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Reset() part of the interface.
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
bf6adc12 35
4187a601 36#include "AliLog.h"
a70ed6ad 37#include "AliITSPlaneEff.h"
38#include "AliITSCalibrationSPD.h"
39#include "AliITSCalibrationSDD.h"
40#include "AliITSCalibrationSSD.h"
41#include "AliCDBEntry.h"
42#include "AliCDBManager.h"
43#include "AliAlignObj.h"
44#include "AliTrackPointArray.h"
45#include "AliESDVertex.h"
af885e0f 46#include "AliESDEvent.h"
aad72f45 47#include "AliESDtrack.h"
6c94f330 48#include "AliV0.h"
bf6adc12 49#include "AliHelix.h"
a70ed6ad 50#include "AliITSChannelStatus.h"
51#include "AliITSDetTypeRec.h"
00a7cc50 52#include "AliITSRecPoint.h"
e341247d 53#include "AliITSgeomTGeo.h"
44347160 54#include "AliITSReconstructor.h"
572f41f9 55#include "AliITSClusterParam.h"
23197852 56#include "AliITSsegmentation.h"
57#include "AliITSCalibration.h"
7167ae53 58#include "AliITSPlaneEffSPD.h"
59#include "AliITSPlaneEffSDD.h"
60#include "AliITSPlaneEffSSD.h"
44396017 61#include "AliITSV0Finder.h"
ae00569a 62#include "AliITStrackerMI.h"
e43c066c 63
64ClassImp(AliITStrackerMI)
e43c066c 65
e50912db 66AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 67
8221b41b 68AliITStrackerMI::AliITStrackerMI():AliTracker(),
69fI(0),
70fBestTrack(),
71fTrackToFollow(),
72fTrackHypothesys(),
73fBestHypothesys(),
74fOriginal(),
75fCurrentEsdTrack(),
76fPass(0),
77fAfterV0(kFALSE),
78fLastLayerToTrackTo(0),
afd25725 79fCoefficients(0),
8221b41b 80fEsd(0),
e50912db 81fTrackingPhase("Default"),
6518a6c5 82fUseTGeo(3),
e50912db 83fNtracks(0),
84fxOverX0Pipe(-1.),
85fxTimesRhoPipe(-1.),
86fxOverX0PipeTrks(0),
87fxTimesRhoPipeTrks(0),
88fxOverX0ShieldTrks(0),
89fxTimesRhoShieldTrks(0),
90fxOverX0LayerTrks(0),
91fxTimesRhoLayerTrks(0),
4a66240a 92fDebugStreamer(0),
23197852 93fITSChannelStatus(0),
a70ed6ad 94fkDetTypeRec(0),
ae00569a 95fPlaneEff(0) {
8221b41b 96 //Default constructor
e50912db 97 Int_t i;
98 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
99 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
100 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 101}
44347160 102//------------------------------------------------------------------------
1f3e997f 103AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 104fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 105fBestTrack(),
106fTrackToFollow(),
107fTrackHypothesys(),
108fBestHypothesys(),
109fOriginal(),
110fCurrentEsdTrack(),
111fPass(0),
112fAfterV0(kFALSE),
e50912db 113fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 114fCoefficients(0),
8221b41b 115fEsd(0),
e50912db 116fTrackingPhase("Default"),
6518a6c5 117fUseTGeo(3),
e50912db 118fNtracks(0),
119fxOverX0Pipe(-1.),
120fxTimesRhoPipe(-1.),
121fxOverX0PipeTrks(0),
122fxTimesRhoPipeTrks(0),
123fxOverX0ShieldTrks(0),
124fxTimesRhoShieldTrks(0),
125fxOverX0LayerTrks(0),
126fxTimesRhoLayerTrks(0),
4a66240a 127fDebugStreamer(0),
23197852 128fITSChannelStatus(0),
a70ed6ad 129fkDetTypeRec(0),
ae00569a 130fPlaneEff(0) {
e43c066c 131 //--------------------------------------------------------------------
132 //This is the AliITStrackerMI constructor
133 //--------------------------------------------------------------------
e341247d 134 if (geom) {
135 AliWarning("\"geom\" is actually a dummy argument !");
136 }
137
afd25725 138 fCoefficients = 0;
628e7bb0 139 fAfterV0 = kFALSE;
e341247d 140
e50912db 141 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 142 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
143 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
144
145 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
146 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 147 Double_t poff=TMath::ATan2(y,x);
148 Double_t zoff=z;
e341247d 149 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 150
e341247d 151 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 152 r += TMath::Sqrt(x*x + y*y);
e341247d 153 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 154 r += TMath::Sqrt(x*x + y*y);
e341247d 155 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 156 r += TMath::Sqrt(x*x + y*y);
157 r*=0.25;
158
159 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
160
161 for (Int_t j=1; j<nlad+1; j++) {
162 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 163 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 164 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
165 m.Multiply(tm);
a5d0fae6 166 Double_t txyz[3]={0.};
167 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 168 m.LocalToMaster(txyz,xyz);
a5d0fae6 169 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 170 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 171
172 if (phi<0) phi+=TMath::TwoPi();
173 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
174
e43c066c 175 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
176 new(&det) AliITSdetector(r,phi);
1c97ce2f 177 // compute the real radius (with misalignment)
178 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
179 mmisal.Multiply(tm);
180 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
181 mmisal.LocalToMaster(txyz,xyz);
182 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
183 det.SetRmisal(rmisal);
184
23197852 185 } // end loop on detectors
186 } // end loop on ladders
4fa7f7d1 187 fForceSkippingOfLayer[i] = 0;
23197852 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 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 205 for (Int_t i=0;i<100000;i++){
206 fBestTrackIndex[i]=0;
207 }
afd25725 208
209 // store positions of centre of SPD modules (in z)
210 Double_t tr[3];
211 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
212 fSPDdetzcentre[0] = tr[2];
213 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
214 fSPDdetzcentre[1] = tr[2];
215 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
216 fSPDdetzcentre[2] = tr[2];
217 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
218 fSPDdetzcentre[3] = tr[2];
219
afd25725 220 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 221 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
222 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
223 fUseTGeo = 3;
224 }
e50912db 225
226 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
227 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
228
81e97e0d 229 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
230
7167ae53 231 // only for plane efficiency evaluation
58e8dc31 232 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
233 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 234 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 235 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 236 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
237 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
238 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
239 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 240 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 241 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
242 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 243 }
628e7bb0 244}
44347160 245//------------------------------------------------------------------------
8221b41b 246AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
247fI(tracker.fI),
248fBestTrack(tracker.fBestTrack),
249fTrackToFollow(tracker.fTrackToFollow),
250fTrackHypothesys(tracker.fTrackHypothesys),
251fBestHypothesys(tracker.fBestHypothesys),
252fOriginal(tracker.fOriginal),
253fCurrentEsdTrack(tracker.fCurrentEsdTrack),
254fPass(tracker.fPass),
255fAfterV0(tracker.fAfterV0),
256fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 257fCoefficients(tracker.fCoefficients),
8221b41b 258fEsd(tracker.fEsd),
e50912db 259fTrackingPhase(tracker.fTrackingPhase),
afd25725 260fUseTGeo(tracker.fUseTGeo),
e50912db 261fNtracks(tracker.fNtracks),
262fxOverX0Pipe(tracker.fxOverX0Pipe),
263fxTimesRhoPipe(tracker.fxTimesRhoPipe),
264fxOverX0PipeTrks(0),
265fxTimesRhoPipeTrks(0),
266fxOverX0ShieldTrks(0),
267fxTimesRhoShieldTrks(0),
268fxOverX0LayerTrks(0),
269fxTimesRhoLayerTrks(0),
4a66240a 270fDebugStreamer(tracker.fDebugStreamer),
23197852 271fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 272fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 273fPlaneEff(tracker.fPlaneEff) {
8221b41b 274 //Copy constructor
e50912db 275 Int_t i;
276 for(i=0;i<4;i++) {
277 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
278 }
279 for(i=0;i<6;i++) {
280 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
281 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
282 }
283 for(i=0;i<2;i++) {
284 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
285 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
286 }
8221b41b 287}
44347160 288//------------------------------------------------------------------------
8221b41b 289AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
290 //Assignment operator
291 this->~AliITStrackerMI();
292 new(this) AliITStrackerMI(tracker);
293 return *this;
294}
44347160 295//------------------------------------------------------------------------
628e7bb0 296AliITStrackerMI::~AliITStrackerMI()
297{
298 //
299 //destructor
300 //
e50912db 301 if (fCoefficients) delete [] fCoefficients;
302 DeleteTrksMaterialLUT();
81e97e0d 303 if (fDebugStreamer) {
304 //fDebugStreamer->Close();
305 delete fDebugStreamer;
306 }
23197852 307 if(fITSChannelStatus) delete fITSChannelStatus;
308 if(fPlaneEff) delete fPlaneEff;
e43c066c 309}
44347160 310//------------------------------------------------------------------------
23197852 311void AliITStrackerMI::ReadBadFromDetTypeRec() {
312 //--------------------------------------------------------------------
313 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
314 //i.e. from OCDB
315 //--------------------------------------------------------------------
316
317 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
318
4187a601 319 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 320
a70ed6ad 321 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 322
323 // ITS channels map
324 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 325 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 326
327 // ITS detectors and chips
328 Int_t i=0,j=0,k=0,ndet=0;
329 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 330 Int_t nBadDetsPerLayer=0;
23197852 331 ndet=AliITSgeomTGeo::GetNDetectors(i);
332 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
333 for (k=1; k<ndet+1; k++) {
334 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 335 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 336 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 337 } // end loop on detectors
338 } // end loop on ladders
4187a601 339 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 340 } // end loop on layers
341
342 return;
343}
344//------------------------------------------------------------------------
e43c066c 345Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
346 //--------------------------------------------------------------------
347 //This function loads ITS clusters
348 //--------------------------------------------------------------------
00a7cc50 349 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 350 if (!branch) {
351 Error("LoadClusters"," can't get the branch !\n");
352 return 1;
353 }
354
23197852 355 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 356 branch->SetAddress(&clusters);
357
23197852 358 Int_t i=0,j=0,ndet=0;
e43c066c 359 Int_t detector=0;
23197852 360 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
361 ndet=fgLayers[i].GetNdetectors();
e43c066c 362 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
363 for (; j<jmax; j++) {
364 if (!cTree->GetEvent(j)) continue;
365 Int_t ncl=clusters->GetEntriesFast();
366 SignDeltas(clusters,GetZ());
1f3e997f 367
e43c066c 368 while (ncl--) {
00a7cc50 369 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 370 detector=c->GetDetectorIndex();
a504d56f 371
75fb37cc 372 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 373
00a7cc50 374 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 375 }
19e17f92 376 clusters->Clear();
afd25725 377 // add dead zone "virtual" cluster in SPD, if there is a cluster within
378 // zwindow cm from the dead zone
379 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 380 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 381 Int_t lab[4] = {0,0,0,detector};
382 Int_t info[3] = {0,0,i};
6518a6c5 383 Float_t q = 0.; // this identifies virtual clusters
afd25725 384 Float_t hit[5] = {xdead,
385 0.,
386 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
387 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
388 q};
389 Bool_t local = kTRUE;
390 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 391 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 392 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
393 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 394 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 395 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
396 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 397 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 398 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
399 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 400 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 401 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
402 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 403 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 404 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
405 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 406 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 407 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
408 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 409 }
6518a6c5 410 } // "virtual" clusters in SPD
e43c066c 411
412 }
413 //
414 fgLayers[i].ResetRoad(); //road defined by the cluster density
415 fgLayers[i].SortClusters();
416 }
417
4fa7f7d1 418 // check whether we have to skip some layers
419 SetForceSkippingOfLayer();
420
e43c066c 421 return 0;
422}
44347160 423//------------------------------------------------------------------------
e43c066c 424void AliITStrackerMI::UnloadClusters() {
425 //--------------------------------------------------------------------
426 //This function unloads ITS clusters
427 //--------------------------------------------------------------------
e50912db 428 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 429}
44347160 430//------------------------------------------------------------------------
23197852 431void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
432 //--------------------------------------------------------------------
433 // Publishes all pointers to clusters known to the tracker into the
434 // passed object array.
435 // The ownership is not transfered - the caller is not expected to delete
436 // the clusters.
437 //--------------------------------------------------------------------
438
439 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
440 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
441 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
442 array->AddLast(cl);
443 }
444 }
445
446 return;
447}
448//------------------------------------------------------------------------
44396017 449Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 450 //--------------------------------------------------------------------
451 // Correction for the material between the TPC and the ITS
e43c066c 452 //--------------------------------------------------------------------
e50912db 453 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
454 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
455 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
456 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
457 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
458 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
459 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
460 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 461 } else {
44396017 462 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 463 return 0;
e43c066c 464 }
465
e50912db 466 return 1;
e43c066c 467}
44347160 468//------------------------------------------------------------------------
af885e0f 469Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 470 //--------------------------------------------------------------------
471 // This functions reconstructs ITS tracks
472 // The clusters must be already loaded !
473 //--------------------------------------------------------------------
fddf8459 474
4fa7f7d1 475 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 476
e50912db 477 fTrackingPhase="Clusters2Tracks";
478
e43c066c 479 TObjArray itsTracks(15000);
628e7bb0 480 fOriginal.Clear();
81e97e0d 481 fEsd = event; // store pointer to the esd
afd25725 482
9a5326b1 483 // temporary (for cosmics)
484 if(event->GetVertex()) {
485 TString title = event->GetVertex()->GetTitle();
486 if(title.Contains("cosmics")) {
487 Double_t xyz[3]={GetX(),GetY(),GetZ()};
488 Double_t exyz[3]={0.1,0.1,0.1};
489 SetVertex(xyz,exyz);
490 }
491 }
492 // temporary
afd25725 493
e43c066c 494 {/* Read ESD tracks */
afd25725 495 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 496 Int_t nentr=event->GetNumberOfTracks();
497 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
498 while (nentr--) {
499 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 500 // ---- for debugging:
501 //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 502
503 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
504 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
505 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 506 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 507 AliITStrackMI *t=0;
e43c066c 508 try {
15dd636f 509 t=new AliITStrackMI(*esd);
e43c066c 510 } catch (const Char_t *msg) {
628e7bb0 511 //Warning("Clusters2Tracks",msg);
e43c066c 512 delete t;
513 continue;
514 }
b9671574 515 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
516 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 517
518
afd25725 519 // look at the ESD mass hypothesys !
520 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 521 // write expected q
b9671574 522 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 523
afd25725 524 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 525 //track - can be V0 according to TPC
afd25725 526 } else {
527 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 528 delete t;
529 continue;
e50912db 530 }
afd25725 531 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 532 delete t;
533 continue;
534 }
6c23ffed 535 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 536 delete t;
537 continue;
538 }
e50912db 539 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 540 delete t;
541 continue;
542 }
e43c066c 543 }
b9671574 544 t->SetReconstructed(kFALSE);
e43c066c 545 itsTracks.AddLast(t);
628e7bb0 546 fOriginal.AddLast(t);
e43c066c 547 }
548 } /* End Read ESD tracks */
549
550 itsTracks.Sort();
628e7bb0 551 fOriginal.Sort();
e43c066c 552 Int_t nentr=itsTracks.GetEntriesFast();
553 fTrackHypothesys.Expand(nentr);
81e97e0d 554 fBestHypothesys.Expand(nentr);
afd25725 555 MakeCoefficients(nentr);
513ab112 556 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 557 Int_t ntrk=0;
afd25725 558 // THE TWO TRACKING PASSES
e43c066c 559 for (fPass=0; fPass<2; fPass++) {
560 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 561 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 562 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 563 if (t==0) continue; //this track has been already tracked
1c97ce2f 564 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 565 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 566 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 567 if (fConstraint[fPass]) {
568 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
569 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
570 }
e43c066c 571
572 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 573 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 574 fI = 6;
575 ResetTrackToFollow(*t);
576 ResetBestTrack();
6518a6c5 577
e50912db 578 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 579
e43c066c 580
581 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
582 //
ae00569a 583 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 584 if (!besttrack) continue;
585 besttrack->SetLabel(tpcLabel);
586 // besttrack->CookdEdx();
587 CookdEdx(besttrack);
b9671574 588 besttrack->SetFakeRatio(1.);
e43c066c 589 CookLabel(besttrack,0.); //For comparison only
e43c066c 590 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 591
628e7bb0 592 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
593
b9671574 594 t->SetReconstructed(kTRUE);
1c97ce2f 595 ntrk++;
4187a601 596 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 597 }
598 GetBestHypothesysMIP(itsTracks);
afd25725 599 } // end loop on the two tracking passes
e43c066c 600
cd90f0a2 601 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
602 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 603 fAfterV0 = kTRUE;
628e7bb0 604 //
e43c066c 605 itsTracks.Delete();
606 //
607 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 608 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 609 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
610 if (array) array->Delete();
611 delete fTrackHypothesys.RemoveAt(ientry);
612 }
613
614 fTrackHypothesys.Delete();
81e97e0d 615 fBestHypothesys.Delete();
628e7bb0 616 fOriginal.Clear();
afd25725 617 delete [] fCoefficients;
618 fCoefficients=0;
e50912db 619 DeleteTrksMaterialLUT();
620
e43c066c 621 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 622
623 fTrackingPhase="Default";
628e7bb0 624
e43c066c 625 return 0;
626}
44347160 627//------------------------------------------------------------------------
af885e0f 628Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 629 //--------------------------------------------------------------------
630 // This functions propagates reconstructed ITS tracks back
631 // The clusters must be loaded !
632 //--------------------------------------------------------------------
e50912db 633 fTrackingPhase="PropagateBack";
e43c066c 634 Int_t nentr=event->GetNumberOfTracks();
635 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
636
637 Int_t ntrk=0;
638 for (Int_t i=0; i<nentr; i++) {
639 AliESDtrack *esd=event->GetTrack(i);
640
641 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
642 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
643
15dd636f 644 AliITStrackMI *t=0;
e43c066c 645 try {
15dd636f 646 t=new AliITStrackMI(*esd);
e43c066c 647 } catch (const Char_t *msg) {
628e7bb0 648 //Warning("PropagateBack",msg);
e43c066c 649 delete t;
650 continue;
651 }
b9671574 652 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 653
654 ResetTrackToFollow(*t);
4fa7f7d1 655
67178f34 656 /*
9a5326b1 657 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 658 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 659 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
660 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
661 fTrackToFollow.StartTimeIntegral();
662 // from vertex to outside pipe
663 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 664 }*/
665 // Start time integral and add distance from current position to vertex
666 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
667 fTrackToFollow.GetXYZ(xyzTrk);
668 Double_t dst2 = 0.;
669 for (Int_t icoord=0; icoord<3; icoord++) {
670 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
671 dst2 += di*di;
e43c066c 672 }
67178f34 673 fTrackToFollow.StartTimeIntegral();
674 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 675
6c94f330 676 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 677 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
678 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 679 delete t;
680 continue;
681 }
682 fTrackToFollow.SetLabel(t->GetLabel());
683 //fTrackToFollow.CookdEdx();
684 CookLabel(&fTrackToFollow,0.); //For comparison only
685 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
686 //UseClusters(&fTrackToFollow);
687 ntrk++;
688 }
689 delete t;
690 }
691
692 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
693
e50912db 694 fTrackingPhase="Default";
695
e43c066c 696 return 0;
697}
44347160 698//------------------------------------------------------------------------
af885e0f 699Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 700 //--------------------------------------------------------------------
701 // This functions refits ITS tracks using the
702 // "inward propagated" TPC tracks
703 // The clusters must be loaded !
704 //--------------------------------------------------------------------
e50912db 705 fTrackingPhase="RefitInward";
44396017 706
cd90f0a2 707 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 708
e43c066c 709 Int_t nentr=event->GetNumberOfTracks();
710 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
711
712 Int_t ntrk=0;
713 for (Int_t i=0; i<nentr; i++) {
714 AliESDtrack *esd=event->GetTrack(i);
715
716 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
717 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
718 if (esd->GetStatus()&AliESDtrack::kTPCout)
719 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
720
15dd636f 721 AliITStrackMI *t=0;
e43c066c 722 try {
15dd636f 723 t=new AliITStrackMI(*esd);
e43c066c 724 } catch (const Char_t *msg) {
628e7bb0 725 //Warning("RefitInward",msg);
e43c066c 726 delete t;
727 continue;
728 }
b9671574 729 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 730 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 731 delete t;
732 continue;
733 }
734
735 ResetTrackToFollow(*t);
736 fTrackToFollow.ResetClusters();
737
738 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 739 fTrackToFollow.ResetCovariance(10.);
e43c066c 740
741 //Refitting...
58e8dc31 742 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
743 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 744
4187a601 745 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 746 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 747 AliDebug(2," refit OK");
e43c066c 748 fTrackToFollow.SetLabel(t->GetLabel());
749 // fTrackToFollow.CookdEdx();
750 CookdEdx(&fTrackToFollow);
751
752 CookLabel(&fTrackToFollow,0.0); //For comparison only
753
9a5326b1 754 //The beam pipe
e50912db 755 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 756 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 757 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 758 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
759 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 760 Double_t r[3]={0.,0.,0.};
9a5326b1 761 Double_t maxD=3.;
762 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
763 ntrk++;
e43c066c 764 }
765 }
766 delete t;
767 }
768
769 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
770
e50912db 771 fTrackingPhase="Default";
772
e43c066c 773 return 0;
774}
44347160 775//------------------------------------------------------------------------
e43c066c 776AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
777 //--------------------------------------------------------------------
778 // Return pointer to a given cluster
779 //--------------------------------------------------------------------
780 Int_t l=(index & 0xf0000000) >> 28;
781 Int_t c=(index & 0x0fffffff) >> 00;
782 return fgLayers[l].GetCluster(c);
783}
9a5326b1 784//------------------------------------------------------------------------
df29e9a4 785Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 786 //--------------------------------------------------------------------
df29e9a4 787 // Get track space point with index i
9a5326b1 788 //--------------------------------------------------------------------
60066577 789
78b03929 790 Int_t l=(index & 0xf0000000) >> 28;
791 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 792 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 793 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 794
60066577 795 Float_t xyz[3];
796 Float_t cov[6];
797 cl->GetGlobalXYZ(xyz);
798 cl->GetGlobalCov(cov);
799 p.SetXYZ(xyz, cov);
be77c8c9 800 p.SetCharge(cl->GetQ());
ebbcf1ea 801 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 802 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 803 p.SetClusterType(cl->GetClusterType());
ae079791 804 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 805 switch (l) {
806 case 0:
ae079791 807 iLayer = AliGeomManager::kSPD1;
df29e9a4 808 break;
809 case 1:
ae079791 810 iLayer = AliGeomManager::kSPD2;
df29e9a4 811 break;
812 case 2:
ae079791 813 iLayer = AliGeomManager::kSDD1;
df29e9a4 814 break;
815 case 3:
ae079791 816 iLayer = AliGeomManager::kSDD2;
9a5326b1 817 break;
818 case 4:
819 iLayer = AliGeomManager::kSSD1;
820 break;
821 case 5:
822 iLayer = AliGeomManager::kSSD2;
823 break;
824 default:
825 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
826 break;
827 };
828 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
829 p.SetVolumeID((UShort_t)volid);
830 return kTRUE;
831}
832//------------------------------------------------------------------------
833Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
834 AliTrackPoint& p, const AliESDtrack *t) {
835 //--------------------------------------------------------------------
836 // Get track space point with index i
837 // (assign error estimated during the tracking)
838 //--------------------------------------------------------------------
839
840 Int_t l=(index & 0xf0000000) >> 28;
841 Int_t c=(index & 0x0fffffff) >> 00;
842 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
843 Int_t idet = cl->GetDetectorIndex();
4187a601 844
9a5326b1 845 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
846
847 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
848 Float_t detxy[2];
849 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
850 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
851 Double_t alpha = t->GetAlpha();
852 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 853 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 854 phi += alpha-det.GetPhi();
855 Float_t tgphi = TMath::Tan(phi);
856
857 Float_t tgl = t->GetTgl(); // tgl about const along track
858 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
859
d9ead1a0 860 Float_t errtrky,errtrkz,covyz;
8c139cf3 861 Bool_t addMisalErr=kFALSE;
d9ead1a0 862 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 863
864 Float_t xyz[3];
865 Float_t cov[6];
866 cl->GetGlobalXYZ(xyz);
867 // cl->GetGlobalCov(cov);
868 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 869 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 870 tmpcl.GetGlobalCov(cov);
871
872 p.SetXYZ(xyz, cov);
be77c8c9 873 p.SetCharge(cl->GetQ());
ebbcf1ea 874 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 875 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 876 p.SetClusterType(cl->GetClusterType());
9a5326b1 877
878 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
879 switch (l) {
880 case 0:
881 iLayer = AliGeomManager::kSPD1;
882 break;
883 case 1:
884 iLayer = AliGeomManager::kSPD2;
885 break;
886 case 2:
887 iLayer = AliGeomManager::kSDD1;
888 break;
889 case 3:
890 iLayer = AliGeomManager::kSDD2;
df29e9a4 891 break;
892 case 4:
ae079791 893 iLayer = AliGeomManager::kSSD1;
df29e9a4 894 break;
895 case 5:
ae079791 896 iLayer = AliGeomManager::kSSD2;
df29e9a4 897 break;
898 default:
899 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
900 break;
901 };
ae079791 902 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 903
df29e9a4 904 p.SetVolumeID((UShort_t)volid);
905 return kTRUE;
906}
44347160 907//------------------------------------------------------------------------
81e97e0d 908void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 909{
910 //--------------------------------------------------------------------
911 // Follow prolongation tree
912 //--------------------------------------------------------------------
81e97e0d 913 //
afd25725 914 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
915 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
916
2755f080 917
b9671574 918 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 919 if (esd->GetV0Index(0)>0) {
81e97e0d 920 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 921 // mapping of ESD track is different as ITS track in Containers
81e97e0d 922 // Need something more stable
44347160 923 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 924 for (Int_t i=0;i<3;i++){
925 Int_t index = esd->GetV0Index(i);
926 if (index==0) break;
d6a49f20 927 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 928 if (vertex->GetStatus()<0) continue; // rejected V0
929 //
afd25725 930 if (esd->GetSign()>0) {
931 vertex->SetIndex(0,esdindex);
932 } else {
933 vertex->SetIndex(1,esdindex);
934 }
81e97e0d 935 }
936 }
937 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
938 if (!bestarray){
939 bestarray = new TObjArray(5);
940 fBestHypothesys.AddAt(bestarray,esdindex);
941 }
e43c066c 942
81e97e0d 943 //
e43c066c 944 //setup tree of the prolongations
945 //
15dd636f 946 static AliITStrackMI tracks[7][100];
947 AliITStrackMI *currenttrack;
948 static AliITStrackMI currenttrack1;
949 static AliITStrackMI currenttrack2;
950 static AliITStrackMI backuptrack;
e43c066c 951 Int_t ntracks[7];
952 Int_t nindexes[7][100];
953 Float_t normalizedchi2[100];
954 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 955 otrack->SetNSkipped(0);
15dd636f 956 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 957 ntracks[6]=1;
81e97e0d 958 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 959 Int_t modstatus = 1; // found
960 Float_t xloc,zloc;
e43c066c 961 //
962 //
963 // follow prolongations
e50912db 964 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 965 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 966 fI = ilayer;
e43c066c 967 //
2755f080 968 AliITSlayer &layer=fgLayers[ilayer];
969 Double_t r = layer.GetR();
e43c066c 970 ntracks[ilayer]=0;
971 //
972 //
2755f080 973 Int_t nskipped=0;
e43c066c 974 Float_t nused =0;
e50912db 975 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 976 //set current track
977 if (ntracks[ilayer]>=100) break;
b9671574 978 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
979 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 980 if (ntracks[ilayer]>15+ilayer){
b9671574 981 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
982 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 983 }
984
15dd636f 985 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 986
afd25725 987 // material between SSD and SDD, SDD and SPD
e50912db 988 if (ilayer==3)
989 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
990 if (ilayer==1)
991 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 992
2755f080 993 // detector number
8602c008 994 Double_t phi,z;
995 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 996 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 997
998 Double_t trackGlobXYZ1[3];
d1181f10 999 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1000
2755f080 1001 // Get the budget to the primary vertex for the current track being prolonged
1002 Double_t budgetToPrimVertex = GetEffectiveThickness();
1003
1004 // check if we allow a prolongation without point
6518a6c5 1005 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1006 if (skip) {
1007 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1008 // propagate to the layer radius
d1181f10 1009 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1010 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1011 // apply correction for material of the current layer
1012 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1013 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1014 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1015 vtrack->SetClIndex(ilayer,-1);
ae00569a 1016 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1017 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1018 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1019 }
2755f080 1020 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1021 ntracks[ilayer]++;
6518a6c5 1022 continue;
2755f080 1023 }
1024
1025 // track outside layer acceptance in z
1026 if (idet<0) continue;
1027
1028 //propagate to the intersection with the detector plane
1029 const AliITSdetector &det=layer.GetDetector(idet);
1030 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1031 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1032 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1033 currenttrack1.SetDetectorIndex(idet);
1034 currenttrack2.SetDetectorIndex(idet);
d1181f10 1035 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1036
afd25725 1037 //***************
1c97ce2f 1038 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1039 //
2755f080 1040 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1041 Double_t zmin,zmax,ymin,ymax;
1042 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1043
afd25725 1044 // select clusters in road
e43c066c 1045 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1046 //********************
44347160 1047
afd25725 1048 // Define criteria for track-cluster association
44347160 1049 Double_t msz = currenttrack1.GetSigmaZ2() +
1050 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1051 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1052 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1053 Double_t msy = currenttrack1.GetSigmaY2() +
1054 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1055 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1056 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1057 if (constrain) {
1058 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1059 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1060 } else {
1061 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1062 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1063 }
1064 msz = 1./msz; // 1/RoadZ^2
1065 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1066
e43c066c 1067 //
e43c066c 1068 //
afd25725 1069 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1070 //
afd25725 1071 const AliITSRecPoint *cl=0;
1072 Int_t clidx=-1;
1073 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1074 Bool_t deadzoneSPD=kFALSE;
e43c066c 1075 currenttrack = &currenttrack1;
6518a6c5 1076
ae00569a 1077 // check if the road contains a dead zone
23197852 1078 Bool_t noClusters = kFALSE;
1079 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1080 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1081 Double_t dz=0.5*(zmax-zmin);
1082 Double_t dy=0.5*(ymax-ymin);
1083 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1084 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1085 // create a prolongation without clusters (check also if there are no clusters in the road)
1086 if (dead ||
23197852 1087 (noClusters &&
ae00569a 1088 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1089 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1090 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1091 if (dead==0) {
1092 modstatus = 5; // no cls in road
1093 } else if (dead==1) {
1094 modstatus = 7; // holes in z in SPD
f8720bda 1095 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1096 modstatus = 2; // dead from OCDB
1097 }
1098 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1099 // apply correction for material of the current layer
1100 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1101 if (constrain) { // apply vertex constrain
1102 updatetrack->SetConstrain(constrain);
1103 Bool_t isPrim = kTRUE;
1104 if (ilayer<4) { // check that it's close to the vertex
1105 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1106 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1107 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1108 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1109 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1110 }
1111 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1112 }
f8720bda 1113 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1114 if (dead) {
ae00569a 1115 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1116 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1117 deadzoneSPD=kTRUE;
f8720bda 1118 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1119 updatetrack->SetDeadZoneProbability(ilayer,1.);
1120 } else if (dead==4) { // at least a single dead channel from OCDB
1121 updatetrack->SetDeadZoneProbability(ilayer,0.);
1122 }
6518a6c5 1123 }
1124 ntracks[ilayer]++;
1125 }
1126
ae00569a 1127 clidx=-1;
6518a6c5 1128 // loop over clusters in the road
afd25725 1129 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1130 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1131 Bool_t changedet =kFALSE;
6518a6c5 1132 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1133 Int_t idetc=cl->GetDetectorIndex();
afd25725 1134
a5d0fae6 1135 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1136 // take into account misalignment (bring track to real detector plane)
1137 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1138 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1139 // a first cut on track-cluster distance
1140 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1141 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1142 { // cluster not associated to track
4187a601 1143 AliDebug(2,"not associated");
1c97ce2f 1144 continue;
1145 }
1146 // bring track back to ideal detector plane
9be1d1c7 1147 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1148 } else { // have to move track to cluster's detector
a5d0fae6 1149 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1150 // a first cut on track-cluster distance
a5d0fae6 1151 Double_t y;
1c97ce2f 1152 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1153 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1154 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1155 continue; // cluster not associated to track
e43c066c 1156 //
15dd636f 1157 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1158 changedet = kTRUE;
e43c066c 1159 currenttrack =&currenttrack2;
a5d0fae6 1160 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1161 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1162 changedet = kFALSE;
e43c066c 1163 continue;
1164 }
a5d0fae6 1165 currenttrack->SetDetectorIndex(idetc);
e50912db 1166 // Get again the budget to the primary vertex
1167 // for the current track being prolonged, if had to change detector
1168 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1169 }
1170
afd25725 1171 // calculate track-clusters chi2
1172 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1173 // chi2 cut
4187a601 1174 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1175 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1176 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1177 if (ntracks[ilayer]>=100) continue;
15dd636f 1178 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1179 updatetrack->SetClIndex(ilayer,-1);
afd25725 1180 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1181
6518a6c5 1182 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1183 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1184 AliDebug(2,"update failed");
1c97ce2f 1185 continue;
1186 }
09cf9d66 1187 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1188 modstatus = 1; // found
6518a6c5 1189 } else { // virtual cluster in dead zone
b9671574 1190 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1191 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1192 modstatus = 7; // holes in z in SPD
1193 }
1194
1195 if (changedet) {
1196 Float_t xlocnewdet,zlocnewdet;
d1181f10 1197 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1198 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1199 }
ae00569a 1200 } else {
1201 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1202 }
afd25725 1203 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1204
1205 // apply correction for material of the current layer
e50912db 1206 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1207
afd25725 1208 if (constrain) { // apply vertex constrain
b9671574 1209 updatetrack->SetConstrain(constrain);
e43c066c 1210 Bool_t isPrim = kTRUE;
afd25725 1211 if (ilayer<4) { // check that it's close to the vertex
b9671574 1212 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1213 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1214 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1215 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1216 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1217 }
afd25725 1218 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1219 } //apply vertex constrain
1220 ntracks[ilayer]++;
afd25725 1221 } // create new hypothesis
4187a601 1222 else {
1223 AliDebug(2,"chi2 too large");
1224 }
1225
2755f080 1226 } // loop over possible prolongations
1227
1228 // allow one prolongation without clusters
6518a6c5 1229 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1230 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1231 // apply correction for material of the current layer
1232 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1233 vtrack->SetClIndex(ilayer,-1);
ae00569a 1234 modstatus = 3; // skipped
1235 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1236 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1237 vtrack->IncrementNSkipped();
e43c066c 1238 ntracks[ilayer]++;
1239 }
628e7bb0 1240
2755f080 1241 // allow one prolongation without clusters for tracks with |tgl|>1.1
1242 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1243 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1244 // apply correction for material of the current layer
1245 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1246 vtrack->SetClIndex(ilayer,-1);
ae00569a 1247 modstatus = 3; // skipped
1248 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1249 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1250 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1251 ntracks[ilayer]++;
1252 }
1253
e43c066c 1254
e50912db 1255 } // loop over tracks in layer ilayer+1
afd25725 1256
1257 //loop over track candidates for the current layer
e43c066c 1258 //
1259 //
1260 Int_t accepted=0;
1261
afd25725 1262 Int_t golden=0;
e43c066c 1263 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1264 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1265 if (normalizedchi2[itrack] <
1266 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1267 if (ilayer>4) {
1268 accepted++;
1269 } else {
1270 if (constrain) { // constrain
afd25725 1271 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1272 accepted++;
44347160 1273 } else { // !constrain
afd25725 1274 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1275 accepted++;
44347160 1276 }
e43c066c 1277 }
1278 }
afd25725 1279 // sort tracks by increasing normalized chi2
1280 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1281 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1282 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1283 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1284 } // end loop over layers
1285
afd25725 1286
1287 //
1288 // Now select tracks to be kept
1289 //
44347160 1290 Int_t max = constrain ? 20 : 5;
e43c066c 1291
afd25725 1292 // tracks that reach layer 0 (SPD inner)
44347160 1293 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1294 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1295 if (track.GetNumberOfClusters()<2) continue;
afd25725 1296 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1297 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1298 continue;
1299 }
15dd636f 1300 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1301 }
afd25725 1302
1303 // tracks that reach layer 1 (SPD outer)
628e7bb0 1304 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1305 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1306 if (track.GetNumberOfClusters()<4) continue;
afd25725 1307 if (!constrain && track.GetNormChi2(1) >
1308 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1309 if (constrain) track.IncrementNSkipped();
81e97e0d 1310 if (!constrain) {
b9671574 1311 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1312 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1313 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1314 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1315 }
1316 }
15dd636f 1317 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1318 }
afd25725 1319
6518a6c5 1320 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1321 if (!constrain){
628e7bb0 1322 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1323 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1324 if (track.GetNumberOfClusters()<3) continue;
afd25725 1325 if (!constrain && track.GetNormChi2(2) >
1326 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1327 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1328 if (!constrain){
b9671574 1329 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1330 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1331 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1332 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1333 }
1334 }
15dd636f 1335 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1336 }
1337 }
81e97e0d 1338
afd25725 1339 if (!constrain) {
81e97e0d 1340 //
afd25725 1341 // register best track of each layer - important for V0 finder
81e97e0d 1342 //
1343 for (Int_t ilayer=0;ilayer<5;ilayer++){
1344 if (ntracks[ilayer]==0) continue;
1345 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1346 if (track.GetNumberOfClusters()<1) continue;
1347 CookLabel(&track,0);
1348 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1349 }
1350 }
1351 //
1352 // update TPC V0 information
1353 //
b9671574 1354 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1355 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1356 for (Int_t i=0;i<3;i++){
b9671574 1357 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1358 if (index==0) break;
44347160 1359 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1360 if (vertex->GetStatus()<0) continue; // rejected V0
1361 //
6c94f330 1362 if (otrack->GetSign()>0) {
81e97e0d 1363 vertex->SetIndex(0,esdindex);
1364 }
1365 else{
1366 vertex->SetIndex(1,esdindex);
1367 }
1368 //find nearest layer with track info
b75d63a7 1369 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1370 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1371 Int_t nearest = nearestold;
1372 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1373 if (ntracks[nearest]==0){
1374 nearest = ilayer;
1375 }
1376 }
1377 //
1378 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1379 if (nearestold<5&&nearest<5){
b9671574 1380 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1381 if (accept){
6c94f330 1382 if (track.GetSign()>0) {
b75d63a7 1383 vertex->SetParamP(track);
81e97e0d 1384 vertex->Update(fprimvertex);
44347160 1385 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1386 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1387 }else{
b75d63a7 1388 vertex->SetParamN(track);
81e97e0d 1389 vertex->Update(fprimvertex);
1390 //vertex->SetIndex(1,track.fESDtrack->GetID());
1391 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1392 }
1393 vertex->SetStatus(vertex->GetStatus()+1);
1394 }else{
44347160 1395 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1396 }
1397 }
81e97e0d 1398 }
afd25725 1399 }
1400
e43c066c 1401}
44347160 1402//------------------------------------------------------------------------
e43c066c 1403AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1404{
1405 //--------------------------------------------------------------------
1406 //
1407 //
1408 return fgLayers[layer];
1409}
44347160 1410//------------------------------------------------------------------------
8221b41b 1411AliITStrackerMI::AliITSlayer::AliITSlayer():
1412fR(0),
1413fPhiOffset(0),
1414fNladders(0),
1415fZOffset(0),
1416fNdetectors(0),
1417fDetectors(0),
1418fN(0),
1419fDy5(0),
1420fDy10(0),
1421fDy20(0),
1422fClustersCs(0),
1423fClusterIndexCs(0),
1424fYcs(0),
1425fZcs(0),
1426fNcs(0),
1427fCurrentSlice(-1),
d9ead1a0 1428fZmin(0),
8221b41b 1429fZmax(0),
1430fYmin(0),
1431fYmax(0),
1432fI(0),
1433fImax(0),
1434fSkip(0),
1435fAccepted(0),
d9ead1a0 1436fRoad(0),
1437fMaxSigmaClY(0),
1438fMaxSigmaClZ(0),
1439fNMaxSigmaCl(3)
1440{
e43c066c 1441 //--------------------------------------------------------------------
1442 //default AliITSlayer constructor
1443 //--------------------------------------------------------------------
e50912db 1444 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1445 fClusterWeight[i]=0;
1446 fClusterTracks[0][i]=-1;
1447 fClusterTracks[1][i]=-1;
1448 fClusterTracks[2][i]=-1;
1449 fClusterTracks[3][i]=-1;
1450 }
1451}
44347160 1452//------------------------------------------------------------------------
e43c066c 1453AliITStrackerMI::AliITSlayer::
8221b41b 1454AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1455fR(r),
1456fPhiOffset(p),
1457fNladders(nl),
1458fZOffset(z),
1459fNdetectors(nd),
1460fDetectors(0),
1461fN(0),
1462fDy5(0),
1463fDy10(0),
1464fDy20(0),
1465fClustersCs(0),
1466fClusterIndexCs(0),
1467fYcs(0),
1468fZcs(0),
1469fNcs(0),
1470fCurrentSlice(-1),
d9ead1a0 1471fZmin(0),
8221b41b 1472fZmax(0),
1473fYmin(0),
1474fYmax(0),
1475fI(0),
1476fImax(0),
1477fSkip(0),
1478fAccepted(0),
d9ead1a0 1479fRoad(0),
1480fMaxSigmaClY(0),
1481fMaxSigmaClZ(0),
1482fNMaxSigmaCl(3) {
e43c066c 1483 //--------------------------------------------------------------------
1484 //main AliITSlayer constructor
1485 //--------------------------------------------------------------------
e43c066c 1486 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1487 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1488}
44347160 1489//------------------------------------------------------------------------
8221b41b 1490AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1491fR(layer.fR),
1492fPhiOffset(layer.fPhiOffset),
1493fNladders(layer.fNladders),
1494fZOffset(layer.fZOffset),
1495fNdetectors(layer.fNdetectors),
1496fDetectors(layer.fDetectors),
1497fN(layer.fN),
1498fDy5(layer.fDy5),
1499fDy10(layer.fDy10),
1500fDy20(layer.fDy20),
1501fClustersCs(layer.fClustersCs),
1502fClusterIndexCs(layer.fClusterIndexCs),
1503fYcs(layer.fYcs),
1504fZcs(layer.fZcs),
1505fNcs(layer.fNcs),
1506fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1507fZmin(layer.fZmin),
8221b41b 1508fZmax(layer.fZmax),
1509fYmin(layer.fYmin),
1510fYmax(layer.fYmax),
1511fI(layer.fI),
1512fImax(layer.fImax),
1513fSkip(layer.fSkip),
1514fAccepted(layer.fAccepted),
d9ead1a0 1515fRoad(layer.fRoad),
1516fMaxSigmaClY(layer.fMaxSigmaClY),
1517fMaxSigmaClZ(layer.fMaxSigmaClZ),
1518fNMaxSigmaCl(layer.fNMaxSigmaCl)
1519{
8221b41b 1520 //Copy constructor
1521}
44347160 1522//------------------------------------------------------------------------
e43c066c 1523AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1524 //--------------------------------------------------------------------
1525 // AliITSlayer destructor
1526 //--------------------------------------------------------------------
23197852 1527 delete [] fDetectors;
e43c066c 1528 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1529 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1530 fClusterWeight[i]=0;
1531 fClusterTracks[0][i]=-1;
1532 fClusterTracks[1][i]=-1;
1533 fClusterTracks[2][i]=-1;
1534 fClusterTracks[3][i]=-1;
1535 }
1536}
44347160 1537//------------------------------------------------------------------------
e43c066c 1538void AliITStrackerMI::AliITSlayer::ResetClusters() {
1539 //--------------------------------------------------------------------
1540 // This function removes loaded clusters
1541 //--------------------------------------------------------------------
1542 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1543 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1544 fClusterWeight[i]=0;
1545 fClusterTracks[0][i]=-1;
1546 fClusterTracks[1][i]=-1;
1547 fClusterTracks[2][i]=-1;
1548 fClusterTracks[3][i]=-1;
1549 }
1550
1551 fN=0;
1552 fI=0;
1553}
44347160 1554//------------------------------------------------------------------------
e43c066c 1555void AliITStrackerMI::AliITSlayer::ResetWeights() {
1556 //--------------------------------------------------------------------
1557 // This function reset weights of the clusters
1558 //--------------------------------------------------------------------
e50912db 1559 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1560 fClusterWeight[i]=0;
1561 fClusterTracks[0][i]=-1;
1562 fClusterTracks[1][i]=-1;
1563 fClusterTracks[2][i]=-1;
1564 fClusterTracks[3][i]=-1;
1565 }
1566 for (Int_t i=0; i<fN;i++) {
00a7cc50 1567 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1568 if (cl&&cl->IsUsed()) cl->Use();
1569 }
1570
1571}
44347160 1572//------------------------------------------------------------------------
e43c066c 1573void AliITStrackerMI::AliITSlayer::ResetRoad() {
1574 //--------------------------------------------------------------------
1575 // This function calculates the road defined by the cluster density
1576 //--------------------------------------------------------------------
1577 Int_t n=0;
1578 for (Int_t i=0; i<fN; i++) {
1579 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1580 }
afd25725 1581 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1582}
44347160 1583//------------------------------------------------------------------------
afd25725 1584Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1585 //--------------------------------------------------------------------
1586 //This function adds a cluster to this layer
1587 //--------------------------------------------------------------------
e50912db 1588 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1589 ::Error("InsertCluster","Too many clusters !\n");
1590 return 1;
1591 }
1592 fCurrentSlice=-1;
afd25725 1593 fClusters[fN]=cl;
1d4090b7 1594 fN++;
afd25725 1595 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1596 //AD
1597 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1598 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1599 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1600 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1601 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1602 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1603 //AD
1604 /*
afd25725 1605 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1606 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1607 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1608 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1609 */
e43c066c 1610 return 0;
1611}
44347160 1612//------------------------------------------------------------------------
e43c066c 1613void AliITStrackerMI::AliITSlayer::SortClusters()
1614{
1615 //
1616 //sort clusters
1617 //
00a7cc50 1618 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1619 Float_t *z = new Float_t[fN];
1620 Int_t * index = new Int_t[fN];
1621 //
d9ead1a0 1622 fMaxSigmaClY=0.; //AD
1623 fMaxSigmaClZ=0.; //AD
1624
1d4090b7 1625 for (Int_t i=0;i<fN;i++){
1626 z[i] = fClusters[i]->GetZ();
d9ead1a0 1627 // save largest errors in y and z for this layer
1628 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1629 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1630 }
1631 TMath::Sort(fN,z,index,kFALSE);
1632 for (Int_t i=0;i<fN;i++){
1633 clusters[i] = fClusters[index[i]];
1634 }
1635 //
1636 for (Int_t i=0;i<fN;i++){
1637 fClusters[i] = clusters[i];
1638 fZ[i] = fClusters[i]->GetZ();
1639 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1640 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1641 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1642 fY[i] = y;
1643 }
1644 delete[] index;
1645 delete[] z;
1646 delete[] clusters;
1647 //
1648
e43c066c 1649 fYB[0]=10000000;
1650 fYB[1]=-10000000;
1651 for (Int_t i=0;i<fN;i++){
1652 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1653 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1654 fClusterIndex[i] = i;
1655 }
1656 //
1657 // fill slices
1658 fDy5 = (fYB[1]-fYB[0])/5.;
1659 fDy10 = (fYB[1]-fYB[0])/10.;
1660 fDy20 = (fYB[1]-fYB[0])/20.;
1661 for (Int_t i=0;i<6;i++) fN5[i] =0;
1662 for (Int_t i=0;i<11;i++) fN10[i]=0;
1663 for (Int_t i=0;i<21;i++) fN20[i]=0;
1664 //
1665 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;}
1666 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;}
1667 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;}
1668 //
1669 //
1d4090b7 1670 for (Int_t i=0;i<fN;i++)
1671 for (Int_t irot=-1;irot<=1;irot++){
1672 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1673 // slice 5
1674 for (Int_t slice=0; slice<6;slice++){
e50912db 1675 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1676 fClusters5[slice][fN5[slice]] = fClusters[i];
1677 fY5[slice][fN5[slice]] = curY;
1678 fZ5[slice][fN5[slice]] = fZ[i];
1679 fClusterIndex5[slice][fN5[slice]]=i;
1680 fN5[slice]++;
1681 }
e43c066c 1682 }
1d4090b7 1683 // slice 10
1684 for (Int_t slice=0; slice<11;slice++){
e50912db 1685 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1686 fClusters10[slice][fN10[slice]] = fClusters[i];
1687 fY10[slice][fN10[slice]] = curY;
1688 fZ10[slice][fN10[slice]] = fZ[i];
1689 fClusterIndex10[slice][fN10[slice]]=i;
1690 fN10[slice]++;
1691 }
e43c066c 1692 }
1d4090b7 1693 // slice 20
1694 for (Int_t slice=0; slice<21;slice++){
e50912db 1695 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1696 fClusters20[slice][fN20[slice]] = fClusters[i];
1697 fY20[slice][fN20[slice]] = curY;
1698 fZ20[slice][fN20[slice]] = fZ[i];
1699 fClusterIndex20[slice][fN20[slice]]=i;
1700 fN20[slice]++;
1701 }
1702 }
e43c066c 1703 }
1d4090b7 1704
1705 //
1706 // consistency check
1707 //
1708 for (Int_t i=0;i<fN-1;i++){
1709 if (fZ[i]>fZ[i+1]){
ae00569a 1710 printf("Bug\n");
e43c066c 1711 }
1712 }
1d4090b7 1713 //
1714 for (Int_t slice=0;slice<21;slice++)
1715 for (Int_t i=0;i<fN20[slice]-1;i++){
1716 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1717 printf("Bug\n");
1d4090b7 1718 }
1719 }
1720
1721
e43c066c 1722}
44347160 1723//------------------------------------------------------------------------
e43c066c 1724Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1725 //--------------------------------------------------------------------
1726 // This function returns the index of the nearest cluster
1727 //--------------------------------------------------------------------
1728 Int_t ncl=0;
1729 const Float_t *zcl;
1730 if (fCurrentSlice<0) {
1731 ncl = fN;
1732 zcl = fZ;
1733 }
1734 else{
1735 ncl = fNcs;
1736 zcl = fZcs;;
1737 }
1738
1739 if (ncl==0) return 0;
1740 Int_t b=0, e=ncl-1, m=(b+e)/2;
1741 for (; b<e; m=(b+e)/2) {
1742 // if (z > fClusters[m]->GetZ()) b=m+1;
1743 if (z > zcl[m]) b=m+1;
1744 else e=m;
1745 }
1746 return m;
1747}
44347160 1748//------------------------------------------------------------------------
1c97ce2f 1749Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1750 //--------------------------------------------------------------------
1751 // This function computes the rectangular road for this track
1752 //--------------------------------------------------------------------
1753
1754
1755 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1756 // take into account the misalignment: propagate track to misaligned detector plane
1757 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1758
1759 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1760 TMath::Sqrt(track->GetSigmaZ2() +
1761 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1762 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1763 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1764 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1765 TMath::Sqrt(track->GetSigmaY2() +
1766 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1767 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1768 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1769
1770 // track at boundary between detectors, enlarge road
1771 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1772 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1773 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1774 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1775 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1776 Float_t tgl = TMath::Abs(track->GetTgl());
1777 if (tgl > 1.) tgl=1.;
1778 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1779 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1780 Float_t snp = TMath::Abs(track->GetSnp());
1781 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1782 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1783 } // boundary
1784
1785 // add to the road a term (up to 2-3 mm) to deal with misalignments
1786 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1787 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1788
1789 Double_t r = fgLayers[ilayer].GetR();
1790 zmin = track->GetZ() - dz;
1791 zmax = track->GetZ() + dz;
1792 ymin = track->GetY() + r*det.GetPhi() - dy;
1793 ymax = track->GetY() + r*det.GetPhi() + dy;
1794
1795 // bring track back to idead detector plane
1796 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1797
1798 return kTRUE;
1799}
1800//------------------------------------------------------------------------
e43c066c 1801void AliITStrackerMI::AliITSlayer::
1802SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1803 //--------------------------------------------------------------------
1804 // This function sets the "window"
1805 //--------------------------------------------------------------------
1806
628e7bb0 1807 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1808 fYmin = ymin;
1809 fYmax = ymax;
1810 fZmin = zmin;
1811 fZmax = zmax;
1812 // AD
1813 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1814 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1815 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1816 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1817 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1818
e43c066c 1819 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1820 if (ymiddle<fYB[0]) {
1821 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1822 } else if (ymiddle>fYB[1]) {
1823 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1824 }
ae00569a 1825
e43c066c 1826 //
1827 fCurrentSlice =-1;
1828 // defualt take all
1829 fClustersCs = fClusters;
1830 fClusterIndexCs = fClusterIndex;
1831 fYcs = fY;
1832 fZcs = fZ;
1833 fNcs = fN;
628e7bb0 1834 //
e43c066c 1835 //is in 20 slice?
1836 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1837 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1838 if (slice<0) slice=0;
1839 if (slice>20) slice=20;
1840 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1841 if (isOK) {
1842 fCurrentSlice=slice;
1843 fClustersCs = fClusters20[fCurrentSlice];
1844 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1845 fYcs = fY20[fCurrentSlice];
1846 fZcs = fZ20[fCurrentSlice];
1847 fNcs = fN20[fCurrentSlice];
1848 }
1849 }
1850 //
1851 //is in 10 slice?
1852 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1853 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1854 if (slice<0) slice=0;
1855 if (slice>10) slice=10;
1856 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1857 if (isOK) {
1858 fCurrentSlice=slice;
1859 fClustersCs = fClusters10[fCurrentSlice];
1860 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1861 fYcs = fY10[fCurrentSlice];
1862 fZcs = fZ10[fCurrentSlice];
1863 fNcs = fN10[fCurrentSlice];
1864 }
1865 }
1866 //
1867 //is in 5 slice?
1868 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1869 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1870 if (slice<0) slice=0;
1871 if (slice>5) slice=5;
1872 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1873 if (isOK) {
e43c066c 1874 fCurrentSlice=slice;
1875 fClustersCs = fClusters5[fCurrentSlice];
1876 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1877 fYcs = fY5[fCurrentSlice];
1878 fZcs = fZ5[fCurrentSlice];
1879 fNcs = fN5[fCurrentSlice];
1880 }
1881 }
628e7bb0 1882 //
d9ead1a0 1883 fI = FindClusterIndex(fZmin);
1884 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1885 fSkip = 0;
1886 fAccepted = 0;
6518a6c5 1887
1888 return;
e43c066c 1889}
44347160 1890//------------------------------------------------------------------------
628e7bb0 1891Int_t AliITStrackerMI::AliITSlayer::
1892FindDetectorIndex(Double_t phi, Double_t z) const {
1893 //--------------------------------------------------------------------
1894 //This function finds the detector crossed by the track
1895 //--------------------------------------------------------------------
31fb8575 1896 Double_t dphi;
1897 if (fZOffset<0) // old geometry
1898 dphi = -(phi-fPhiOffset);
1899 else // new geometry
1900 dphi = phi-fPhiOffset;
1901
6518a6c5 1902
628e7bb0 1903 if (dphi < 0) dphi += 2*TMath::Pi();
1904 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1905 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1906 if (np>=fNladders) np-=fNladders;
1907 if (np<0) np+=fNladders;
1908
6518a6c5 1909
628e7bb0 1910 Double_t dz=fZOffset-z;
6518a6c5 1911 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1912 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1913 if (nz>=fNdetectors) return -1;
1914 if (nz<0) return -1;
1915
23197852 1916 // ad hoc correction for 3rd ladder of SDD inner layer,
1917 // which is reversed (rotated by pi around local y)
1918 // this correction is OK only from AliITSv11Hybrid onwards
1919 if (GetR()>12. && GetR()<20.) { // SDD inner
1920 if(np==2) { // 3rd ladder
1921 nz = (fNdetectors-1) - nz;
1922 }
1923 }
1924 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1925
1926
628e7bb0 1927 return np*fNdetectors + nz;
1928}
44347160 1929//------------------------------------------------------------------------
ae00569a 1930const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1931{
e43c066c 1932 //--------------------------------------------------------------------
1933 // This function returns clusters within the "window"
1934 //--------------------------------------------------------------------
1935
ae00569a 1936 if (fCurrentSlice<0) {
e43c066c 1937 Double_t rpi2 = 2.*fR*TMath::Pi();
1938 for (Int_t i=fI; i<fImax; i++) {
1939 Double_t y = fY[i];
d9ead1a0 1940 Double_t z = fZ[i];
e43c066c 1941 if (fYmax<y) y -= rpi2;
1d4090b7 1942 if (fYmin>y) y += rpi2;
e43c066c 1943 if (y<fYmin) continue;
1944 if (y>fYmax) continue;
d9ead1a0 1945 // AD
1946 // skip clusters that are in "extended" road but they
1947 // 3sigma error does not touch the original road
1948 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1949 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1950 //
e43c066c 1951 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1952 ci=i;
ae00569a 1953 if (!test) fI=i+1;
e43c066c 1954 return fClusters[i];
1955 }
ae00569a 1956 } else {
e43c066c 1957 for (Int_t i=fI; i<fImax; i++) {
1958 if (fYcs[i]<fYmin) continue;
1959 if (fYcs[i]>fYmax) continue;
1960 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1961 ci=fClusterIndexCs[i];
ae00569a 1962 if (!test) fI=i+1;
e43c066c 1963 return fClustersCs[i];
1964 }
1965 }
1966 return 0;
1967}
44347160 1968//------------------------------------------------------------------------
e43c066c 1969Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1970const {
1971 //--------------------------------------------------------------------
afd25725 1972 // This function returns the layer thickness at this point (units X0)
e43c066c 1973 //--------------------------------------------------------------------
1974 Double_t d=0.0085;
e50912db 1975 x0=AliITSRecoParam::GetX0Air();
e43c066c 1976 if (43<fR&&fR<45) { //SSD2
1977 Double_t dd=0.0034;
1978 d=dd;
1979 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1980 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1981 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1982 for (Int_t i=0; i<12; i++) {
1983 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1984 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1985 d+=0.0034;
1986 break;
1987 }
1988 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1989 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1990 d+=0.0034;
1991 break;
1992 }
1993 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1994 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1995 }
1996 } else
1997 if (37<fR&&fR<41) { //SSD1
1998 Double_t dd=0.0034;
1999 d=dd;
2000 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2001 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2002 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2003 for (Int_t i=0; i<11; i++) {
2004 if (TMath::Abs(z-3.9*i)<0.15) {
2005 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2006 d+=dd;
2007 break;
2008 }
2009 if (TMath::Abs(z+3.9*i)<0.15) {
2010 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2011 d+=dd;
2012 break;
2013 }
2014 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2015 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2016 }
2017 } else
2018 if (13<fR&&fR<26) { //SDD
2019 Double_t dd=0.0033;
2020 d=dd;
2021 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2022
2023 if (TMath::Abs(y-1.80)<0.55) {
2024 d+=0.016;
2025 for (Int_t j=0; j<20; j++) {
2026 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2027 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2028 }
2029 }
2030 if (TMath::Abs(y+1.80)<0.55) {
2031 d+=0.016;
2032 for (Int_t j=0; j<20; j++) {
2033 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2034 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2035 }
2036 }
2037
2038 for (Int_t i=0; i<4; i++) {
2039 if (TMath::Abs(z-7.3*i)<0.60) {
2040 d+=dd;
2041 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2042 break;
2043 }
2044 if (TMath::Abs(z+7.3*i)<0.60) {
2045 d+=dd;
2046 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2047 break;
2048 }
2049 }
2050 } else
2051 if (6<fR&&fR<8) { //SPD2
2052 Double_t dd=0.0063; x0=21.5;
2053 d=dd;
2054 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2055 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2056 } else
2057 if (3<fR&&fR<5) { //SPD1
2058 Double_t dd=0.0063; x0=21.5;
2059 d=dd;
2060 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2061 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2062 }
2063
2064 return d;
2065}
44347160 2066//------------------------------------------------------------------------
23197852 2067AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2068fR(det.fR),
1c97ce2f 2069fRmisal(det.fRmisal),
23197852 2070fPhi(det.fPhi),
2071fSinPhi(det.fSinPhi),
2072fCosPhi(det.fCosPhi),
2073fYmin(det.fYmin),
2074fYmax(det.fYmax),
2075fZmin(det.fZmin),
2076fZmax(det.fZmax),
2077fIsBad(det.fIsBad),
2078fNChips(det.fNChips),
2079fChipIsBad(det.fChipIsBad)
2080{
2081 //Copy constructor
2082}
2083//------------------------------------------------------------------------
2084void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2085 const AliITSDetTypeRec *detTypeRec)
23197852 2086{
2087 //--------------------------------------------------------------------
2088 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2089 //--------------------------------------------------------------------
2090
2091 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2092 // while in the tracker they start from 0 for each layer
2093 for(Int_t il=0; il<ilayer; il++)
2094 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2095
2096 Int_t detType;
2097 if (ilayer==0 || ilayer==1) { // ---------- SPD
2098 detType = 0;
2099 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2100 detType = 1;
2101 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2102 detType = 2;
2103 } else {
2104 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2105 return;
2106 }
2107
2108 // Get calibration from AliITSDetTypeRec
2109 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2110 calib->SetModuleIndex(idet);
23197852 2111 AliITSCalibration *calibSPDdead = 0;
2112 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2113 if (calib->IsBad() ||
2114 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2115 {
2116 SetBad();
359ac74d 2117 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2118 }
2119
2120 // Get segmentation from AliITSDetTypeRec
2121 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2122
2123 // Read info about bad chips
2124 fNChips = segm->GetMaximumChipIndex()+1;
2125 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2126 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2127 fChipIsBad = new Bool_t[fNChips];
2128 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2129 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2130 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2131 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2132 }
2133
2134 return;
2135}
2136//------------------------------------------------------------------------
e50912db 2137Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2138{
2139 //--------------------------------------------------------------------
afd25725 2140 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2141 //--------------------------------------------------------------------
e43c066c 2142
e50912db 2143 if(fUseTGeo!=0) {
2144 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2145 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2146 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2147 }
2148
afd25725 2149 // beam pipe
e50912db 2150 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2151 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2152
2153 // layers
2154 Double_t x0=0;
e43c066c 2155 Double_t xn=fgLayers[fI].GetR();
2156 for (Int_t i=0; i<fI; i++) {
2157 Double_t xi=fgLayers[i].GetR();
e50912db 2158 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2159 d+=dLayer*xi*xi;
e43c066c 2160 }
2161
afd25725 2162 // shields
e43c066c 2163 if (fI>1) {
e50912db 2164 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2165 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2166 }
e43c066c 2167 if (fI>3) {
e50912db 2168 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2169 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2170 }
e43c066c 2171 return d/(xn*xn);
2172}
44347160 2173//------------------------------------------------------------------------
e43c066c 2174Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2175 //-------------------------------------------------------------------
e43c066c 2176 // This function returns number of clusters within the "window"
2177 //--------------------------------------------------------------------
2178 Int_t ncl=0;
2179 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2180 const AliITSRecPoint *c=fClusters[i];
e43c066c 2181 if (c->GetZ() > fZmax) break;
2182 if (c->IsUsed()) continue;
2183 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2184 Double_t y=fR*det.GetPhi() + c->GetY();
2185
2186 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2187 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2188
2189 if (y<fYmin) continue;
2190 if (y>fYmax) continue;
2191 ncl++;
2192 }
2193 return ncl;
2194}
44347160 2195//------------------------------------------------------------------------
ae00569a 2196Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2197 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2198{
e43c066c 2199 //--------------------------------------------------------------------
ae00569a 2200 // This function refits the track "track" at the position "x" using
2201 // the clusters from "clusters"
ef7253ac 2202 // If "extra"==kTRUE,
ae00569a 2203 // the clusters from overlapped modules get attached to "track"
7167ae53 2204 // If "planeff"==kTRUE,
2205 // special approach for plane efficiency evaluation is applyed
e43c066c 2206 //--------------------------------------------------------------------
6518a6c5 2207
e50912db 2208 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2209 Int_t k;
e50912db 2210 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2211 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2212 for (k=0; k<nc; k++) {
ae00569a 2213 Int_t idx=clusters->GetClusterIndex(k);
2214 Int_t ilayer=(idx&0xf0000000)>>28;
2215 index[ilayer]=idx;
e43c066c 2216 }
67c1e979 2217
7167ae53 2218 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2219}
44347160 2220//------------------------------------------------------------------------
ae00569a 2221Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2222 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2223{
67c1e979 2224 //--------------------------------------------------------------------
ae00569a 2225 // This function refits the track "track" at the position "x" using
67c1e979 2226 // the clusters from array
ae00569a 2227 // If "extra"==kTRUE,
2228 // the clusters from overlapped modules get attached to "track"
7167ae53 2229 // If "planeff"==kTRUE,
2230 // special approach for plane efficiency evaluation is applyed
67c1e979 2231 //--------------------------------------------------------------------
e50912db 2232 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2233 Int_t k;
e50912db 2234 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2235 //
e50912db 2236 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2237 index[k]=clusters[k];
67c1e979 2238 }
2239
afd25725 2240 // special for cosmics: check which the innermost layer crossed
2241 // by the track
2242 Int_t innermostlayer=5;
ae00569a 2243 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2244 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2245 if(drphi < fgLayers[innermostlayer].GetR()) break;
2246 }
4fa7f7d1 2247 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
afd25725 2248
ae00569a 2249 Int_t modstatus=1; // found
2250 Float_t xloc,zloc;
67c1e979 2251 Int_t from, to, step;
ae00569a 2252 if (xx > track->GetX()) {
e50912db 2253 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2254 step=+1;
2255 } else {
e50912db 2256 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2257 step=-1;
2258 }
ae00569a 2259 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2260
ae00569a 2261 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2262 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2263 Double_t r=layer.GetR();
4fa7f7d1 2264
afd25725 2265 if (step<0 && xx>r) break;
2266
2267 // material between SSD and SDD, SDD and SPD
6518a6c5 2268 Double_t hI=ilayer-0.5*step;
e50912db 2269 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2270 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2271 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2272 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2273
ae00569a 2274
afd25725 2275 Double_t oldGlobXYZ[3];
d1181f10 2276 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2277
67178f34 2278 // continue if we are already beyond this layer
2279 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2280 if(step>0 && oldGlobR > r) continue; // going outward
2281 if(step<0 && oldGlobR < r) continue; // going inward
2282
8602c008 2283 Double_t phi,z;
ae00569a 2284 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2285
67c1e979 2286 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2287
2288 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2289 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2290 if (skip==2) {
ae00569a 2291 modstatus = 4; // out in z
d1181f10 2292 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2293 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2294 }
7131593b 2295 // cross layer
2296 // apply correction for material of the current layer
2297 // add time if going outward
2298 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2299 continue;
2300 }
2301
e50912db 2302 if (idet<0) return kFALSE;
ae00569a 2303
4fa7f7d1 2304
67c1e979 2305 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2306 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2307
ae00569a 2308 track->SetDetectorIndex(idet);
d1181f10 2309 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2310
23197852 2311 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2312
2313 const AliITSRecPoint *clAcc=0;
44347160 2314 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2315
6518a6c5 2316 Int_t idx=index[ilayer];
ae00569a 2317 if (idx>=0) { // cluster in this layer
2318 modstatus = 6; // no refit
2319 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2320 if (cl) {
2321 if (idet != cl->GetDetectorIndex()) {
2322 idet=cl->GetDetectorIndex();
a5d0fae6 2323 const AliITSdetector &detc=layer.GetDetector(idet);
2324 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2325 track->SetDetectorIndex(idet);
d1181f10 2326 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2327 }
ae00569a 2328 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2329 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2330 if (chi2<maxchi2) {
2331 clAcc=cl;
2332 maxchi2=chi2;
2333 modstatus = 1; // found
2334 } else {
7167ae53 2335 return kFALSE; //
ae00569a 2336 }
2337 }
2338 } else { // no cluster in this layer
2339 if (skip==1) {
2340 modstatus = 3; // skipped
0ed58a47 2341 // Plane Eff determination:
2342 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2343 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2344 UseTrackForPlaneEff(track,ilayer);
7167ae53 2345 }
ae00569a 2346 } else {
2347 modstatus = 5; // no cls in road
2348 // check dead
1c97ce2f 2349 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2350 dz = 0.5*(zmax-zmin);
2351 dy = 0.5*(ymax-ymin);
2352 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2353 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2354 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2355 }
e43c066c 2356 }
ae00569a 2357
2358 if (clAcc) {
2359 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2360 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2361 }
ae00569a 2362 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2363
2364
2365 if (extra) { // search for extra clusters in overlapped modules
2366 AliITStrackV2 tmp(*track);
1c97ce2f 2367 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2368 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2369
2370 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2371 Int_t idetExtra=-1;
a5d0fae6 2372 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2373 Double_t tolerance=0.1;
ae00569a 2374 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2375 // only clusters in another module! (overlaps)
2376 idetExtra = clExtra->GetDetectorIndex();
2377 if (idet == idetExtra) continue;
2378
a5d0fae6 2379 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2380
1c97ce2f 2381 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2382 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2383 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2384 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2385
2386 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2387 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2388 }
2389 if (cci>=0) {
2390 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2391 track->SetExtraModule(ilayer,idetExtra);
2392 }
2393 } // end search for extra clusters in overlapped modules
1c97ce2f 2394
afd25725 2395 // Correct for material of the current layer
7131593b 2396 // cross material
2397 // add time if going outward
ae00569a 2398 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2399
ae00569a 2400 } // end loop on layers
2401
db355ee7 2402 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2403
e43c066c 2404 return kTRUE;
2405}
44347160 2406//------------------------------------------------------------------------
15dd636f 2407Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2408{
2409 //
2410 // calculate normalized chi2
2411 // return NormalizedChi2(track,0);
2412 Float_t chi2 = 0;
2413 Float_t sum=0;
2414 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2415 // track->fdEdxMismatch=0;
2416 Float_t dedxmismatch =0;
2417 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2418 if (mode<100){
2419 for (Int_t i = 0;i<6;i++){
9fd412a8 2420 if (track->GetClIndex(i)>=0){
e43c066c 2421 Float_t cerry, cerrz;
2422 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2423 else
b9671574 2424 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2425 cerry*=cerry;
2426 cerrz*=cerrz;
b9671574 2427 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2428 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2429 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2430 if (ratio<0.5) {
2431 cchi2+=(0.5-ratio)*10.;
2432 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2433 dedxmismatch+=(0.5-ratio)*10.;
2434 }
2435 }
2436 if (i<2 ||i>3){
b9671574 2437 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2438 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2439 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2440 if (i<2) chi2+=2*cl->GetDeltaProbability();
2441 }
2442 chi2+=cchi2;
2443 sum++;
2444 }
2445 }
b9671574 2446 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2447 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2448 }
2449 }
2450 else{
2451 for (Int_t i = 0;i<4;i++){
9fd412a8 2452 if (track->GetClIndex(i)>=0){
e43c066c 2453 Float_t cerry, cerrz;
2454 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2455 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2456 cerry*=cerry;
2457 cerrz*=cerrz;
b9671574 2458 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2459 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2460 sum++;
2461 }
2462 }
2463 for (Int_t i = 4;i<6;i++){
9fd412a8 2464 if (track->GetClIndex(i)>=0){
e43c066c 2465 Float_t cerry, cerrz;
2466 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2467 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2468 cerry*=cerry;
2469 cerrz*=cerrz;
2470 Float_t cerryb, cerrzb;
2471 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2472 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2473 cerryb*=cerryb;
2474 cerrzb*=cerrzb;
b9671574 2475 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2476 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2477 sum++;
2478 }
2479 }
2480 }
b9671574 2481 if (track->GetESDtrack()->GetTPCsignal()>85){
2482 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2483 if (ratio<0.5) {
2484 chi2+=(0.5-ratio)*5.;
2485 }
2486 if (ratio>2){
2487 chi2+=(ratio-2.0)*3;
2488 }
2489 }
2490 //
b9671574 2491 Double_t match = TMath::Sqrt(track->GetChi22());
2492 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2493 if (!track->GetConstrain()) {
2494 if (track->GetNumberOfClusters()>2) {
2495 match/=track->GetNumberOfClusters()-2.;
2496 } else {
2497 match=0;
2498 }
2499 }
e43c066c 2500 if (match<0) match=0;
f8720bda 2501
2502 // penalty factor for missing points (NDeadZone>0), but no penalty
2503 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2504 // or there is a dead from OCDB)
2505 Float_t deadzonefactor = 0.;
2506 if (track->GetNDeadZone()>0.) {
2507 Float_t sumDeadZoneProbability=0;
2508 for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay);
2509 Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2510 if(nDeadZoneWithProbNot1>0.) {
2511 Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability);
2512 deadZoneProbability /= nDeadZoneWithProbNot1;
2513 deadzonefactor = 3.*(1.1-deadZoneProbability);
2514 }
2515 }
2516
b9671574 2517 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2518 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2519 1./(1.+track->GetNSkipped()));
e43c066c 2520
2521 return normchi2;
2522}
44347160 2523//------------------------------------------------------------------------
a70ed6ad 2524Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2525{
2526 //
2527 // return matching chi2 between two tracks
d1181f10 2528 Double_t largeChi2=1000.;
2529
15dd636f 2530 AliITStrackMI track3(*track2);
d1181f10 2531 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2532 TMatrixD vec(5,1);
6c94f330 2533 vec(0,0)=track1->GetY() - track3.GetY();
2534 vec(1,0)=track1->GetZ() - track3.GetZ();
2535 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2536 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2537 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2538 //
2539 TMatrixD cov(5,5);
6c94f330 2540 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2541 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2542 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2543 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2544 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2545
6c94f330 2546 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2547 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2548 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2549 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2550 //
6c94f330 2551 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2552 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2553 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2554 //
6c94f330 2555 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2556 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2557 //
6c94f330 2558 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2559
2560 cov.Invert();
2561 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2562 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2563 return chi2(0,0);
2564}
44347160 2565//------------------------------------------------------------------------
a70ed6ad 2566Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2567{
2568 //
afd25725 2569 // return probability that given point (characterized by z position and error)
2570 // is in SPD dead zone
e43c066c 2571 //
afd25725 2572 Double_t probability = 0.;
e43c066c 2573 Double_t absz = TMath::Abs(zpos);
afd25725 2574 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2575 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2576 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2577 Double_t zmin, zmax;
2578 if (zpos<-6.) { // dead zone at z = -7
e50912db 2579 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2580 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2581 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2582 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2583 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2584 } else if (absz<2.) { // dead zone at z = 0
e50912db 2585 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2586 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2587 } else {
2588 zmin = 0.;
2589 zmax = 0.;
e43c066c 2590 }
afd25725 2591 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2592 // dead zone)
2593 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2594 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2595 return probability;
2596}
44347160 2597//------------------------------------------------------------------------
a70ed6ad 2598Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2599{
2600 //
2601 // calculate normalized chi2
2602 Float_t chi2[6];
2603 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2604 Float_t ncl = 0;
2605 for (Int_t i = 0;i<6;i++){
b9671574 2606 if (TMath::Abs(track->GetDy(i))>0){
2607 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2608 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2609 ncl++;
2610 }
2611 else{chi2[i]=10000;}
2612 }
2613 Int_t index[6];
2614 TMath::Sort(6,chi2,index,kFALSE);
2615 Float_t max = float(ncl)*fac-1.;
2616 Float_t sumchi=0, sumweight=0;
2617 for (Int_t i=0;i<max+1;i++){
2618 Float_t weight = (i<max)?1.:(max+1.-i);
2619 sumchi+=weight*chi2[index[i]];
2620 sumweight+=weight;
2621 }
2622 Double_t normchi2 = sumchi/sumweight;
2623 return normchi2;
2624}
44347160 2625//------------------------------------------------------------------------
a70ed6ad 2626Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2627{
2628 //
2629 // calculate normalized chi2
2630 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2631 Int_t npoints = 0;
2632 Double_t res =0;
2633 for (Int_t i=0;i<6;i++){
b9671574 2634 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2635 Double_t sy1 = forwardtrack->GetSigmaY(i);
2636 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2637 Double_t sy2 = backtrack->GetSigmaY(i);
2638 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2639 if (i<2){ sy2=1000.;sz2=1000;}
2640 //
b9671574 2641 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2642 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2643 //
2644 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2645 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2646 //
2647 res+= nz0*nz0+ny0*ny0;
2648 npoints++;
2649 }
2650 if (npoints>1) return
6c23ffed 2651 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2652 //2*forwardtrack->fNUsed+
b9671574 2653 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2654 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2655 return 1000;
2656}
44347160 2657//------------------------------------------------------------------------
e43c066c 2658Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2659 //--------------------------------------------------------------------
2660 // Return pointer to a given cluster
2661 //--------------------------------------------------------------------
2662 Int_t l=(index & 0xf0000000) >> 28;
2663 Int_t c=(index & 0x0fffffff) >> 00;
2664 return fgLayers[l].GetWeight(c);
2665}
44347160 2666//------------------------------------------------------------------------
a70ed6ad 2667void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2668{
2669 //---------------------------------------------
2670 // register track to the list
628e7bb0 2671 //
b9671574 2672 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2673 //
2674 //
e43c066c 2675 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2676 Int_t index = track->GetClusterIndex(icluster);
2677 Int_t l=(index & 0xf0000000) >> 28;
2678 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2679 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2680 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2681 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2682 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2683 break;
2684 }
2685 }
2686 }
2687}
44347160 2688//------------------------------------------------------------------------
a70ed6ad 2689void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2690{
2691 //---------------------------------------------
2692 // unregister track from the list
2693 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2694 Int_t index = track->GetClusterIndex(icluster);
2695 Int_t l=(index & 0xf0000000) >> 28;
2696 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2697 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2698 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2699 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2700 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2701 }
2702 }
2703 }
2704}
44347160 2705//------------------------------------------------------------------------
00a7cc50 2706Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2707{
2708 //-------------------------------------------------------------
2709 //get number of shared clusters
2710 //-------------------------------------------------------------
2711 Float_t shared=0;
2712 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2713 // mean number of clusters
2714 Float_t *ny = GetNy(id), *nz = GetNz(id);
2715
2716
2717 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2718 Int_t index = track->GetClusterIndex(icluster);
2719 Int_t l=(index & 0xf0000000) >> 28;
2720 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2721 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2722 if (ny[l]==0){
2723 printf("problem\n");
2724 }
00a7cc50 2725 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2726 Float_t weight=1;
2727 //
2728 Float_t deltan = 0;
2729 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2730 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2731 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2732 if (l<2 || l>3){
2733 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2734 }
2735 else{
2736 deltan = (cl->GetNz()-nz[l]);
2737 }
2738 if (deltan>2.0) continue; // extended - highly probable shared cluster
2739 weight = 2./TMath::Max(3.+deltan,2.);
2740 //
2741 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2742 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2743 list[l]=index;
00a7cc50 2744 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2745 shared+=weight;
2746 break;
2747 }
2748 }
2749 }
b9671574 2750 track->SetNUsed(shared);
e43c066c 2751 return shared;
2752}
44347160 2753//------------------------------------------------------------------------
a70ed6ad 2754Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2755{
2756 //
2757 // find first shared track
2758 //
2759 // mean number of clusters
2760 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2761 //
2762 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2763 Int_t sharedtrack=100000;
2764 Int_t tracks[24],trackindex=0;
2765 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2766 //
2767 for (Int_t icluster=0;icluster<6;icluster++){
2768 if (clusterlist[icluster]<0) continue;
2769 Int_t index = clusterlist[icluster];
2770 Int_t l=(index & 0xf0000000) >> 28;
2771 Int_t c=(index & 0x0fffffff) >> 00;
2772 if (ny[l]==0){
2773 printf("problem\n");
2774 }
b9671574 2775 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2776 //if (l>3) continue;
00a7cc50 2777 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2778 //
2779 Float_t deltan = 0;
2780 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2781 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2782 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2783 if (l<2 || l>3){
2784 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2785 }
2786 else{
2787 deltan = (cl->GetNz()-nz[l]);
2788 }
2789 if (deltan>2.0) continue; // extended - highly probable shared cluster
2790 //
2791 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2792 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2793 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2794 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2795 trackindex++;
2796 }
2797 }
2798 }
2799 if (trackindex==0) return -1;
2800 if (trackindex==1){
2801 sharedtrack = tracks[0];
2802 }else{
2803 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2804 else{
2805 //
a5d0fae6 2806 Int_t tracks2[24], cluster[24];
2807 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2808 Int_t index =0;
2809 //
2810 for (Int_t i=0;i<trackindex;i++){
2811 if (tracks[i]<0) continue;
a5d0fae6 2812 tracks2[index] = tracks[i];
e43c066c 2813 cluster[index]++;
2814 for (Int_t j=i+1;j<trackindex;j++){
2815 if (tracks[j]<0) continue;
2816 if (tracks[j]==tracks[i]){
2817 cluster[index]++;
2818 tracks[j]=-1;
2819 }
2820 }
2821 index++;
2822 }
2823 Int_t max=0;
2824 for (Int_t i=0;i<index;i++){
2825 if (cluster[index]>max) {
a5d0fae6 2826 sharedtrack=tracks2[index];
e43c066c 2827 max=cluster[index];
2828 }
2829 }
2830 }
2831 }
2832
2833 if (sharedtrack>=100000) return -1;
2834 //
2835 // make list of overlaps
2836 shared =0;
2837 for (Int_t icluster=0;icluster<6;icluster++){
2838 if (clusterlist[icluster]<0) continue;
2839 Int_t index = clusterlist[icluster];
2840 Int_t l=(index & 0xf0000000) >> 28;
2841 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2842 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2843 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2844 if (l==0 || l==1){
2845 if (cl->GetNy()>2) continue;
2846 if (cl->GetNz()>2) continue;
2847 }
2848 if (l==4 || l==5){
2849 if (cl->GetNy()>3) continue;
2850 if (cl->GetNz()>3) continue;
2851 }
2852 //
2853 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2854 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2855 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2856 overlist[l]=index;
2857 shared++;
2858 }
2859 }
2860 }
2861 return sharedtrack;
2862}
44347160 2863//------------------------------------------------------------------------
15dd636f 2864AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2865 //
2866 // try to find track hypothesys without conflicts
2867 // with minimal chi2;
2868 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2869 Int_t entries1 = arr1->GetEntriesFast();
2870 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2871 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2872 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2873 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2874 //
15dd636f 2875 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2876 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2877 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2878
2879 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2880 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2881 UnRegisterClusterTracks(track,trackID1);
2882 }
2883 //
2884 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2885 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2886 UnRegisterClusterTracks(track,trackID2);
2887 }
2888 Int_t index1=0;
2889 Int_t index2=0;
2890 Float_t maxconflicts=6;
2891 Double_t maxchi2 =1000.;
2892 //
2893 // get weight of hypothesys - using best hypothesy
2894 Double_t w1,w2;
2895
2896 Int_t list1[6],list2[6];
00a7cc50 2897 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2898 RegisterClusterTracks(track10,trackID1);
2899 RegisterClusterTracks(track20,trackID2);
2900 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2901 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2902 UnRegisterClusterTracks(track10,trackID1);
2903 UnRegisterClusterTracks(track20,trackID2);
2904 //
2905 // normalized chi2
2906 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2907 Float_t nerry[6],nerrz[6];
2908 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2909 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2910 for (Int_t i=0;i<6;i++){
2911 if ( (erry1[i]>0) && (erry2[i]>0)) {
2912 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2913 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2914 }else{
2915 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2916 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2917 }
b9671574 2918 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2919 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2920 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2921 ncl1++;
2922 }
b9671574 2923 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2924 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2925 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2926 ncl2++;
2927 }
2928 }
2929 chi21/=ncl1;
2930 chi22/=ncl2;
2931 //
2932 //
b9671574 2933 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2934 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2935 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2936 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2937 //
2938 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2939 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2940 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2941 );
2942 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2943 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2944 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2945 );
2946
2947 Double_t sumw = w1+w2;
2948 w1/=sumw;
2949 w2/=sumw;
2950 if (w1<w2*0.5) {
2951 w1 = (d2+0.5)/(d1+d2+1.);
2952 w2 = (d1+0.5)/(d1+d2+1.);
2953 }
2954 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2955 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2956 //
2957 // get pair of "best" hypothesys
2958 //
2959 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2960 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2961
2962 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2963 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2964 //if (track1->fFakeRatio>0) continue;
2965 RegisterClusterTracks(track1,trackID1);
2966 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2967 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2968
2969 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2970 //if (track2->fFakeRatio>0) continue;
2971 Float_t nskipped=0;
2972 RegisterClusterTracks(track2,trackID2);
e43c066c 2973 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2974 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2975 UnRegisterClusterTracks(track2,trackID2);
2976 //
b9671574 2977 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2978 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2979 if (nskipped>0.5) continue;
2980 //
2981 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2982 if (conflict1+1<cconflict1) continue;
2983 if (conflict2+1<cconflict2) continue;
2984 Float_t conflict=0;
2985 Float_t sumchi2=0;
2986 Float_t sum=0;
2987 for (Int_t i=0;i<6;i++){
2988 //
2989 Float_t c1 =0.; // conflict coeficients
2990 Float_t c2 =0.;
2991 if (clist1[i]&&clist2[i]){
2992 Float_t deltan = 0;
2993 if (i<2 || i>3){
2994 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2995 }
2996 else{
2997 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2998 }
2999 c1 = 2./TMath::Max(3.+deltan,2.);
3000 c2 = 2./TMath::Max(3.+deltan,2.);
3001 }
3002 else{
3003 if (clist1[i]){
3004 Float_t deltan = 0;
3005 if (i<2 || i>3){
3006 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3007 }
3008 else{
3009 deltan = (clist1[i]->GetNz()-nz1[i]);
3010 }
3011 c1 = 2./TMath::Max(3.+deltan,2.);
3012 c2 = 0;
3013 }
3014
3015 if (clist2[i]){
3016 Float_t deltan = 0;
3017 if (i<2 || i>3){
3018 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3019 }
3020 else{
3021 deltan = (clist2[i]->GetNz()-nz2[i]);
3022 }
3023 c2 = 2./TMath::Max(3.+deltan,2.);
3024 c1 = 0;
3025 }
3026 }
3027 //
a5d0fae6 3028 chi21=0;chi22=0;
b9671574 3029 if (TMath::Abs(track1->GetDy(i))>0.) {
3030 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3031 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3032 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3033 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3034 }else{
b9671574 3035 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3036 }
3037 //
b9671574 3038 if (TMath::Abs(track2->GetDy(i))>0.) {
3039 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3040 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3041 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3042 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3043 }
3044 else{
b9671574 3045 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3046 }
3047 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3048 if (chi21>0) sum+=w1;
3049 if (chi22>0) sum+=w2;
3050 conflict+=(c1+c2);
3051 }
b9671574 3052 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3053 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3054 Double_t normchi2 = 2*conflict+sumchi2/sum;
3055 if ( normchi2 <maxchi2 ){
3056 index1 = itrack1;
3057 index2 = itrack2;
3058 maxconflicts = conflict;
3059 maxchi2 = normchi2;
3060 }
3061 }
3062 UnRegisterClusterTracks(track1,trackID1);
3063 }
3064 //
3065 // if (maxconflicts<4 && maxchi2<th0){
3066 if (maxchi2<th0*2.){
b9671574 3067 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3068 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3069 track1->SetChi2MIP(5,maxconflicts);
3070 track1->SetChi2MIP(6,maxchi2);
3071 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3072 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3073 track1->SetChi2MIP(8,index1);
e43c066c 3074 fBestTrackIndex[trackID1] =index1;
3075 UpdateESDtrack(track1, AliESDtrack::kITSin);
3076 }
b9671574 3077 else if (track10->GetChi2MIP(0)<th1){
3078 track10->SetChi2MIP(5,maxconflicts);
3079 track10->SetChi2MIP(6,maxchi2);
e43c066c 3080 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3081 UpdateESDtrack(track10,AliESDtrack::kITSin);
3082 }
3083
3084 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3085 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3086 UnRegisterClusterTracks(track,trackID1);
3087 }
3088 //
3089 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3090 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3091 UnRegisterClusterTracks(track,trackID2);
3092 }
3093
44347160 3094 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3095 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3096 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3097 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3098 RegisterClusterTracks(track10,trackID1);
3099 }
44347160 3100 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3101 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3102 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3103 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3104 RegisterClusterTracks(track20,trackID2);
3105 }
3106 return track10;
3107
3108}
44347160 3109//------------------------------------------------------------------------
e43c066c 3110void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3111 //--------------------------------------------------------------------
3112 // This function marks clusters assigned to the track
3113 //--------------------------------------------------------------------
3114 AliTracker::UseClusters(t,from);
3115
00a7cc50 3116 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3117 //if (c->GetQ()>2) c->Use();
3118 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3119 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3120 //if (c->GetQ()>2) c->Use();
3121 if (c->GetSigmaZ2()>0.1) c->Use();
3122
3123}
44347160 3124//------------------------------------------------------------------------
15dd636f 3125void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3126{
3127 //------------------------------------------------------------------
3128 // add track to the list of hypothesys
3129 //------------------------------------------------------------------
3130
fddf8459 3131 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3132 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3133 //
3134 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3135 if (!array) {
3136 array = new TObjArray(10);
3137 fTrackHypothesys.AddAt(array,esdindex);
3138 }
3139 array->AddLast(track);
3140}
44347160 3141//------------------------------------------------------------------------
e43c066c 3142void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3143{
3144 //-------------------------------------------------------------------
3145 // compress array of track hypothesys
3146 // keep only maxsize best hypothesys
3147 //-------------------------------------------------------------------
3148 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3149 if (! (fTrackHypothesys.At(esdindex)) ) return;
3150 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3151 Int_t entries = array->GetEntriesFast();
3152 //
3153 //- find preliminary besttrack as a reference
3154 Float_t minchi2=10000;
3155 Int_t maxn=0;
15dd636f 3156 AliITStrackMI * besttrack=0;
e43c066c 3157 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3158 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3159 if (!track) continue;
3160 Float_t chi2 = NormalizedChi2(track,0);
3161 //
b9671574 3162 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3163 track->SetLabel(tpcLabel);
3164 CookdEdx(track);
b9671574 3165 track->SetFakeRatio(1.);
e43c066c 3166 CookLabel(track,0.); //For comparison only
3167 //
44347160 3168 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3169 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3170 if (track->GetNumberOfClusters()<maxn) continue;
3171 maxn = track->GetNumberOfClusters();
3172 if (chi2<minchi2){
3173 minchi2=chi2;
3174 besttrack=track;
3175 }
3176 }
3177 else{
b9671574 3178 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3179 delete array->RemoveAt(itrack);
3180 }
e43c066c 3181 }
3182 }
3183 if (!besttrack) return;
3184 //
3185 //
3186 //take errors of best track as a reference
3187 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3188 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3189 for (Int_t j=0;j<6;j++) {
9fd412a8 3190 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3191 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3192 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3193 ny[j] = besttrack->GetNy(j);
3194 nz[j] = besttrack->GetNz(j);
e43c066c 3195 }
3196 }
3197 //
3198 // calculate normalized chi2
3199 //
3200 Float_t * chi2 = new Float_t[entries];
3201 Int_t * index = new Int_t[entries];
3202 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3203 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3204 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3205 if (track){
b9671574 3206 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3207 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3208 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3209 else{
b9671574 3210 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3211 delete array->RemoveAt(itrack);
3212 }
3213 }
e43c066c 3214 }
3215 }
3216 //
3217 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3218 besttrack = (AliITStrackMI*)array->At(index[0]);
44347160 3219 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3220 for (Int_t j=0;j<6;j++){
9fd412a8 3221 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3222 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3223 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3224 ny[j] = besttrack->GetNy(j);
3225 nz[j] = besttrack->GetNz(j);
e43c066c 3226 }
3227 }
3228 }
3229 //
3230 // calculate one more time with updated normalized errors
3231 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3232 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3233 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3234 if (track){
b9671574 3235 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
44347160 3236 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3237 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3238 else
3239 {
b9671574 3240 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3241 delete array->RemoveAt(itrack);
3242 }
3243 }
e43c066c 3244 }
3245 }
3246 entries = array->GetEntriesFast();
3247 //
628e7bb0 3248 //
e43c066c 3249 if (entries>0){
3250 TObjArray * newarray = new TObjArray();
3251 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3252 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3253 if (besttrack){
3254 //
a5d0fae6 3255 for (Int_t j=0;j<6;j++){
3256 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3257 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3258 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3259 ny[j] = besttrack->GetNy(j);
3260 nz[j] = besttrack->GetNz(j);
e43c066c 3261 }
3262 }
b9671574 3263 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3264 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3265 Float_t minn = besttrack->GetNumberOfClusters()-3;
3266 Int_t accepted=0;
3267 for (Int_t i=0;i<entries;i++){
15dd636f 3268 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3269 if (!track) continue;
3270 if (accepted>maxcut) break;
b9671574 3271 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3272 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3273 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3274 delete array->RemoveAt(index[i]);
3275 continue;
3276 }
e43c066c 3277 }
b9671574 3278 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3279 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3280 if (!shortbest) accepted++;
e43c066c 3281 //
3282 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3283 for (Int_t j=0;j<6;j++){
3284 if (nz[j]==0){
3285 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3286 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3287 ny[j] = track->GetNy(j);
3288 nz[j] = track->GetNz(j);
e43c066c 3289 }
3290 }
3291 }
3292 else{
3293 delete array->RemoveAt(index[i]);
3294 }
3295 }
3296 array->Delete();
3297 delete fTrackHypothesys.RemoveAt(esdindex);
3298 fTrackHypothesys.AddAt(newarray,esdindex);
3299 }
3300 else{
3301 array->Delete();
3302 delete fTrackHypothesys.RemoveAt(esdindex);
3303 }
3304 }
3305 delete [] chi2;
3306 delete [] index;
3307}
44347160 3308//------------------------------------------------------------------------
15dd636f 3309AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3310{
3311 //-------------------------------------------------------------
3312 // try to find best hypothesy
3313 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3314 //-------------------------------------------------------------
3315 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3316 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3317 if (!array) return 0;
3318 Int_t entries = array->GetEntriesFast();
3319 if (!entries) return 0;
3320 Float_t minchi2 = 100000;
15dd636f 3321 AliITStrackMI * besttrack=0;
e43c066c 3322 //
15dd636f 3323 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3324 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3325 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3326 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3327 //
3328 for (Int_t i=0;i<entries;i++){
15dd636f 3329 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3330 if (!track) continue;
628e7bb0 3331 Float_t sigmarfi,sigmaz;
3332 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3333 track->SetDnorm(0,sigmarfi);
3334 track->SetDnorm(1,sigmaz);
628e7bb0 3335 //
b9671574 3336 track->SetChi2MIP(1,1000000);
3337 track->SetChi2MIP(2,1000000);
3338 track->SetChi2MIP(3,1000000);
e43c066c 3339 //
3340 // backtrack
15dd636f 3341 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3342 if (track->GetConstrain()) {
e50912db 3343 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3344 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3345 backtrack->ResetCovariance(10.);
628e7bb0 3346 }else{
6c94f330 3347 backtrack->ResetCovariance(10.);
628e7bb0 3348 }
e43c066c 3349 backtrack->ResetClusters();
628e7bb0 3350
e43c066c 3351 Double_t x = original->GetX();
3352 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3353 //
b9671574 3354 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3355 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3356 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3357 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3358
b9671574 3359 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3360 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3361 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3362
3363
44347160 3364 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3365 //
3366 //forward track - without constraint
15dd636f 3367 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3368 forwardtrack->ResetClusters();
3369 x = track->GetX();
628e7bb0 3370 RefitAt(x,forwardtrack,track);
b9671574 3371 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3372 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3373 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3374
791f9a2a 3375 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3376 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3377 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3378 forwardtrack->SetD(0,track->GetD(0));
3379 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3380 {
3381 Int_t list[6];
00a7cc50 3382 AliITSRecPoint* clist[6];
b9671574 3383 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3384 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3385 }
3386
b9671574 3387 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3388 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3389 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3390 track->SetChi2MIP(3,1000);
e43c066c 3391 continue;
3392 }
b9671574 3393 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3394 //
3395 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3396 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3397 }
3398 if (chi2 < minchi2){
15dd636f 3399 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3400 besttrack = track;
e43c066c 3401 besttrack->SetLabel(track->GetLabel());
b9671574 3402 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3403 minchi2 = chi2;
791f9a2a 3404 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3405 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3406 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3407 }
3408 }
3409 delete backtrack;
3410 delete forwardtrack;
3411 Int_t accepted=0;
3412 for (Int_t i=0;i<entries;i++){
fddf8459 3413 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3414
e43c066c 3415 if (!track) continue;
628e7bb0 3416
44347160 3417 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3418 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3419 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3420 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3421 delete array->RemoveAt(i);
3422 continue;
3423 }
e43c066c 3424 }
3425 else{
3426 accepted++;
3427 }
3428 }
3429 //
3430 array->Compress();
3431 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3432
e43c066c 3433 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3434 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3435 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3436 if (!besttrack) return 0;
b9671574 3437 besttrack->SetChi2MIP(8,0);
e43c066c 3438 fBestTrackIndex[esdindex]=0;
3439 entries = array->GetEntriesFast();
15dd636f 3440 AliITStrackMI *longtrack =0;
e43c066c 3441 minchi2 =1000;
b9671574 3442 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3443 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3444 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3445 if (!track->GetConstrain()) continue;
3446 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3447 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3448 if (track->GetChi2MIP(0)>4.) continue;
3449 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3450 longtrack =track;
3451 }
3452 //if (longtrack) besttrack=longtrack;
3453
3454 Int_t list[6];
00a7cc50 3455 AliITSRecPoint * clist[6];
e43c066c 3456 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3457 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3458 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3459 RegisterClusterTracks(besttrack,esdindex);
3460 }
3461 //
3462 //
3463 if (shared>0.0){
3464 Int_t nshared;
3465 Int_t overlist[6];
3466 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3467 if (sharedtrack>=0){
3468 //
3469 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3470 if (besttrack){
3471 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3472 }
3473 else return 0;
3474 }
3475 }
3476
3477 if (shared>2.5) return 0;
3478 if (shared>1.0) return besttrack;
3479 //
628e7bb0 3480 // Don't sign clusters if not gold track
3481 //
3482 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3483 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3484 //
e43c066c 3485 if (fConstraint[fPass]){
3486 //
3487 // sign clusters
3488 //
3489 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3490 for (Int_t i=0;i<6;i++){
b9671574 3491 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3492 if (index<0) continue;
e43c066c 3493 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3494 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3495 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3496 if (!c) continue;
3497 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3498 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3499 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3500 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3501 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3502 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3503
3504 Bool_t cansign = kTRUE;
3505 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3506 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3507 if (!track) continue;
b9671574 3508 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3509 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3510 cansign = kFALSE;
3511 break;
3512 }
3513 }
3514 if (cansign){
b9671574 3515 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3516 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3517 if (!c->IsUsed()) c->Use();
3518 }
3519 }
3520 }
3521 return besttrack;
3522}
44347160 3523//------------------------------------------------------------------------
e43c066c 3524void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3525{
3526 //
3527 // get "best" hypothesys
628e7bb0 3528 //
e43c066c 3529
3530 Int_t nentries = itsTracks.GetEntriesFast();
3531 for (Int_t i=0;i<nentries;i++){
15dd636f 3532 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3533 if (!track) continue;
3534 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3535 if (!array) continue;
3536 if (array->GetEntriesFast()<=0) continue;
3537 //
15dd636f 3538 AliITStrackMI* longtrack=0;
e43c066c 3539 Float_t minn=0;
3540 Float_t maxchi2=1000;
3541 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3542 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3543 if (!trackHyp) continue;
3544 if (trackHyp->GetGoldV0()) {
3545 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3546 break;
3547 }
a5d0fae6 3548 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3549 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3550 if (fAfterV0){
a5d0fae6 3551 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3552 }
a5d0fae6 3553 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3554 //
3555 if (chi2 > maxchi2) continue;
a5d0fae6 3556 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3557 maxchi2 = chi2;
a5d0fae6 3558 longtrack=trackHyp;
e43c066c 3559 }
628e7bb0 3560 //
3561 //
3562 //
15dd636f 3563 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3564 if (!longtrack) {longtrack = besttrack;}
3565 else besttrack= longtrack;
628e7bb0 3566 //
afd25725 3567 if (besttrack) {
e43c066c 3568 Int_t list[6];
00a7cc50 3569 AliITSRecPoint * clist[6];
e43c066c 3570 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3571 //
b9671574 3572 track->SetNUsed(shared);
3573 track->SetNSkipped(besttrack->GetNSkipped());
3574 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3575 if (shared>0) {
3576 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3577 Int_t nshared;
3578 Int_t overlist[6];
3579 //
3580 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3581 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3582 if (sharedtrack>=0) {
e43c066c 3583 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3584 }
3585 }
afd25725 3586 if (besttrack&&fAfterV0) {
628e7bb0 3587 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3588 }
e43c066c 3589 if (besttrack&&fConstraint[fPass])
3590 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3591 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3592 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3593 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3594 }
3595
3596 }
3597 }
3598}
44347160 3599//------------------------------------------------------------------------
15dd636f 3600void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3601 //--------------------------------------------------------------------
3602 //This function "cooks" a track label. If label<0, this track is fake.
3603 //--------------------------------------------------------------------
3604 Int_t tpcLabel=-1;
3605
b9671574 3606 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3607
b9671574 3608 track->SetChi2MIP(9,0);
e43c066c 3609 Int_t nwrong=0;
3610 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3611 Int_t cindex = track->GetClusterIndex(i);
3612 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3613 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3614 Int_t isWrong=1;
3615 for (Int_t ind=0;ind<3;ind++){
3616 if (tpcLabel>0)
3617 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
9be1d1c7 3618 AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3619 }
b9671574 3620 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3621 nwrong+=isWrong;
3622 }
7d43b4c4 3623 Int_t nclusters = track->GetNumberOfClusters();
3624 if (nclusters > 0) //PH Some tracks don't have any cluster
3625 track->SetFakeRatio(double(nwrong)/double(nclusters));
e43c066c 3626 if (tpcLabel>0){
b9671574 3627 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
e43c066c 3628 else
b9671574 3629 track->SetLabel(tpcLabel);
e43c066c 3630 }
9be1d1c7 3631 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3632
3633}
44347160 3634//------------------------------------------------------------------------
15dd636f 3635void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
e43c066c 3636{
3637 //
b9671574 3638 track->SetChi2MIP(9,0);
e43c066c 3639 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3640 Int_t cindex = track->GetClusterIndex(i);
3641 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3642 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3643 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3644 Int_t isWrong=1;
3645 for (Int_t ind=0;ind<3;ind++){
3646 if (cl->GetLabel(ind)==lab) isWrong=0;
3647 }
b9671574 3648 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3649 }
e43c066c 3650 Double_t low=0.;
3651 Double_t up=0.51;
09cf9d66 3652 track->CookdEdx(low,up);
e43c066c 3653}
44347160 3654//------------------------------------------------------------------------
e50912db 3655void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3656 //
a70ed6ad 3657 // Create some arrays
e43c066c 3658 //
afd25725 3659 if (fCoefficients) delete []fCoefficients;
3660 fCoefficients = new Float_t[ntracks*48];
3661 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3662}
44347160 3663//------------------------------------------------------------------------
00a7cc50 3664Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3665{
3666 //
a70ed6ad 3667 // Compute predicted chi2
e43c066c 3668 //
d9ead1a0 3669 Float_t erry,errz,covyz;
e43c066c 3670 Float_t theta = track->GetTgl();
3671 Float_t phi = track->GetSnp();
60e55aee 3672 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 3673 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 3674 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 3675 // Take into account the mis-alignment (bring track to cluster plane)
3676 Double_t xTrOrig=track->GetX();
9be1d1c7 3677 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
4187a601 3678 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
d9ead1a0 3679 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 3680 // Bring the track back to detector plane in ideal geometry
3681 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3682 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3683 Float_t ny,nz;
e50912db 3684 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3685 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3686 if (delta>1){
3687 chi2+=0.5*TMath::Min(delta/2,2.);
3688 chi2+=2.*cluster->GetDeltaProbability();
3689 }
3690 //
b9671574 3691 track->SetNy(layer,ny);
3692 track->SetNz(layer,nz);
3693 track->SetSigmaY(layer,erry);
3694 track->SetSigmaZ(layer, errz);
d9ead1a0 3695 track->SetSigmaYZ(layer,covyz);
e43c066c 3696 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3697 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3698 return chi2;
3699
3700}
e50912db 3701//------------------------------------------------------------------------
3702Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3703{
3704 //
a70ed6ad 3705 // Update ITS track
e43c066c 3706 //
3707 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3708 track->SetClIndex(layer, index);
572f41f9 3709 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3710 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3711 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3712 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3713 }
e43c066c 3714 }
a504d56f 3715
1f3e997f 3716 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
a504d56f 3717
afd25725 3718
1c97ce2f 3719 // Take into account the mis-alignment (bring track to cluster plane)
3720 Double_t xTrOrig=track->GetX();
4187a601 3721 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3722 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3723 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3724 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3725
9be1d1c7 3726 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 3727
150f264c 3728 AliCluster c(*cl);
3729 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3730 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 3731 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 3732
1c97ce2f 3733
3734 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 3735 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3736 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 3737
4187a601 3738 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3739 return updated;
e43c066c 3740}
150f264c 3741
44347160 3742//------------------------------------------------------------------------
a70ed6ad 3743void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3744{
3745 //
3746 //DCA sigmas parameterization
3747 //to be paramterized using external parameters in future
3748 //
3749 //
afd25725 3750 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3751 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3752}
e50912db 3753//------------------------------------------------------------------------
a70ed6ad 3754void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3755{
3756 //
a70ed6ad 3757 // Clusters from delta electrons?
e43c066c 3758 //
a70ed6ad 3759 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3760 if (entries<4) return;
a70ed6ad 3761 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3762 Int_t layer = cluster->GetLayer();
3763 if (layer>1) return;
3764 Int_t index[10000];
3765 Int_t ncandidates=0;
3766 Float_t r = (layer>0)? 7:4;
3767 //
3768 for (Int_t i=0;i<entries;i++){
a70ed6ad 3769 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3770 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3771 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3772 index[ncandidates] = i; //candidate to belong to delta electron track
3773 ncandidates++;
3774 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3775 cl0->SetDeltaProbability(1);
3776 }
3777 }
3778 //
3779 //
3780 //
3781 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3782 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3783 if (cl0->GetDeltaProbability()>0.8) continue;
3784 //
3785 Int_t ncl = 0;
3786 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3787 sumy=sumz=sumy2=sumyz=sumw=0.0;
3788 for (Int_t j=0;j<ncandidates;j++){
3789 if (i==j) continue;
a70ed6ad 3790 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3791 //
3792 Float_t dz = cl0->GetZ()-cl1->GetZ();
3793 Float_t dy = cl0->GetY()-cl1->GetY();
3794 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3795 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3796 y[ncl] = cl1->GetY();
3797 z[ncl] = cl1->GetZ();
3798 sumy+= y[ncl]*weight;
3799 sumz+= z[ncl]*weight;
3800 sumy2+=y[ncl]*y[ncl]*weight;
3801 sumyz+=y[ncl]*z[ncl]*weight;
3802 sumw+=weight;
3803 ncl++;
3804 }
3805 }
3806 if (ncl<4) continue;
3807 Float_t det = sumw*sumy2 - sumy*sumy;
3808 Float_t delta=1000;
3809 if (TMath::Abs(det)>0.01){
3810 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3811 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3812 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3813 }
3814 else{
3815 Float_t z0 = sumyz/sumy;
3816 delta = TMath::Abs(cl0->GetZ()-z0);
3817 }
3818 if ( delta<0.05) {
3819 cl0->SetDeltaProbability(1-20.*delta);
3820 }
3821 }
3822}
44347160 3823//------------------------------------------------------------------------
15dd636f 3824void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3825{
3826 //
a70ed6ad 3827 // Update ESD track
e43c066c 3828 //
3829 track->UpdateESDtrack(flags);
b9671574 3830 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3831 if (oldtrack) delete oldtrack;
b9671574 3832 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3833 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
628e7bb0 3834 printf("Problem\n");
3835 }
e43c066c 3836}
44347160 3837//------------------------------------------------------------------------
81e97e0d 3838Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3839 //
ae00569a 3840 // Get nearest upper layer close to the point xr.
81e97e0d 3841 // rough approximation
3842 //
bf6adc12 3843 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3844 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3845 Int_t res =6;
3846 for (Int_t i=0;i<6;i++){
bf6adc12 3847 if (radius<kRadiuses[i]){
81e97e0d 3848 res =i;
3849 break;
3850 }
3851 }
3852 return res;
3853}
44347160 3854//------------------------------------------------------------------------
e50912db 3855void AliITStrackerMI::BuildMaterialLUT(TString material) {
3856 //--------------------------------------------------------------------
3857 // Fill a look-up table with mean material
3858 //--------------------------------------------------------------------
3859
3860 Int_t n=1000;
3861 Double_t mparam[7];
3862 Double_t point1[3],point2[3];
3863 Double_t phi,cosphi,sinphi,z;
3864 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3865 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3866 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3867
3868 Int_t ifirst=0,ilast=0;
3869 if(material.Contains("Pipe")) {
3870 ifirst=6; ilast=6;
3871 } else if(material.Contains("Shields")) {
3872 ifirst=7; ilast=8;
3873 } else if(material.Contains("Layers")) {
3874 ifirst=0; ilast=5;
3875 } else {
3876 Error("BuildMaterialLUT","Wrong layer name\n");
3877 }
3878
3879 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3880 Double_t param[5]={0.,0.,0.,0.,0.};
3881 for (Int_t i=0; i<n; i++) {
3882 phi = 2.*TMath::Pi()*gRandom->Rndm();
3883 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3884 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3885 point1[0] = rmin[imat]*cosphi;
3886 point1[1] = rmin[imat]*sinphi;
3887 point1[2] = z;
3888 point2[0] = rmax[imat]*cosphi;
3889 point2[1] = rmax[imat]*sinphi;
3890 point2[2] = z;
3891 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3892 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3893 }
3894 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3895 if(imat<=5) {
3896 fxOverX0Layer[imat] = param[1];
3897 fxTimesRhoLayer[imat] = param[0]*param[4];
3898 } else if(imat==6) {
3899 fxOverX0Pipe = param[1];
3900 fxTimesRhoPipe = param[0]*param[4];
3901 } else if(imat==7) {
3902 fxOverX0Shield[0] = param[1];
3903 fxTimesRhoShield[0] = param[0]*param[4];
3904 } else if(imat==8) {
3905 fxOverX0Shield[1] = param[1];
3906 fxTimesRhoShield[1] = param[0]*param[4];
3907 }
3908 }
3909 /*
3910 printf("%s\n",material.Data());
3911 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3912 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3913 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3914 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3915 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3916 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3917 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3918 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3919 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3920 */
3921 return;
3922}
3923//------------------------------------------------------------------------
3924Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3925 TString direction) {
3926 //-------------------------------------------------------------------
3927 // Propagate beyond beam pipe and correct for material
3928 // (material budget in different ways according to fUseTGeo value)
7131593b 3929 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3930 //-------------------------------------------------------------------
3931
3932 // Define budget mode:
3933 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3934 // 1: material from TGeo in one step (on the fly)
e50912db 3935 // 2: material from lut
9be1d1c7 3936 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 3937 Int_t mode;
3938 switch(fUseTGeo) {
3939 case 0:
3940 mode=0;
3941 break;
3942 case 1:
3943 mode=1;
3944 break;
3945 case 2:
3946 mode=2;
3947 break;
3948 case 3:
3949 if(fTrackingPhase.Contains("Clusters2Tracks"))
3950 { mode=3; } else { mode=1; }
3951 break;
3952 case 4:
3953 if(fTrackingPhase.Contains("Clusters2Tracks"))
3954 { mode=3; } else { mode=2; }
3955 break;
3956 default:
3957 mode=0;
3958 break;
3959 }
3960 if(fTrackingPhase.Contains("Default")) mode=0;
3961
3962 Int_t index=fCurrentEsdTrack;
3963
3964 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
3965 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 3966 Double_t xToGo;
3967 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 3968
3969 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 3970
3971 switch(mode) {
3972 case 0:
3973 xOverX0 = AliITSRecoParam::GetdPipe();
3974 x0 = AliITSRecoParam::GetX0Be();
3975 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 3976 lengthTimesMeanDensity *= dir;
7131593b 3977 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3978 break;
3979 case 1:
3980 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 3981 break;
3982 case 2:
3983 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
3984 xOverX0 = fxOverX0Pipe;
3985 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 3986 lengthTimesMeanDensity *= dir;
7131593b 3987 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3988 break;
3989 case 3:
3990 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
3991 if(fxOverX0PipeTrks[index]<0) {
3992 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
3993 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 3994 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 3995 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
3996 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
3997 return 1;
3998 }
3999 xOverX0 = fxOverX0PipeTrks[index];
4000 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4001 lengthTimesMeanDensity *= dir;
7131593b 4002 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4003 break;
4004 }
4005
e50912db 4006 return 1;
4007}
4008//------------------------------------------------------------------------
4009Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4010 TString shield,
4011 TString direction) {
4012 //-------------------------------------------------------------------
4013 // Propagate beyond SPD or SDD shield and correct for material
4014 // (material budget in different ways according to fUseTGeo value)
7131593b 4015 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4016 //-------------------------------------------------------------------
4017
4018 // Define budget mode:
4019 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4020 // 1: material from TGeo in steps of X cm (on the fly)
4021 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4022 // 2: material from lut
9be1d1c7 4023 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4024 Int_t mode;
4025 switch(fUseTGeo) {
4026 case 0:
4027 mode=0;
4028 break;
4029 case 1:
4030 mode=1;
4031 break;
4032 case 2:
4033 mode=2;
4034 break;
4035 case 3:
4036 if(fTrackingPhase.Contains("Clusters2Tracks"))
4037 { mode=3; } else { mode=1; }
4038 break;
4039 case 4:
4040 if(fTrackingPhase.Contains("Clusters2Tracks"))
4041 { mode=3; } else { mode=2; }
4042 break;
4043 default:
4044 mode=0;
4045 break;
4046 }
4047 if(fTrackingPhase.Contains("Default")) mode=0;
4048
4049 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4050 Double_t rToGo;
4051 Int_t shieldindex=0;
4052 if (shield.Contains("SDD")) { // SDDouter
4053 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4054 shieldindex=1;
4055 } else if (shield.Contains("SPD")) { // SPDouter
4056 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4057 shieldindex=0;
4058 } else {
4059 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4060 return 0;
4061 }
67178f34 4062
4063 // do nothing if we are already beyond the shield
4064 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4065 if(dir<0 && rTrack > rToGo) return 1; // going outward
4066 if(dir>0 && rTrack < rToGo) return 1; // going inward
4067
4068
70e83b26 4069 Double_t xToGo;
4070 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4071
4072 Int_t index=2*fCurrentEsdTrack+shieldindex;
4073
4074 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4075 Int_t nsteps=1;
e50912db 4076
4077 switch(mode) {
4078 case 0:
4079 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4080 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4081 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4082 lengthTimesMeanDensity *= dir;
7131593b 4083 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4084 break;
4085 case 1:
9be1d1c7 4086 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4087 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4088 break;
4089 case 2:
4090 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4091 xOverX0 = fxOverX0Shield[shieldindex];
4092 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4093 lengthTimesMeanDensity *= dir;
7131593b 4094 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4095 break;
4096 case 3:
4097 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4098 if(fxOverX0ShieldTrks[index]<0) {
4099 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4100 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4101 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4102 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4103 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4104 return 1;
4105 }
4106 xOverX0 = fxOverX0ShieldTrks[index];
4107 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4108 lengthTimesMeanDensity *= dir;
7131593b 4109 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4110 break;
4111 }
4112
e50912db 4113 return 1;
4114}
4115//------------------------------------------------------------------------
4116Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4117 Int_t layerindex,
4118 Double_t oldGlobXYZ[3],
4119 TString direction) {
4120 //-------------------------------------------------------------------
4121 // Propagate beyond layer and correct for material
4122 // (material budget in different ways according to fUseTGeo value)
7131593b 4123 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4124 //-------------------------------------------------------------------
4125
4126 // Define budget mode:
4127 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4128 // 1: material from TGeo in stepsof X cm (on the fly)
4129 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4130 // 2: material from lut
9be1d1c7 4131 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4132 Int_t mode;
4133 switch(fUseTGeo) {
4134 case 0:
4135 mode=0;
4136 break;
4137 case 1:
4138 mode=1;
4139 break;
4140 case 2:
4141 mode=2;
4142 break;
4143 case 3:
4144 if(fTrackingPhase.Contains("Clusters2Tracks"))
4145 { mode=3; } else { mode=1; }
4146 break;
4147 case 4:
4148 if(fTrackingPhase.Contains("Clusters2Tracks"))
4149 { mode=3; } else { mode=2; }
4150 break;
4151 default:
4152 mode=0;
4153 break;
4154 }
4155 if(fTrackingPhase.Contains("Default")) mode=0;
4156
4157 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4158
4159 Double_t r=fgLayers[layerindex].GetR();
4160 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4161
4162 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4163 Double_t xToGo;
4164 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4165
4166 Int_t index=6*fCurrentEsdTrack+layerindex;
4167
e50912db 4168
4169 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4170 Int_t nsteps=1;
7131593b 4171
4172 // back before material (no correction)
d634c32b 4173 Double_t rOld,xOld;
7131593b 4174 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4175 if (!t->GetLocalXat(rOld,xOld)) return 0;
4176 if (!t->Propagate(xOld)) return 0;
e50912db 4177
4178 switch(mode) {
4179 case 0:
4180 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4181 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4182 lengthTimesMeanDensity *= dir;
7131593b 4183 // Bring the track beyond the material
4184 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4185 break;
4186 case 1:
9be1d1c7 4187 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4188 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4189 break;
4190 case 2:
4191 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4192 xOverX0 = fxOverX0Layer[layerindex];
4193 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4194 lengthTimesMeanDensity *= dir;
7131593b 4195 // Bring the track beyond the material
4196 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4197 break;
4198 case 3:
4199 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4200 if(fxOverX0LayerTrks[index]<0) {
4201 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4202 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4203 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4204 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4205 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4206 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4207 return 1;
e50912db 4208 }
4209 xOverX0 = fxOverX0LayerTrks[index];
4210 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4211 lengthTimesMeanDensity *= dir;
7131593b 4212 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4213 break;
4214 }
4215
7131593b 4216
e50912db 4217 return 1;
4218}
4219//------------------------------------------------------------------------
4220void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4221 //-----------------------------------------------------------------
4222 // Initialize LUT for storing material for each prolonged track
4223 //-----------------------------------------------------------------
4224 fxOverX0PipeTrks = new Float_t[ntracks];
4225 fxTimesRhoPipeTrks = new Float_t[ntracks];
4226 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4227 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4228 fxOverX0LayerTrks = new Float_t[ntracks*6];
4229 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4230
4231 for(Int_t i=0; i<ntracks; i++) {
4232 fxOverX0PipeTrks[i] = -1.;
4233 fxTimesRhoPipeTrks[i] = -1.;
4234 }
4235 for(Int_t j=0; j<ntracks*2; j++) {
4236 fxOverX0ShieldTrks[j] = -1.;
4237 fxTimesRhoShieldTrks[j] = -1.;
4238 }
4239 for(Int_t k=0; k<ntracks*6; k++) {
4240 fxOverX0LayerTrks[k] = -1.;
4241 fxTimesRhoLayerTrks[k] = -1.;
4242 }
4243
4244 fNtracks = ntracks;
4245
4246 return;
4247}
4248//------------------------------------------------------------------------
4249void AliITStrackerMI::DeleteTrksMaterialLUT() {
4250 //-----------------------------------------------------------------
4251 // Delete LUT for storing material for each prolonged track
4252 //-----------------------------------------------------------------
4253 if(fxOverX0PipeTrks) {
4254 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4255 }
4256 if(fxOverX0ShieldTrks) {
4257 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4258 }
4259
4260 if(fxOverX0LayerTrks) {
4261 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4262 }
4263 if(fxTimesRhoPipeTrks) {
4264 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4265 }
4266 if(fxTimesRhoShieldTrks) {
4267 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4268 }
4269 if(fxTimesRhoLayerTrks) {
4270 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4271 }
4272 return;
4273}
4274//------------------------------------------------------------------------
4fa7f7d1 4275void AliITStrackerMI::SetForceSkippingOfLayer() {
4276 //-----------------------------------------------------------------
4277 // Check if we are forced to skip layers
4278 // either we set to skip them in RecoParam
4279 // or they were off during data-taking
4280 //-----------------------------------------------------------------
4281
4282 const AliEventInfo *eventInfo = GetEventInfo();
4283
4284 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4285 fForceSkippingOfLayer[l] = 0;
4286 // check reco param
4287 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4288 // check run info
4289
4290 if(eventInfo) {
4291 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4292 if(l==0 || l==1) {
4293 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4294 } else if(l==2 || l==3) {
4295 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4296 } else {
4297 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4298 }
4299 }
4300 }
4301 return;
4302}
4303//------------------------------------------------------------------------
a70ed6ad 4304Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4305 Int_t ilayer,Int_t idet) const {
2755f080 4306 //-----------------------------------------------------------------
4307 // This method is used to decide whether to allow a prolongation
4308 // without clusters, because we want to skip the layer.
4309 // In this case the return value is > 0:
4310 // return 1: the user requested to skip a layer
4311 // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
4312 //-----------------------------------------------------------------
e43c066c 4313
4fa7f7d1 4314 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4315
2755f080 4316 if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4317 // check if track will cross SPD outer layer
4318 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4319 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4320 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4321 }
4322 }
51ad6848 4323
2755f080 4324 return 0;
4325}
4326//------------------------------------------------------------------------
23197852 4327Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4328 Int_t ilayer,Int_t idet,
1c97ce2f 4329 Double_t dz,Double_t dy,
23197852 4330 Bool_t noClusters) const {
6518a6c5 4331 //-----------------------------------------------------------------
4332 // This method is used to decide whether to allow a prolongation
ae00569a 4333 // without clusters, because there is a dead zone in the road.
6518a6c5 4334 // In this case the return value is > 0:
4335 // return 1: dead zone at z=0,+-7cm in SPD
23197852 4336 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4337 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4338 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4339 //-----------------------------------------------------------------
4340
4341 // check dead zones at z=0,+-7cm in the SPD
4342 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4343 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4344 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4345 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4346 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4347 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4348 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4349 for (Int_t i=0; i<3; i++)
4187a601 4350 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4351 AliDebug(2,Form("crack SPD %d",ilayer));
4352 return 1;
4353 }
6518a6c5 4354 }
4355
23197852 4356 // check bad zones from OCDB
4357 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4358
23197852 4359 if (idet<0) return 0;
ae00569a 4360
23197852 4361 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4362
23197852 4363 Int_t detType=-1;
4364 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4365 if (ilayer==0 || ilayer==1) { // ---------- SPD
4366 detType = 0;
4367 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4368 detType = 1;
4369 detSizeFactorX *= 2.;
4370 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4371 detType = 2;
4372 }
a70ed6ad 4373 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4374 if (detType==2) segm->SetLayer(ilayer+1);
4375 Float_t detSizeX = detSizeFactorX*segm->Dx();
4376 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4377
4378 // check if the road overlaps with bad chips
4379 Float_t xloc,zloc;
4187a601 4380 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4381 Float_t zlocmin = zloc-dz;
4382 Float_t zlocmax = zloc+dz;
4383 Float_t xlocmin = xloc-dy;
4384 Float_t xlocmax = xloc+dy;
23197852 4385 Int_t chipsInRoad[100];
4386
4187a601 4387 // check if road goes out of detector
4388 Bool_t touchNeighbourDet=kFALSE;
4389 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.5*detSizeX; touchNeighbourDet=kTRUE;}
4390 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.5*detSizeX; touchNeighbourDet=kTRUE;}
4391 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4392 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4393 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));
4394
4395 // check if this detector is bad
4396 if (det.IsBad()) {
4397 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4398 if(!touchNeighbourDet) {
4399 return 2; // all detectors in road are bad
4400 } else {
4401 return 3; // at least one is bad
4402 }
4403 }
4404
23197852 4405 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4406 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4407 if (!nChipsInRoad) return 0;
4408
4409 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4410 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4411 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4412 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4413 if (det.IsChipBad(chipsInRoad[iCh])) {
4414 anyBad=kTRUE;
4415 } else {
4416 anyGood=kTRUE;
4417 }
6518a6c5 4418 }
4419
4187a601 4420 if (!anyGood) {
4421 if(!touchNeighbourDet) {
4422 AliDebug(2,"all bad in road");
4423 return 2; // all chips in road are bad
4424 } else {
4425 return 3; // at least a bad chip in road
4426 }
4427 }
23197852 4428
4187a601 4429 if (anyBad) {
4430 AliDebug(2,"at least a bad in road");
4431 return 3; // at least a bad chip in road
4432 }
23197852 4433
4434
4435 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4436 || !noClusters) return 0;
4437
4438 // There are no clusters in road: check if there is at least
6a0fdcbd 4439 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4440
4187a601 4441 Int_t idetInITS=idet;
4442 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4443
4187a601 4444 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4445 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4446 return 4;
4187a601 4447 }
4448 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4449
6518a6c5 4450 return 0;
4451}
4452//------------------------------------------------------------------------
ae00569a 4453Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4454 const AliITStrackMI *track,
ae00569a 4455 Float_t &xloc,Float_t &zloc) const {
4456 //-----------------------------------------------------------------
4457 // Gives position of track in local module ref. frame
4458 //-----------------------------------------------------------------
4459
4460 xloc=0.;
4461 zloc=0.;
4462
4463 if(idet<0) return kFALSE;
4464
4465 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4466
4467 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4468
ae00569a 4469 Int_t det = idet - (lad-1)*ndet + 1;
4470
4471 Double_t xyzGlob[3],xyzLoc[3];
4472
1c97ce2f 4473 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4474 // take into account the misalignment: xyz at real detector plane
d1181f10 4475 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4476
d1181f10 4477 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4478
4479 xloc = (Float_t)xyzLoc[0];
4480 zloc = (Float_t)xyzLoc[2];
4481
4482 return kTRUE;
4483}
4484//------------------------------------------------------------------------
a70ed6ad 4485Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4486//
4487// Method to be optimized further:
4488// Aim: decide whether a track can be used for PlaneEff evaluation
4489// the decision is taken based on the track quality at the layer under study
4490// no information on the clusters on this layer has to be used
4491// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4492// the cut is done on number of sigmas from the boundaries
4493//
4494// Input: Actual track, layer [0,5] under study
4495// Output: none
4496// Return: kTRUE if this is a good track
7167ae53 4497//
4498// it will apply a pre-selection to obtain good quality tracks.
4499// Here also you will have the possibility to put a control on the
4500// impact point of the track on the basic block, in order to exclude border regions
4501// this will be done by calling a proper method of the AliITSPlaneEff class.
4502//
4503// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4504// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4505//
4506 Int_t index[AliITSgeomTGeo::kNLayers];
4507 Int_t k;
4508 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4509 //
4510 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4511 index[k]=clusters[k];
4512 }
4513
0e91092f 4514 if(!fPlaneEff)
a31a139f 4515 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4516 AliITSlayer &layer=fgLayers[ilayer];
4517 Double_t r=layer.GetR();
8a32c4b5 4518 AliITStrackMI tmp(*track);
4519
0ed58a47 4520// require a minimal number of cluster in other layers and eventually clusters in closest layers
4521 Int_t ncl=0;
4522 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
4523 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4524 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
9fd412a8 4525 if (tmp.GetClIndex(lay)>=0) ncl++;
0ed58a47 4526 }
4527 Bool_t nextout = kFALSE;
4528 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4529 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4530 Bool_t nextin = kFALSE;
4531 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4532 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4533 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4534 return kFALSE;
4535 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4536 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4537 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4538 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4539
8a32c4b5 4540// detector number
4541 Double_t phi,z;
4542 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4543 Int_t idet=layer.FindDetectorIndex(phi,z);
4544 if(idet<0) { AliInfo(Form("cannot find detector"));
4545 return kFALSE;}
4546
4547 // here check if it has good Chi Square.
4548
4549 //propagate to the intersection with the detector plane
4550 const AliITSdetector &det=layer.GetDetector(idet);
4551 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4552
4553 Float_t locx; //
4554 Float_t locz; //
0e91092f 4555 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4556 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4557 if(key>fPlaneEff->Nblock()) return kFALSE;
4558 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4559 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4560 //***************
0e91092f 4561 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4562 //
4563 //For the time being they are hard-wired, later on from AliITSRecoParam
0e91092f 4564 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
4565 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
4566 Double_t nsigz=4;
4567 Double_t nsigx=4;
4568 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4569 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4570 // done for RecPoints
8a32c4b5 4571
1c97ce2f 4572 // exclude tracks at boundary between detectors
0e91092f 4573 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4574 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4575 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4576 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4577 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 4578
0e91092f 4579 if ( (locx-dx < blockXmn+boundaryWidth) ||
4580 (locx+dx > blockXmx-boundaryWidth) ||
4581 (locz-dz < blockZmn+boundaryWidth) ||
4582 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4583 return kTRUE;
7167ae53 4584}
4585//------------------------------------------------------------------------
a70ed6ad 4586void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4587//
4588// This Method has to be optimized! For the time-being it uses the same criteria
4589// as those used in the search of extra clusters for overlapping modules.
4590//
4591// Method Purpose: estabilish whether a track has produced a recpoint or not
4592// in the layer under study (For Plane efficiency)
4593//
4594// inputs: AliITStrackMI* track (pointer to a usable track)
4595// outputs: none
4596// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4597// traversed by this very track. In details:
4598// - if a cluster can be associated to the track then call
4599// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4600// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4601//
a31a139f 4602 if(!fPlaneEff)
4603 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4604 AliITSlayer &layer=fgLayers[ilayer];
4605 Double_t r=layer.GetR();
7167ae53 4606 AliITStrackMI tmp(*track);
4607
4608// detector number
4609 Double_t phi,z;
4610 if (!tmp.GetPhiZat(r,phi,z)) return;
4611 Int_t idet=layer.FindDetectorIndex(phi,z);
4612
8a32c4b5 4613 if(idet<0) { AliInfo(Form("cannot find detector"));
4614 return;}
7167ae53 4615
7167ae53 4616
0e91092f 4617//propagate to the intersection with the detector plane
7167ae53 4618 const AliITSdetector &det=layer.GetDetector(idet);
4619 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4620
1c97ce2f 4621
0e91092f 4622//***************
4623// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4624//
4625 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4626 TMath::Sqrt(tmp.GetSigmaZ2() +
4627 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4628 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4629 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4630 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4631 TMath::Sqrt(tmp.GetSigmaY2() +
4632 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4633 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4634 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4635
4636// road in global (rphi,z) [i.e. in tracking ref. system]
4637 Double_t zmin = tmp.GetZ() - dz;
4638 Double_t zmax = tmp.GetZ() + dz;
4639 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4640 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4641
4642// select clusters in road
7167ae53 4643 layer.SelectClusters(zmin,zmax,ymin,ymax);
4644
0e91092f 4645// Define criteria for track-cluster association
7167ae53 4646 Double_t msz = tmp.GetSigmaZ2() +
4647 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4648 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4649 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4650 Double_t msy = tmp.GetSigmaY2() +
4651 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4652 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4653 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4654 if (tmp.GetConstrain()) {
7167ae53 4655 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4656 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4657 } else {
4658 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4659 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4660 }
7167ae53 4661 msz = 1./msz; // 1/RoadZ^2
4662 msy = 1./msy; // 1/RoadY^2
0e91092f 4663//
7167ae53 4664
4665 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4666 Int_t idetc=-1;
8a32c4b5 4667 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4668 //Double_t tolerance=0.2;
4669 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4670 idetc = cl->GetDetectorIndex();
4671 if(idet!=idetc) continue;
4672 //Int_t ilay = cl->GetLayer();
4673
4674 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4675 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4676
4677 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4678 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4679 }*/
4680 Float_t locx; //
4681 Float_t locz; //
0e91092f 4682 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4683//
4684 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4685 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4686 if(key>fPlaneEff->Nblock()) return;
4687 Bool_t found=kFALSE;
8a32c4b5 4688 //if (ci>=0) {
1cc5cedc 4689 Double_t chi2;
8a32c4b5 4690 while ((cl=layer.GetNextCluster(clidx))!=0) {
4691 idetc = cl->GetDetectorIndex();
4692 if(idet!=idetc) continue;
4693 // here real control to see whether the cluster can be associated to the track.
4694 // cluster not associated to track
4695 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4696 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4697 // calculate track-clusters chi2
1cc5cedc 4698 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4699 // in particular, the error associated to the cluster
8a32c4b5 4700 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4701 // chi2 cut
4702 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4703 found=kTRUE;
8a32c4b5 4704 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4705 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4706 // track->SetExtraModule(ilayer,idetExtra);
4707 }
4708 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4709 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4710 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4711 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4712 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4713 Int_t cltype[2]={-999,-999};
0e91092f 4714
4715 tr[0]=locx;
4716 tr[1]=locz;
4717 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4718 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4719
3ebe30ad 4720 if (found){
4721 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4722 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4723 cltype[0]=layer.GetCluster(ci)->GetNy();
4724 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4725
4726 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4727 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4728 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4729 // It is computed properly by calling the method
4730 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4731 // T
4732 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4733 //if (tmp.PropagateTo(x,0.,0.)) {
4734 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4735 AliCluster c(*layer.GetCluster(ci));
4736 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4737 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4738 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4739 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4740 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4741 //}
3ebe30ad 4742 }
4743 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 4744 }
7167ae53 4745return;
4746}
4fa7f7d1 4747