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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>
bf6adc12 35
23197852 36
4187a601 37#include "AliLog.h"
a70ed6ad 38#include "AliITSPlaneEff.h"
39#include "AliITSCalibrationSPD.h"
40#include "AliITSCalibrationSDD.h"
41#include "AliITSCalibrationSSD.h"
42#include "AliCDBEntry.h"
43#include "AliCDBManager.h"
44#include "AliAlignObj.h"
45#include "AliTrackPointArray.h"
46#include "AliESDVertex.h"
af885e0f 47#include "AliESDEvent.h"
aad72f45 48#include "AliESDtrack.h"
6c94f330 49#include "AliV0.h"
bf6adc12 50#include "AliHelix.h"
a70ed6ad 51#include "AliITSChannelStatus.h"
52#include "AliITSDetTypeRec.h"
00a7cc50 53#include "AliITSRecPoint.h"
e341247d 54#include "AliITSgeomTGeo.h"
44347160 55#include "AliITSReconstructor.h"
572f41f9 56#include "AliITSClusterParam.h"
23197852 57#include "AliITSsegmentation.h"
58#include "AliITSCalibration.h"
7167ae53 59#include "AliITSPlaneEffSPD.h"
60#include "AliITSPlaneEffSDD.h"
61#include "AliITSPlaneEffSSD.h"
44396017 62#include "AliITSV0Finder.h"
ae00569a 63#include "AliITStrackerMI.h"
e43c066c 64
65ClassImp(AliITStrackerMI)
e43c066c 66
e50912db 67AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 68
8221b41b 69AliITStrackerMI::AliITStrackerMI():AliTracker(),
70fI(0),
71fBestTrack(),
72fTrackToFollow(),
73fTrackHypothesys(),
74fBestHypothesys(),
75fOriginal(),
76fCurrentEsdTrack(),
77fPass(0),
78fAfterV0(kFALSE),
79fLastLayerToTrackTo(0),
afd25725 80fCoefficients(0),
8221b41b 81fEsd(0),
e50912db 82fTrackingPhase("Default"),
6518a6c5 83fUseTGeo(3),
e50912db 84fNtracks(0),
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),
ae00569a 96fPlaneEff(0) {
8221b41b 97 //Default constructor
e50912db 98 Int_t i;
99 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
100 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
101 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 102}
44347160 103//------------------------------------------------------------------------
1f3e997f 104AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 105fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 106fBestTrack(),
107fTrackToFollow(),
108fTrackHypothesys(),
109fBestHypothesys(),
110fOriginal(),
111fCurrentEsdTrack(),
112fPass(0),
113fAfterV0(kFALSE),
e50912db 114fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 115fCoefficients(0),
8221b41b 116fEsd(0),
e50912db 117fTrackingPhase("Default"),
6518a6c5 118fUseTGeo(3),
e50912db 119fNtracks(0),
120fxOverX0Pipe(-1.),
121fxTimesRhoPipe(-1.),
122fxOverX0PipeTrks(0),
123fxTimesRhoPipeTrks(0),
124fxOverX0ShieldTrks(0),
125fxTimesRhoShieldTrks(0),
126fxOverX0LayerTrks(0),
127fxTimesRhoLayerTrks(0),
4a66240a 128fDebugStreamer(0),
23197852 129fITSChannelStatus(0),
a70ed6ad 130fkDetTypeRec(0),
ae00569a 131fPlaneEff(0) {
e43c066c 132 //--------------------------------------------------------------------
133 //This is the AliITStrackerMI constructor
134 //--------------------------------------------------------------------
e341247d 135 if (geom) {
136 AliWarning("\"geom\" is actually a dummy argument !");
137 }
138
afd25725 139 fCoefficients = 0;
628e7bb0 140 fAfterV0 = kFALSE;
e341247d 141
e50912db 142 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 143 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
144 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
145
146 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
147 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 148 Double_t poff=TMath::ATan2(y,x);
149 Double_t zoff=z;
e341247d 150 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 151
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
e341247d 154 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 155 r += TMath::Sqrt(x*x + y*y);
e341247d 156 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 157 r += TMath::Sqrt(x*x + y*y);
158 r*=0.25;
159
160 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
161
162 for (Int_t j=1; j<nlad+1; j++) {
163 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 164 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 165 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
166 m.Multiply(tm);
a5d0fae6 167 Double_t txyz[3]={0.};
168 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 169 m.LocalToMaster(txyz,xyz);
a5d0fae6 170 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 171 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 172
173 if (phi<0) phi+=TMath::TwoPi();
174 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
175
e43c066c 176 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
177 new(&det) AliITSdetector(r,phi);
1c97ce2f 178 // compute the real radius (with misalignment)
179 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
180 mmisal.Multiply(tm);
181 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
182 mmisal.LocalToMaster(txyz,xyz);
183 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
184 det.SetRmisal(rmisal);
185
23197852 186 } // end loop on detectors
187 } // end loop on ladders
188 } // end loop on layers
e43c066c 189
e43c066c 190
e50912db 191 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 192
193 fPass=0;
194 fConstraint[0]=1; fConstraint[1]=0;
195
afd25725 196 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
197 AliITSReconstructor::GetRecoParam()->GetYVdef(),
198 AliITSReconstructor::GetRecoParam()->GetZVdef()};
199 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
200 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
201 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
202 SetVertex(xyzVtx,ersVtx);
e43c066c 203
e50912db 204 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
205 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 206 for (Int_t i=0;i<100000;i++){
207 fBestTrackIndex[i]=0;
208 }
afd25725 209
210 // store positions of centre of SPD modules (in z)
211 Double_t tr[3];
212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
213 fSPDdetzcentre[0] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
215 fSPDdetzcentre[1] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
217 fSPDdetzcentre[2] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
219 fSPDdetzcentre[3] = tr[2];
220
afd25725 221 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 222 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
223 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
224 fUseTGeo = 3;
225 }
e50912db 226
227 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
228 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
229
81e97e0d 230 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
231
7167ae53 232 // only for plane efficiency evaluation
58e8dc31 233 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
234 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 235 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 236 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 237 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
238 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
239 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
240 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 241 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 242 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
243 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 244 }
628e7bb0 245}
44347160 246//------------------------------------------------------------------------
8221b41b 247AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
248fI(tracker.fI),
249fBestTrack(tracker.fBestTrack),
250fTrackToFollow(tracker.fTrackToFollow),
251fTrackHypothesys(tracker.fTrackHypothesys),
252fBestHypothesys(tracker.fBestHypothesys),
253fOriginal(tracker.fOriginal),
254fCurrentEsdTrack(tracker.fCurrentEsdTrack),
255fPass(tracker.fPass),
256fAfterV0(tracker.fAfterV0),
257fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 258fCoefficients(tracker.fCoefficients),
8221b41b 259fEsd(tracker.fEsd),
e50912db 260fTrackingPhase(tracker.fTrackingPhase),
afd25725 261fUseTGeo(tracker.fUseTGeo),
e50912db 262fNtracks(tracker.fNtracks),
263fxOverX0Pipe(tracker.fxOverX0Pipe),
264fxTimesRhoPipe(tracker.fxTimesRhoPipe),
265fxOverX0PipeTrks(0),
266fxTimesRhoPipeTrks(0),
267fxOverX0ShieldTrks(0),
268fxTimesRhoShieldTrks(0),
269fxOverX0LayerTrks(0),
270fxTimesRhoLayerTrks(0),
4a66240a 271fDebugStreamer(tracker.fDebugStreamer),
23197852 272fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 273fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 274fPlaneEff(tracker.fPlaneEff) {
8221b41b 275 //Copy constructor
e50912db 276 Int_t i;
277 for(i=0;i<4;i++) {
278 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
279 }
280 for(i=0;i<6;i++) {
281 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
282 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
283 }
284 for(i=0;i<2;i++) {
285 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
286 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
287 }
8221b41b 288}
44347160 289//------------------------------------------------------------------------
8221b41b 290AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
291 //Assignment operator
292 this->~AliITStrackerMI();
293 new(this) AliITStrackerMI(tracker);
294 return *this;
295}
44347160 296//------------------------------------------------------------------------
628e7bb0 297AliITStrackerMI::~AliITStrackerMI()
298{
299 //
300 //destructor
301 //
e50912db 302 if (fCoefficients) delete [] fCoefficients;
303 DeleteTrksMaterialLUT();
81e97e0d 304 if (fDebugStreamer) {
305 //fDebugStreamer->Close();
306 delete fDebugStreamer;
307 }
23197852 308 if(fITSChannelStatus) delete fITSChannelStatus;
309 if(fPlaneEff) delete fPlaneEff;
e43c066c 310}
44347160 311//------------------------------------------------------------------------
a70ed6ad 312void AliITStrackerMI::SetLayersNotToSkip(const Int_t *l) {
e43c066c 313 //--------------------------------------------------------------------
314 //This function set masks of the layers which must be not skipped
315 //--------------------------------------------------------------------
e50912db 316 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
e43c066c 317}
44347160 318//------------------------------------------------------------------------
23197852 319void AliITStrackerMI::ReadBadFromDetTypeRec() {
320 //--------------------------------------------------------------------
321 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
322 //i.e. from OCDB
323 //--------------------------------------------------------------------
324
325 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
326
4187a601 327 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 328
a70ed6ad 329 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 330
331 // ITS channels map
332 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 333 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 334
335 // ITS detectors and chips
336 Int_t i=0,j=0,k=0,ndet=0;
337 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 338 Int_t nBadDetsPerLayer=0;
23197852 339 ndet=AliITSgeomTGeo::GetNDetectors(i);
340 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
341 for (k=1; k<ndet+1; k++) {
342 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 343 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 344 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 345 } // end loop on detectors
346 } // end loop on ladders
4187a601 347 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 348 } // end loop on layers
349
350 return;
351}
352//------------------------------------------------------------------------
e43c066c 353Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
354 //--------------------------------------------------------------------
355 //This function loads ITS clusters
356 //--------------------------------------------------------------------
00a7cc50 357 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 358 if (!branch) {
359 Error("LoadClusters"," can't get the branch !\n");
360 return 1;
361 }
362
23197852 363 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 364 branch->SetAddress(&clusters);
365
23197852 366 Int_t i=0,j=0,ndet=0;
e43c066c 367 Int_t detector=0;
23197852 368 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
369 ndet=fgLayers[i].GetNdetectors();
e43c066c 370 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
371 for (; j<jmax; j++) {
372 if (!cTree->GetEvent(j)) continue;
373 Int_t ncl=clusters->GetEntriesFast();
374 SignDeltas(clusters,GetZ());
1f3e997f 375
e43c066c 376 while (ncl--) {
00a7cc50 377 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 378 detector=c->GetDetectorIndex();
a504d56f 379
75fb37cc 380 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 381
00a7cc50 382 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 383 }
384 clusters->Delete();
afd25725 385 // add dead zone "virtual" cluster in SPD, if there is a cluster within
386 // zwindow cm from the dead zone
387 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 388 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 389 Int_t lab[4] = {0,0,0,detector};
390 Int_t info[3] = {0,0,i};
6518a6c5 391 Float_t q = 0.; // this identifies virtual clusters
afd25725 392 Float_t hit[5] = {xdead,
393 0.,
394 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
395 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
396 q};
397 Bool_t local = kTRUE;
398 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 399 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 400 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
401 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 402 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 403 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
404 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 405 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 406 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
407 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 408 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 409 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
410 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 411 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 412 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
413 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 414 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 415 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
416 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 417 }
6518a6c5 418 } // "virtual" clusters in SPD
e43c066c 419
420 }
421 //
422 fgLayers[i].ResetRoad(); //road defined by the cluster density
423 fgLayers[i].SortClusters();
424 }
425
23197852 426 dummy.Clear();
427
e43c066c 428 return 0;
429}
44347160 430//------------------------------------------------------------------------
e43c066c 431void AliITStrackerMI::UnloadClusters() {
432 //--------------------------------------------------------------------
433 //This function unloads ITS clusters
434 //--------------------------------------------------------------------
e50912db 435 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 436}
44347160 437//------------------------------------------------------------------------
23197852 438void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
439 //--------------------------------------------------------------------
440 // Publishes all pointers to clusters known to the tracker into the
441 // passed object array.
442 // The ownership is not transfered - the caller is not expected to delete
443 // the clusters.
444 //--------------------------------------------------------------------
445
446 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
447 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
448 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
449 array->AddLast(cl);
450 }
451 }
452
453 return;
454}
455//------------------------------------------------------------------------
44396017 456Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 457 //--------------------------------------------------------------------
458 // Correction for the material between the TPC and the ITS
e43c066c 459 //--------------------------------------------------------------------
e50912db 460 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
463 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
464 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
466 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
467 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 468 } else {
44396017 469 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 470 return 0;
e43c066c 471 }
472
e50912db 473 return 1;
e43c066c 474}
44347160 475//------------------------------------------------------------------------
af885e0f 476Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 477 //--------------------------------------------------------------------
478 // This functions reconstructs ITS tracks
479 // The clusters must be already loaded !
480 //--------------------------------------------------------------------
fddf8459 481
482
e50912db 483 fTrackingPhase="Clusters2Tracks";
484
e43c066c 485 TObjArray itsTracks(15000);
628e7bb0 486 fOriginal.Clear();
81e97e0d 487 fEsd = event; // store pointer to the esd
afd25725 488
9a5326b1 489 // temporary (for cosmics)
490 if(event->GetVertex()) {
491 TString title = event->GetVertex()->GetTitle();
492 if(title.Contains("cosmics")) {
493 Double_t xyz[3]={GetX(),GetY(),GetZ()};
494 Double_t exyz[3]={0.1,0.1,0.1};
495 SetVertex(xyz,exyz);
496 }
497 }
498 // temporary
afd25725 499
e43c066c 500 {/* Read ESD tracks */
afd25725 501 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 502 Int_t nentr=event->GetNumberOfTracks();
503 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
504 while (nentr--) {
505 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 506 // ---- for debugging:
507 //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 508
509 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
510 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
511 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 512 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 513 AliITStrackMI *t=0;
e43c066c 514 try {
15dd636f 515 t=new AliITStrackMI(*esd);
e43c066c 516 } catch (const Char_t *msg) {
628e7bb0 517 //Warning("Clusters2Tracks",msg);
e43c066c 518 delete t;
519 continue;
520 }
b9671574 521 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
522 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 523
524
afd25725 525 // look at the ESD mass hypothesys !
526 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 527 // write expected q
b9671574 528 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 529
afd25725 530 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 531 //track - can be V0 according to TPC
afd25725 532 } else {
533 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 534 delete t;
535 continue;
e50912db 536 }
afd25725 537 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 538 delete t;
539 continue;
540 }
6c23ffed 541 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 542 delete t;
543 continue;
544 }
e50912db 545 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 546 delete t;
547 continue;
548 }
e43c066c 549 }
b9671574 550 t->SetReconstructed(kFALSE);
e43c066c 551 itsTracks.AddLast(t);
628e7bb0 552 fOriginal.AddLast(t);
e43c066c 553 }
554 } /* End Read ESD tracks */
555
556 itsTracks.Sort();
628e7bb0 557 fOriginal.Sort();
e43c066c 558 Int_t nentr=itsTracks.GetEntriesFast();
559 fTrackHypothesys.Expand(nentr);
81e97e0d 560 fBestHypothesys.Expand(nentr);
afd25725 561 MakeCoefficients(nentr);
513ab112 562 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 563 Int_t ntrk=0;
afd25725 564 // THE TWO TRACKING PASSES
e43c066c 565 for (fPass=0; fPass<2; fPass++) {
566 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 567 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 568 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 569 if (t==0) continue; //this track has been already tracked
1c97ce2f 570 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 571 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 572 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 573 if (fConstraint[fPass]) {
574 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
575 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
576 }
e43c066c 577
578 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 579 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 580 fI = 6;
581 ResetTrackToFollow(*t);
582 ResetBestTrack();
6518a6c5 583
e50912db 584 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 585
e43c066c 586
587 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
588 //
ae00569a 589 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 590 if (!besttrack) continue;
591 besttrack->SetLabel(tpcLabel);
592 // besttrack->CookdEdx();
593 CookdEdx(besttrack);
b9671574 594 besttrack->SetFakeRatio(1.);
e43c066c 595 CookLabel(besttrack,0.); //For comparison only
e43c066c 596 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 597
628e7bb0 598 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
599
b9671574 600 t->SetReconstructed(kTRUE);
1c97ce2f 601 ntrk++;
4187a601 602 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 603 }
604 GetBestHypothesysMIP(itsTracks);
afd25725 605 } // end loop on the two tracking passes
e43c066c 606
cd90f0a2 607 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
608 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 609 fAfterV0 = kTRUE;
628e7bb0 610 //
e43c066c 611 itsTracks.Delete();
612 //
613 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 614 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 615 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
616 if (array) array->Delete();
617 delete fTrackHypothesys.RemoveAt(ientry);
618 }
619
620 fTrackHypothesys.Delete();
81e97e0d 621 fBestHypothesys.Delete();
628e7bb0 622 fOriginal.Clear();
afd25725 623 delete [] fCoefficients;
624 fCoefficients=0;
e50912db 625 DeleteTrksMaterialLUT();
626
e43c066c 627 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 628
629 fTrackingPhase="Default";
628e7bb0 630
e43c066c 631 return 0;
632}
44347160 633//------------------------------------------------------------------------
af885e0f 634Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 635 //--------------------------------------------------------------------
636 // This functions propagates reconstructed ITS tracks back
637 // The clusters must be loaded !
638 //--------------------------------------------------------------------
e50912db 639 fTrackingPhase="PropagateBack";
e43c066c 640 Int_t nentr=event->GetNumberOfTracks();
641 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
642
643 Int_t ntrk=0;
644 for (Int_t i=0; i<nentr; i++) {
645 AliESDtrack *esd=event->GetTrack(i);
646
647 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
648 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
649
15dd636f 650 AliITStrackMI *t=0;
e43c066c 651 try {
15dd636f 652 t=new AliITStrackMI(*esd);
e43c066c 653 } catch (const Char_t *msg) {
628e7bb0 654 //Warning("PropagateBack",msg);
e43c066c 655 delete t;
656 continue;
657 }
b9671574 658 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 659
660 ResetTrackToFollow(*t);
67178f34 661 /*
9a5326b1 662 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 663 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 664 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
665 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
666 fTrackToFollow.StartTimeIntegral();
667 // from vertex to outside pipe
668 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 669 }*/
670 // Start time integral and add distance from current position to vertex
671 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
672 fTrackToFollow.GetXYZ(xyzTrk);
673 Double_t dst2 = 0.;
674 for (Int_t icoord=0; icoord<3; icoord++) {
675 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
676 dst2 += di*di;
e43c066c 677 }
67178f34 678 fTrackToFollow.StartTimeIntegral();
679 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 680
6c94f330 681 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 682 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
683 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 684 delete t;
685 continue;
686 }
687 fTrackToFollow.SetLabel(t->GetLabel());
688 //fTrackToFollow.CookdEdx();
689 CookLabel(&fTrackToFollow,0.); //For comparison only
690 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
691 //UseClusters(&fTrackToFollow);
692 ntrk++;
693 }
694 delete t;
695 }
696
697 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
698
e50912db 699 fTrackingPhase="Default";
700
e43c066c 701 return 0;
702}
44347160 703//------------------------------------------------------------------------
af885e0f 704Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 705 //--------------------------------------------------------------------
706 // This functions refits ITS tracks using the
707 // "inward propagated" TPC tracks
708 // The clusters must be loaded !
709 //--------------------------------------------------------------------
e50912db 710 fTrackingPhase="RefitInward";
44396017 711
cd90f0a2 712 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 713
e43c066c 714 Int_t nentr=event->GetNumberOfTracks();
715 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
716
717 Int_t ntrk=0;
718 for (Int_t i=0; i<nentr; i++) {
719 AliESDtrack *esd=event->GetTrack(i);
720
721 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
722 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
723 if (esd->GetStatus()&AliESDtrack::kTPCout)
724 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
725
15dd636f 726 AliITStrackMI *t=0;
e43c066c 727 try {
15dd636f 728 t=new AliITStrackMI(*esd);
e43c066c 729 } catch (const Char_t *msg) {
628e7bb0 730 //Warning("RefitInward",msg);
e43c066c 731 delete t;
732 continue;
733 }
b9671574 734 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 735 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 736 delete t;
737 continue;
738 }
739
740 ResetTrackToFollow(*t);
741 fTrackToFollow.ResetClusters();
742
743 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 744 fTrackToFollow.ResetCovariance(10.);
e43c066c 745
746 //Refitting...
58e8dc31 747 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
748 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 749
4187a601 750 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 751 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 752 AliDebug(2," refit OK");
e43c066c 753 fTrackToFollow.SetLabel(t->GetLabel());
754 // fTrackToFollow.CookdEdx();
755 CookdEdx(&fTrackToFollow);
756
757 CookLabel(&fTrackToFollow,0.0); //For comparison only
758
9a5326b1 759 //The beam pipe
e50912db 760 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 761 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 762 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 763 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
764 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 765 Double_t r[3]={0.,0.,0.};
9a5326b1 766 Double_t maxD=3.;
767 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
768 ntrk++;
e43c066c 769 }
770 }
771 delete t;
772 }
773
774 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
775
e50912db 776 fTrackingPhase="Default";
777
e43c066c 778 return 0;
779}
44347160 780//------------------------------------------------------------------------
e43c066c 781AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
782 //--------------------------------------------------------------------
783 // Return pointer to a given cluster
784 //--------------------------------------------------------------------
785 Int_t l=(index & 0xf0000000) >> 28;
786 Int_t c=(index & 0x0fffffff) >> 00;
787 return fgLayers[l].GetCluster(c);
788}
9a5326b1 789//------------------------------------------------------------------------
df29e9a4 790Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 791 //--------------------------------------------------------------------
df29e9a4 792 // Get track space point with index i
9a5326b1 793 //--------------------------------------------------------------------
60066577 794
78b03929 795 Int_t l=(index & 0xf0000000) >> 28;
796 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 797 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 798 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 799
60066577 800 Float_t xyz[3];
801 Float_t cov[6];
802 cl->GetGlobalXYZ(xyz);
803 cl->GetGlobalCov(cov);
804 p.SetXYZ(xyz, cov);
be77c8c9 805 p.SetCharge(cl->GetQ());
ebbcf1ea 806 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 807 p.SetChargeRatio(cl->GetChargeRatio());
ae079791 808 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 809 switch (l) {
810 case 0:
ae079791 811 iLayer = AliGeomManager::kSPD1;
df29e9a4 812 break;
813 case 1:
ae079791 814 iLayer = AliGeomManager::kSPD2;
df29e9a4 815 break;
816 case 2:
ae079791 817 iLayer = AliGeomManager::kSDD1;
df29e9a4 818 break;
819 case 3:
ae079791 820 iLayer = AliGeomManager::kSDD2;
9a5326b1 821 break;
822 case 4:
823 iLayer = AliGeomManager::kSSD1;
824 break;
825 case 5:
826 iLayer = AliGeomManager::kSSD2;
827 break;
828 default:
829 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
830 break;
831 };
832 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
833 p.SetVolumeID((UShort_t)volid);
834 return kTRUE;
835}
836//------------------------------------------------------------------------
837Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
838 AliTrackPoint& p, const AliESDtrack *t) {
839 //--------------------------------------------------------------------
840 // Get track space point with index i
841 // (assign error estimated during the tracking)
842 //--------------------------------------------------------------------
843
844 Int_t l=(index & 0xf0000000) >> 28;
845 Int_t c=(index & 0x0fffffff) >> 00;
846 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
847 Int_t idet = cl->GetDetectorIndex();
4187a601 848
9a5326b1 849 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
850
851 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
852 Float_t detxy[2];
853 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
854 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
855 Double_t alpha = t->GetAlpha();
856 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 857 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 858 phi += alpha-det.GetPhi();
859 Float_t tgphi = TMath::Tan(phi);
860
861 Float_t tgl = t->GetTgl(); // tgl about const along track
862 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
863
864 Float_t errlocalx,errlocalz;
8c139cf3 865 Bool_t addMisalErr=kFALSE;
866 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz,addMisalErr);
9a5326b1 867
868 Float_t xyz[3];
869 Float_t cov[6];
870 cl->GetGlobalXYZ(xyz);
871 // cl->GetGlobalCov(cov);
872 Float_t pos[3] = {0.,0.,0.};
873 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
874 tmpcl.GetGlobalCov(cov);
875
876 p.SetXYZ(xyz, cov);
be77c8c9 877 p.SetCharge(cl->GetQ());
ebbcf1ea 878 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 879 p.SetChargeRatio(cl->GetChargeRatio());
9a5326b1 880
881 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
882 switch (l) {
883 case 0:
884 iLayer = AliGeomManager::kSPD1;
885 break;
886 case 1:
887 iLayer = AliGeomManager::kSPD2;
888 break;
889 case 2:
890 iLayer = AliGeomManager::kSDD1;
891 break;
892 case 3:
893 iLayer = AliGeomManager::kSDD2;
df29e9a4 894 break;
895 case 4:
ae079791 896 iLayer = AliGeomManager::kSSD1;
df29e9a4 897 break;
898 case 5:
ae079791 899 iLayer = AliGeomManager::kSSD2;
df29e9a4 900 break;
901 default:
902 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
903 break;
904 };
ae079791 905 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 906
df29e9a4 907 p.SetVolumeID((UShort_t)volid);
908 return kTRUE;
909}
44347160 910//------------------------------------------------------------------------
81e97e0d 911void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 912{
913 //--------------------------------------------------------------------
914 // Follow prolongation tree
915 //--------------------------------------------------------------------
81e97e0d 916 //
afd25725 917 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
918 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
919
2755f080 920
b9671574 921 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 922 if (esd->GetV0Index(0)>0) {
81e97e0d 923 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 924 // mapping of ESD track is different as ITS track in Containers
81e97e0d 925 // Need something more stable
44347160 926 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 927 for (Int_t i=0;i<3;i++){
928 Int_t index = esd->GetV0Index(i);
929 if (index==0) break;
d6a49f20 930 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 931 if (vertex->GetStatus()<0) continue; // rejected V0
932 //
afd25725 933 if (esd->GetSign()>0) {
934 vertex->SetIndex(0,esdindex);
935 } else {
936 vertex->SetIndex(1,esdindex);
937 }
81e97e0d 938 }
939 }
940 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
941 if (!bestarray){
942 bestarray = new TObjArray(5);
943 fBestHypothesys.AddAt(bestarray,esdindex);
944 }
e43c066c 945
81e97e0d 946 //
e43c066c 947 //setup tree of the prolongations
948 //
15dd636f 949 static AliITStrackMI tracks[7][100];
950 AliITStrackMI *currenttrack;
951 static AliITStrackMI currenttrack1;
952 static AliITStrackMI currenttrack2;
953 static AliITStrackMI backuptrack;
e43c066c 954 Int_t ntracks[7];
955 Int_t nindexes[7][100];
956 Float_t normalizedchi2[100];
957 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 958 otrack->SetNSkipped(0);
15dd636f 959 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 960 ntracks[6]=1;
81e97e0d 961 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 962 Int_t modstatus = 1; // found
963 Float_t xloc,zloc;
e43c066c 964 //
965 //
966 // follow prolongations
e50912db 967 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 968 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 969 fI = ilayer;
e43c066c 970 //
2755f080 971 AliITSlayer &layer=fgLayers[ilayer];
972 Double_t r = layer.GetR();
e43c066c 973 ntracks[ilayer]=0;
974 //
975 //
2755f080 976 Int_t nskipped=0;
e43c066c 977 Float_t nused =0;
e50912db 978 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 979 //set current track
980 if (ntracks[ilayer]>=100) break;
b9671574 981 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
982 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 983 if (ntracks[ilayer]>15+ilayer){
b9671574 984 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
985 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 986 }
987
15dd636f 988 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 989
afd25725 990 // material between SSD and SDD, SDD and SPD
e50912db 991 if (ilayer==3)
992 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
993 if (ilayer==1)
994 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 995
2755f080 996 // detector number
8602c008 997 Double_t phi,z;
998 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 999 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1000
1001 Double_t trackGlobXYZ1[3];
d1181f10 1002 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1003
2755f080 1004 // Get the budget to the primary vertex for the current track being prolonged
1005 Double_t budgetToPrimVertex = GetEffectiveThickness();
1006
1007 // check if we allow a prolongation without point
6518a6c5 1008 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1009 if (skip) {
1010 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1011 // propagate to the layer radius
d1181f10 1012 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1013 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1014 // apply correction for material of the current layer
1015 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1016 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1017 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1018 vtrack->SetClIndex(ilayer,-1);
ae00569a 1019 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1020 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1021 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1022 }
2755f080 1023 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1024 ntracks[ilayer]++;
6518a6c5 1025 continue;
2755f080 1026 }
1027
1028 // track outside layer acceptance in z
1029 if (idet<0) continue;
1030
1031 //propagate to the intersection with the detector plane
1032 const AliITSdetector &det=layer.GetDetector(idet);
1033 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1034 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1035 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1036 currenttrack1.SetDetectorIndex(idet);
1037 currenttrack2.SetDetectorIndex(idet);
d1181f10 1038 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1039
afd25725 1040 //***************
1c97ce2f 1041 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1042 //
2755f080 1043 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1044 Double_t zmin,zmax,ymin,ymax;
1045 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1046
afd25725 1047 // select clusters in road
e43c066c 1048 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1049 //********************
44347160 1050
afd25725 1051 // Define criteria for track-cluster association
44347160 1052 Double_t msz = currenttrack1.GetSigmaZ2() +
1053 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1054 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1055 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1056 Double_t msy = currenttrack1.GetSigmaY2() +
1057 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1058 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1059 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1060 if (constrain) {
1061 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1062 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1063 } else {
1064 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1065 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1066 }
1067 msz = 1./msz; // 1/RoadZ^2
1068 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1069
e43c066c 1070 //
e43c066c 1071 //
afd25725 1072 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1073 //
afd25725 1074 const AliITSRecPoint *cl=0;
1075 Int_t clidx=-1;
1076 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1077 Bool_t deadzoneSPD=kFALSE;
e43c066c 1078 currenttrack = &currenttrack1;
6518a6c5 1079
ae00569a 1080 // check if the road contains a dead zone
23197852 1081 Bool_t noClusters = kFALSE;
1082 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1083 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1084 Double_t dz=0.5*(zmax-zmin);
1085 Double_t dy=0.5*(ymax-ymin);
1086 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1087 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1088 // create a prolongation without clusters (check also if there are no clusters in the road)
1089 if (dead ||
23197852 1090 (noClusters &&
ae00569a 1091 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1092 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1093 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1094 if (dead==0) {
1095 modstatus = 5; // no cls in road
1096 } else if (dead==1) {
1097 modstatus = 7; // holes in z in SPD
f8720bda 1098 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1099 modstatus = 2; // dead from OCDB
1100 }
1101 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1102 // apply correction for material of the current layer
1103 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1104 if (constrain) { // apply vertex constrain
1105 updatetrack->SetConstrain(constrain);
1106 Bool_t isPrim = kTRUE;
1107 if (ilayer<4) { // check that it's close to the vertex
1108 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1109 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1110 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1111 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1112 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1113 }
1114 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1115 }
f8720bda 1116 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1117 if (dead) {
ae00569a 1118 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1119 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1120 deadzoneSPD=kTRUE;
f8720bda 1121 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1122 updatetrack->SetDeadZoneProbability(ilayer,1.);
1123 } else if (dead==4) { // at least a single dead channel from OCDB
1124 updatetrack->SetDeadZoneProbability(ilayer,0.);
1125 }
6518a6c5 1126 }
1127 ntracks[ilayer]++;
1128 }
1129
ae00569a 1130 clidx=-1;
6518a6c5 1131 // loop over clusters in the road
afd25725 1132 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1133 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1134 Bool_t changedet =kFALSE;
6518a6c5 1135 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1136 Int_t idetc=cl->GetDetectorIndex();
afd25725 1137
a5d0fae6 1138 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1139 // take into account misalignment (bring track to real detector plane)
1140 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1141 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1142 // a first cut on track-cluster distance
1143 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1144 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1145 { // cluster not associated to track
4187a601 1146 AliDebug(2,"not associated");
1c97ce2f 1147 continue;
1148 }
1149 // bring track back to ideal detector plane
9be1d1c7 1150 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1151 } else { // have to move track to cluster's detector
a5d0fae6 1152 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1153 // a first cut on track-cluster distance
a5d0fae6 1154 Double_t y;
1c97ce2f 1155 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1156 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1157 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1158 continue; // cluster not associated to track
e43c066c 1159 //
15dd636f 1160 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1161 changedet = kTRUE;
e43c066c 1162 currenttrack =&currenttrack2;
a5d0fae6 1163 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1164 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1165 changedet = kFALSE;
e43c066c 1166 continue;
1167 }
a5d0fae6 1168 currenttrack->SetDetectorIndex(idetc);
e50912db 1169 // Get again the budget to the primary vertex
1170 // for the current track being prolonged, if had to change detector
1171 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1172 }
1173
afd25725 1174 // calculate track-clusters chi2
1175 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1176 // chi2 cut
4187a601 1177 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1178 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1179 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1180 if (ntracks[ilayer]>=100) continue;
15dd636f 1181 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1182 updatetrack->SetClIndex(ilayer,-1);
afd25725 1183 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1184
6518a6c5 1185 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1186 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1187 AliDebug(2,"update failed");
1c97ce2f 1188 continue;
1189 }
09cf9d66 1190 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1191 modstatus = 1; // found
6518a6c5 1192 } else { // virtual cluster in dead zone
b9671574 1193 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1194 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1195 modstatus = 7; // holes in z in SPD
1196 }
1197
1198 if (changedet) {
1199 Float_t xlocnewdet,zlocnewdet;
d1181f10 1200 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1201 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1202 }
ae00569a 1203 } else {
1204 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1205 }
afd25725 1206 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1207
1208 // apply correction for material of the current layer
e50912db 1209 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1210
afd25725 1211 if (constrain) { // apply vertex constrain
b9671574 1212 updatetrack->SetConstrain(constrain);
e43c066c 1213 Bool_t isPrim = kTRUE;
afd25725 1214 if (ilayer<4) { // check that it's close to the vertex
b9671574 1215 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1216 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1217 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1218 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1219 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1220 }
afd25725 1221 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1222 } //apply vertex constrain
1223 ntracks[ilayer]++;
afd25725 1224 } // create new hypothesis
4187a601 1225 else {
1226 AliDebug(2,"chi2 too large");
1227 }
1228
2755f080 1229 } // loop over possible prolongations
1230
1231 // allow one prolongation without clusters
6518a6c5 1232 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1233 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1234 // apply correction for material of the current layer
1235 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1236 vtrack->SetClIndex(ilayer,-1);
ae00569a 1237 modstatus = 3; // skipped
1238 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1239 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1240 vtrack->IncrementNSkipped();
e43c066c 1241 ntracks[ilayer]++;
1242 }
628e7bb0 1243
2755f080 1244 // allow one prolongation without clusters for tracks with |tgl|>1.1
1245 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1246 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1247 // apply correction for material of the current layer
1248 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1249 vtrack->SetClIndex(ilayer,-1);
ae00569a 1250 modstatus = 3; // skipped
1251 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1252 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1253 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1254 ntracks[ilayer]++;
1255 }
1256
e43c066c 1257
e50912db 1258 } // loop over tracks in layer ilayer+1
afd25725 1259
1260 //loop over track candidates for the current layer
e43c066c 1261 //
1262 //
1263 Int_t accepted=0;
1264
afd25725 1265 Int_t golden=0;
e43c066c 1266 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1267 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1268 if (normalizedchi2[itrack] <
1269 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1270 if (ilayer>4) {
1271 accepted++;
1272 } else {
1273 if (constrain) { // constrain
afd25725 1274 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1275 accepted++;
44347160 1276 } else { // !constrain
afd25725 1277 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1278 accepted++;
44347160 1279 }
e43c066c 1280 }
1281 }
afd25725 1282 // sort tracks by increasing normalized chi2
1283 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1284 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1285 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1286 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1287 } // end loop over layers
1288
afd25725 1289
1290 //
1291 // Now select tracks to be kept
1292 //
44347160 1293 Int_t max = constrain ? 20 : 5;
e43c066c 1294
afd25725 1295 // tracks that reach layer 0 (SPD inner)
44347160 1296 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1297 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1298 if (track.GetNumberOfClusters()<2) continue;
afd25725 1299 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1300 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1301 continue;
1302 }
15dd636f 1303 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1304 }
afd25725 1305
1306 // tracks that reach layer 1 (SPD outer)
628e7bb0 1307 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1308 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1309 if (track.GetNumberOfClusters()<4) continue;
afd25725 1310 if (!constrain && track.GetNormChi2(1) >
1311 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1312 if (constrain) track.IncrementNSkipped();
81e97e0d 1313 if (!constrain) {
b9671574 1314 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1315 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1316 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1317 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1318 }
1319 }
15dd636f 1320 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1321 }
afd25725 1322
6518a6c5 1323 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1324 if (!constrain){
628e7bb0 1325 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1326 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1327 if (track.GetNumberOfClusters()<3) continue;
afd25725 1328 if (!constrain && track.GetNormChi2(2) >
1329 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1330 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1331 if (!constrain){
b9671574 1332 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1333 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1334 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1335 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1336 }
1337 }
15dd636f 1338 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1339 }
1340 }
81e97e0d 1341
afd25725 1342 if (!constrain) {
81e97e0d 1343 //
afd25725 1344 // register best track of each layer - important for V0 finder
81e97e0d 1345 //
1346 for (Int_t ilayer=0;ilayer<5;ilayer++){
1347 if (ntracks[ilayer]==0) continue;
1348 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1349 if (track.GetNumberOfClusters()<1) continue;
1350 CookLabel(&track,0);
1351 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1352 }
1353 }
1354 //
1355 // update TPC V0 information
1356 //
b9671574 1357 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1358 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1359 for (Int_t i=0;i<3;i++){
b9671574 1360 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1361 if (index==0) break;
44347160 1362 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1363 if (vertex->GetStatus()<0) continue; // rejected V0
1364 //
6c94f330 1365 if (otrack->GetSign()>0) {
81e97e0d 1366 vertex->SetIndex(0,esdindex);
1367 }
1368 else{
1369 vertex->SetIndex(1,esdindex);
1370 }
1371 //find nearest layer with track info
b75d63a7 1372 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1373 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1374 Int_t nearest = nearestold;
1375 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1376 if (ntracks[nearest]==0){
1377 nearest = ilayer;
1378 }
1379 }
1380 //
1381 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1382 if (nearestold<5&&nearest<5){
b9671574 1383 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1384 if (accept){
6c94f330 1385 if (track.GetSign()>0) {
b75d63a7 1386 vertex->SetParamP(track);
81e97e0d 1387 vertex->Update(fprimvertex);
44347160 1388 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1389 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1390 }else{
b75d63a7 1391 vertex->SetParamN(track);
81e97e0d 1392 vertex->Update(fprimvertex);
1393 //vertex->SetIndex(1,track.fESDtrack->GetID());
1394 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1395 }
1396 vertex->SetStatus(vertex->GetStatus()+1);
1397 }else{
44347160 1398 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1399 }
1400 }
81e97e0d 1401 }
afd25725 1402 }
1403
e43c066c 1404}
44347160 1405//------------------------------------------------------------------------
e43c066c 1406AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1407{
1408 //--------------------------------------------------------------------
1409 //
1410 //
1411 return fgLayers[layer];
1412}
44347160 1413//------------------------------------------------------------------------
8221b41b 1414AliITStrackerMI::AliITSlayer::AliITSlayer():
1415fR(0),
1416fPhiOffset(0),
1417fNladders(0),
1418fZOffset(0),
1419fNdetectors(0),
1420fDetectors(0),
1421fN(0),
1422fDy5(0),
1423fDy10(0),
1424fDy20(0),
1425fClustersCs(0),
1426fClusterIndexCs(0),
1427fYcs(0),
1428fZcs(0),
1429fNcs(0),
1430fCurrentSlice(-1),
1431fZmax(0),
1432fYmin(0),
1433fYmax(0),
1434fI(0),
1435fImax(0),
1436fSkip(0),
1437fAccepted(0),
1438fRoad(0){
e43c066c 1439 //--------------------------------------------------------------------
1440 //default AliITSlayer constructor
1441 //--------------------------------------------------------------------
e50912db 1442 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1443 fClusterWeight[i]=0;
1444 fClusterTracks[0][i]=-1;
1445 fClusterTracks[1][i]=-1;
1446 fClusterTracks[2][i]=-1;
1447 fClusterTracks[3][i]=-1;
1448 }
1449}
44347160 1450//------------------------------------------------------------------------
e43c066c 1451AliITStrackerMI::AliITSlayer::
8221b41b 1452AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1453fR(r),
1454fPhiOffset(p),
1455fNladders(nl),
1456fZOffset(z),
1457fNdetectors(nd),
1458fDetectors(0),
1459fN(0),
1460fDy5(0),
1461fDy10(0),
1462fDy20(0),
1463fClustersCs(0),
1464fClusterIndexCs(0),
1465fYcs(0),
1466fZcs(0),
1467fNcs(0),
1468fCurrentSlice(-1),
1469fZmax(0),
1470fYmin(0),
1471fYmax(0),
1472fI(0),
1473fImax(0),
1474fSkip(0),
1475fAccepted(0),
1476fRoad(0) {
e43c066c 1477 //--------------------------------------------------------------------
1478 //main AliITSlayer constructor
1479 //--------------------------------------------------------------------
e43c066c 1480 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1481 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1482}
44347160 1483//------------------------------------------------------------------------
8221b41b 1484AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1485fR(layer.fR),
1486fPhiOffset(layer.fPhiOffset),
1487fNladders(layer.fNladders),
1488fZOffset(layer.fZOffset),
1489fNdetectors(layer.fNdetectors),
1490fDetectors(layer.fDetectors),
1491fN(layer.fN),
1492fDy5(layer.fDy5),
1493fDy10(layer.fDy10),
1494fDy20(layer.fDy20),
1495fClustersCs(layer.fClustersCs),
1496fClusterIndexCs(layer.fClusterIndexCs),
1497fYcs(layer.fYcs),
1498fZcs(layer.fZcs),
1499fNcs(layer.fNcs),
1500fCurrentSlice(layer.fCurrentSlice),
1501fZmax(layer.fZmax),
1502fYmin(layer.fYmin),
1503fYmax(layer.fYmax),
1504fI(layer.fI),
1505fImax(layer.fImax),
1506fSkip(layer.fSkip),
1507fAccepted(layer.fAccepted),
1508fRoad(layer.fRoad){
1509 //Copy constructor
1510}
44347160 1511//------------------------------------------------------------------------
e43c066c 1512AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1513 //--------------------------------------------------------------------
1514 // AliITSlayer destructor
1515 //--------------------------------------------------------------------
23197852 1516 delete [] fDetectors;
e43c066c 1517 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1518 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1519 fClusterWeight[i]=0;
1520 fClusterTracks[0][i]=-1;
1521 fClusterTracks[1][i]=-1;
1522 fClusterTracks[2][i]=-1;
1523 fClusterTracks[3][i]=-1;
1524 }
1525}
44347160 1526//------------------------------------------------------------------------
e43c066c 1527void AliITStrackerMI::AliITSlayer::ResetClusters() {
1528 //--------------------------------------------------------------------
1529 // This function removes loaded clusters
1530 //--------------------------------------------------------------------
1531 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1532 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1533 fClusterWeight[i]=0;
1534 fClusterTracks[0][i]=-1;
1535 fClusterTracks[1][i]=-1;
1536 fClusterTracks[2][i]=-1;
1537 fClusterTracks[3][i]=-1;
1538 }
1539
1540 fN=0;
1541 fI=0;
1542}
44347160 1543//------------------------------------------------------------------------
e43c066c 1544void AliITStrackerMI::AliITSlayer::ResetWeights() {
1545 //--------------------------------------------------------------------
1546 // This function reset weights of the clusters
1547 //--------------------------------------------------------------------
e50912db 1548 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1549 fClusterWeight[i]=0;
1550 fClusterTracks[0][i]=-1;
1551 fClusterTracks[1][i]=-1;
1552 fClusterTracks[2][i]=-1;
1553 fClusterTracks[3][i]=-1;
1554 }
1555 for (Int_t i=0; i<fN;i++) {
00a7cc50 1556 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1557 if (cl&&cl->IsUsed()) cl->Use();
1558 }
1559
1560}
44347160 1561//------------------------------------------------------------------------
e43c066c 1562void AliITStrackerMI::AliITSlayer::ResetRoad() {
1563 //--------------------------------------------------------------------
1564 // This function calculates the road defined by the cluster density
1565 //--------------------------------------------------------------------
1566 Int_t n=0;
1567 for (Int_t i=0; i<fN; i++) {
1568 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1569 }
afd25725 1570 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1571}
44347160 1572//------------------------------------------------------------------------
afd25725 1573Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1574 //--------------------------------------------------------------------
1575 //This function adds a cluster to this layer
1576 //--------------------------------------------------------------------
e50912db 1577 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1578 ::Error("InsertCluster","Too many clusters !\n");
1579 return 1;
1580 }
1581 fCurrentSlice=-1;
afd25725 1582 fClusters[fN]=cl;
1d4090b7 1583 fN++;
afd25725 1584 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1585 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1586 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1587 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1588 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1589
1590 return 0;
1591}
44347160 1592//------------------------------------------------------------------------
e43c066c 1593void AliITStrackerMI::AliITSlayer::SortClusters()
1594{
1595 //
1596 //sort clusters
1597 //
00a7cc50 1598 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1599 Float_t *z = new Float_t[fN];
1600 Int_t * index = new Int_t[fN];
1601 //
1602 for (Int_t i=0;i<fN;i++){
1603 z[i] = fClusters[i]->GetZ();
1604 }
1605 TMath::Sort(fN,z,index,kFALSE);
1606 for (Int_t i=0;i<fN;i++){
1607 clusters[i] = fClusters[index[i]];
1608 }
1609 //
1610 for (Int_t i=0;i<fN;i++){
1611 fClusters[i] = clusters[i];
1612 fZ[i] = fClusters[i]->GetZ();
1613 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1614 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1615 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1616 fY[i] = y;
1617 }
1618 delete[] index;
1619 delete[] z;
1620 delete[] clusters;
1621 //
1622
e43c066c 1623 fYB[0]=10000000;
1624 fYB[1]=-10000000;
1625 for (Int_t i=0;i<fN;i++){
1626 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1627 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1628 fClusterIndex[i] = i;
1629 }
1630 //
1631 // fill slices
1632 fDy5 = (fYB[1]-fYB[0])/5.;
1633 fDy10 = (fYB[1]-fYB[0])/10.;
1634 fDy20 = (fYB[1]-fYB[0])/20.;
1635 for (Int_t i=0;i<6;i++) fN5[i] =0;
1636 for (Int_t i=0;i<11;i++) fN10[i]=0;
1637 for (Int_t i=0;i<21;i++) fN20[i]=0;
1638 //
1639 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;}
1640 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;}
1641 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;}
1642 //
1643 //
1d4090b7 1644 for (Int_t i=0;i<fN;i++)
1645 for (Int_t irot=-1;irot<=1;irot++){
1646 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1647 // slice 5
1648 for (Int_t slice=0; slice<6;slice++){
e50912db 1649 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1650 fClusters5[slice][fN5[slice]] = fClusters[i];
1651 fY5[slice][fN5[slice]] = curY;
1652 fZ5[slice][fN5[slice]] = fZ[i];
1653 fClusterIndex5[slice][fN5[slice]]=i;
1654 fN5[slice]++;
1655 }
e43c066c 1656 }
1d4090b7 1657 // slice 10
1658 for (Int_t slice=0; slice<11;slice++){
e50912db 1659 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1660 fClusters10[slice][fN10[slice]] = fClusters[i];
1661 fY10[slice][fN10[slice]] = curY;
1662 fZ10[slice][fN10[slice]] = fZ[i];
1663 fClusterIndex10[slice][fN10[slice]]=i;
1664 fN10[slice]++;
1665 }
e43c066c 1666 }
1d4090b7 1667 // slice 20
1668 for (Int_t slice=0; slice<21;slice++){
e50912db 1669 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1670 fClusters20[slice][fN20[slice]] = fClusters[i];
1671 fY20[slice][fN20[slice]] = curY;
1672 fZ20[slice][fN20[slice]] = fZ[i];
1673 fClusterIndex20[slice][fN20[slice]]=i;
1674 fN20[slice]++;
1675 }
1676 }
e43c066c 1677 }
1d4090b7 1678
1679 //
1680 // consistency check
1681 //
1682 for (Int_t i=0;i<fN-1;i++){
1683 if (fZ[i]>fZ[i+1]){
ae00569a 1684 printf("Bug\n");
e43c066c 1685 }
1686 }
1d4090b7 1687 //
1688 for (Int_t slice=0;slice<21;slice++)
1689 for (Int_t i=0;i<fN20[slice]-1;i++){
1690 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1691 printf("Bug\n");
1d4090b7 1692 }
1693 }
1694
1695
e43c066c 1696}
44347160 1697//------------------------------------------------------------------------
e43c066c 1698Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1699 //--------------------------------------------------------------------
1700 // This function returns the index of the nearest cluster
1701 //--------------------------------------------------------------------
1702 Int_t ncl=0;
1703 const Float_t *zcl;
1704 if (fCurrentSlice<0) {
1705 ncl = fN;
1706 zcl = fZ;
1707 }
1708 else{
1709 ncl = fNcs;
1710 zcl = fZcs;;
1711 }
1712
1713 if (ncl==0) return 0;
1714 Int_t b=0, e=ncl-1, m=(b+e)/2;
1715 for (; b<e; m=(b+e)/2) {
1716 // if (z > fClusters[m]->GetZ()) b=m+1;
1717 if (z > zcl[m]) b=m+1;
1718 else e=m;
1719 }
1720 return m;
1721}
44347160 1722//------------------------------------------------------------------------
1c97ce2f 1723Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1724 //--------------------------------------------------------------------
1725 // This function computes the rectangular road for this track
1726 //--------------------------------------------------------------------
1727
1728
1729 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1730 // take into account the misalignment: propagate track to misaligned detector plane
1731 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1732
1733 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1734 TMath::Sqrt(track->GetSigmaZ2() +
1735 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1736 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1737 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1738 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1739 TMath::Sqrt(track->GetSigmaY2() +
1740 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1741 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1742 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1743
1744 // track at boundary between detectors, enlarge road
1745 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1746 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1747 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1748 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1749 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1750 Float_t tgl = TMath::Abs(track->GetTgl());
1751 if (tgl > 1.) tgl=1.;
1752 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1753 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1754 Float_t snp = TMath::Abs(track->GetSnp());
1755 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1756 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1757 } // boundary
1758
1759 // add to the road a term (up to 2-3 mm) to deal with misalignments
1760 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1761 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1762
1763 Double_t r = fgLayers[ilayer].GetR();
1764 zmin = track->GetZ() - dz;
1765 zmax = track->GetZ() + dz;
1766 ymin = track->GetY() + r*det.GetPhi() - dy;
1767 ymax = track->GetY() + r*det.GetPhi() + dy;
1768
1769 // bring track back to idead detector plane
1770 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1771
1772 return kTRUE;
1773}
1774//------------------------------------------------------------------------
e43c066c 1775void AliITStrackerMI::AliITSlayer::
1776SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1777 //--------------------------------------------------------------------
1778 // This function sets the "window"
1779 //--------------------------------------------------------------------
1780
628e7bb0 1781 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1782 fYmin = ymin; fYmax =ymax;
1783 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1784 if (ymiddle<fYB[0]) {
1785 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1786 } else if (ymiddle>fYB[1]) {
1787 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1788 }
ae00569a 1789
e43c066c 1790 //
1791 fCurrentSlice =-1;
1792 // defualt take all
1793 fClustersCs = fClusters;
1794 fClusterIndexCs = fClusterIndex;
1795 fYcs = fY;
1796 fZcs = fZ;
1797 fNcs = fN;
628e7bb0 1798 //
e43c066c 1799 //is in 20 slice?
1800 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1801 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1802 if (slice<0) slice=0;
1803 if (slice>20) slice=20;
1804 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1805 if (isOK) {
1806 fCurrentSlice=slice;
1807 fClustersCs = fClusters20[fCurrentSlice];
1808 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1809 fYcs = fY20[fCurrentSlice];
1810 fZcs = fZ20[fCurrentSlice];
1811 fNcs = fN20[fCurrentSlice];
1812 }
1813 }
1814 //
1815 //is in 10 slice?
1816 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1817 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1818 if (slice<0) slice=0;
1819 if (slice>10) slice=10;
1820 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1821 if (isOK) {
1822 fCurrentSlice=slice;
1823 fClustersCs = fClusters10[fCurrentSlice];
1824 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1825 fYcs = fY10[fCurrentSlice];
1826 fZcs = fZ10[fCurrentSlice];
1827 fNcs = fN10[fCurrentSlice];
1828 }
1829 }
1830 //
1831 //is in 5 slice?
1832 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1833 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1834 if (slice<0) slice=0;
1835 if (slice>5) slice=5;
1836 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1837 if (isOK) {
e43c066c 1838 fCurrentSlice=slice;
1839 fClustersCs = fClusters5[fCurrentSlice];
1840 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1841 fYcs = fY5[fCurrentSlice];
1842 fZcs = fZ5[fCurrentSlice];
1843 fNcs = fN5[fCurrentSlice];
1844 }
1845 }
628e7bb0 1846 //
e43c066c 1847 fI=FindClusterIndex(zmin); fZmax=zmax;
1848 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1849 fSkip = 0;
1850 fAccepted =0;
6518a6c5 1851
1852 return;
e43c066c 1853}
44347160 1854//------------------------------------------------------------------------
628e7bb0 1855Int_t AliITStrackerMI::AliITSlayer::
1856FindDetectorIndex(Double_t phi, Double_t z) const {
1857 //--------------------------------------------------------------------
1858 //This function finds the detector crossed by the track
1859 //--------------------------------------------------------------------
31fb8575 1860 Double_t dphi;
1861 if (fZOffset<0) // old geometry
1862 dphi = -(phi-fPhiOffset);
1863 else // new geometry
1864 dphi = phi-fPhiOffset;
1865
6518a6c5 1866
628e7bb0 1867 if (dphi < 0) dphi += 2*TMath::Pi();
1868 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1869 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1870 if (np>=fNladders) np-=fNladders;
1871 if (np<0) np+=fNladders;
1872
6518a6c5 1873
628e7bb0 1874 Double_t dz=fZOffset-z;
6518a6c5 1875 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1876 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1877 if (nz>=fNdetectors) return -1;
1878 if (nz<0) return -1;
1879
23197852 1880 // ad hoc correction for 3rd ladder of SDD inner layer,
1881 // which is reversed (rotated by pi around local y)
1882 // this correction is OK only from AliITSv11Hybrid onwards
1883 if (GetR()>12. && GetR()<20.) { // SDD inner
1884 if(np==2) { // 3rd ladder
1885 nz = (fNdetectors-1) - nz;
1886 }
1887 }
1888 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1889
1890
628e7bb0 1891 return np*fNdetectors + nz;
1892}
44347160 1893//------------------------------------------------------------------------
ae00569a 1894const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1895{
e43c066c 1896 //--------------------------------------------------------------------
1897 // This function returns clusters within the "window"
1898 //--------------------------------------------------------------------
1899
ae00569a 1900 if (fCurrentSlice<0) {
e43c066c 1901 Double_t rpi2 = 2.*fR*TMath::Pi();
1902 for (Int_t i=fI; i<fImax; i++) {
1903 Double_t y = fY[i];
1904 if (fYmax<y) y -= rpi2;
1d4090b7 1905 if (fYmin>y) y += rpi2;
e43c066c 1906 if (y<fYmin) continue;
1907 if (y>fYmax) continue;
1908 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1909 ci=i;
ae00569a 1910 if (!test) fI=i+1;
e43c066c 1911 return fClusters[i];
1912 }
ae00569a 1913 } else {
e43c066c 1914 for (Int_t i=fI; i<fImax; i++) {
1915 if (fYcs[i]<fYmin) continue;
1916 if (fYcs[i]>fYmax) continue;
1917 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1918 ci=fClusterIndexCs[i];
ae00569a 1919 if (!test) fI=i+1;
e43c066c 1920 return fClustersCs[i];
1921 }
1922 }
1923 return 0;
1924}
44347160 1925//------------------------------------------------------------------------
e43c066c 1926Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1927const {
1928 //--------------------------------------------------------------------
afd25725 1929 // This function returns the layer thickness at this point (units X0)
e43c066c 1930 //--------------------------------------------------------------------
1931 Double_t d=0.0085;
e50912db 1932 x0=AliITSRecoParam::GetX0Air();
e43c066c 1933 if (43<fR&&fR<45) { //SSD2
1934 Double_t dd=0.0034;
1935 d=dd;
1936 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1937 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1938 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1939 for (Int_t i=0; i<12; i++) {
1940 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1941 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1942 d+=0.0034;
1943 break;
1944 }
1945 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1946 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1947 d+=0.0034;
1948 break;
1949 }
1950 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1951 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1952 }
1953 } else
1954 if (37<fR&&fR<41) { //SSD1
1955 Double_t dd=0.0034;
1956 d=dd;
1957 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1958 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1959 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1960 for (Int_t i=0; i<11; i++) {
1961 if (TMath::Abs(z-3.9*i)<0.15) {
1962 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1963 d+=dd;
1964 break;
1965 }
1966 if (TMath::Abs(z+3.9*i)<0.15) {
1967 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1968 d+=dd;
1969 break;
1970 }
1971 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1972 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1973 }
1974 } else
1975 if (13<fR&&fR<26) { //SDD
1976 Double_t dd=0.0033;
1977 d=dd;
1978 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1979
1980 if (TMath::Abs(y-1.80)<0.55) {
1981 d+=0.016;
1982 for (Int_t j=0; j<20; j++) {
1983 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1984 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1985 }
1986 }
1987 if (TMath::Abs(y+1.80)<0.55) {
1988 d+=0.016;
1989 for (Int_t j=0; j<20; j++) {
1990 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1991 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1992 }
1993 }
1994
1995 for (Int_t i=0; i<4; i++) {
1996 if (TMath::Abs(z-7.3*i)<0.60) {
1997 d+=dd;
1998 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1999 break;
2000 }
2001 if (TMath::Abs(z+7.3*i)<0.60) {
2002 d+=dd;
2003 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2004 break;
2005 }
2006 }
2007 } else
2008 if (6<fR&&fR<8) { //SPD2
2009 Double_t dd=0.0063; x0=21.5;
2010 d=dd;
2011 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2012 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2013 } else
2014 if (3<fR&&fR<5) { //SPD1
2015 Double_t dd=0.0063; x0=21.5;
2016 d=dd;
2017 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2018 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2019 }
2020
2021 return d;
2022}
44347160 2023//------------------------------------------------------------------------
23197852 2024AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2025fR(det.fR),
1c97ce2f 2026fRmisal(det.fRmisal),
23197852 2027fPhi(det.fPhi),
2028fSinPhi(det.fSinPhi),
2029fCosPhi(det.fCosPhi),
2030fYmin(det.fYmin),
2031fYmax(det.fYmax),
2032fZmin(det.fZmin),
2033fZmax(det.fZmax),
2034fIsBad(det.fIsBad),
2035fNChips(det.fNChips),
2036fChipIsBad(det.fChipIsBad)
2037{
2038 //Copy constructor
2039}
2040//------------------------------------------------------------------------
2041void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2042 const AliITSDetTypeRec *detTypeRec)
23197852 2043{
2044 //--------------------------------------------------------------------
2045 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2046 //--------------------------------------------------------------------
2047
2048 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2049 // while in the tracker they start from 0 for each layer
2050 for(Int_t il=0; il<ilayer; il++)
2051 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2052
2053 Int_t detType;
2054 if (ilayer==0 || ilayer==1) { // ---------- SPD
2055 detType = 0;
2056 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2057 detType = 1;
2058 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2059 detType = 2;
2060 } else {
2061 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2062 return;
2063 }
2064
2065 // Get calibration from AliITSDetTypeRec
2066 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2067 calib->SetModuleIndex(idet);
23197852 2068 AliITSCalibration *calibSPDdead = 0;
2069 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2070 if (calib->IsBad() ||
2071 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2072 {
2073 SetBad();
359ac74d 2074 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2075 }
2076
2077 // Get segmentation from AliITSDetTypeRec
2078 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2079
2080 // Read info about bad chips
2081 fNChips = segm->GetMaximumChipIndex()+1;
2082 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2083 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2084 fChipIsBad = new Bool_t[fNChips];
2085 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2086 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2087 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2088 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2089 }
2090
2091 return;
2092}
2093//------------------------------------------------------------------------
e50912db 2094Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2095{
2096 //--------------------------------------------------------------------
afd25725 2097 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2098 //--------------------------------------------------------------------
e43c066c 2099
e50912db 2100 if(fUseTGeo!=0) {
2101 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2102 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2103 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2104 }
2105
afd25725 2106 // beam pipe
e50912db 2107 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2108 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2109
2110 // layers
2111 Double_t x0=0;
e43c066c 2112 Double_t xn=fgLayers[fI].GetR();
2113 for (Int_t i=0; i<fI; i++) {
2114 Double_t xi=fgLayers[i].GetR();
e50912db 2115 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2116 d+=dLayer*xi*xi;
e43c066c 2117 }
2118
afd25725 2119 // shields
e43c066c 2120 if (fI>1) {
e50912db 2121 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2122 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2123 }
e43c066c 2124 if (fI>3) {
e50912db 2125 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2126 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2127 }
e43c066c 2128 return d/(xn*xn);
2129}
44347160 2130//------------------------------------------------------------------------
e43c066c 2131Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2132 //-------------------------------------------------------------------
e43c066c 2133 // This function returns number of clusters within the "window"
2134 //--------------------------------------------------------------------
2135 Int_t ncl=0;
2136 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2137 const AliITSRecPoint *c=fClusters[i];
e43c066c 2138 if (c->GetZ() > fZmax) break;
2139 if (c->IsUsed()) continue;
2140 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2141 Double_t y=fR*det.GetPhi() + c->GetY();
2142
2143 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2144 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2145
2146 if (y<fYmin) continue;
2147 if (y>fYmax) continue;
2148 ncl++;
2149 }
2150 return ncl;
2151}
44347160 2152//------------------------------------------------------------------------
ae00569a 2153Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2154 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2155{
e43c066c 2156 //--------------------------------------------------------------------
ae00569a 2157 // This function refits the track "track" at the position "x" using
2158 // the clusters from "clusters"
ef7253ac 2159 // If "extra"==kTRUE,
ae00569a 2160 // the clusters from overlapped modules get attached to "track"
7167ae53 2161 // If "planeff"==kTRUE,
2162 // special approach for plane efficiency evaluation is applyed
e43c066c 2163 //--------------------------------------------------------------------
6518a6c5 2164
e50912db 2165 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2166 Int_t k;
e50912db 2167 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2168 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2169 for (k=0; k<nc; k++) {
ae00569a 2170 Int_t idx=clusters->GetClusterIndex(k);
2171 Int_t ilayer=(idx&0xf0000000)>>28;
2172 index[ilayer]=idx;
e43c066c 2173 }
67c1e979 2174
7167ae53 2175 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2176}
44347160 2177//------------------------------------------------------------------------
ae00569a 2178Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2179 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2180{
67c1e979 2181 //--------------------------------------------------------------------
ae00569a 2182 // This function refits the track "track" at the position "x" using
67c1e979 2183 // the clusters from array
ae00569a 2184 // If "extra"==kTRUE,
2185 // the clusters from overlapped modules get attached to "track"
7167ae53 2186 // If "planeff"==kTRUE,
2187 // special approach for plane efficiency evaluation is applyed
67c1e979 2188 //--------------------------------------------------------------------
e50912db 2189 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2190 Int_t k;
e50912db 2191 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2192 //
e50912db 2193 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2194 index[k]=clusters[k];
67c1e979 2195 }
2196
afd25725 2197 // special for cosmics: check which the innermost layer crossed
2198 // by the track
2199 Int_t innermostlayer=5;
ae00569a 2200 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2201 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2202 if(drphi < fgLayers[innermostlayer].GetR()) break;
2203 }
2204 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2205
ae00569a 2206 Int_t modstatus=1; // found
2207 Float_t xloc,zloc;
67c1e979 2208 Int_t from, to, step;
ae00569a 2209 if (xx > track->GetX()) {
e50912db 2210 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2211 step=+1;
2212 } else {
e50912db 2213 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2214 step=-1;
2215 }
ae00569a 2216 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2217
ae00569a 2218 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2219 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2220 Double_t r=layer.GetR();
afd25725 2221 if (step<0 && xx>r) break;
2222
2223 // material between SSD and SDD, SDD and SPD
6518a6c5 2224 Double_t hI=ilayer-0.5*step;
e50912db 2225 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2226 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2227 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2228 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2229
ae00569a 2230
afd25725 2231 Double_t oldGlobXYZ[3];
d1181f10 2232 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2233
67178f34 2234 // continue if we are already beyond this layer
2235 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2236 if(step>0 && oldGlobR > r) continue; // going outward
2237 if(step<0 && oldGlobR < r) continue; // going inward
2238
8602c008 2239 Double_t phi,z;
ae00569a 2240 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2241
67c1e979 2242 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2243
2244 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2245 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2246 if (skip==2) {
ae00569a 2247 modstatus = 4; // out in z
d1181f10 2248 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2249 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2250 }
7131593b 2251 // cross layer
2252 // apply correction for material of the current layer
2253 // add time if going outward
2254 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2255 continue;
2256 }
2257
e50912db 2258 if (idet<0) return kFALSE;
ae00569a 2259
67c1e979 2260 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2261 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2262
ae00569a 2263 track->SetDetectorIndex(idet);
d1181f10 2264 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2265
23197852 2266 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2267
2268 const AliITSRecPoint *clAcc=0;
44347160 2269 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2270
6518a6c5 2271 Int_t idx=index[ilayer];
ae00569a 2272 if (idx>=0) { // cluster in this layer
2273 modstatus = 6; // no refit
2274 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2275 if (cl) {
2276 if (idet != cl->GetDetectorIndex()) {
2277 idet=cl->GetDetectorIndex();
a5d0fae6 2278 const AliITSdetector &detc=layer.GetDetector(idet);
2279 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2280 track->SetDetectorIndex(idet);
d1181f10 2281 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2282 }
ae00569a 2283 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2284 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2285 if (chi2<maxchi2) {
2286 clAcc=cl;
2287 maxchi2=chi2;
2288 modstatus = 1; // found
2289 } else {
7167ae53 2290 return kFALSE; //
ae00569a 2291 }
2292 }
2293 } else { // no cluster in this layer
2294 if (skip==1) {
2295 modstatus = 3; // skipped
0ed58a47 2296 // Plane Eff determination:
2297 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2298 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2299 UseTrackForPlaneEff(track,ilayer);
7167ae53 2300 }
ae00569a 2301 } else {
2302 modstatus = 5; // no cls in road
2303 // check dead
1c97ce2f 2304 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2305 dz = 0.5*(zmax-zmin);
2306 dy = 0.5*(ymax-ymin);
2307 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2308 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2309 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2310 }
e43c066c 2311 }
ae00569a 2312
2313 if (clAcc) {
2314 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2315 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2316 }
ae00569a 2317 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2318
2319
2320 if (extra) { // search for extra clusters in overlapped modules
2321 AliITStrackV2 tmp(*track);
1c97ce2f 2322 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2323 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2324
2325 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2326 Int_t idetExtra=-1;
a5d0fae6 2327 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2328 Double_t tolerance=0.1;
ae00569a 2329 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2330 // only clusters in another module! (overlaps)
2331 idetExtra = clExtra->GetDetectorIndex();
2332 if (idet == idetExtra) continue;
2333
a5d0fae6 2334 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2335
1c97ce2f 2336 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2337 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2338 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2339 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2340
2341 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2342 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2343 }
2344 if (cci>=0) {
2345 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2346 track->SetExtraModule(ilayer,idetExtra);
2347 }
2348 } // end search for extra clusters in overlapped modules
1c97ce2f 2349
afd25725 2350 // Correct for material of the current layer
7131593b 2351 // cross material
2352 // add time if going outward
ae00569a 2353 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2354
ae00569a 2355 } // end loop on layers
2356
db355ee7 2357 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2358
e43c066c 2359 return kTRUE;
2360}
44347160 2361//------------------------------------------------------------------------
15dd636f 2362Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2363{
2364 //
2365 // calculate normalized chi2
2366 // return NormalizedChi2(track,0);
2367 Float_t chi2 = 0;
2368 Float_t sum=0;
2369 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2370 // track->fdEdxMismatch=0;
2371 Float_t dedxmismatch =0;
2372 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2373 if (mode<100){
2374 for (Int_t i = 0;i<6;i++){
9fd412a8 2375 if (track->GetClIndex(i)>=0){
e43c066c 2376 Float_t cerry, cerrz;
2377 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2378 else
b9671574 2379 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2380 cerry*=cerry;
2381 cerrz*=cerrz;
b9671574 2382 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2383 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2384 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2385 if (ratio<0.5) {
2386 cchi2+=(0.5-ratio)*10.;
2387 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2388 dedxmismatch+=(0.5-ratio)*10.;
2389 }
2390 }
2391 if (i<2 ||i>3){
b9671574 2392 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2393 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2394 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2395 if (i<2) chi2+=2*cl->GetDeltaProbability();
2396 }
2397 chi2+=cchi2;
2398 sum++;
2399 }
2400 }
b9671574 2401 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2402 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2403 }
2404 }
2405 else{
2406 for (Int_t i = 0;i<4;i++){
9fd412a8 2407 if (track->GetClIndex(i)>=0){
e43c066c 2408 Float_t cerry, cerrz;
2409 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2410 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2411 cerry*=cerry;
2412 cerrz*=cerrz;
b9671574 2413 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2414 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2415 sum++;
2416 }
2417 }
2418 for (Int_t i = 4;i<6;i++){
9fd412a8 2419 if (track->GetClIndex(i)>=0){
e43c066c 2420 Float_t cerry, cerrz;
2421 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2422 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2423 cerry*=cerry;
2424 cerrz*=cerrz;
2425 Float_t cerryb, cerrzb;
2426 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2427 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2428 cerryb*=cerryb;
2429 cerrzb*=cerrzb;
b9671574 2430 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2431 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2432 sum++;
2433 }
2434 }
2435 }
b9671574 2436 if (track->GetESDtrack()->GetTPCsignal()>85){
2437 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2438 if (ratio<0.5) {
2439 chi2+=(0.5-ratio)*5.;
2440 }
2441 if (ratio>2){
2442 chi2+=(ratio-2.0)*3;
2443 }
2444 }
2445 //
b9671574 2446 Double_t match = TMath::Sqrt(track->GetChi22());
2447 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2448 if (!track->GetConstrain()) {
2449 if (track->GetNumberOfClusters()>2) {
2450 match/=track->GetNumberOfClusters()-2.;
2451 } else {
2452 match=0;
2453 }
2454 }
e43c066c 2455 if (match<0) match=0;
f8720bda 2456
2457 // penalty factor for missing points (NDeadZone>0), but no penalty
2458 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2459 // or there is a dead from OCDB)
2460 Float_t deadzonefactor = 0.;
2461 if (track->GetNDeadZone()>0.) {
2462 Float_t sumDeadZoneProbability=0;
2463 for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay);
2464 Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2465 if(nDeadZoneWithProbNot1>0.) {
2466 Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability);
2467 deadZoneProbability /= nDeadZoneWithProbNot1;
2468 deadzonefactor = 3.*(1.1-deadZoneProbability);
2469 }
2470 }
2471
b9671574 2472 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2473 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2474 1./(1.+track->GetNSkipped()));
e43c066c 2475
2476 return normchi2;
2477}
44347160 2478//------------------------------------------------------------------------
a70ed6ad 2479Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2480{
2481 //
2482 // return matching chi2 between two tracks
d1181f10 2483 Double_t largeChi2=1000.;
2484
15dd636f 2485 AliITStrackMI track3(*track2);
d1181f10 2486 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2487 TMatrixD vec(5,1);
6c94f330 2488 vec(0,0)=track1->GetY() - track3.GetY();
2489 vec(1,0)=track1->GetZ() - track3.GetZ();
2490 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2491 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2492 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2493 //
2494 TMatrixD cov(5,5);
6c94f330 2495 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2496 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2497 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2498 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2499 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2500
6c94f330 2501 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2502 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2503 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2504 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2505 //
6c94f330 2506 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2507 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2508 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2509 //
6c94f330 2510 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2511 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2512 //
6c94f330 2513 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2514
2515 cov.Invert();
2516 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2517 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2518 return chi2(0,0);
2519}
44347160 2520//------------------------------------------------------------------------
a70ed6ad 2521Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2522{
2523 //
afd25725 2524 // return probability that given point (characterized by z position and error)
2525 // is in SPD dead zone
e43c066c 2526 //
afd25725 2527 Double_t probability = 0.;
e43c066c 2528 Double_t absz = TMath::Abs(zpos);
afd25725 2529 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2530 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2531 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2532 Double_t zmin, zmax;
2533 if (zpos<-6.) { // dead zone at z = -7
e50912db 2534 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2535 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2536 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2537 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2538 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2539 } else if (absz<2.) { // dead zone at z = 0
e50912db 2540 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2541 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2542 } else {
2543 zmin = 0.;
2544 zmax = 0.;
e43c066c 2545 }
afd25725 2546 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2547 // dead zone)
2548 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2549 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2550 return probability;
2551}
44347160 2552//------------------------------------------------------------------------
a70ed6ad 2553Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2554{
2555 //
2556 // calculate normalized chi2
2557 Float_t chi2[6];
2558 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2559 Float_t ncl = 0;
2560 for (Int_t i = 0;i<6;i++){
b9671574 2561 if (TMath::Abs(track->GetDy(i))>0){
2562 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2563 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2564 ncl++;
2565 }
2566 else{chi2[i]=10000;}
2567 }
2568 Int_t index[6];
2569 TMath::Sort(6,chi2,index,kFALSE);
2570 Float_t max = float(ncl)*fac-1.;
2571 Float_t sumchi=0, sumweight=0;
2572 for (Int_t i=0;i<max+1;i++){
2573 Float_t weight = (i<max)?1.:(max+1.-i);
2574 sumchi+=weight*chi2[index[i]];
2575 sumweight+=weight;
2576 }
2577 Double_t normchi2 = sumchi/sumweight;
2578 return normchi2;
2579}
44347160 2580//------------------------------------------------------------------------
a70ed6ad 2581Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2582{
2583 //
2584 // calculate normalized chi2
2585 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2586 Int_t npoints = 0;
2587 Double_t res =0;
2588 for (Int_t i=0;i<6;i++){
b9671574 2589 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2590 Double_t sy1 = forwardtrack->GetSigmaY(i);
2591 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2592 Double_t sy2 = backtrack->GetSigmaY(i);
2593 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2594 if (i<2){ sy2=1000.;sz2=1000;}
2595 //
b9671574 2596 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2597 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2598 //
2599 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2600 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2601 //
2602 res+= nz0*nz0+ny0*ny0;
2603 npoints++;
2604 }
2605 if (npoints>1) return
6c23ffed 2606 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2607 //2*forwardtrack->fNUsed+
b9671574 2608 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2609 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2610 return 1000;
2611}
44347160 2612//------------------------------------------------------------------------
e43c066c 2613Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2614 //--------------------------------------------------------------------
2615 // Return pointer to a given cluster
2616 //--------------------------------------------------------------------
2617 Int_t l=(index & 0xf0000000) >> 28;
2618 Int_t c=(index & 0x0fffffff) >> 00;
2619 return fgLayers[l].GetWeight(c);
2620}
44347160 2621//------------------------------------------------------------------------
a70ed6ad 2622void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2623{
2624 //---------------------------------------------
2625 // register track to the list
628e7bb0 2626 //
b9671574 2627 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2628 //
2629 //
e43c066c 2630 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2631 Int_t index = track->GetClusterIndex(icluster);
2632 Int_t l=(index & 0xf0000000) >> 28;
2633 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2634 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2635 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2636 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2637 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2638 break;
2639 }
2640 }
2641 }
2642}
44347160 2643//------------------------------------------------------------------------
a70ed6ad 2644void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2645{
2646 //---------------------------------------------
2647 // unregister track from the list
2648 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2649 Int_t index = track->GetClusterIndex(icluster);
2650 Int_t l=(index & 0xf0000000) >> 28;
2651 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2652 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2653 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2654 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2655 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2656 }
2657 }
2658 }
2659}
44347160 2660//------------------------------------------------------------------------
00a7cc50 2661Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2662{
2663 //-------------------------------------------------------------
2664 //get number of shared clusters
2665 //-------------------------------------------------------------
2666 Float_t shared=0;
2667 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2668 // mean number of clusters
2669 Float_t *ny = GetNy(id), *nz = GetNz(id);
2670
2671
2672 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2673 Int_t index = track->GetClusterIndex(icluster);
2674 Int_t l=(index & 0xf0000000) >> 28;
2675 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2676 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2677 if (ny[l]==0){
2678 printf("problem\n");
2679 }
00a7cc50 2680 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2681 Float_t weight=1;
2682 //
2683 Float_t deltan = 0;
2684 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2685 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2686 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2687 if (l<2 || l>3){
2688 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2689 }
2690 else{
2691 deltan = (cl->GetNz()-nz[l]);
2692 }
2693 if (deltan>2.0) continue; // extended - highly probable shared cluster
2694 weight = 2./TMath::Max(3.+deltan,2.);
2695 //
2696 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2697 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2698 list[l]=index;
00a7cc50 2699 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2700 shared+=weight;
2701 break;
2702 }
2703 }
2704 }
b9671574 2705 track->SetNUsed(shared);
e43c066c 2706 return shared;
2707}
44347160 2708//------------------------------------------------------------------------
a70ed6ad 2709Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2710{
2711 //
2712 // find first shared track
2713 //
2714 // mean number of clusters
2715 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2716 //
2717 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2718 Int_t sharedtrack=100000;
2719 Int_t tracks[24],trackindex=0;
2720 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2721 //
2722 for (Int_t icluster=0;icluster<6;icluster++){
2723 if (clusterlist[icluster]<0) continue;
2724 Int_t index = clusterlist[icluster];
2725 Int_t l=(index & 0xf0000000) >> 28;
2726 Int_t c=(index & 0x0fffffff) >> 00;
2727 if (ny[l]==0){
2728 printf("problem\n");
2729 }
b9671574 2730 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2731 //if (l>3) continue;
00a7cc50 2732 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2733 //
2734 Float_t deltan = 0;
2735 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2736 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2737 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2738 if (l<2 || l>3){
2739 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2740 }
2741 else{
2742 deltan = (cl->GetNz()-nz[l]);
2743 }
2744 if (deltan>2.0) continue; // extended - highly probable shared cluster
2745 //
2746 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2747 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2748 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2749 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2750 trackindex++;
2751 }
2752 }
2753 }
2754 if (trackindex==0) return -1;
2755 if (trackindex==1){
2756 sharedtrack = tracks[0];
2757 }else{
2758 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2759 else{
2760 //
a5d0fae6 2761 Int_t tracks2[24], cluster[24];
2762 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2763 Int_t index =0;
2764 //
2765 for (Int_t i=0;i<trackindex;i++){
2766 if (tracks[i]<0) continue;
a5d0fae6 2767 tracks2[index] = tracks[i];
e43c066c 2768 cluster[index]++;
2769 for (Int_t j=i+1;j<trackindex;j++){
2770 if (tracks[j]<0) continue;
2771 if (tracks[j]==tracks[i]){
2772 cluster[index]++;
2773 tracks[j]=-1;
2774 }
2775 }
2776 index++;
2777 }
2778 Int_t max=0;
2779 for (Int_t i=0;i<index;i++){
2780 if (cluster[index]>max) {
a5d0fae6 2781 sharedtrack=tracks2[index];
e43c066c 2782 max=cluster[index];
2783 }
2784 }
2785 }
2786 }
2787
2788 if (sharedtrack>=100000) return -1;
2789 //
2790 // make list of overlaps
2791 shared =0;
2792 for (Int_t icluster=0;icluster<6;icluster++){
2793 if (clusterlist[icluster]<0) continue;
2794 Int_t index = clusterlist[icluster];
2795 Int_t l=(index & 0xf0000000) >> 28;
2796 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2797 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2798 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2799 if (l==0 || l==1){
2800 if (cl->GetNy()>2) continue;
2801 if (cl->GetNz()>2) continue;
2802 }
2803 if (l==4 || l==5){
2804 if (cl->GetNy()>3) continue;
2805 if (cl->GetNz()>3) continue;
2806 }
2807 //
2808 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2809 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2810 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2811 overlist[l]=index;
2812 shared++;
2813 }
2814 }
2815 }
2816 return sharedtrack;
2817}
44347160 2818//------------------------------------------------------------------------
15dd636f 2819AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2820 //
2821 // try to find track hypothesys without conflicts
2822 // with minimal chi2;
2823 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2824 Int_t entries1 = arr1->GetEntriesFast();
2825 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2826 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2827 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2828 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2829 //
15dd636f 2830 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2831 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2832 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2833
2834 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2835 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2836 UnRegisterClusterTracks(track,trackID1);
2837 }
2838 //
2839 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2840 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2841 UnRegisterClusterTracks(track,trackID2);
2842 }
2843 Int_t index1=0;
2844 Int_t index2=0;
2845 Float_t maxconflicts=6;
2846 Double_t maxchi2 =1000.;
2847 //
2848 // get weight of hypothesys - using best hypothesy
2849 Double_t w1,w2;
2850
2851 Int_t list1[6],list2[6];
00a7cc50 2852 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2853 RegisterClusterTracks(track10,trackID1);
2854 RegisterClusterTracks(track20,trackID2);
2855 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2856 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2857 UnRegisterClusterTracks(track10,trackID1);
2858 UnRegisterClusterTracks(track20,trackID2);
2859 //
2860 // normalized chi2
2861 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2862 Float_t nerry[6],nerrz[6];
2863 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2864 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2865 for (Int_t i=0;i<6;i++){
2866 if ( (erry1[i]>0) && (erry2[i]>0)) {
2867 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2868 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2869 }else{
2870 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2871 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2872 }
b9671574 2873 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2874 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2875 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2876 ncl1++;
2877 }
b9671574 2878 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2879 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2880 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2881 ncl2++;
2882 }
2883 }
2884 chi21/=ncl1;
2885 chi22/=ncl2;
2886 //
2887 //
b9671574 2888 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2889 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2890 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2891 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2892 //
2893 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2894 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2895 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2896 );
2897 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2898 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2899 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2900 );
2901
2902 Double_t sumw = w1+w2;
2903 w1/=sumw;
2904 w2/=sumw;
2905 if (w1<w2*0.5) {
2906 w1 = (d2+0.5)/(d1+d2+1.);
2907 w2 = (d1+0.5)/(d1+d2+1.);
2908 }
2909 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2910 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2911 //
2912 // get pair of "best" hypothesys
2913 //
2914 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2915 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2916
2917 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2918 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2919 //if (track1->fFakeRatio>0) continue;
2920 RegisterClusterTracks(track1,trackID1);
2921 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2922 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2923
2924 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2925 //if (track2->fFakeRatio>0) continue;
2926 Float_t nskipped=0;
2927 RegisterClusterTracks(track2,trackID2);
e43c066c 2928 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2929 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2930 UnRegisterClusterTracks(track2,trackID2);
2931 //
b9671574 2932 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2933 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2934 if (nskipped>0.5) continue;
2935 //
2936 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2937 if (conflict1+1<cconflict1) continue;
2938 if (conflict2+1<cconflict2) continue;
2939 Float_t conflict=0;
2940 Float_t sumchi2=0;
2941 Float_t sum=0;
2942 for (Int_t i=0;i<6;i++){
2943 //
2944 Float_t c1 =0.; // conflict coeficients
2945 Float_t c2 =0.;
2946 if (clist1[i]&&clist2[i]){
2947 Float_t deltan = 0;
2948 if (i<2 || i>3){
2949 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2950 }
2951 else{
2952 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2953 }
2954 c1 = 2./TMath::Max(3.+deltan,2.);
2955 c2 = 2./TMath::Max(3.+deltan,2.);
2956 }
2957 else{
2958 if (clist1[i]){
2959 Float_t deltan = 0;
2960 if (i<2 || i>3){
2961 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2962 }
2963 else{
2964 deltan = (clist1[i]->GetNz()-nz1[i]);
2965 }
2966 c1 = 2./TMath::Max(3.+deltan,2.);
2967 c2 = 0;
2968 }
2969
2970 if (clist2[i]){
2971 Float_t deltan = 0;
2972 if (i<2 || i>3){
2973 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2974 }
2975 else{
2976 deltan = (clist2[i]->GetNz()-nz2[i]);
2977 }
2978 c2 = 2./TMath::Max(3.+deltan,2.);
2979 c1 = 0;
2980 }
2981 }
2982 //
a5d0fae6 2983 chi21=0;chi22=0;
b9671574 2984 if (TMath::Abs(track1->GetDy(i))>0.) {
2985 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2986 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2987 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2988 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2989 }else{
b9671574 2990 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2991 }
2992 //
b9671574 2993 if (TMath::Abs(track2->GetDy(i))>0.) {
2994 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2995 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2996 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2997 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2998 }
2999 else{
b9671574 3000 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3001 }
3002 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3003 if (chi21>0) sum+=w1;
3004 if (chi22>0) sum+=w2;
3005 conflict+=(c1+c2);
3006 }
b9671574 3007 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3008 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3009 Double_t normchi2 = 2*conflict+sumchi2/sum;
3010 if ( normchi2 <maxchi2 ){
3011 index1 = itrack1;
3012 index2 = itrack2;
3013 maxconflicts = conflict;
3014 maxchi2 = normchi2;
3015 }
3016 }
3017 UnRegisterClusterTracks(track1,trackID1);
3018 }
3019 //
3020 // if (maxconflicts<4 && maxchi2<th0){
3021 if (maxchi2<th0*2.){
b9671574 3022 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3023 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3024 track1->SetChi2MIP(5,maxconflicts);
3025 track1->SetChi2MIP(6,maxchi2);
3026 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3027 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3028 track1->SetChi2MIP(8,index1);
e43c066c 3029 fBestTrackIndex[trackID1] =index1;
3030 UpdateESDtrack(track1, AliESDtrack::kITSin);
3031 }
b9671574 3032 else if (track10->GetChi2MIP(0)<th1){
3033 track10->SetChi2MIP(5,maxconflicts);
3034 track10->SetChi2MIP(6,maxchi2);
e43c066c 3035 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3036 UpdateESDtrack(track10,AliESDtrack::kITSin);
3037 }
3038
3039 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3040 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3041 UnRegisterClusterTracks(track,trackID1);
3042 }
3043 //
3044 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3045 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3046 UnRegisterClusterTracks(track,trackID2);
3047 }
3048
44347160 3049 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3050 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3051 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3052 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3053 RegisterClusterTracks(track10,trackID1);
3054 }
44347160 3055 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3056 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3057 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3058 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3059 RegisterClusterTracks(track20,trackID2);
3060 }
3061 return track10;
3062
3063}
44347160 3064//------------------------------------------------------------------------
e43c066c 3065void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3066 //--------------------------------------------------------------------
3067 // This function marks clusters assigned to the track
3068 //--------------------------------------------------------------------
3069 AliTracker::UseClusters(t,from);
3070
00a7cc50 3071 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3072 //if (c->GetQ()>2) c->Use();
3073 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3074 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3075 //if (c->GetQ()>2) c->Use();
3076 if (c->GetSigmaZ2()>0.1) c->Use();
3077
3078}
44347160 3079//------------------------------------------------------------------------
15dd636f 3080void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3081{
3082 //------------------------------------------------------------------
3083 // add track to the list of hypothesys
3084 //------------------------------------------------------------------
3085
fddf8459 3086 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3087 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3088 //
3089 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3090 if (!array) {
3091 array = new TObjArray(10);
3092 fTrackHypothesys.AddAt(array,esdindex);
3093 }
3094 array->AddLast(track);
3095}
44347160 3096//------------------------------------------------------------------------
e43c066c 3097void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3098{
3099 //-------------------------------------------------------------------
3100 // compress array of track hypothesys
3101 // keep only maxsize best hypothesys
3102 //-------------------------------------------------------------------
3103 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3104 if (! (fTrackHypothesys.At(esdindex)) ) return;
3105 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3106 Int_t entries = array->GetEntriesFast();
3107 //
3108 //- find preliminary besttrack as a reference
3109 Float_t minchi2=10000;
3110 Int_t maxn=0;
15dd636f 3111 AliITStrackMI * besttrack=0;
e43c066c 3112 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3113 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3114 if (!track) continue;
3115 Float_t chi2 = NormalizedChi2(track,0);
3116 //
b9671574 3117 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3118 track->SetLabel(tpcLabel);
3119 CookdEdx(track);
b9671574 3120 track->SetFakeRatio(1.);
e43c066c 3121 CookLabel(track,0.); //For comparison only
3122 //
44347160 3123 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3124 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3125 if (track->GetNumberOfClusters()<maxn) continue;
3126 maxn = track->GetNumberOfClusters();
3127 if (chi2<minchi2){
3128 minchi2=chi2;
3129 besttrack=track;
3130 }
3131 }
3132 else{
b9671574 3133 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3134 delete array->RemoveAt(itrack);
3135 }
e43c066c 3136 }
3137 }
3138 if (!besttrack) return;
3139 //
3140 //
3141 //take errors of best track as a reference
3142 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3143 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3144 for (Int_t j=0;j<6;j++) {
9fd412a8 3145 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3146 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3147 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3148 ny[j] = besttrack->GetNy(j);
3149 nz[j] = besttrack->GetNz(j);
e43c066c 3150 }
3151 }
3152 //
3153 // calculate normalized chi2
3154 //
3155 Float_t * chi2 = new Float_t[entries];
3156 Int_t * index = new Int_t[entries];
3157 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3158 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3159 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3160 if (track){
b9671574 3161 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3162 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3163 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3164 else{
b9671574 3165 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3166 delete array->RemoveAt(itrack);
3167 }
3168 }
e43c066c 3169 }
3170 }
3171 //
3172 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3173 besttrack = (AliITStrackMI*)array->At(index[0]);
44347160 3174 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3175 for (Int_t j=0;j<6;j++){
9fd412a8 3176 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3177 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3178 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3179 ny[j] = besttrack->GetNy(j);
3180 nz[j] = besttrack->GetNz(j);
e43c066c 3181 }
3182 }
3183 }
3184 //
3185 // calculate one more time with updated normalized errors
3186 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3187 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3188 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3189 if (track){
b9671574 3190 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
44347160 3191 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3192 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3193 else
3194 {
b9671574 3195 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3196 delete array->RemoveAt(itrack);
3197 }
3198 }
e43c066c 3199 }
3200 }
3201 entries = array->GetEntriesFast();
3202 //
628e7bb0 3203 //
e43c066c 3204 if (entries>0){
3205 TObjArray * newarray = new TObjArray();
3206 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3207 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3208 if (besttrack){
3209 //
a5d0fae6 3210 for (Int_t j=0;j<6;j++){
3211 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3212 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3213 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3214 ny[j] = besttrack->GetNy(j);
3215 nz[j] = besttrack->GetNz(j);
e43c066c 3216 }
3217 }
b9671574 3218 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3219 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3220 Float_t minn = besttrack->GetNumberOfClusters()-3;
3221 Int_t accepted=0;
3222 for (Int_t i=0;i<entries;i++){
15dd636f 3223 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3224 if (!track) continue;
3225 if (accepted>maxcut) break;
b9671574 3226 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3227 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3228 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3229 delete array->RemoveAt(index[i]);
3230 continue;
3231 }
e43c066c 3232 }
b9671574 3233 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3234 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3235 if (!shortbest) accepted++;
e43c066c 3236 //
3237 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3238 for (Int_t j=0;j<6;j++){
3239 if (nz[j]==0){
3240 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3241 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3242 ny[j] = track->GetNy(j);
3243 nz[j] = track->GetNz(j);
e43c066c 3244 }
3245 }
3246 }
3247 else{
3248 delete array->RemoveAt(index[i]);
3249 }
3250 }
3251 array->Delete();
3252 delete fTrackHypothesys.RemoveAt(esdindex);
3253 fTrackHypothesys.AddAt(newarray,esdindex);
3254 }
3255 else{
3256 array->Delete();
3257 delete fTrackHypothesys.RemoveAt(esdindex);
3258 }
3259 }
3260 delete [] chi2;
3261 delete [] index;
3262}
44347160 3263//------------------------------------------------------------------------
15dd636f 3264AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3265{
3266 //-------------------------------------------------------------
3267 // try to find best hypothesy
3268 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3269 //-------------------------------------------------------------
3270 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3271 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3272 if (!array) return 0;
3273 Int_t entries = array->GetEntriesFast();
3274 if (!entries) return 0;
3275 Float_t minchi2 = 100000;
15dd636f 3276 AliITStrackMI * besttrack=0;
e43c066c 3277 //
15dd636f 3278 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3279 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3280 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3281 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3282 //
3283 for (Int_t i=0;i<entries;i++){
15dd636f 3284 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3285 if (!track) continue;
628e7bb0 3286 Float_t sigmarfi,sigmaz;
3287 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3288 track->SetDnorm(0,sigmarfi);
3289 track->SetDnorm(1,sigmaz);
628e7bb0 3290 //
b9671574 3291 track->SetChi2MIP(1,1000000);
3292 track->SetChi2MIP(2,1000000);
3293 track->SetChi2MIP(3,1000000);
e43c066c 3294 //
3295 // backtrack
15dd636f 3296 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3297 if (track->GetConstrain()) {
e50912db 3298 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3299 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3300 backtrack->ResetCovariance(10.);
628e7bb0 3301 }else{
6c94f330 3302 backtrack->ResetCovariance(10.);
628e7bb0 3303 }
e43c066c 3304 backtrack->ResetClusters();
628e7bb0 3305
e43c066c 3306 Double_t x = original->GetX();
3307 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3308 //
b9671574 3309 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3310 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3311 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3312 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3313
b9671574 3314 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3315 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3316 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3317
3318
44347160 3319 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3320 //
3321 //forward track - without constraint
15dd636f 3322 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3323 forwardtrack->ResetClusters();
3324 x = track->GetX();
628e7bb0 3325 RefitAt(x,forwardtrack,track);
b9671574 3326 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3327 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3328 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3329
791f9a2a 3330 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3331 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3332 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3333 forwardtrack->SetD(0,track->GetD(0));
3334 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3335 {
3336 Int_t list[6];
00a7cc50 3337 AliITSRecPoint* clist[6];
b9671574 3338 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3339 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3340 }
3341
b9671574 3342 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3343 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3344 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3345 track->SetChi2MIP(3,1000);
e43c066c 3346 continue;
3347 }
b9671574 3348 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3349 //
3350 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3351 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3352 }
3353 if (chi2 < minchi2){
15dd636f 3354 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3355 besttrack = track;
e43c066c 3356 besttrack->SetLabel(track->GetLabel());
b9671574 3357 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3358 minchi2 = chi2;
791f9a2a 3359 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3360 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3361 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3362 }
3363 }
3364 delete backtrack;
3365 delete forwardtrack;
3366 Int_t accepted=0;
3367 for (Int_t i=0;i<entries;i++){
fddf8459 3368 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3369
e43c066c 3370 if (!track) continue;
628e7bb0 3371
44347160 3372 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3373 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3374 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3375 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3376 delete array->RemoveAt(i);
3377 continue;
3378 }
e43c066c 3379 }
3380 else{
3381 accepted++;
3382 }
3383 }
3384 //
3385 array->Compress();
3386 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3387
e43c066c 3388 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3389 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3390 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3391 if (!besttrack) return 0;
b9671574 3392 besttrack->SetChi2MIP(8,0);
e43c066c 3393 fBestTrackIndex[esdindex]=0;
3394 entries = array->GetEntriesFast();
15dd636f 3395 AliITStrackMI *longtrack =0;
e43c066c 3396 minchi2 =1000;
b9671574 3397 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3398 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3399 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3400 if (!track->GetConstrain()) continue;
3401 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3402 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3403 if (track->GetChi2MIP(0)>4.) continue;
3404 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3405 longtrack =track;
3406 }
3407 //if (longtrack) besttrack=longtrack;
3408
3409 Int_t list[6];
00a7cc50 3410 AliITSRecPoint * clist[6];
e43c066c 3411 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3412 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3413 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3414 RegisterClusterTracks(besttrack,esdindex);
3415 }
3416 //
3417 //
3418 if (shared>0.0){
3419 Int_t nshared;
3420 Int_t overlist[6];
3421 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3422 if (sharedtrack>=0){
3423 //
3424 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3425 if (besttrack){
3426 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3427 }
3428 else return 0;
3429 }
3430 }
3431
3432 if (shared>2.5) return 0;
3433 if (shared>1.0) return besttrack;
3434 //
628e7bb0 3435 // Don't sign clusters if not gold track
3436 //
3437 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3438 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3439 //
e43c066c 3440 if (fConstraint[fPass]){
3441 //
3442 // sign clusters
3443 //
3444 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3445 for (Int_t i=0;i<6;i++){
b9671574 3446 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3447 if (index<0) continue;
e43c066c 3448 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3449 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3450 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3451 if (!c) continue;
3452 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3453 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3454 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3455 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3456 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3457 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3458
3459 Bool_t cansign = kTRUE;
3460 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3461 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3462 if (!track) continue;
b9671574 3463 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3464 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3465 cansign = kFALSE;
3466 break;
3467 }
3468 }
3469 if (cansign){
b9671574 3470 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3471 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3472 if (!c->IsUsed()) c->Use();
3473 }
3474 }
3475 }
3476 return besttrack;
3477}
44347160 3478//------------------------------------------------------------------------
e43c066c 3479void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3480{
3481 //
3482 // get "best" hypothesys
628e7bb0 3483 //
e43c066c 3484
3485 Int_t nentries = itsTracks.GetEntriesFast();
3486 for (Int_t i=0;i<nentries;i++){
15dd636f 3487 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3488 if (!track) continue;
3489 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3490 if (!array) continue;
3491 if (array->GetEntriesFast()<=0) continue;
3492 //
15dd636f 3493 AliITStrackMI* longtrack=0;
e43c066c 3494 Float_t minn=0;
3495 Float_t maxchi2=1000;
3496 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3497 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3498 if (!trackHyp) continue;
3499 if (trackHyp->GetGoldV0()) {
3500 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3501 break;
3502 }
a5d0fae6 3503 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3504 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3505 if (fAfterV0){
a5d0fae6 3506 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3507 }
a5d0fae6 3508 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3509 //
3510 if (chi2 > maxchi2) continue;
a5d0fae6 3511 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3512 maxchi2 = chi2;
a5d0fae6 3513 longtrack=trackHyp;
e43c066c 3514 }
628e7bb0 3515 //
3516 //
3517 //
15dd636f 3518 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3519 if (!longtrack) {longtrack = besttrack;}
3520 else besttrack= longtrack;
628e7bb0 3521 //
afd25725 3522 if (besttrack) {
e43c066c 3523 Int_t list[6];
00a7cc50 3524 AliITSRecPoint * clist[6];
e43c066c 3525 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3526 //
b9671574 3527 track->SetNUsed(shared);
3528 track->SetNSkipped(besttrack->GetNSkipped());
3529 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3530 if (shared>0) {
3531 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3532 Int_t nshared;
3533 Int_t overlist[6];
3534 //
3535 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3536 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3537 if (sharedtrack>=0) {
e43c066c 3538 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3539 }
3540 }
afd25725 3541 if (besttrack&&fAfterV0) {
628e7bb0 3542 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3543 }
e43c066c 3544 if (besttrack&&fConstraint[fPass])
3545 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3546 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3547 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3548 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3549 }
3550
3551 }
3552 }
3553}
44347160 3554//------------------------------------------------------------------------
15dd636f 3555void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3556 //--------------------------------------------------------------------
3557 //This function "cooks" a track label. If label<0, this track is fake.
3558 //--------------------------------------------------------------------
3559 Int_t tpcLabel=-1;
3560
b9671574 3561 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3562
b9671574 3563 track->SetChi2MIP(9,0);
e43c066c 3564 Int_t nwrong=0;
3565 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3566 Int_t cindex = track->GetClusterIndex(i);
3567 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3568 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3569 Int_t isWrong=1;
3570 for (Int_t ind=0;ind<3;ind++){
3571 if (tpcLabel>0)
3572 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
9be1d1c7 3573 AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3574 }
b9671574 3575 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3576 nwrong+=isWrong;
3577 }
7d43b4c4 3578 Int_t nclusters = track->GetNumberOfClusters();
3579 if (nclusters > 0) //PH Some tracks don't have any cluster
3580 track->SetFakeRatio(double(nwrong)/double(nclusters));
e43c066c 3581 if (tpcLabel>0){
b9671574 3582 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
e43c066c 3583 else
b9671574 3584 track->SetLabel(tpcLabel);
e43c066c 3585 }
9be1d1c7 3586 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3587
3588}
44347160 3589//------------------------------------------------------------------------
15dd636f 3590void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
e43c066c 3591{
3592 //
b9671574 3593 track->SetChi2MIP(9,0);
e43c066c 3594 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3595 Int_t cindex = track->GetClusterIndex(i);
3596 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3597 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3598 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3599 Int_t isWrong=1;
3600 for (Int_t ind=0;ind<3;ind++){
3601 if (cl->GetLabel(ind)==lab) isWrong=0;
3602 }
b9671574 3603 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3604 }
e43c066c 3605 Double_t low=0.;
3606 Double_t up=0.51;
09cf9d66 3607 track->CookdEdx(low,up);
e43c066c 3608}
44347160 3609//------------------------------------------------------------------------
e50912db 3610void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3611 //
a70ed6ad 3612 // Create some arrays
e43c066c 3613 //
afd25725 3614 if (fCoefficients) delete []fCoefficients;
3615 fCoefficients = new Float_t[ntracks*48];
3616 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3617}
44347160 3618//------------------------------------------------------------------------
00a7cc50 3619Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3620{
3621 //
a70ed6ad 3622 // Compute predicted chi2
e43c066c 3623 //
3624 Float_t erry,errz;
3625 Float_t theta = track->GetTgl();
3626 Float_t phi = track->GetSnp();
60e55aee 3627 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
e50912db 3628 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz);
4187a601 3629 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()));
1c97ce2f 3630 // Take into account the mis-alignment (bring track to cluster plane)
3631 Double_t xTrOrig=track->GetX();
9be1d1c7 3632 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
4187a601 3633 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()));
e43c066c 3634 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz);
1c97ce2f 3635 // Bring the track back to detector plane in ideal geometry
3636 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3637 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3638 Float_t ny,nz;
e50912db 3639 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3640 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3641 if (delta>1){
3642 chi2+=0.5*TMath::Min(delta/2,2.);
3643 chi2+=2.*cluster->GetDeltaProbability();
3644 }
3645 //
b9671574 3646 track->SetNy(layer,ny);
3647 track->SetNz(layer,nz);
3648 track->SetSigmaY(layer,erry);
3649 track->SetSigmaZ(layer, errz);
e43c066c 3650 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3651 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3652 return chi2;
3653
3654}
e50912db 3655//------------------------------------------------------------------------
3656Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3657{
3658 //
a70ed6ad 3659 // Update ITS track
e43c066c 3660 //
3661 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3662 track->SetClIndex(layer, index);
572f41f9 3663 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3664 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3665 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3666 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3667 }
e43c066c 3668 }
a504d56f 3669
1f3e997f 3670 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
a504d56f 3671
afd25725 3672
1c97ce2f 3673 // Take into account the mis-alignment (bring track to cluster plane)
3674 Double_t xTrOrig=track->GetX();
4187a601 3675 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3676 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3677 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3678 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3679
9be1d1c7 3680 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
fddf8459 3681
1f3e997f 3682
150f264c 3683 AliCluster c(*cl);
3684 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3685 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3686
1c97ce2f 3687
3688 Int_t updated = track->UpdateMI(&c,chi2,index);
3689
3690 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3691 if (!track->Propagate(xTrOrig)) return 0;
1c97ce2f 3692
4187a601 3693 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3694 return updated;
e43c066c 3695}
150f264c 3696
44347160 3697//------------------------------------------------------------------------
a70ed6ad 3698void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3699{
3700 //
3701 //DCA sigmas parameterization
3702 //to be paramterized using external parameters in future
3703 //
3704 //
afd25725 3705 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3706 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3707}
e50912db 3708//------------------------------------------------------------------------
a70ed6ad 3709void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3710{
3711 //
a70ed6ad 3712 // Clusters from delta electrons?
e43c066c 3713 //
a70ed6ad 3714 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3715 if (entries<4) return;
a70ed6ad 3716 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3717 Int_t layer = cluster->GetLayer();
3718 if (layer>1) return;
3719 Int_t index[10000];
3720 Int_t ncandidates=0;
3721 Float_t r = (layer>0)? 7:4;
3722 //
3723 for (Int_t i=0;i<entries;i++){
a70ed6ad 3724 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3725 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3726 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3727 index[ncandidates] = i; //candidate to belong to delta electron track
3728 ncandidates++;
3729 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3730 cl0->SetDeltaProbability(1);
3731 }
3732 }
3733 //
3734 //
3735 //
3736 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3737 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3738 if (cl0->GetDeltaProbability()>0.8) continue;
3739 //
3740 Int_t ncl = 0;
3741 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3742 sumy=sumz=sumy2=sumyz=sumw=0.0;
3743 for (Int_t j=0;j<ncandidates;j++){
3744 if (i==j) continue;
a70ed6ad 3745 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3746 //
3747 Float_t dz = cl0->GetZ()-cl1->GetZ();
3748 Float_t dy = cl0->GetY()-cl1->GetY();
3749 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3750 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3751 y[ncl] = cl1->GetY();
3752 z[ncl] = cl1->GetZ();
3753 sumy+= y[ncl]*weight;
3754 sumz+= z[ncl]*weight;
3755 sumy2+=y[ncl]*y[ncl]*weight;
3756 sumyz+=y[ncl]*z[ncl]*weight;
3757 sumw+=weight;
3758 ncl++;
3759 }
3760 }
3761 if (ncl<4) continue;
3762 Float_t det = sumw*sumy2 - sumy*sumy;
3763 Float_t delta=1000;
3764 if (TMath::Abs(det)>0.01){
3765 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3766 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3767 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3768 }
3769 else{
3770 Float_t z0 = sumyz/sumy;
3771 delta = TMath::Abs(cl0->GetZ()-z0);
3772 }
3773 if ( delta<0.05) {
3774 cl0->SetDeltaProbability(1-20.*delta);
3775 }
3776 }
3777}
44347160 3778//------------------------------------------------------------------------
15dd636f 3779void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3780{
3781 //
a70ed6ad 3782 // Update ESD track
e43c066c 3783 //
3784 track->UpdateESDtrack(flags);
b9671574 3785 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3786 if (oldtrack) delete oldtrack;
b9671574 3787 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3788 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
628e7bb0 3789 printf("Problem\n");
3790 }
e43c066c 3791}
44347160 3792//------------------------------------------------------------------------
81e97e0d 3793Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3794 //
ae00569a 3795 // Get nearest upper layer close to the point xr.
81e97e0d 3796 // rough approximation
3797 //
bf6adc12 3798 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3799 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3800 Int_t res =6;
3801 for (Int_t i=0;i<6;i++){
bf6adc12 3802 if (radius<kRadiuses[i]){
81e97e0d 3803 res =i;
3804 break;
3805 }
3806 }
3807 return res;
3808}
44347160 3809//------------------------------------------------------------------------
e50912db 3810void AliITStrackerMI::BuildMaterialLUT(TString material) {
3811 //--------------------------------------------------------------------
3812 // Fill a look-up table with mean material
3813 //--------------------------------------------------------------------
3814
3815 Int_t n=1000;
3816 Double_t mparam[7];
3817 Double_t point1[3],point2[3];
3818 Double_t phi,cosphi,sinphi,z;
3819 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3820 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3821 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3822
3823 Int_t ifirst=0,ilast=0;
3824 if(material.Contains("Pipe")) {
3825 ifirst=6; ilast=6;
3826 } else if(material.Contains("Shields")) {
3827 ifirst=7; ilast=8;
3828 } else if(material.Contains("Layers")) {
3829 ifirst=0; ilast=5;
3830 } else {
3831 Error("BuildMaterialLUT","Wrong layer name\n");
3832 }
3833
3834 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3835 Double_t param[5]={0.,0.,0.,0.,0.};
3836 for (Int_t i=0; i<n; i++) {
3837 phi = 2.*TMath::Pi()*gRandom->Rndm();
3838 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3839 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3840 point1[0] = rmin[imat]*cosphi;
3841 point1[1] = rmin[imat]*sinphi;
3842 point1[2] = z;
3843 point2[0] = rmax[imat]*cosphi;
3844 point2[1] = rmax[imat]*sinphi;
3845 point2[2] = z;
3846 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3847 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3848 }
3849 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3850 if(imat<=5) {
3851 fxOverX0Layer[imat] = param[1];
3852 fxTimesRhoLayer[imat] = param[0]*param[4];
3853 } else if(imat==6) {
3854 fxOverX0Pipe = param[1];
3855 fxTimesRhoPipe = param[0]*param[4];
3856 } else if(imat==7) {
3857 fxOverX0Shield[0] = param[1];
3858 fxTimesRhoShield[0] = param[0]*param[4];
3859 } else if(imat==8) {
3860 fxOverX0Shield[1] = param[1];
3861 fxTimesRhoShield[1] = param[0]*param[4];
3862 }
3863 }
3864 /*
3865 printf("%s\n",material.Data());
3866 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3867 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3868 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3869 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3870 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3871 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3872 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3873 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3874 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3875 */
3876 return;
3877}
3878//------------------------------------------------------------------------
3879Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3880 TString direction) {
3881 //-------------------------------------------------------------------
3882 // Propagate beyond beam pipe and correct for material
3883 // (material budget in different ways according to fUseTGeo value)
7131593b 3884 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3885 //-------------------------------------------------------------------
3886
3887 // Define budget mode:
3888 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3889 // 1: material from TGeo in one step (on the fly)
e50912db 3890 // 2: material from lut
9be1d1c7 3891 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 3892 Int_t mode;
3893 switch(fUseTGeo) {
3894 case 0:
3895 mode=0;
3896 break;
3897 case 1:
3898 mode=1;
3899 break;
3900 case 2:
3901 mode=2;
3902 break;
3903 case 3:
3904 if(fTrackingPhase.Contains("Clusters2Tracks"))
3905 { mode=3; } else { mode=1; }
3906 break;
3907 case 4:
3908 if(fTrackingPhase.Contains("Clusters2Tracks"))
3909 { mode=3; } else { mode=2; }
3910 break;
3911 default:
3912 mode=0;
3913 break;
3914 }
3915 if(fTrackingPhase.Contains("Default")) mode=0;
3916
3917 Int_t index=fCurrentEsdTrack;
3918
3919 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
3920 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 3921 Double_t xToGo;
3922 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 3923
3924 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 3925
3926 switch(mode) {
3927 case 0:
3928 xOverX0 = AliITSRecoParam::GetdPipe();
3929 x0 = AliITSRecoParam::GetX0Be();
3930 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 3931 lengthTimesMeanDensity *= dir;
7131593b 3932 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3933 break;
3934 case 1:
3935 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 3936 break;
3937 case 2:
3938 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
3939 xOverX0 = fxOverX0Pipe;
3940 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 3941 lengthTimesMeanDensity *= dir;
7131593b 3942 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3943 break;
3944 case 3:
3945 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
3946 if(fxOverX0PipeTrks[index]<0) {
3947 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
3948 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 3949 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 3950 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
3951 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
3952 return 1;
3953 }
3954 xOverX0 = fxOverX0PipeTrks[index];
3955 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 3956 lengthTimesMeanDensity *= dir;
7131593b 3957 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3958 break;
3959 }
3960
e50912db 3961 return 1;
3962}
3963//------------------------------------------------------------------------
3964Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
3965 TString shield,
3966 TString direction) {
3967 //-------------------------------------------------------------------
3968 // Propagate beyond SPD or SDD shield and correct for material
3969 // (material budget in different ways according to fUseTGeo value)
7131593b 3970 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3971 //-------------------------------------------------------------------
3972
3973 // Define budget mode:
3974 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3975 // 1: material from TGeo in steps of X cm (on the fly)
3976 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 3977 // 2: material from lut
9be1d1c7 3978 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 3979 Int_t mode;
3980 switch(fUseTGeo) {
3981 case 0:
3982 mode=0;
3983 break;
3984 case 1:
3985 mode=1;
3986 break;
3987 case 2:
3988 mode=2;
3989 break;
3990 case 3:
3991 if(fTrackingPhase.Contains("Clusters2Tracks"))
3992 { mode=3; } else { mode=1; }
3993 break;
3994 case 4:
3995 if(fTrackingPhase.Contains("Clusters2Tracks"))
3996 { mode=3; } else { mode=2; }
3997 break;
3998 default:
3999 mode=0;
4000 break;
4001 }
4002 if(fTrackingPhase.Contains("Default")) mode=0;
4003
4004 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4005 Double_t rToGo;
4006 Int_t shieldindex=0;
4007 if (shield.Contains("SDD")) { // SDDouter
4008 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4009 shieldindex=1;
4010 } else if (shield.Contains("SPD")) { // SPDouter
4011 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4012 shieldindex=0;
4013 } else {
4014 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4015 return 0;
4016 }
67178f34 4017
4018 // do nothing if we are already beyond the shield
4019 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4020 if(dir<0 && rTrack > rToGo) return 1; // going outward
4021 if(dir>0 && rTrack < rToGo) return 1; // going inward
4022
4023
70e83b26 4024 Double_t xToGo;
4025 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4026
4027 Int_t index=2*fCurrentEsdTrack+shieldindex;
4028
4029 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4030 Int_t nsteps=1;
e50912db 4031
4032 switch(mode) {
4033 case 0:
4034 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4035 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4036 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4037 lengthTimesMeanDensity *= dir;
7131593b 4038 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4039 break;
4040 case 1:
9be1d1c7 4041 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4042 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4043 break;
4044 case 2:
4045 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4046 xOverX0 = fxOverX0Shield[shieldindex];
4047 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4048 lengthTimesMeanDensity *= dir;
7131593b 4049 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4050 break;
4051 case 3:
4052 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4053 if(fxOverX0ShieldTrks[index]<0) {
4054 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4055 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4056 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4057 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4058 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4059 return 1;
4060 }
4061 xOverX0 = fxOverX0ShieldTrks[index];
4062 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4063 lengthTimesMeanDensity *= dir;
7131593b 4064 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4065 break;
4066 }
4067
e50912db 4068 return 1;
4069}
4070//------------------------------------------------------------------------
4071Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4072 Int_t layerindex,
4073 Double_t oldGlobXYZ[3],
4074 TString direction) {
4075 //-------------------------------------------------------------------
4076 // Propagate beyond layer and correct for material
4077 // (material budget in different ways according to fUseTGeo value)
7131593b 4078 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4079 //-------------------------------------------------------------------
4080
4081 // Define budget mode:
4082 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4083 // 1: material from TGeo in stepsof X cm (on the fly)
4084 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4085 // 2: material from lut
9be1d1c7 4086 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4087 Int_t mode;
4088 switch(fUseTGeo) {
4089 case 0:
4090 mode=0;
4091 break;
4092 case 1:
4093 mode=1;
4094 break;
4095 case 2:
4096 mode=2;
4097 break;
4098 case 3:
4099 if(fTrackingPhase.Contains("Clusters2Tracks"))
4100 { mode=3; } else { mode=1; }
4101 break;
4102 case 4:
4103 if(fTrackingPhase.Contains("Clusters2Tracks"))
4104 { mode=3; } else { mode=2; }
4105 break;
4106 default:
4107 mode=0;
4108 break;
4109 }
4110 if(fTrackingPhase.Contains("Default")) mode=0;
4111
4112 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4113
4114 Double_t r=fgLayers[layerindex].GetR();
4115 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4116
4117 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4118 Double_t xToGo;
4119 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4120
4121 Int_t index=6*fCurrentEsdTrack+layerindex;
4122
e50912db 4123
4124 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4125 Int_t nsteps=1;
7131593b 4126
4127 // back before material (no correction)
d634c32b 4128 Double_t rOld,xOld;
7131593b 4129 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4130 if (!t->GetLocalXat(rOld,xOld)) return 0;
4131 if (!t->Propagate(xOld)) return 0;
e50912db 4132
4133 switch(mode) {
4134 case 0:
4135 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4136 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4137 lengthTimesMeanDensity *= dir;
7131593b 4138 // Bring the track beyond the material
4139 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4140 break;
4141 case 1:
9be1d1c7 4142 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4143 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4144 break;
4145 case 2:
4146 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4147 xOverX0 = fxOverX0Layer[layerindex];
4148 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4149 lengthTimesMeanDensity *= dir;
7131593b 4150 // Bring the track beyond the material
4151 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4152 break;
4153 case 3:
4154 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4155 if(fxOverX0LayerTrks[index]<0) {
4156 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4157 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4158 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4159 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4160 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4161 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4162 return 1;
e50912db 4163 }
4164 xOverX0 = fxOverX0LayerTrks[index];
4165 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4166 lengthTimesMeanDensity *= dir;
7131593b 4167 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4168 break;
4169 }
4170
7131593b 4171
e50912db 4172 return 1;
4173}
4174//------------------------------------------------------------------------
4175void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4176 //-----------------------------------------------------------------
4177 // Initialize LUT for storing material for each prolonged track
4178 //-----------------------------------------------------------------
4179 fxOverX0PipeTrks = new Float_t[ntracks];
4180 fxTimesRhoPipeTrks = new Float_t[ntracks];
4181 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4182 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4183 fxOverX0LayerTrks = new Float_t[ntracks*6];
4184 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4185
4186 for(Int_t i=0; i<ntracks; i++) {
4187 fxOverX0PipeTrks[i] = -1.;
4188 fxTimesRhoPipeTrks[i] = -1.;
4189 }
4190 for(Int_t j=0; j<ntracks*2; j++) {
4191 fxOverX0ShieldTrks[j] = -1.;
4192 fxTimesRhoShieldTrks[j] = -1.;
4193 }
4194 for(Int_t k=0; k<ntracks*6; k++) {
4195 fxOverX0LayerTrks[k] = -1.;
4196 fxTimesRhoLayerTrks[k] = -1.;
4197 }
4198
4199 fNtracks = ntracks;
4200
4201 return;
4202}
4203//------------------------------------------------------------------------
4204void AliITStrackerMI::DeleteTrksMaterialLUT() {
4205 //-----------------------------------------------------------------
4206 // Delete LUT for storing material for each prolonged track
4207 //-----------------------------------------------------------------
4208 if(fxOverX0PipeTrks) {
4209 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4210 }
4211 if(fxOverX0ShieldTrks) {
4212 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4213 }
4214
4215 if(fxOverX0LayerTrks) {
4216 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4217 }
4218 if(fxTimesRhoPipeTrks) {
4219 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4220 }
4221 if(fxTimesRhoShieldTrks) {
4222 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4223 }
4224 if(fxTimesRhoLayerTrks) {
4225 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4226 }
4227 return;
4228}
4229//------------------------------------------------------------------------
a70ed6ad 4230Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4231 Int_t ilayer,Int_t idet) const {
2755f080 4232 //-----------------------------------------------------------------
4233 // This method is used to decide whether to allow a prolongation
4234 // without clusters, because we want to skip the layer.
4235 // In this case the return value is > 0:
4236 // return 1: the user requested to skip a layer
4237 // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
4238 //-----------------------------------------------------------------
e43c066c 4239
2755f080 4240 if (AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) return 1;
51ad6848 4241
2755f080 4242 if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4243 // check if track will cross SPD outer layer
4244 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4245 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4246 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4247 }
4248 }
51ad6848 4249
2755f080 4250 return 0;
4251}
4252//------------------------------------------------------------------------
23197852 4253Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4254 Int_t ilayer,Int_t idet,
1c97ce2f 4255 Double_t dz,Double_t dy,
23197852 4256 Bool_t noClusters) const {
6518a6c5 4257 //-----------------------------------------------------------------
4258 // This method is used to decide whether to allow a prolongation
ae00569a 4259 // without clusters, because there is a dead zone in the road.
6518a6c5 4260 // In this case the return value is > 0:
4261 // return 1: dead zone at z=0,+-7cm in SPD
23197852 4262 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4263 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4264 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4265 //-----------------------------------------------------------------
4266
4267 // check dead zones at z=0,+-7cm in the SPD
4268 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4269 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4270 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4271 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4272 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4273 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4274 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4275 for (Int_t i=0; i<3; i++)
4187a601 4276 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4277 AliDebug(2,Form("crack SPD %d",ilayer));
4278 return 1;
4279 }
6518a6c5 4280 }
4281
23197852 4282 // check bad zones from OCDB
4283 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4284
23197852 4285 if (idet<0) return 0;
ae00569a 4286
23197852 4287 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4288
23197852 4289 Int_t detType=-1;
4290 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4291 if (ilayer==0 || ilayer==1) { // ---------- SPD
4292 detType = 0;
4293 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4294 detType = 1;
4295 detSizeFactorX *= 2.;
4296 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4297 detType = 2;
4298 }
a70ed6ad 4299 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4300 if (detType==2) segm->SetLayer(ilayer+1);
4301 Float_t detSizeX = detSizeFactorX*segm->Dx();
4302 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4303
4304 // check if the road overlaps with bad chips
4305 Float_t xloc,zloc;
4187a601 4306 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4307 Float_t zlocmin = zloc-dz;
4308 Float_t zlocmax = zloc+dz;
4309 Float_t xlocmin = xloc-dy;
4310 Float_t xlocmax = xloc+dy;
23197852 4311 Int_t chipsInRoad[100];
4312
4187a601 4313 // check if road goes out of detector
4314 Bool_t touchNeighbourDet=kFALSE;
4315 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.5*detSizeX; touchNeighbourDet=kTRUE;}
4316 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.5*detSizeX; touchNeighbourDet=kTRUE;}
4317 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4318 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4319 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));
4320
4321 // check if this detector is bad
4322 if (det.IsBad()) {
4323 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4324 if(!touchNeighbourDet) {
4325 return 2; // all detectors in road are bad
4326 } else {
4327 return 3; // at least one is bad
4328 }
4329 }
4330
23197852 4331 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4332 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4333 if (!nChipsInRoad) return 0;
4334
4335 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4336 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4337 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4338 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4339 if (det.IsChipBad(chipsInRoad[iCh])) {
4340 anyBad=kTRUE;
4341 } else {
4342 anyGood=kTRUE;
4343 }
6518a6c5 4344 }
4345
4187a601 4346 if (!anyGood) {
4347 if(!touchNeighbourDet) {
4348 AliDebug(2,"all bad in road");
4349 return 2; // all chips in road are bad
4350 } else {
4351 return 3; // at least a bad chip in road
4352 }
4353 }
23197852 4354
4187a601 4355 if (anyBad) {
4356 AliDebug(2,"at least a bad in road");
4357 return 3; // at least a bad chip in road
4358 }
23197852 4359
4360
4361 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4362 || !noClusters) return 0;
4363
4364 // There are no clusters in road: check if there is at least
6a0fdcbd 4365 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4366
4187a601 4367 Int_t idetInITS=idet;
4368 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4369
4187a601 4370 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4371 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4372 return 4;
4187a601 4373 }
4374 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4375
6518a6c5 4376 return 0;
4377}
4378//------------------------------------------------------------------------
ae00569a 4379Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4380 const AliITStrackMI *track,
ae00569a 4381 Float_t &xloc,Float_t &zloc) const {
4382 //-----------------------------------------------------------------
4383 // Gives position of track in local module ref. frame
4384 //-----------------------------------------------------------------
4385
4386 xloc=0.;
4387 zloc=0.;
4388
4389 if(idet<0) return kFALSE;
4390
4391 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4392
4393 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4394
ae00569a 4395 Int_t det = idet - (lad-1)*ndet + 1;
4396
4397 Double_t xyzGlob[3],xyzLoc[3];
4398
1c97ce2f 4399 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4400 // take into account the misalignment: xyz at real detector plane
d1181f10 4401 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4402
d1181f10 4403 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4404
4405 xloc = (Float_t)xyzLoc[0];
4406 zloc = (Float_t)xyzLoc[2];
4407
4408 return kTRUE;
4409}
4410//------------------------------------------------------------------------
a70ed6ad 4411Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4412//
4413// Method to be optimized further:
4414// Aim: decide whether a track can be used for PlaneEff evaluation
4415// the decision is taken based on the track quality at the layer under study
4416// no information on the clusters on this layer has to be used
4417// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4418// the cut is done on number of sigmas from the boundaries
4419//
4420// Input: Actual track, layer [0,5] under study
4421// Output: none
4422// Return: kTRUE if this is a good track
7167ae53 4423//
4424// it will apply a pre-selection to obtain good quality tracks.
4425// Here also you will have the possibility to put a control on the
4426// impact point of the track on the basic block, in order to exclude border regions
4427// this will be done by calling a proper method of the AliITSPlaneEff class.
4428//
4429// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4430// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4431//
4432 Int_t index[AliITSgeomTGeo::kNLayers];
4433 Int_t k;
4434 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4435 //
4436 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4437 index[k]=clusters[k];
4438 }
4439
0e91092f 4440 if(!fPlaneEff)
a31a139f 4441 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4442 AliITSlayer &layer=fgLayers[ilayer];
4443 Double_t r=layer.GetR();
8a32c4b5 4444 AliITStrackMI tmp(*track);
4445
0ed58a47 4446// require a minimal number of cluster in other layers and eventually clusters in closest layers
4447 Int_t ncl=0;
4448 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
4449 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4450 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
9fd412a8 4451 if (tmp.GetClIndex(lay)>=0) ncl++;
0ed58a47 4452 }
4453 Bool_t nextout = kFALSE;
4454 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4455 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4456 Bool_t nextin = kFALSE;
4457 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4458 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4459 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4460 return kFALSE;
4461 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4462 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4463 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4464 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4465
8a32c4b5 4466// detector number
4467 Double_t phi,z;
4468 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4469 Int_t idet=layer.FindDetectorIndex(phi,z);
4470 if(idet<0) { AliInfo(Form("cannot find detector"));
4471 return kFALSE;}
4472
4473 // here check if it has good Chi Square.
4474
4475 //propagate to the intersection with the detector plane
4476 const AliITSdetector &det=layer.GetDetector(idet);
4477 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4478
4479 Float_t locx; //
4480 Float_t locz; //
0e91092f 4481 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4482 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4483 if(key>fPlaneEff->Nblock()) return kFALSE;
4484 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4485 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4486 //***************
0e91092f 4487 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4488 //
4489 //For the time being they are hard-wired, later on from AliITSRecoParam
0e91092f 4490 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
4491 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
4492 Double_t nsigz=4;
4493 Double_t nsigx=4;
4494 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4495 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4496 // done for RecPoints
8a32c4b5 4497
1c97ce2f 4498 // exclude tracks at boundary between detectors
0e91092f 4499 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4500 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4501 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4502 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4503 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 4504
0e91092f 4505 if ( (locx-dx < blockXmn+boundaryWidth) ||
4506 (locx+dx > blockXmx-boundaryWidth) ||
4507 (locz-dz < blockZmn+boundaryWidth) ||
4508 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4509 return kTRUE;
7167ae53 4510}
4511//------------------------------------------------------------------------
a70ed6ad 4512void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4513//
4514// This Method has to be optimized! For the time-being it uses the same criteria
4515// as those used in the search of extra clusters for overlapping modules.
4516//
4517// Method Purpose: estabilish whether a track has produced a recpoint or not
4518// in the layer under study (For Plane efficiency)
4519//
4520// inputs: AliITStrackMI* track (pointer to a usable track)
4521// outputs: none
4522// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4523// traversed by this very track. In details:
4524// - if a cluster can be associated to the track then call
4525// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4526// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4527//
a31a139f 4528 if(!fPlaneEff)
4529 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4530 AliITSlayer &layer=fgLayers[ilayer];
4531 Double_t r=layer.GetR();
7167ae53 4532 AliITStrackMI tmp(*track);
4533
4534// detector number
4535 Double_t phi,z;
4536 if (!tmp.GetPhiZat(r,phi,z)) return;
4537 Int_t idet=layer.FindDetectorIndex(phi,z);
4538
8a32c4b5 4539 if(idet<0) { AliInfo(Form("cannot find detector"));
4540 return;}
7167ae53 4541
7167ae53 4542
0e91092f 4543//propagate to the intersection with the detector plane
7167ae53 4544 const AliITSdetector &det=layer.GetDetector(idet);
4545 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4546
1c97ce2f 4547
0e91092f 4548//***************
4549// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4550//
4551 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4552 TMath::Sqrt(tmp.GetSigmaZ2() +
4553 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4554 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4555 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4556 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4557 TMath::Sqrt(tmp.GetSigmaY2() +
4558 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4559 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4560 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4561
4562// road in global (rphi,z) [i.e. in tracking ref. system]
4563 Double_t zmin = tmp.GetZ() - dz;
4564 Double_t zmax = tmp.GetZ() + dz;
4565 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4566 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4567
4568// select clusters in road
7167ae53 4569 layer.SelectClusters(zmin,zmax,ymin,ymax);
4570
0e91092f 4571// Define criteria for track-cluster association
7167ae53 4572 Double_t msz = tmp.GetSigmaZ2() +
4573 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4574 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4575 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4576 Double_t msy = tmp.GetSigmaY2() +
4577 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4578 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4579 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4580 if (tmp.GetConstrain()) {
7167ae53 4581 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4582 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4583 } else {
4584 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4585 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4586 }
7167ae53 4587 msz = 1./msz; // 1/RoadZ^2
4588 msy = 1./msy; // 1/RoadY^2
0e91092f 4589//
7167ae53 4590
4591 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4592 Int_t idetc=-1;
8a32c4b5 4593 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4594 //Double_t tolerance=0.2;
4595 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4596 idetc = cl->GetDetectorIndex();
4597 if(idet!=idetc) continue;
4598 //Int_t ilay = cl->GetLayer();
4599
4600 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4601 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4602
4603 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4604 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4605 }*/
4606 Float_t locx; //
4607 Float_t locz; //
0e91092f 4608 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4609//
4610 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4611 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4612 if(key>fPlaneEff->Nblock()) return;
4613 Bool_t found=kFALSE;
8a32c4b5 4614 //if (ci>=0) {
1cc5cedc 4615 Double_t chi2;
8a32c4b5 4616 while ((cl=layer.GetNextCluster(clidx))!=0) {
4617 idetc = cl->GetDetectorIndex();
4618 if(idet!=idetc) continue;
4619 // here real control to see whether the cluster can be associated to the track.
4620 // cluster not associated to track
4621 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4622 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4623 // calculate track-clusters chi2
1cc5cedc 4624 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4625 // in particular, the error associated to the cluster
8a32c4b5 4626 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4627 // chi2 cut
4628 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4629 found=kTRUE;
8a32c4b5 4630 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4631 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4632 // track->SetExtraModule(ilayer,idetExtra);
4633 }
4634 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4635 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4636 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4637 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4638 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4639 Int_t cltype[2]={-999,-999};
0e91092f 4640
4641 tr[0]=locx;
4642 tr[1]=locz;
4643 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4644 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4645
3ebe30ad 4646 if (found){
4647 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4648 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4649 cltype[0]=layer.GetCluster(ci)->GetNy();
4650 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4651
4652 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4653 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4654 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4655 // It is computed properly by calling the method
4656 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4657 // T
4658 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4659 //if (tmp.PropagateTo(x,0.,0.)) {
4660 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4661 AliCluster c(*layer.GetCluster(ci));
4662 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4663 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4664 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4665 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4666 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4667 //}
3ebe30ad 4668 }
4669 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 4670 }
7167ae53 4671return;
4672}