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//-----------------------------------------------------------------
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
bf6adc12 35
4187a601 36#include "AliLog.h"
88e3c173 37#include "AliGeomManager.h"
a70ed6ad 38#include "AliITSPlaneEff.h"
a70ed6ad 39#include "AliTrackPointArray.h"
af885e0f 40#include "AliESDEvent.h"
aad72f45 41#include "AliESDtrack.h"
6c94f330 42#include "AliV0.h"
a70ed6ad 43#include "AliITSChannelStatus.h"
44#include "AliITSDetTypeRec.h"
00a7cc50 45#include "AliITSRecPoint.h"
2b295109 46#include "AliITSRecPointContainer.h"
e341247d 47#include "AliITSgeomTGeo.h"
44347160 48#include "AliITSReconstructor.h"
572f41f9 49#include "AliITSClusterParam.h"
23197852 50#include "AliITSsegmentation.h"
51#include "AliITSCalibration.h"
7167ae53 52#include "AliITSPlaneEffSPD.h"
53#include "AliITSPlaneEffSDD.h"
54#include "AliITSPlaneEffSSD.h"
44396017 55#include "AliITSV0Finder.h"
ae00569a 56#include "AliITStrackerMI.h"
bb7e41dd 57#include "AliMathBase.h"
e43c066c 58
59ClassImp(AliITStrackerMI)
e43c066c 60
e50912db 61AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 62
8221b41b 63AliITStrackerMI::AliITStrackerMI():AliTracker(),
64fI(0),
65fBestTrack(),
66fTrackToFollow(),
67fTrackHypothesys(),
68fBestHypothesys(),
69fOriginal(),
70fCurrentEsdTrack(),
71fPass(0),
72fAfterV0(kFALSE),
73fLastLayerToTrackTo(0),
afd25725 74fCoefficients(0),
8221b41b 75fEsd(0),
e50912db 76fTrackingPhase("Default"),
6518a6c5 77fUseTGeo(3),
e50912db 78fNtracks(0),
79fxOverX0Pipe(-1.),
80fxTimesRhoPipe(-1.),
81fxOverX0PipeTrks(0),
82fxTimesRhoPipeTrks(0),
83fxOverX0ShieldTrks(0),
84fxTimesRhoShieldTrks(0),
85fxOverX0LayerTrks(0),
86fxTimesRhoLayerTrks(0),
4a66240a 87fDebugStreamer(0),
23197852 88fITSChannelStatus(0),
a70ed6ad 89fkDetTypeRec(0),
ae00569a 90fPlaneEff(0) {
8221b41b 91 //Default constructor
e50912db 92 Int_t i;
93 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
94 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
95 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 96}
44347160 97//------------------------------------------------------------------------
1f3e997f 98AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 99fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 100fBestTrack(),
101fTrackToFollow(),
102fTrackHypothesys(),
103fBestHypothesys(),
104fOriginal(),
105fCurrentEsdTrack(),
106fPass(0),
107fAfterV0(kFALSE),
e50912db 108fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 109fCoefficients(0),
8221b41b 110fEsd(0),
e50912db 111fTrackingPhase("Default"),
6518a6c5 112fUseTGeo(3),
e50912db 113fNtracks(0),
114fxOverX0Pipe(-1.),
115fxTimesRhoPipe(-1.),
116fxOverX0PipeTrks(0),
117fxTimesRhoPipeTrks(0),
118fxOverX0ShieldTrks(0),
119fxTimesRhoShieldTrks(0),
120fxOverX0LayerTrks(0),
121fxTimesRhoLayerTrks(0),
4a66240a 122fDebugStreamer(0),
23197852 123fITSChannelStatus(0),
a70ed6ad 124fkDetTypeRec(0),
ae00569a 125fPlaneEff(0) {
e43c066c 126 //--------------------------------------------------------------------
127 //This is the AliITStrackerMI constructor
128 //--------------------------------------------------------------------
e341247d 129 if (geom) {
130 AliWarning("\"geom\" is actually a dummy argument !");
131 }
132
afd25725 133 fCoefficients = 0;
628e7bb0 134 fAfterV0 = kFALSE;
e341247d 135
e50912db 136 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 137 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
138 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
139
140 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
bf1cd124 141 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
e43c066c 142 Double_t poff=TMath::ATan2(y,x);
143 Double_t zoff=z;
bf1cd124 144
145 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e341247d 146 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 147
e341247d 148 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 149 r += TMath::Sqrt(x*x + y*y);
e341247d 150 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 151 r += TMath::Sqrt(x*x + y*y);
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
154 r*=0.25;
155
156 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
157
158 for (Int_t j=1; j<nlad+1; j++) {
159 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 160 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 161 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
162 m.Multiply(tm);
a5d0fae6 163 Double_t txyz[3]={0.};
164 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 165 m.LocalToMaster(txyz,xyz);
a5d0fae6 166 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 167 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 168
169 if (phi<0) phi+=TMath::TwoPi();
170 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
171
e43c066c 172 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
173 new(&det) AliITSdetector(r,phi);
1c97ce2f 174 // compute the real radius (with misalignment)
175 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
176 mmisal.Multiply(tm);
177 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
178 mmisal.LocalToMaster(txyz,xyz);
179 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
180 det.SetRmisal(rmisal);
181
23197852 182 } // end loop on detectors
183 } // end loop on ladders
4fa7f7d1 184 fForceSkippingOfLayer[i] = 0;
23197852 185 } // end loop on layers
e43c066c 186
e43c066c 187
e50912db 188 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 189
190 fPass=0;
191 fConstraint[0]=1; fConstraint[1]=0;
192
afd25725 193 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
194 AliITSReconstructor::GetRecoParam()->GetYVdef(),
195 AliITSReconstructor::GetRecoParam()->GetZVdef()};
196 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
197 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
198 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
199 SetVertex(xyzVtx,ersVtx);
e43c066c 200
e50912db 201 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 202 for (Int_t i=0;i<100000;i++){
203 fBestTrackIndex[i]=0;
204 }
afd25725 205
206 // store positions of centre of SPD modules (in z)
bf1cd124 207 // The convetion is that fSPDdetzcentre is ordered from -z to +z
afd25725 208 Double_t tr[3];
bf1cd124 209 if (tr[2]<0) { // old geom (up to v5asymmPPR)
210 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
211 fSPDdetzcentre[0] = tr[2];
212 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
213 fSPDdetzcentre[1] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
215 fSPDdetzcentre[2] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
217 fSPDdetzcentre[3] = tr[2];
218 } else { // new geom (from v11Hybrid)
219 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
220 fSPDdetzcentre[0] = tr[2];
221 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
222 fSPDdetzcentre[1] = tr[2];
223 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
224 fSPDdetzcentre[2] = tr[2];
225 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
226 fSPDdetzcentre[3] = tr[2];
227 }
afd25725 228
afd25725 229 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 230 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
231 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
232 fUseTGeo = 3;
233 }
e50912db 234
235 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
236 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
237
81e97e0d 238 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
239
7167ae53 240 // only for plane efficiency evaluation
58e8dc31 241 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
242 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 243 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 244 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 245 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
246 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
247 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
248 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 249 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 250 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
251 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 252 }
628e7bb0 253}
44347160 254//------------------------------------------------------------------------
8221b41b 255AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
256fI(tracker.fI),
257fBestTrack(tracker.fBestTrack),
258fTrackToFollow(tracker.fTrackToFollow),
259fTrackHypothesys(tracker.fTrackHypothesys),
260fBestHypothesys(tracker.fBestHypothesys),
261fOriginal(tracker.fOriginal),
262fCurrentEsdTrack(tracker.fCurrentEsdTrack),
263fPass(tracker.fPass),
264fAfterV0(tracker.fAfterV0),
265fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 266fCoefficients(tracker.fCoefficients),
8221b41b 267fEsd(tracker.fEsd),
e50912db 268fTrackingPhase(tracker.fTrackingPhase),
afd25725 269fUseTGeo(tracker.fUseTGeo),
e50912db 270fNtracks(tracker.fNtracks),
271fxOverX0Pipe(tracker.fxOverX0Pipe),
272fxTimesRhoPipe(tracker.fxTimesRhoPipe),
273fxOverX0PipeTrks(0),
274fxTimesRhoPipeTrks(0),
275fxOverX0ShieldTrks(0),
276fxTimesRhoShieldTrks(0),
277fxOverX0LayerTrks(0),
278fxTimesRhoLayerTrks(0),
4a66240a 279fDebugStreamer(tracker.fDebugStreamer),
23197852 280fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 281fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 282fPlaneEff(tracker.fPlaneEff) {
8221b41b 283 //Copy constructor
e50912db 284 Int_t i;
285 for(i=0;i<4;i++) {
286 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
287 }
288 for(i=0;i<6;i++) {
289 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
290 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
291 }
292 for(i=0;i<2;i++) {
293 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
294 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
295 }
8221b41b 296}
44347160 297//------------------------------------------------------------------------
8221b41b 298AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
299 //Assignment operator
300 this->~AliITStrackerMI();
301 new(this) AliITStrackerMI(tracker);
302 return *this;
303}
44347160 304//------------------------------------------------------------------------
628e7bb0 305AliITStrackerMI::~AliITStrackerMI()
306{
307 //
308 //destructor
309 //
e50912db 310 if (fCoefficients) delete [] fCoefficients;
311 DeleteTrksMaterialLUT();
81e97e0d 312 if (fDebugStreamer) {
313 //fDebugStreamer->Close();
314 delete fDebugStreamer;
315 }
23197852 316 if(fITSChannelStatus) delete fITSChannelStatus;
317 if(fPlaneEff) delete fPlaneEff;
e43c066c 318}
44347160 319//------------------------------------------------------------------------
23197852 320void AliITStrackerMI::ReadBadFromDetTypeRec() {
321 //--------------------------------------------------------------------
322 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
323 //i.e. from OCDB
324 //--------------------------------------------------------------------
325
326 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
327
4187a601 328 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 329
a70ed6ad 330 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 331
332 // ITS channels map
333 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 334 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 335
336 // ITS detectors and chips
337 Int_t i=0,j=0,k=0,ndet=0;
338 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 339 Int_t nBadDetsPerLayer=0;
23197852 340 ndet=AliITSgeomTGeo::GetNDetectors(i);
341 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
342 for (k=1; k<ndet+1; k++) {
343 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 344 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 345 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 346 } // end loop on detectors
347 } // end loop on ladders
4187a601 348 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 349 } // end loop on layers
350
351 return;
352}
353//------------------------------------------------------------------------
e43c066c 354Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
355 //--------------------------------------------------------------------
356 //This function loads ITS clusters
357 //--------------------------------------------------------------------
2b295109 358
359 TClonesArray *clusters = NULL;
360 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
361 clusters=rpcont->FetchClusters(0,cTree);
362 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
363 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
364 return 1;
e43c066c 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++) {
2b295109 372 // if (!cTree->GetEvent(j)) continue;
373 clusters = rpcont->UncheckedGetClusters(j);
374 if(!clusters)continue;
e43c066c 375 Int_t ncl=clusters->GetEntriesFast();
376 SignDeltas(clusters,GetZ());
1f3e997f 377
e43c066c 378 while (ncl--) {
00a7cc50 379 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 380 detector=c->GetDetectorIndex();
a504d56f 381
75fb37cc 382 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 383
384 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
385 if(retval) {
386 AliWarning(Form("Too many clusters on layer %d!",i));
387 break;
388 }
e43c066c 389 }
6262dd3d 390
afd25725 391 // add dead zone "virtual" cluster in SPD, if there is a cluster within
392 // zwindow cm from the dead zone
bf1cd124 393 // This method assumes that fSPDdetzcentre is ordered from -z to +z
afd25725 394 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 395 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 396 Int_t lab[4] = {0,0,0,detector};
397 Int_t info[3] = {0,0,i};
6518a6c5 398 Float_t q = 0.; // this identifies virtual clusters
afd25725 399 Float_t hit[5] = {xdead,
400 0.,
401 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
402 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
403 q};
404 Bool_t local = kTRUE;
405 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 406 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 407 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
408 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 409 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 410 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
411 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 412 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 413 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
414 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 415 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 416 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
417 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 418 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 419 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
420 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 421 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 422 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
423 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 424 }
6518a6c5 425 } // "virtual" clusters in SPD
e43c066c 426
427 }
428 //
429 fgLayers[i].ResetRoad(); //road defined by the cluster density
430 fgLayers[i].SortClusters();
431 }
432
4fa7f7d1 433 // check whether we have to skip some layers
434 SetForceSkippingOfLayer();
435
e43c066c 436 return 0;
437}
44347160 438//------------------------------------------------------------------------
e43c066c 439void AliITStrackerMI::UnloadClusters() {
440 //--------------------------------------------------------------------
441 //This function unloads ITS clusters
442 //--------------------------------------------------------------------
e50912db 443 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 444}
44347160 445//------------------------------------------------------------------------
23197852 446void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
447 //--------------------------------------------------------------------
448 // Publishes all pointers to clusters known to the tracker into the
449 // passed object array.
450 // The ownership is not transfered - the caller is not expected to delete
451 // the clusters.
452 //--------------------------------------------------------------------
453
454 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
455 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
456 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
457 array->AddLast(cl);
458 }
459 }
460
461 return;
462}
463//------------------------------------------------------------------------
44396017 464Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 465 //--------------------------------------------------------------------
466 // Correction for the material between the TPC and the ITS
e43c066c 467 //--------------------------------------------------------------------
e50912db 468 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
469 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
470 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
471 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
472 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
473 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
474 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
475 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 476 } else {
44396017 477 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 478 return 0;
e43c066c 479 }
480
e50912db 481 return 1;
e43c066c 482}
44347160 483//------------------------------------------------------------------------
af885e0f 484Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 485 //--------------------------------------------------------------------
486 // This functions reconstructs ITS tracks
487 // The clusters must be already loaded !
488 //--------------------------------------------------------------------
fddf8459 489
4fa7f7d1 490 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 491
e50912db 492 fTrackingPhase="Clusters2Tracks";
493
e43c066c 494 TObjArray itsTracks(15000);
628e7bb0 495 fOriginal.Clear();
81e97e0d 496 fEsd = event; // store pointer to the esd
afd25725 497
9a5326b1 498 // temporary (for cosmics)
499 if(event->GetVertex()) {
500 TString title = event->GetVertex()->GetTitle();
501 if(title.Contains("cosmics")) {
502 Double_t xyz[3]={GetX(),GetY(),GetZ()};
503 Double_t exyz[3]={0.1,0.1,0.1};
504 SetVertex(xyz,exyz);
505 }
506 }
507 // temporary
75a74b11 508 Int_t noesd = 0;
e43c066c 509 {/* Read ESD tracks */
afd25725 510 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 511 Int_t nentr=event->GetNumberOfTracks();
75a74b11 512 noesd=nentr;
513 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 514 while (nentr--) {
515 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 516 // ---- for debugging:
517 //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 518
519 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
520 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
521 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 522 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 523 AliITStrackMI *t=0;
e43c066c 524 try {
15dd636f 525 t=new AliITStrackMI(*esd);
e43c066c 526 } catch (const Char_t *msg) {
628e7bb0 527 //Warning("Clusters2Tracks",msg);
e43c066c 528 delete t;
529 continue;
530 }
b9671574 531 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
532 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 533
534
afd25725 535 // look at the ESD mass hypothesys !
536 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 537 // write expected q
b9671574 538 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 539
afd25725 540 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 541 //track - can be V0 according to TPC
afd25725 542 } else {
543 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 544 delete t;
545 continue;
e50912db 546 }
afd25725 547 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 548 delete t;
549 continue;
550 }
6c23ffed 551 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 552 delete t;
553 continue;
554 }
e50912db 555 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 556 delete t;
557 continue;
558 }
e43c066c 559 }
b9671574 560 t->SetReconstructed(kFALSE);
e43c066c 561 itsTracks.AddLast(t);
628e7bb0 562 fOriginal.AddLast(t);
e43c066c 563 }
564 } /* End Read ESD tracks */
565
566 itsTracks.Sort();
628e7bb0 567 fOriginal.Sort();
e43c066c 568 Int_t nentr=itsTracks.GetEntriesFast();
569 fTrackHypothesys.Expand(nentr);
81e97e0d 570 fBestHypothesys.Expand(nentr);
afd25725 571 MakeCoefficients(nentr);
513ab112 572 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 573 Int_t ntrk=0;
afd25725 574 // THE TWO TRACKING PASSES
e43c066c 575 for (fPass=0; fPass<2; fPass++) {
576 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 577 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 578 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 579 if (t==0) continue; //this track has been already tracked
1c97ce2f 580 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 581 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 582 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 583 if (fConstraint[fPass]) {
584 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
585 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
586 }
e43c066c 587
588 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 589 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 590 fI = 6;
591 ResetTrackToFollow(*t);
592 ResetBestTrack();
6518a6c5 593
e50912db 594 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 595
e43c066c 596
597 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
598 //
ae00569a 599 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 600 if (!besttrack) continue;
601 besttrack->SetLabel(tpcLabel);
602 // besttrack->CookdEdx();
603 CookdEdx(besttrack);
b9671574 604 besttrack->SetFakeRatio(1.);
e43c066c 605 CookLabel(besttrack,0.); //For comparison only
e43c066c 606 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 607
628e7bb0 608 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
609
b9671574 610 t->SetReconstructed(kTRUE);
1c97ce2f 611 ntrk++;
4187a601 612 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 613 }
614 GetBestHypothesysMIP(itsTracks);
afd25725 615 } // end loop on the two tracking passes
e43c066c 616
cd90f0a2 617 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
618 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 619 fAfterV0 = kTRUE;
628e7bb0 620 //
e43c066c 621 itsTracks.Delete();
622 //
623 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 624 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 625 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
626 if (array) array->Delete();
627 delete fTrackHypothesys.RemoveAt(ientry);
628 }
629
630 fTrackHypothesys.Delete();
81e97e0d 631 fBestHypothesys.Delete();
628e7bb0 632 fOriginal.Clear();
afd25725 633 delete [] fCoefficients;
634 fCoefficients=0;
e50912db 635 DeleteTrksMaterialLUT();
636
75a74b11 637 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 638
639 fTrackingPhase="Default";
628e7bb0 640
e43c066c 641 return 0;
642}
44347160 643//------------------------------------------------------------------------
af885e0f 644Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 645 //--------------------------------------------------------------------
646 // This functions propagates reconstructed ITS tracks back
647 // The clusters must be loaded !
648 //--------------------------------------------------------------------
e50912db 649 fTrackingPhase="PropagateBack";
e43c066c 650 Int_t nentr=event->GetNumberOfTracks();
75a74b11 651 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 652
653 Int_t ntrk=0;
654 for (Int_t i=0; i<nentr; i++) {
655 AliESDtrack *esd=event->GetTrack(i);
656
657 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
658 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
659
15dd636f 660 AliITStrackMI *t=0;
e43c066c 661 try {
15dd636f 662 t=new AliITStrackMI(*esd);
e43c066c 663 } catch (const Char_t *msg) {
628e7bb0 664 //Warning("PropagateBack",msg);
e43c066c 665 delete t;
666 continue;
667 }
b9671574 668 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 669
670 ResetTrackToFollow(*t);
4fa7f7d1 671
67178f34 672 /*
9a5326b1 673 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 674 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 675 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
676 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
677 fTrackToFollow.StartTimeIntegral();
678 // from vertex to outside pipe
679 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 680 }*/
681 // Start time integral and add distance from current position to vertex
682 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
683 fTrackToFollow.GetXYZ(xyzTrk);
684 Double_t dst2 = 0.;
685 for (Int_t icoord=0; icoord<3; icoord++) {
686 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
687 dst2 += di*di;
e43c066c 688 }
67178f34 689 fTrackToFollow.StartTimeIntegral();
690 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 691
6c94f330 692 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 693 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
694 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 695 delete t;
696 continue;
697 }
698 fTrackToFollow.SetLabel(t->GetLabel());
699 //fTrackToFollow.CookdEdx();
700 CookLabel(&fTrackToFollow,0.); //For comparison only
701 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
702 //UseClusters(&fTrackToFollow);
703 ntrk++;
704 }
705 delete t;
706 }
707
75a74b11 708 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 709
e50912db 710 fTrackingPhase="Default";
711
e43c066c 712 return 0;
713}
44347160 714//------------------------------------------------------------------------
af885e0f 715Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 716 //--------------------------------------------------------------------
717 // This functions refits ITS tracks using the
718 // "inward propagated" TPC tracks
719 // The clusters must be loaded !
720 //--------------------------------------------------------------------
e50912db 721 fTrackingPhase="RefitInward";
44396017 722
cd90f0a2 723 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 724
e43c066c 725 Int_t nentr=event->GetNumberOfTracks();
75a74b11 726 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 727
728 Int_t ntrk=0;
729 for (Int_t i=0; i<nentr; i++) {
730 AliESDtrack *esd=event->GetTrack(i);
731
732 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
733 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
734 if (esd->GetStatus()&AliESDtrack::kTPCout)
735 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
736
15dd636f 737 AliITStrackMI *t=0;
e43c066c 738 try {
15dd636f 739 t=new AliITStrackMI(*esd);
e43c066c 740 } catch (const Char_t *msg) {
628e7bb0 741 //Warning("RefitInward",msg);
e43c066c 742 delete t;
743 continue;
744 }
b9671574 745 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 746 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 747 delete t;
748 continue;
749 }
750
751 ResetTrackToFollow(*t);
752 fTrackToFollow.ResetClusters();
753
754 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 755 fTrackToFollow.ResetCovariance(10.);
e43c066c 756
757 //Refitting...
58e8dc31 758 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
759 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 760
4187a601 761 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 762 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 763 AliDebug(2," refit OK");
e43c066c 764 fTrackToFollow.SetLabel(t->GetLabel());
765 // fTrackToFollow.CookdEdx();
766 CookdEdx(&fTrackToFollow);
767
768 CookLabel(&fTrackToFollow,0.0); //For comparison only
769
9a5326b1 770 //The beam pipe
e50912db 771 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 772 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 773 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 774 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
775 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 776 Double_t r[3]={0.,0.,0.};
9a5326b1 777 Double_t maxD=3.;
778 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
779 ntrk++;
e43c066c 780 }
781 }
782 delete t;
783 }
784
75a74b11 785 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 786
e50912db 787 fTrackingPhase="Default";
788
e43c066c 789 return 0;
790}
44347160 791//------------------------------------------------------------------------
e43c066c 792AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
793 //--------------------------------------------------------------------
794 // Return pointer to a given cluster
795 //--------------------------------------------------------------------
796 Int_t l=(index & 0xf0000000) >> 28;
797 Int_t c=(index & 0x0fffffff) >> 00;
798 return fgLayers[l].GetCluster(c);
799}
9a5326b1 800//------------------------------------------------------------------------
df29e9a4 801Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 802 //--------------------------------------------------------------------
df29e9a4 803 // Get track space point with index i
9a5326b1 804 //--------------------------------------------------------------------
60066577 805
78b03929 806 Int_t l=(index & 0xf0000000) >> 28;
807 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 808 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 809 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 810
60066577 811 Float_t xyz[3];
812 Float_t cov[6];
813 cl->GetGlobalXYZ(xyz);
814 cl->GetGlobalCov(cov);
815 p.SetXYZ(xyz, cov);
be77c8c9 816 p.SetCharge(cl->GetQ());
ebbcf1ea 817 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 818 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 819 p.SetClusterType(cl->GetClusterType());
ae079791 820 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 821 switch (l) {
822 case 0:
ae079791 823 iLayer = AliGeomManager::kSPD1;
df29e9a4 824 break;
825 case 1:
ae079791 826 iLayer = AliGeomManager::kSPD2;
df29e9a4 827 break;
828 case 2:
ae079791 829 iLayer = AliGeomManager::kSDD1;
df29e9a4 830 break;
831 case 3:
ae079791 832 iLayer = AliGeomManager::kSDD2;
9a5326b1 833 break;
834 case 4:
835 iLayer = AliGeomManager::kSSD1;
836 break;
837 case 5:
838 iLayer = AliGeomManager::kSSD2;
839 break;
840 default:
841 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
842 break;
843 };
844 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
845 p.SetVolumeID((UShort_t)volid);
846 return kTRUE;
847}
848//------------------------------------------------------------------------
849Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
850 AliTrackPoint& p, const AliESDtrack *t) {
851 //--------------------------------------------------------------------
852 // Get track space point with index i
853 // (assign error estimated during the tracking)
854 //--------------------------------------------------------------------
855
856 Int_t l=(index & 0xf0000000) >> 28;
857 Int_t c=(index & 0x0fffffff) >> 00;
858 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
859 Int_t idet = cl->GetDetectorIndex();
4187a601 860
9a5326b1 861 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
862
863 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
864 Float_t detxy[2];
865 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
866 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
867 Double_t alpha = t->GetAlpha();
868 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 869 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 870 phi += alpha-det.GetPhi();
871 Float_t tgphi = TMath::Tan(phi);
872
873 Float_t tgl = t->GetTgl(); // tgl about const along track
874 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
875
d9ead1a0 876 Float_t errtrky,errtrkz,covyz;
8c139cf3 877 Bool_t addMisalErr=kFALSE;
d9ead1a0 878 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 879
880 Float_t xyz[3];
881 Float_t cov[6];
882 cl->GetGlobalXYZ(xyz);
883 // cl->GetGlobalCov(cov);
884 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 885 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 886 tmpcl.GetGlobalCov(cov);
887
888 p.SetXYZ(xyz, cov);
be77c8c9 889 p.SetCharge(cl->GetQ());
ebbcf1ea 890 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 891 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 892 p.SetClusterType(cl->GetClusterType());
9a5326b1 893
894 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
895 switch (l) {
896 case 0:
897 iLayer = AliGeomManager::kSPD1;
898 break;
899 case 1:
900 iLayer = AliGeomManager::kSPD2;
901 break;
902 case 2:
903 iLayer = AliGeomManager::kSDD1;
904 break;
905 case 3:
906 iLayer = AliGeomManager::kSDD2;
df29e9a4 907 break;
908 case 4:
ae079791 909 iLayer = AliGeomManager::kSSD1;
df29e9a4 910 break;
911 case 5:
ae079791 912 iLayer = AliGeomManager::kSSD2;
df29e9a4 913 break;
914 default:
915 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
916 break;
917 };
ae079791 918 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 919
df29e9a4 920 p.SetVolumeID((UShort_t)volid);
921 return kTRUE;
922}
44347160 923//------------------------------------------------------------------------
81e97e0d 924void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 925{
926 //--------------------------------------------------------------------
927 // Follow prolongation tree
928 //--------------------------------------------------------------------
81e97e0d 929 //
afd25725 930 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
931 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
932
2755f080 933
b9671574 934 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 935 if (esd->GetV0Index(0)>0) {
81e97e0d 936 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 937 // mapping of ESD track is different as ITS track in Containers
81e97e0d 938 // Need something more stable
44347160 939 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 940 for (Int_t i=0;i<3;i++){
941 Int_t index = esd->GetV0Index(i);
942 if (index==0) break;
d6a49f20 943 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 944 if (vertex->GetStatus()<0) continue; // rejected V0
945 //
afd25725 946 if (esd->GetSign()>0) {
947 vertex->SetIndex(0,esdindex);
948 } else {
949 vertex->SetIndex(1,esdindex);
950 }
81e97e0d 951 }
952 }
953 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
954 if (!bestarray){
955 bestarray = new TObjArray(5);
956 fBestHypothesys.AddAt(bestarray,esdindex);
957 }
e43c066c 958
81e97e0d 959 //
e43c066c 960 //setup tree of the prolongations
961 //
15dd636f 962 static AliITStrackMI tracks[7][100];
963 AliITStrackMI *currenttrack;
964 static AliITStrackMI currenttrack1;
965 static AliITStrackMI currenttrack2;
966 static AliITStrackMI backuptrack;
e43c066c 967 Int_t ntracks[7];
968 Int_t nindexes[7][100];
969 Float_t normalizedchi2[100];
970 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 971 otrack->SetNSkipped(0);
15dd636f 972 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 973 ntracks[6]=1;
81e97e0d 974 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 975 Int_t modstatus = 1; // found
976 Float_t xloc,zloc;
e43c066c 977 //
978 //
979 // follow prolongations
e50912db 980 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 981 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 982 fI = ilayer;
e43c066c 983 //
2755f080 984 AliITSlayer &layer=fgLayers[ilayer];
985 Double_t r = layer.GetR();
e43c066c 986 ntracks[ilayer]=0;
987 //
988 //
2755f080 989 Int_t nskipped=0;
e43c066c 990 Float_t nused =0;
e50912db 991 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 992 //set current track
993 if (ntracks[ilayer]>=100) break;
b9671574 994 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
995 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 996 if (ntracks[ilayer]>15+ilayer){
b9671574 997 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
998 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 999 }
1000
15dd636f 1001 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1002
afd25725 1003 // material between SSD and SDD, SDD and SPD
e50912db 1004 if (ilayer==3)
1005 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1006 if (ilayer==1)
1007 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1008
2755f080 1009 // detector number
8602c008 1010 Double_t phi,z;
1011 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1012 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1013
1014 Double_t trackGlobXYZ1[3];
d1181f10 1015 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1016
2755f080 1017 // Get the budget to the primary vertex for the current track being prolonged
1018 Double_t budgetToPrimVertex = GetEffectiveThickness();
1019
1020 // check if we allow a prolongation without point
6518a6c5 1021 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1022 if (skip) {
1023 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1024 // propagate to the layer radius
d1181f10 1025 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1026 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1027 // apply correction for material of the current layer
1028 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1029 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1030 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1031 vtrack->SetClIndex(ilayer,-1);
ae00569a 1032 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1033 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1034 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1035 }
2755f080 1036 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1037 ntracks[ilayer]++;
6518a6c5 1038 continue;
2755f080 1039 }
1040
1041 // track outside layer acceptance in z
1042 if (idet<0) continue;
1043
1044 //propagate to the intersection with the detector plane
1045 const AliITSdetector &det=layer.GetDetector(idet);
1046 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1047 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1048 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1049 currenttrack1.SetDetectorIndex(idet);
1050 currenttrack2.SetDetectorIndex(idet);
d1181f10 1051 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1052
afd25725 1053 //***************
1c97ce2f 1054 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1055 //
2755f080 1056 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1057 Double_t zmin,zmax,ymin,ymax;
1058 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1059
afd25725 1060 // select clusters in road
e43c066c 1061 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1062 //********************
44347160 1063
afd25725 1064 // Define criteria for track-cluster association
44347160 1065 Double_t msz = currenttrack1.GetSigmaZ2() +
1066 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1067 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1068 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1069 Double_t msy = currenttrack1.GetSigmaY2() +
1070 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1071 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1072 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1073 if (constrain) {
1074 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1075 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1076 } else {
1077 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1078 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1079 }
1080 msz = 1./msz; // 1/RoadZ^2
1081 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1082
e43c066c 1083 //
e43c066c 1084 //
afd25725 1085 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1086 //
afd25725 1087 const AliITSRecPoint *cl=0;
1088 Int_t clidx=-1;
1089 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1090 Bool_t deadzoneSPD=kFALSE;
e43c066c 1091 currenttrack = &currenttrack1;
6518a6c5 1092
ae00569a 1093 // check if the road contains a dead zone
23197852 1094 Bool_t noClusters = kFALSE;
1095 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1096 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1097 Double_t dz=0.5*(zmax-zmin);
1098 Double_t dy=0.5*(ymax-ymin);
1099 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1100 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1101 // create a prolongation without clusters (check also if there are no clusters in the road)
1102 if (dead ||
23197852 1103 (noClusters &&
ae00569a 1104 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1105 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1106 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1107 if (dead==0) {
1108 modstatus = 5; // no cls in road
1109 } else if (dead==1) {
1110 modstatus = 7; // holes in z in SPD
f8720bda 1111 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1112 modstatus = 2; // dead from OCDB
1113 }
1114 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1115 // apply correction for material of the current layer
1116 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1117 if (constrain) { // apply vertex constrain
1118 updatetrack->SetConstrain(constrain);
1119 Bool_t isPrim = kTRUE;
1120 if (ilayer<4) { // check that it's close to the vertex
1121 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1122 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1123 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1124 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1125 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1126 }
1127 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1128 }
f8720bda 1129 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1130 if (dead) {
ae00569a 1131 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1132 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1133 deadzoneSPD=kTRUE;
f8720bda 1134 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1135 updatetrack->SetDeadZoneProbability(ilayer,1.);
1136 } else if (dead==4) { // at least a single dead channel from OCDB
1137 updatetrack->SetDeadZoneProbability(ilayer,0.);
1138 }
6518a6c5 1139 }
1140 ntracks[ilayer]++;
1141 }
1142
ae00569a 1143 clidx=-1;
6518a6c5 1144 // loop over clusters in the road
afd25725 1145 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1146 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1147 Bool_t changedet =kFALSE;
88e3c173 1148 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1149 Int_t idetc=cl->GetDetectorIndex();
afd25725 1150
a5d0fae6 1151 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1152 // take into account misalignment (bring track to real detector plane)
1153 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1154 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1155 // a first cut on track-cluster distance
1156 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1157 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1158 { // cluster not associated to track
4187a601 1159 AliDebug(2,"not associated");
1c97ce2f 1160 continue;
1161 }
1162 // bring track back to ideal detector plane
9be1d1c7 1163 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1164 } else { // have to move track to cluster's detector
a5d0fae6 1165 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1166 // a first cut on track-cluster distance
a5d0fae6 1167 Double_t y;
1c97ce2f 1168 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1169 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1170 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1171 continue; // cluster not associated to track
e43c066c 1172 //
15dd636f 1173 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1174 changedet = kTRUE;
e43c066c 1175 currenttrack =&currenttrack2;
a5d0fae6 1176 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1177 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1178 changedet = kFALSE;
e43c066c 1179 continue;
1180 }
a5d0fae6 1181 currenttrack->SetDetectorIndex(idetc);
e50912db 1182 // Get again the budget to the primary vertex
1183 // for the current track being prolonged, if had to change detector
1184 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1185 }
1186
afd25725 1187 // calculate track-clusters chi2
1188 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1189 // chi2 cut
4187a601 1190 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1191 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1192 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1193 if (ntracks[ilayer]>=100) continue;
15dd636f 1194 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1195 updatetrack->SetClIndex(ilayer,-1);
afd25725 1196 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1197
88e3c173 1198 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1199 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1200 AliDebug(2,"update failed");
1c97ce2f 1201 continue;
1202 }
09cf9d66 1203 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1204 modstatus = 1; // found
6518a6c5 1205 } else { // virtual cluster in dead zone
b9671574 1206 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1207 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1208 modstatus = 7; // holes in z in SPD
1209 }
1210
1211 if (changedet) {
1212 Float_t xlocnewdet,zlocnewdet;
d1181f10 1213 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1214 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1215 }
ae00569a 1216 } else {
1217 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1218 }
afd25725 1219 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1220
1221 // apply correction for material of the current layer
e50912db 1222 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1223
afd25725 1224 if (constrain) { // apply vertex constrain
b9671574 1225 updatetrack->SetConstrain(constrain);
e43c066c 1226 Bool_t isPrim = kTRUE;
afd25725 1227 if (ilayer<4) { // check that it's close to the vertex
b9671574 1228 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1229 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1230 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1231 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1232 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1233 }
afd25725 1234 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1235 } //apply vertex constrain
1236 ntracks[ilayer]++;
afd25725 1237 } // create new hypothesis
4187a601 1238 else {
1239 AliDebug(2,"chi2 too large");
1240 }
1241
2755f080 1242 } // loop over possible prolongations
1243
1244 // allow one prolongation without clusters
88e3c173 1245 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1246 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1247 // apply correction for material of the current layer
1248 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1249 vtrack->SetClIndex(ilayer,-1);
ae00569a 1250 modstatus = 3; // skipped
1251 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1252 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1253 vtrack->IncrementNSkipped();
e43c066c 1254 ntracks[ilayer]++;
1255 }
1256
6262dd3d 1257
e50912db 1258 } // loop over tracks in layer ilayer+1
afd25725 1259
1260 //loop over track candidates for the current layer
e43c066c 1261 //
1262 //
1263 Int_t accepted=0;
1264
afd25725 1265 Int_t golden=0;
e43c066c 1266 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1267 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1268 if (normalizedchi2[itrack] <
1269 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1270 if (ilayer>4) {
1271 accepted++;
1272 } else {
1273 if (constrain) { // constrain
afd25725 1274 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1275 accepted++;
44347160 1276 } else { // !constrain
afd25725 1277 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1278 accepted++;
44347160 1279 }
e43c066c 1280 }
1281 }
afd25725 1282 // sort tracks by increasing normalized chi2
1283 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1284 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1285 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1286 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1287 } // end loop over layers
1288
afd25725 1289
1290 //
1291 // Now select tracks to be kept
1292 //
44347160 1293 Int_t max = constrain ? 20 : 5;
e43c066c 1294
afd25725 1295 // tracks that reach layer 0 (SPD inner)
44347160 1296 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1297 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1298 if (track.GetNumberOfClusters()<2) continue;
afd25725 1299 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1300 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1301 continue;
1302 }
15dd636f 1303 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1304 }
afd25725 1305
1306 // tracks that reach layer 1 (SPD outer)
628e7bb0 1307 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1308 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1309 if (track.GetNumberOfClusters()<4) continue;
afd25725 1310 if (!constrain && track.GetNormChi2(1) >
1311 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1312 if (constrain) track.IncrementNSkipped();
81e97e0d 1313 if (!constrain) {
b9671574 1314 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1315 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1316 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1317 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1318 }
1319 }
15dd636f 1320 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1321 }
afd25725 1322
6518a6c5 1323 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1324 if (!constrain){
628e7bb0 1325 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1326 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1327 if (track.GetNumberOfClusters()<3) continue;
afd25725 1328 if (!constrain && track.GetNormChi2(2) >
1329 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1330 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1331 if (!constrain){
b9671574 1332 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1333 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1334 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1335 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1336 }
1337 }
15dd636f 1338 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1339 }
1340 }
81e97e0d 1341
afd25725 1342 if (!constrain) {
81e97e0d 1343 //
afd25725 1344 // register best track of each layer - important for V0 finder
81e97e0d 1345 //
1346 for (Int_t ilayer=0;ilayer<5;ilayer++){
1347 if (ntracks[ilayer]==0) continue;
1348 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1349 if (track.GetNumberOfClusters()<1) continue;
1350 CookLabel(&track,0);
1351 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1352 }
1353 }
1354 //
1355 // update TPC V0 information
1356 //
b9671574 1357 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1358 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1359 for (Int_t i=0;i<3;i++){
b9671574 1360 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1361 if (index==0) break;
44347160 1362 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1363 if (vertex->GetStatus()<0) continue; // rejected V0
1364 //
6c94f330 1365 if (otrack->GetSign()>0) {
81e97e0d 1366 vertex->SetIndex(0,esdindex);
1367 }
1368 else{
1369 vertex->SetIndex(1,esdindex);
1370 }
1371 //find nearest layer with track info
b75d63a7 1372 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1373 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1374 Int_t nearest = nearestold;
1375 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1376 if (ntracks[nearest]==0){
1377 nearest = ilayer;
1378 }
1379 }
1380 //
1381 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1382 if (nearestold<5&&nearest<5){
b9671574 1383 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1384 if (accept){
6c94f330 1385 if (track.GetSign()>0) {
b75d63a7 1386 vertex->SetParamP(track);
81e97e0d 1387 vertex->Update(fprimvertex);
44347160 1388 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1389 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1390 }else{
b75d63a7 1391 vertex->SetParamN(track);
81e97e0d 1392 vertex->Update(fprimvertex);
1393 //vertex->SetIndex(1,track.fESDtrack->GetID());
1394 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1395 }
1396 vertex->SetStatus(vertex->GetStatus()+1);
1397 }else{
44347160 1398 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1399 }
1400 }
81e97e0d 1401 }
afd25725 1402 }
1403
e43c066c 1404}
44347160 1405//------------------------------------------------------------------------
e43c066c 1406AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1407{
1408 //--------------------------------------------------------------------
1409 //
1410 //
1411 return fgLayers[layer];
1412}
44347160 1413//------------------------------------------------------------------------
8221b41b 1414AliITStrackerMI::AliITSlayer::AliITSlayer():
1415fR(0),
1416fPhiOffset(0),
1417fNladders(0),
1418fZOffset(0),
1419fNdetectors(0),
1420fDetectors(0),
1421fN(0),
1422fDy5(0),
1423fDy10(0),
1424fDy20(0),
1425fClustersCs(0),
1426fClusterIndexCs(0),
1427fYcs(0),
1428fZcs(0),
1429fNcs(0),
1430fCurrentSlice(-1),
d9ead1a0 1431fZmin(0),
8221b41b 1432fZmax(0),
1433fYmin(0),
1434fYmax(0),
1435fI(0),
1436fImax(0),
1437fSkip(0),
1438fAccepted(0),
d9ead1a0 1439fRoad(0),
1440fMaxSigmaClY(0),
1441fMaxSigmaClZ(0),
1442fNMaxSigmaCl(3)
1443{
e43c066c 1444 //--------------------------------------------------------------------
1445 //default AliITSlayer constructor
1446 //--------------------------------------------------------------------
e50912db 1447 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1448 fClusterWeight[i]=0;
1449 fClusterTracks[0][i]=-1;
1450 fClusterTracks[1][i]=-1;
1451 fClusterTracks[2][i]=-1;
1452 fClusterTracks[3][i]=-1;
1453 }
1454}
44347160 1455//------------------------------------------------------------------------
e43c066c 1456AliITStrackerMI::AliITSlayer::
8221b41b 1457AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1458fR(r),
1459fPhiOffset(p),
1460fNladders(nl),
1461fZOffset(z),
1462fNdetectors(nd),
1463fDetectors(0),
1464fN(0),
1465fDy5(0),
1466fDy10(0),
1467fDy20(0),
1468fClustersCs(0),
1469fClusterIndexCs(0),
1470fYcs(0),
1471fZcs(0),
1472fNcs(0),
1473fCurrentSlice(-1),
d9ead1a0 1474fZmin(0),
8221b41b 1475fZmax(0),
1476fYmin(0),
1477fYmax(0),
1478fI(0),
1479fImax(0),
1480fSkip(0),
1481fAccepted(0),
d9ead1a0 1482fRoad(0),
1483fMaxSigmaClY(0),
1484fMaxSigmaClZ(0),
1485fNMaxSigmaCl(3) {
e43c066c 1486 //--------------------------------------------------------------------
1487 //main AliITSlayer constructor
1488 //--------------------------------------------------------------------
e43c066c 1489 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1490 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1491}
44347160 1492//------------------------------------------------------------------------
8221b41b 1493AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1494fR(layer.fR),
1495fPhiOffset(layer.fPhiOffset),
1496fNladders(layer.fNladders),
1497fZOffset(layer.fZOffset),
1498fNdetectors(layer.fNdetectors),
1499fDetectors(layer.fDetectors),
1500fN(layer.fN),
1501fDy5(layer.fDy5),
1502fDy10(layer.fDy10),
1503fDy20(layer.fDy20),
1504fClustersCs(layer.fClustersCs),
1505fClusterIndexCs(layer.fClusterIndexCs),
1506fYcs(layer.fYcs),
1507fZcs(layer.fZcs),
1508fNcs(layer.fNcs),
1509fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1510fZmin(layer.fZmin),
8221b41b 1511fZmax(layer.fZmax),
1512fYmin(layer.fYmin),
1513fYmax(layer.fYmax),
1514fI(layer.fI),
1515fImax(layer.fImax),
1516fSkip(layer.fSkip),
1517fAccepted(layer.fAccepted),
d9ead1a0 1518fRoad(layer.fRoad),
1519fMaxSigmaClY(layer.fMaxSigmaClY),
1520fMaxSigmaClZ(layer.fMaxSigmaClZ),
1521fNMaxSigmaCl(layer.fNMaxSigmaCl)
1522{
8221b41b 1523 //Copy constructor
1524}
44347160 1525//------------------------------------------------------------------------
e43c066c 1526AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1527 //--------------------------------------------------------------------
1528 // AliITSlayer destructor
1529 //--------------------------------------------------------------------
23197852 1530 delete [] fDetectors;
e43c066c 1531 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1532 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1533 fClusterWeight[i]=0;
1534 fClusterTracks[0][i]=-1;
1535 fClusterTracks[1][i]=-1;
1536 fClusterTracks[2][i]=-1;
1537 fClusterTracks[3][i]=-1;
1538 }
1539}
44347160 1540//------------------------------------------------------------------------
e43c066c 1541void AliITStrackerMI::AliITSlayer::ResetClusters() {
1542 //--------------------------------------------------------------------
1543 // This function removes loaded clusters
1544 //--------------------------------------------------------------------
1545 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1546 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1547 fClusterWeight[i]=0;
1548 fClusterTracks[0][i]=-1;
1549 fClusterTracks[1][i]=-1;
1550 fClusterTracks[2][i]=-1;
1551 fClusterTracks[3][i]=-1;
1552 }
1553
1554 fN=0;
1555 fI=0;
1556}
44347160 1557//------------------------------------------------------------------------
e43c066c 1558void AliITStrackerMI::AliITSlayer::ResetWeights() {
1559 //--------------------------------------------------------------------
1560 // This function reset weights of the clusters
1561 //--------------------------------------------------------------------
e50912db 1562 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1563 fClusterWeight[i]=0;
1564 fClusterTracks[0][i]=-1;
1565 fClusterTracks[1][i]=-1;
1566 fClusterTracks[2][i]=-1;
1567 fClusterTracks[3][i]=-1;
1568 }
1569 for (Int_t i=0; i<fN;i++) {
00a7cc50 1570 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1571 if (cl&&cl->IsUsed()) cl->Use();
1572 }
1573
1574}
44347160 1575//------------------------------------------------------------------------
e43c066c 1576void AliITStrackerMI::AliITSlayer::ResetRoad() {
1577 //--------------------------------------------------------------------
1578 // This function calculates the road defined by the cluster density
1579 //--------------------------------------------------------------------
1580 Int_t n=0;
1581 for (Int_t i=0; i<fN; i++) {
1582 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1583 }
afd25725 1584 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1585}
44347160 1586//------------------------------------------------------------------------
afd25725 1587Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1588 //--------------------------------------------------------------------
1589 //This function adds a cluster to this layer
1590 //--------------------------------------------------------------------
e50912db 1591 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1592 return 1;
1593 }
1594 fCurrentSlice=-1;
afd25725 1595 fClusters[fN]=cl;
1d4090b7 1596 fN++;
afd25725 1597 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1598 //AD
1599 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1600 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1601 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1602 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1603 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1604 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1605 //AD
1606 /*
afd25725 1607 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1608 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1609 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1610 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1611 */
e43c066c 1612 return 0;
1613}
44347160 1614//------------------------------------------------------------------------
e43c066c 1615void AliITStrackerMI::AliITSlayer::SortClusters()
1616{
1617 //
1618 //sort clusters
1619 //
00a7cc50 1620 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1621 Float_t *z = new Float_t[fN];
1622 Int_t * index = new Int_t[fN];
1623 //
d9ead1a0 1624 fMaxSigmaClY=0.; //AD
1625 fMaxSigmaClZ=0.; //AD
1626
1d4090b7 1627 for (Int_t i=0;i<fN;i++){
1628 z[i] = fClusters[i]->GetZ();
d9ead1a0 1629 // save largest errors in y and z for this layer
1630 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1631 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1632 }
1633 TMath::Sort(fN,z,index,kFALSE);
1634 for (Int_t i=0;i<fN;i++){
1635 clusters[i] = fClusters[index[i]];
1636 }
1637 //
1638 for (Int_t i=0;i<fN;i++){
1639 fClusters[i] = clusters[i];
1640 fZ[i] = fClusters[i]->GetZ();
1641 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1642 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1643 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1644 fY[i] = y;
1645 }
1646 delete[] index;
1647 delete[] z;
1648 delete[] clusters;
1649 //
1650
e43c066c 1651 fYB[0]=10000000;
1652 fYB[1]=-10000000;
1653 for (Int_t i=0;i<fN;i++){
1654 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1655 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1656 fClusterIndex[i] = i;
1657 }
1658 //
1659 // fill slices
1660 fDy5 = (fYB[1]-fYB[0])/5.;
1661 fDy10 = (fYB[1]-fYB[0])/10.;
1662 fDy20 = (fYB[1]-fYB[0])/20.;
1663 for (Int_t i=0;i<6;i++) fN5[i] =0;
1664 for (Int_t i=0;i<11;i++) fN10[i]=0;
1665 for (Int_t i=0;i<21;i++) fN20[i]=0;
1666 //
1667 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;}
1668 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;}
1669 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;}
1670 //
1671 //
1d4090b7 1672 for (Int_t i=0;i<fN;i++)
1673 for (Int_t irot=-1;irot<=1;irot++){
1674 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1675 // slice 5
1676 for (Int_t slice=0; slice<6;slice++){
e50912db 1677 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1678 fClusters5[slice][fN5[slice]] = fClusters[i];
1679 fY5[slice][fN5[slice]] = curY;
1680 fZ5[slice][fN5[slice]] = fZ[i];
1681 fClusterIndex5[slice][fN5[slice]]=i;
1682 fN5[slice]++;
1683 }
e43c066c 1684 }
1d4090b7 1685 // slice 10
1686 for (Int_t slice=0; slice<11;slice++){
e50912db 1687 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1688 fClusters10[slice][fN10[slice]] = fClusters[i];
1689 fY10[slice][fN10[slice]] = curY;
1690 fZ10[slice][fN10[slice]] = fZ[i];
1691 fClusterIndex10[slice][fN10[slice]]=i;
1692 fN10[slice]++;
1693 }
e43c066c 1694 }
1d4090b7 1695 // slice 20
1696 for (Int_t slice=0; slice<21;slice++){
e50912db 1697 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1698 fClusters20[slice][fN20[slice]] = fClusters[i];
1699 fY20[slice][fN20[slice]] = curY;
1700 fZ20[slice][fN20[slice]] = fZ[i];
1701 fClusterIndex20[slice][fN20[slice]]=i;
1702 fN20[slice]++;
1703 }
1704 }
e43c066c 1705 }
1d4090b7 1706
1707 //
1708 // consistency check
1709 //
1710 for (Int_t i=0;i<fN-1;i++){
1711 if (fZ[i]>fZ[i+1]){
ae00569a 1712 printf("Bug\n");
e43c066c 1713 }
1714 }
1d4090b7 1715 //
1716 for (Int_t slice=0;slice<21;slice++)
1717 for (Int_t i=0;i<fN20[slice]-1;i++){
1718 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1719 printf("Bug\n");
1d4090b7 1720 }
1721 }
1722
1723
e43c066c 1724}
44347160 1725//------------------------------------------------------------------------
e43c066c 1726Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1727 //--------------------------------------------------------------------
1728 // This function returns the index of the nearest cluster
1729 //--------------------------------------------------------------------
1730 Int_t ncl=0;
1731 const Float_t *zcl;
1732 if (fCurrentSlice<0) {
1733 ncl = fN;
1734 zcl = fZ;
1735 }
1736 else{
1737 ncl = fNcs;
1738 zcl = fZcs;;
1739 }
1740
1741 if (ncl==0) return 0;
1742 Int_t b=0, e=ncl-1, m=(b+e)/2;
1743 for (; b<e; m=(b+e)/2) {
1744 // if (z > fClusters[m]->GetZ()) b=m+1;
1745 if (z > zcl[m]) b=m+1;
1746 else e=m;
1747 }
1748 return m;
1749}
44347160 1750//------------------------------------------------------------------------
1c97ce2f 1751Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1752 //--------------------------------------------------------------------
1753 // This function computes the rectangular road for this track
1754 //--------------------------------------------------------------------
1755
1756
1757 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1758 // take into account the misalignment: propagate track to misaligned detector plane
1759 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1760
1761 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1762 TMath::Sqrt(track->GetSigmaZ2() +
1763 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1764 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1765 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1766 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1767 TMath::Sqrt(track->GetSigmaY2() +
1768 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1769 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1770 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1771
1772 // track at boundary between detectors, enlarge road
1773 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1774 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1775 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1776 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1777 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1778 Float_t tgl = TMath::Abs(track->GetTgl());
1779 if (tgl > 1.) tgl=1.;
1780 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1781 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1782 Float_t snp = TMath::Abs(track->GetSnp());
1783 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1784 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1785 } // boundary
1786
1787 // add to the road a term (up to 2-3 mm) to deal with misalignments
1788 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1789 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1790
1791 Double_t r = fgLayers[ilayer].GetR();
1792 zmin = track->GetZ() - dz;
1793 zmax = track->GetZ() + dz;
1794 ymin = track->GetY() + r*det.GetPhi() - dy;
1795 ymax = track->GetY() + r*det.GetPhi() + dy;
1796
1797 // bring track back to idead detector plane
1798 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1799
1800 return kTRUE;
1801}
1802//------------------------------------------------------------------------
e43c066c 1803void AliITStrackerMI::AliITSlayer::
1804SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1805 //--------------------------------------------------------------------
1806 // This function sets the "window"
1807 //--------------------------------------------------------------------
1808
628e7bb0 1809 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1810 fYmin = ymin;
1811 fYmax = ymax;
1812 fZmin = zmin;
1813 fZmax = zmax;
1814 // AD
1815 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1816 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1817 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1818 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1819 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1820
e43c066c 1821 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1822 if (ymiddle<fYB[0]) {
1823 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1824 } else if (ymiddle>fYB[1]) {
1825 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1826 }
ae00569a 1827
e43c066c 1828 //
1829 fCurrentSlice =-1;
1830 // defualt take all
1831 fClustersCs = fClusters;
1832 fClusterIndexCs = fClusterIndex;
1833 fYcs = fY;
1834 fZcs = fZ;
1835 fNcs = fN;
628e7bb0 1836 //
e43c066c 1837 //is in 20 slice?
1838 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1839 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1840 if (slice<0) slice=0;
1841 if (slice>20) slice=20;
1842 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1843 if (isOK) {
1844 fCurrentSlice=slice;
1845 fClustersCs = fClusters20[fCurrentSlice];
1846 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1847 fYcs = fY20[fCurrentSlice];
1848 fZcs = fZ20[fCurrentSlice];
1849 fNcs = fN20[fCurrentSlice];
1850 }
1851 }
1852 //
1853 //is in 10 slice?
1854 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1855 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1856 if (slice<0) slice=0;
1857 if (slice>10) slice=10;
1858 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1859 if (isOK) {
1860 fCurrentSlice=slice;
1861 fClustersCs = fClusters10[fCurrentSlice];
1862 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1863 fYcs = fY10[fCurrentSlice];
1864 fZcs = fZ10[fCurrentSlice];
1865 fNcs = fN10[fCurrentSlice];
1866 }
1867 }
1868 //
1869 //is in 5 slice?
1870 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1871 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1872 if (slice<0) slice=0;
1873 if (slice>5) slice=5;
1874 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1875 if (isOK) {
e43c066c 1876 fCurrentSlice=slice;
1877 fClustersCs = fClusters5[fCurrentSlice];
1878 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1879 fYcs = fY5[fCurrentSlice];
1880 fZcs = fZ5[fCurrentSlice];
1881 fNcs = fN5[fCurrentSlice];
1882 }
1883 }
628e7bb0 1884 //
d9ead1a0 1885 fI = FindClusterIndex(fZmin);
1886 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1887 fSkip = 0;
1888 fAccepted = 0;
6518a6c5 1889
1890 return;
e43c066c 1891}
44347160 1892//------------------------------------------------------------------------
628e7bb0 1893Int_t AliITStrackerMI::AliITSlayer::
1894FindDetectorIndex(Double_t phi, Double_t z) const {
1895 //--------------------------------------------------------------------
1896 //This function finds the detector crossed by the track
1897 //--------------------------------------------------------------------
31fb8575 1898 Double_t dphi;
1899 if (fZOffset<0) // old geometry
1900 dphi = -(phi-fPhiOffset);
1901 else // new geometry
1902 dphi = phi-fPhiOffset;
1903
6518a6c5 1904
628e7bb0 1905 if (dphi < 0) dphi += 2*TMath::Pi();
1906 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1907 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1908 if (np>=fNladders) np-=fNladders;
1909 if (np<0) np+=fNladders;
1910
6518a6c5 1911
628e7bb0 1912 Double_t dz=fZOffset-z;
6518a6c5 1913 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1914 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 1915 if (nz>=fNdetectors || nz<0) {
1916 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1917 return -1;
1918 }
628e7bb0 1919
23197852 1920 // ad hoc correction for 3rd ladder of SDD inner layer,
1921 // which is reversed (rotated by pi around local y)
1922 // this correction is OK only from AliITSv11Hybrid onwards
1923 if (GetR()>12. && GetR()<20.) { // SDD inner
1924 if(np==2) { // 3rd ladder
6801b453 1925 Double_t posMod252[3];
1926 AliITSgeomTGeo::GetTranslation(252,posMod252);
1927 // check the Z coordinate of Mod 252: if negative
1928 // (old SDD geometry in AliITSv11Hybrid)
1929 // the swap of numeration whould be applied
1930 if(posMod252[2]<0.){
1931 nz = (fNdetectors-1) - nz;
1932 }
1933 }
23197852 1934 }
1935 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1936
1937
628e7bb0 1938 return np*fNdetectors + nz;
1939}
44347160 1940//------------------------------------------------------------------------
ae00569a 1941const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1942{
e43c066c 1943 //--------------------------------------------------------------------
1944 // This function returns clusters within the "window"
1945 //--------------------------------------------------------------------
1946
ae00569a 1947 if (fCurrentSlice<0) {
e43c066c 1948 Double_t rpi2 = 2.*fR*TMath::Pi();
1949 for (Int_t i=fI; i<fImax; i++) {
1950 Double_t y = fY[i];
d9ead1a0 1951 Double_t z = fZ[i];
e43c066c 1952 if (fYmax<y) y -= rpi2;
1d4090b7 1953 if (fYmin>y) y += rpi2;
e43c066c 1954 if (y<fYmin) continue;
1955 if (y>fYmax) continue;
d9ead1a0 1956 // AD
1957 // skip clusters that are in "extended" road but they
1958 // 3sigma error does not touch the original road
1959 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1960 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1961 //
88e3c173 1962 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1963 ci=i;
ae00569a 1964 if (!test) fI=i+1;
e43c066c 1965 return fClusters[i];
1966 }
ae00569a 1967 } else {
e43c066c 1968 for (Int_t i=fI; i<fImax; i++) {
1969 if (fYcs[i]<fYmin) continue;
1970 if (fYcs[i]>fYmax) continue;
88e3c173 1971 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1972 ci=fClusterIndexCs[i];
ae00569a 1973 if (!test) fI=i+1;
e43c066c 1974 return fClustersCs[i];
1975 }
1976 }
1977 return 0;
1978}
44347160 1979//------------------------------------------------------------------------
e43c066c 1980Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1981const {
1982 //--------------------------------------------------------------------
afd25725 1983 // This function returns the layer thickness at this point (units X0)
e43c066c 1984 //--------------------------------------------------------------------
1985 Double_t d=0.0085;
e50912db 1986 x0=AliITSRecoParam::GetX0Air();
e43c066c 1987 if (43<fR&&fR<45) { //SSD2
1988 Double_t dd=0.0034;
1989 d=dd;
1990 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1991 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1992 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1993 for (Int_t i=0; i<12; i++) {
1994 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1995 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1996 d+=0.0034;
1997 break;
1998 }
1999 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2000 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2001 d+=0.0034;
2002 break;
2003 }
2004 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2005 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2006 }
2007 } else
2008 if (37<fR&&fR<41) { //SSD1
2009 Double_t dd=0.0034;
2010 d=dd;
2011 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2012 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2013 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2014 for (Int_t i=0; i<11; i++) {
2015 if (TMath::Abs(z-3.9*i)<0.15) {
2016 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2017 d+=dd;
2018 break;
2019 }
2020 if (TMath::Abs(z+3.9*i)<0.15) {
2021 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2022 d+=dd;
2023 break;
2024 }
2025 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2026 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2027 }
2028 } else
2029 if (13<fR&&fR<26) { //SDD
2030 Double_t dd=0.0033;
2031 d=dd;
2032 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2033
2034 if (TMath::Abs(y-1.80)<0.55) {
2035 d+=0.016;
2036 for (Int_t j=0; j<20; j++) {
2037 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2038 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2039 }
2040 }
2041 if (TMath::Abs(y+1.80)<0.55) {
2042 d+=0.016;
2043 for (Int_t j=0; j<20; j++) {
2044 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2045 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2046 }
2047 }
2048
2049 for (Int_t i=0; i<4; i++) {
2050 if (TMath::Abs(z-7.3*i)<0.60) {
2051 d+=dd;
2052 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2053 break;
2054 }
2055 if (TMath::Abs(z+7.3*i)<0.60) {
2056 d+=dd;
2057 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2058 break;
2059 }
2060 }
2061 } else
2062 if (6<fR&&fR<8) { //SPD2
2063 Double_t dd=0.0063; x0=21.5;
2064 d=dd;
2065 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2066 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2067 } else
2068 if (3<fR&&fR<5) { //SPD1
2069 Double_t dd=0.0063; x0=21.5;
2070 d=dd;
2071 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2072 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2073 }
2074
2075 return d;
2076}
44347160 2077//------------------------------------------------------------------------
23197852 2078AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2079fR(det.fR),
1c97ce2f 2080fRmisal(det.fRmisal),
23197852 2081fPhi(det.fPhi),
2082fSinPhi(det.fSinPhi),
2083fCosPhi(det.fCosPhi),
2084fYmin(det.fYmin),
2085fYmax(det.fYmax),
2086fZmin(det.fZmin),
2087fZmax(det.fZmax),
2088fIsBad(det.fIsBad),
2089fNChips(det.fNChips),
2090fChipIsBad(det.fChipIsBad)
2091{
2092 //Copy constructor
2093}
2094//------------------------------------------------------------------------
2095void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2096 const AliITSDetTypeRec *detTypeRec)
23197852 2097{
2098 //--------------------------------------------------------------------
2099 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2100 //--------------------------------------------------------------------
2101
2102 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2103 // while in the tracker they start from 0 for each layer
2104 for(Int_t il=0; il<ilayer; il++)
2105 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2106
2107 Int_t detType;
2108 if (ilayer==0 || ilayer==1) { // ---------- SPD
2109 detType = 0;
2110 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2111 detType = 1;
2112 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2113 detType = 2;
2114 } else {
2115 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2116 return;
2117 }
2118
2119 // Get calibration from AliITSDetTypeRec
2120 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2121 calib->SetModuleIndex(idet);
23197852 2122 AliITSCalibration *calibSPDdead = 0;
2123 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2124 if (calib->IsBad() ||
2125 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2126 {
2127 SetBad();
359ac74d 2128 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2129 }
2130
2131 // Get segmentation from AliITSDetTypeRec
2132 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2133
2134 // Read info about bad chips
2135 fNChips = segm->GetMaximumChipIndex()+1;
2136 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2137 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2138 fChipIsBad = new Bool_t[fNChips];
2139 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2140 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2141 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2142 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2143 }
2144
2145 return;
2146}
2147//------------------------------------------------------------------------
e50912db 2148Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2149{
2150 //--------------------------------------------------------------------
afd25725 2151 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2152 //--------------------------------------------------------------------
e43c066c 2153
e50912db 2154 if(fUseTGeo!=0) {
2155 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2156 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2157 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2158 }
2159
afd25725 2160 // beam pipe
e50912db 2161 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2162 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2163
2164 // layers
2165 Double_t x0=0;
e43c066c 2166 Double_t xn=fgLayers[fI].GetR();
2167 for (Int_t i=0; i<fI; i++) {
2168 Double_t xi=fgLayers[i].GetR();
e50912db 2169 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2170 d+=dLayer*xi*xi;
e43c066c 2171 }
2172
afd25725 2173 // shields
e43c066c 2174 if (fI>1) {
e50912db 2175 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2176 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2177 }
e43c066c 2178 if (fI>3) {
e50912db 2179 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2180 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2181 }
e43c066c 2182 return d/(xn*xn);
2183}
44347160 2184//------------------------------------------------------------------------
e43c066c 2185Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2186 //-------------------------------------------------------------------
e43c066c 2187 // This function returns number of clusters within the "window"
2188 //--------------------------------------------------------------------
2189 Int_t ncl=0;
2190 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2191 const AliITSRecPoint *c=fClusters[i];
e43c066c 2192 if (c->GetZ() > fZmax) break;
2193 if (c->IsUsed()) continue;
2194 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2195 Double_t y=fR*det.GetPhi() + c->GetY();
2196
2197 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2198 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2199
2200 if (y<fYmin) continue;
2201 if (y>fYmax) continue;
2202 ncl++;
2203 }
2204 return ncl;
2205}
44347160 2206//------------------------------------------------------------------------
ae00569a 2207Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2208 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2209{
e43c066c 2210 //--------------------------------------------------------------------
ae00569a 2211 // This function refits the track "track" at the position "x" using
2212 // the clusters from "clusters"
ef7253ac 2213 // If "extra"==kTRUE,
ae00569a 2214 // the clusters from overlapped modules get attached to "track"
7167ae53 2215 // If "planeff"==kTRUE,
2216 // special approach for plane efficiency evaluation is applyed
e43c066c 2217 //--------------------------------------------------------------------
6518a6c5 2218
e50912db 2219 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2220 Int_t k;
e50912db 2221 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2222 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2223 for (k=0; k<nc; k++) {
ae00569a 2224 Int_t idx=clusters->GetClusterIndex(k);
2225 Int_t ilayer=(idx&0xf0000000)>>28;
2226 index[ilayer]=idx;
e43c066c 2227 }
67c1e979 2228
7167ae53 2229 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2230}
44347160 2231//------------------------------------------------------------------------
ae00569a 2232Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2233 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2234{
67c1e979 2235 //--------------------------------------------------------------------
ae00569a 2236 // This function refits the track "track" at the position "x" using
67c1e979 2237 // the clusters from array
ae00569a 2238 // If "extra"==kTRUE,
2239 // the clusters from overlapped modules get attached to "track"
7167ae53 2240 // If "planeff"==kTRUE,
2241 // special approach for plane efficiency evaluation is applyed
67c1e979 2242 //--------------------------------------------------------------------
e50912db 2243 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2244 Int_t k;
e50912db 2245 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2246 //
e50912db 2247 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2248 index[k]=clusters[k];
67c1e979 2249 }
2250
afd25725 2251 // special for cosmics: check which the innermost layer crossed
2252 // by the track
2253 Int_t innermostlayer=5;
ae00569a 2254 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2255 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2256 if(drphi < fgLayers[innermostlayer].GetR()) break;
2257 }
4fa7f7d1 2258 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
afd25725 2259
ae00569a 2260 Int_t modstatus=1; // found
2261 Float_t xloc,zloc;
67c1e979 2262 Int_t from, to, step;
ae00569a 2263 if (xx > track->GetX()) {
e50912db 2264 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2265 step=+1;
2266 } else {
e50912db 2267 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2268 step=-1;
2269 }
ae00569a 2270 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2271
ae00569a 2272 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2273 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2274 Double_t r=layer.GetR();
4fa7f7d1 2275
afd25725 2276 if (step<0 && xx>r) break;
2277
2278 // material between SSD and SDD, SDD and SPD
6518a6c5 2279 Double_t hI=ilayer-0.5*step;
e50912db 2280 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2281 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2282 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2283 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2284
ae00569a 2285
afd25725 2286 Double_t oldGlobXYZ[3];
d1181f10 2287 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2288
67178f34 2289 // continue if we are already beyond this layer
2290 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2291 if(step>0 && oldGlobR > r) continue; // going outward
2292 if(step<0 && oldGlobR < r) continue; // going inward
2293
8602c008 2294 Double_t phi,z;
ae00569a 2295 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2296
67c1e979 2297 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2298
2299 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2300 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2301 if (skip==2) {
ae00569a 2302 modstatus = 4; // out in z
d1181f10 2303 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2304 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2305 }
7131593b 2306 // cross layer
2307 // apply correction for material of the current layer
2308 // add time if going outward
2309 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2310 continue;
2311 }
2312
e50912db 2313 if (idet<0) return kFALSE;
ae00569a 2314
4fa7f7d1 2315
67c1e979 2316 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2317 // only for ITS-SA tracks refit
2318 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2319 //
1c97ce2f 2320 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2321
ae00569a 2322 track->SetDetectorIndex(idet);
d1181f10 2323 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2324
23197852 2325 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2326
2327 const AliITSRecPoint *clAcc=0;
44347160 2328 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2329
6518a6c5 2330 Int_t idx=index[ilayer];
ae00569a 2331 if (idx>=0) { // cluster in this layer
2332 modstatus = 6; // no refit
2333 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2334 if (cl) {
2335 if (idet != cl->GetDetectorIndex()) {
2336 idet=cl->GetDetectorIndex();
a5d0fae6 2337 const AliITSdetector &detc=layer.GetDetector(idet);
2338 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2339 track->SetDetectorIndex(idet);
d1181f10 2340 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2341 }
ae00569a 2342 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2343 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2344 if (chi2<maxchi2) {
2345 clAcc=cl;
2346 maxchi2=chi2;
2347 modstatus = 1; // found
2348 } else {
7167ae53 2349 return kFALSE; //
ae00569a 2350 }
2351 }
2352 } else { // no cluster in this layer
2353 if (skip==1) {
2354 modstatus = 3; // skipped
0ed58a47 2355 // Plane Eff determination:
2356 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2357 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2358 UseTrackForPlaneEff(track,ilayer);
7167ae53 2359 }
ae00569a 2360 } else {
2361 modstatus = 5; // no cls in road
2362 // check dead
1c97ce2f 2363 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2364 dz = 0.5*(zmax-zmin);
2365 dy = 0.5*(ymax-ymin);
2366 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2367 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2368 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2369 }
e43c066c 2370 }
ae00569a 2371
2372 if (clAcc) {
2373 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2374 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2375 }
ae00569a 2376 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2377
2378
2379 if (extra) { // search for extra clusters in overlapped modules
2380 AliITStrackV2 tmp(*track);
1c97ce2f 2381 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2382 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2383
2384 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2385 Int_t idetExtra=-1;
a5d0fae6 2386 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2387 Double_t tolerance=0.1;
ae00569a 2388 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2389 // only clusters in another module! (overlaps)
2390 idetExtra = clExtra->GetDetectorIndex();
2391 if (idet == idetExtra) continue;
2392
a5d0fae6 2393 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2394
1c97ce2f 2395 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2396 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2397 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2398 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2399
2400 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2401 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2402 }
2403 if (cci>=0) {
2404 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2405 track->SetExtraModule(ilayer,idetExtra);
2406 }
2407 } // end search for extra clusters in overlapped modules
1c97ce2f 2408
afd25725 2409 // Correct for material of the current layer
7131593b 2410 // cross material
2411 // add time if going outward
ae00569a 2412 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2413 track->SetCheckInvariant(kTRUE);
ae00569a 2414 } // end loop on layers
2415
db355ee7 2416 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2417
e43c066c 2418 return kTRUE;
2419}
44347160 2420//------------------------------------------------------------------------
15dd636f 2421Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2422{
2423 //
2424 // calculate normalized chi2
2425 // return NormalizedChi2(track,0);
2426 Float_t chi2 = 0;
2427 Float_t sum=0;
2428 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2429 // track->fdEdxMismatch=0;
2430 Float_t dedxmismatch =0;
2431 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2432 if (mode<100){
2433 for (Int_t i = 0;i<6;i++){
9fd412a8 2434 if (track->GetClIndex(i)>=0){
e43c066c 2435 Float_t cerry, cerrz;
2436 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2437 else
b9671574 2438 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2439 cerry*=cerry;
2440 cerrz*=cerrz;
b9671574 2441 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2442 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2443 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2444 if (ratio<0.5) {
2445 cchi2+=(0.5-ratio)*10.;
2446 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2447 dedxmismatch+=(0.5-ratio)*10.;
2448 }
2449 }
2450 if (i<2 ||i>3){
b9671574 2451 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2452 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2453 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2454 if (i<2) chi2+=2*cl->GetDeltaProbability();
2455 }
2456 chi2+=cchi2;
2457 sum++;
2458 }
2459 }
b9671574 2460 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2461 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2462 }
2463 }
2464 else{
2465 for (Int_t i = 0;i<4;i++){
9fd412a8 2466 if (track->GetClIndex(i)>=0){
e43c066c 2467 Float_t cerry, cerrz;
2468 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2469 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2470 cerry*=cerry;
2471 cerrz*=cerrz;
b9671574 2472 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2473 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2474 sum++;
2475 }
2476 }
2477 for (Int_t i = 4;i<6;i++){
9fd412a8 2478 if (track->GetClIndex(i)>=0){
e43c066c 2479 Float_t cerry, cerrz;
2480 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2481 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2482 cerry*=cerry;
2483 cerrz*=cerrz;
2484 Float_t cerryb, cerrzb;
2485 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2486 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2487 cerryb*=cerryb;
2488 cerrzb*=cerrzb;
b9671574 2489 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2490 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2491 sum++;
2492 }
2493 }
2494 }
b9671574 2495 if (track->GetESDtrack()->GetTPCsignal()>85){
2496 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2497 if (ratio<0.5) {
2498 chi2+=(0.5-ratio)*5.;
2499 }
2500 if (ratio>2){
2501 chi2+=(ratio-2.0)*3;
2502 }
2503 }
2504 //
b9671574 2505 Double_t match = TMath::Sqrt(track->GetChi22());
2506 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2507 if (!track->GetConstrain()) {
2508 if (track->GetNumberOfClusters()>2) {
2509 match/=track->GetNumberOfClusters()-2.;
2510 } else {
2511 match=0;
2512 }
2513 }
e43c066c 2514 if (match<0) match=0;
f8720bda 2515
2516 // penalty factor for missing points (NDeadZone>0), but no penalty
2517 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2518 // or there is a dead from OCDB)
2519 Float_t deadzonefactor = 0.;
2520 if (track->GetNDeadZone()>0.) {
bf1cd124 2521 Int_t sumDeadZoneProbability=0;
2522 for(Int_t ilay=0;ilay<6;ilay++) {
2523 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2524 }
2525 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2526 if(nDeadZoneWithProbNot1>0) {
2527 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
2528 AliDebug(2,Form("nDeadZone %f sumDZProbability %f nDZWithProbNot1 %f deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
2529 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2530 Float_t one = 1.;
2531 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2532 deadzonefactor = 3.*(1.1-deadZoneProbability);
2533 }
2534 }
2535
b9671574 2536 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2537 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2538 1./(1.+track->GetNSkipped()));
bf1cd124 2539 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
2540 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2541 return normchi2;
e43c066c 2542}
44347160 2543//------------------------------------------------------------------------
a70ed6ad 2544Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2545{
2546 //
2547 // return matching chi2 between two tracks
d1181f10 2548 Double_t largeChi2=1000.;
2549
15dd636f 2550 AliITStrackMI track3(*track2);
d1181f10 2551 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2552 TMatrixD vec(5,1);
6c94f330 2553 vec(0,0)=track1->GetY() - track3.GetY();
2554 vec(1,0)=track1->GetZ() - track3.GetZ();
2555 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2556 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2557 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2558 //
2559 TMatrixD cov(5,5);
6c94f330 2560 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2561 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2562 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2563 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2564 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2565
6c94f330 2566 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2567 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2568 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2569 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2570 //
6c94f330 2571 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2572 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2573 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2574 //
6c94f330 2575 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2576 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2577 //
6c94f330 2578 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2579
2580 cov.Invert();
2581 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2582 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2583 return chi2(0,0);
2584}
44347160 2585//------------------------------------------------------------------------
a70ed6ad 2586Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2587{
2588 //
afd25725 2589 // return probability that given point (characterized by z position and error)
2590 // is in SPD dead zone
bf1cd124 2591 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2592 //
afd25725 2593 Double_t probability = 0.;
bf1cd124 2594 Double_t nearestz = 0.,distz=0.;
2595 Int_t nearestzone = -1;
2596 Double_t mindistz = 1000.;
2597
2598 // find closest dead zone
2599 for (Int_t i=0; i<3; i++) {
2600 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2601 if (distz<mindistz) {
2602 nearestzone=i;
2603 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2604 mindistz=distz;
2605 }
2606 }
2607
2608 // too far from dead zone
2609 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2610
2611
afd25725 2612 Double_t zmin, zmax;
bf1cd124 2613 if (nearestzone==0) { // dead zone at z = -7
e50912db 2614 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2615 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2616 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2617 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2618 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2619 } else if (nearestzone==2) { // dead zone at z = +7
2620 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2621 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2622 } else {
2623 zmin = 0.;
2624 zmax = 0.;
e43c066c 2625 }
afd25725 2626 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2627 // dead zone)
bb7e41dd 2628 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2629 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2630 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2631 return probability;
2632}
44347160 2633//------------------------------------------------------------------------
a70ed6ad 2634Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2635{
2636 //
2637 // calculate normalized chi2
2638 Float_t chi2[6];
2639 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2640 Float_t ncl = 0;
2641 for (Int_t i = 0;i<6;i++){
b9671574 2642 if (TMath::Abs(track->GetDy(i))>0){
2643 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2644 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2645 ncl++;
2646 }
2647 else{chi2[i]=10000;}
2648 }
2649 Int_t index[6];
2650 TMath::Sort(6,chi2,index,kFALSE);
2651 Float_t max = float(ncl)*fac-1.;
2652 Float_t sumchi=0, sumweight=0;
2653 for (Int_t i=0;i<max+1;i++){
2654 Float_t weight = (i<max)?1.:(max+1.-i);
2655 sumchi+=weight*chi2[index[i]];
2656 sumweight+=weight;
2657 }
2658 Double_t normchi2 = sumchi/sumweight;
2659 return normchi2;
2660}
44347160 2661//------------------------------------------------------------------------
a70ed6ad 2662Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2663{
2664 //
2665 // calculate normalized chi2
2666 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2667 Int_t npoints = 0;
2668 Double_t res =0;
2669 for (Int_t i=0;i<6;i++){
b9671574 2670 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2671 Double_t sy1 = forwardtrack->GetSigmaY(i);
2672 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2673 Double_t sy2 = backtrack->GetSigmaY(i);
2674 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2675 if (i<2){ sy2=1000.;sz2=1000;}
2676 //
b9671574 2677 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2678 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2679 //
2680 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2681 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2682 //
2683 res+= nz0*nz0+ny0*ny0;
2684 npoints++;
2685 }
2686 if (npoints>1) return
6c23ffed 2687 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2688 //2*forwardtrack->fNUsed+
b9671574 2689 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2690 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2691 return 1000;
2692}
44347160 2693//------------------------------------------------------------------------
e43c066c 2694Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2695 //--------------------------------------------------------------------
2696 // Return pointer to a given cluster
2697 //--------------------------------------------------------------------
2698 Int_t l=(index & 0xf0000000) >> 28;
2699 Int_t c=(index & 0x0fffffff) >> 00;
2700 return fgLayers[l].GetWeight(c);
2701}
44347160 2702//------------------------------------------------------------------------
a70ed6ad 2703void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2704{
2705 //---------------------------------------------
2706 // register track to the list
628e7bb0 2707 //
b9671574 2708 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2709 //
2710 //
e43c066c 2711 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2712 Int_t index = track->GetClusterIndex(icluster);
2713 Int_t l=(index & 0xf0000000) >> 28;
2714 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2715 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2716 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2717 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2718 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2719 break;
2720 }
2721 }
2722 }
2723}
44347160 2724//------------------------------------------------------------------------
a70ed6ad 2725void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2726{
2727 //---------------------------------------------
2728 // unregister track from the list
2729 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2730 Int_t index = track->GetClusterIndex(icluster);
2731 Int_t l=(index & 0xf0000000) >> 28;
2732 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2733 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2734 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2735 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2736 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2737 }
2738 }
2739 }
2740}
44347160 2741//------------------------------------------------------------------------
00a7cc50 2742Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2743{
2744 //-------------------------------------------------------------
2745 //get number of shared clusters
2746 //-------------------------------------------------------------
2747 Float_t shared=0;
2748 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2749 // mean number of clusters
2750 Float_t *ny = GetNy(id), *nz = GetNz(id);
2751
2752
2753 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2754 Int_t index = track->GetClusterIndex(icluster);
2755 Int_t l=(index & 0xf0000000) >> 28;
2756 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2757 if (c>fgLayers[l].GetNumberOfClusters()) continue;
88e3c173 2758 if (ny[l]<1.e-13){
e43c066c 2759 printf("problem\n");
2760 }
00a7cc50 2761 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2762 Float_t weight=1;
2763 //
2764 Float_t deltan = 0;
2765 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2766 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2767 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2768 if (l<2 || l>3){
2769 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2770 }
2771 else{
2772 deltan = (cl->GetNz()-nz[l]);
2773 }
2774 if (deltan>2.0) continue; // extended - highly probable shared cluster
2775 weight = 2./TMath::Max(3.+deltan,2.);
2776 //
2777 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2778 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2779 list[l]=index;
00a7cc50 2780 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2781 shared+=weight;
2782 break;
2783 }
2784 }
2785 }
b9671574 2786 track->SetNUsed(shared);
e43c066c 2787 return shared;
2788}
44347160 2789//------------------------------------------------------------------------
a70ed6ad 2790Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2791{
2792 //
2793 // find first shared track
2794 //
2795 // mean number of clusters
2796 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2797 //
2798 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2799 Int_t sharedtrack=100000;
2800 Int_t tracks[24],trackindex=0;
2801 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2802 //
2803 for (Int_t icluster=0;icluster<6;icluster++){
2804 if (clusterlist[icluster]<0) continue;
2805 Int_t index = clusterlist[icluster];
2806 Int_t l=(index & 0xf0000000) >> 28;
2807 Int_t c=(index & 0x0fffffff) >> 00;
88e3c173 2808 if (ny[l]<1.e-13){
e43c066c 2809 printf("problem\n");
2810 }
b9671574 2811 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2812 //if (l>3) continue;
00a7cc50 2813 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2814 //
2815 Float_t deltan = 0;
2816 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2817 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2818 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2819 if (l<2 || l>3){
2820 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2821 }
2822 else{
2823 deltan = (cl->GetNz()-nz[l]);
2824 }
2825 if (deltan>2.0) continue; // extended - highly probable shared cluster
2826 //
2827 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2828 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2829 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2830 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2831 trackindex++;
2832 }
2833 }
2834 }
2835 if (trackindex==0) return -1;
2836 if (trackindex==1){
2837 sharedtrack = tracks[0];
2838 }else{
2839 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2840 else{
2841 //
a5d0fae6 2842 Int_t tracks2[24], cluster[24];
2843 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2844 Int_t index =0;
2845 //
2846 for (Int_t i=0;i<trackindex;i++){
2847 if (tracks[i]<0) continue;
a5d0fae6 2848 tracks2[index] = tracks[i];
e43c066c 2849 cluster[index]++;
2850 for (Int_t j=i+1;j<trackindex;j++){
2851 if (tracks[j]<0) continue;
2852 if (tracks[j]==tracks[i]){
2853 cluster[index]++;
2854 tracks[j]=-1;
2855 }
2856 }
2857 index++;
2858 }
2859 Int_t max=0;
2860 for (Int_t i=0;i<index;i++){
2861 if (cluster[index]>max) {
a5d0fae6 2862 sharedtrack=tracks2[index];
e43c066c 2863 max=cluster[index];
2864 }
2865 }
2866 }
2867 }
2868
2869 if (sharedtrack>=100000) return -1;
2870 //
2871 // make list of overlaps
2872 shared =0;
2873 for (Int_t icluster=0;icluster<6;icluster++){
2874 if (clusterlist[icluster]<0) continue;
2875 Int_t index = clusterlist[icluster];
2876 Int_t l=(index & 0xf0000000) >> 28;
2877 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2878 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2879 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2880 if (l==0 || l==1){
2881 if (cl->GetNy()>2) continue;
2882 if (cl->GetNz()>2) continue;
2883 }
2884 if (l==4 || l==5){
2885 if (cl->GetNy()>3) continue;
2886 if (cl->GetNz()>3) continue;
2887 }
2888 //
2889 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2890 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2891 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2892 overlist[l]=index;
2893 shared++;
2894 }
2895 }
2896 }
2897 return sharedtrack;
2898}
44347160 2899//------------------------------------------------------------------------
15dd636f 2900AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2901 //
2902 // try to find track hypothesys without conflicts
2903 // with minimal chi2;
2904 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2905 Int_t entries1 = arr1->GetEntriesFast();
2906 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2907 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2908 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2909 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2910 //
15dd636f 2911 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2912 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2913 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2914
2915 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2916 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2917 UnRegisterClusterTracks(track,trackID1);
2918 }
2919 //
2920 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2921 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2922 UnRegisterClusterTracks(track,trackID2);
2923 }
2924 Int_t index1=0;
2925 Int_t index2=0;
2926 Float_t maxconflicts=6;
2927 Double_t maxchi2 =1000.;
2928 //
2929 // get weight of hypothesys - using best hypothesy
2930 Double_t w1,w2;
2931
2932 Int_t list1[6],list2[6];
00a7cc50 2933 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2934 RegisterClusterTracks(track10,trackID1);
2935 RegisterClusterTracks(track20,trackID2);
2936 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2937 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2938 UnRegisterClusterTracks(track10,trackID1);
2939 UnRegisterClusterTracks(track20,trackID2);
2940 //
2941 // normalized chi2
2942 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2943 Float_t nerry[6],nerrz[6];
2944 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2945 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2946 for (Int_t i=0;i<6;i++){
2947 if ( (erry1[i]>0) && (erry2[i]>0)) {
2948 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2949 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2950 }else{
2951 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2952 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2953 }
b9671574 2954 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2955 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2956 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2957 ncl1++;
2958 }
b9671574 2959 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2960 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2961 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2962 ncl2++;
2963 }
2964 }
2965 chi21/=ncl1;
2966 chi22/=ncl2;
2967 //
2968 //
b9671574 2969 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2970 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2971 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2972 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2973 //
2974 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2975 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2976 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2977 );
2978 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2979 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2980 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2981 );
2982
2983 Double_t sumw = w1+w2;
2984 w1/=sumw;
2985 w2/=sumw;
2986 if (w1<w2*0.5) {
2987 w1 = (d2+0.5)/(d1+d2+1.);
2988 w2 = (d1+0.5)/(d1+d2+1.);
2989 }
2990 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2991 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2992 //
2993 // get pair of "best" hypothesys
2994 //
2995 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2996 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2997
2998 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2999 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3000 //if (track1->fFakeRatio>0) continue;
3001 RegisterClusterTracks(track1,trackID1);
3002 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3003 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3004
3005 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3006 //if (track2->fFakeRatio>0) continue;
3007 Float_t nskipped=0;
3008 RegisterClusterTracks(track2,trackID2);
e43c066c 3009 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3010 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3011 UnRegisterClusterTracks(track2,trackID2);
3012 //
b9671574 3013 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3014 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3015 if (nskipped>0.5) continue;
3016 //
3017 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3018 if (conflict1+1<cconflict1) continue;
3019 if (conflict2+1<cconflict2) continue;
3020 Float_t conflict=0;
3021 Float_t sumchi2=0;
3022 Float_t sum=0;
3023 for (Int_t i=0;i<6;i++){
3024 //
3025 Float_t c1 =0.; // conflict coeficients
3026 Float_t c2 =0.;
3027 if (clist1[i]&&clist2[i]){
3028 Float_t deltan = 0;
3029 if (i<2 || i>3){
3030 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3031 }
3032 else{
3033 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3034 }
3035 c1 = 2./TMath::Max(3.+deltan,2.);
3036 c2 = 2./TMath::Max(3.+deltan,2.);
3037 }
3038 else{
3039 if (clist1[i]){
3040 Float_t deltan = 0;
3041 if (i<2 || i>3){
3042 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3043 }
3044 else{
3045 deltan = (clist1[i]->GetNz()-nz1[i]);
3046 }
3047 c1 = 2./TMath::Max(3.+deltan,2.);
3048 c2 = 0;
3049 }
3050
3051 if (clist2[i]){
3052 Float_t deltan = 0;
3053 if (i<2 || i>3){
3054 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3055 }
3056 else{
3057 deltan = (clist2[i]->GetNz()-nz2[i]);
3058 }
3059 c2 = 2./TMath::Max(3.+deltan,2.);
3060 c1 = 0;
3061 }
3062 }
3063 //
a5d0fae6 3064 chi21=0;chi22=0;
b9671574 3065 if (TMath::Abs(track1->GetDy(i))>0.) {
3066 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3067 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3068 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3069 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3070 }else{
b9671574 3071 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3072 }
3073 //
b9671574 3074 if (TMath::Abs(track2->GetDy(i))>0.) {
3075 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3076 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3077 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3078 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3079 }
3080 else{
b9671574 3081 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3082 }
3083 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3084 if (chi21>0) sum+=w1;
3085 if (chi22>0) sum+=w2;
3086 conflict+=(c1+c2);
3087 }
b9671574 3088 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3089 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3090 Double_t normchi2 = 2*conflict+sumchi2/sum;
3091 if ( normchi2 <maxchi2 ){
3092 index1 = itrack1;
3093 index2 = itrack2;
3094 maxconflicts = conflict;
3095 maxchi2 = normchi2;
3096 }
3097 }
3098 UnRegisterClusterTracks(track1,trackID1);
3099 }
3100 //
3101 // if (maxconflicts<4 && maxchi2<th0){
3102 if (maxchi2<th0*2.){
b9671574 3103 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3104 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3105 track1->SetChi2MIP(5,maxconflicts);
3106 track1->SetChi2MIP(6,maxchi2);
3107 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3108 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3109 track1->SetChi2MIP(8,index1);
e43c066c 3110 fBestTrackIndex[trackID1] =index1;
3111 UpdateESDtrack(track1, AliESDtrack::kITSin);
3112 }
b9671574 3113 else if (track10->GetChi2MIP(0)<th1){
3114 track10->SetChi2MIP(5,maxconflicts);
3115 track10->SetChi2MIP(6,maxchi2);
e43c066c 3116 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3117 UpdateESDtrack(track10,AliESDtrack::kITSin);
3118 }
3119
3120 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3121 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3122 UnRegisterClusterTracks(track,trackID1);
3123 }
3124 //
3125 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3126 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3127 UnRegisterClusterTracks(track,trackID2);
3128 }
3129
44347160 3130 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3131 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3132 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3133 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3134 RegisterClusterTracks(track10,trackID1);
3135 }
44347160 3136 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3137 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3138 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3139 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3140 RegisterClusterTracks(track20,trackID2);
3141 }
3142 return track10;
3143
3144}
44347160 3145//------------------------------------------------------------------------
e43c066c 3146void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3147 //--------------------------------------------------------------------
3148 // This function marks clusters assigned to the track
3149 //--------------------------------------------------------------------
3150 AliTracker::UseClusters(t,from);
3151
00a7cc50 3152 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3153 //if (c->GetQ()>2) c->Use();
3154 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3155 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3156 //if (c->GetQ()>2) c->Use();
3157 if (c->GetSigmaZ2()>0.1) c->Use();
3158
3159}
44347160 3160//------------------------------------------------------------------------
15dd636f 3161void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3162{
3163 //------------------------------------------------------------------
3164 // add track to the list of hypothesys
3165 //------------------------------------------------------------------
3166
fddf8459 3167 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3168 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3169 //
3170 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3171 if (!array) {
3172 array = new TObjArray(10);
3173 fTrackHypothesys.AddAt(array,esdindex);
3174 }
3175 array->AddLast(track);
3176}
44347160 3177//------------------------------------------------------------------------
e43c066c 3178void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3179{
3180 //-------------------------------------------------------------------
3181 // compress array of track hypothesys
3182 // keep only maxsize best hypothesys
3183 //-------------------------------------------------------------------
3184 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3185 if (! (fTrackHypothesys.At(esdindex)) ) return;
3186 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3187 Int_t entries = array->GetEntriesFast();
3188 //
3189 //- find preliminary besttrack as a reference
3190 Float_t minchi2=10000;
3191 Int_t maxn=0;
15dd636f 3192 AliITStrackMI * besttrack=0;
e43c066c 3193 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3194 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3195 if (!track) continue;
3196 Float_t chi2 = NormalizedChi2(track,0);
3197 //
b9671574 3198 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3199 track->SetLabel(tpcLabel);
3200 CookdEdx(track);
b9671574 3201 track->SetFakeRatio(1.);
e43c066c 3202 CookLabel(track,0.); //For comparison only
3203 //
44347160 3204 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3205 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3206 if (track->GetNumberOfClusters()<maxn) continue;
3207 maxn = track->GetNumberOfClusters();
3208 if (chi2<minchi2){
3209 minchi2=chi2;
3210 besttrack=track;
3211 }
3212 }
3213 else{
b9671574 3214 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3215 delete array->RemoveAt(itrack);
3216 }
e43c066c 3217 }
3218 }
3219 if (!besttrack) return;
3220 //
3221 //
3222 //take errors of best track as a reference
3223 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3224 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3225 for (Int_t j=0;j<6;j++) {
9fd412a8 3226 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3227 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3228 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3229 ny[j] = besttrack->GetNy(j);
3230 nz[j] = besttrack->GetNz(j);
e43c066c 3231 }
3232 }
3233 //
3234 // calculate normalized chi2
3235 //
3236 Float_t * chi2 = new Float_t[entries];
3237 Int_t * index = new Int_t[entries];
3238 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3239 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3240 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3241 if (track){
bf1cd124 3242 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
b9671574 3243 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3244 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3245 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3246 else{
b9671574 3247 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3248 delete array->RemoveAt(itrack);
3249 }
3250 }
e43c066c 3251 }
3252 }
3253 //
3254 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3255 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3256 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3257 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3258 for (Int_t j=0;j<6;j++){
9fd412a8 3259 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3260 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3261 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3262 ny[j] = besttrack->GetNy(j);
3263 nz[j] = besttrack->GetNz(j);
e43c066c 3264 }
3265 }
3266 }
3267 //
3268 // calculate one more time with updated normalized errors
3269 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3270 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3271 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3272 if (track){
bf1cd124 3273 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3274 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
44347160 3275 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3276 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3277 else
3278 {
b9671574 3279 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3280 delete array->RemoveAt(itrack);
3281 }
3282 }
e43c066c 3283 }
3284 }
3285 entries = array->GetEntriesFast();
3286 //
628e7bb0 3287 //
e43c066c 3288 if (entries>0){
3289 TObjArray * newarray = new TObjArray();
3290 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3291 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3292 if (besttrack){
bf1cd124 3293 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3294 //
a5d0fae6 3295 for (Int_t j=0;j<6;j++){
3296 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3297 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3298 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3299 ny[j] = besttrack->GetNy(j);
3300 nz[j] = besttrack->GetNz(j);
e43c066c 3301 }
3302 }
b9671574 3303 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3304 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3305 Float_t minn = besttrack->GetNumberOfClusters()-3;
3306 Int_t accepted=0;
3307 for (Int_t i=0;i<entries;i++){
15dd636f 3308 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3309 if (!track) continue;
3310 if (accepted>maxcut) break;
b9671574 3311 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3312 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3313 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3314 delete array->RemoveAt(index[i]);
3315 continue;
3316 }
e43c066c 3317 }
b9671574 3318 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3319 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3320 if (!shortbest) accepted++;
e43c066c 3321 //
3322 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3323 for (Int_t j=0;j<6;j++){
3324 if (nz[j]==0){
3325 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3326 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3327 ny[j] = track->GetNy(j);
3328 nz[j] = track->GetNz(j);
e43c066c 3329 }
3330 }
3331 }
3332 else{
3333 delete array->RemoveAt(index[i]);
3334 }
3335 }
3336 array->Delete();
3337 delete fTrackHypothesys.RemoveAt(esdindex);
3338 fTrackHypothesys.AddAt(newarray,esdindex);
3339 }
3340 else{
3341 array->Delete();
3342 delete fTrackHypothesys.RemoveAt(esdindex);
3343 }
3344 }
3345 delete [] chi2;
3346 delete [] index;
3347}
44347160 3348//------------------------------------------------------------------------
15dd636f 3349AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3350{
3351 //-------------------------------------------------------------
3352 // try to find best hypothesy
3353 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3354 //-------------------------------------------------------------
3355 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3356 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3357 if (!array) return 0;
3358 Int_t entries = array->GetEntriesFast();
3359 if (!entries) return 0;
3360 Float_t minchi2 = 100000;
15dd636f 3361 AliITStrackMI * besttrack=0;
e43c066c 3362 //
15dd636f 3363 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3364 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3365 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3366 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3367 //
3368 for (Int_t i=0;i<entries;i++){
15dd636f 3369 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3370 if (!track) continue;
628e7bb0 3371 Float_t sigmarfi,sigmaz;
3372 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3373 track->SetDnorm(0,sigmarfi);
3374 track->SetDnorm(1,sigmaz);
628e7bb0 3375 //
b9671574 3376 track->SetChi2MIP(1,1000000);
3377 track->SetChi2MIP(2,1000000);
3378 track->SetChi2MIP(3,1000000);
e43c066c 3379 //
3380 // backtrack
15dd636f 3381 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3382 if (track->GetConstrain()) {
e50912db 3383 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
afd25725 3384 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
6c94f330 3385 backtrack->ResetCovariance(10.);
628e7bb0 3386 }else{
6c94f330 3387 backtrack->ResetCovariance(10.);
628e7bb0 3388 }
e43c066c 3389 backtrack->ResetClusters();
628e7bb0 3390
e43c066c 3391 Double_t x = original->GetX();
3392 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3393 //
b9671574 3394 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3395 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3396 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3397 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3398
b9671574 3399 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3400 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3401 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3402
3403
44347160 3404 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3405 //
3406 //forward track - without constraint
15dd636f 3407 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3408 forwardtrack->ResetClusters();
3409 x = track->GetX();
628e7bb0 3410 RefitAt(x,forwardtrack,track);
b9671574 3411 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3412 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3413 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3414
791f9a2a 3415 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3416 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3417 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3418 forwardtrack->SetD(0,track->GetD(0));
3419 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3420 {
3421 Int_t list[6];
00a7cc50 3422 AliITSRecPoint* clist[6];
b9671574 3423 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3424 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3425 }
3426
b9671574 3427 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3428 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3429 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3430 track->SetChi2MIP(3,1000);
e43c066c 3431 continue;
3432 }
b9671574 3433 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3434 //
3435 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3436 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3437 }
3438 if (chi2 < minchi2){
15dd636f 3439 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3440 besttrack = track;
e43c066c 3441 besttrack->SetLabel(track->GetLabel());
b9671574 3442 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3443 minchi2 = chi2;
791f9a2a 3444 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3445 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3446 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3447 }
3448 }
3449 delete backtrack;
3450 delete forwardtrack;
3451 Int_t accepted=0;
3452 for (Int_t i=0;i<entries;i++){
fddf8459 3453 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3454
e43c066c 3455 if (!track) continue;
628e7bb0 3456
44347160 3457 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3458 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3459 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3460 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3461 delete array->RemoveAt(i);
3462 continue;
3463 }
e43c066c 3464 }
3465 else{
3466 accepted++;
3467 }
3468 }
3469 //
3470 array->Compress();
3471 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3472
e43c066c 3473 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3474 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3475 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3476 if (!besttrack) return 0;
b9671574 3477 besttrack->SetChi2MIP(8,0);
e43c066c 3478 fBestTrackIndex[esdindex]=0;
3479 entries = array->GetEntriesFast();
15dd636f 3480 AliITStrackMI *longtrack =0;
e43c066c 3481 minchi2 =1000;
b9671574 3482 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3483 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3484 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3485 if (!track->GetConstrain()) continue;
3486 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3487 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3488 if (track->GetChi2MIP(0)>4.) continue;
3489 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3490 longtrack =track;
3491 }
3492 //if (longtrack) besttrack=longtrack;
3493
3494 Int_t list[6];
00a7cc50 3495 AliITSRecPoint * clist[6];
e43c066c 3496 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3497 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3498 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3499 RegisterClusterTracks(besttrack,esdindex);
3500 }
3501 //
3502 //
3503 if (shared>0.0){
3504 Int_t nshared;
3505 Int_t overlist[6];
3506 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3507 if (sharedtrack>=0){
3508 //
3509 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3510 if (besttrack){
3511 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3512 }
3513 else return 0;
3514 }
3515 }
3516
3517 if (shared>2.5) return 0;
3518 if (shared>1.0) return besttrack;
3519 //
628e7bb0 3520 // Don't sign clusters if not gold track
3521 //
3522 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3523 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3524 //
e43c066c 3525 if (fConstraint[fPass]){
3526 //
3527 // sign clusters
3528 //
3529 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3530 for (Int_t i=0;i<6;i++){
b9671574 3531 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3532 if (index<0) continue;
e43c066c 3533 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3534 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3535 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3536 if (!c) continue;
3537 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3538 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3539 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3540 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3541 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3542 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3543
3544 Bool_t cansign = kTRUE;
3545 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3546 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3547 if (!track) continue;
b9671574 3548 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3549 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3550 cansign = kFALSE;
3551 break;
3552 }
3553 }
3554 if (cansign){
b9671574 3555 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3556 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3557 if (!c->IsUsed()) c->Use();
3558 }
3559 }
3560 }
3561 return besttrack;
3562}
44347160 3563//------------------------------------------------------------------------
e43c066c 3564void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3565{
3566 //
3567 // get "best" hypothesys
628e7bb0 3568 //
e43c066c 3569
3570 Int_t nentries = itsTracks.GetEntriesFast();
3571 for (Int_t i=0;i<nentries;i++){
15dd636f 3572 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3573 if (!track) continue;
3574 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3575 if (!array) continue;
3576 if (array->GetEntriesFast()<=0) continue;
3577 //
15dd636f 3578 AliITStrackMI* longtrack=0;
e43c066c 3579 Float_t minn=0;
3580 Float_t maxchi2=1000;
3581 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3582 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3583 if (!trackHyp) continue;
3584 if (trackHyp->GetGoldV0()) {
3585 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3586 break;
3587 }
a5d0fae6 3588 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3589 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3590 if (fAfterV0){
a5d0fae6 3591 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3592 }
a5d0fae6 3593 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3594 //
3595 if (chi2 > maxchi2) continue;
a5d0fae6 3596 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3597 maxchi2 = chi2;
a5d0fae6 3598 longtrack=trackHyp;
e43c066c 3599 }
628e7bb0 3600 //
3601 //
3602 //
15dd636f 3603 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3604 if (!longtrack) {longtrack = besttrack;}
3605 else besttrack= longtrack;
628e7bb0 3606 //
afd25725 3607 if (besttrack) {
e43c066c 3608 Int_t list[6];
00a7cc50 3609 AliITSRecPoint * clist[6];
e43c066c 3610 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3611 //
b9671574 3612 track->SetNUsed(shared);
3613 track->SetNSkipped(besttrack->GetNSkipped());
3614 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3615 if (shared>0) {
3616 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3617 Int_t nshared;
3618 Int_t overlist[6];
3619 //
3620 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3621 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3622 if (sharedtrack>=0) {
e43c066c 3623 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3624 }
3625 }
afd25725 3626 if (besttrack&&fAfterV0) {
628e7bb0 3627 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3628 }
e43c066c 3629 if (besttrack&&fConstraint[fPass])
3630 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3631 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3632 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3633 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3634 }
3635
3636 }
3637 }
3638}
44347160 3639//------------------------------------------------------------------------
15dd636f 3640void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3641 //--------------------------------------------------------------------
3642 //This function "cooks" a track label. If label<0, this track is fake.
3643 //--------------------------------------------------------------------
3644 Int_t tpcLabel=-1;
3645
d3dbf323 3646 if (track->GetESDtrack()){
3647 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3648 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3649 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3650 }
b9671574 3651 track->SetChi2MIP(9,0);
e43c066c 3652 Int_t nwrong=0;
3653 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3654 Int_t cindex = track->GetClusterIndex(i);
3655 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3656 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3657 Int_t isWrong=1;
3658 for (Int_t ind=0;ind<3;ind++){
84a21804 3659 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 3660 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3661 }
b9671574 3662 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3663 nwrong+=isWrong;
3664 }
7d43b4c4 3665 Int_t nclusters = track->GetNumberOfClusters();
3666 if (nclusters > 0) //PH Some tracks don't have any cluster
3667 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 3668 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
3669 track->SetLabel(-tpcLabel);
3670 } else {
3671 track->SetLabel(tpcLabel);
e43c066c 3672 }
9be1d1c7 3673 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3674
3675}
44347160 3676//------------------------------------------------------------------------
88e3c173 3677void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
3678 //
3679 // Fill the dE/dx in this track
e43c066c 3680 //
b9671574 3681 track->SetChi2MIP(9,0);
e43c066c 3682 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3683 Int_t cindex = track->GetClusterIndex(i);
3684 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3685 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3686 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3687 Int_t isWrong=1;
3688 for (Int_t ind=0;ind<3;ind++){
3689 if (cl->GetLabel(ind)==lab) isWrong=0;
3690 }
b9671574 3691 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3692 }
e43c066c 3693 Double_t low=0.;
3694 Double_t up=0.51;
09cf9d66 3695 track->CookdEdx(low,up);
e43c066c 3696}
44347160 3697//------------------------------------------------------------------------
e50912db 3698void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3699 //
a70ed6ad 3700 // Create some arrays
e43c066c 3701 //
afd25725 3702 if (fCoefficients) delete []fCoefficients;
3703 fCoefficients = new Float_t[ntracks*48];
3704 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3705}
44347160 3706//------------------------------------------------------------------------
00a7cc50 3707Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3708{
3709 //
a70ed6ad 3710 // Compute predicted chi2
e43c066c 3711 //
d9ead1a0 3712 Float_t erry,errz,covyz;
e43c066c 3713 Float_t theta = track->GetTgl();
3714 Float_t phi = track->GetSnp();
60e55aee 3715 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 3716 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 3717 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 3718 // Take into account the mis-alignment (bring track to cluster plane)
3719 Double_t xTrOrig=track->GetX();
9be1d1c7 3720 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
4187a601 3721 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
d9ead1a0 3722 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 3723 // Bring the track back to detector plane in ideal geometry
3724 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3725 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3726 Float_t ny,nz;
e50912db 3727 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3728 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3729 if (delta>1){
3730 chi2+=0.5*TMath::Min(delta/2,2.);
3731 chi2+=2.*cluster->GetDeltaProbability();
3732 }
3733 //
b9671574 3734 track->SetNy(layer,ny);
3735 track->SetNz(layer,nz);
3736 track->SetSigmaY(layer,erry);
3737 track->SetSigmaZ(layer, errz);
d9ead1a0 3738 track->SetSigmaYZ(layer,covyz);
e43c066c 3739 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3740 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3741 return chi2;
3742
3743}
e50912db 3744//------------------------------------------------------------------------
3745Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3746{
3747 //
a70ed6ad 3748 // Update ITS track
e43c066c 3749 //
3750 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3751 track->SetClIndex(layer, index);
572f41f9 3752 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3753 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3754 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3755 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3756 }
e43c066c 3757 }
a504d56f 3758
88e3c173 3759 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 3760
afd25725 3761
1c97ce2f 3762 // Take into account the mis-alignment (bring track to cluster plane)
3763 Double_t xTrOrig=track->GetX();
4187a601 3764 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3765 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3766 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3767 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3768
9be1d1c7 3769 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 3770
150f264c 3771 AliCluster c(*cl);
3772 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3773 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 3774 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 3775
1c97ce2f 3776
3777 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 3778 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3779 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 3780
4187a601 3781 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3782 return updated;
e43c066c 3783}
150f264c 3784
44347160 3785//------------------------------------------------------------------------
a70ed6ad 3786void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3787{
3788 //
3789 //DCA sigmas parameterization
3790 //to be paramterized using external parameters in future
3791 //
3792 //
afd25725 3793 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3794 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3795}
e50912db 3796//------------------------------------------------------------------------
a70ed6ad 3797void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3798{
3799 //
a70ed6ad 3800 // Clusters from delta electrons?
e43c066c 3801 //
a70ed6ad 3802 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3803 if (entries<4) return;
a70ed6ad 3804 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3805 Int_t layer = cluster->GetLayer();
3806 if (layer>1) return;
3807 Int_t index[10000];
3808 Int_t ncandidates=0;
3809 Float_t r = (layer>0)? 7:4;
3810 //
3811 for (Int_t i=0;i<entries;i++){
a70ed6ad 3812 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3813 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3814 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3815 index[ncandidates] = i; //candidate to belong to delta electron track
3816 ncandidates++;
3817 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3818 cl0->SetDeltaProbability(1);
3819 }
3820 }
3821 //
3822 //
3823 //
3824 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3825 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3826 if (cl0->GetDeltaProbability()>0.8) continue;
3827 //
3828 Int_t ncl = 0;
3829 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3830 sumy=sumz=sumy2=sumyz=sumw=0.0;
3831 for (Int_t j=0;j<ncandidates;j++){
3832 if (i==j) continue;
a70ed6ad 3833 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3834 //
3835 Float_t dz = cl0->GetZ()-cl1->GetZ();
3836 Float_t dy = cl0->GetY()-cl1->GetY();
3837 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3838 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3839 y[ncl] = cl1->GetY();
3840 z[ncl] = cl1->GetZ();
3841 sumy+= y[ncl]*weight;
3842 sumz+= z[ncl]*weight;
3843 sumy2+=y[ncl]*y[ncl]*weight;
3844 sumyz+=y[ncl]*z[ncl]*weight;
3845 sumw+=weight;
3846 ncl++;
3847 }
3848 }
3849 if (ncl<4) continue;
3850 Float_t det = sumw*sumy2 - sumy*sumy;
3851 Float_t delta=1000;
3852 if (TMath::Abs(det)>0.01){
3853 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3854 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3855 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3856 }
3857 else{
3858 Float_t z0 = sumyz/sumy;
3859 delta = TMath::Abs(cl0->GetZ()-z0);
3860 }
3861 if ( delta<0.05) {
3862 cl0->SetDeltaProbability(1-20.*delta);
3863 }
3864 }
3865}
44347160 3866//------------------------------------------------------------------------
15dd636f 3867void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3868{
3869 //
a70ed6ad 3870 // Update ESD track
e43c066c 3871 //
3872 track->UpdateESDtrack(flags);
b9671574 3873 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3874 if (oldtrack) delete oldtrack;
b9671574 3875 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3876 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
628e7bb0 3877 printf("Problem\n");
3878 }
e43c066c 3879}
44347160 3880//------------------------------------------------------------------------
81e97e0d 3881Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3882 //
ae00569a 3883 // Get nearest upper layer close to the point xr.
81e97e0d 3884 // rough approximation
3885 //
bf6adc12 3886 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3887 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3888 Int_t res =6;
3889 for (Int_t i=0;i<6;i++){
bf6adc12 3890 if (radius<kRadiuses[i]){
81e97e0d 3891 res =i;
3892 break;
3893 }
3894 }
3895 return res;
3896}
44347160 3897//------------------------------------------------------------------------
e50912db 3898void AliITStrackerMI::BuildMaterialLUT(TString material) {
3899 //--------------------------------------------------------------------
3900 // Fill a look-up table with mean material
3901 //--------------------------------------------------------------------
3902
3903 Int_t n=1000;
3904 Double_t mparam[7];
3905 Double_t point1[3],point2[3];
3906 Double_t phi,cosphi,sinphi,z;
3907 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3908 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3909 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3910
3911 Int_t ifirst=0,ilast=0;
3912 if(material.Contains("Pipe")) {
3913 ifirst=6; ilast=6;
3914 } else if(material.Contains("Shields")) {
3915 ifirst=7; ilast=8;
3916 } else if(material.Contains("Layers")) {
3917 ifirst=0; ilast=5;
3918 } else {
3919 Error("BuildMaterialLUT","Wrong layer name\n");
3920 }
3921
3922 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3923 Double_t param[5]={0.,0.,0.,0.,0.};
3924 for (Int_t i=0; i<n; i++) {
3925 phi = 2.*TMath::Pi()*gRandom->Rndm();
3926 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3927 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3928 point1[0] = rmin[imat]*cosphi;
3929 point1[1] = rmin[imat]*sinphi;
3930 point1[2] = z;
3931 point2[0] = rmax[imat]*cosphi;
3932 point2[1] = rmax[imat]*sinphi;
3933 point2[2] = z;
3934 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3935 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3936 }
3937 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3938 if(imat<=5) {
3939 fxOverX0Layer[imat] = param[1];
3940 fxTimesRhoLayer[imat] = param[0]*param[4];
3941 } else if(imat==6) {
3942 fxOverX0Pipe = param[1];
3943 fxTimesRhoPipe = param[0]*param[4];
3944 } else if(imat==7) {
3945 fxOverX0Shield[0] = param[1];
3946 fxTimesRhoShield[0] = param[0]*param[4];
3947 } else if(imat==8) {
3948 fxOverX0Shield[1] = param[1];
3949 fxTimesRhoShield[1] = param[0]*param[4];
3950 }
3951 }
3952 /*
3953 printf("%s\n",material.Data());
3954 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3955 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3956 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3957 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3958 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3959 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3960 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3961 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3962 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3963 */
3964 return;
3965}
3966//------------------------------------------------------------------------
3967Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3968 TString direction) {
3969 //-------------------------------------------------------------------
3970 // Propagate beyond beam pipe and correct for material
3971 // (material budget in different ways according to fUseTGeo value)
7131593b 3972 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 3973 //-------------------------------------------------------------------
3974
3975 // Define budget mode:
3976 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 3977 // 1: material from TGeo in one step (on the fly)
e50912db 3978 // 2: material from lut
9be1d1c7 3979 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 3980 Int_t mode;
3981 switch(fUseTGeo) {
3982 case 0:
3983 mode=0;
3984 break;
3985 case 1:
3986 mode=1;
3987 break;
3988 case 2:
3989 mode=2;
3990 break;
3991 case 3:
3992 if(fTrackingPhase.Contains("Clusters2Tracks"))
3993 { mode=3; } else { mode=1; }
3994 break;
3995 case 4:
3996 if(fTrackingPhase.Contains("Clusters2Tracks"))
3997 { mode=3; } else { mode=2; }
3998 break;
3999 default:
4000 mode=0;
4001 break;
4002 }
4003 if(fTrackingPhase.Contains("Default")) mode=0;
4004
4005 Int_t index=fCurrentEsdTrack;
4006
4007 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4008 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4009 Double_t xToGo;
4010 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4011
4012 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4013
4014 switch(mode) {
4015 case 0:
4016 xOverX0 = AliITSRecoParam::GetdPipe();
4017 x0 = AliITSRecoParam::GetX0Be();
4018 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4019 lengthTimesMeanDensity *= dir;
7131593b 4020 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4021 break;
4022 case 1:
4023 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4024 break;
4025 case 2:
4026 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4027 xOverX0 = fxOverX0Pipe;
4028 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4029 lengthTimesMeanDensity *= dir;
7131593b 4030 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4031 break;
4032 case 3:
4033 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4034 if(fxOverX0PipeTrks[index]<0) {
4035 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4036 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4037 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4038 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4039 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4040 return 1;
4041 }
4042 xOverX0 = fxOverX0PipeTrks[index];
4043 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4044 lengthTimesMeanDensity *= dir;
7131593b 4045 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4046 break;
4047 }
4048
e50912db 4049 return 1;
4050}
4051//------------------------------------------------------------------------
4052Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4053 TString shield,
4054 TString direction) {
4055 //-------------------------------------------------------------------
4056 // Propagate beyond SPD or SDD shield and correct for material
4057 // (material budget in different ways according to fUseTGeo value)
7131593b 4058 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4059 //-------------------------------------------------------------------
4060
4061 // Define budget mode:
4062 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4063 // 1: material from TGeo in steps of X cm (on the fly)
4064 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4065 // 2: material from lut
9be1d1c7 4066 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4067 Int_t mode;
4068 switch(fUseTGeo) {
4069 case 0:
4070 mode=0;
4071 break;
4072 case 1:
4073 mode=1;
4074 break;
4075 case 2:
4076 mode=2;
4077 break;
4078 case 3:
4079 if(fTrackingPhase.Contains("Clusters2Tracks"))
4080 { mode=3; } else { mode=1; }
4081 break;
4082 case 4:
4083 if(fTrackingPhase.Contains("Clusters2Tracks"))
4084 { mode=3; } else { mode=2; }
4085 break;
4086 default:
4087 mode=0;
4088 break;
4089 }
4090 if(fTrackingPhase.Contains("Default")) mode=0;
4091
4092 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4093 Double_t rToGo;
4094 Int_t shieldindex=0;
4095 if (shield.Contains("SDD")) { // SDDouter
4096 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4097 shieldindex=1;
4098 } else if (shield.Contains("SPD")) { // SPDouter
4099 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4100 shieldindex=0;
4101 } else {
4102 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4103 return 0;
4104 }
67178f34 4105
4106 // do nothing if we are already beyond the shield
4107 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4108 if(dir<0 && rTrack > rToGo) return 1; // going outward
4109 if(dir>0 && rTrack < rToGo) return 1; // going inward
4110
4111
70e83b26 4112 Double_t xToGo;
4113 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4114
4115 Int_t index=2*fCurrentEsdTrack+shieldindex;
4116
4117 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4118 Int_t nsteps=1;
e50912db 4119
4120 switch(mode) {
4121 case 0:
4122 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4123 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4124 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4125 lengthTimesMeanDensity *= dir;
7131593b 4126 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4127 break;
4128 case 1:
9be1d1c7 4129 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4130 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4131 break;
4132 case 2:
4133 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4134 xOverX0 = fxOverX0Shield[shieldindex];
4135 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4136 lengthTimesMeanDensity *= dir;
7131593b 4137 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4138 break;
4139 case 3:
4140 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4141 if(fxOverX0ShieldTrks[index]<0) {
4142 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4143 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4144 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4145 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4146 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4147 return 1;
4148 }
4149 xOverX0 = fxOverX0ShieldTrks[index];
4150 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4151 lengthTimesMeanDensity *= dir;
7131593b 4152 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4153 break;
4154 }
4155
e50912db 4156 return 1;
4157}
4158//------------------------------------------------------------------------
4159Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4160 Int_t layerindex,
4161 Double_t oldGlobXYZ[3],
4162 TString direction) {
4163 //-------------------------------------------------------------------
4164 // Propagate beyond layer and correct for material
4165 // (material budget in different ways according to fUseTGeo value)
7131593b 4166 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4167 //-------------------------------------------------------------------
4168
4169 // Define budget mode:
4170 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4171 // 1: material from TGeo in stepsof X cm (on the fly)
4172 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4173 // 2: material from lut
9be1d1c7 4174 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4175 Int_t mode;
4176 switch(fUseTGeo) {
4177 case 0:
4178 mode=0;
4179 break;
4180 case 1:
4181 mode=1;
4182 break;
4183 case 2:
4184 mode=2;
4185 break;
4186 case 3:
4187 if(fTrackingPhase.Contains("Clusters2Tracks"))
4188 { mode=3; } else { mode=1; }
4189 break;
4190 case 4:
4191 if(fTrackingPhase.Contains("Clusters2Tracks"))
4192 { mode=3; } else { mode=2; }
4193 break;
4194 default:
4195 mode=0;
4196 break;
4197 }
4198 if(fTrackingPhase.Contains("Default")) mode=0;
4199
4200 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4201
4202 Double_t r=fgLayers[layerindex].GetR();
4203 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4204
4205 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4206 Double_t xToGo;
4207 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4208
4209 Int_t index=6*fCurrentEsdTrack+layerindex;
4210
e50912db 4211
4212 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4213 Int_t nsteps=1;
7131593b 4214
4215 // back before material (no correction)
d634c32b 4216 Double_t rOld,xOld;
7131593b 4217 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4218 if (!t->GetLocalXat(rOld,xOld)) return 0;
4219 if (!t->Propagate(xOld)) return 0;
e50912db 4220
4221 switch(mode) {
4222 case 0:
4223 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4224 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4225 lengthTimesMeanDensity *= dir;
7131593b 4226 // Bring the track beyond the material
4227 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4228 break;
4229 case 1:
9be1d1c7 4230 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4231 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4232 break;
4233 case 2:
4234 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4235 xOverX0 = fxOverX0Layer[layerindex];
4236 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4237 lengthTimesMeanDensity *= dir;
7131593b 4238 // Bring the track beyond the material
4239 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4240 break;
4241 case 3:
4242 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4243 if(fxOverX0LayerTrks[index]<0) {
4244 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4245 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4246 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4247 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4248 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4249 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4250 return 1;
e50912db 4251 }
4252 xOverX0 = fxOverX0LayerTrks[index];
4253 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4254 lengthTimesMeanDensity *= dir;
7131593b 4255 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4256 break;
4257 }
4258
7131593b 4259
e50912db 4260 return 1;
4261}
4262//------------------------------------------------------------------------
4263void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4264 //-----------------------------------------------------------------
4265 // Initialize LUT for storing material for each prolonged track
4266 //-----------------------------------------------------------------
4267 fxOverX0PipeTrks = new Float_t[ntracks];
4268 fxTimesRhoPipeTrks = new Float_t[ntracks];
4269 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4270 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4271 fxOverX0LayerTrks = new Float_t[ntracks*6];
4272 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4273
4274 for(Int_t i=0; i<ntracks; i++) {
4275 fxOverX0PipeTrks[i] = -1.;
4276 fxTimesRhoPipeTrks[i] = -1.;
4277 }
4278 for(Int_t j=0; j<ntracks*2; j++) {
4279 fxOverX0ShieldTrks[j] = -1.;
4280 fxTimesRhoShieldTrks[j] = -1.;
4281 }
4282 for(Int_t k=0; k<ntracks*6; k++) {
4283 fxOverX0LayerTrks[k] = -1.;
4284 fxTimesRhoLayerTrks[k] = -1.;
4285 }
4286
4287 fNtracks = ntracks;
4288
4289 return;
4290}
4291//------------------------------------------------------------------------
4292void AliITStrackerMI::DeleteTrksMaterialLUT() {
4293 //-----------------------------------------------------------------
4294 // Delete LUT for storing material for each prolonged track
4295 //-----------------------------------------------------------------
4296 if(fxOverX0PipeTrks) {
4297 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4298 }
4299 if(fxOverX0ShieldTrks) {
4300 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4301 }
4302
4303 if(fxOverX0LayerTrks) {
4304 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4305 }
4306 if(fxTimesRhoPipeTrks) {
4307 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4308 }
4309 if(fxTimesRhoShieldTrks) {
4310 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4311 }
4312 if(fxTimesRhoLayerTrks) {
4313 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4314 }
4315 return;
4316}
4317//------------------------------------------------------------------------
4fa7f7d1 4318void AliITStrackerMI::SetForceSkippingOfLayer() {
4319 //-----------------------------------------------------------------
4320 // Check if we are forced to skip layers
4321 // either we set to skip them in RecoParam
4322 // or they were off during data-taking
4323 //-----------------------------------------------------------------
4324
4325 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4326
4fa7f7d1 4327 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4328 fForceSkippingOfLayer[l] = 0;
4329 // check reco param
4330 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4331 // check run info
4332
87b4605f 4333 if(eventInfo &&
4334 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4335 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4336 if(l==0 || l==1) {
4337 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4338 } else if(l==2 || l==3) {
4339 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4340 } else {
4341 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4342 }
4343 }
4344 }
4345 return;
4346}
4347//------------------------------------------------------------------------
a70ed6ad 4348Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4349 Int_t ilayer,Int_t idet) const {
2755f080 4350 //-----------------------------------------------------------------
4351 // This method is used to decide whether to allow a prolongation
4352 // without clusters, because we want to skip the layer.
4353 // In this case the return value is > 0:
4354 // return 1: the user requested to skip a layer
371164ec 4355 // return 2: track outside z acceptance
2755f080 4356 //-----------------------------------------------------------------
e43c066c 4357
4fa7f7d1 4358 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4359
371164ec 4360 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4361
4362 if (idet<0 && // out in z
4363 ilayer>innerLayCanSkip &&
4364 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4365 // check if track will cross SPD outer layer
4366 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4367 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4368 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4369 }
371164ec 4370 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4371 }
51ad6848 4372
2755f080 4373 return 0;
4374}
4375//------------------------------------------------------------------------
23197852 4376Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4377 Int_t ilayer,Int_t idet,
1c97ce2f 4378 Double_t dz,Double_t dy,
23197852 4379 Bool_t noClusters) const {
6518a6c5 4380 //-----------------------------------------------------------------
4381 // This method is used to decide whether to allow a prolongation
ae00569a 4382 // without clusters, because there is a dead zone in the road.
6518a6c5 4383 // In this case the return value is > 0:
4384 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4385 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4386 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4387 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4388 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4389 //-----------------------------------------------------------------
4390
4391 // check dead zones at z=0,+-7cm in the SPD
4392 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4393 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4394 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4395 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4396 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4397 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4398 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4399 for (Int_t i=0; i<3; i++)
4187a601 4400 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4401 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4402 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4403 }
6518a6c5 4404 }
4405
23197852 4406 // check bad zones from OCDB
4407 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4408
23197852 4409 if (idet<0) return 0;
ae00569a 4410
23197852 4411 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4412
23197852 4413 Int_t detType=-1;
4414 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4415 if (ilayer==0 || ilayer==1) { // ---------- SPD
4416 detType = 0;
4417 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4418 detType = 1;
4419 detSizeFactorX *= 2.;
4420 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4421 detType = 2;
4422 }
a70ed6ad 4423 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4424 if (detType==2) segm->SetLayer(ilayer+1);
4425 Float_t detSizeX = detSizeFactorX*segm->Dx();
4426 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4427
4428 // check if the road overlaps with bad chips
4429 Float_t xloc,zloc;
4187a601 4430 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4431 Float_t zlocmin = zloc-dz;
4432 Float_t zlocmax = zloc+dz;
4433 Float_t xlocmin = xloc-dy;
4434 Float_t xlocmax = xloc+dy;
23197852 4435 Int_t chipsInRoad[100];
4436
4187a601 4437 // check if road goes out of detector
4438 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4439 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4440 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4441 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4442 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4443 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));
4444
4445 // check if this detector is bad
4446 if (det.IsBad()) {
4447 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4448 if(!touchNeighbourDet) {
4449 return 2; // all detectors in road are bad
4450 } else {
4451 return 3; // at least one is bad
4452 }
4453 }
4454
23197852 4455 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4456 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4457 if (!nChipsInRoad) return 0;
4458
4459 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4460 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4461 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4462 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4463 if (det.IsChipBad(chipsInRoad[iCh])) {
4464 anyBad=kTRUE;
4465 } else {
4466 anyGood=kTRUE;
4467 }
6518a6c5 4468 }
4469
4187a601 4470 if (!anyGood) {
4471 if(!touchNeighbourDet) {
4472 AliDebug(2,"all bad in road");
4473 return 2; // all chips in road are bad
4474 } else {
4475 return 3; // at least a bad chip in road
4476 }
4477 }
23197852 4478
4187a601 4479 if (anyBad) {
4480 AliDebug(2,"at least a bad in road");
4481 return 3; // at least a bad chip in road
4482 }
23197852 4483
4484
4485 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4486 || !noClusters) return 0;
4487
4488 // There are no clusters in road: check if there is at least
6a0fdcbd 4489 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4490
4187a601 4491 Int_t idetInITS=idet;
4492 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4493
4187a601 4494 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4495 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4496 return 4;
4187a601 4497 }
4498 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4499
6518a6c5 4500 return 0;
4501}
4502//------------------------------------------------------------------------
ae00569a 4503Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4504 const AliITStrackMI *track,
ae00569a 4505 Float_t &xloc,Float_t &zloc) const {
4506 //-----------------------------------------------------------------
4507 // Gives position of track in local module ref. frame
4508 //-----------------------------------------------------------------
4509
4510 xloc=0.;
4511 zloc=0.;
4512
371164ec 4513 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4514
4515 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4516
4517 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4518
ae00569a 4519 Int_t det = idet - (lad-1)*ndet + 1;
4520
4521 Double_t xyzGlob[3],xyzLoc[3];
4522
1c97ce2f 4523 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4524 // take into account the misalignment: xyz at real detector plane
d1181f10 4525 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4526
d1181f10 4527 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4528
4529 xloc = (Float_t)xyzLoc[0];
4530 zloc = (Float_t)xyzLoc[2];
4531
4532 return kTRUE;
4533}
4534//------------------------------------------------------------------------
a70ed6ad 4535Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4536//
4537// Method to be optimized further:
4538// Aim: decide whether a track can be used for PlaneEff evaluation
4539// the decision is taken based on the track quality at the layer under study
4540// no information on the clusters on this layer has to be used
4541// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4542// the cut is done on number of sigmas from the boundaries
4543//
4544// Input: Actual track, layer [0,5] under study
4545// Output: none
4546// Return: kTRUE if this is a good track
7167ae53 4547//
4548// it will apply a pre-selection to obtain good quality tracks.
4549// Here also you will have the possibility to put a control on the
4550// impact point of the track on the basic block, in order to exclude border regions
4551// this will be done by calling a proper method of the AliITSPlaneEff class.
4552//
4553// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4554// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4555//
4556 Int_t index[AliITSgeomTGeo::kNLayers];
4557 Int_t k;
4558 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4559 //
4560 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4561 index[k]=clusters[k];
4562 }
4563
0e91092f 4564 if(!fPlaneEff)
a31a139f 4565 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4566 AliITSlayer &layer=fgLayers[ilayer];
4567 Double_t r=layer.GetR();
8a32c4b5 4568 AliITStrackMI tmp(*track);
4569
0ed58a47 4570// require a minimal number of cluster in other layers and eventually clusters in closest layers
4571 Int_t ncl=0;
4572 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
4573 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4574 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
9fd412a8 4575 if (tmp.GetClIndex(lay)>=0) ncl++;
0ed58a47 4576 }
4577 Bool_t nextout = kFALSE;
4578 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4579 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4580 Bool_t nextin = kFALSE;
4581 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4582 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4583 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4584 return kFALSE;
4585 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4586 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4587 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4588 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4589
8a32c4b5 4590// detector number
4591 Double_t phi,z;
4592 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4593 Int_t idet=layer.FindDetectorIndex(phi,z);
4594 if(idet<0) { AliInfo(Form("cannot find detector"));
4595 return kFALSE;}
4596
4597 // here check if it has good Chi Square.
4598
4599 //propagate to the intersection with the detector plane
4600 const AliITSdetector &det=layer.GetDetector(idet);
4601 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4602
4603 Float_t locx; //
4604 Float_t locz; //
0e91092f 4605 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4606 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4607 if(key>fPlaneEff->Nblock()) return kFALSE;
4608 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4609 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4610 //***************
0e91092f 4611 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4612 //
4613 //For the time being they are hard-wired, later on from AliITSRecoParam
0e91092f 4614 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
4615 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
4616 Double_t nsigz=4;
4617 Double_t nsigx=4;
4618 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4619 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4620 // done for RecPoints
8a32c4b5 4621
1c97ce2f 4622 // exclude tracks at boundary between detectors
0e91092f 4623 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4624 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4625 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4626 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4627 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
8a32c4b5 4628
0e91092f 4629 if ( (locx-dx < blockXmn+boundaryWidth) ||
4630 (locx+dx > blockXmx-boundaryWidth) ||
4631 (locz-dz < blockZmn+boundaryWidth) ||
4632 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4633 return kTRUE;
7167ae53 4634}
4635//------------------------------------------------------------------------
a70ed6ad 4636void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4637//
4638// This Method has to be optimized! For the time-being it uses the same criteria
4639// as those used in the search of extra clusters for overlapping modules.
4640//
4641// Method Purpose: estabilish whether a track has produced a recpoint or not
4642// in the layer under study (For Plane efficiency)
4643//
4644// inputs: AliITStrackMI* track (pointer to a usable track)
4645// outputs: none
4646// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4647// traversed by this very track. In details:
4648// - if a cluster can be associated to the track then call
4649// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4650// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4651//
a31a139f 4652 if(!fPlaneEff)
4653 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4654 AliITSlayer &layer=fgLayers[ilayer];
4655 Double_t r=layer.GetR();
7167ae53 4656 AliITStrackMI tmp(*track);
4657
4658// detector number
4659 Double_t phi,z;
4660 if (!tmp.GetPhiZat(r,phi,z)) return;
4661 Int_t idet=layer.FindDetectorIndex(phi,z);
4662
8a32c4b5 4663 if(idet<0) { AliInfo(Form("cannot find detector"));
4664 return;}
7167ae53 4665
7167ae53 4666
0e91092f 4667//propagate to the intersection with the detector plane
7167ae53 4668 const AliITSdetector &det=layer.GetDetector(idet);
4669 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4670
1c97ce2f 4671
0e91092f 4672//***************
4673// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4674//
4675 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4676 TMath::Sqrt(tmp.GetSigmaZ2() +
4677 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4678 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4679 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4680 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4681 TMath::Sqrt(tmp.GetSigmaY2() +
4682 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4683 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4684 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4685
4686// road in global (rphi,z) [i.e. in tracking ref. system]
4687 Double_t zmin = tmp.GetZ() - dz;
4688 Double_t zmax = tmp.GetZ() + dz;
4689 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4690 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4691
4692// select clusters in road
7167ae53 4693 layer.SelectClusters(zmin,zmax,ymin,ymax);
4694
0e91092f 4695// Define criteria for track-cluster association
7167ae53 4696 Double_t msz = tmp.GetSigmaZ2() +
4697 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4698 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4699 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4700 Double_t msy = tmp.GetSigmaY2() +
4701 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4702 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4703 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4704 if (tmp.GetConstrain()) {
7167ae53 4705 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4706 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4707 } else {
4708 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4709 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4710 }
7167ae53 4711 msz = 1./msz; // 1/RoadZ^2
4712 msy = 1./msy; // 1/RoadY^2
0e91092f 4713//
7167ae53 4714
4715 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4716 Int_t idetc=-1;
8a32c4b5 4717 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4718 //Double_t tolerance=0.2;
4719 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4720 idetc = cl->GetDetectorIndex();
4721 if(idet!=idetc) continue;
4722 //Int_t ilay = cl->GetLayer();
4723
4724 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4725 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4726
4727 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4728 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4729 }*/
4730 Float_t locx; //
4731 Float_t locz; //
0e91092f 4732 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4733//
4734 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4735 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4736 if(key>fPlaneEff->Nblock()) return;
4737 Bool_t found=kFALSE;
8a32c4b5 4738 //if (ci>=0) {
1cc5cedc 4739 Double_t chi2;
8a32c4b5 4740 while ((cl=layer.GetNextCluster(clidx))!=0) {
4741 idetc = cl->GetDetectorIndex();
4742 if(idet!=idetc) continue;
4743 // here real control to see whether the cluster can be associated to the track.
4744 // cluster not associated to track
4745 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4746 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4747 // calculate track-clusters chi2
1cc5cedc 4748 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4749 // in particular, the error associated to the cluster
8a32c4b5 4750 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4751 // chi2 cut
4752 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4753 found=kTRUE;
8a32c4b5 4754 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4755 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4756 // track->SetExtraModule(ilayer,idetExtra);
4757 }
4758 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4759 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4760 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4761 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4762 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4763 Int_t cltype[2]={-999,-999};
0e91092f 4764
4765 tr[0]=locx;
4766 tr[1]=locz;
4767 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4768 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4769
3ebe30ad 4770 if (found){
4771 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4772 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4773 cltype[0]=layer.GetCluster(ci)->GetNy();
4774 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4775
4776 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4777 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4778 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4779 // It is computed properly by calling the method
4780 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4781 // T
4782 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4783 //if (tmp.PropagateTo(x,0.,0.)) {
4784 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4785 AliCluster c(*layer.GetCluster(ci));
4786 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4787 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4788 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4789 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4790 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4791 //}
3ebe30ad 4792 }
4793 fPlaneEff->FillHistos(key,found,tr,clu,cltype);
5fbd4fd6 4794 }
7167ae53 4795return;
4796}