf0d 1568 for(Int_t i=0;i<AliITSRecoParam::fgkMaxClusterPerLayer;i++){
1569 fClusters[i]=NULL;
1570 fClusterIndex[i]=0;
1571 }
e43c066c 1572}
44347160 1573//------------------------------------------------------------------------
e43c066c 1574AliITStrackerMI::AliITSlayer::
8221b41b 1575AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1576fR(r),
1577fPhiOffset(p),
1578fNladders(nl),
1579fZOffset(z),
1580fNdetectors(nd),
1581fDetectors(0),
1582fN(0),
1583fDy5(0),
1584fDy10(0),
1585fDy20(0),
1586fClustersCs(0),
1587fClusterIndexCs(0),
1588fYcs(0),
1589fZcs(0),
1590fNcs(0),
1591fCurrentSlice(-1),
d9ead1a0 1592fZmin(0),
8221b41b 1593fZmax(0),
1594fYmin(0),
1595fYmax(0),
1596fI(0),
1597fImax(0),
1598fSkip(0),
1599fAccepted(0),
d9ead1a0 1600fRoad(0),
1601fMaxSigmaClY(0),
1602fMaxSigmaClZ(0),
1603fNMaxSigmaCl(3) {
e43c066c 1604 //--------------------------------------------------------------------
1605 //main AliITSlayer constructor
1606 //--------------------------------------------------------------------
e43c066c 1607 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1608 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
9cd19c63 1609
1610 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1611 fClusterWeight[i]=0;
1612 fClusterTracks[0][i]=-1;
1613 fClusterTracks[1][i]=-1;
1614 fClusterTracks[2][i]=-1;
1615 fClusterTracks[3][i]=-1;
1616 fY[i]=0;
1617 fZ[i]=0;
1618 }
1619
1620 fYB[0]=0;
1621 fYB[1]=0;
1622
1623 for (Int_t j=0; j<AliITSRecoParam::fgkMaxClusterPerLayer5; j++) {
1624 for (Int_t j1=0; j1<6; j1++) {
1625 fClusters5[j1][j]=0;
1626 fClusterIndex5[j1][j]=-1;
1627 fY5[j1][j]=0;
1628 fZ5[j1][j]=0;
1629 fN5[j1]=0;
1630 fBy5[j1][0]=0;
1631 fBy5[j1][1]=0;
1632 }
1633 }
1634
1635 for (Int_t j=0; j<AliITSRecoParam::fgkMaxClusterPerLayer10; j++) {
1636 for (Int_t j1=0; j1<11; j1++) {
1637 fClusters10[j1][j]=0;
1638 fClusterIndex10[j1][j]=-1;
1639 fY10[j1][j]=0;
1640 fZ10[j1][j]=0;
1641 fN10[j1]=0;
1642 fBy10[j1][0]=0;
1643 fBy10[j1][1]=0;
1644 }
1645 }
1646
1647 for (Int_t j=0; j<AliITSRecoParam::fgkMaxClusterPerLayer20; j++) {
1648 for (Int_t j1=0; j1<21; j1++) {
1649 fClusters20[j1][j]=0;
1650 fClusterIndex20[j1][j]=-1;
1651 fY20[j1][j]=0;
1652 fZ20[j1][j]=0;
1653 fN20[j1]=0;
1654 fBy20[j1][0]=0;
1655 fBy20[j1][1]=0;
1656 }
1657 }
e8c2bf0d 1658 for(Int_t i=0;i<AliITSRecoParam::fgkMaxClusterPerLayer;i++){
1659 fClusters[i]=NULL;
1660 fClusterIndex[i]=0;
1661 }
e43c066c 1662}
225cff59 1663/*
44347160 1664//------------------------------------------------------------------------
8221b41b 1665AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1666fR(layer.fR),
1667fPhiOffset(layer.fPhiOffset),
1668fNladders(layer.fNladders),
1669fZOffset(layer.fZOffset),
1670fNdetectors(layer.fNdetectors),
1671fDetectors(layer.fDetectors),
1672fN(layer.fN),
1673fDy5(layer.fDy5),
1674fDy10(layer.fDy10),
1675fDy20(layer.fDy20),
1676fClustersCs(layer.fClustersCs),
1677fClusterIndexCs(layer.fClusterIndexCs),
1678fYcs(layer.fYcs),
1679fZcs(layer.fZcs),
1680fNcs(layer.fNcs),
1681fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1682fZmin(layer.fZmin),
8221b41b 1683fZmax(layer.fZmax),
1684fYmin(layer.fYmin),
1685fYmax(layer.fYmax),
1686fI(layer.fI),
1687fImax(layer.fImax),
1688fSkip(layer.fSkip),
1689fAccepted(layer.fAccepted),
d9ead1a0 1690fRoad(layer.fRoad),
1691fMaxSigmaClY(layer.fMaxSigmaClY),
1692fMaxSigmaClZ(layer.fMaxSigmaClZ),
1693fNMaxSigmaCl(layer.fNMaxSigmaCl)
1694{
8221b41b 1695 //Copy constructor
1696}
225cff59 1697*/
44347160 1698//------------------------------------------------------------------------
e43c066c 1699AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1700 //--------------------------------------------------------------------
1701 // AliITSlayer destructor
1702 //--------------------------------------------------------------------
23197852 1703 delete [] fDetectors;
e43c066c 1704 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1705 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1706 fClusterWeight[i]=0;
1707 fClusterTracks[0][i]=-1;
1708 fClusterTracks[1][i]=-1;
1709 fClusterTracks[2][i]=-1;
1710 fClusterTracks[3][i]=-1;
1711 }
1712}
44347160 1713//------------------------------------------------------------------------
e43c066c 1714void AliITStrackerMI::AliITSlayer::ResetClusters() {
1715 //--------------------------------------------------------------------
1716 // This function removes loaded clusters
1717 //--------------------------------------------------------------------
1718 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1719 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1720 fClusterWeight[i]=0;
1721 fClusterTracks[0][i]=-1;
1722 fClusterTracks[1][i]=-1;
1723 fClusterTracks[2][i]=-1;
1724 fClusterTracks[3][i]=-1;
1725 }
1726
1727 fN=0;
1728 fI=0;
1729}
44347160 1730//------------------------------------------------------------------------
e43c066c 1731void AliITStrackerMI::AliITSlayer::ResetWeights() {
1732 //--------------------------------------------------------------------
1733 // This function reset weights of the clusters
1734 //--------------------------------------------------------------------
e50912db 1735 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1736 fClusterWeight[i]=0;
1737 fClusterTracks[0][i]=-1;
1738 fClusterTracks[1][i]=-1;
1739 fClusterTracks[2][i]=-1;
1740 fClusterTracks[3][i]=-1;
1741 }
1742 for (Int_t i=0; i<fN;i++) {
00a7cc50 1743 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1744 if (cl&&cl->IsUsed()) cl->Use();
1745 }
1746
1747}
44347160 1748//------------------------------------------------------------------------
e43c066c 1749void AliITStrackerMI::AliITSlayer::ResetRoad() {
1750 //--------------------------------------------------------------------
1751 // This function calculates the road defined by the cluster density
1752 //--------------------------------------------------------------------
1753 Int_t n=0;
1754 for (Int_t i=0; i<fN; i++) {
1755 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1756 }
afd25725 1757 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1758}
44347160 1759//------------------------------------------------------------------------
afd25725 1760Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1761 //--------------------------------------------------------------------
1762 //This function adds a cluster to this layer
1763 //--------------------------------------------------------------------
e50912db 1764 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1765 return 1;
1766 }
1767 fCurrentSlice=-1;
afd25725 1768 fClusters[fN]=cl;
1d4090b7 1769 fN++;
afd25725 1770 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1771 //AD
1772 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1773 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1774 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1775 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1776 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1777 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1778 //AD
1779 /*
afd25725 1780 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1781 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1782 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1783 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1784 */
e43c066c 1785 return 0;
1786}
44347160 1787//------------------------------------------------------------------------
e43c066c 1788void AliITStrackerMI::AliITSlayer::SortClusters()
1789{
1790 //
1791 //sort clusters
1792 //
00a7cc50 1793 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1794 Float_t *z = new Float_t[fN];
1795 Int_t * index = new Int_t[fN];
1796 //
d9ead1a0 1797 fMaxSigmaClY=0.; //AD
1798 fMaxSigmaClZ=0.; //AD
1799
1d4090b7 1800 for (Int_t i=0;i<fN;i++){
1801 z[i] = fClusters[i]->GetZ();
d9ead1a0 1802 // save largest errors in y and z for this layer
1803 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1804 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1805 }
1806 TMath::Sort(fN,z,index,kFALSE);
1807 for (Int_t i=0;i<fN;i++){
1808 clusters[i] = fClusters[index[i]];
1809 }
1810 //
1811 for (Int_t i=0;i<fN;i++){
1812 fClusters[i] = clusters[i];
1813 fZ[i] = fClusters[i]->GetZ();
1814 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1815 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1816 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1817 fY[i] = y;
1818 }
1819 delete[] index;
1820 delete[] z;
1821 delete[] clusters;
1822 //
1823
e43c066c 1824 fYB[0]=10000000;
1825 fYB[1]=-10000000;
1826 for (Int_t i=0;i<fN;i++){
1827 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1828 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1829 fClusterIndex[i] = i;
1830 }
1831 //
1832 // fill slices
1833 fDy5 = (fYB[1]-fYB[0])/5.;
1834 fDy10 = (fYB[1]-fYB[0])/10.;
1835 fDy20 = (fYB[1]-fYB[0])/20.;
1836 for (Int_t i=0;i<6;i++) fN5[i] =0;
1837 for (Int_t i=0;i<11;i++) fN10[i]=0;
1838 for (Int_t i=0;i<21;i++) fN20[i]=0;
1839 //
1840 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;}
1841 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;}
1842 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;}
1843 //
1844 //
1d4090b7 1845 for (Int_t i=0;i<fN;i++)
1846 for (Int_t irot=-1;irot<=1;irot++){
1847 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1848 // slice 5
1849 for (Int_t slice=0; slice<6;slice++){
e50912db 1850 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1851 fClusters5[slice][fN5[slice]] = fClusters[i];
1852 fY5[slice][fN5[slice]] = curY;
1853 fZ5[slice][fN5[slice]] = fZ[i];
1854 fClusterIndex5[slice][fN5[slice]]=i;
1855 fN5[slice]++;
1856 }
e43c066c 1857 }
1d4090b7 1858 // slice 10
1859 for (Int_t slice=0; slice<11;slice++){
e50912db 1860 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1861 fClusters10[slice][fN10[slice]] = fClusters[i];
1862 fY10[slice][fN10[slice]] = curY;
1863 fZ10[slice][fN10[slice]] = fZ[i];
1864 fClusterIndex10[slice][fN10[slice]]=i;
1865 fN10[slice]++;
1866 }
e43c066c 1867 }
1d4090b7 1868 // slice 20
1869 for (Int_t slice=0; slice<21;slice++){
e50912db 1870 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1871 fClusters20[slice][fN20[slice]] = fClusters[i];
1872 fY20[slice][fN20[slice]] = curY;
1873 fZ20[slice][fN20[slice]] = fZ[i];
1874 fClusterIndex20[slice][fN20[slice]]=i;
1875 fN20[slice]++;
1876 }
1877 }
e43c066c 1878 }
1d4090b7 1879
1880 //
1881 // consistency check
1882 //
1883 for (Int_t i=0;i<fN-1;i++){
1884 if (fZ[i]>fZ[i+1]){
ae00569a 1885 printf("Bug\n");
e43c066c 1886 }
1887 }
1d4090b7 1888 //
1889 for (Int_t slice=0;slice<21;slice++)
1890 for (Int_t i=0;i<fN20[slice]-1;i++){
1891 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1892 printf("Bug\n");
1d4090b7 1893 }
1894 }
1895
1896
e43c066c 1897}
44347160 1898//------------------------------------------------------------------------
e43c066c 1899Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1900 //--------------------------------------------------------------------
1901 // This function returns the index of the nearest cluster
1902 //--------------------------------------------------------------------
1903 Int_t ncl=0;
1904 const Float_t *zcl;
1905 if (fCurrentSlice<0) {
1906 ncl = fN;
1907 zcl = fZ;
1908 }
1909 else{
1910 ncl = fNcs;
1911 zcl = fZcs;;
1912 }
1913
1914 if (ncl==0) return 0;
1915 Int_t b=0, e=ncl-1, m=(b+e)/2;
1916 for (; b<e; m=(b+e)/2) {
1917 // if (z > fClusters[m]->GetZ()) b=m+1;
1918 if (z > zcl[m]) b=m+1;
1919 else e=m;
1920 }
1921 return m;
1922}
44347160 1923//------------------------------------------------------------------------
1c97ce2f 1924Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1925 //--------------------------------------------------------------------
1926 // This function computes the rectangular road for this track
1927 //--------------------------------------------------------------------
1928
1929
1930 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1931 // take into account the misalignment: propagate track to misaligned detector plane
1932 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1933
1934 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1935 TMath::Sqrt(track->GetSigmaZ2() +
1936 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1937 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1938 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1939 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1940 TMath::Sqrt(track->GetSigmaY2() +
1941 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1942 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1943 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1944
1945 // track at boundary between detectors, enlarge road
1946 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1947 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1948 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1949 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1950 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1951 Float_t tgl = TMath::Abs(track->GetTgl());
1952 if (tgl > 1.) tgl=1.;
1953 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1954 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1955 Float_t snp = TMath::Abs(track->GetSnp());
1956 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1957 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1958 } // boundary
1959
1960 // add to the road a term (up to 2-3 mm) to deal with misalignments
1961 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1962 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1963
1964 Double_t r = fgLayers[ilayer].GetR();
1965 zmin = track->GetZ() - dz;
1966 zmax = track->GetZ() + dz;
1967 ymin = track->GetY() + r*det.GetPhi() - dy;
1968 ymax = track->GetY() + r*det.GetPhi() + dy;
1969
1970 // bring track back to idead detector plane
1971 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1972
1973 return kTRUE;
1974}
1975//------------------------------------------------------------------------
e43c066c 1976void AliITStrackerMI::AliITSlayer::
1977SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1978 //--------------------------------------------------------------------
1979 // This function sets the "window"
1980 //--------------------------------------------------------------------
1981
628e7bb0 1982 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1983 fYmin = ymin;
1984 fYmax = ymax;
1985 fZmin = zmin;
1986 fZmax = zmax;
1987 // AD
1988 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1989 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1990 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1991 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1992 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1993
e43c066c 1994 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1995 if (ymiddle<fYB[0]) {
1996 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1997 } else if (ymiddle>fYB[1]) {
1998 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1999 }
ae00569a 2000
e43c066c 2001 //
2002 fCurrentSlice =-1;
2003 // defualt take all
2004 fClustersCs = fClusters;
2005 fClusterIndexCs = fClusterIndex;
2006 fYcs = fY;
2007 fZcs = fZ;
2008 fNcs = fN;
628e7bb0 2009 //
e43c066c 2010 //is in 20 slice?
2011 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
2012 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
2013 if (slice<0) slice=0;
2014 if (slice>20) slice=20;
2015 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
2016 if (isOK) {
2017 fCurrentSlice=slice;
2018 fClustersCs = fClusters20[fCurrentSlice];
2019 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
2020 fYcs = fY20[fCurrentSlice];
2021 fZcs = fZ20[fCurrentSlice];
2022 fNcs = fN20[fCurrentSlice];
2023 }
2024 }
2025 //
2026 //is in 10 slice?
2027 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
2028 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
2029 if (slice<0) slice=0;
2030 if (slice>10) slice=10;
2031 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
2032 if (isOK) {
2033 fCurrentSlice=slice;
2034 fClustersCs = fClusters10[fCurrentSlice];
2035 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
2036 fYcs = fY10[fCurrentSlice];
2037 fZcs = fZ10[fCurrentSlice];
2038 fNcs = fN10[fCurrentSlice];
2039 }
2040 }
2041 //
2042 //is in 5 slice?
2043 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
2044 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
2045 if (slice<0) slice=0;
2046 if (slice>5) slice=5;
2047 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 2048 if (isOK) {
e43c066c 2049 fCurrentSlice=slice;
2050 fClustersCs = fClusters5[fCurrentSlice];
2051 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
2052 fYcs = fY5[fCurrentSlice];
2053 fZcs = fZ5[fCurrentSlice];
2054 fNcs = fN5[fCurrentSlice];
2055 }
2056 }
628e7bb0 2057 //
d9ead1a0 2058 fI = FindClusterIndex(fZmin);
2059 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
2060 fSkip = 0;
2061 fAccepted = 0;
6518a6c5 2062
2063 return;
e43c066c 2064}
44347160 2065//------------------------------------------------------------------------
628e7bb0 2066Int_t AliITStrackerMI::AliITSlayer::
2067FindDetectorIndex(Double_t phi, Double_t z) const {
2068 //--------------------------------------------------------------------
2069 //This function finds the detector crossed by the track
2070 //--------------------------------------------------------------------
31fb8575 2071 Double_t dphi;
2072 if (fZOffset<0) // old geometry
2073 dphi = -(phi-fPhiOffset);
2074 else // new geometry
2075 dphi = phi-fPhiOffset;
2076
6518a6c5 2077
628e7bb0 2078 if (dphi < 0) dphi += 2*TMath::Pi();
2079 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
2080 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
2081 if (np>=fNladders) np-=fNladders;
2082 if (np<0) np+=fNladders;
2083
6518a6c5 2084
628e7bb0 2085 Double_t dz=fZOffset-z;
6518a6c5 2086 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
2087 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 2088 if (nz>=fNdetectors || nz<0) {
2089 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2090 return -1;
2091 }
628e7bb0 2092
23197852 2093 // ad hoc correction for 3rd ladder of SDD inner layer,
2094 // which is reversed (rotated by pi around local y)
2095 // this correction is OK only from AliITSv11Hybrid onwards
2096 if (GetR()>12. && GetR()<20.) { // SDD inner
2097 if(np==2) { // 3rd ladder
6801b453 2098 Double_t posMod252[3];
2099 AliITSgeomTGeo::GetTranslation(252,posMod252);
2100 // check the Z coordinate of Mod 252: if negative
2101 // (old SDD geometry in AliITSv11Hybrid)
2102 // the swap of numeration whould be applied
2103 if(posMod252[2]<0.){
2104 nz = (fNdetectors-1) - nz;
2105 }
2106 }
23197852 2107 }
2108 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
2109
2110
628e7bb0 2111 return np*fNdetectors + nz;
2112}
44347160 2113//------------------------------------------------------------------------
ae00569a 2114const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
2115{
e43c066c 2116 //--------------------------------------------------------------------
2117 // This function returns clusters within the "window"
2118 //--------------------------------------------------------------------
2119
ae00569a 2120 if (fCurrentSlice<0) {
e43c066c 2121 Double_t rpi2 = 2.*fR*TMath::Pi();
2122 for (Int_t i=fI; i<fImax; i++) {
2123 Double_t y = fY[i];
d9ead1a0 2124 Double_t z = fZ[i];
e43c066c 2125 if (fYmax<y) y -= rpi2;
1d4090b7 2126 if (fYmin>y) y += rpi2;
e43c066c 2127 if (y<fYmin) continue;
2128 if (y>fYmax) continue;
d9ead1a0 2129 // AD
2130 // skip clusters that are in "extended" road but they
2131 // 3sigma error does not touch the original road
2132 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
2133 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
2134 //
88e3c173 2135 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2136 ci=i;
ae00569a 2137 if (!test) fI=i+1;
e43c066c 2138 return fClusters[i];
2139 }
ae00569a 2140 } else {
e43c066c 2141 for (Int_t i=fI; i<fImax; i++) {
2142 if (fYcs[i]<fYmin) continue;
2143 if (fYcs[i]>fYmax) continue;
88e3c173 2144 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 2145 ci=fClusterIndexCs[i];
ae00569a 2146 if (!test) fI=i+1;
e43c066c 2147 return fClustersCs[i];
2148 }
2149 }
2150 return 0;
2151}
44347160 2152//------------------------------------------------------------------------
e43c066c 2153Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
2154const {
2155 //--------------------------------------------------------------------
afd25725 2156 // This function returns the layer thickness at this point (units X0)
e43c066c 2157 //--------------------------------------------------------------------
2158 Double_t d=0.0085;
e50912db 2159 x0=AliITSRecoParam::GetX0Air();
e43c066c 2160 if (43<fR&&fR<45) { //SSD2
2161 Double_t dd=0.0034;
2162 d=dd;
2163 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2164 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2165 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2166 for (Int_t i=0; i<12; i++) {
2167 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2168 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2169 d+=0.0034;
2170 break;
2171 }
2172 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2173 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2174 d+=0.0034;
2175 break;
2176 }
2177 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2178 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2179 }
2180 } else
2181 if (37<fR&&fR<41) { //SSD1
2182 Double_t dd=0.0034;
2183 d=dd;
2184 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2185 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2186 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2187 for (Int_t i=0; i<11; i++) {
2188 if (TMath::Abs(z-3.9*i)<0.15) {
2189 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2190 d+=dd;
2191 break;
2192 }
2193 if (TMath::Abs(z+3.9*i)<0.15) {
2194 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2195 d+=dd;
2196 break;
2197 }
2198 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2199 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2200 }
2201 } else
2202 if (13<fR&&fR<26) { //SDD
2203 Double_t dd=0.0033;
2204 d=dd;
2205 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2206
2207 if (TMath::Abs(y-1.80)<0.55) {
2208 d+=0.016;
2209 for (Int_t j=0; j<20; j++) {
2210 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2211 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2212 }
2213 }
2214 if (TMath::Abs(y+1.80)<0.55) {
2215 d+=0.016;
2216 for (Int_t j=0; j<20; j++) {
2217 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2218 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2219 }
2220 }
2221
2222 for (Int_t i=0; i<4; i++) {
2223 if (TMath::Abs(z-7.3*i)<0.60) {
2224 d+=dd;
2225 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2226 break;
2227 }
2228 if (TMath::Abs(z+7.3*i)<0.60) {
2229 d+=dd;
2230 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2231 break;
2232 }
2233 }
2234 } else
2235 if (6<fR&&fR<8) { //SPD2
2236 Double_t dd=0.0063; x0=21.5;
2237 d=dd;
2238 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2239 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2240 } else
2241 if (3<fR&&fR<5) { //SPD1
2242 Double_t dd=0.0063; x0=21.5;
2243 d=dd;
2244 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2245 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2246 }
2247
2248 return d;
2249}
44347160 2250//------------------------------------------------------------------------
23197852 2251AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2252fR(det.fR),
1c97ce2f 2253fRmisal(det.fRmisal),
23197852 2254fPhi(det.fPhi),
2255fSinPhi(det.fSinPhi),
2256fCosPhi(det.fCosPhi),
2257fYmin(det.fYmin),
2258fYmax(det.fYmax),
2259fZmin(det.fZmin),
2260fZmax(det.fZmax),
2261fIsBad(det.fIsBad),
2262fNChips(det.fNChips),
2263fChipIsBad(det.fChipIsBad)
2264{
2265 //Copy constructor
2266}
2267//------------------------------------------------------------------------
2268void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2269 const AliITSDetTypeRec *detTypeRec)
23197852 2270{
2271 //--------------------------------------------------------------------
2272 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2273 //--------------------------------------------------------------------
2274
2275 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2276 // while in the tracker they start from 0 for each layer
2277 for(Int_t il=0; il<ilayer; il++)
2278 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2279
2280 Int_t detType;
2281 if (ilayer==0 || ilayer==1) { // ---------- SPD
2282 detType = 0;
2283 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2284 detType = 1;
2285 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2286 detType = 2;
2287 } else {
2288 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2289 return;
2290 }
2291
2292 // Get calibration from AliITSDetTypeRec
2293 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2294 calib->SetModuleIndex(idet);
23197852 2295 AliITSCalibration *calibSPDdead = 0;
2296 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2297 if (calib->IsBad() ||
2298 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2299 {
2300 SetBad();
359ac74d 2301 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2302 }
2303
2304 // Get segmentation from AliITSDetTypeRec
2305 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2306
2307 // Read info about bad chips
2308 fNChips = segm->GetMaximumChipIndex()+1;
2309 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2310 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2311 fChipIsBad = new Bool_t[fNChips];
2312 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2313 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2314 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2315 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2316 }
2317
2318 return;
2319}
2320//------------------------------------------------------------------------
e50912db 2321Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2322{
2323 //--------------------------------------------------------------------
afd25725 2324 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2325 //--------------------------------------------------------------------
e43c066c 2326
e50912db 2327 if(fUseTGeo!=0) {
2328 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2329 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2330 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2331 }
2332
afd25725 2333 // beam pipe
e50912db 2334 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2335 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2336
2337 // layers
2338 Double_t x0=0;
e43c066c 2339 Double_t xn=fgLayers[fI].GetR();
2340 for (Int_t i=0; i<fI; i++) {
2341 Double_t xi=fgLayers[i].GetR();
e50912db 2342 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2343 d+=dLayer*xi*xi;
e43c066c 2344 }
2345
afd25725 2346 // shields
e43c066c 2347 if (fI>1) {
e50912db 2348 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2349 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2350 }
e43c066c 2351 if (fI>3) {
e50912db 2352 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2353 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2354 }
e43c066c 2355 return d/(xn*xn);
2356}
a4354152 2357
2358//------------------------------------------------------------------------
2359Int_t AliITStrackerMI::GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS)
2360{
2361 //--------------------------------------------------------------------
2362 // Returns the array of layers between the current layer and the vertex
2363 //--------------------------------------------------------------------
2364 //
2365 if(fUseTGeo!=0) {
2366 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2367 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2368 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2369 }
2370
2371 int nl = 0;
2372 double x0 = 0;
2373 for (int il=fI;il--;) {
2374 //
2375 if (il==3) {
2376 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2377 xMS[nl++] = AliITSRecoParam::GetrInsideShield(1);
2378 }
2379 else if (il==1) {
2380 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2381 xMS[nl++] = AliITSRecoParam::GetrInsideShield(0);
2382 }
2383 //
2384 x2x0MS[nl] = (fUseTGeo==0 ? fgLayers[il].GetThickness(0,0,x0) : fxOverX0Layer[il]);
2385 xMS[nl++] = fgLayers[il].GetR();
2386 //
2387 }
2388 //
2389 // beam pipe
2390 x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2391 xMS[nl++] = AliITSRecoParam::GetrPipe();
2392 //
2393 return nl;
2394}
2395
2396
44347160 2397//------------------------------------------------------------------------
e43c066c 2398Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2399 //-------------------------------------------------------------------
e43c066c 2400 // This function returns number of clusters within the "window"
2401 //--------------------------------------------------------------------
2402 Int_t ncl=0;
2403 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2404 const AliITSRecPoint *c=fClusters[i];
e43c066c 2405 if (c->GetZ() > fZmax) break;
2406 if (c->IsUsed()) continue;
2407 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2408 Double_t y=fR*det.GetPhi() + c->GetY();
2409
2410 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2411 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2412
2413 if (y<fYmin) continue;
2414 if (y>fYmax) continue;
2415 ncl++;
2416 }
2417 return ncl;
2418}
44347160 2419//------------------------------------------------------------------------
ae00569a 2420Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2421 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2422{
e43c066c 2423 //--------------------------------------------------------------------
ae00569a 2424 // This function refits the track "track" at the position "x" using
2425 // the clusters from "clusters"
ef7253ac 2426 // If "extra"==kTRUE,
ae00569a 2427 // the clusters from overlapped modules get attached to "track"
7167ae53 2428 // If "planeff"==kTRUE,
2429 // special approach for plane efficiency evaluation is applyed
e43c066c 2430 //--------------------------------------------------------------------
6518a6c5 2431
e50912db 2432 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2433 Int_t k;
e50912db 2434 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2435 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2436 for (k=0; k<nc; k++) {
ae00569a 2437 Int_t idx=clusters->GetClusterIndex(k);
2438 Int_t ilayer=(idx&0xf0000000)>>28;
2439 index[ilayer]=idx;
e43c066c 2440 }
67c1e979 2441
7167ae53 2442 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2443}
44347160 2444//------------------------------------------------------------------------
ae00569a 2445Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2446 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2447{
67c1e979 2448 //--------------------------------------------------------------------
ae00569a 2449 // This function refits the track "track" at the position "x" using
67c1e979 2450 // the clusters from array
ae00569a 2451 // If "extra"==kTRUE,
2452 // the clusters from overlapped modules get attached to "track"
7167ae53 2453 // If "planeff"==kTRUE,
2454 // special approach for plane efficiency evaluation is applyed
67c1e979 2455 //--------------------------------------------------------------------
e50912db 2456 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2457 Int_t k;
e50912db 2458 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2459 //
e50912db 2460 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2461 index[k]=clusters[k];
67c1e979 2462 }
2463
74008278 2464 // special for cosmics and TPC prolonged tracks:
269709f8 2465 // propagate to the innermost of:
2466 // - innermost layer crossed by the track
2467 // - innermost layer where a cluster was associated to the track
74008278 2468 static AliITSRecoParam *repa = NULL;
2469 if(!repa){
2470 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2471 if(!repa){
2472 repa = AliITSRecoParam::GetHighFluxParam();
2473 AliWarning("Using default AliITSRecoParam class");
2474 }
2475 }
2476 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2477 ULong_t trStatus=0;
2478 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2479 Int_t innermostlayer=0;
15f91fcd 2480 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2481 innermostlayer=5;
2482 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2483 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2484 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2485 index[innermostlayer] >= 0 ) break;
74008278 2486 }
269709f8 2487
74008278 2488 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2489 }
afd25725 2490
ae00569a 2491 Int_t modstatus=1; // found
2492 Float_t xloc,zloc;
67c1e979 2493 Int_t from, to, step;
ae00569a 2494 if (xx > track->GetX()) {
e50912db 2495 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2496 step=+1;
2497 } else {
e50912db 2498 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2499 step=-1;
2500 }
ae00569a 2501 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2502
ae00569a 2503 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2504 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2505 Double_t r=layer.GetR();
4fa7f7d1 2506
afd25725 2507 if (step<0 && xx>r) break;
2508
2509 // material between SSD and SDD, SDD and SPD
6518a6c5 2510 Double_t hI=ilayer-0.5*step;
e50912db 2511 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2512 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2513 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2514 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2515
ae00569a 2516
afd25725 2517 Double_t oldGlobXYZ[3];
d1181f10 2518 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2519
67178f34 2520 // continue if we are already beyond this layer
2521 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2522 if(step>0 && oldGlobR > r) continue; // going outward
2523 if(step<0 && oldGlobR < r) continue; // going inward
2524
8602c008 2525 Double_t phi,z;
ae00569a 2526 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2527
67c1e979 2528 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2529
2530 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2531 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2532 if (skip==2) {
ae00569a 2533 modstatus = 4; // out in z
d1181f10 2534 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2535 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2536 }
7131593b 2537 // cross layer
2538 // apply correction for material of the current layer
2539 // add time if going outward
2540 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2541 continue;
2542 }
2543
e50912db 2544 if (idet<0) return kFALSE;
ae00569a 2545
4fa7f7d1 2546
67c1e979 2547 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2548 // only for ITS-SA tracks refit
2549 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2550 //
1c97ce2f 2551 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2552
ae00569a 2553 track->SetDetectorIndex(idet);
d1181f10 2554 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2555
23197852 2556 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2557
2558 const AliITSRecPoint *clAcc=0;
44347160 2559 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2560
6518a6c5 2561 Int_t idx=index[ilayer];
ae00569a 2562 if (idx>=0) { // cluster in this layer
2563 modstatus = 6; // no refit
2564 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2565 if (cl) {
2566 if (idet != cl->GetDetectorIndex()) {
2567 idet=cl->GetDetectorIndex();
a5d0fae6 2568 const AliITSdetector &detc=layer.GetDetector(idet);
2569 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2570 track->SetDetectorIndex(idet);
d1181f10 2571 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2572 }
ae00569a 2573 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2574 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2575 if (chi2<maxchi2) {
2576 clAcc=cl;
2577 maxchi2=chi2;
2578 modstatus = 1; // found
2579 } else {
7167ae53 2580 return kFALSE; //
ae00569a 2581 }
2582 }
2583 } else { // no cluster in this layer
2584 if (skip==1) {
2585 modstatus = 3; // skipped
0ed58a47 2586 // Plane Eff determination:
2587 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2588 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2589 UseTrackForPlaneEff(track,ilayer);
7167ae53 2590 }
ae00569a 2591 } else {
2592 modstatus = 5; // no cls in road
2593 // check dead
1c97ce2f 2594 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2595 dz = 0.5*(zmax-zmin);
2596 dy = 0.5*(ymax-ymin);
2597 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2598 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2599 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2600 }
e43c066c 2601 }
ae00569a 2602
2603 if (clAcc) {
2604 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2605 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2606 }
ae00569a 2607 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2608
2609
ef3508c5 2610 if (extra && clAcc) { // search for extra clusters in overlapped modules
ae00569a 2611 AliITStrackV2 tmp(*track);
1c97ce2f 2612 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2613 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2614
2615 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2616 Int_t idetExtra=-1;
a5d0fae6 2617 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2618 Double_t tolerance=0.1;
ae00569a 2619 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2620 // only clusters in another module! (overlaps)
2621 idetExtra = clExtra->GetDetectorIndex();
2622 if (idet == idetExtra) continue;
2623
a5d0fae6 2624 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2625
1c97ce2f 2626 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2627 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2628 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2629 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2630
2631 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2632 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2633 }
2634 if (cci>=0) {
2635 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2636 track->SetExtraModule(ilayer,idetExtra);
2637 }
2638 } // end search for extra clusters in overlapped modules
1c97ce2f 2639
afd25725 2640 // Correct for material of the current layer
7131593b 2641 // cross material
2642 // add time if going outward
ae00569a 2643 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2644 track->SetCheckInvariant(kTRUE);
ae00569a 2645 } // end loop on layers
2646
db355ee7 2647 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2648
e43c066c 2649 return kTRUE;
2650}
44347160 2651//------------------------------------------------------------------------
15dd636f 2652Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2653{
2654 //
2655 // calculate normalized chi2
2656 // return NormalizedChi2(track,0);
2657 Float_t chi2 = 0;
2658 Float_t sum=0;
2659 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2660 // track->fdEdxMismatch=0;
2661 Float_t dedxmismatch =0;
2662 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2663 if (mode<100){
2664 for (Int_t i = 0;i<6;i++){
9fd412a8 2665 if (track->GetClIndex(i)>=0){
e43c066c 2666 Float_t cerry, cerrz;
2667 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2668 else
b9671574 2669 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2670 cerry*=cerry;
2671 cerrz*=cerrz;
b9671574 2672 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2673 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2674 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2675 if (ratio<0.5) {
2676 cchi2+=(0.5-ratio)*10.;
2677 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2678 dedxmismatch+=(0.5-ratio)*10.;
2679 }
2680 }
2681 if (i<2 ||i>3){
b9671574 2682 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2683 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2684 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2685 if (i<2) chi2+=2*cl->GetDeltaProbability();
2686 }
2687 chi2+=cchi2;
2688 sum++;
2689 }
2690 }
b9671574 2691 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2692 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2693 }
2694 }
2695 else{
2696 for (Int_t i = 0;i<4;i++){
9fd412a8 2697 if (track->GetClIndex(i)>=0){
e43c066c 2698 Float_t cerry, cerrz;
2699 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2700 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2701 cerry*=cerry;
2702 cerrz*=cerrz;
b9671574 2703 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2704 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2705 sum++;
2706 }
2707 }
2708 for (Int_t i = 4;i<6;i++){
9fd412a8 2709 if (track->GetClIndex(i)>=0){
e43c066c 2710 Float_t cerry, cerrz;
2711 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2712 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2713 cerry*=cerry;
2714 cerrz*=cerrz;
2715 Float_t cerryb, cerrzb;
2716 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2717 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2718 cerryb*=cerryb;
2719 cerrzb*=cerrzb;
b9671574 2720 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2721 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2722 sum++;
2723 }
2724 }
2725 }
b9671574 2726 if (track->GetESDtrack()->GetTPCsignal()>85){
2727 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2728 if (ratio<0.5) {
2729 chi2+=(0.5-ratio)*5.;
2730 }
2731 if (ratio>2){
2732 chi2+=(ratio-2.0)*3;
2733 }
2734 }
2735 //
b9671574 2736 Double_t match = TMath::Sqrt(track->GetChi22());
2737 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2738 if (!track->GetConstrain()) {
2739 if (track->GetNumberOfClusters()>2) {
2740 match/=track->GetNumberOfClusters()-2.;
2741 } else {
2742 match=0;
2743 }
2744 }
e43c066c 2745 if (match<0) match=0;
f8720bda 2746
2747 // penalty factor for missing points (NDeadZone>0), but no penalty
2748 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2749 // or there is a dead from OCDB)
2750 Float_t deadzonefactor = 0.;
2751 if (track->GetNDeadZone()>0.) {
bf1cd124 2752 Int_t sumDeadZoneProbability=0;
2753 for(Int_t ilay=0;ilay<6;ilay++) {
2754 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2755 }
2756 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2757 if(nDeadZoneWithProbNot1>0) {
2758 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2759 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2760 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2761 Float_t one = 1.;
2762 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2763 deadzonefactor = 3.*(1.1-deadZoneProbability);
2764 }
2765 }
2766
b9671574 2767 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2768 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2769 1./(1.+track->GetNSkipped()));
a5a317a9 2770 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2771 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2772 return normchi2;
e43c066c 2773}
44347160 2774//------------------------------------------------------------------------
a70ed6ad 2775Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2776{
2777 //
2778 // return matching chi2 between two tracks
d1181f10 2779 Double_t largeChi2=1000.;
2780
15dd636f 2781 AliITStrackMI track3(*track2);
d1181f10 2782 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2783 TMatrixD vec(5,1);
6c94f330 2784 vec(0,0)=track1->GetY() - track3.GetY();
2785 vec(1,0)=track1->GetZ() - track3.GetZ();
2786 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2787 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2788 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2789 //
2790 TMatrixD cov(5,5);
6c94f330 2791 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2792 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2793 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2794 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2795 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2796
6c94f330 2797 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2798 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2799 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2800 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2801 //
6c94f330 2802 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2803 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2804 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2805 //
6c94f330 2806 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2807 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2808 //
6c94f330 2809 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2810
2811 cov.Invert();
2812 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2813 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2814 return chi2(0,0);
2815}
44347160 2816//------------------------------------------------------------------------
a70ed6ad 2817Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2818{
2819 //
afd25725 2820 // return probability that given point (characterized by z position and error)
2821 // is in SPD dead zone
bf1cd124 2822 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2823 //
afd25725 2824 Double_t probability = 0.;
bf1cd124 2825 Double_t nearestz = 0.,distz=0.;
2826 Int_t nearestzone = -1;
2827 Double_t mindistz = 1000.;
2828
2829 // find closest dead zone
2830 for (Int_t i=0; i<3; i++) {
2831 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2832 if (distz<mindistz) {
2833 nearestzone=i;
2834 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2835 mindistz=distz;
2836 }
2837 }
2838
2839 // too far from dead zone
2840 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2841
2842
afd25725 2843 Double_t zmin, zmax;
bf1cd124 2844 if (nearestzone==0) { // dead zone at z = -7
e50912db 2845 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2846 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2847 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2848 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2849 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2850 } else if (nearestzone==2) { // dead zone at z = +7
2851 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2852 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2853 } else {
2854 zmin = 0.;
2855 zmax = 0.;
e43c066c 2856 }
afd25725 2857 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2858 // dead zone)
bb7e41dd 2859 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2860 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2861 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2862 return probability;
2863}
44347160 2864//------------------------------------------------------------------------
a70ed6ad 2865Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2866{
2867 //
2868 // calculate normalized chi2
2869 Float_t chi2[6];
2870 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2871 Float_t ncl = 0;
2872 for (Int_t i = 0;i<6;i++){
b9671574 2873 if (TMath::Abs(track->GetDy(i))>0){
2874 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2875 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2876 ncl++;
2877 }
2878 else{chi2[i]=10000;}
2879 }
2880 Int_t index[6];
2881 TMath::Sort(6,chi2,index,kFALSE);
2882 Float_t max = float(ncl)*fac-1.;
2883 Float_t sumchi=0, sumweight=0;
2884 for (Int_t i=0;i<max+1;i++){
2885 Float_t weight = (i<max)?1.:(max+1.-i);
2886 sumchi+=weight*chi2[index[i]];
2887 sumweight+=weight;
2888 }
2889 Double_t normchi2 = sumchi/sumweight;
2890 return normchi2;
2891}
44347160 2892//------------------------------------------------------------------------
a70ed6ad 2893Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2894{
2895 //
2896 // calculate normalized chi2
2897 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2898 Int_t npoints = 0;
2899 Double_t res =0;
2900 for (Int_t i=0;i<6;i++){
b9671574 2901 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2902 Double_t sy1 = forwardtrack->GetSigmaY(i);
2903 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2904 Double_t sy2 = backtrack->GetSigmaY(i);
2905 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2906 if (i<2){ sy2=1000.;sz2=1000;}
2907 //
b9671574 2908 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2909 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2910 //
2911 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2912 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2913 //
2914 res+= nz0*nz0+ny0*ny0;
2915 npoints++;
2916 }
2917 if (npoints>1) return
6c23ffed 2918 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2919 //2*forwardtrack->fNUsed+
b9671574 2920 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2921 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2922 return 1000;
2923}
44347160 2924//------------------------------------------------------------------------
e43c066c 2925Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2926 //--------------------------------------------------------------------
2927 // Return pointer to a given cluster
2928 //--------------------------------------------------------------------
2929 Int_t l=(index & 0xf0000000) >> 28;
2930 Int_t c=(index & 0x0fffffff) >> 00;
2931 return fgLayers[l].GetWeight(c);
2932}
44347160 2933//------------------------------------------------------------------------
a70ed6ad 2934void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2935{
2936 //---------------------------------------------
2937 // register track to the list
628e7bb0 2938 //
b9671574 2939 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2940 //
2941 //
e43c066c 2942 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2943 Int_t index = track->GetClusterIndex(icluster);
2944 Int_t l=(index & 0xf0000000) >> 28;
2945 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2946 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2947 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2948 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2949 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2950 break;
2951 }
2952 }
2953 }
2954}
44347160 2955//------------------------------------------------------------------------
a70ed6ad 2956void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2957{
2958 //---------------------------------------------
2959 // unregister track from the list
2960 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2961 Int_t index = track->GetClusterIndex(icluster);
2962 Int_t l=(index & 0xf0000000) >> 28;
2963 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2964 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2965 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2966 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2967 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2968 }
2969 }
2970 }
2971}
44347160 2972//------------------------------------------------------------------------
00a7cc50 2973Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2974{
2975 //-------------------------------------------------------------
2976 //get number of shared clusters
2977 //-------------------------------------------------------------
2978 Float_t shared=0;
2979 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2980 // mean number of clusters
2981 Float_t *ny = GetNy(id), *nz = GetNz(id);
2982
2983
2984 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2985 Int_t index = track->GetClusterIndex(icluster);
2986 Int_t l=(index & 0xf0000000) >> 28;
2987 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2988 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 2989 // if (ny[l]<1.e-13){
2990 // printf("problem\n");
2991 // }
00a7cc50 2992 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2993 Float_t weight=1;
2994 //
2995 Float_t deltan = 0;
2996 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2997 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2998 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2999 if (l<2 || l>3){
3000 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3001 }
3002 else{
3003 deltan = (cl->GetNz()-nz[l]);
3004 }
3005 if (deltan>2.0) continue; // extended - highly probable shared cluster
3006 weight = 2./TMath::Max(3.+deltan,2.);
3007 //
3008 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 3009 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 3010 list[l]=index;
00a7cc50 3011 clist[l] = (AliITSRecPoint*)GetCluster(index);
25015f7a 3012 track->SetSharedWeight(l,weight);
e43c066c 3013 shared+=weight;
3014 break;
3015 }
3016 }
3017 }
b9671574 3018 track->SetNUsed(shared);
e43c066c 3019 return shared;
3020}
44347160 3021//------------------------------------------------------------------------
a70ed6ad 3022Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 3023{
3024 //
3025 // find first shared track
3026 //
3027 // mean number of clusters
3028 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
3029 //
3030 for (Int_t i=0;i<6;i++) overlist[i]=-1;
3031 Int_t sharedtrack=100000;
3032 Int_t tracks[24],trackindex=0;
3033 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
3034 //
3035 for (Int_t icluster=0;icluster<6;icluster++){
3036 if (clusterlist[icluster]<0) continue;
3037 Int_t index = clusterlist[icluster];
3038 Int_t l=(index & 0xf0000000) >> 28;
3039 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 3040 // if (ny[l]<1.e-13){
3041 // printf("problem\n");
3042 // }
b9671574 3043 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 3044 //if (l>3) continue;
00a7cc50 3045 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3046 //
3047 Float_t deltan = 0;
3048 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 3049 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
3050 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 3051 if (l<2 || l>3){
3052 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
3053 }
3054 else{
3055 deltan = (cl->GetNz()-nz[l]);
3056 }
3057 if (deltan>2.0) continue; // extended - highly probable shared cluster
3058 //
3059 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3060 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3061 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
3062 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 3063 trackindex++;
3064 }
3065 }
3066 }
3067 if (trackindex==0) return -1;
3068 if (trackindex==1){
3069 sharedtrack = tracks[0];
3070 }else{
3071 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
3072 else{
3073 //
a5d0fae6 3074 Int_t tracks2[24], cluster[24];
3075 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 3076 Int_t index =0;
3077 //
3078 for (Int_t i=0;i<trackindex;i++){
3079 if (tracks[i]<0) continue;
a5d0fae6 3080 tracks2[index] = tracks[i];
e43c066c 3081 cluster[index]++;
3082 for (Int_t j=i+1;j<trackindex;j++){
3083 if (tracks[j]<0) continue;
3084 if (tracks[j]==tracks[i]){
3085 cluster[index]++;
3086 tracks[j]=-1;
3087 }
3088 }
3089 index++;
3090 }
3091 Int_t max=0;
3092 for (Int_t i=0;i<index;i++){
3093 if (cluster[index]>max) {
a5d0fae6 3094 sharedtrack=tracks2[index];
e43c066c 3095 max=cluster[index];
3096 }
3097 }
3098 }
3099 }
3100
3101 if (sharedtrack>=100000) return -1;
3102 //
3103 // make list of overlaps
3104 shared =0;
3105 for (Int_t icluster=0;icluster<6;icluster++){
3106 if (clusterlist[icluster]<0) continue;
3107 Int_t index = clusterlist[icluster];
3108 Int_t l=(index & 0xf0000000) >> 28;
3109 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 3110 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 3111 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 3112 if (l==0 || l==1){
3113 if (cl->GetNy()>2) continue;
3114 if (cl->GetNz()>2) continue;
3115 }
3116 if (l==4 || l==5){
3117 if (cl->GetNy()>3) continue;
3118 if (cl->GetNz()>3) continue;
3119 }
3120 //
3121 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 3122 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
3123 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 3124 overlist[l]=index;
3125 shared++;
3126 }
3127 }
3128 }
3129 return sharedtrack;
3130}
44347160 3131//------------------------------------------------------------------------
04315dad 3132AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1,AliITStrackMI* original){
e43c066c 3133 //
3134 // try to find track hypothesys without conflicts
3135 // with minimal chi2;
3136 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
3137 Int_t entries1 = arr1->GetEntriesFast();
3138 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 3139 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3140 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 3141 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 3142 //
15dd636f 3143 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
3144 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 3145 if (track10->Pt()>0.5+track20->Pt()) return track10;
a4354152 3146 //
e43c066c 3147 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3148 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3149 UnRegisterClusterTracks(track,trackID1);
3150 }
3151 //
3152 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3153 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3154 UnRegisterClusterTracks(track,trackID2);
3155 }
3156 Int_t index1=0;
3157 Int_t index2=0;
3158 Float_t maxconflicts=6;
3159 Double_t maxchi2 =1000.;
3160 //
3161 // get weight of hypothesys - using best hypothesy
3162 Double_t w1,w2;
3163
3164 Int_t list1[6],list2[6];
00a7cc50 3165 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 3166 RegisterClusterTracks(track10,trackID1);
3167 RegisterClusterTracks(track20,trackID2);
3168 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
3169 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
3170 UnRegisterClusterTracks(track10,trackID1);
3171 UnRegisterClusterTracks(track20,trackID2);
3172 //
3173 // normalized chi2
3174 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
3175 Float_t nerry[6],nerrz[6];
3176 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
3177 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
3178 for (Int_t i=0;i<6;i++){
3179 if ( (erry1[i]>0) && (erry2[i]>0)) {
3180 nerry[i] = TMath::Min(erry1[i],erry2[i]);
3181 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
3182 }else{
3183 nerry[i] = TMath::Max(erry1[i],erry2[i]);
3184 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
3185 }
b9671574 3186 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
3187 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
3188 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3189 ncl1++;
3190 }
b9671574 3191 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
3192 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
3193 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 3194 ncl2++;
3195 }
3196 }
3197 chi21/=ncl1;
3198 chi22/=ncl2;
3199 //
3200 //
b9671574 3201 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
3202 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 3203 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
3204 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
3205 //
3206 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3207 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 3208 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3209 );
3210 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3211 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 3212 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3213 );
3214
3215 Double_t sumw = w1+w2;
3216 w1/=sumw;
3217 w2/=sumw;
3218 if (w1<w2*0.5) {
3219 w1 = (d2+0.5)/(d1+d2+1.);
3220 w2 = (d1+0.5)/(d1+d2+1.);
3221 }
3222 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3223 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3224 //
3225 // get pair of "best" hypothesys
3226 //
3227 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3228 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3229
3230 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3231 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3232 //if (track1->fFakeRatio>0) continue;
3233 RegisterClusterTracks(track1,trackID1);
3234 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3235 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3236
3237 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3238 //if (track2->fFakeRatio>0) continue;
3239 Float_t nskipped=0;
3240 RegisterClusterTracks(track2,trackID2);
e43c066c 3241 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3242 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3243 UnRegisterClusterTracks(track2,trackID2);
3244 //
b9671574 3245 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3246 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3247 if (nskipped>0.5) continue;
3248 //
3249 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3250 if (conflict1+1<cconflict1) continue;
3251 if (conflict2+1<cconflict2) continue;
3252 Float_t conflict=0;
3253 Float_t sumchi2=0;
3254 Float_t sum=0;
3255 for (Int_t i=0;i<6;i++){
3256 //
3257 Float_t c1 =0.; // conflict coeficients
3258 Float_t c2 =0.;
3259 if (clist1[i]&&clist2[i]){
3260 Float_t deltan = 0;
3261 if (i<2 || i>3){
3262 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3263 }
3264 else{
3265 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3266 }
3267 c1 = 2./TMath::Max(3.+deltan,2.);
3268 c2 = 2./TMath::Max(3.+deltan,2.);
3269 }
3270 else{
3271 if (clist1[i]){
3272 Float_t deltan = 0;
3273 if (i<2 || i>3){
3274 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3275 }
3276 else{
3277 deltan = (clist1[i]->GetNz()-nz1[i]);
3278 }
3279 c1 = 2./TMath::Max(3.+deltan,2.);
3280 c2 = 0;
3281 }
3282
3283 if (clist2[i]){
3284 Float_t deltan = 0;
3285 if (i<2 || i>3){
3286 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3287 }
3288 else{
3289 deltan = (clist2[i]->GetNz()-nz2[i]);
3290 }
3291 c2 = 2./TMath::Max(3.+deltan,2.);
3292 c1 = 0;
3293 }
3294 }
3295 //
a5d0fae6 3296 chi21=0;chi22=0;
b9671574 3297 if (TMath::Abs(track1->GetDy(i))>0.) {
3298 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3299 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3300 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3301 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3302 }else{
b9671574 3303 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3304 }
3305 //
b9671574 3306 if (TMath::Abs(track2->GetDy(i))>0.) {
3307 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3308 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3309 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3310 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3311 }
3312 else{
b9671574 3313 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3314 }
3315 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3316 if (chi21>0) sum+=w1;
3317 if (chi22>0) sum+=w2;
3318 conflict+=(c1+c2);
3319 }
b9671574 3320 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3321 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3322 Double_t normchi2 = 2*conflict+sumchi2/sum;
3323 if ( normchi2 <maxchi2 ){
3324 index1 = itrack1;
3325 index2 = itrack2;
3326 maxconflicts = conflict;
3327 maxchi2 = normchi2;
3328 }
3329 }
3330 UnRegisterClusterTracks(track1,trackID1);
3331 }
3332 //
3333 // if (maxconflicts<4 && maxchi2<th0){
3334 if (maxchi2<th0*2.){
b9671574 3335 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3336 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3337 track1->SetChi2MIP(5,maxconflicts);
3338 track1->SetChi2MIP(6,maxchi2);
3339 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3340 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3341 track1->SetChi2MIP(8,index1);
e43c066c 3342 fBestTrackIndex[trackID1] =index1;
3343 UpdateESDtrack(track1, AliESDtrack::kITSin);
04315dad 3344 original->SetWinner(track1);
e43c066c 3345 }
b9671574 3346 else if (track10->GetChi2MIP(0)<th1){
3347 track10->SetChi2MIP(5,maxconflicts);
3348 track10->SetChi2MIP(6,maxchi2);
e43c066c 3349 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3350 UpdateESDtrack(track10,AliESDtrack::kITSin);
04315dad 3351 original->SetWinner(track10);
e43c066c 3352 }
3353
3354 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3355 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3356 UnRegisterClusterTracks(track,trackID1);
3357 }
3358 //
3359 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3360 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3361 UnRegisterClusterTracks(track,trackID2);
3362 }
3363
44347160 3364 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3365 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3366 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3367 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3368 RegisterClusterTracks(track10,trackID1);
3369 }
44347160 3370 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3371 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3372 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3373 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3374 RegisterClusterTracks(track20,trackID2);
3375 }
04315dad 3376 return track10;
e43c066c 3377
3378}
44347160 3379//------------------------------------------------------------------------
e43c066c 3380void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3381 //--------------------------------------------------------------------
3382 // This function marks clusters assigned to the track
3383 //--------------------------------------------------------------------
3384 AliTracker::UseClusters(t,from);
3385
00a7cc50 3386 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3387 //if (c->GetQ()>2) c->Use();
3388 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3389 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3390 //if (c->GetQ()>2) c->Use();
3391 if (c->GetSigmaZ2()>0.1) c->Use();
3392
3393}
44347160 3394//------------------------------------------------------------------------
15dd636f 3395void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3396{
3397 //------------------------------------------------------------------
3398 // add track to the list of hypothesys
3399 //------------------------------------------------------------------
3400
fddf8459 3401 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3402 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3403 //
3404 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3405 if (!array) {
3406 array = new TObjArray(10);
3407 fTrackHypothesys.AddAt(array,esdindex);
3408 }
3409 array->AddLast(track);
3410}
44347160 3411//------------------------------------------------------------------------
e43c066c 3412void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3413{
3414 //-------------------------------------------------------------------
3415 // compress array of track hypothesys
3416 // keep only maxsize best hypothesys
3417 //-------------------------------------------------------------------
3418 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3419 if (! (fTrackHypothesys.At(esdindex)) ) return;
3420 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3421 Int_t entries = array->GetEntriesFast();
3422 //
3423 //- find preliminary besttrack as a reference
04315dad 3424 Float_t minchi2=10000;
e43c066c 3425 Int_t maxn=0;
15dd636f 3426 AliITStrackMI * besttrack=0;
a4354152 3427 //
e43c066c 3428 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3429 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3430 if (!track) continue;
3431 Float_t chi2 = NormalizedChi2(track,0);
3432 //
b9671574 3433 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3434 track->SetLabel(tpcLabel);
3435 CookdEdx(track);
b9671574 3436 track->SetFakeRatio(1.);
e43c066c 3437 CookLabel(track,0.); //For comparison only
3438 //
44347160 3439 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3440 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3441 if (track->GetNumberOfClusters()<maxn) continue;
3442 maxn = track->GetNumberOfClusters();
a4354152 3443 // if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2 *= track->GetChi2MIP(3); // RS
e43c066c 3444 if (chi2<minchi2){
3445 minchi2=chi2;
3446 besttrack=track;
3447 }
3448 }
3449 else{
b9671574 3450 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3451 delete array->RemoveAt(itrack);
3452 }
e43c066c 3453 }
3454 }
3455 if (!besttrack) return;
3456 //
3457 //
3458 //take errors of best track as a reference
3459 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3460 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3461 for (Int_t j=0;j<6;j++) {
9fd412a8 3462 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3463 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3464 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3465 ny[j] = besttrack->GetNy(j);
3466 nz[j] = besttrack->GetNz(j);
e43c066c 3467 }
3468 }
3469 //
3470 // calculate normalized chi2
3471 //
3472 Float_t * chi2 = new Float_t[entries];
3473 Int_t * index = new Int_t[entries];
04315dad 3474 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3475 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3476 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3477 if (track){
a4354152 3478 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
3479 double chi2t = GetNormalizedChi2(track, mode);
3480 track->SetChi2MIP(0,chi2t);
3481 if (chi2t<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3482 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3483 chi2[itrack] = chi2t;
3484 }
628e7bb0 3485 else{
b9671574 3486 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3487 delete array->RemoveAt(itrack);
3488 }
3489 }
e43c066c 3490 }
3491 }
3492 //
3493 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3494 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3495 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3496 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3497 for (Int_t j=0;j<6;j++){
9fd412a8 3498 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3499 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3500 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3501 ny[j] = besttrack->GetNy(j);
3502 nz[j] = besttrack->GetNz(j);
e43c066c 3503 }
3504 }
3505 }
3506 //
3507 // calculate one more time with updated normalized errors
04315dad 3508 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
e43c066c 3509 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3510 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3511 if (track){
a4354152 3512 double chi2t = GetNormalizedChi2(track, mode);
3513 track->SetChi2MIP(0,chi2t);
bf1cd124 3514 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
a4354152 3515 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
3516 if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
3517 chi2[itrack] = chi2t; //-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3518 }
3519 else {
3520 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3521 delete array->RemoveAt(itrack);
628e7bb0 3522 }
a4354152 3523 }
e43c066c 3524 }
3525 }
3526 entries = array->GetEntriesFast();
3527 //
628e7bb0 3528 //
e43c066c 3529 if (entries>0){
3530 TObjArray * newarray = new TObjArray();
3531 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3532 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3533 if (besttrack){
bf1cd124 3534 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3535 //
a5d0fae6 3536 for (Int_t j=0;j<6;j++){
3537 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3538 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3539 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3540 ny[j] = besttrack->GetNy(j);
3541 nz[j] = besttrack->GetNz(j);
e43c066c 3542 }
3543 }
b9671574 3544 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3545 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3546 Float_t minn = besttrack->GetNumberOfClusters()-3;
3547 Int_t accepted=0;
3548 for (Int_t i=0;i<entries;i++){
15dd636f 3549 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3550 if (!track) continue;
3551 if (accepted>maxcut) break;
b9671574 3552 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3553 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3554 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3555 delete array->RemoveAt(index[i]);
3556 continue;
3557 }
e43c066c 3558 }
b9671574 3559 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3560 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3561 if (!shortbest) accepted++;
e43c066c 3562 //
3563 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3564 for (Int_t j=0;j<6;j++){
3565 if (nz[j]==0){
3566 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3567 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3568 ny[j] = track->GetNy(j);
3569 nz[j] = track->GetNz(j);
e43c066c 3570 }
3571 }
3572 }
3573 else{
3574 delete array->RemoveAt(index[i]);
3575 }
3576 }
3577 array->Delete();
3578 delete fTrackHypothesys.RemoveAt(esdindex);
3579 fTrackHypothesys.AddAt(newarray,esdindex);
3580 }
3581 else{
3582 array->Delete();
3583 delete fTrackHypothesys.RemoveAt(esdindex);
3584 }
3585 }
3586 delete [] chi2;
3587 delete [] index;
3588}
44347160 3589//------------------------------------------------------------------------
15dd636f 3590AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3591{
3592 //-------------------------------------------------------------
3593 // try to find best hypothesy
3594 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
a4354152 3595 // RS: optionally changing this to product of Chi2MIP(0)*Chi2MIP(3) == (chi2*chi2_interpolated)
e43c066c 3596 //-------------------------------------------------------------
3597 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3598 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3599 if (!array) return 0;
3600 Int_t entries = array->GetEntriesFast();
3601 if (!entries) return 0;
04315dad 3602 Float_t minchi2 = 100000;
15dd636f 3603 AliITStrackMI * besttrack=0;
e43c066c 3604 //
15dd636f 3605 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3606 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3607 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3608 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3609 //
3610 for (Int_t i=0;i<entries;i++){
15dd636f 3611 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3612 if (!track) continue;
628e7bb0 3613 Float_t sigmarfi,sigmaz;
3614 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3615 track->SetDnorm(0,sigmarfi);
3616 track->SetDnorm(1,sigmaz);
628e7bb0 3617 //
b9671574 3618 track->SetChi2MIP(1,1000000);
3619 track->SetChi2MIP(2,1000000);
3620 track->SetChi2MIP(3,1000000);
e43c066c 3621 //
3622 // backtrack
15dd636f 3623 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3624 if (track->GetConstrain()) {
e50912db 3625 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
333d86cb 3626 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
a4354152 3627 if (fUseImproveKalman) {if (!backtrack->ImproveKalman(xyzVtx,ersVtx,0,0,0)) continue;}
3628 else {if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;}
333d86cb 3629 }
6c94f330 3630 backtrack->ResetCovariance(10.);
628e7bb0 3631 }else{
6c94f330 3632 backtrack->ResetCovariance(10.);
628e7bb0 3633 }
e43c066c 3634 backtrack->ResetClusters();
628e7bb0 3635
e43c066c 3636 Double_t x = original->GetX();
3637 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3638 //
b9671574 3639 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3640 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3641 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3642 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3643
b9671574 3644 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3645 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3646 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3647
3648
44347160 3649 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3650 //
3651 //forward track - without constraint
15dd636f 3652 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3653 forwardtrack->ResetClusters();
3654 x = track->GetX();
a4354152 3655 if (!RefitAt(x,forwardtrack,track) && fSelectBestMIP03) continue; // w/o fwd track MIP03 is meaningless
b9671574 3656 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3657 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3658 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3659
791f9a2a 3660 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3661 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3662 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3663 forwardtrack->SetD(0,track->GetD(0));
3664 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3665 {
3666 Int_t list[6];
00a7cc50 3667 AliITSRecPoint* clist[6];
b9671574 3668 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3669 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3670 }
3671
b9671574 3672 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3673 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3674 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3675 track->SetChi2MIP(3,1000);
e43c066c 3676 continue;
3677 }
a4354152 3678 Double_t chi2 = track->GetChi2MIP(0); // +track->GetNUsed(); //RS
3679 if (fSelectBestMIP03) chi2 *= track->GetChi2MIP(3);
04315dad 3680 else chi2 += track->GetNUsed();
e43c066c 3681 //
3682 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3683 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3684 }
3685 if (chi2 < minchi2){
15dd636f 3686 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3687 besttrack = track;
e43c066c 3688 besttrack->SetLabel(track->GetLabel());
b9671574 3689 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3690 minchi2 = chi2;
791f9a2a 3691 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3692 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3693 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3694 }
3695 }
3696 delete backtrack;
3697 delete forwardtrack;
9cd19c63 3698
3699 if (!besttrack) return 0;
3700
e43c066c 3701 Int_t accepted=0;
3702 for (Int_t i=0;i<entries;i++){
fddf8459 3703 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3704
e43c066c 3705 if (!track) continue;
628e7bb0 3706
44347160 3707 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
a4354152 3708 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)
3709 // RS: don't apply this cut when fSelectBestMIP03 is on
3710 || (!fSelectBestMIP03 && (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.))
3711 ){
b9671574 3712 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3713 delete array->RemoveAt(i);
3714 continue;
3715 }
e43c066c 3716 }
3717 else{
3718 accepted++;
3719 }
3720 }
3721 //
3722 array->Compress();
3723 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3724
e43c066c 3725 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3726 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3727 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3728 if (!besttrack) return 0;
b9671574 3729 besttrack->SetChi2MIP(8,0);
e43c066c 3730 fBestTrackIndex[esdindex]=0;
3731 entries = array->GetEntriesFast();
15dd636f 3732 AliITStrackMI *longtrack =0;
e43c066c 3733 minchi2 =1000;
b9671574 3734 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3735 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3736 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3737 if (!track->GetConstrain()) continue;
3738 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3739 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3740 if (track->GetChi2MIP(0)>4.) continue;
3741 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3742 longtrack =track;
3743 }
3744 //if (longtrack) besttrack=longtrack;
a4354152 3745 //
3746 // RS do shared cluster analysis here only if the new sharing analysis is not requested
04315dad 3747 //RRR if (fFlagFakes) return besttrack;
e43c066c 3748
3749 Int_t list[6];
00a7cc50 3750 AliITSRecPoint * clist[6];
e43c066c 3751 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3752 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3753 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3754 RegisterClusterTracks(besttrack,esdindex);
3755 }
3756 //
3757 //
3758 if (shared>0.0){
3759 Int_t nshared;
3760 Int_t overlist[6];
3761 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3762 if (sharedtrack>=0){
3763 //
04315dad 3764 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5,original);
e43c066c 3765 if (besttrack){
3766 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3767 }
3768 else return 0;
3769 }
3770 }
3771
3772 if (shared>2.5) return 0;
3773 if (shared>1.0) return besttrack;
3774 //
628e7bb0 3775 // Don't sign clusters if not gold track
3776 //
3777 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3778 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3779 //
e43c066c 3780 if (fConstraint[fPass]){
3781 //
3782 // sign clusters
3783 //
3784 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3785 for (Int_t i=0;i<6;i++){
b9671574 3786 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3787 if (index<0) continue;
e43c066c 3788 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3789 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3790 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3791 if (!c) continue;
3792 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3793 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3794 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3795 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3796 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3797 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3798
3799 Bool_t cansign = kTRUE;
3800 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3801 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3802 if (!track) continue;
b9671574 3803 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3804 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3805 cansign = kFALSE;
3806 break;
3807 }
3808 }
3809 if (cansign){
b9671574 3810 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3811 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3812 if (!c->IsUsed()) c->Use();
3813 }
3814 }
3815 }
3816 return besttrack;
3817}
44347160 3818//------------------------------------------------------------------------
e43c066c 3819void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3820{
3821 //
3822 // get "best" hypothesys
628e7bb0 3823 //
e43c066c 3824
3825 Int_t nentries = itsTracks.GetEntriesFast();
3826 for (Int_t i=0;i<nentries;i++){
15dd636f 3827 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3828 if (!track) continue;
3829 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3830 if (!array) continue;
3831 if (array->GetEntriesFast()<=0) continue;
3832 //
15dd636f 3833 AliITStrackMI* longtrack=0;
e43c066c 3834 Float_t minn=0;
04315dad 3835 Float_t maxchi2=1000;
e43c066c 3836 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3837 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3838 if (!trackHyp) continue;
3839 if (trackHyp->GetGoldV0()) {
3840 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3841 break;
3842 }
a5d0fae6 3843 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3844 Float_t chi2 = trackHyp->GetChi2MIP(0);
a4354152 3845 if (fSelectBestMIP03) chi2 *= trackHyp->GetChi2MIP(3);
3846 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = chi2; //trackHyp->GetChi2MIP(0);
3847 //
3848 if (fAfterV0){ // ??? RS
a5d0fae6 3849 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3850 }
628e7bb0 3851 if (chi2 > maxchi2) continue;
a4354152 3852 minn = trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3853 if (fSelectBestMIP03) minn++; // allow next to longest to win
628e7bb0 3854 maxchi2 = chi2;
a5d0fae6 3855 longtrack=trackHyp;
e43c066c 3856 }
628e7bb0 3857 //
3858 //
3859 //
15dd636f 3860 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3861 if (!longtrack) {longtrack = besttrack;}
3862 else besttrack= longtrack;
628e7bb0 3863 //
afd25725 3864 if (besttrack) {
04315dad 3865 Int_t list[6];
3866 AliITSRecPoint * clist[6];
3867 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3868 //
3869 track->SetNUsed(shared);
b9671574 3870 track->SetNSkipped(besttrack->GetNSkipped());
3871 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
04315dad 3872 if (shared>0) {
3873 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3874 Int_t nshared;
3875 Int_t overlist[6];
e43c066c 3876 //
04315dad 3877 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3878 //if (sharedtrack==-1) sharedtrack=0;
3879 if (sharedtrack>=0) {
3880 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5,track);
3881 }
3882 }
3883 if (besttrack&&fAfterV0) {
628e7bb0 3884 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
a4354152 3885 track->SetWinner(besttrack);
628e7bb0 3886 }
04315dad 3887 if (besttrack) {
3888 if (fConstraint[fPass]) {
3889 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3890 track->SetWinner(besttrack);
3891 }
3892 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
9cd19c63 3893 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3894 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3895 }
04315dad 3896 }
a4354152 3897 }
e43c066c 3898 }
3899}
a4354152 3900
3901//------------------------------------------------------------------------
a878a855 3902void AliITStrackerMI::FlagFakes(const TObjArray &itsTracks)
a4354152 3903{
3904 //
3905 // RS: flag those tracks which are suxpected to have fake clusters
3906 //
3907 const double kThreshPt = 0.5;
3908 AliRefArray *refArr[6];
3909 //
3910 for (int i=0;i<6;i++) {
3911 int ncl = fgLayers[i].GetNumberOfClusters();
3912 refArr[i] = new AliRefArray(ncl,TMath::Min(ncl,1000));
3913 }
3914 Int_t nentries = itsTracks.GetEntriesFast();
3915 //
3916 // fill cluster->track associations
3917 for (Int_t itr=0;itr<nentries;itr++){
3918 AliITStrackMI* track = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3919 if (!track) continue;
3920 AliITStrackMI* trackITS = track->GetWinner();
3921 if (!trackITS) continue;
3922 for (int il=trackITS->GetNumberOfClusters();il--;) {
3923 int idx = trackITS->GetClusterIndex(il);
3924 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3925 // if (c>fgLayers[l].GetNumberOfClusters()) continue;
3926 refArr[l]->AddReference(c, itr);
3927 }
3928 }
3929 //
3930 const UInt_t kMaxRef = 100;
3931 UInt_t crefs[kMaxRef];
3932 Int_t ncrefs=0;
3933 // process tracks with shared clusters
3934 for (int itr=0;itr<nentries;itr++){
3935 AliITStrackMI* track0 = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
3936 AliITStrackMI* trackH0 = track0->GetWinner();
3937 if (!trackH0) continue;
3938 AliESDtrack* esd0 = track0->GetESDtrack();
3939 //
3940 for (int il=0;il<trackH0->GetNumberOfClusters();il++) {
3941 int idx = trackH0->GetClusterIndex(il);
3942 Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
3943 ncrefs = refArr[l]->GetReferences(c,crefs,kMaxRef);
3944 if (ncrefs<2) continue; // there will be always self-reference, for sharing needs at least 2
3945 esd0->SetITSSharedFlag(l);
3946 for (int ir=ncrefs;ir--;) {
3947 if (int(crefs[ir]) <= itr) continue; // ==:selfreference, <: the same pair will be checked with >
3948 AliITStrackMI* track1 = (AliITStrackMI*)itsTracks.UncheckedAt(crefs[ir]);
3949 AliITStrackMI* trackH1 = track1->GetWinner();
3950 AliESDtrack* esd1 = track1->GetESDtrack();
3951 esd1->SetITSSharedFlag(l);
3952 //
3953 double pt0 = trackH0->Pt(), pt1 = trackH1->Pt(), res = 0.;
3954 if (pt0>kThreshPt && pt0-pt1>0.2+0.2*(pt0-kThreshPt) ) res = -100;
3955 else if (pt1>kThreshPt && pt1-pt0>0.2+0.2*(pt1-kThreshPt) ) res = 100;
3956
3957 // select the one with smallest chi2's product
3958 res += trackH0->GetChi2MIP(0)*trackH0->GetChi2MIP(3);
3959 res -= trackH1->GetChi2MIP(0)*trackH1->GetChi2MIP(3);
3960 //
3961 if (res<0) esd1->SetITSFakeFlag(); // esd0 is winner
3962 else esd0->SetITSFakeFlag(); // esd1 is winner
3963 }
3964 //
3965 }
3966 //
3967 }
3968 //
3969 for (int i=6;i--;) delete refArr[i];
3970}
3971
44347160 3972//------------------------------------------------------------------------
15dd636f 3973void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3974 //--------------------------------------------------------------------
3975 //This function "cooks" a track label. If label<0, this track is fake.
3976 //--------------------------------------------------------------------
3977 Int_t tpcLabel=-1;
3978
d3dbf323 3979 if (track->GetESDtrack()){
3980 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3981 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3982 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3983 }
b9671574 3984 track->SetChi2MIP(9,0);
e43c066c 3985 Int_t nwrong=0;
3986 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3987 Int_t cindex = track->GetClusterIndex(i);
3988 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3989 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3990 Int_t isWrong=1;
3991 for (Int_t ind=0;ind<3;ind++){
84a21804 3992 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 3993 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3994 }
b9671574 3995 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3996 nwrong+=isWrong;
3997 }
7d43b4c4 3998 Int_t nclusters = track->GetNumberOfClusters();
3999 if (nclusters > 0) //PH Some tracks don't have any cluster
4000 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 4001 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
4002 track->SetLabel(-tpcLabel);
4003 } else {
4004 track->SetLabel(tpcLabel);
e43c066c 4005 }
9be1d1c7 4006 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 4007
4008}
44347160 4009//------------------------------------------------------------------------
88e3c173 4010void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
4011 //
4012 // Fill the dE/dx in this track
e43c066c 4013 //
b9671574 4014 track->SetChi2MIP(9,0);
e43c066c 4015 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
4016 Int_t cindex = track->GetClusterIndex(i);
4017 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 4018 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 4019 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 4020 Int_t isWrong=1;
4021 for (Int_t ind=0;ind<3;ind++){
4022 if (cl->GetLabel(ind)==lab) isWrong=0;
4023 }
b9671574 4024 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 4025 }
e43c066c 4026 Double_t low=0.;
4027 Double_t up=0.51;
09cf9d66 4028 track->CookdEdx(low,up);
e43c066c 4029}
44347160 4030//------------------------------------------------------------------------
e50912db 4031void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 4032 //
a70ed6ad 4033 // Create some arrays
e43c066c 4034 //
afd25725 4035 if (fCoefficients) delete []fCoefficients;
4036 fCoefficients = new Float_t[ntracks*48];
4037 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 4038}
44347160 4039//------------------------------------------------------------------------
00a7cc50 4040Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 4041{
4042 //
a70ed6ad 4043 // Compute predicted chi2
e43c066c 4044 //
242bd643 4045 // Take into account the mis-alignment (bring track to cluster plane)
4046 Double_t xTrOrig=track->GetX();
4047 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
d9ead1a0 4048 Float_t erry,errz,covyz;
e43c066c 4049 Float_t theta = track->GetTgl();
4050 Float_t phi = track->GetSnp();
242bd643 4051 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 4052 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 4053 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 4054 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 4055 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 4056 // Bring the track back to detector plane in ideal geometry
4057 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 4058 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 4059 Float_t ny,nz;
e50912db 4060 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 4061 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
4062 if (delta>1){
4063 chi2+=0.5*TMath::Min(delta/2,2.);
4064 chi2+=2.*cluster->GetDeltaProbability();
4065 }
4066 //
b9671574 4067 track->SetNy(layer,ny);
4068 track->SetNz(layer,nz);
4069 track->SetSigmaY(layer,erry);
4070 track->SetSigmaZ(layer, errz);
d9ead1a0 4071 track->SetSigmaYZ(layer,covyz);
e43c066c 4072 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 4073 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 4074 return chi2;
4075
4076}
e50912db 4077//------------------------------------------------------------------------
4078Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 4079{
4080 //
a70ed6ad 4081 // Update ITS track
e43c066c 4082 //
4083 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 4084 track->SetClIndex(layer, index);
572f41f9 4085 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
4086 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
4087 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
4088 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
4089 }
e43c066c 4090 }
a504d56f 4091
88e3c173 4092 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 4093
afd25725 4094
1c97ce2f 4095 // Take into account the mis-alignment (bring track to cluster plane)
4096 Double_t xTrOrig=track->GetX();
4187a601 4097 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
4098 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
4099 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
4100 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 4101
9be1d1c7 4102 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 4103
150f264c 4104 AliCluster c(*cl);
4105 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
4106 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 4107 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 4108
1c97ce2f 4109
4110 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 4111 // Bring the track back to detector plane in ideal geometry
9be1d1c7 4112 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 4113
4187a601 4114 if(!updated) AliDebug(2,"update failed");
1c97ce2f 4115 return updated;
e43c066c 4116}
150f264c 4117
44347160 4118//------------------------------------------------------------------------
a70ed6ad 4119void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 4120{
4121 //
4122 //DCA sigmas parameterization
4123 //to be paramterized using external parameters in future
4124 //
4125 //
63126a46 4126 Double_t curv=track->GetC();
4127 sigmarfi = 0.0040+1.4 *TMath::Abs(curv)+332.*curv*curv;
4128 sigmaz = 0.0110+4.37*TMath::Abs(curv);
628e7bb0 4129}
e50912db 4130//------------------------------------------------------------------------
a70ed6ad 4131void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 4132{
4133 //
a70ed6ad 4134 // Clusters from delta electrons?
e43c066c 4135 //
a70ed6ad 4136 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 4137 if (entries<4) return;
a70ed6ad 4138 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 4139 Int_t layer = cluster->GetLayer();
4140 if (layer>1) return;
4141 Int_t index[10000];
4142 Int_t ncandidates=0;
4143 Float_t r = (layer>0)? 7:4;
4144 //
4145 for (Int_t i=0;i<entries;i++){
a70ed6ad 4146 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 4147 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
4148 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
4149 index[ncandidates] = i; //candidate to belong to delta electron track
4150 ncandidates++;
4151 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
4152 cl0->SetDeltaProbability(1);
4153 }
4154 }
4155 //
4156 //
4157 //
4158 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 4159 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 4160 if (cl0->GetDeltaProbability()>0.8) continue;
4161 //
4162 Int_t ncl = 0;
4163 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
4164 sumy=sumz=sumy2=sumyz=sumw=0.0;
4165 for (Int_t j=0;j<ncandidates;j++){
4166 if (i==j) continue;
a70ed6ad 4167 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 4168 //
4169 Float_t dz = cl0->GetZ()-cl1->GetZ();
4170 Float_t dy = cl0->GetY()-cl1->GetY();
4171 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
4172 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
4173 y[ncl] = cl1->GetY();
4174 z[ncl] = cl1->GetZ();
4175 sumy+= y[ncl]*weight;
4176 sumz+= z[ncl]*weight;
4177 sumy2+=y[ncl]*y[ncl]*weight;
4178 sumyz+=y[ncl]*z[ncl]*weight;
4179 sumw+=weight;
4180 ncl++;
4181 }
4182 }
4183 if (ncl<4) continue;
4184 Float_t det = sumw*sumy2 - sumy*sumy;
4185 Float_t delta=1000;
4186 if (TMath::Abs(det)>0.01){
4187 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
4188 Float_t k = (sumyz*sumw - sumy*sumz)/det;
4189 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
4190 }
4191 else{
4192 Float_t z0 = sumyz/sumy;
4193 delta = TMath::Abs(cl0->GetZ()-z0);
4194 }
4195 if ( delta<0.05) {
4196 cl0->SetDeltaProbability(1-20.*delta);
4197 }
4198 }
4199}
44347160 4200//------------------------------------------------------------------------
15dd636f 4201void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 4202{
4203 //
a70ed6ad 4204 // Update ESD track
e43c066c 4205 //
4206 track->UpdateESDtrack(flags);
b9671574 4207 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 4208 if (oldtrack) delete oldtrack;
b9671574 4209 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
5668b5b2 4210 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
4211 // printf("Problem\n");
4212 // }
e43c066c 4213}
44347160 4214//------------------------------------------------------------------------
81e97e0d 4215Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
4216 //
ae00569a 4217 // Get nearest upper layer close to the point xr.
81e97e0d 4218 // rough approximation
4219 //
bf6adc12 4220 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 4221 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
4222 Int_t res =6;
4223 for (Int_t i=0;i<6;i++){
bf6adc12 4224 if (radius<kRadiuses[i]){
81e97e0d 4225 res =i;
4226 break;
4227 }
4228 }
4229 return res;
4230}
44347160 4231//------------------------------------------------------------------------
e50912db 4232void AliITStrackerMI::BuildMaterialLUT(TString material) {
4233 //--------------------------------------------------------------------
4234 // Fill a look-up table with mean material
4235 //--------------------------------------------------------------------
4236
4237 Int_t n=1000;
4238 Double_t mparam[7];
4239 Double_t point1[3],point2[3];
4240 Double_t phi,cosphi,sinphi,z;
4241 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 4242 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
4243 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 4244
4245 Int_t ifirst=0,ilast=0;
4246 if(material.Contains("Pipe")) {
4247 ifirst=6; ilast=6;
4248 } else if(material.Contains("Shields")) {
4249 ifirst=7; ilast=8;
4250 } else if(material.Contains("Layers")) {
4251 ifirst=0; ilast=5;
4252 } else {
4253 Error("BuildMaterialLUT","Wrong layer name\n");
4254 }
4255
4256 for(Int_t imat=ifirst; imat<=ilast; imat++) {
4257 Double_t param[5]={0.,0.,0.,0.,0.};
4258 for (Int_t i=0; i<n; i++) {
4259 phi = 2.*TMath::Pi()*gRandom->Rndm();
4260 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
4261 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
4262 point1[0] = rmin[imat]*cosphi;
4263 point1[1] = rmin[imat]*sinphi;
4264 point1[2] = z;
4265 point2[0] = rmax[imat]*cosphi;
4266 point2[1] = rmax[imat]*sinphi;
4267 point2[2] = z;
4268 AliTracker::MeanMaterialBudget(point1,point2,mparam);
4269 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
4270 }
4271 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
4272 if(imat<=5) {
4273 fxOverX0Layer[imat] = param[1];
4274 fxTimesRhoLayer[imat] = param[0]*param[4];
4275 } else if(imat==6) {
4276 fxOverX0Pipe = param[1];
4277 fxTimesRhoPipe = param[0]*param[4];
4278 } else if(imat==7) {
4279 fxOverX0Shield[0] = param[1];
4280 fxTimesRhoShield[0] = param[0]*param[4];
4281 } else if(imat==8) {
4282 fxOverX0Shield[1] = param[1];
4283 fxTimesRhoShield[1] = param[0]*param[4];
4284 }
4285 }
4286 /*
4287 printf("%s\n",material.Data());
4288 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
4289 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
4290 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
4291 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
4292 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
4293 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
4294 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
4295 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
4296 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
4297 */
4298 return;
4299}
4300//------------------------------------------------------------------------
4301Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
4302 TString direction) {
4303 //-------------------------------------------------------------------
4304 // Propagate beyond beam pipe and correct for material
4305 // (material budget in different ways according to fUseTGeo value)
7131593b 4306 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4307 //-------------------------------------------------------------------
4308
4309 // Define budget mode:
4310 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4311 // 1: material from TGeo in one step (on the fly)
e50912db 4312 // 2: material from lut
9be1d1c7 4313 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4314 Int_t mode;
4315 switch(fUseTGeo) {
4316 case 0:
4317 mode=0;
4318 break;
4319 case 1:
4320 mode=1;
4321 break;
4322 case 2:
4323 mode=2;
4324 break;
4325 case 3:
4326 if(fTrackingPhase.Contains("Clusters2Tracks"))
4327 { mode=3; } else { mode=1; }
4328 break;
4329 case 4:
4330 if(fTrackingPhase.Contains("Clusters2Tracks"))
4331 { mode=3; } else { mode=2; }
4332 break;
4333 default:
4334 mode=0;
4335 break;
4336 }
4337 if(fTrackingPhase.Contains("Default")) mode=0;
4338
4339 Int_t index=fCurrentEsdTrack;
4340
4341 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4342 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4343 Double_t xToGo;
4344 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4345
4346 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4347
4348 switch(mode) {
4349 case 0:
4350 xOverX0 = AliITSRecoParam::GetdPipe();
4351 x0 = AliITSRecoParam::GetX0Be();
4352 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4353 lengthTimesMeanDensity *= dir;
7131593b 4354 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4355 break;
4356 case 1:
4357 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4358 break;
4359 case 2:
4360 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4361 xOverX0 = fxOverX0Pipe;
4362 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4363 lengthTimesMeanDensity *= dir;
7131593b 4364 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4365 break;
4366 case 3:
4367 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4368 if(fxOverX0PipeTrks[index]<0) {
4369 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4370 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4371 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4372 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4373 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4374 return 1;
4375 }
4376 xOverX0 = fxOverX0PipeTrks[index];
4377 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4378 lengthTimesMeanDensity *= dir;
7131593b 4379 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4380 break;
4381 }
4382
e50912db 4383 return 1;
4384}
4385//------------------------------------------------------------------------
4386Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4387 TString shield,
4388 TString direction) {
4389 //-------------------------------------------------------------------
4390 // Propagate beyond SPD or SDD shield and correct for material
4391 // (material budget in different ways according to fUseTGeo value)
7131593b 4392 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4393 //-------------------------------------------------------------------
4394
4395 // Define budget mode:
4396 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4397 // 1: material from TGeo in steps of X cm (on the fly)
4398 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4399 // 2: material from lut
9be1d1c7 4400 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4401 Int_t mode;
4402 switch(fUseTGeo) {
4403 case 0:
4404 mode=0;
4405 break;
4406 case 1:
4407 mode=1;
4408 break;
4409 case 2:
4410 mode=2;
4411 break;
4412 case 3:
4413 if(fTrackingPhase.Contains("Clusters2Tracks"))
4414 { mode=3; } else { mode=1; }
4415 break;
4416 case 4:
4417 if(fTrackingPhase.Contains("Clusters2Tracks"))
4418 { mode=3; } else { mode=2; }
4419 break;
4420 default:
4421 mode=0;
4422 break;
4423 }
4424 if(fTrackingPhase.Contains("Default")) mode=0;
4425
4426 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4427 Double_t rToGo;
4428 Int_t shieldindex=0;
4429 if (shield.Contains("SDD")) { // SDDouter
4430 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4431 shieldindex=1;
4432 } else if (shield.Contains("SPD")) { // SPDouter
4433 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4434 shieldindex=0;
4435 } else {
4436 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4437 return 0;
4438 }
67178f34 4439
4440 // do nothing if we are already beyond the shield
4441 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4442 if(dir<0 && rTrack > rToGo) return 1; // going outward
4443 if(dir>0 && rTrack < rToGo) return 1; // going inward
4444
4445
70e83b26 4446 Double_t xToGo;
4447 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4448
4449 Int_t index=2*fCurrentEsdTrack+shieldindex;
4450
4451 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4452 Int_t nsteps=1;
e50912db 4453
4454 switch(mode) {
4455 case 0:
4456 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4457 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4458 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4459 lengthTimesMeanDensity *= dir;
7131593b 4460 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4461 break;
4462 case 1:
9be1d1c7 4463 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4464 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4465 break;
4466 case 2:
4467 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4468 xOverX0 = fxOverX0Shield[shieldindex];
4469 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4470 lengthTimesMeanDensity *= dir;
7131593b 4471 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4472 break;
4473 case 3:
4474 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4475 if(fxOverX0ShieldTrks[index]<0) {
4476 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4477 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4478 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4479 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4480 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4481 return 1;
4482 }
4483 xOverX0 = fxOverX0ShieldTrks[index];
4484 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4485 lengthTimesMeanDensity *= dir;
7131593b 4486 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4487 break;
4488 }
4489
e50912db 4490 return 1;
4491}
4492//------------------------------------------------------------------------
4493Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4494 Int_t layerindex,
4495 Double_t oldGlobXYZ[3],
4496 TString direction) {
4497 //-------------------------------------------------------------------
4498 // Propagate beyond layer and correct for material
4499 // (material budget in different ways according to fUseTGeo value)
7131593b 4500 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4501 //-------------------------------------------------------------------
4502
4503 // Define budget mode:
4504 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4505 // 1: material from TGeo in stepsof X cm (on the fly)
4506 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4507 // 2: material from lut
9be1d1c7 4508 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4509 Int_t mode;
4510 switch(fUseTGeo) {
4511 case 0:
4512 mode=0;
4513 break;
4514 case 1:
4515 mode=1;
4516 break;
4517 case 2:
4518 mode=2;
4519 break;
4520 case 3:
4521 if(fTrackingPhase.Contains("Clusters2Tracks"))
4522 { mode=3; } else { mode=1; }
4523 break;
4524 case 4:
4525 if(fTrackingPhase.Contains("Clusters2Tracks"))
4526 { mode=3; } else { mode=2; }
4527 break;
4528 default:
4529 mode=0;
4530 break;
4531 }
4532 if(fTrackingPhase.Contains("Default")) mode=0;
4533
4534 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4535
4536 Double_t r=fgLayers[layerindex].GetR();
4537 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4538
4539 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4540 Double_t xToGo;
4541 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4542
4543 Int_t index=6*fCurrentEsdTrack+layerindex;
4544
e50912db 4545
4546 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4547 Int_t nsteps=1;
7131593b 4548
4549 // back before material (no correction)
d634c32b 4550 Double_t rOld,xOld;
7131593b 4551 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4552 if (!t->GetLocalXat(rOld,xOld)) return 0;
4553 if (!t->Propagate(xOld)) return 0;
e50912db 4554
4555 switch(mode) {
4556 case 0:
4557 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4558 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4559 lengthTimesMeanDensity *= dir;
7131593b 4560 // Bring the track beyond the material
4561 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4562 break;
4563 case 1:
9be1d1c7 4564 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4565 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4566 break;
4567 case 2:
4568 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4569 xOverX0 = fxOverX0Layer[layerindex];
4570 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4571 lengthTimesMeanDensity *= dir;
7131593b 4572 // Bring the track beyond the material
4573 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4574 break;
4575 case 3:
4576 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4577 if(fxOverX0LayerTrks[index]<0) {
4578 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4579 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4580 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4581 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4582 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4583 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4584 return 1;
e50912db 4585 }
4586 xOverX0 = fxOverX0LayerTrks[index];
4587 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4588 lengthTimesMeanDensity *= dir;
7131593b 4589 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4590 break;
4591 }
4592
7131593b 4593
e50912db 4594 return 1;
4595}
4596//------------------------------------------------------------------------
4597void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4598 //-----------------------------------------------------------------
4599 // Initialize LUT for storing material for each prolonged track
4600 //-----------------------------------------------------------------
4601 fxOverX0PipeTrks = new Float_t[ntracks];
4602 fxTimesRhoPipeTrks = new Float_t[ntracks];
4603 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4604 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4605 fxOverX0LayerTrks = new Float_t[ntracks*6];
4606 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4607
4608 for(Int_t i=0; i<ntracks; i++) {
4609 fxOverX0PipeTrks[i] = -1.;
4610 fxTimesRhoPipeTrks[i] = -1.;
4611 }
4612 for(Int_t j=0; j<ntracks*2; j++) {
4613 fxOverX0ShieldTrks[j] = -1.;
4614 fxTimesRhoShieldTrks[j] = -1.;
4615 }
4616 for(Int_t k=0; k<ntracks*6; k++) {
4617 fxOverX0LayerTrks[k] = -1.;
4618 fxTimesRhoLayerTrks[k] = -1.;
4619 }
4620
4621 fNtracks = ntracks;
4622
4623 return;
4624}
4625//------------------------------------------------------------------------
4626void AliITStrackerMI::DeleteTrksMaterialLUT() {
4627 //-----------------------------------------------------------------
4628 // Delete LUT for storing material for each prolonged track
4629 //-----------------------------------------------------------------
4630 if(fxOverX0PipeTrks) {
4631 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4632 }
4633 if(fxOverX0ShieldTrks) {
4634 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4635 }
4636
4637 if(fxOverX0LayerTrks) {
4638 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4639 }
4640 if(fxTimesRhoPipeTrks) {
4641 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4642 }
4643 if(fxTimesRhoShieldTrks) {
4644 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4645 }
4646 if(fxTimesRhoLayerTrks) {
4647 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4648 }
4649 return;
4650}
4651//------------------------------------------------------------------------
4fa7f7d1 4652void AliITStrackerMI::SetForceSkippingOfLayer() {
4653 //-----------------------------------------------------------------
4654 // Check if we are forced to skip layers
4655 // either we set to skip them in RecoParam
4656 // or they were off during data-taking
4657 //-----------------------------------------------------------------
4658
4659 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4660
4fa7f7d1 4661 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4662 fForceSkippingOfLayer[l] = 0;
4663 // check reco param
4664 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4665 // check run info
4666
87b4605f 4667 if(eventInfo &&
4668 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4669 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4670 if(l==0 || l==1) {
4671 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4672 } else if(l==2 || l==3) {
4673 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4674 } else {
4675 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4676 }
4677 }
4678 }
4679 return;
4680}
4681//------------------------------------------------------------------------
a70ed6ad 4682Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4683 Int_t ilayer,Int_t idet) const {
2755f080 4684 //-----------------------------------------------------------------
4685 // This method is used to decide whether to allow a prolongation
4686 // without clusters, because we want to skip the layer.
4687 // In this case the return value is > 0:
4688 // return 1: the user requested to skip a layer
371164ec 4689 // return 2: track outside z acceptance
2755f080 4690 //-----------------------------------------------------------------
e43c066c 4691
4fa7f7d1 4692 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4693
371164ec 4694 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4695
4696 if (idet<0 && // out in z
4697 ilayer>innerLayCanSkip &&
4698 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4699 // check if track will cross SPD outer layer
4700 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4701 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4702 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4703 }
371164ec 4704 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4705 }
51ad6848 4706
2755f080 4707 return 0;
4708}
4709//------------------------------------------------------------------------
23197852 4710Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4711 Int_t ilayer,Int_t idet,
1c97ce2f 4712 Double_t dz,Double_t dy,
23197852 4713 Bool_t noClusters) const {
6518a6c5 4714 //-----------------------------------------------------------------
4715 // This method is used to decide whether to allow a prolongation
ae00569a 4716 // without clusters, because there is a dead zone in the road.
6518a6c5 4717 // In this case the return value is > 0:
4718 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4719 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4720 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4721 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4722 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4723 //-----------------------------------------------------------------
4724
4725 // check dead zones at z=0,+-7cm in the SPD
4726 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4727 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4728 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4729 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4730 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4731 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4732 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4733 for (Int_t i=0; i<3; i++)
4187a601 4734 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4735 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4736 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4737 }
6518a6c5 4738 }
4739
23197852 4740 // check bad zones from OCDB
4741 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4742
23197852 4743 if (idet<0) return 0;
ae00569a 4744
23197852 4745 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4746
23197852 4747 Int_t detType=-1;
4748 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4749 if (ilayer==0 || ilayer==1) { // ---------- SPD
4750 detType = 0;
4751 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4752 detType = 1;
4753 detSizeFactorX *= 2.;
4754 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4755 detType = 2;
4756 }
a70ed6ad 4757 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4758 if (detType==2) segm->SetLayer(ilayer+1);
4759 Float_t detSizeX = detSizeFactorX*segm->Dx();
4760 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4761
4762 // check if the road overlaps with bad chips
4763 Float_t xloc,zloc;
e9b15b0c 4764 if(!(LocalModuleCoord(ilayer,idet,track,xloc,zloc)))return 0;
1c97ce2f 4765 Float_t zlocmin = zloc-dz;
4766 Float_t zlocmax = zloc+dz;
4767 Float_t xlocmin = xloc-dy;
4768 Float_t xlocmax = xloc+dy;
23197852 4769 Int_t chipsInRoad[100];
4770
4187a601 4771 // check if road goes out of detector
4772 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4773 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4774 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4775 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4776 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4777 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));
4778
4779 // check if this detector is bad
4780 if (det.IsBad()) {
4781 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4782 if(!touchNeighbourDet) {
4783 return 2; // all detectors in road are bad
4784 } else {
4785 return 3; // at least one is bad
4786 }
4787 }
4788
23197852 4789 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4790 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4791 if (!nChipsInRoad) return 0;
4792
4793 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4794 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4795 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4796 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4797 if (det.IsChipBad(chipsInRoad[iCh])) {
4798 anyBad=kTRUE;
4799 } else {
4800 anyGood=kTRUE;
4801 }
6518a6c5 4802 }
4803
4187a601 4804 if (!anyGood) {
4805 if(!touchNeighbourDet) {
4806 AliDebug(2,"all bad in road");
4807 return 2; // all chips in road are bad
4808 } else {
4809 return 3; // at least a bad chip in road
4810 }
4811 }
23197852 4812
4187a601 4813 if (anyBad) {
4814 AliDebug(2,"at least a bad in road");
4815 return 3; // at least a bad chip in road
4816 }
23197852 4817
4818
4819 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4820 || !noClusters) return 0;
4821
4822 // There are no clusters in road: check if there is at least
6a0fdcbd 4823 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4824
4187a601 4825 Int_t idetInITS=idet;
4826 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4827
4187a601 4828 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4829 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4830 return 4;
4187a601 4831 }
4832 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4833
6518a6c5 4834 return 0;
4835}
4836//------------------------------------------------------------------------
ae00569a 4837Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4838 const AliITStrackMI *track,
ae00569a 4839 Float_t &xloc,Float_t &zloc) const {
4840 //-----------------------------------------------------------------
4841 // Gives position of track in local module ref. frame
4842 //-----------------------------------------------------------------
4843
4844 xloc=0.;
4845 zloc=0.;
4846
371164ec 4847 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4848
4849 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4850
4851 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4852
ae00569a 4853 Int_t det = idet - (lad-1)*ndet + 1;
4854
4855 Double_t xyzGlob[3],xyzLoc[3];
4856
1c97ce2f 4857 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4858 // take into account the misalignment: xyz at real detector plane
d1181f10 4859 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4860
d1181f10 4861 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4862
4863 xloc = (Float_t)xyzLoc[0];
4864 zloc = (Float_t)xyzLoc[2];
4865
4866 return kTRUE;
4867}
4868//------------------------------------------------------------------------
879cdb02 4869//------------------------------------------------------------------------
a70ed6ad 4870Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4871//
4872// Method to be optimized further:
4873// Aim: decide whether a track can be used for PlaneEff evaluation
4874// the decision is taken based on the track quality at the layer under study
4875// no information on the clusters on this layer has to be used
4876// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4877// the cut is done on number of sigmas from the boundaries
4878//
4879// Input: Actual track, layer [0,5] under study
4880// Output: none
4881// Return: kTRUE if this is a good track
7167ae53 4882//
4883// it will apply a pre-selection to obtain good quality tracks.
4884// Here also you will have the possibility to put a control on the
4885// impact point of the track on the basic block, in order to exclude border regions
4886// this will be done by calling a proper method of the AliITSPlaneEff class.
4887//
4888// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4889// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4890//
4891 Int_t index[AliITSgeomTGeo::kNLayers];
4892 Int_t k;
4893 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4894 //
4895 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4896 index[k]=clusters[k];
4897 }
4898
0e91092f 4899 if(!fPlaneEff)
a31a139f 4900 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4901 AliITSlayer &layer=fgLayers[ilayer];
4902 Double_t r=layer.GetR();
8a32c4b5 4903 AliITStrackMI tmp(*track);
4904
0ed58a47 4905// require a minimal number of cluster in other layers and eventually clusters in closest layers
061c42a0 4906 Int_t ncl_out=0; Int_t ncl_in=0;
4907 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
879cdb02 4908 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
0ed58a47 4909 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4910 // if (tmp.GetClIndex(lay)>=0) ncl_out++;
4911if(index[lay]>=0)ncl_out++;
0ed58a47 4912 }
061c42a0 4913 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4914 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4915 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4916 if (index[lay]>=0) ncl_in++;
061c42a0 4917 }
63cce7b6 4918 Int_t ncl=ncl_out+ncl_in;
0ed58a47 4919 Bool_t nextout = kFALSE;
4920 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4921 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4922 Bool_t nextin = kFALSE;
4923 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4924 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4925 // maximum number of missing clusters allowed in outermost layers
4926 if(ncl_out<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
4927 return kFALSE;
4928 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4929 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 4930 return kFALSE;
4931 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4932 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4933 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4934 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4935
8a32c4b5 4936// detector number
4937 Double_t phi,z;
4938 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4939 Int_t idet=layer.FindDetectorIndex(phi,z);
4940 if(idet<0) { AliInfo(Form("cannot find detector"));
4941 return kFALSE;}
4942
4943 // here check if it has good Chi Square.
4944
4945 //propagate to the intersection with the detector plane
4946 const AliITSdetector &det=layer.GetDetector(idet);
4947 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4948
4949 Float_t locx; //
4950 Float_t locz; //
0e91092f 4951 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4952 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4953 if(key>fPlaneEff->Nblock()) return kFALSE;
4954 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4955 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4956 //***************
0e91092f 4957 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4958 //
061c42a0 4959 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4960 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
0e91092f 4961 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4962 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
879cdb02 4963 // done for RecPoints
8a32c4b5 4964
1c97ce2f 4965 // exclude tracks at boundary between detectors
0e91092f 4966 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4967 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4968 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4969 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4970 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
0e91092f 4971 if ( (locx-dx < blockXmn+boundaryWidth) ||
4972 (locx+dx > blockXmx-boundaryWidth) ||
4973 (locz-dz < blockZmn+boundaryWidth) ||
4974 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4975 return kTRUE;
7167ae53 4976}
4977//------------------------------------------------------------------------
a70ed6ad 4978void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4979//
4980// This Method has to be optimized! For the time-being it uses the same criteria
4981// as those used in the search of extra clusters for overlapping modules.
4982//
4983// Method Purpose: estabilish whether a track has produced a recpoint or not
4984// in the layer under study (For Plane efficiency)
4985//
4986// inputs: AliITStrackMI* track (pointer to a usable track)
4987// outputs: none
4988// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4989// traversed by this very track. In details:
4990// - if a cluster can be associated to the track then call
4991// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4992// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4993//
a31a139f 4994 if(!fPlaneEff)
4995 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4996 AliITSlayer &layer=fgLayers[ilayer];
4997 Double_t r=layer.GetR();
7167ae53 4998 AliITStrackMI tmp(*track);
4999
5000// detector number
5001 Double_t phi,z;
5002 if (!tmp.GetPhiZat(r,phi,z)) return;
5003 Int_t idet=layer.FindDetectorIndex(phi,z);
5004
8a32c4b5 5005 if(idet<0) { AliInfo(Form("cannot find detector"));
5006 return;}
7167ae53 5007
7167ae53 5008
0e91092f 5009//propagate to the intersection with the detector plane
7167ae53 5010 const AliITSdetector &det=layer.GetDetector(idet);
5011 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 5012
1c97ce2f 5013
0e91092f 5014//***************
5015// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
5016//
5017 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
5018 TMath::Sqrt(tmp.GetSigmaZ2() +
5019 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5020 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5021 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
5022 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
5023 TMath::Sqrt(tmp.GetSigmaY2() +
5024 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5025 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5026 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
5027
5028// road in global (rphi,z) [i.e. in tracking ref. system]
5029 Double_t zmin = tmp.GetZ() - dz;
5030 Double_t zmax = tmp.GetZ() + dz;
5031 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
5032 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
5033
5034// select clusters in road
7167ae53 5035 layer.SelectClusters(zmin,zmax,ymin,ymax);
5036
0e91092f 5037// Define criteria for track-cluster association
7167ae53 5038 Double_t msz = tmp.GetSigmaZ2() +
5039 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5040 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
5041 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
5042 Double_t msy = tmp.GetSigmaY2() +
5043 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5044 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
5045 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 5046 if (tmp.GetConstrain()) {
7167ae53 5047 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
5048 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 5049 } else {
5050 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
5051 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
5052 }
7167ae53 5053 msz = 1./msz; // 1/RoadZ^2
5054 msy = 1./msy; // 1/RoadY^2
0e91092f 5055//
7167ae53 5056
5057 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
5058 Int_t idetc=-1;
8a32c4b5 5059 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
5060 //Double_t tolerance=0.2;
5061 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 5062 idetc = cl->GetDetectorIndex();
5063 if(idet!=idetc) continue;
5064 //Int_t ilay = cl->GetLayer();
5065
5066 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
5067 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
5068
5069 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 5070 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
5071 }*/
5072 Float_t locx; //
5073 Float_t locz; //
0e91092f 5074 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 5075//
5076 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
5077 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
5078 if(key>fPlaneEff->Nblock()) return;
5079 Bool_t found=kFALSE;
8a32c4b5 5080 //if (ci>=0) {
1cc5cedc 5081 Double_t chi2;
8a32c4b5 5082 while ((cl=layer.GetNextCluster(clidx))!=0) {
5083 idetc = cl->GetDetectorIndex();
5084 if(idet!=idetc) continue;
5085 // here real control to see whether the cluster can be associated to the track.
5086 // cluster not associated to track
5087 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
5088 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
5089 // calculate track-clusters chi2
1cc5cedc 5090 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
5091 // in particular, the error associated to the cluster
8a32c4b5 5092 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
5093 // chi2 cut
5094 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 5095 found=kTRUE;
8a32c4b5 5096 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 5097 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
5098 // track->SetExtraModule(ilayer,idetExtra);
5099 }
5100 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 5101 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 5102 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 5103 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
5104 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
5105 Int_t cltype[2]={-999,-999};
879cdb02 5106 // and the module
5107
5108Float_t AngleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
0e91092f 5109
5110 tr[0]=locx;
5111 tr[1]=locz;
5112 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
5113 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
5114
3ebe30ad 5115 if (found){
5116 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
5117 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
5118 cltype[0]=layer.GetCluster(ci)->GetNy();
5119 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 5120
5121 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
5122 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
5123 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
5124 // It is computed properly by calling the method
5125 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
5126 // T
5127 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
5128 //if (tmp.PropagateTo(x,0.,0.)) {
5129 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
5130 AliCluster c(*layer.GetCluster(ci));
5131 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
5132 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 5133 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 5134 clu[2]=TMath::Sqrt(c.GetSigmaY2());
5135 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 5136 //}
3ebe30ad 5137 }
879cdb02 5138 // Compute the angles between the track and the module
5139 // compute the angle "in phi direction", i.e. the angle in the transverse plane
5140 // between the normal to the module and the projection (in the transverse plane) of the
5141 // track trajectory
5142 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
5143 Float_t tgl = tmp.GetTgl();
5144 Float_t phitr = tmp.GetSnp();
5145 phitr = TMath::ASin(phitr);
5146 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
5147
5148 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
5149 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
5150 Double_t alpha =0.;
5151 alpha = tmp.GetAlpha();
5152 Double_t phiglob = alpha+phitr;
5153 Double_t p[3];
5154 p[0] = TMath::Cos(phiglob);
5155 p[1] = TMath::Sin(phiglob);
5156 p[2] = tgl;
5157 TVector3 pvec(p[0],p[1],p[2]);
5158 TVector3 normvec(rot[1],rot[4],rot[7]);
5159 Double_t angle = pvec.Angle(normvec);
5160
5161 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
5162 angle *= 180./TMath::Pi();
5163
5164 //Trasverse Plane
5165 TVector3 pt(p[0],p[1],0);
5166 TVector3 normt(rot[1],rot[4],0);
5167 Double_t anglet = pt.Angle(normt);
5168
5169 Double_t phiPt = TMath::ATan2(p[1],p[0]);
5170 if(phiPt<0)phiPt+=2.*TMath::Pi();
5171 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
5172 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
5173 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
5174 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
5175 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
5176 anglet *= 180./TMath::Pi();
5177
5178 AngleModTrack[2]=(Float_t) angle;
5179 AngleModTrack[0]=(Float_t) anglet;
5180 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
5181 AngleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
5182 AngleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
5183 AngleModTrack[1]*=180./TMath::Pi(); // in degree
5184
5185 fPlaneEff->FillHistos(key,found,tr,clu,cltype,AngleModTrack);
5fbd4fd6 5186 }
7167ae53 5187return;
5188}
a4354152 5189
5190Int_t AliITStrackerMI::FindClusterOfTrack(int label, int lr, int* store) const //RS
5191{
5192 // find the MC cluster for the label
5193 return fgLayers[lr].FindClusterForLabel(label,store);
5194}
5195
fa4c46da 5196/*
a4354152 5197Int_t AliITStrackerMI::GetPattern(const AliITStrackMI* track, char* patt)
5198{
5199 // creates pattarn of hits marking fake/corrects by f/c. Used for debugging (RS)
cff9e015 5200 strncpy(patt,"......",6);
a4354152 5201 int tpcLabel = 0;
5202 if (track->GetESDtrack()) tpcLabel = track->GetESDtrack()->GetTPCLabel();
5203 //
5204 int nwrong = 0;
5205 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
5206 Int_t cindex = track->GetClusterIndex(i);
5207 Int_t l=(cindex & 0xf0000000) >> 28;
5208 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
5209 Int_t isWrong=1;
5210 for (Int_t ind=0;ind<3;ind++) if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
5211 patt[l] = isWrong ? 'f':'c';
5212 nwrong+=isWrong;
5213 }
5214 return nwrong;
5215}
fa4c46da 5216*/
a4354152 5217//------------------------------------------------------------------------
b80c197e 5218Int_t AliITStrackerMI::AliITSlayer::FindClusterForLabel(Int_t label, Int_t *store) const
5219{ //RS
a4354152 5220 //--------------------------------------------------------------------
5221
5222 int nfound = 0;
5223 for (int ic=0;ic<fN;ic++) {
5224 const AliITSRecPoint *cl = GetCluster(ic);
5225 for (int i=0;i<3;i++) if (cl->GetLabel(i)==label) {
5226 if (nfound<50) {
5227 if (store) store[nfound] = ic;
5228 nfound++;
5229 }
5230 break;
5231 }
5232 }
5233 return nfound;
5234}
04315dad 5235