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Adding protection on time of flight (E. Fragiacomo)
[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
23197852 36
4187a601 37#include "AliLog.h"
a70ed6ad 38#include "AliITSPlaneEff.h"
39#include "AliITSCalibrationSPD.h"
40#include "AliITSCalibrationSDD.h"
41#include "AliITSCalibrationSSD.h"
42#include "AliCDBEntry.h"
43#include "AliCDBManager.h"
44#include "AliAlignObj.h"
45#include "AliTrackPointArray.h"
46#include "AliESDVertex.h"
af885e0f 47#include "AliESDEvent.h"
aad72f45 48#include "AliESDtrack.h"
6c94f330 49#include "AliV0.h"
bf6adc12 50#include "AliHelix.h"
a70ed6ad 51#include "AliITSChannelStatus.h"
52#include "AliITSDetTypeRec.h"
00a7cc50 53#include "AliITSRecPoint.h"
e341247d 54#include "AliITSgeomTGeo.h"
44347160 55#include "AliITSReconstructor.h"
572f41f9 56#include "AliITSClusterParam.h"
23197852 57#include "AliITSsegmentation.h"
58#include "AliITSCalibration.h"
7167ae53 59#include "AliITSPlaneEffSPD.h"
60#include "AliITSPlaneEffSDD.h"
61#include "AliITSPlaneEffSSD.h"
44396017 62#include "AliITSV0Finder.h"
ae00569a 63#include "AliITStrackerMI.h"
e43c066c 64
65ClassImp(AliITStrackerMI)
e43c066c 66
e50912db 67AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 68
8221b41b 69AliITStrackerMI::AliITStrackerMI():AliTracker(),
70fI(0),
71fBestTrack(),
72fTrackToFollow(),
73fTrackHypothesys(),
74fBestHypothesys(),
75fOriginal(),
76fCurrentEsdTrack(),
77fPass(0),
78fAfterV0(kFALSE),
79fLastLayerToTrackTo(0),
afd25725 80fCoefficients(0),
8221b41b 81fEsd(0),
e50912db 82fTrackingPhase("Default"),
6518a6c5 83fUseTGeo(3),
e50912db 84fNtracks(0),
85fxOverX0Pipe(-1.),
86fxTimesRhoPipe(-1.),
87fxOverX0PipeTrks(0),
88fxTimesRhoPipeTrks(0),
89fxOverX0ShieldTrks(0),
90fxTimesRhoShieldTrks(0),
91fxOverX0LayerTrks(0),
92fxTimesRhoLayerTrks(0),
4a66240a 93fDebugStreamer(0),
23197852 94fITSChannelStatus(0),
a70ed6ad 95fkDetTypeRec(0),
ae00569a 96fPlaneEff(0) {
8221b41b 97 //Default constructor
e50912db 98 Int_t i;
99 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
100 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
101 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 102}
44347160 103//------------------------------------------------------------------------
1f3e997f 104AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 105fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 106fBestTrack(),
107fTrackToFollow(),
108fTrackHypothesys(),
109fBestHypothesys(),
110fOriginal(),
111fCurrentEsdTrack(),
112fPass(0),
113fAfterV0(kFALSE),
e50912db 114fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 115fCoefficients(0),
8221b41b 116fEsd(0),
e50912db 117fTrackingPhase("Default"),
6518a6c5 118fUseTGeo(3),
e50912db 119fNtracks(0),
120fxOverX0Pipe(-1.),
121fxTimesRhoPipe(-1.),
122fxOverX0PipeTrks(0),
123fxTimesRhoPipeTrks(0),
124fxOverX0ShieldTrks(0),
125fxTimesRhoShieldTrks(0),
126fxOverX0LayerTrks(0),
127fxTimesRhoLayerTrks(0),
4a66240a 128fDebugStreamer(0),
23197852 129fITSChannelStatus(0),
a70ed6ad 130fkDetTypeRec(0),
ae00569a 131fPlaneEff(0) {
e43c066c 132 //--------------------------------------------------------------------
133 //This is the AliITStrackerMI constructor
134 //--------------------------------------------------------------------
e341247d 135 if (geom) {
136 AliWarning("\"geom\" is actually a dummy argument !");
137 }
138
afd25725 139 fCoefficients = 0;
628e7bb0 140 fAfterV0 = kFALSE;
e341247d 141
e50912db 142 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 143 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
144 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
145
146 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
147 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 148 Double_t poff=TMath::ATan2(y,x);
149 Double_t zoff=z;
e341247d 150 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 151
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
e341247d 154 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 155 r += TMath::Sqrt(x*x + y*y);
e341247d 156 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 157 r += TMath::Sqrt(x*x + y*y);
158 r*=0.25;
159
160 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
161
162 for (Int_t j=1; j<nlad+1; j++) {
163 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 164 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 165 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
166 m.Multiply(tm);
a5d0fae6 167 Double_t txyz[3]={0.};
168 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 169 m.LocalToMaster(txyz,xyz);
a5d0fae6 170 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 171 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 172
173 if (phi<0) phi+=TMath::TwoPi();
174 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
175
e43c066c 176 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
177 new(&det) AliITSdetector(r,phi);
1c97ce2f 178 // compute the real radius (with misalignment)
179 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
180 mmisal.Multiply(tm);
181 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
182 mmisal.LocalToMaster(txyz,xyz);
183 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
184 det.SetRmisal(rmisal);
185
23197852 186 } // end loop on detectors
187 } // end loop on ladders
188 } // end loop on layers
e43c066c 189
e43c066c 190
e50912db 191 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 192
193 fPass=0;
194 fConstraint[0]=1; fConstraint[1]=0;
195
afd25725 196 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
197 AliITSReconstructor::GetRecoParam()->GetYVdef(),
198 AliITSReconstructor::GetRecoParam()->GetZVdef()};
199 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
200 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
201 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
202 SetVertex(xyzVtx,ersVtx);
e43c066c 203
e50912db 204 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
205 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 206 for (Int_t i=0;i<100000;i++){
207 fBestTrackIndex[i]=0;
208 }
afd25725 209
210 // store positions of centre of SPD modules (in z)
211 Double_t tr[3];
212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
213 fSPDdetzcentre[0] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
215 fSPDdetzcentre[1] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
217 fSPDdetzcentre[2] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
219 fSPDdetzcentre[3] = tr[2];
220
afd25725 221 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 222 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
223 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
224 fUseTGeo = 3;
225 }
e50912db 226
227 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
228 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
229
81e97e0d 230 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
231
7167ae53 232 // only for plane efficiency evaluation
58e8dc31 233 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
234 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 235 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 236 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 237 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
238 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
239 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
240 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 241 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 242 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
243 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 244 }
628e7bb0 245}
44347160 246//------------------------------------------------------------------------
8221b41b 247AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
248fI(tracker.fI),
249fBestTrack(tracker.fBestTrack),
250fTrackToFollow(tracker.fTrackToFollow),
251fTrackHypothesys(tracker.fTrackHypothesys),
252fBestHypothesys(tracker.fBestHypothesys),
253fOriginal(tracker.fOriginal),
254fCurrentEsdTrack(tracker.fCurrentEsdTrack),
255fPass(tracker.fPass),
256fAfterV0(tracker.fAfterV0),
257fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 258fCoefficients(tracker.fCoefficients),
8221b41b 259fEsd(tracker.fEsd),
e50912db 260fTrackingPhase(tracker.fTrackingPhase),
afd25725 261fUseTGeo(tracker.fUseTGeo),
e50912db 262fNtracks(tracker.fNtracks),
263fxOverX0Pipe(tracker.fxOverX0Pipe),
264fxTimesRhoPipe(tracker.fxTimesRhoPipe),
265fxOverX0PipeTrks(0),
266fxTimesRhoPipeTrks(0),
267fxOverX0ShieldTrks(0),
268fxTimesRhoShieldTrks(0),
269fxOverX0LayerTrks(0),
270fxTimesRhoLayerTrks(0),
4a66240a 271fDebugStreamer(tracker.fDebugStreamer),
23197852 272fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 273fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 274fPlaneEff(tracker.fPlaneEff) {
8221b41b 275 //Copy constructor
e50912db 276 Int_t i;
277 for(i=0;i<4;i++) {
278 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
279 }
280 for(i=0;i<6;i++) {
281 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
282 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
283 }
284 for(i=0;i<2;i++) {
285 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
286 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
287 }
8221b41b 288}
44347160 289//------------------------------------------------------------------------
8221b41b 290AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
291 //Assignment operator
292 this->~AliITStrackerMI();
293 new(this) AliITStrackerMI(tracker);
294 return *this;
295}
44347160 296//------------------------------------------------------------------------
628e7bb0 297AliITStrackerMI::~AliITStrackerMI()
298{
299 //
300 //destructor
301 //
e50912db 302 if (fCoefficients) delete [] fCoefficients;
303 DeleteTrksMaterialLUT();
81e97e0d 304 if (fDebugStreamer) {
305 //fDebugStreamer->Close();
306 delete fDebugStreamer;
307 }
23197852 308 if(fITSChannelStatus) delete fITSChannelStatus;
309 if(fPlaneEff) delete fPlaneEff;
e43c066c 310}
44347160 311//------------------------------------------------------------------------
a70ed6ad 312void AliITStrackerMI::SetLayersNotToSkip(const Int_t *l) {
e43c066c 313 //--------------------------------------------------------------------
314 //This function set masks of the layers which must be not skipped
315 //--------------------------------------------------------------------
e50912db 316 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
e43c066c 317}
44347160 318//------------------------------------------------------------------------
23197852 319void AliITStrackerMI::ReadBadFromDetTypeRec() {
320 //--------------------------------------------------------------------
321 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
322 //i.e. from OCDB
323 //--------------------------------------------------------------------
324
325 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
326
4187a601 327 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 328
a70ed6ad 329 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 330
331 // ITS channels map
332 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 333 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 334
335 // ITS detectors and chips
336 Int_t i=0,j=0,k=0,ndet=0;
337 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 338 Int_t nBadDetsPerLayer=0;
23197852 339 ndet=AliITSgeomTGeo::GetNDetectors(i);
340 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
341 for (k=1; k<ndet+1; k++) {
342 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 343 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 344 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 345 } // end loop on detectors
346 } // end loop on ladders
4187a601 347 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 348 } // end loop on layers
349
350 return;
351}
352//------------------------------------------------------------------------
e43c066c 353Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
354 //--------------------------------------------------------------------
355 //This function loads ITS clusters
356 //--------------------------------------------------------------------
00a7cc50 357 TBranch *branch=cTree->GetBranch("ITSRecPoints");
e43c066c 358 if (!branch) {
359 Error("LoadClusters"," can't get the branch !\n");
360 return 1;
361 }
362
23197852 363 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
e43c066c 364 branch->SetAddress(&clusters);
365
23197852 366 Int_t i=0,j=0,ndet=0;
e43c066c 367 Int_t detector=0;
23197852 368 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
369 ndet=fgLayers[i].GetNdetectors();
e43c066c 370 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
371 for (; j<jmax; j++) {
372 if (!cTree->GetEvent(j)) continue;
373 Int_t ncl=clusters->GetEntriesFast();
374 SignDeltas(clusters,GetZ());
1f3e997f 375
e43c066c 376 while (ncl--) {
00a7cc50 377 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 378 detector=c->GetDetectorIndex();
a504d56f 379
75fb37cc 380 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
a504d56f 381
00a7cc50 382 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
e43c066c 383 }
384 clusters->Delete();
afd25725 385 // add dead zone "virtual" cluster in SPD, if there is a cluster within
386 // zwindow cm from the dead zone
387 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 388 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 389 Int_t lab[4] = {0,0,0,detector};
390 Int_t info[3] = {0,0,i};
6518a6c5 391 Float_t q = 0.; // this identifies virtual clusters
afd25725 392 Float_t hit[5] = {xdead,
393 0.,
394 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
395 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
396 q};
397 Bool_t local = kTRUE;
398 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 399 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 400 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
401 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 402 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 403 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
404 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 405 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 406 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
407 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 408 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 409 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
410 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 411 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 412 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
413 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 414 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 415 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
416 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 417 }
6518a6c5 418 } // "virtual" clusters in SPD
e43c066c 419
420 }
421 //
422 fgLayers[i].ResetRoad(); //road defined by the cluster density
423 fgLayers[i].SortClusters();
424 }
425
23197852 426 dummy.Clear();
427
e43c066c 428 return 0;
429}
44347160 430//------------------------------------------------------------------------
e43c066c 431void AliITStrackerMI::UnloadClusters() {
432 //--------------------------------------------------------------------
433 //This function unloads ITS clusters
434 //--------------------------------------------------------------------
e50912db 435 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 436}
44347160 437//------------------------------------------------------------------------
23197852 438void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
439 //--------------------------------------------------------------------
440 // Publishes all pointers to clusters known to the tracker into the
441 // passed object array.
442 // The ownership is not transfered - the caller is not expected to delete
443 // the clusters.
444 //--------------------------------------------------------------------
445
446 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
447 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
448 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
449 array->AddLast(cl);
450 }
451 }
452
453 return;
454}
455//------------------------------------------------------------------------
44396017 456Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 457 //--------------------------------------------------------------------
458 // Correction for the material between the TPC and the ITS
e43c066c 459 //--------------------------------------------------------------------
e50912db 460 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
463 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
464 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
466 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
467 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 468 } else {
44396017 469 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 470 return 0;
e43c066c 471 }
472
e50912db 473 return 1;
e43c066c 474}
44347160 475//------------------------------------------------------------------------
af885e0f 476Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 477 //--------------------------------------------------------------------
478 // This functions reconstructs ITS tracks
479 // The clusters must be already loaded !
480 //--------------------------------------------------------------------
fddf8459 481
482
e50912db 483 fTrackingPhase="Clusters2Tracks";
484
e43c066c 485 TObjArray itsTracks(15000);
628e7bb0 486 fOriginal.Clear();
81e97e0d 487 fEsd = event; // store pointer to the esd
afd25725 488
9a5326b1 489 // temporary (for cosmics)
490 if(event->GetVertex()) {
491 TString title = event->GetVertex()->GetTitle();
492 if(title.Contains("cosmics")) {
493 Double_t xyz[3]={GetX(),GetY(),GetZ()};
494 Double_t exyz[3]={0.1,0.1,0.1};
495 SetVertex(xyz,exyz);
496 }
497 }
498 // temporary
afd25725 499
e43c066c 500 {/* Read ESD tracks */
afd25725 501 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 502 Int_t nentr=event->GetNumberOfTracks();
503 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
504 while (nentr--) {
505 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 506 // ---- for debugging:
507 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
e43c066c 508
509 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
510 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
511 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 512 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 513 AliITStrackMI *t=0;
e43c066c 514 try {
15dd636f 515 t=new AliITStrackMI(*esd);
e43c066c 516 } catch (const Char_t *msg) {
628e7bb0 517 //Warning("Clusters2Tracks",msg);
e43c066c 518 delete t;
519 continue;
520 }
b9671574 521 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
522 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 523
524
afd25725 525 // look at the ESD mass hypothesys !
526 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 527 // write expected q
b9671574 528 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 529
afd25725 530 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 531 //track - can be V0 according to TPC
afd25725 532 } else {
533 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 534 delete t;
535 continue;
e50912db 536 }
afd25725 537 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 538 delete t;
539 continue;
540 }
6c23ffed 541 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 542 delete t;
543 continue;
544 }
e50912db 545 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 546 delete t;
547 continue;
548 }
e43c066c 549 }
b9671574 550 t->SetReconstructed(kFALSE);
e43c066c 551 itsTracks.AddLast(t);
628e7bb0 552 fOriginal.AddLast(t);
e43c066c 553 }
554 } /* End Read ESD tracks */
555
556 itsTracks.Sort();
628e7bb0 557 fOriginal.Sort();
e43c066c 558 Int_t nentr=itsTracks.GetEntriesFast();
559 fTrackHypothesys.Expand(nentr);
81e97e0d 560 fBestHypothesys.Expand(nentr);
afd25725 561 MakeCoefficients(nentr);
513ab112 562 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 563 Int_t ntrk=0;
afd25725 564 // THE TWO TRACKING PASSES
e43c066c 565 for (fPass=0; fPass<2; fPass++) {
566 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 567 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 568 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 569 if (t==0) continue; //this track has been already tracked
1c97ce2f 570 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 571 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 572 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 573 if (fConstraint[fPass]) {
574 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
575 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
576 }
e43c066c 577
578 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 579 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 580 fI = 6;
581 ResetTrackToFollow(*t);
582 ResetBestTrack();
6518a6c5 583
e50912db 584 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 585
e43c066c 586
587 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
588 //
ae00569a 589 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 590 if (!besttrack) continue;
591 besttrack->SetLabel(tpcLabel);
592 // besttrack->CookdEdx();
593 CookdEdx(besttrack);
b9671574 594 besttrack->SetFakeRatio(1.);
e43c066c 595 CookLabel(besttrack,0.); //For comparison only
e43c066c 596 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 597
628e7bb0 598 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
599
b9671574 600 t->SetReconstructed(kTRUE);
1c97ce2f 601 ntrk++;
4187a601 602 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 603 }
604 GetBestHypothesysMIP(itsTracks);
afd25725 605 } // end loop on the two tracking passes
e43c066c 606
cd90f0a2 607 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
608 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 609 fAfterV0 = kTRUE;
628e7bb0 610 //
e43c066c 611 itsTracks.Delete();
612 //
613 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 614 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 615 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
616 if (array) array->Delete();
617 delete fTrackHypothesys.RemoveAt(ientry);
618 }
619
620 fTrackHypothesys.Delete();
81e97e0d 621 fBestHypothesys.Delete();
628e7bb0 622 fOriginal.Clear();
afd25725 623 delete [] fCoefficients;
624 fCoefficients=0;
e50912db 625 DeleteTrksMaterialLUT();
626
e43c066c 627 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
e50912db 628
629 fTrackingPhase="Default";
628e7bb0 630
e43c066c 631 return 0;
632}
44347160 633//------------------------------------------------------------------------
af885e0f 634Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 635 //--------------------------------------------------------------------
636 // This functions propagates reconstructed ITS tracks back
637 // The clusters must be loaded !
638 //--------------------------------------------------------------------
e50912db 639 fTrackingPhase="PropagateBack";
e43c066c 640 Int_t nentr=event->GetNumberOfTracks();
641 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
642
643 Int_t ntrk=0;
644 for (Int_t i=0; i<nentr; i++) {
645 AliESDtrack *esd=event->GetTrack(i);
646
647 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
648 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
649
15dd636f 650 AliITStrackMI *t=0;
e43c066c 651 try {
15dd636f 652 t=new AliITStrackMI(*esd);
e43c066c 653 } catch (const Char_t *msg) {
628e7bb0 654 //Warning("PropagateBack",msg);
e43c066c 655 delete t;
656 continue;
657 }
b9671574 658 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 659
660 ResetTrackToFollow(*t);
661
9a5326b1 662 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 663 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 664 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
665 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
666 fTrackToFollow.StartTimeIntegral();
667 // from vertex to outside pipe
668 CorrectForPipeMaterial(&fTrackToFollow,"outward");
e43c066c 669 }
670
6c94f330 671 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 672 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
673 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 674 delete t;
675 continue;
676 }
677 fTrackToFollow.SetLabel(t->GetLabel());
678 //fTrackToFollow.CookdEdx();
679 CookLabel(&fTrackToFollow,0.); //For comparison only
680 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
681 //UseClusters(&fTrackToFollow);
682 ntrk++;
683 }
684 delete t;
685 }
686
687 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
688
e50912db 689 fTrackingPhase="Default";
690
e43c066c 691 return 0;
692}
44347160 693//------------------------------------------------------------------------
af885e0f 694Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 695 //--------------------------------------------------------------------
696 // This functions refits ITS tracks using the
697 // "inward propagated" TPC tracks
698 // The clusters must be loaded !
699 //--------------------------------------------------------------------
e50912db 700 fTrackingPhase="RefitInward";
44396017 701
cd90f0a2 702 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 703
e43c066c 704 Int_t nentr=event->GetNumberOfTracks();
705 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
706
707 Int_t ntrk=0;
708 for (Int_t i=0; i<nentr; i++) {
709 AliESDtrack *esd=event->GetTrack(i);
710
711 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
712 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
713 if (esd->GetStatus()&AliESDtrack::kTPCout)
714 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
715
15dd636f 716 AliITStrackMI *t=0;
e43c066c 717 try {
15dd636f 718 t=new AliITStrackMI(*esd);
e43c066c 719 } catch (const Char_t *msg) {
628e7bb0 720 //Warning("RefitInward",msg);
e43c066c 721 delete t;
722 continue;
723 }
b9671574 724 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 725 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 726 delete t;
727 continue;
728 }
729
730 ResetTrackToFollow(*t);
731 fTrackToFollow.ResetClusters();
732
733 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 734 fTrackToFollow.ResetCovariance(10.);
e43c066c 735
736 //Refitting...
58e8dc31 737 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
738 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 739
4187a601 740 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 741 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 742 AliDebug(2," refit OK");
e43c066c 743 fTrackToFollow.SetLabel(t->GetLabel());
744 // fTrackToFollow.CookdEdx();
745 CookdEdx(&fTrackToFollow);
746
747 CookLabel(&fTrackToFollow,0.0); //For comparison only
748
9a5326b1 749 //The beam pipe
e50912db 750 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 751 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 752 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 753 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
754 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 755 Double_t r[3]={0.,0.,0.};
9a5326b1 756 Double_t maxD=3.;
757 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
758 ntrk++;
e43c066c 759 }
760 }
761 delete t;
762 }
763
764 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
765
e50912db 766 fTrackingPhase="Default";
767
e43c066c 768 return 0;
769}
44347160 770//------------------------------------------------------------------------
e43c066c 771AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
772 //--------------------------------------------------------------------
773 // Return pointer to a given cluster
774 //--------------------------------------------------------------------
775 Int_t l=(index & 0xf0000000) >> 28;
776 Int_t c=(index & 0x0fffffff) >> 00;
777 return fgLayers[l].GetCluster(c);
778}
9a5326b1 779//------------------------------------------------------------------------
df29e9a4 780Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 781 //--------------------------------------------------------------------
df29e9a4 782 // Get track space point with index i
9a5326b1 783 //--------------------------------------------------------------------
60066577 784
78b03929 785 Int_t l=(index & 0xf0000000) >> 28;
786 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 787 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 788 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 789
60066577 790 Float_t xyz[3];
791 Float_t cov[6];
792 cl->GetGlobalXYZ(xyz);
793 cl->GetGlobalCov(cov);
794 p.SetXYZ(xyz, cov);
be77c8c9 795 p.SetCharge(cl->GetQ());
ebbcf1ea 796 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 797 p.SetChargeRatio(cl->GetChargeRatio());
ae079791 798 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 799 switch (l) {
800 case 0:
ae079791 801 iLayer = AliGeomManager::kSPD1;
df29e9a4 802 break;
803 case 1:
ae079791 804 iLayer = AliGeomManager::kSPD2;
df29e9a4 805 break;
806 case 2:
ae079791 807 iLayer = AliGeomManager::kSDD1;
df29e9a4 808 break;
809 case 3:
ae079791 810 iLayer = AliGeomManager::kSDD2;
9a5326b1 811 break;
812 case 4:
813 iLayer = AliGeomManager::kSSD1;
814 break;
815 case 5:
816 iLayer = AliGeomManager::kSSD2;
817 break;
818 default:
819 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
820 break;
821 };
822 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
823 p.SetVolumeID((UShort_t)volid);
824 return kTRUE;
825}
826//------------------------------------------------------------------------
827Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
828 AliTrackPoint& p, const AliESDtrack *t) {
829 //--------------------------------------------------------------------
830 // Get track space point with index i
831 // (assign error estimated during the tracking)
832 //--------------------------------------------------------------------
833
834 Int_t l=(index & 0xf0000000) >> 28;
835 Int_t c=(index & 0x0fffffff) >> 00;
836 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
837 Int_t idet = cl->GetDetectorIndex();
4187a601 838
9a5326b1 839 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
840
841 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
842 Float_t detxy[2];
843 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
844 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
845 Double_t alpha = t->GetAlpha();
846 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 847 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 848 phi += alpha-det.GetPhi();
849 Float_t tgphi = TMath::Tan(phi);
850
851 Float_t tgl = t->GetTgl(); // tgl about const along track
852 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
853
854 Float_t errlocalx,errlocalz;
8c139cf3 855 Bool_t addMisalErr=kFALSE;
856 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz,addMisalErr);
9a5326b1 857
858 Float_t xyz[3];
859 Float_t cov[6];
860 cl->GetGlobalXYZ(xyz);
861 // cl->GetGlobalCov(cov);
862 Float_t pos[3] = {0.,0.,0.};
863 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
864 tmpcl.GetGlobalCov(cov);
865
866 p.SetXYZ(xyz, cov);
be77c8c9 867 p.SetCharge(cl->GetQ());
ebbcf1ea 868 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 869 p.SetChargeRatio(cl->GetChargeRatio());
9a5326b1 870
871 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
872 switch (l) {
873 case 0:
874 iLayer = AliGeomManager::kSPD1;
875 break;
876 case 1:
877 iLayer = AliGeomManager::kSPD2;
878 break;
879 case 2:
880 iLayer = AliGeomManager::kSDD1;
881 break;
882 case 3:
883 iLayer = AliGeomManager::kSDD2;
df29e9a4 884 break;
885 case 4:
ae079791 886 iLayer = AliGeomManager::kSSD1;
df29e9a4 887 break;
888 case 5:
ae079791 889 iLayer = AliGeomManager::kSSD2;
df29e9a4 890 break;
891 default:
892 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
893 break;
894 };
ae079791 895 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 896
df29e9a4 897 p.SetVolumeID((UShort_t)volid);
898 return kTRUE;
899}
44347160 900//------------------------------------------------------------------------
81e97e0d 901void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 902{
903 //--------------------------------------------------------------------
904 // Follow prolongation tree
905 //--------------------------------------------------------------------
81e97e0d 906 //
afd25725 907 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
908 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
909
2755f080 910
b9671574 911 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 912 if (esd->GetV0Index(0)>0) {
81e97e0d 913 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 914 // mapping of ESD track is different as ITS track in Containers
81e97e0d 915 // Need something more stable
44347160 916 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 917 for (Int_t i=0;i<3;i++){
918 Int_t index = esd->GetV0Index(i);
919 if (index==0) break;
d6a49f20 920 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 921 if (vertex->GetStatus()<0) continue; // rejected V0
922 //
afd25725 923 if (esd->GetSign()>0) {
924 vertex->SetIndex(0,esdindex);
925 } else {
926 vertex->SetIndex(1,esdindex);
927 }
81e97e0d 928 }
929 }
930 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
931 if (!bestarray){
932 bestarray = new TObjArray(5);
933 fBestHypothesys.AddAt(bestarray,esdindex);
934 }
e43c066c 935
81e97e0d 936 //
e43c066c 937 //setup tree of the prolongations
938 //
15dd636f 939 static AliITStrackMI tracks[7][100];
940 AliITStrackMI *currenttrack;
941 static AliITStrackMI currenttrack1;
942 static AliITStrackMI currenttrack2;
943 static AliITStrackMI backuptrack;
e43c066c 944 Int_t ntracks[7];
945 Int_t nindexes[7][100];
946 Float_t normalizedchi2[100];
947 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 948 otrack->SetNSkipped(0);
15dd636f 949 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 950 ntracks[6]=1;
81e97e0d 951 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 952 Int_t modstatus = 1; // found
953 Float_t xloc,zloc;
e43c066c 954 //
955 //
956 // follow prolongations
e50912db 957 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 958 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 959 fI = ilayer;
e43c066c 960 //
2755f080 961 AliITSlayer &layer=fgLayers[ilayer];
962 Double_t r = layer.GetR();
e43c066c 963 ntracks[ilayer]=0;
964 //
965 //
2755f080 966 Int_t nskipped=0;
e43c066c 967 Float_t nused =0;
e50912db 968 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 969 //set current track
970 if (ntracks[ilayer]>=100) break;
b9671574 971 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
972 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 973 if (ntracks[ilayer]>15+ilayer){
b9671574 974 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
975 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 976 }
977
15dd636f 978 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 979
afd25725 980 // material between SSD and SDD, SDD and SPD
e50912db 981 if (ilayer==3)
982 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
983 if (ilayer==1)
984 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 985
2755f080 986 // detector number
8602c008 987 Double_t phi,z;
988 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 989 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 990
991 Double_t trackGlobXYZ1[3];
d1181f10 992 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 993
2755f080 994 // Get the budget to the primary vertex for the current track being prolonged
995 Double_t budgetToPrimVertex = GetEffectiveThickness();
996
997 // check if we allow a prolongation without point
6518a6c5 998 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 999 if (skip) {
1000 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1001 // propagate to the layer radius
d1181f10 1002 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1003 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1004 // apply correction for material of the current layer
1005 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1006 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
9fd412a8 1007 vtrack->SetClIndex(ilayer,-1);
ae00569a 1008 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1009 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1010 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1011 }
2755f080 1012 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1013 ntracks[ilayer]++;
6518a6c5 1014 continue;
2755f080 1015 }
1016
1017 // track outside layer acceptance in z
1018 if (idet<0) continue;
1019
1020 //propagate to the intersection with the detector plane
1021 const AliITSdetector &det=layer.GetDetector(idet);
1022 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1023 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1024 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1025 currenttrack1.SetDetectorIndex(idet);
1026 currenttrack2.SetDetectorIndex(idet);
d1181f10 1027 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1028
afd25725 1029 //***************
1c97ce2f 1030 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1031 //
2755f080 1032 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1033 Double_t zmin,zmax,ymin,ymax;
1034 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1035
afd25725 1036 // select clusters in road
e43c066c 1037 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1038 //********************
44347160 1039
afd25725 1040 // Define criteria for track-cluster association
44347160 1041 Double_t msz = currenttrack1.GetSigmaZ2() +
1042 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1043 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1044 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1045 Double_t msy = currenttrack1.GetSigmaY2() +
1046 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1047 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1048 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1049 if (constrain) {
1050 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1051 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1052 } else {
1053 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1054 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1055 }
1056 msz = 1./msz; // 1/RoadZ^2
1057 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1058
e43c066c 1059 //
e43c066c 1060 //
afd25725 1061 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1062 //
afd25725 1063 const AliITSRecPoint *cl=0;
1064 Int_t clidx=-1;
1065 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1066 Bool_t deadzoneSPD=kFALSE;
e43c066c 1067 currenttrack = &currenttrack1;
6518a6c5 1068
ae00569a 1069 // check if the road contains a dead zone
23197852 1070 Bool_t noClusters = kFALSE;
1071 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1072 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1073 Double_t dz=0.5*(zmax-zmin);
1074 Double_t dy=0.5*(ymax-ymin);
1075 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1076 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1077 // create a prolongation without clusters (check also if there are no clusters in the road)
1078 if (dead ||
23197852 1079 (noClusters &&
ae00569a 1080 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1081 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1082 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1083 if (dead==0) {
1084 modstatus = 5; // no cls in road
1085 } else if (dead==1) {
1086 modstatus = 7; // holes in z in SPD
23197852 1087 } else if (dead==2 || dead==3) {
ae00569a 1088 modstatus = 2; // dead from OCDB
1089 }
1090 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1091 // apply correction for material of the current layer
1092 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1093 if (constrain) { // apply vertex constrain
1094 updatetrack->SetConstrain(constrain);
1095 Bool_t isPrim = kTRUE;
1096 if (ilayer<4) { // check that it's close to the vertex
1097 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1098 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1099 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1100 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1101 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1102 }
1103 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1104 }
ae00569a 1105 if (dead) {
1106 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1107 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1108 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1109 deadzoneSPD=kTRUE;
1110 }
6518a6c5 1111 }
1112 ntracks[ilayer]++;
1113 }
1114
ae00569a 1115 clidx=-1;
6518a6c5 1116 // loop over clusters in the road
afd25725 1117 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1118 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1119 Bool_t changedet =kFALSE;
6518a6c5 1120 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1121 Int_t idetc=cl->GetDetectorIndex();
afd25725 1122
a5d0fae6 1123 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1124 // take into account misalignment (bring track to real detector plane)
1125 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1126 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1127 // a first cut on track-cluster distance
1128 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1129 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1130 { // cluster not associated to track
4187a601 1131 AliDebug(2,"not associated");
1c97ce2f 1132 continue;
1133 }
1134 // bring track back to ideal detector plane
9be1d1c7 1135 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1136 } else { // have to move track to cluster's detector
a5d0fae6 1137 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1138 // a first cut on track-cluster distance
a5d0fae6 1139 Double_t y;
1c97ce2f 1140 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1141 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1142 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1143 continue; // cluster not associated to track
e43c066c 1144 //
15dd636f 1145 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1146 changedet = kTRUE;
e43c066c 1147 currenttrack =&currenttrack2;
a5d0fae6 1148 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1149 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1150 changedet = kFALSE;
e43c066c 1151 continue;
1152 }
a5d0fae6 1153 currenttrack->SetDetectorIndex(idetc);
e50912db 1154 // Get again the budget to the primary vertex
1155 // for the current track being prolonged, if had to change detector
1156 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1157 }
1158
afd25725 1159 // calculate track-clusters chi2
1160 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1161 // chi2 cut
4187a601 1162 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1163 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1164 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1165 if (ntracks[ilayer]>=100) continue;
15dd636f 1166 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1167 updatetrack->SetClIndex(ilayer,-1);
afd25725 1168 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1169
6518a6c5 1170 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1171 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1172 AliDebug(2,"update failed");
1c97ce2f 1173 continue;
1174 }
09cf9d66 1175 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1176 modstatus = 1; // found
6518a6c5 1177 } else { // virtual cluster in dead zone
b9671574 1178 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
6518a6c5 1179 updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1180 modstatus = 7; // holes in z in SPD
1181 }
1182
1183 if (changedet) {
1184 Float_t xlocnewdet,zlocnewdet;
d1181f10 1185 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1186 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1187 }
ae00569a 1188 } else {
1189 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1190 }
afd25725 1191 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1192
1193 // apply correction for material of the current layer
e50912db 1194 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1195
afd25725 1196 if (constrain) { // apply vertex constrain
b9671574 1197 updatetrack->SetConstrain(constrain);
e43c066c 1198 Bool_t isPrim = kTRUE;
afd25725 1199 if (ilayer<4) { // check that it's close to the vertex
b9671574 1200 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1201 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1202 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1203 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1204 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1205 }
afd25725 1206 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1207 } //apply vertex constrain
1208 ntracks[ilayer]++;
afd25725 1209 } // create new hypothesis
4187a601 1210 else {
1211 AliDebug(2,"chi2 too large");
1212 }
1213
2755f080 1214 } // loop over possible prolongations
1215
1216 // allow one prolongation without clusters
6518a6c5 1217 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1218 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1219 // apply correction for material of the current layer
1220 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1221 vtrack->SetClIndex(ilayer,-1);
ae00569a 1222 modstatus = 3; // skipped
1223 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1224 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1225 vtrack->IncrementNSkipped();
e43c066c 1226 ntracks[ilayer]++;
1227 }
628e7bb0 1228
2755f080 1229 // allow one prolongation without clusters for tracks with |tgl|>1.1
1230 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
628e7bb0 1231 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1232 // apply correction for material of the current layer
1233 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1234 vtrack->SetClIndex(ilayer,-1);
ae00569a 1235 modstatus = 3; // skipped
1236 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1237 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1238 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
628e7bb0 1239 ntracks[ilayer]++;
1240 }
1241
e43c066c 1242
e50912db 1243 } // loop over tracks in layer ilayer+1
afd25725 1244
1245 //loop over track candidates for the current layer
e43c066c 1246 //
1247 //
1248 Int_t accepted=0;
1249
afd25725 1250 Int_t golden=0;
e43c066c 1251 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1252 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1253 if (normalizedchi2[itrack] <
1254 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1255 if (ilayer>4) {
1256 accepted++;
1257 } else {
1258 if (constrain) { // constrain
afd25725 1259 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1260 accepted++;
44347160 1261 } else { // !constrain
afd25725 1262 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1263 accepted++;
44347160 1264 }
e43c066c 1265 }
1266 }
afd25725 1267 // sort tracks by increasing normalized chi2
1268 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1269 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1270 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1271 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1272 } // end loop over layers
1273
afd25725 1274
1275 //
1276 // Now select tracks to be kept
1277 //
44347160 1278 Int_t max = constrain ? 20 : 5;
e43c066c 1279
afd25725 1280 // tracks that reach layer 0 (SPD inner)
44347160 1281 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1282 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1283 if (track.GetNumberOfClusters()<2) continue;
afd25725 1284 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1285 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1286 continue;
1287 }
15dd636f 1288 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1289 }
afd25725 1290
1291 // tracks that reach layer 1 (SPD outer)
628e7bb0 1292 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1293 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1294 if (track.GetNumberOfClusters()<4) continue;
afd25725 1295 if (!constrain && track.GetNormChi2(1) >
1296 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1297 if (constrain) track.IncrementNSkipped();
81e97e0d 1298 if (!constrain) {
b9671574 1299 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1300 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1301 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1302 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1303 }
1304 }
15dd636f 1305 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1306 }
afd25725 1307
6518a6c5 1308 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1309 if (!constrain){
628e7bb0 1310 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1311 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1312 if (track.GetNumberOfClusters()<3) continue;
afd25725 1313 if (!constrain && track.GetNormChi2(2) >
1314 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1315 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1316 if (!constrain){
b9671574 1317 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1318 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1319 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1320 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1321 }
1322 }
15dd636f 1323 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1324 }
1325 }
81e97e0d 1326
afd25725 1327 if (!constrain) {
81e97e0d 1328 //
afd25725 1329 // register best track of each layer - important for V0 finder
81e97e0d 1330 //
1331 for (Int_t ilayer=0;ilayer<5;ilayer++){
1332 if (ntracks[ilayer]==0) continue;
1333 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1334 if (track.GetNumberOfClusters()<1) continue;
1335 CookLabel(&track,0);
1336 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1337 }
1338 }
1339 //
1340 // update TPC V0 information
1341 //
b9671574 1342 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1343 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1344 for (Int_t i=0;i<3;i++){
b9671574 1345 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1346 if (index==0) break;
44347160 1347 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1348 if (vertex->GetStatus()<0) continue; // rejected V0
1349 //
6c94f330 1350 if (otrack->GetSign()>0) {
81e97e0d 1351 vertex->SetIndex(0,esdindex);
1352 }
1353 else{
1354 vertex->SetIndex(1,esdindex);
1355 }
1356 //find nearest layer with track info
b75d63a7 1357 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1358 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1359 Int_t nearest = nearestold;
1360 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1361 if (ntracks[nearest]==0){
1362 nearest = ilayer;
1363 }
1364 }
1365 //
1366 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1367 if (nearestold<5&&nearest<5){
b9671574 1368 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1369 if (accept){
6c94f330 1370 if (track.GetSign()>0) {
b75d63a7 1371 vertex->SetParamP(track);
81e97e0d 1372 vertex->Update(fprimvertex);
44347160 1373 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1374 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1375 }else{
b75d63a7 1376 vertex->SetParamN(track);
81e97e0d 1377 vertex->Update(fprimvertex);
1378 //vertex->SetIndex(1,track.fESDtrack->GetID());
1379 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1380 }
1381 vertex->SetStatus(vertex->GetStatus()+1);
1382 }else{
44347160 1383 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1384 }
1385 }
81e97e0d 1386 }
afd25725 1387 }
1388
e43c066c 1389}
44347160 1390//------------------------------------------------------------------------
e43c066c 1391AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1392{
1393 //--------------------------------------------------------------------
1394 //
1395 //
1396 return fgLayers[layer];
1397}
44347160 1398//------------------------------------------------------------------------
8221b41b 1399AliITStrackerMI::AliITSlayer::AliITSlayer():
1400fR(0),
1401fPhiOffset(0),
1402fNladders(0),
1403fZOffset(0),
1404fNdetectors(0),
1405fDetectors(0),
1406fN(0),
1407fDy5(0),
1408fDy10(0),
1409fDy20(0),
1410fClustersCs(0),
1411fClusterIndexCs(0),
1412fYcs(0),
1413fZcs(0),
1414fNcs(0),
1415fCurrentSlice(-1),
1416fZmax(0),
1417fYmin(0),
1418fYmax(0),
1419fI(0),
1420fImax(0),
1421fSkip(0),
1422fAccepted(0),
1423fRoad(0){
e43c066c 1424 //--------------------------------------------------------------------
1425 //default AliITSlayer constructor
1426 //--------------------------------------------------------------------
e50912db 1427 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1428 fClusterWeight[i]=0;
1429 fClusterTracks[0][i]=-1;
1430 fClusterTracks[1][i]=-1;
1431 fClusterTracks[2][i]=-1;
1432 fClusterTracks[3][i]=-1;
1433 }
1434}
44347160 1435//------------------------------------------------------------------------
e43c066c 1436AliITStrackerMI::AliITSlayer::
8221b41b 1437AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1438fR(r),
1439fPhiOffset(p),
1440fNladders(nl),
1441fZOffset(z),
1442fNdetectors(nd),
1443fDetectors(0),
1444fN(0),
1445fDy5(0),
1446fDy10(0),
1447fDy20(0),
1448fClustersCs(0),
1449fClusterIndexCs(0),
1450fYcs(0),
1451fZcs(0),
1452fNcs(0),
1453fCurrentSlice(-1),
1454fZmax(0),
1455fYmin(0),
1456fYmax(0),
1457fI(0),
1458fImax(0),
1459fSkip(0),
1460fAccepted(0),
1461fRoad(0) {
e43c066c 1462 //--------------------------------------------------------------------
1463 //main AliITSlayer constructor
1464 //--------------------------------------------------------------------
e43c066c 1465 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1466 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1467}
44347160 1468//------------------------------------------------------------------------
8221b41b 1469AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1470fR(layer.fR),
1471fPhiOffset(layer.fPhiOffset),
1472fNladders(layer.fNladders),
1473fZOffset(layer.fZOffset),
1474fNdetectors(layer.fNdetectors),
1475fDetectors(layer.fDetectors),
1476fN(layer.fN),
1477fDy5(layer.fDy5),
1478fDy10(layer.fDy10),
1479fDy20(layer.fDy20),
1480fClustersCs(layer.fClustersCs),
1481fClusterIndexCs(layer.fClusterIndexCs),
1482fYcs(layer.fYcs),
1483fZcs(layer.fZcs),
1484fNcs(layer.fNcs),
1485fCurrentSlice(layer.fCurrentSlice),
1486fZmax(layer.fZmax),
1487fYmin(layer.fYmin),
1488fYmax(layer.fYmax),
1489fI(layer.fI),
1490fImax(layer.fImax),
1491fSkip(layer.fSkip),
1492fAccepted(layer.fAccepted),
1493fRoad(layer.fRoad){
1494 //Copy constructor
1495}
44347160 1496//------------------------------------------------------------------------
e43c066c 1497AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1498 //--------------------------------------------------------------------
1499 // AliITSlayer destructor
1500 //--------------------------------------------------------------------
23197852 1501 delete [] fDetectors;
e43c066c 1502 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1503 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1504 fClusterWeight[i]=0;
1505 fClusterTracks[0][i]=-1;
1506 fClusterTracks[1][i]=-1;
1507 fClusterTracks[2][i]=-1;
1508 fClusterTracks[3][i]=-1;
1509 }
1510}
44347160 1511//------------------------------------------------------------------------
e43c066c 1512void AliITStrackerMI::AliITSlayer::ResetClusters() {
1513 //--------------------------------------------------------------------
1514 // This function removes loaded clusters
1515 //--------------------------------------------------------------------
1516 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1517 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1518 fClusterWeight[i]=0;
1519 fClusterTracks[0][i]=-1;
1520 fClusterTracks[1][i]=-1;
1521 fClusterTracks[2][i]=-1;
1522 fClusterTracks[3][i]=-1;
1523 }
1524
1525 fN=0;
1526 fI=0;
1527}
44347160 1528//------------------------------------------------------------------------
e43c066c 1529void AliITStrackerMI::AliITSlayer::ResetWeights() {
1530 //--------------------------------------------------------------------
1531 // This function reset weights of the clusters
1532 //--------------------------------------------------------------------
e50912db 1533 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1534 fClusterWeight[i]=0;
1535 fClusterTracks[0][i]=-1;
1536 fClusterTracks[1][i]=-1;
1537 fClusterTracks[2][i]=-1;
1538 fClusterTracks[3][i]=-1;
1539 }
1540 for (Int_t i=0; i<fN;i++) {
00a7cc50 1541 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1542 if (cl&&cl->IsUsed()) cl->Use();
1543 }
1544
1545}
44347160 1546//------------------------------------------------------------------------
e43c066c 1547void AliITStrackerMI::AliITSlayer::ResetRoad() {
1548 //--------------------------------------------------------------------
1549 // This function calculates the road defined by the cluster density
1550 //--------------------------------------------------------------------
1551 Int_t n=0;
1552 for (Int_t i=0; i<fN; i++) {
1553 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1554 }
afd25725 1555 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1556}
44347160 1557//------------------------------------------------------------------------
afd25725 1558Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1559 //--------------------------------------------------------------------
1560 //This function adds a cluster to this layer
1561 //--------------------------------------------------------------------
e50912db 1562 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1563 ::Error("InsertCluster","Too many clusters !\n");
1564 return 1;
1565 }
1566 fCurrentSlice=-1;
afd25725 1567 fClusters[fN]=cl;
1d4090b7 1568 fN++;
afd25725 1569 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1570 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1571 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1572 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1573 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
e43c066c 1574
1575 return 0;
1576}
44347160 1577//------------------------------------------------------------------------
e43c066c 1578void AliITStrackerMI::AliITSlayer::SortClusters()
1579{
1580 //
1581 //sort clusters
1582 //
00a7cc50 1583 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1584 Float_t *z = new Float_t[fN];
1585 Int_t * index = new Int_t[fN];
1586 //
1587 for (Int_t i=0;i<fN;i++){
1588 z[i] = fClusters[i]->GetZ();
1589 }
1590 TMath::Sort(fN,z,index,kFALSE);
1591 for (Int_t i=0;i<fN;i++){
1592 clusters[i] = fClusters[index[i]];
1593 }
1594 //
1595 for (Int_t i=0;i<fN;i++){
1596 fClusters[i] = clusters[i];
1597 fZ[i] = fClusters[i]->GetZ();
1598 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1599 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1600 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1601 fY[i] = y;
1602 }
1603 delete[] index;
1604 delete[] z;
1605 delete[] clusters;
1606 //
1607
e43c066c 1608 fYB[0]=10000000;
1609 fYB[1]=-10000000;
1610 for (Int_t i=0;i<fN;i++){
1611 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1612 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1613 fClusterIndex[i] = i;
1614 }
1615 //
1616 // fill slices
1617 fDy5 = (fYB[1]-fYB[0])/5.;
1618 fDy10 = (fYB[1]-fYB[0])/10.;
1619 fDy20 = (fYB[1]-fYB[0])/20.;
1620 for (Int_t i=0;i<6;i++) fN5[i] =0;
1621 for (Int_t i=0;i<11;i++) fN10[i]=0;
1622 for (Int_t i=0;i<21;i++) fN20[i]=0;
1623 //
1624 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;}
1625 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;}
1626 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;}
1627 //
1628 //
1d4090b7 1629 for (Int_t i=0;i<fN;i++)
1630 for (Int_t irot=-1;irot<=1;irot++){
1631 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1632 // slice 5
1633 for (Int_t slice=0; slice<6;slice++){
e50912db 1634 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1635 fClusters5[slice][fN5[slice]] = fClusters[i];
1636 fY5[slice][fN5[slice]] = curY;
1637 fZ5[slice][fN5[slice]] = fZ[i];
1638 fClusterIndex5[slice][fN5[slice]]=i;
1639 fN5[slice]++;
1640 }
e43c066c 1641 }
1d4090b7 1642 // slice 10
1643 for (Int_t slice=0; slice<11;slice++){
e50912db 1644 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1645 fClusters10[slice][fN10[slice]] = fClusters[i];
1646 fY10[slice][fN10[slice]] = curY;
1647 fZ10[slice][fN10[slice]] = fZ[i];
1648 fClusterIndex10[slice][fN10[slice]]=i;
1649 fN10[slice]++;
1650 }
e43c066c 1651 }
1d4090b7 1652 // slice 20
1653 for (Int_t slice=0; slice<21;slice++){
e50912db 1654 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1655 fClusters20[slice][fN20[slice]] = fClusters[i];
1656 fY20[slice][fN20[slice]] = curY;
1657 fZ20[slice][fN20[slice]] = fZ[i];
1658 fClusterIndex20[slice][fN20[slice]]=i;
1659 fN20[slice]++;
1660 }
1661 }
e43c066c 1662 }
1d4090b7 1663
1664 //
1665 // consistency check
1666 //
1667 for (Int_t i=0;i<fN-1;i++){
1668 if (fZ[i]>fZ[i+1]){
ae00569a 1669 printf("Bug\n");
e43c066c 1670 }
1671 }
1d4090b7 1672 //
1673 for (Int_t slice=0;slice<21;slice++)
1674 for (Int_t i=0;i<fN20[slice]-1;i++){
1675 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1676 printf("Bug\n");
1d4090b7 1677 }
1678 }
1679
1680
e43c066c 1681}
44347160 1682//------------------------------------------------------------------------
e43c066c 1683Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1684 //--------------------------------------------------------------------
1685 // This function returns the index of the nearest cluster
1686 //--------------------------------------------------------------------
1687 Int_t ncl=0;
1688 const Float_t *zcl;
1689 if (fCurrentSlice<0) {
1690 ncl = fN;
1691 zcl = fZ;
1692 }
1693 else{
1694 ncl = fNcs;
1695 zcl = fZcs;;
1696 }
1697
1698 if (ncl==0) return 0;
1699 Int_t b=0, e=ncl-1, m=(b+e)/2;
1700 for (; b<e; m=(b+e)/2) {
1701 // if (z > fClusters[m]->GetZ()) b=m+1;
1702 if (z > zcl[m]) b=m+1;
1703 else e=m;
1704 }
1705 return m;
1706}
44347160 1707//------------------------------------------------------------------------
1c97ce2f 1708Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1709 //--------------------------------------------------------------------
1710 // This function computes the rectangular road for this track
1711 //--------------------------------------------------------------------
1712
1713
1714 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1715 // take into account the misalignment: propagate track to misaligned detector plane
1716 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1717
1718 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1719 TMath::Sqrt(track->GetSigmaZ2() +
1720 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1721 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1722 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1723 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1724 TMath::Sqrt(track->GetSigmaY2() +
1725 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1726 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1727 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1728
1729 // track at boundary between detectors, enlarge road
1730 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1731 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1732 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1733 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1734 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1735 Float_t tgl = TMath::Abs(track->GetTgl());
1736 if (tgl > 1.) tgl=1.;
1737 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1738 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1739 Float_t snp = TMath::Abs(track->GetSnp());
1740 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1741 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1742 } // boundary
1743
1744 // add to the road a term (up to 2-3 mm) to deal with misalignments
1745 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1746 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1747
1748 Double_t r = fgLayers[ilayer].GetR();
1749 zmin = track->GetZ() - dz;
1750 zmax = track->GetZ() + dz;
1751 ymin = track->GetY() + r*det.GetPhi() - dy;
1752 ymax = track->GetY() + r*det.GetPhi() + dy;
1753
1754 // bring track back to idead detector plane
1755 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1756
1757 return kTRUE;
1758}
1759//------------------------------------------------------------------------
e43c066c 1760void AliITStrackerMI::AliITSlayer::
1761SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1762 //--------------------------------------------------------------------
1763 // This function sets the "window"
1764 //--------------------------------------------------------------------
1765
628e7bb0 1766 Double_t circle=2*TMath::Pi()*fR;
e43c066c 1767 fYmin = ymin; fYmax =ymax;
1768 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1769 if (ymiddle<fYB[0]) {
1770 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1771 } else if (ymiddle>fYB[1]) {
1772 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1773 }
ae00569a 1774
e43c066c 1775 //
1776 fCurrentSlice =-1;
1777 // defualt take all
1778 fClustersCs = fClusters;
1779 fClusterIndexCs = fClusterIndex;
1780 fYcs = fY;
1781 fZcs = fZ;
1782 fNcs = fN;
628e7bb0 1783 //
e43c066c 1784 //is in 20 slice?
1785 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1786 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1787 if (slice<0) slice=0;
1788 if (slice>20) slice=20;
1789 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1790 if (isOK) {
1791 fCurrentSlice=slice;
1792 fClustersCs = fClusters20[fCurrentSlice];
1793 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1794 fYcs = fY20[fCurrentSlice];
1795 fZcs = fZ20[fCurrentSlice];
1796 fNcs = fN20[fCurrentSlice];
1797 }
1798 }
1799 //
1800 //is in 10 slice?
1801 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1802 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1803 if (slice<0) slice=0;
1804 if (slice>10) slice=10;
1805 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1806 if (isOK) {
1807 fCurrentSlice=slice;
1808 fClustersCs = fClusters10[fCurrentSlice];
1809 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1810 fYcs = fY10[fCurrentSlice];
1811 fZcs = fZ10[fCurrentSlice];
1812 fNcs = fN10[fCurrentSlice];
1813 }
1814 }
1815 //
1816 //is in 5 slice?
1817 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1818 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1819 if (slice<0) slice=0;
1820 if (slice>5) slice=5;
1821 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1822 if (isOK) {
e43c066c 1823 fCurrentSlice=slice;
1824 fClustersCs = fClusters5[fCurrentSlice];
1825 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1826 fYcs = fY5[fCurrentSlice];
1827 fZcs = fZ5[fCurrentSlice];
1828 fNcs = fN5[fCurrentSlice];
1829 }
1830 }
628e7bb0 1831 //
e43c066c 1832 fI=FindClusterIndex(zmin); fZmax=zmax;
1833 fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
1834 fSkip = 0;
1835 fAccepted =0;
6518a6c5 1836
1837 return;
e43c066c 1838}
44347160 1839//------------------------------------------------------------------------
628e7bb0 1840Int_t AliITStrackerMI::AliITSlayer::
1841FindDetectorIndex(Double_t phi, Double_t z) const {
1842 //--------------------------------------------------------------------
1843 //This function finds the detector crossed by the track
1844 //--------------------------------------------------------------------
31fb8575 1845 Double_t dphi;
1846 if (fZOffset<0) // old geometry
1847 dphi = -(phi-fPhiOffset);
1848 else // new geometry
1849 dphi = phi-fPhiOffset;
1850
6518a6c5 1851
628e7bb0 1852 if (dphi < 0) dphi += 2*TMath::Pi();
1853 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1854 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1855 if (np>=fNladders) np-=fNladders;
1856 if (np<0) np+=fNladders;
1857
6518a6c5 1858
628e7bb0 1859 Double_t dz=fZOffset-z;
6518a6c5 1860 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1861 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1862 if (nz>=fNdetectors) return -1;
1863 if (nz<0) return -1;
1864
23197852 1865 // ad hoc correction for 3rd ladder of SDD inner layer,
1866 // which is reversed (rotated by pi around local y)
1867 // this correction is OK only from AliITSv11Hybrid onwards
1868 if (GetR()>12. && GetR()<20.) { // SDD inner
1869 if(np==2) { // 3rd ladder
1870 nz = (fNdetectors-1) - nz;
1871 }
1872 }
1873 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1874
1875
628e7bb0 1876 return np*fNdetectors + nz;
1877}
44347160 1878//------------------------------------------------------------------------
ae00569a 1879const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1880{
e43c066c 1881 //--------------------------------------------------------------------
1882 // This function returns clusters within the "window"
1883 //--------------------------------------------------------------------
1884
ae00569a 1885 if (fCurrentSlice<0) {
e43c066c 1886 Double_t rpi2 = 2.*fR*TMath::Pi();
1887 for (Int_t i=fI; i<fImax; i++) {
1888 Double_t y = fY[i];
1889 if (fYmax<y) y -= rpi2;
1d4090b7 1890 if (fYmin>y) y += rpi2;
e43c066c 1891 if (y<fYmin) continue;
1892 if (y>fYmax) continue;
1893 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1894 ci=i;
ae00569a 1895 if (!test) fI=i+1;
e43c066c 1896 return fClusters[i];
1897 }
ae00569a 1898 } else {
e43c066c 1899 for (Int_t i=fI; i<fImax; i++) {
1900 if (fYcs[i]<fYmin) continue;
1901 if (fYcs[i]>fYmax) continue;
1902 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1903 ci=fClusterIndexCs[i];
ae00569a 1904 if (!test) fI=i+1;
e43c066c 1905 return fClustersCs[i];
1906 }
1907 }
1908 return 0;
1909}
44347160 1910//------------------------------------------------------------------------
e43c066c 1911Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1912const {
1913 //--------------------------------------------------------------------
afd25725 1914 // This function returns the layer thickness at this point (units X0)
e43c066c 1915 //--------------------------------------------------------------------
1916 Double_t d=0.0085;
e50912db 1917 x0=AliITSRecoParam::GetX0Air();
e43c066c 1918 if (43<fR&&fR<45) { //SSD2
1919 Double_t dd=0.0034;
1920 d=dd;
1921 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1922 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1923 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1924 for (Int_t i=0; i<12; i++) {
1925 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1926 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1927 d+=0.0034;
1928 break;
1929 }
1930 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1931 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1932 d+=0.0034;
1933 break;
1934 }
1935 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1936 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1937 }
1938 } else
1939 if (37<fR&&fR<41) { //SSD1
1940 Double_t dd=0.0034;
1941 d=dd;
1942 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1943 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1944 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1945 for (Int_t i=0; i<11; i++) {
1946 if (TMath::Abs(z-3.9*i)<0.15) {
1947 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1948 d+=dd;
1949 break;
1950 }
1951 if (TMath::Abs(z+3.9*i)<0.15) {
1952 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1953 d+=dd;
1954 break;
1955 }
1956 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1957 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1958 }
1959 } else
1960 if (13<fR&&fR<26) { //SDD
1961 Double_t dd=0.0033;
1962 d=dd;
1963 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1964
1965 if (TMath::Abs(y-1.80)<0.55) {
1966 d+=0.016;
1967 for (Int_t j=0; j<20; j++) {
1968 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1969 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1970 }
1971 }
1972 if (TMath::Abs(y+1.80)<0.55) {
1973 d+=0.016;
1974 for (Int_t j=0; j<20; j++) {
1975 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1976 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
1977 }
1978 }
1979
1980 for (Int_t i=0; i<4; i++) {
1981 if (TMath::Abs(z-7.3*i)<0.60) {
1982 d+=dd;
1983 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1984 break;
1985 }
1986 if (TMath::Abs(z+7.3*i)<0.60) {
1987 d+=dd;
1988 if (TMath::Abs(y-0.00)>3.30) d+=dd;
1989 break;
1990 }
1991 }
1992 } else
1993 if (6<fR&&fR<8) { //SPD2
1994 Double_t dd=0.0063; x0=21.5;
1995 d=dd;
1996 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 1997 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 1998 } else
1999 if (3<fR&&fR<5) { //SPD1
2000 Double_t dd=0.0063; x0=21.5;
2001 d=dd;
2002 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2003 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2004 }
2005
2006 return d;
2007}
44347160 2008//------------------------------------------------------------------------
23197852 2009AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2010fR(det.fR),
1c97ce2f 2011fRmisal(det.fRmisal),
23197852 2012fPhi(det.fPhi),
2013fSinPhi(det.fSinPhi),
2014fCosPhi(det.fCosPhi),
2015fYmin(det.fYmin),
2016fYmax(det.fYmax),
2017fZmin(det.fZmin),
2018fZmax(det.fZmax),
2019fIsBad(det.fIsBad),
2020fNChips(det.fNChips),
2021fChipIsBad(det.fChipIsBad)
2022{
2023 //Copy constructor
2024}
2025//------------------------------------------------------------------------
2026void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2027 const AliITSDetTypeRec *detTypeRec)
23197852 2028{
2029 //--------------------------------------------------------------------
2030 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2031 //--------------------------------------------------------------------
2032
2033 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2034 // while in the tracker they start from 0 for each layer
2035 for(Int_t il=0; il<ilayer; il++)
2036 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2037
2038 Int_t detType;
2039 if (ilayer==0 || ilayer==1) { // ---------- SPD
2040 detType = 0;
2041 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2042 detType = 1;
2043 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2044 detType = 2;
2045 } else {
2046 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2047 return;
2048 }
2049
2050 // Get calibration from AliITSDetTypeRec
2051 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2052 calib->SetModuleIndex(idet);
23197852 2053 AliITSCalibration *calibSPDdead = 0;
2054 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2055 if (calib->IsBad() ||
2056 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2057 {
2058 SetBad();
359ac74d 2059 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2060 }
2061
2062 // Get segmentation from AliITSDetTypeRec
2063 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2064
2065 // Read info about bad chips
2066 fNChips = segm->GetMaximumChipIndex()+1;
2067 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2068 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2069 fChipIsBad = new Bool_t[fNChips];
2070 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2071 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2072 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2073 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2074 }
2075
2076 return;
2077}
2078//------------------------------------------------------------------------
e50912db 2079Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2080{
2081 //--------------------------------------------------------------------
afd25725 2082 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2083 //--------------------------------------------------------------------
e43c066c 2084
e50912db 2085 if(fUseTGeo!=0) {
2086 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2087 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2088 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2089 }
2090
afd25725 2091 // beam pipe
e50912db 2092 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2093 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2094
2095 // layers
2096 Double_t x0=0;
e43c066c 2097 Double_t xn=fgLayers[fI].GetR();
2098 for (Int_t i=0; i<fI; i++) {
2099 Double_t xi=fgLayers[i].GetR();
e50912db 2100 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2101 d+=dLayer*xi*xi;
e43c066c 2102 }
2103
afd25725 2104 // shields
e43c066c 2105 if (fI>1) {
e50912db 2106 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2107 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2108 }
e43c066c 2109 if (fI>3) {
e50912db 2110 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2111 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2112 }
e43c066c 2113 return d/(xn*xn);
2114}
44347160 2115//------------------------------------------------------------------------
e43c066c 2116Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2117 //-------------------------------------------------------------------
e43c066c 2118 // This function returns number of clusters within the "window"
2119 //--------------------------------------------------------------------
2120 Int_t ncl=0;
2121 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2122 const AliITSRecPoint *c=fClusters[i];
e43c066c 2123 if (c->GetZ() > fZmax) break;
2124 if (c->IsUsed()) continue;
2125 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2126 Double_t y=fR*det.GetPhi() + c->GetY();
2127
2128 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2129 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2130
2131 if (y<fYmin) continue;
2132 if (y>fYmax) continue;
2133 ncl++;
2134 }
2135 return ncl;
2136}
44347160 2137//------------------------------------------------------------------------
ae00569a 2138Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2139 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2140{
e43c066c 2141 //--------------------------------------------------------------------
ae00569a 2142 // This function refits the track "track" at the position "x" using
2143 // the clusters from "clusters"
ef7253ac 2144 // If "extra"==kTRUE,
ae00569a 2145 // the clusters from overlapped modules get attached to "track"
7167ae53 2146 // If "planeff"==kTRUE,
2147 // special approach for plane efficiency evaluation is applyed
e43c066c 2148 //--------------------------------------------------------------------
6518a6c5 2149
e50912db 2150 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2151 Int_t k;
e50912db 2152 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2153 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2154 for (k=0; k<nc; k++) {
ae00569a 2155 Int_t idx=clusters->GetClusterIndex(k);
2156 Int_t ilayer=(idx&0xf0000000)>>28;
2157 index[ilayer]=idx;
e43c066c 2158 }
67c1e979 2159
7167ae53 2160 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2161}
44347160 2162//------------------------------------------------------------------------
ae00569a 2163Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2164 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2165{
67c1e979 2166 //--------------------------------------------------------------------
ae00569a 2167 // This function refits the track "track" at the position "x" using
67c1e979 2168 // the clusters from array
ae00569a 2169 // If "extra"==kTRUE,
2170 // the clusters from overlapped modules get attached to "track"
7167ae53 2171 // If "planeff"==kTRUE,
2172 // special approach for plane efficiency evaluation is applyed
67c1e979 2173 //--------------------------------------------------------------------
e50912db 2174 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2175 Int_t k;
e50912db 2176 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2177 //
e50912db 2178 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2179 index[k]=clusters[k];
67c1e979 2180 }
2181
afd25725 2182 // special for cosmics: check which the innermost layer crossed
2183 // by the track
2184 Int_t innermostlayer=5;
ae00569a 2185 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2186 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2187 if(drphi < fgLayers[innermostlayer].GetR()) break;
2188 }
2189 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
afd25725 2190
ae00569a 2191 Int_t modstatus=1; // found
2192 Float_t xloc,zloc;
67c1e979 2193 Int_t from, to, step;
ae00569a 2194 if (xx > track->GetX()) {
e50912db 2195 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2196 step=+1;
2197 } else {
e50912db 2198 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2199 step=-1;
2200 }
ae00569a 2201 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2202
ae00569a 2203 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2204 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2205 Double_t r=layer.GetR();
afd25725 2206 if (step<0 && xx>r) break;
2207
2208 // material between SSD and SDD, SDD and SPD
6518a6c5 2209 Double_t hI=ilayer-0.5*step;
e50912db 2210 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2211 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2212 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2213 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2214
ae00569a 2215
afd25725 2216 Double_t oldGlobXYZ[3];
d1181f10 2217 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2218
8602c008 2219 Double_t phi,z;
ae00569a 2220 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2221
67c1e979 2222 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2223
2224 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2225 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2226 if (skip==2) {
ae00569a 2227 modstatus = 4; // out in z
d1181f10 2228 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2229 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2230 }
7131593b 2231 // cross layer
2232 // apply correction for material of the current layer
2233 // add time if going outward
2234 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2235 continue;
2236 }
2237
e50912db 2238 if (idet<0) return kFALSE;
ae00569a 2239
67c1e979 2240 const AliITSdetector &det=layer.GetDetector(idet);
1c97ce2f 2241 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2242
ae00569a 2243 track->SetDetectorIndex(idet);
d1181f10 2244 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2245
23197852 2246 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2247
2248 const AliITSRecPoint *clAcc=0;
44347160 2249 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2250
6518a6c5 2251 Int_t idx=index[ilayer];
ae00569a 2252 if (idx>=0) { // cluster in this layer
2253 modstatus = 6; // no refit
2254 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2255 if (cl) {
2256 if (idet != cl->GetDetectorIndex()) {
2257 idet=cl->GetDetectorIndex();
a5d0fae6 2258 const AliITSdetector &detc=layer.GetDetector(idet);
2259 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2260 track->SetDetectorIndex(idet);
d1181f10 2261 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2262 }
ae00569a 2263 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2264 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2265 if (chi2<maxchi2) {
2266 clAcc=cl;
2267 maxchi2=chi2;
2268 modstatus = 1; // found
2269 } else {
7167ae53 2270 return kFALSE; //
ae00569a 2271 }
2272 }
2273 } else { // no cluster in this layer
2274 if (skip==1) {
2275 modstatus = 3; // skipped
0ed58a47 2276 // Plane Eff determination:
2277 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2278 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2279 UseTrackForPlaneEff(track,ilayer);
7167ae53 2280 }
ae00569a 2281 } else {
2282 modstatus = 5; // no cls in road
2283 // check dead
1c97ce2f 2284 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2285 dz = 0.5*(zmax-zmin);
2286 dy = 0.5*(ymax-ymin);
2287 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2288 if (dead==1) modstatus = 7; // holes in z in SPD
23197852 2289 if (dead==2 || dead==3) modstatus = 2; // dead from OCDB
ae00569a 2290 }
e43c066c 2291 }
ae00569a 2292
2293 if (clAcc) {
2294 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2295 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2296 }
ae00569a 2297 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2298
2299
2300 if (extra) { // search for extra clusters in overlapped modules
2301 AliITStrackV2 tmp(*track);
1c97ce2f 2302 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2303 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2304
2305 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2306 Int_t idetExtra=-1;
a5d0fae6 2307 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2308 Double_t tolerance=0.1;
ae00569a 2309 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2310 // only clusters in another module! (overlaps)
2311 idetExtra = clExtra->GetDetectorIndex();
2312 if (idet == idetExtra) continue;
2313
a5d0fae6 2314 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2315
1c97ce2f 2316 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2317 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2318 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2319 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2320
2321 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2322 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2323 }
2324 if (cci>=0) {
2325 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2326 track->SetExtraModule(ilayer,idetExtra);
2327 }
2328 } // end search for extra clusters in overlapped modules
1c97ce2f 2329
afd25725 2330 // Correct for material of the current layer
7131593b 2331 // cross material
2332 // add time if going outward
ae00569a 2333 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
e43c066c 2334
ae00569a 2335 } // end loop on layers
2336
db355ee7 2337 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2338
e43c066c 2339 return kTRUE;
2340}
44347160 2341//------------------------------------------------------------------------
15dd636f 2342Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2343{
2344 //
2345 // calculate normalized chi2
2346 // return NormalizedChi2(track,0);
2347 Float_t chi2 = 0;
2348 Float_t sum=0;
2349 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2350 // track->fdEdxMismatch=0;
2351 Float_t dedxmismatch =0;
2352 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2353 if (mode<100){
2354 for (Int_t i = 0;i<6;i++){
9fd412a8 2355 if (track->GetClIndex(i)>=0){
e43c066c 2356 Float_t cerry, cerrz;
2357 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2358 else
b9671574 2359 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2360 cerry*=cerry;
2361 cerrz*=cerrz;
b9671574 2362 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2363 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2364 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2365 if (ratio<0.5) {
2366 cchi2+=(0.5-ratio)*10.;
2367 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2368 dedxmismatch+=(0.5-ratio)*10.;
2369 }
2370 }
2371 if (i<2 ||i>3){
b9671574 2372 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2373 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2374 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2375 if (i<2) chi2+=2*cl->GetDeltaProbability();
2376 }
2377 chi2+=cchi2;
2378 sum++;
2379 }
2380 }
b9671574 2381 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2382 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2383 }
2384 }
2385 else{
2386 for (Int_t i = 0;i<4;i++){
9fd412a8 2387 if (track->GetClIndex(i)>=0){
e43c066c 2388 Float_t cerry, cerrz;
2389 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2390 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2391 cerry*=cerry;
2392 cerrz*=cerrz;
b9671574 2393 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2394 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2395 sum++;
2396 }
2397 }
2398 for (Int_t i = 4;i<6;i++){
9fd412a8 2399 if (track->GetClIndex(i)>=0){
e43c066c 2400 Float_t cerry, cerrz;
2401 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2402 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2403 cerry*=cerry;
2404 cerrz*=cerrz;
2405 Float_t cerryb, cerrzb;
2406 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2407 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2408 cerryb*=cerryb;
2409 cerrzb*=cerrzb;
b9671574 2410 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2411 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2412 sum++;
2413 }
2414 }
2415 }
b9671574 2416 if (track->GetESDtrack()->GetTPCsignal()>85){
2417 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2418 if (ratio<0.5) {
2419 chi2+=(0.5-ratio)*5.;
2420 }
2421 if (ratio>2){
2422 chi2+=(ratio-2.0)*3;
2423 }
2424 }
2425 //
b9671574 2426 Double_t match = TMath::Sqrt(track->GetChi22());
2427 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2428 if (!track->GetConstrain()) {
2429 if (track->GetNumberOfClusters()>2) {
2430 match/=track->GetNumberOfClusters()-2.;
2431 } else {
2432 match=0;
2433 }
2434 }
e43c066c 2435 if (match<0) match=0;
b9671574 2436 Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
2437 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2438 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2439 1./(1.+track->GetNSkipped()));
e43c066c 2440
2441 return normchi2;
2442}
44347160 2443//------------------------------------------------------------------------
a70ed6ad 2444Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2445{
2446 //
2447 // return matching chi2 between two tracks
d1181f10 2448 Double_t largeChi2=1000.;
2449
15dd636f 2450 AliITStrackMI track3(*track2);
d1181f10 2451 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2452 TMatrixD vec(5,1);
6c94f330 2453 vec(0,0)=track1->GetY() - track3.GetY();
2454 vec(1,0)=track1->GetZ() - track3.GetZ();
2455 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2456 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2457 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2458 //
2459 TMatrixD cov(5,5);
6c94f330 2460 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2461 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2462 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2463 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2464 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2465
6c94f330 2466 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2467 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2468 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2469 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2470 //
6c94f330 2471 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2472 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2473 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2474 //
6c94f330 2475 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2476 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2477 //
6c94f330 2478 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2479
2480 cov.Invert();
2481 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2482 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2483 return chi2(0,0);
2484}
44347160 2485//------------------------------------------------------------------------
a70ed6ad 2486Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2487{
2488 //
afd25725 2489 // return probability that given point (characterized by z position and error)
2490 // is in SPD dead zone
e43c066c 2491 //
afd25725 2492 Double_t probability = 0.;
e43c066c 2493 Double_t absz = TMath::Abs(zpos);
afd25725 2494 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2495 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2496 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2497 Double_t zmin, zmax;
2498 if (zpos<-6.) { // dead zone at z = -7
e50912db 2499 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2500 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2501 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2502 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2503 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2504 } else if (absz<2.) { // dead zone at z = 0
e50912db 2505 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2506 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2507 } else {
2508 zmin = 0.;
2509 zmax = 0.;
e43c066c 2510 }
afd25725 2511 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2512 // dead zone)
2513 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2514 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2515 return probability;
2516}
44347160 2517//------------------------------------------------------------------------
a70ed6ad 2518Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2519{
2520 //
2521 // calculate normalized chi2
2522 Float_t chi2[6];
2523 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2524 Float_t ncl = 0;
2525 for (Int_t i = 0;i<6;i++){
b9671574 2526 if (TMath::Abs(track->GetDy(i))>0){
2527 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2528 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2529 ncl++;
2530 }
2531 else{chi2[i]=10000;}
2532 }
2533 Int_t index[6];
2534 TMath::Sort(6,chi2,index,kFALSE);
2535 Float_t max = float(ncl)*fac-1.;
2536 Float_t sumchi=0, sumweight=0;
2537 for (Int_t i=0;i<max+1;i++){
2538 Float_t weight = (i<max)?1.:(max+1.-i);
2539 sumchi+=weight*chi2[index[i]];
2540 sumweight+=weight;
2541 }
2542 Double_t normchi2 = sumchi/sumweight;
2543 return normchi2;
2544}
44347160 2545//------------------------------------------------------------------------
a70ed6ad 2546Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2547{
2548 //
2549 // calculate normalized chi2
2550 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2551 Int_t npoints = 0;
2552 Double_t res =0;
2553 for (Int_t i=0;i<6;i++){
b9671574 2554 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2555 Double_t sy1 = forwardtrack->GetSigmaY(i);
2556 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2557 Double_t sy2 = backtrack->GetSigmaY(i);
2558 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2559 if (i<2){ sy2=1000.;sz2=1000;}
2560 //
b9671574 2561 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2562 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2563 //
2564 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2565 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2566 //
2567 res+= nz0*nz0+ny0*ny0;
2568 npoints++;
2569 }
2570 if (npoints>1) return
6c23ffed 2571 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2572 //2*forwardtrack->fNUsed+
b9671574 2573 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2574 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2575 return 1000;
2576}
44347160 2577//------------------------------------------------------------------------
e43c066c 2578Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2579 //--------------------------------------------------------------------
2580 // Return pointer to a given cluster
2581 //--------------------------------------------------------------------
2582 Int_t l=(index & 0xf0000000) >> 28;
2583 Int_t c=(index & 0x0fffffff) >> 00;
2584 return fgLayers[l].GetWeight(c);
2585}
44347160 2586//------------------------------------------------------------------------
a70ed6ad 2587void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2588{
2589 //---------------------------------------------
2590 // register track to the list
628e7bb0 2591 //
b9671574 2592 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2593 //
2594 //
e43c066c 2595 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2596 Int_t index = track->GetClusterIndex(icluster);
2597 Int_t l=(index & 0xf0000000) >> 28;
2598 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2599 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2600 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2601 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2602 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2603 break;
2604 }
2605 }
2606 }
2607}
44347160 2608//------------------------------------------------------------------------
a70ed6ad 2609void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2610{
2611 //---------------------------------------------
2612 // unregister track from the list
2613 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2614 Int_t index = track->GetClusterIndex(icluster);
2615 Int_t l=(index & 0xf0000000) >> 28;
2616 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2617 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2618 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2619 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2620 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2621 }
2622 }
2623 }
2624}
44347160 2625//------------------------------------------------------------------------
00a7cc50 2626Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2627{
2628 //-------------------------------------------------------------
2629 //get number of shared clusters
2630 //-------------------------------------------------------------
2631 Float_t shared=0;
2632 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2633 // mean number of clusters
2634 Float_t *ny = GetNy(id), *nz = GetNz(id);
2635
2636
2637 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2638 Int_t index = track->GetClusterIndex(icluster);
2639 Int_t l=(index & 0xf0000000) >> 28;
2640 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2641 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2642 if (ny[l]==0){
2643 printf("problem\n");
2644 }
00a7cc50 2645 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2646 Float_t weight=1;
2647 //
2648 Float_t deltan = 0;
2649 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2650 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2651 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2652 if (l<2 || l>3){
2653 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2654 }
2655 else{
2656 deltan = (cl->GetNz()-nz[l]);
2657 }
2658 if (deltan>2.0) continue; // extended - highly probable shared cluster
2659 weight = 2./TMath::Max(3.+deltan,2.);
2660 //
2661 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2662 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2663 list[l]=index;
00a7cc50 2664 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2665 shared+=weight;
2666 break;
2667 }
2668 }
2669 }
b9671574 2670 track->SetNUsed(shared);
e43c066c 2671 return shared;
2672}
44347160 2673//------------------------------------------------------------------------
a70ed6ad 2674Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2675{
2676 //
2677 // find first shared track
2678 //
2679 // mean number of clusters
2680 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2681 //
2682 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2683 Int_t sharedtrack=100000;
2684 Int_t tracks[24],trackindex=0;
2685 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2686 //
2687 for (Int_t icluster=0;icluster<6;icluster++){
2688 if (clusterlist[icluster]<0) continue;
2689 Int_t index = clusterlist[icluster];
2690 Int_t l=(index & 0xf0000000) >> 28;
2691 Int_t c=(index & 0x0fffffff) >> 00;
2692 if (ny[l]==0){
2693 printf("problem\n");
2694 }
b9671574 2695 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2696 //if (l>3) continue;
00a7cc50 2697 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2698 //
2699 Float_t deltan = 0;
2700 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2701 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2702 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2703 if (l<2 || l>3){
2704 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2705 }
2706 else{
2707 deltan = (cl->GetNz()-nz[l]);
2708 }
2709 if (deltan>2.0) continue; // extended - highly probable shared cluster
2710 //
2711 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2712 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2713 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2714 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2715 trackindex++;
2716 }
2717 }
2718 }
2719 if (trackindex==0) return -1;
2720 if (trackindex==1){
2721 sharedtrack = tracks[0];
2722 }else{
2723 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2724 else{
2725 //
a5d0fae6 2726 Int_t tracks2[24], cluster[24];
2727 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2728 Int_t index =0;
2729 //
2730 for (Int_t i=0;i<trackindex;i++){
2731 if (tracks[i]<0) continue;
a5d0fae6 2732 tracks2[index] = tracks[i];
e43c066c 2733 cluster[index]++;
2734 for (Int_t j=i+1;j<trackindex;j++){
2735 if (tracks[j]<0) continue;
2736 if (tracks[j]==tracks[i]){
2737 cluster[index]++;
2738 tracks[j]=-1;
2739 }
2740 }
2741 index++;
2742 }
2743 Int_t max=0;
2744 for (Int_t i=0;i<index;i++){
2745 if (cluster[index]>max) {
a5d0fae6 2746 sharedtrack=tracks2[index];
e43c066c 2747 max=cluster[index];
2748 }
2749 }
2750 }
2751 }
2752
2753 if (sharedtrack>=100000) return -1;
2754 //
2755 // make list of overlaps
2756 shared =0;
2757 for (Int_t icluster=0;icluster<6;icluster++){
2758 if (clusterlist[icluster]<0) continue;
2759 Int_t index = clusterlist[icluster];
2760 Int_t l=(index & 0xf0000000) >> 28;
2761 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2762 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2763 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2764 if (l==0 || l==1){
2765 if (cl->GetNy()>2) continue;
2766 if (cl->GetNz()>2) continue;
2767 }
2768 if (l==4 || l==5){
2769 if (cl->GetNy()>3) continue;
2770 if (cl->GetNz()>3) continue;
2771 }
2772 //
2773 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2774 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2775 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2776 overlist[l]=index;
2777 shared++;
2778 }
2779 }
2780 }
2781 return sharedtrack;
2782}
44347160 2783//------------------------------------------------------------------------
15dd636f 2784AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2785 //
2786 // try to find track hypothesys without conflicts
2787 // with minimal chi2;
2788 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2789 Int_t entries1 = arr1->GetEntriesFast();
2790 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2791 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2792 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2793 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2794 //
15dd636f 2795 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2796 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2797 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2798
2799 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2800 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2801 UnRegisterClusterTracks(track,trackID1);
2802 }
2803 //
2804 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2805 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2806 UnRegisterClusterTracks(track,trackID2);
2807 }
2808 Int_t index1=0;
2809 Int_t index2=0;
2810 Float_t maxconflicts=6;
2811 Double_t maxchi2 =1000.;
2812 //
2813 // get weight of hypothesys - using best hypothesy
2814 Double_t w1,w2;
2815
2816 Int_t list1[6],list2[6];
00a7cc50 2817 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2818 RegisterClusterTracks(track10,trackID1);
2819 RegisterClusterTracks(track20,trackID2);
2820 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2821 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2822 UnRegisterClusterTracks(track10,trackID1);
2823 UnRegisterClusterTracks(track20,trackID2);
2824 //
2825 // normalized chi2
2826 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2827 Float_t nerry[6],nerrz[6];
2828 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2829 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2830 for (Int_t i=0;i<6;i++){
2831 if ( (erry1[i]>0) && (erry2[i]>0)) {
2832 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2833 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2834 }else{
2835 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2836 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2837 }
b9671574 2838 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2839 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2840 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2841 ncl1++;
2842 }
b9671574 2843 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2844 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2845 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2846 ncl2++;
2847 }
2848 }
2849 chi21/=ncl1;
2850 chi22/=ncl2;
2851 //
2852 //
b9671574 2853 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2854 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2855 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2856 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2857 //
2858 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2859 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2860 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2861 );
2862 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2863 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2864 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2865 );
2866
2867 Double_t sumw = w1+w2;
2868 w1/=sumw;
2869 w2/=sumw;
2870 if (w1<w2*0.5) {
2871 w1 = (d2+0.5)/(d1+d2+1.);
2872 w2 = (d1+0.5)/(d1+d2+1.);
2873 }
2874 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2875 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2876 //
2877 // get pair of "best" hypothesys
2878 //
2879 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2880 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2881
2882 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2883 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2884 //if (track1->fFakeRatio>0) continue;
2885 RegisterClusterTracks(track1,trackID1);
2886 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2887 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2888
2889 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2890 //if (track2->fFakeRatio>0) continue;
2891 Float_t nskipped=0;
2892 RegisterClusterTracks(track2,trackID2);
e43c066c 2893 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2894 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2895 UnRegisterClusterTracks(track2,trackID2);
2896 //
b9671574 2897 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2898 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 2899 if (nskipped>0.5) continue;
2900 //
2901 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2902 if (conflict1+1<cconflict1) continue;
2903 if (conflict2+1<cconflict2) continue;
2904 Float_t conflict=0;
2905 Float_t sumchi2=0;
2906 Float_t sum=0;
2907 for (Int_t i=0;i<6;i++){
2908 //
2909 Float_t c1 =0.; // conflict coeficients
2910 Float_t c2 =0.;
2911 if (clist1[i]&&clist2[i]){
2912 Float_t deltan = 0;
2913 if (i<2 || i>3){
2914 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2915 }
2916 else{
2917 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2918 }
2919 c1 = 2./TMath::Max(3.+deltan,2.);
2920 c2 = 2./TMath::Max(3.+deltan,2.);
2921 }
2922 else{
2923 if (clist1[i]){
2924 Float_t deltan = 0;
2925 if (i<2 || i>3){
2926 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
2927 }
2928 else{
2929 deltan = (clist1[i]->GetNz()-nz1[i]);
2930 }
2931 c1 = 2./TMath::Max(3.+deltan,2.);
2932 c2 = 0;
2933 }
2934
2935 if (clist2[i]){
2936 Float_t deltan = 0;
2937 if (i<2 || i>3){
2938 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
2939 }
2940 else{
2941 deltan = (clist2[i]->GetNz()-nz2[i]);
2942 }
2943 c2 = 2./TMath::Max(3.+deltan,2.);
2944 c1 = 0;
2945 }
2946 }
2947 //
a5d0fae6 2948 chi21=0;chi22=0;
b9671574 2949 if (TMath::Abs(track1->GetDy(i))>0.) {
2950 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
2951 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 2952 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 2953 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 2954 }else{
b9671574 2955 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 2956 }
2957 //
b9671574 2958 if (TMath::Abs(track2->GetDy(i))>0.) {
2959 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
2960 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 2961 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
2962 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
2963 }
2964 else{
b9671574 2965 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 2966 }
2967 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
2968 if (chi21>0) sum+=w1;
2969 if (chi22>0) sum+=w2;
2970 conflict+=(c1+c2);
2971 }
b9671574 2972 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
2973 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 2974 Double_t normchi2 = 2*conflict+sumchi2/sum;
2975 if ( normchi2 <maxchi2 ){
2976 index1 = itrack1;
2977 index2 = itrack2;
2978 maxconflicts = conflict;
2979 maxchi2 = normchi2;
2980 }
2981 }
2982 UnRegisterClusterTracks(track1,trackID1);
2983 }
2984 //
2985 // if (maxconflicts<4 && maxchi2<th0){
2986 if (maxchi2<th0*2.){
b9671574 2987 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 2988 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 2989 track1->SetChi2MIP(5,maxconflicts);
2990 track1->SetChi2MIP(6,maxchi2);
2991 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 2992 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 2993 track1->SetChi2MIP(8,index1);
e43c066c 2994 fBestTrackIndex[trackID1] =index1;
2995 UpdateESDtrack(track1, AliESDtrack::kITSin);
2996 }
b9671574 2997 else if (track10->GetChi2MIP(0)<th1){
2998 track10->SetChi2MIP(5,maxconflicts);
2999 track10->SetChi2MIP(6,maxchi2);
e43c066c 3000 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3001 UpdateESDtrack(track10,AliESDtrack::kITSin);
3002 }
3003
3004 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3005 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3006 UnRegisterClusterTracks(track,trackID1);
3007 }
3008 //
3009 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3010 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3011 UnRegisterClusterTracks(track,trackID2);
3012 }
3013
44347160 3014 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3015 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3016 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3017 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3018 RegisterClusterTracks(track10,trackID1);
3019 }
44347160 3020 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3021 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3022 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3023 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3024 RegisterClusterTracks(track20,trackID2);
3025 }
3026 return track10;
3027
3028}
44347160 3029//------------------------------------------------------------------------
e43c066c 3030void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3031 //--------------------------------------------------------------------
3032 // This function marks clusters assigned to the track
3033 //--------------------------------------------------------------------
3034 AliTracker::UseClusters(t,from);
3035
00a7cc50 3036 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3037 //if (c->GetQ()>2) c->Use();
3038 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3039 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3040 //if (c->GetQ()>2) c->Use();
3041 if (c->GetSigmaZ2()>0.1) c->Use();
3042
3043}
44347160 3044//------------------------------------------------------------------------
15dd636f 3045void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3046{
3047 //------------------------------------------------------------------
3048 // add track to the list of hypothesys
3049 //------------------------------------------------------------------
3050
fddf8459 3051 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3052 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3053 //
3054 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3055 if (!array) {
3056 array = new TObjArray(10);
3057 fTrackHypothesys.AddAt(array,esdindex);
3058 }
3059 array->AddLast(track);
3060}
44347160 3061//------------------------------------------------------------------------
e43c066c 3062void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3063{
3064 //-------------------------------------------------------------------
3065 // compress array of track hypothesys
3066 // keep only maxsize best hypothesys
3067 //-------------------------------------------------------------------
3068 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3069 if (! (fTrackHypothesys.At(esdindex)) ) return;
3070 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3071 Int_t entries = array->GetEntriesFast();
3072 //
3073 //- find preliminary besttrack as a reference
3074 Float_t minchi2=10000;
3075 Int_t maxn=0;
15dd636f 3076 AliITStrackMI * besttrack=0;
e43c066c 3077 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3078 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3079 if (!track) continue;
3080 Float_t chi2 = NormalizedChi2(track,0);
3081 //
b9671574 3082 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3083 track->SetLabel(tpcLabel);
3084 CookdEdx(track);
b9671574 3085 track->SetFakeRatio(1.);
e43c066c 3086 CookLabel(track,0.); //For comparison only
3087 //
44347160 3088 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3089 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3090 if (track->GetNumberOfClusters()<maxn) continue;
3091 maxn = track->GetNumberOfClusters();
3092 if (chi2<minchi2){
3093 minchi2=chi2;
3094 besttrack=track;
3095 }
3096 }
3097 else{
b9671574 3098 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3099 delete array->RemoveAt(itrack);
3100 }
e43c066c 3101 }
3102 }
3103 if (!besttrack) return;
3104 //
3105 //
3106 //take errors of best track as a reference
3107 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3108 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3109 for (Int_t j=0;j<6;j++) {
9fd412a8 3110 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3111 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3112 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3113 ny[j] = besttrack->GetNy(j);
3114 nz[j] = besttrack->GetNz(j);
e43c066c 3115 }
3116 }
3117 //
3118 // calculate normalized chi2
3119 //
3120 Float_t * chi2 = new Float_t[entries];
3121 Int_t * index = new Int_t[entries];
3122 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3123 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3124 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3125 if (track){
b9671574 3126 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3127 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3128 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3129 else{
b9671574 3130 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3131 delete array->RemoveAt(itrack);
3132 }
3133 }
e43c066c 3134 }
3135 }
3136 //
3137 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3138 besttrack = (AliITStrackMI*)array->At(index[0]);
44347160 3139 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3140 for (Int_t j=0;j<6;j++){
9fd412a8 3141 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3142 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3143 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3144 ny[j] = besttrack->GetNy(j);
3145 nz[j] = besttrack->GetNz(j);
e43c066c 3146 }
3147 }
3148 }
3149 //
3150 // calculate one more time with updated normalized errors
3151 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3152 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3153 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3154 if (track){
b9671574 3155 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
44347160 3156 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3157 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3158 else
3159 {
b9671574 3160 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3161 delete array->RemoveAt(itrack);
3162 }
3163 }
e43c066c 3164 }
3165 }
3166 entries = array->GetEntriesFast();
3167 //
628e7bb0 3168 //
e43c066c 3169 if (entries>0){
3170 TObjArray * newarray = new TObjArray();
3171 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3172 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3173 if (besttrack){
3174 //
a5d0fae6 3175 for (Int_t j=0;j<6;j++){
3176 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3177 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3178 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3179 ny[j] = besttrack->GetNy(j);
3180 nz[j] = besttrack->GetNz(j);
e43c066c 3181 }
3182 }
b9671574 3183 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3184 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3185 Float_t minn = besttrack->GetNumberOfClusters()-3;
3186 Int_t accepted=0;
3187 for (Int_t i=0;i<entries;i++){
15dd636f 3188 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3189 if (!track) continue;
3190 if (accepted>maxcut) break;
b9671574 3191 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3192 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3193 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3194 delete array->RemoveAt(index[i]);
3195 continue;
3196 }
e43c066c 3197 }
b9671574 3198 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3199 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3200 if (!shortbest) accepted++;
e43c066c 3201 //
3202 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3203 for (Int_t j=0;j<6;j++){
3204 if (nz[j]==0){
3205 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3206 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3207 ny[j] = track->GetNy(j);
3208 nz[j] = track->GetNz(j);
e43c066c 3209 }
3210 }
3211 }
3212 else{
3213 delete array->RemoveAt(index[i]);
3214 }
3215 }
3216 array->Delete();
3217 delete fTrackHypothesys.RemoveAt(esdindex);
3218 fTrackHypothesys.AddAt(newarray,esdindex);
3219 }
3220 else{
3221 array->Delete();
3222 delete fTrackHypothesys.RemoveAt(esdindex);
3223 }
3224 }
3225 delete [] chi2;
3226 delete [] index;
3227}
44347160 3228//------------------------------------------------------------------------
15dd636f 3229AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3230{
3231 //-------------------------------------------------------------
3232 // try to find best hypothesy
3233 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3234 //-------------------------------------------------------------
3235 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3236 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3237 if (!array) return 0;
3238 Int_t entries = array->GetEntriesFast();
3239 if (!entries) return 0;
3240 Float_t minchi2 = 100000;
15dd636f 3241 AliITStrackMI * besttrack=0;
e43c066c 3242 //
15dd636f 3243 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3244 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3245 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3246 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3247 //
3248 for (Int_t i=0;i<entries;i++){
15dd636f 3249 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3250 if (!track) continue;
628e7bb0 3251 Float_t sigmarfi,sigmaz;
3252 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3253 track->SetDnorm(0,sigmarfi);
3254 track->SetDnorm(1,sigmaz);
628e7bb0 3255 //
b9671574 3256 track->SetChi2MIP(1,1000000);
3257 track->SetChi2MIP(2,1000000);
3258 track->SetChi2MIP(3,1000000);
e43c066c 3259 //
3260 // backtrack
15dd636f 3261 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3262 if (track->GetConstrain()) {
e50912db 3263 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3264 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3265 backtrack->ResetCovariance(10.);
628e7bb0 3266 }else{
6c94f330 3267 backtrack->ResetCovariance(10.);
628e7bb0 3268 }
e43c066c 3269 backtrack->ResetClusters();
628e7bb0 3270
e43c066c 3271 Double_t x = original->GetX();
3272 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3273 //
b9671574 3274 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3275 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3276 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3277 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3278
b9671574 3279 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3280 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3281 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3282
3283
44347160 3284 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3285 //
3286 //forward track - without constraint
15dd636f 3287 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3288 forwardtrack->ResetClusters();
3289 x = track->GetX();
628e7bb0 3290 RefitAt(x,forwardtrack,track);
b9671574 3291 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3292 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3293 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3294
791f9a2a 3295 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3296 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3297 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3298 forwardtrack->SetD(0,track->GetD(0));
3299 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3300 {
3301 Int_t list[6];
00a7cc50 3302 AliITSRecPoint* clist[6];
b9671574 3303 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3304 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3305 }
3306
b9671574 3307 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3308 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3309 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3310 track->SetChi2MIP(3,1000);
e43c066c 3311 continue;
3312 }
b9671574 3313 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3314 //
3315 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3316 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3317 }
3318 if (chi2 < minchi2){
15dd636f 3319 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3320 besttrack = track;
e43c066c 3321 besttrack->SetLabel(track->GetLabel());
b9671574 3322 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3323 minchi2 = chi2;
791f9a2a 3324 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3325 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3326 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3327 }
3328 }
3329 delete backtrack;
3330 delete forwardtrack;
3331 Int_t accepted=0;
3332 for (Int_t i=0;i<entries;i++){
fddf8459 3333 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3334
e43c066c 3335 if (!track) continue;
628e7bb0 3336
44347160 3337 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3338 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3339 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3340 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3341 delete array->RemoveAt(i);
3342 continue;
3343 }
e43c066c 3344 }
3345 else{
3346 accepted++;
3347 }
3348 }
3349 //
3350 array->Compress();
3351 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3352
e43c066c 3353 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3354 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3355 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3356 if (!besttrack) return 0;
b9671574 3357 besttrack->SetChi2MIP(8,0);
e43c066c 3358 fBestTrackIndex[esdindex]=0;
3359 entries = array->GetEntriesFast();
15dd636f 3360 AliITStrackMI *longtrack =0;
e43c066c 3361 minchi2 =1000;
b9671574 3362 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3363 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3364 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3365 if (!track->GetConstrain()) continue;
3366 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3367 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3368 if (track->GetChi2MIP(0)>4.) continue;
3369 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3370 longtrack =track;
3371 }
3372 //if (longtrack) besttrack=longtrack;
3373
3374 Int_t list[6];
00a7cc50 3375 AliITSRecPoint * clist[6];
e43c066c 3376 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3377 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3378 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3379 RegisterClusterTracks(besttrack,esdindex);
3380 }
3381 //
3382 //
3383 if (shared>0.0){
3384 Int_t nshared;
3385 Int_t overlist[6];
3386 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3387 if (sharedtrack>=0){
3388 //
3389 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3390 if (besttrack){
3391 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3392 }
3393 else return 0;
3394 }
3395 }
3396
3397 if (shared>2.5) return 0;
3398 if (shared>1.0) return besttrack;
3399 //
628e7bb0 3400 // Don't sign clusters if not gold track
3401 //
3402 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3403 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3404 //
e43c066c 3405 if (fConstraint[fPass]){
3406 //
3407 // sign clusters
3408 //
3409 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3410 for (Int_t i=0;i<6;i++){
b9671574 3411 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3412 if (index<0) continue;
e43c066c 3413 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3414 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3415 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3416 if (!c) continue;
3417 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3418 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3419 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3420 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3421 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3422 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3423
3424 Bool_t cansign = kTRUE;
3425 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3426 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3427 if (!track) continue;
b9671574 3428 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3429 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3430 cansign = kFALSE;
3431 break;
3432 }
3433 }
3434 if (cansign){
b9671574 3435 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3436 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3437 if (!c->IsUsed()) c->Use();
3438 }
3439 }
3440 }
3441 return besttrack;
3442}
44347160 3443//------------------------------------------------------------------------
e43c066c 3444void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3445{
3446 //
3447 // get "best" hypothesys
628e7bb0 3448 //
e43c066c 3449
3450 Int_t nentries = itsTracks.GetEntriesFast();
3451 for (Int_t i=0;i<nentries;i++){
15dd636f 3452 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3453 if (!track) continue;
3454 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3455 if (!array) continue;
3456 if (array->GetEntriesFast()<=0) continue;
3457 //
15dd636f 3458 AliITStrackMI* longtrack=0;
e43c066c 3459 Float_t minn=0;
3460 Float_t maxchi2=1000;
3461 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3462 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3463 if (!trackHyp) continue;
3464 if (trackHyp->GetGoldV0()) {
3465 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3466 break;
3467 }
a5d0fae6 3468 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3469 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3470 if (fAfterV0){
a5d0fae6 3471 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3472 }
a5d0fae6 3473 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3474 //
3475 if (chi2 > maxchi2) continue;
a5d0fae6 3476 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3477 maxchi2 = chi2;
a5d0fae6 3478 longtrack=trackHyp;
e43c066c 3479 }
628e7bb0 3480 //
3481 //
3482 //
15dd636f 3483 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3484 if (!longtrack) {longtrack = besttrack;}
3485 else besttrack= longtrack;
628e7bb0 3486 //
afd25725 3487 if (besttrack) {
e43c066c 3488 Int_t list[6];
00a7cc50 3489 AliITSRecPoint * clist[6];
e43c066c 3490 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3491 //
b9671574 3492 track->SetNUsed(shared);
3493 track->SetNSkipped(besttrack->GetNSkipped());
3494 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3495 if (shared>0) {
3496 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3497 Int_t nshared;
3498 Int_t overlist[6];
3499 //
3500 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3501 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3502 if (sharedtrack>=0) {
e43c066c 3503 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3504 }
3505 }
afd25725 3506 if (besttrack&&fAfterV0) {
628e7bb0 3507 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3508 }
e43c066c 3509 if (besttrack&&fConstraint[fPass])
3510 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3511 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3512 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3513 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3514 }
3515
3516 }
3517 }
3518}
44347160 3519//------------------------------------------------------------------------
15dd636f 3520void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3521 //--------------------------------------------------------------------
3522 //This function "cooks" a track label. If label<0, this track is fake.
3523 //--------------------------------------------------------------------
3524 Int_t tpcLabel=-1;
3525
b9671574 3526 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3527
b9671574 3528 track->SetChi2MIP(9,0);
e43c066c 3529 Int_t nwrong=0;
3530 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3531 Int_t cindex = track->GetClusterIndex(i);
3532 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3533 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3534 Int_t isWrong=1;
3535 for (Int_t ind=0;ind<3;ind++){
3536 if (tpcLabel>0)
3537 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
9be1d1c7 3538 AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3539 }
b9671574 3540 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3541 nwrong+=isWrong;
3542 }
7d43b4c4 3543 Int_t nclusters = track->GetNumberOfClusters();
3544 if (nclusters > 0) //PH Some tracks don't have any cluster
3545 track->SetFakeRatio(double(nwrong)/double(nclusters));
e43c066c 3546 if (tpcLabel>0){
b9671574 3547 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
e43c066c 3548 else
b9671574 3549 track->SetLabel(tpcLabel);
e43c066c 3550 }
9be1d1c7 3551 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3552
3553}
44347160 3554//------------------------------------------------------------------------
15dd636f 3555void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
e43c066c 3556{
3557 //
b9671574 3558 track->SetChi2MIP(9,0);
e43c066c 3559 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3560 Int_t cindex = track->GetClusterIndex(i);
3561 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3562 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3563 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3564 Int_t isWrong=1;
3565 for (Int_t ind=0;ind<3;ind++){
3566 if (cl->GetLabel(ind)==lab) isWrong=0;
3567 }
b9671574 3568 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3569 }
e43c066c 3570 Double_t low=0.;
3571 Double_t up=0.51;
09cf9d66 3572 track->CookdEdx(low,up);
e43c066c 3573}
44347160 3574//------------------------------------------------------------------------
e50912db 3575void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3576 //
a70ed6ad 3577 // Create some arrays
e43c066c 3578 //
afd25725 3579 if (fCoefficients) delete []fCoefficients;
3580 fCoefficients = new Float_t[ntracks*48];
3581 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3582}
44347160 3583//------------------------------------------------------------------------
00a7cc50 3584Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3585{
3586 //
a70ed6ad 3587 // Compute predicted chi2
e43c066c 3588 //
3589 Float_t erry,errz;
3590 Float_t theta = track->GetTgl();
3591 Float_t phi = track->GetSnp();
60e55aee 3592 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
e50912db 3593 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz);
4187a601 3594 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 3595 // Take into account the mis-alignment (bring track to cluster plane)
3596 Double_t xTrOrig=track->GetX();
9be1d1c7 3597 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
4187a601 3598 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
e43c066c 3599 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz);
1c97ce2f 3600 // Bring the track back to detector plane in ideal geometry
3601 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3602 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3603 Float_t ny,nz;
e50912db 3604 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3605 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3606 if (delta>1){
3607 chi2+=0.5*TMath::Min(delta/2,2.);
3608 chi2+=2.*cluster->GetDeltaProbability();
3609 }
3610 //
b9671574 3611 track->SetNy(layer,ny);
3612 track->SetNz(layer,nz);
3613 track->SetSigmaY(layer,erry);
3614 track->SetSigmaZ(layer, errz);
e43c066c 3615 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3616 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3617 return chi2;
3618
3619}
e50912db 3620//------------------------------------------------------------------------
3621Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3622{
3623 //
a70ed6ad 3624 // Update ITS track
e43c066c 3625 //
3626 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3627 track->SetClIndex(layer, index);
572f41f9 3628 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3629 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3630 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3631 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3632 }
e43c066c 3633 }
a504d56f 3634
1f3e997f 3635 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
a504d56f 3636
afd25725 3637
1c97ce2f 3638 // Take into account the mis-alignment (bring track to cluster plane)
3639 Double_t xTrOrig=track->GetX();
4187a601 3640 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3641 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3642 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3643 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3644
9be1d1c7 3645 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
fddf8459 3646
1f3e997f 3647
150f264c 3648 AliCluster c(*cl);
3649 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3650 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3651
1c97ce2f 3652
3653 Int_t updated = track->UpdateMI(&c,chi2,index);
3654
3655 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3656 if (!track->Propagate(xTrOrig)) return 0;
1c97ce2f 3657
4187a601 3658 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3659 return updated;
e43c066c 3660}
150f264c 3661
44347160 3662//------------------------------------------------------------------------
a70ed6ad 3663void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3664{
3665 //
3666 //DCA sigmas parameterization
3667 //to be paramterized using external parameters in future
3668 //
3669 //
afd25725 3670 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3671 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3672}
e50912db 3673//------------------------------------------------------------------------
a70ed6ad 3674void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3675{
3676 //
a70ed6ad 3677 // Clusters from delta electrons?
e43c066c 3678 //
a70ed6ad 3679 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3680 if (entries<4) return;
a70ed6ad 3681 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3682 Int_t layer = cluster->GetLayer();
3683 if (layer>1) return;
3684 Int_t index[10000];
3685 Int_t ncandidates=0;
3686 Float_t r = (layer>0)? 7:4;
3687 //
3688 for (Int_t i=0;i<entries;i++){
a70ed6ad 3689 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3690 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3691 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3692 index[ncandidates] = i; //candidate to belong to delta electron track
3693 ncandidates++;
3694 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3695 cl0->SetDeltaProbability(1);
3696 }
3697 }
3698 //
3699 //
3700 //
3701 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3702 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3703 if (cl0->GetDeltaProbability()>0.8) continue;
3704 //
3705 Int_t ncl = 0;
3706 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3707 sumy=sumz=sumy2=sumyz=sumw=0.0;
3708 for (Int_t j=0;j<ncandidates;j++){
3709 if (i==j) continue;
a70ed6ad 3710 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3711 //
3712 Float_t dz = cl0->GetZ()-cl1->GetZ();
3713 Float_t dy = cl0->GetY()-cl1->GetY();
3714 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3715 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3716 y[ncl] = cl1->GetY();
3717 z[ncl] = cl1->GetZ();
3718 sumy+= y[ncl]*weight;
3719 sumz+= z[ncl]*weight;
3720 sumy2+=y[ncl]*y[ncl]*weight;
3721 sumyz+=y[ncl]*z[ncl]*weight;
3722 sumw+=weight;
3723 ncl++;
3724 }
3725 }
3726 if (ncl<4) continue;
3727 Float_t det = sumw*sumy2 - sumy*sumy;
3728 Float_t delta=1000;
3729 if (TMath::Abs(det)>0.01){
3730 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3731 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3732 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3733 }
3734 else{
3735 Float_t z0 = sumyz/sumy;
3736 delta = TMath::Abs(cl0->GetZ()-z0);
3737 }
3738 if ( delta<0.05) {
3739 cl0->SetDeltaProbability(1-20.*delta);
3740 }
3741 }
3742}
44347160 3743//------------------------------------------------------------------------
15dd636f 3744void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3745{
3746 //
a70ed6ad 3747 // Update ESD track
e43c066c 3748 //
3749 track->UpdateESDtrack(flags);
b9671574 3750 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3751 if (oldtrack) delete oldtrack;
b9671574 3752 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3753 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
628e7bb0 3754 printf("Problem\n");
3755 }
e43c066c 3756}
44347160 3757//------------------------------------------------------------------------
81e97e0d 3758Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3759 //
ae00569a 3760 // Get nearest upper layer close to the point xr.
81e97e0d 3761 // rough approximation
3762 //
bf6adc12 3763 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3764 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3765 Int_t res =6;
3766 for (Int_t i=0;i<6;i++){
bf6adc12 3767 if (radius<kRadiuses[i]){
81e97e0d 3768 res =i;
3769 break;
3770 }
3771 }
3772 return res;
3773}
44347160 3774//------------------------------------------------------------------------
e50912db 3775void AliITStrackerMI::BuildMaterialLUT(TString material) {
3776 //--------------------------------------------------------------------
3777 // Fill a look-up table with mean material
3778 //--------------------------------------------------------------------
3779
3780 Int_t n=1000;
3781 Double_t mparam[7];
3782 Double_t point1[3],point2[3];
3783 Double_t phi,cosphi,sinphi,z;
3784 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3785 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3786 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3787
3788 Int_t ifirst=0,ilast=0;
3789 if(material.Contains("Pipe")) {
3790 ifirst=6; ilast=6;
3791 } else if(material.Contains("Shields")) {
3792 ifirst=7; ilast=8;
3793 } else if(material.Contains("Layers")) {
3794 ifirst=0; ilast=5;
3795 } else {
3796 Error("BuildMaterialLUT","Wrong layer name\n");
3797 }
3798
3799 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3800 Double_t param[5]={0.,0.,0.,0.,0.};
3801 for (Int_t i=0; i<n; i++) {
3802 phi = 2.*TMath::Pi()*gRandom->Rndm();
3803 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3804 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3805 point1[0] = rmin[imat]*cosphi;
3806 point1[1] = rmin[imat]*sinphi;
3807 point1[2] = z;
3808 point2[0] = rmax[imat]*cosphi;
3809 point2[1] = rmax[imat]*sinphi;
3810 point2[2] = z;
3811 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3812 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3813 }
3814 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3815 if(imat<=5) {
3816 fxOverX0Layer[imat] = param[1];
3817 fxTimesRhoLayer[imat] = param[0]*param[4];
3818 } else if(imat==6) {
3819 fxOverX0Pipe = param[1];
3820 fxTimesRhoPipe = param[0]*param[4];
3821 } else if(imat==7) {
3822 fxOverX0Shield[0] = param[1];
3823 fxTimesRhoShield[0] = param[0]*param[4];
3824 } else if(imat==8) {
3825 fxOverX0Shield[1] = param[1];
3826 fxTimesRhoShield[1] = param[0]*param[4];
3827 }
3828 }
3829 /*
3830 printf("%s\n",material.Data());
3831 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3832 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3833 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3834 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3835 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3836 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3837 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3838 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3839 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3840 */
3841 return;
3842}
3843//------------------------------------------------------------------------
3844Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3845 TString direction) {
3846 //-------------------------------------------------------------------
3847 // Propagate beyond beam pipe and correct for material
3848 // (material budget in different ways according to fUseTGeo value)
7131593b 3849 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3850 //-------------------------------------------------------------------
3851
3852 // Define budget mode:
3853 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3854 // 1: material from TGeo in one step (on the fly)
e50912db 3855 // 2: material from lut
9be1d1c7 3856 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 3857 Int_t mode;
3858 switch(fUseTGeo) {
3859 case 0:
3860 mode=0;
3861 break;
3862 case 1:
3863 mode=1;
3864 break;
3865 case 2:
3866 mode=2;
3867 break;
3868 case 3:
3869 if(fTrackingPhase.Contains("Clusters2Tracks"))
3870 { mode=3; } else { mode=1; }
3871 break;
3872 case 4:
3873 if(fTrackingPhase.Contains("Clusters2Tracks"))
3874 { mode=3; } else { mode=2; }
3875 break;
3876 default:
3877 mode=0;
3878 break;
3879 }
3880 if(fTrackingPhase.Contains("Default")) mode=0;
3881
3882 Int_t index=fCurrentEsdTrack;
3883
3884 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
3885 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 3886 Double_t xToGo;
3887 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 3888
3889 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 3890
3891 switch(mode) {
3892 case 0:
3893 xOverX0 = AliITSRecoParam::GetdPipe();
3894 x0 = AliITSRecoParam::GetX0Be();
3895 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 3896 lengthTimesMeanDensity *= dir;
7131593b 3897 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3898 break;
3899 case 1:
3900 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 3901 break;
3902 case 2:
3903 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
3904 xOverX0 = fxOverX0Pipe;
3905 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 3906 lengthTimesMeanDensity *= dir;
7131593b 3907 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3908 break;
3909 case 3:
3910 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
3911 if(fxOverX0PipeTrks[index]<0) {
3912 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
3913 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 3914 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 3915 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
3916 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
3917 return 1;
3918 }
3919 xOverX0 = fxOverX0PipeTrks[index];
3920 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 3921 lengthTimesMeanDensity *= dir;
7131593b 3922 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3923 break;
3924 }
3925
e50912db 3926 return 1;
3927}
3928//------------------------------------------------------------------------
3929Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
3930 TString shield,
3931 TString direction) {
3932 //-------------------------------------------------------------------
3933 // Propagate beyond SPD or SDD shield and correct for material
3934 // (material budget in different ways according to fUseTGeo value)
7131593b 3935 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3936 //-------------------------------------------------------------------
3937
3938 // Define budget mode:
3939 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3940 // 1: material from TGeo in steps of X cm (on the fly)
3941 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 3942 // 2: material from lut
9be1d1c7 3943 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 3944 Int_t mode;
3945 switch(fUseTGeo) {
3946 case 0:
3947 mode=0;
3948 break;
3949 case 1:
3950 mode=1;
3951 break;
3952 case 2:
3953 mode=2;
3954 break;
3955 case 3:
3956 if(fTrackingPhase.Contains("Clusters2Tracks"))
3957 { mode=3; } else { mode=1; }
3958 break;
3959 case 4:
3960 if(fTrackingPhase.Contains("Clusters2Tracks"))
3961 { mode=3; } else { mode=2; }
3962 break;
3963 default:
3964 mode=0;
3965 break;
3966 }
3967 if(fTrackingPhase.Contains("Default")) mode=0;
3968
3969 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
3970 Double_t rToGo;
3971 Int_t shieldindex=0;
3972 if (shield.Contains("SDD")) { // SDDouter
3973 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
3974 shieldindex=1;
3975 } else if (shield.Contains("SPD")) { // SPDouter
3976 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
3977 shieldindex=0;
3978 } else {
3979 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 3980 return 0;
3981 }
70e83b26 3982 Double_t xToGo;
3983 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 3984
3985 Int_t index=2*fCurrentEsdTrack+shieldindex;
3986
3987 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 3988 Int_t nsteps=1;
e50912db 3989
3990 switch(mode) {
3991 case 0:
3992 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
3993 x0 = AliITSRecoParam::GetX0shield(shieldindex);
3994 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 3995 lengthTimesMeanDensity *= dir;
7131593b 3996 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 3997 break;
3998 case 1:
9be1d1c7 3999 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4000 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4001 break;
4002 case 2:
4003 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4004 xOverX0 = fxOverX0Shield[shieldindex];
4005 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4006 lengthTimesMeanDensity *= dir;
7131593b 4007 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4008 break;
4009 case 3:
4010 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4011 if(fxOverX0ShieldTrks[index]<0) {
4012 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4013 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4014 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4015 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4016 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4017 return 1;
4018 }
4019 xOverX0 = fxOverX0ShieldTrks[index];
4020 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4021 lengthTimesMeanDensity *= dir;
7131593b 4022 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4023 break;
4024 }
4025
e50912db 4026 return 1;
4027}
4028//------------------------------------------------------------------------
4029Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4030 Int_t layerindex,
4031 Double_t oldGlobXYZ[3],
4032 TString direction) {
4033 //-------------------------------------------------------------------
4034 // Propagate beyond layer and correct for material
4035 // (material budget in different ways according to fUseTGeo value)
7131593b 4036 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4037 //-------------------------------------------------------------------
4038
4039 // Define budget mode:
4040 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4041 // 1: material from TGeo in stepsof X cm (on the fly)
4042 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4043 // 2: material from lut
9be1d1c7 4044 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4045 Int_t mode;
4046 switch(fUseTGeo) {
4047 case 0:
4048 mode=0;
4049 break;
4050 case 1:
4051 mode=1;
4052 break;
4053 case 2:
4054 mode=2;
4055 break;
4056 case 3:
4057 if(fTrackingPhase.Contains("Clusters2Tracks"))
4058 { mode=3; } else { mode=1; }
4059 break;
4060 case 4:
4061 if(fTrackingPhase.Contains("Clusters2Tracks"))
4062 { mode=3; } else { mode=2; }
4063 break;
4064 default:
4065 mode=0;
4066 break;
4067 }
4068 if(fTrackingPhase.Contains("Default")) mode=0;
4069
4070 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4071
4072 Double_t r=fgLayers[layerindex].GetR();
4073 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4074
4075 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4076 Double_t xToGo;
4077 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4078
4079 Int_t index=6*fCurrentEsdTrack+layerindex;
4080
e50912db 4081
4082 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4083 Int_t nsteps=1;
7131593b 4084
4085 // back before material (no correction)
d634c32b 4086 Double_t rOld,xOld;
7131593b 4087 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4088 if (!t->GetLocalXat(rOld,xOld)) return 0;
4089 if (!t->Propagate(xOld)) return 0;
e50912db 4090
4091 switch(mode) {
4092 case 0:
4093 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4094 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4095 lengthTimesMeanDensity *= dir;
7131593b 4096 // Bring the track beyond the material
4097 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4098 break;
4099 case 1:
9be1d1c7 4100 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4101 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4102 break;
4103 case 2:
4104 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4105 xOverX0 = fxOverX0Layer[layerindex];
4106 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4107 lengthTimesMeanDensity *= dir;
7131593b 4108 // Bring the track beyond the material
4109 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4110 break;
4111 case 3:
4112 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4113 if(fxOverX0LayerTrks[index]<0) {
4114 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4115 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4116 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4117 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4118 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4119 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4120 return 1;
e50912db 4121 }
4122 xOverX0 = fxOverX0LayerTrks[index];
4123 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4124 lengthTimesMeanDensity *= dir;
7131593b 4125 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4126 break;
4127 }
4128
7131593b 4129
e50912db 4130 return 1;
4131}
4132//------------------------------------------------------------------------
4133void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4134 //-----------------------------------------------------------------
4135 // Initialize LUT for storing material for each prolonged track
4136 //-----------------------------------------------------------------
4137 fxOverX0PipeTrks = new Float_t[ntracks];
4138 fxTimesRhoPipeTrks = new Float_t[ntracks];
4139 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4140 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4141 fxOverX0LayerTrks = new Float_t[ntracks*6];
4142 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4143
4144 for(Int_t i=0; i<ntracks; i++) {
4145 fxOverX0PipeTrks[i] = -1.;
4146 fxTimesRhoPipeTrks[i] = -1.;
4147 }
4148 for(Int_t j=0; j<ntracks*2; j++) {
4149 fxOverX0ShieldTrks[j] = -1.;
4150 fxTimesRhoShieldTrks[j] = -1.;
4151 }
4152 for(Int_t k=0; k<ntracks*6; k++) {
4153 fxOverX0LayerTrks[k] = -1.;
4154 fxTimesRhoLayerTrks[k] = -1.;
4155 }
4156
4157 fNtracks = ntracks;
4158
4159 return;
4160}
4161//------------------------------------------------------------------------
4162void AliITStrackerMI::DeleteTrksMaterialLUT() {
4163 //-----------------------------------------------------------------
4164 // Delete LUT for storing material for each prolonged track
4165 //-----------------------------------------------------------------
4166 if(fxOverX0PipeTrks) {
4167 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4168 }
4169 if(fxOverX0ShieldTrks) {
4170 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4171 }
4172
4173 if(fxOverX0LayerTrks) {
4174 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4175 }
4176 if(fxTimesRhoPipeTrks) {
4177 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4178 }
4179 if(fxTimesRhoShieldTrks) {
4180 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4181 }
4182 if(fxTimesRhoLayerTrks) {
4183 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4184 }
4185 return;
4186}
4187//------------------------------------------------------------------------
a70ed6ad 4188Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4189 Int_t ilayer,Int_t idet) const {
2755f080 4190 //-----------------------------------------------------------------
4191 // This method is used to decide whether to allow a prolongation
4192 // without clusters, because we want to skip the layer.
4193 // In this case the return value is > 0:
4194 // return 1: the user requested to skip a layer
4195 // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
4196 //-----------------------------------------------------------------
e43c066c 4197
2755f080 4198 if (AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) return 1;
51ad6848 4199
2755f080 4200 if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4201 // check if track will cross SPD outer layer
4202 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4203 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4204 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4205 }
4206 }
51ad6848 4207
2755f080 4208 return 0;
4209}
4210//------------------------------------------------------------------------
23197852 4211Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4212 Int_t ilayer,Int_t idet,
1c97ce2f 4213 Double_t dz,Double_t dy,
23197852 4214 Bool_t noClusters) const {
6518a6c5 4215 //-----------------------------------------------------------------
4216 // This method is used to decide whether to allow a prolongation
ae00569a 4217 // without clusters, because there is a dead zone in the road.
6518a6c5 4218 // In this case the return value is > 0:
4219 // return 1: dead zone at z=0,+-7cm in SPD
23197852 4220 // return 2: all road is "bad" (dead or noisy) from the OCDB
4221 // return 3: something "bad" (dead or noisy) from the OCDB
6518a6c5 4222 //-----------------------------------------------------------------
4223
4224 // check dead zones at z=0,+-7cm in the SPD
4225 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4226 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4227 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4228 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4229 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4230 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4231 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4232 for (Int_t i=0; i<3; i++)
4187a601 4233 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4234 AliDebug(2,Form("crack SPD %d",ilayer));
4235 return 1;
4236 }
6518a6c5 4237 }
4238
23197852 4239 // check bad zones from OCDB
4240 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4241
23197852 4242 if (idet<0) return 0;
ae00569a 4243
23197852 4244 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4245
23197852 4246 Int_t detType=-1;
4247 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4248 if (ilayer==0 || ilayer==1) { // ---------- SPD
4249 detType = 0;
4250 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4251 detType = 1;
4252 detSizeFactorX *= 2.;
4253 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4254 detType = 2;
4255 }
a70ed6ad 4256 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4257 if (detType==2) segm->SetLayer(ilayer+1);
4258 Float_t detSizeX = detSizeFactorX*segm->Dx();
4259 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4260
4261 // check if the road overlaps with bad chips
4262 Float_t xloc,zloc;
4187a601 4263 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4264 Float_t zlocmin = zloc-dz;
4265 Float_t zlocmax = zloc+dz;
4266 Float_t xlocmin = xloc-dy;
4267 Float_t xlocmax = xloc+dy;
23197852 4268 Int_t chipsInRoad[100];
4269
4187a601 4270 // check if road goes out of detector
4271 Bool_t touchNeighbourDet=kFALSE;
4272 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.5*detSizeX; touchNeighbourDet=kTRUE;}
4273 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.5*detSizeX; touchNeighbourDet=kTRUE;}
4274 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4275 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4276 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));
4277
4278 // check if this detector is bad
4279 if (det.IsBad()) {
4280 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4281 if(!touchNeighbourDet) {
4282 return 2; // all detectors in road are bad
4283 } else {
4284 return 3; // at least one is bad
4285 }
4286 }
4287
23197852 4288 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4289 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4290 if (!nChipsInRoad) return 0;
4291
4292 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4293 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4294 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4295 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4296 if (det.IsChipBad(chipsInRoad[iCh])) {
4297 anyBad=kTRUE;
4298 } else {
4299 anyGood=kTRUE;
4300 }
6518a6c5 4301 }
4302
4187a601 4303 if (!anyGood) {
4304 if(!touchNeighbourDet) {
4305 AliDebug(2,"all bad in road");
4306 return 2; // all chips in road are bad
4307 } else {
4308 return 3; // at least a bad chip in road
4309 }
4310 }
23197852 4311
4187a601 4312 if (anyBad) {
4313 AliDebug(2,"at least a bad in road");
4314 return 3; // at least a bad chip in road
4315 }
23197852 4316
4317
4318 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
4319 || ilayer==4 || ilayer==5 // SSD
4320 || !noClusters) return 0;
4321
4322 // There are no clusters in road: check if there is at least
4323 // a bad SPD pixel or SDD anode
4324
4187a601 4325 Int_t idetInITS=idet;
4326 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4327
4187a601 4328 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4329 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
4330 return 3;
4331 }
4332 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4333
6518a6c5 4334 return 0;
4335}
4336//------------------------------------------------------------------------
ae00569a 4337Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4338 const AliITStrackMI *track,
ae00569a 4339 Float_t &xloc,Float_t &zloc) const {
4340 //-----------------------------------------------------------------
4341 // Gives position of track in local module ref. frame
4342 //-----------------------------------------------------------------
4343
4344 xloc=0.;
4345 zloc=0.;
4346
4347 if(idet<0) return kFALSE;
4348
4349 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4350
4351 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4352
ae00569a 4353 Int_t det = idet - (lad-1)*ndet + 1;
4354
4355 Double_t xyzGlob[3],xyzLoc[3];
4356
1c97ce2f 4357 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4358 // take into account the misalignment: xyz at real detector plane
d1181f10 4359 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4360
d1181f10 4361 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4362
4363 xloc = (Float_t)xyzLoc[0];
4364 zloc = (Float_t)xyzLoc[2];
4365
4366 return kTRUE;
4367}
4368//------------------------------------------------------------------------
a70ed6ad 4369Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4370//
4371// Method to be optimized further:
4372// Aim: decide whether a track can be used for PlaneEff evaluation
4373// the decision is taken based on the track quality at the layer under study
4374// no information on the clusters on this layer has to be used
4375// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4376// the cut is done on number of sigmas from the boundaries
4377//
4378// Input: Actual track, layer [0,5] under study
4379// Output: none
4380// Return: kTRUE if this is a good track
7167ae53 4381//
4382// it will apply a pre-selection to obtain good quality tracks.
4383// Here also you will have the possibility to put a control on the
4384// impact point of the track on the basic block, in order to exclude border regions
4385// this will be done by calling a proper method of the AliITSPlaneEff class.
4386//
4387// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4388// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4389//
4390 Int_t index[AliITSgeomTGeo::kNLayers];
4391 Int_t k;
4392 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4393 //
4394 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4395 index[k]=clusters[k];
4396 }
4397
0e91092f 4398 if(!fPlaneEff)
a31a139f 4399 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4400 AliITSlayer &layer=fgLayers[ilayer];
4401 Double_t r=layer.GetR();
8a32c4b5 4402 AliITStrackMI tmp(*track);
4403
0ed58a47 4404// require a minimal number of cluster in other layers and eventually clusters in closest layers
4405 Int_t ncl=0;
4406 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
4407 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4408 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
9fd412a8 4409 if (tmp.GetClIndex(lay)>=0) ncl++;
0ed58a47 4410 }
4411 Bool_t nextout = kFALSE;
4412 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4413 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4414 Bool_t nextin = kFALSE;
4415 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4416 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4417 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4418 return kFALSE;
4419 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4420 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4421 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4422 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4423
8a32c4b5 4424// detector number
4425 Double_t phi,z;
4426 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4427 Int_t idet=layer.FindDetectorIndex(phi,z);
4428 if(idet<0) { AliInfo(Form("cannot find detector"));
4429 return kFALSE;}
4430
4431 // here check if it has good Chi Square.
4432
4433 //propagate to the intersection with the detector plane
4434 const AliITSdetector &det=layer.GetDetector(idet);
4435 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4436
4437 Float_t locx; //
4438 Float_t locz; //
0e91092f 4439 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4440 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4441 if(key>fPlaneEff->Nblock()) return kFALSE;
4442 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4443 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4444 //***************
0e91092f 4445 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4446 //
4447 //For the time being they are hard-wired, later on from AliITSRecoParam
0e91092f 4448 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
4449 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
4450 Double_t nsigz=4;
4451 Double_t nsigx=4;
4452 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4453 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4454 // done for RecPoints
8a32c4b5 4455
1c97ce2f 4456 // exclude tracks at boundary between detectors
0e91092f 4457 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4458 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4459 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4460 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4461 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 4462
0e91092f 4463 if ( (locx-dx < blockXmn+boundaryWidth) ||
4464 (locx+dx > blockXmx-boundaryWidth) ||
4465 (locz-dz < blockZmn+boundaryWidth) ||
4466 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4467 return kTRUE;
7167ae53 4468}
4469//------------------------------------------------------------------------
a70ed6ad 4470void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4471//
4472// This Method has to be optimized! For the time-being it uses the same criteria
4473// as those used in the search of extra clusters for overlapping modules.
4474//
4475// Method Purpose: estabilish whether a track has produced a recpoint or not
4476// in the layer under study (For Plane efficiency)
4477//
4478// inputs: AliITStrackMI* track (pointer to a usable track)
4479// outputs: none
4480// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4481// traversed by this very track. In details:
4482// - if a cluster can be associated to the track then call
4483// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4484// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4485//
a31a139f 4486 if(!fPlaneEff)
4487 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4488 AliITSlayer &layer=fgLayers[ilayer];
4489 Double_t r=layer.GetR();
7167ae53 4490 AliITStrackMI tmp(*track);
4491
4492// detector number
4493 Double_t phi,z;
4494 if (!tmp.GetPhiZat(r,phi,z)) return;
4495 Int_t idet=layer.FindDetectorIndex(phi,z);
4496
8a32c4b5 4497 if(idet<0) { AliInfo(Form("cannot find detector"));
4498 return;}
7167ae53 4499
7167ae53 4500
0e91092f 4501//propagate to the intersection with the detector plane
7167ae53 4502 const AliITSdetector &det=layer.GetDetector(idet);
4503 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4504
1c97ce2f 4505
0e91092f 4506//***************
4507// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4508//
4509 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4510 TMath::Sqrt(tmp.GetSigmaZ2() +
4511 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4512 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4513 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4514 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4515 TMath::Sqrt(tmp.GetSigmaY2() +
4516 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4517 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4518 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4519
4520// road in global (rphi,z) [i.e. in tracking ref. system]
4521 Double_t zmin = tmp.GetZ() - dz;
4522 Double_t zmax = tmp.GetZ() + dz;
4523 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4524 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4525
4526// select clusters in road
7167ae53 4527 layer.SelectClusters(zmin,zmax,ymin,ymax);
4528
0e91092f 4529// Define criteria for track-cluster association
7167ae53 4530 Double_t msz = tmp.GetSigmaZ2() +
4531 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4532 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4533 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4534 Double_t msy = tmp.GetSigmaY2() +
4535 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4536 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4537 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4538 if (tmp.GetConstrain()) {
7167ae53 4539 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4540 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4541 } else {
4542 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4543 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4544 }
7167ae53 4545 msz = 1./msz; // 1/RoadZ^2
4546 msy = 1./msy; // 1/RoadY^2
0e91092f 4547//
7167ae53 4548
4549 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4550 Int_t idetc=-1;
8a32c4b5 4551 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4552 //Double_t tolerance=0.2;
4553 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4554 idetc = cl->GetDetectorIndex();
4555 if(idet!=idetc) continue;
4556 //Int_t ilay = cl->GetLayer();
4557
4558 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4559 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4560
4561 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4562 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4563 }*/
4564 Float_t locx; //
4565 Float_t locz; //
0e91092f 4566 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4567//
4568 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4569 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4570 if(key>fPlaneEff->Nblock()) return;
4571 Bool_t found=kFALSE;
8a32c4b5 4572 //if (ci>=0) {
1cc5cedc 4573 Double_t chi2;
8a32c4b5 4574 while ((cl=layer.GetNextCluster(clidx))!=0) {
4575 idetc = cl->GetDetectorIndex();
4576 if(idet!=idetc) continue;
4577 // here real control to see whether the cluster can be associated to the track.
4578 // cluster not associated to track
4579 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4580 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4581 // calculate track-clusters chi2
1cc5cedc 4582 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4583 // in particular, the error associated to the cluster
8a32c4b5 4584 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4585 // chi2 cut
4586 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4587 found=kTRUE;
8a32c4b5 4588 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4589 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4590 // track->SetExtraModule(ilayer,idetExtra);
4591 }
4592 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4593 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4594 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4595 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4596 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4597 Int_t cltype[2]={-999,-999};
0e91092f 4598
4599 tr[0]=locx;
4600 tr[1]=locz;
4601 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4602 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4603
3ebe30ad 4604 if (found){
4605 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4606 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4607 cltype[0]=layer.GetCluster(ci)->GetNy();
4608 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4609
4610 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4611 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4612 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4613 // It is computed properly by calling the method
4614 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4615 // T
4616 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4617 //if (tmp.PropagateTo(x,0.,0.)) {
4618 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4619 AliCluster c(*layer.GetCluster(ci));
4620 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4621 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4622 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4623 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4624 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4625 //}
3ebe30ad 4626 }
4627 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 4628 }
7167ae53 4629return;
4630}