Changing once more (hopefully we get it correct this time...) the logic to trig the...
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.cxx
CommitLineData
e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
bf6adc12 35
4187a601 36#include "AliLog.h"
a70ed6ad 37#include "AliITSPlaneEff.h"
38#include "AliITSCalibrationSPD.h"
39#include "AliITSCalibrationSDD.h"
40#include "AliITSCalibrationSSD.h"
41#include "AliCDBEntry.h"
42#include "AliCDBManager.h"
43#include "AliAlignObj.h"
44#include "AliTrackPointArray.h"
45#include "AliESDVertex.h"
af885e0f 46#include "AliESDEvent.h"
aad72f45 47#include "AliESDtrack.h"
6c94f330 48#include "AliV0.h"
bf6adc12 49#include "AliHelix.h"
a70ed6ad 50#include "AliITSChannelStatus.h"
51#include "AliITSDetTypeRec.h"
00a7cc50 52#include "AliITSRecPoint.h"
2b295109 53#include "AliITSRecPointContainer.h"
e341247d 54#include "AliITSgeomTGeo.h"
44347160 55#include "AliITSReconstructor.h"
572f41f9 56#include "AliITSClusterParam.h"
23197852 57#include "AliITSsegmentation.h"
58#include "AliITSCalibration.h"
7167ae53 59#include "AliITSPlaneEffSPD.h"
60#include "AliITSPlaneEffSDD.h"
61#include "AliITSPlaneEffSSD.h"
44396017 62#include "AliITSV0Finder.h"
ae00569a 63#include "AliITStrackerMI.h"
e43c066c 64
65ClassImp(AliITStrackerMI)
e43c066c 66
e50912db 67AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 68
8221b41b 69AliITStrackerMI::AliITStrackerMI():AliTracker(),
70fI(0),
71fBestTrack(),
72fTrackToFollow(),
73fTrackHypothesys(),
74fBestHypothesys(),
75fOriginal(),
76fCurrentEsdTrack(),
77fPass(0),
78fAfterV0(kFALSE),
79fLastLayerToTrackTo(0),
afd25725 80fCoefficients(0),
8221b41b 81fEsd(0),
e50912db 82fTrackingPhase("Default"),
6518a6c5 83fUseTGeo(3),
e50912db 84fNtracks(0),
85fxOverX0Pipe(-1.),
86fxTimesRhoPipe(-1.),
87fxOverX0PipeTrks(0),
88fxTimesRhoPipeTrks(0),
89fxOverX0ShieldTrks(0),
90fxTimesRhoShieldTrks(0),
91fxOverX0LayerTrks(0),
92fxTimesRhoLayerTrks(0),
4a66240a 93fDebugStreamer(0),
23197852 94fITSChannelStatus(0),
a70ed6ad 95fkDetTypeRec(0),
ae00569a 96fPlaneEff(0) {
8221b41b 97 //Default constructor
e50912db 98 Int_t i;
99 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
100 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
101 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
8221b41b 102}
44347160 103//------------------------------------------------------------------------
1f3e997f 104AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 105fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 106fBestTrack(),
107fTrackToFollow(),
108fTrackHypothesys(),
109fBestHypothesys(),
110fOriginal(),
111fCurrentEsdTrack(),
112fPass(0),
113fAfterV0(kFALSE),
e50912db 114fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 115fCoefficients(0),
8221b41b 116fEsd(0),
e50912db 117fTrackingPhase("Default"),
6518a6c5 118fUseTGeo(3),
e50912db 119fNtracks(0),
120fxOverX0Pipe(-1.),
121fxTimesRhoPipe(-1.),
122fxOverX0PipeTrks(0),
123fxTimesRhoPipeTrks(0),
124fxOverX0ShieldTrks(0),
125fxTimesRhoShieldTrks(0),
126fxOverX0LayerTrks(0),
127fxTimesRhoLayerTrks(0),
4a66240a 128fDebugStreamer(0),
23197852 129fITSChannelStatus(0),
a70ed6ad 130fkDetTypeRec(0),
ae00569a 131fPlaneEff(0) {
e43c066c 132 //--------------------------------------------------------------------
133 //This is the AliITStrackerMI constructor
134 //--------------------------------------------------------------------
e341247d 135 if (geom) {
136 AliWarning("\"geom\" is actually a dummy argument !");
137 }
138
afd25725 139 fCoefficients = 0;
628e7bb0 140 fAfterV0 = kFALSE;
e341247d 141
e50912db 142 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 143 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
144 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
145
146 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
147 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e43c066c 148 Double_t poff=TMath::ATan2(y,x);
149 Double_t zoff=z;
e341247d 150 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 151
e341247d 152 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 153 r += TMath::Sqrt(x*x + y*y);
e341247d 154 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 155 r += TMath::Sqrt(x*x + y*y);
e341247d 156 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 157 r += TMath::Sqrt(x*x + y*y);
158 r*=0.25;
159
160 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
161
162 for (Int_t j=1; j<nlad+1; j++) {
163 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 164 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 165 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
166 m.Multiply(tm);
a5d0fae6 167 Double_t txyz[3]={0.};
168 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 169 m.LocalToMaster(txyz,xyz);
a5d0fae6 170 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 171 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 172
173 if (phi<0) phi+=TMath::TwoPi();
174 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
175
e43c066c 176 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
177 new(&det) AliITSdetector(r,phi);
1c97ce2f 178 // compute the real radius (with misalignment)
179 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
180 mmisal.Multiply(tm);
181 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
182 mmisal.LocalToMaster(txyz,xyz);
183 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
184 det.SetRmisal(rmisal);
185
23197852 186 } // end loop on detectors
187 } // end loop on ladders
4fa7f7d1 188 fForceSkippingOfLayer[i] = 0;
23197852 189 } // end loop on layers
e43c066c 190
e43c066c 191
e50912db 192 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 193
194 fPass=0;
195 fConstraint[0]=1; fConstraint[1]=0;
196
afd25725 197 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
198 AliITSReconstructor::GetRecoParam()->GetYVdef(),
199 AliITSReconstructor::GetRecoParam()->GetZVdef()};
200 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
201 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
202 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
203 SetVertex(xyzVtx,ersVtx);
e43c066c 204
e50912db 205 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 206 for (Int_t i=0;i<100000;i++){
207 fBestTrackIndex[i]=0;
208 }
afd25725 209
210 // store positions of centre of SPD modules (in z)
211 Double_t tr[3];
212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
213 fSPDdetzcentre[0] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
215 fSPDdetzcentre[1] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
217 fSPDdetzcentre[2] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
219 fSPDdetzcentre[3] = tr[2];
220
afd25725 221 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 222 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
223 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
224 fUseTGeo = 3;
225 }
e50912db 226
227 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
228 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
229
81e97e0d 230 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
231
7167ae53 232 // only for plane efficiency evaluation
58e8dc31 233 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
234 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 235 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 236 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 237 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
238 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
239 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
240 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 241 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 242 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
243 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 244 }
628e7bb0 245}
44347160 246//------------------------------------------------------------------------
8221b41b 247AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
248fI(tracker.fI),
249fBestTrack(tracker.fBestTrack),
250fTrackToFollow(tracker.fTrackToFollow),
251fTrackHypothesys(tracker.fTrackHypothesys),
252fBestHypothesys(tracker.fBestHypothesys),
253fOriginal(tracker.fOriginal),
254fCurrentEsdTrack(tracker.fCurrentEsdTrack),
255fPass(tracker.fPass),
256fAfterV0(tracker.fAfterV0),
257fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 258fCoefficients(tracker.fCoefficients),
8221b41b 259fEsd(tracker.fEsd),
e50912db 260fTrackingPhase(tracker.fTrackingPhase),
afd25725 261fUseTGeo(tracker.fUseTGeo),
e50912db 262fNtracks(tracker.fNtracks),
263fxOverX0Pipe(tracker.fxOverX0Pipe),
264fxTimesRhoPipe(tracker.fxTimesRhoPipe),
265fxOverX0PipeTrks(0),
266fxTimesRhoPipeTrks(0),
267fxOverX0ShieldTrks(0),
268fxTimesRhoShieldTrks(0),
269fxOverX0LayerTrks(0),
270fxTimesRhoLayerTrks(0),
4a66240a 271fDebugStreamer(tracker.fDebugStreamer),
23197852 272fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 273fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 274fPlaneEff(tracker.fPlaneEff) {
8221b41b 275 //Copy constructor
e50912db 276 Int_t i;
277 for(i=0;i<4;i++) {
278 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
279 }
280 for(i=0;i<6;i++) {
281 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
282 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
283 }
284 for(i=0;i<2;i++) {
285 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
286 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
287 }
8221b41b 288}
44347160 289//------------------------------------------------------------------------
8221b41b 290AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
291 //Assignment operator
292 this->~AliITStrackerMI();
293 new(this) AliITStrackerMI(tracker);
294 return *this;
295}
44347160 296//------------------------------------------------------------------------
628e7bb0 297AliITStrackerMI::~AliITStrackerMI()
298{
299 //
300 //destructor
301 //
e50912db 302 if (fCoefficients) delete [] fCoefficients;
303 DeleteTrksMaterialLUT();
81e97e0d 304 if (fDebugStreamer) {
305 //fDebugStreamer->Close();
306 delete fDebugStreamer;
307 }
23197852 308 if(fITSChannelStatus) delete fITSChannelStatus;
309 if(fPlaneEff) delete fPlaneEff;
e43c066c 310}
44347160 311//------------------------------------------------------------------------
23197852 312void AliITStrackerMI::ReadBadFromDetTypeRec() {
313 //--------------------------------------------------------------------
314 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
315 //i.e. from OCDB
316 //--------------------------------------------------------------------
317
318 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
319
4187a601 320 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 321
a70ed6ad 322 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 323
324 // ITS channels map
325 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 326 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 327
328 // ITS detectors and chips
329 Int_t i=0,j=0,k=0,ndet=0;
330 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 331 Int_t nBadDetsPerLayer=0;
23197852 332 ndet=AliITSgeomTGeo::GetNDetectors(i);
333 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
334 for (k=1; k<ndet+1; k++) {
335 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 336 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 337 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 338 } // end loop on detectors
339 } // end loop on ladders
4187a601 340 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 341 } // end loop on layers
342
343 return;
344}
345//------------------------------------------------------------------------
e43c066c 346Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
347 //--------------------------------------------------------------------
348 //This function loads ITS clusters
349 //--------------------------------------------------------------------
2b295109 350
351 TClonesArray *clusters = NULL;
352 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
353 clusters=rpcont->FetchClusters(0,cTree);
354 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
355 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
356 return 1;
e43c066c 357 }
23197852 358 Int_t i=0,j=0,ndet=0;
e43c066c 359 Int_t detector=0;
23197852 360 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
361 ndet=fgLayers[i].GetNdetectors();
e43c066c 362 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
363 for (; j<jmax; j++) {
2b295109 364 // if (!cTree->GetEvent(j)) continue;
365 clusters = rpcont->UncheckedGetClusters(j);
366 if(!clusters)continue;
e43c066c 367 Int_t ncl=clusters->GetEntriesFast();
368 SignDeltas(clusters,GetZ());
1f3e997f 369
e43c066c 370 while (ncl--) {
00a7cc50 371 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 372 detector=c->GetDetectorIndex();
a504d56f 373
75fb37cc 374 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 375
376 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
377 if(retval) {
378 AliWarning(Form("Too many clusters on layer %d!",i));
379 break;
380 }
e43c066c 381 }
6262dd3d 382
afd25725 383 // add dead zone "virtual" cluster in SPD, if there is a cluster within
384 // zwindow cm from the dead zone
385 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 386 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 387 Int_t lab[4] = {0,0,0,detector};
388 Int_t info[3] = {0,0,i};
6518a6c5 389 Float_t q = 0.; // this identifies virtual clusters
afd25725 390 Float_t hit[5] = {xdead,
391 0.,
392 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
393 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
394 q};
395 Bool_t local = kTRUE;
396 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 397 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 398 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
399 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 400 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 401 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
402 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 403 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 404 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
405 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 406 hit[1] = fSPDdetzcentre[2]-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[2]+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[3]-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));
e43c066c 415 }
6518a6c5 416 } // "virtual" clusters in SPD
e43c066c 417
418 }
419 //
420 fgLayers[i].ResetRoad(); //road defined by the cluster density
421 fgLayers[i].SortClusters();
422 }
423
4fa7f7d1 424 // check whether we have to skip some layers
425 SetForceSkippingOfLayer();
426
e43c066c 427 return 0;
428}
44347160 429//------------------------------------------------------------------------
e43c066c 430void AliITStrackerMI::UnloadClusters() {
431 //--------------------------------------------------------------------
432 //This function unloads ITS clusters
433 //--------------------------------------------------------------------
e50912db 434 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 435}
44347160 436//------------------------------------------------------------------------
23197852 437void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
438 //--------------------------------------------------------------------
439 // Publishes all pointers to clusters known to the tracker into the
440 // passed object array.
441 // The ownership is not transfered - the caller is not expected to delete
442 // the clusters.
443 //--------------------------------------------------------------------
444
445 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
446 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
447 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
448 array->AddLast(cl);
449 }
450 }
451
452 return;
453}
454//------------------------------------------------------------------------
44396017 455Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 456 //--------------------------------------------------------------------
457 // Correction for the material between the TPC and the ITS
e43c066c 458 //--------------------------------------------------------------------
e50912db 459 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
460 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
463 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
464 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
466 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 467 } else {
44396017 468 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 469 return 0;
e43c066c 470 }
471
e50912db 472 return 1;
e43c066c 473}
44347160 474//------------------------------------------------------------------------
af885e0f 475Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 476 //--------------------------------------------------------------------
477 // This functions reconstructs ITS tracks
478 // The clusters must be already loaded !
479 //--------------------------------------------------------------------
fddf8459 480
4fa7f7d1 481 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 482
e50912db 483 fTrackingPhase="Clusters2Tracks";
484
e43c066c 485 TObjArray itsTracks(15000);
628e7bb0 486 fOriginal.Clear();
81e97e0d 487 fEsd = event; // store pointer to the esd
afd25725 488
9a5326b1 489 // temporary (for cosmics)
490 if(event->GetVertex()) {
491 TString title = event->GetVertex()->GetTitle();
492 if(title.Contains("cosmics")) {
493 Double_t xyz[3]={GetX(),GetY(),GetZ()};
494 Double_t exyz[3]={0.1,0.1,0.1};
495 SetVertex(xyz,exyz);
496 }
497 }
498 // temporary
75a74b11 499 Int_t noesd = 0;
e43c066c 500 {/* Read ESD tracks */
afd25725 501 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 502 Int_t nentr=event->GetNumberOfTracks();
75a74b11 503 noesd=nentr;
504 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 505 while (nentr--) {
506 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 507 // ---- for debugging:
508 //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 509
510 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
511 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
512 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 513 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
15dd636f 514 AliITStrackMI *t=0;
e43c066c 515 try {
15dd636f 516 t=new AliITStrackMI(*esd);
e43c066c 517 } catch (const Char_t *msg) {
628e7bb0 518 //Warning("Clusters2Tracks",msg);
e43c066c 519 delete t;
520 continue;
521 }
b9671574 522 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
523 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 524
525
afd25725 526 // look at the ESD mass hypothesys !
527 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 528 // write expected q
b9671574 529 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 530
afd25725 531 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 532 //track - can be V0 according to TPC
afd25725 533 } else {
534 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 535 delete t;
536 continue;
e50912db 537 }
afd25725 538 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 539 delete t;
540 continue;
541 }
6c23ffed 542 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 543 delete t;
544 continue;
545 }
e50912db 546 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 547 delete t;
548 continue;
549 }
e43c066c 550 }
b9671574 551 t->SetReconstructed(kFALSE);
e43c066c 552 itsTracks.AddLast(t);
628e7bb0 553 fOriginal.AddLast(t);
e43c066c 554 }
555 } /* End Read ESD tracks */
556
557 itsTracks.Sort();
628e7bb0 558 fOriginal.Sort();
e43c066c 559 Int_t nentr=itsTracks.GetEntriesFast();
560 fTrackHypothesys.Expand(nentr);
81e97e0d 561 fBestHypothesys.Expand(nentr);
afd25725 562 MakeCoefficients(nentr);
513ab112 563 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 564 Int_t ntrk=0;
afd25725 565 // THE TWO TRACKING PASSES
e43c066c 566 for (fPass=0; fPass<2; fPass++) {
567 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 568 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 569 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 570 if (t==0) continue; //this track has been already tracked
1c97ce2f 571 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 572 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 573 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 574 if (fConstraint[fPass]) {
575 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
576 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
577 }
e43c066c 578
579 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 580 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 581 fI = 6;
582 ResetTrackToFollow(*t);
583 ResetBestTrack();
6518a6c5 584
e50912db 585 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 586
e43c066c 587
588 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
589 //
ae00569a 590 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 591 if (!besttrack) continue;
592 besttrack->SetLabel(tpcLabel);
593 // besttrack->CookdEdx();
594 CookdEdx(besttrack);
b9671574 595 besttrack->SetFakeRatio(1.);
e43c066c 596 CookLabel(besttrack,0.); //For comparison only
e43c066c 597 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 598
628e7bb0 599 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
600
b9671574 601 t->SetReconstructed(kTRUE);
1c97ce2f 602 ntrk++;
4187a601 603 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 604 }
605 GetBestHypothesysMIP(itsTracks);
afd25725 606 } // end loop on the two tracking passes
e43c066c 607
cd90f0a2 608 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
609 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 610 fAfterV0 = kTRUE;
628e7bb0 611 //
e43c066c 612 itsTracks.Delete();
613 //
614 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 615 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 616 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
617 if (array) array->Delete();
618 delete fTrackHypothesys.RemoveAt(ientry);
619 }
620
621 fTrackHypothesys.Delete();
81e97e0d 622 fBestHypothesys.Delete();
628e7bb0 623 fOriginal.Clear();
afd25725 624 delete [] fCoefficients;
625 fCoefficients=0;
e50912db 626 DeleteTrksMaterialLUT();
627
75a74b11 628 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 629
630 fTrackingPhase="Default";
628e7bb0 631
e43c066c 632 return 0;
633}
44347160 634//------------------------------------------------------------------------
af885e0f 635Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 636 //--------------------------------------------------------------------
637 // This functions propagates reconstructed ITS tracks back
638 // The clusters must be loaded !
639 //--------------------------------------------------------------------
e50912db 640 fTrackingPhase="PropagateBack";
e43c066c 641 Int_t nentr=event->GetNumberOfTracks();
75a74b11 642 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 643
644 Int_t ntrk=0;
645 for (Int_t i=0; i<nentr; i++) {
646 AliESDtrack *esd=event->GetTrack(i);
647
648 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
649 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
650
15dd636f 651 AliITStrackMI *t=0;
e43c066c 652 try {
15dd636f 653 t=new AliITStrackMI(*esd);
e43c066c 654 } catch (const Char_t *msg) {
628e7bb0 655 //Warning("PropagateBack",msg);
e43c066c 656 delete t;
657 continue;
658 }
b9671574 659 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 660
661 ResetTrackToFollow(*t);
4fa7f7d1 662
67178f34 663 /*
9a5326b1 664 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 665 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 666 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
667 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
668 fTrackToFollow.StartTimeIntegral();
669 // from vertex to outside pipe
670 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 671 }*/
672 // Start time integral and add distance from current position to vertex
673 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
674 fTrackToFollow.GetXYZ(xyzTrk);
675 Double_t dst2 = 0.;
676 for (Int_t icoord=0; icoord<3; icoord++) {
677 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
678 dst2 += di*di;
e43c066c 679 }
67178f34 680 fTrackToFollow.StartTimeIntegral();
681 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 682
6c94f330 683 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 684 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
685 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 686 delete t;
687 continue;
688 }
689 fTrackToFollow.SetLabel(t->GetLabel());
690 //fTrackToFollow.CookdEdx();
691 CookLabel(&fTrackToFollow,0.); //For comparison only
692 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
693 //UseClusters(&fTrackToFollow);
694 ntrk++;
695 }
696 delete t;
697 }
698
75a74b11 699 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 700
e50912db 701 fTrackingPhase="Default";
702
e43c066c 703 return 0;
704}
44347160 705//------------------------------------------------------------------------
af885e0f 706Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 707 //--------------------------------------------------------------------
708 // This functions refits ITS tracks using the
709 // "inward propagated" TPC tracks
710 // The clusters must be loaded !
711 //--------------------------------------------------------------------
e50912db 712 fTrackingPhase="RefitInward";
44396017 713
cd90f0a2 714 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 715
e43c066c 716 Int_t nentr=event->GetNumberOfTracks();
75a74b11 717 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 718
719 Int_t ntrk=0;
720 for (Int_t i=0; i<nentr; i++) {
721 AliESDtrack *esd=event->GetTrack(i);
722
723 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
724 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
725 if (esd->GetStatus()&AliESDtrack::kTPCout)
726 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
727
15dd636f 728 AliITStrackMI *t=0;
e43c066c 729 try {
15dd636f 730 t=new AliITStrackMI(*esd);
e43c066c 731 } catch (const Char_t *msg) {
628e7bb0 732 //Warning("RefitInward",msg);
e43c066c 733 delete t;
734 continue;
735 }
b9671574 736 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 737 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 738 delete t;
739 continue;
740 }
741
742 ResetTrackToFollow(*t);
743 fTrackToFollow.ResetClusters();
744
745 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
6c94f330 746 fTrackToFollow.ResetCovariance(10.);
e43c066c 747
748 //Refitting...
58e8dc31 749 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
750 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 751
4187a601 752 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
7167ae53 753 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
4187a601 754 AliDebug(2," refit OK");
e43c066c 755 fTrackToFollow.SetLabel(t->GetLabel());
756 // fTrackToFollow.CookdEdx();
757 CookdEdx(&fTrackToFollow);
758
759 CookLabel(&fTrackToFollow,0.0); //For comparison only
760
9a5326b1 761 //The beam pipe
e50912db 762 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 763 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 764 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 765 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
766 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 767 Double_t r[3]={0.,0.,0.};
9a5326b1 768 Double_t maxD=3.;
769 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
770 ntrk++;
e43c066c 771 }
772 }
773 delete t;
774 }
775
75a74b11 776 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 777
e50912db 778 fTrackingPhase="Default";
779
e43c066c 780 return 0;
781}
44347160 782//------------------------------------------------------------------------
e43c066c 783AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
784 //--------------------------------------------------------------------
785 // Return pointer to a given cluster
786 //--------------------------------------------------------------------
787 Int_t l=(index & 0xf0000000) >> 28;
788 Int_t c=(index & 0x0fffffff) >> 00;
789 return fgLayers[l].GetCluster(c);
790}
9a5326b1 791//------------------------------------------------------------------------
df29e9a4 792Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 793 //--------------------------------------------------------------------
df29e9a4 794 // Get track space point with index i
9a5326b1 795 //--------------------------------------------------------------------
60066577 796
78b03929 797 Int_t l=(index & 0xf0000000) >> 28;
798 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 799 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 800 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 801
60066577 802 Float_t xyz[3];
803 Float_t cov[6];
804 cl->GetGlobalXYZ(xyz);
805 cl->GetGlobalCov(cov);
806 p.SetXYZ(xyz, cov);
be77c8c9 807 p.SetCharge(cl->GetQ());
ebbcf1ea 808 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 809 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 810 p.SetClusterType(cl->GetClusterType());
ae079791 811 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 812 switch (l) {
813 case 0:
ae079791 814 iLayer = AliGeomManager::kSPD1;
df29e9a4 815 break;
816 case 1:
ae079791 817 iLayer = AliGeomManager::kSPD2;
df29e9a4 818 break;
819 case 2:
ae079791 820 iLayer = AliGeomManager::kSDD1;
df29e9a4 821 break;
822 case 3:
ae079791 823 iLayer = AliGeomManager::kSDD2;
9a5326b1 824 break;
825 case 4:
826 iLayer = AliGeomManager::kSSD1;
827 break;
828 case 5:
829 iLayer = AliGeomManager::kSSD2;
830 break;
831 default:
832 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
833 break;
834 };
835 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
836 p.SetVolumeID((UShort_t)volid);
837 return kTRUE;
838}
839//------------------------------------------------------------------------
840Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
841 AliTrackPoint& p, const AliESDtrack *t) {
842 //--------------------------------------------------------------------
843 // Get track space point with index i
844 // (assign error estimated during the tracking)
845 //--------------------------------------------------------------------
846
847 Int_t l=(index & 0xf0000000) >> 28;
848 Int_t c=(index & 0x0fffffff) >> 00;
849 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
850 Int_t idet = cl->GetDetectorIndex();
4187a601 851
9a5326b1 852 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
853
854 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
855 Float_t detxy[2];
856 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
857 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
858 Double_t alpha = t->GetAlpha();
859 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
9be1d1c7 860 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
9a5326b1 861 phi += alpha-det.GetPhi();
862 Float_t tgphi = TMath::Tan(phi);
863
864 Float_t tgl = t->GetTgl(); // tgl about const along track
865 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
866
d9ead1a0 867 Float_t errtrky,errtrkz,covyz;
8c139cf3 868 Bool_t addMisalErr=kFALSE;
d9ead1a0 869 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 870
871 Float_t xyz[3];
872 Float_t cov[6];
873 cl->GetGlobalXYZ(xyz);
874 // cl->GetGlobalCov(cov);
875 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 876 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 877 tmpcl.GetGlobalCov(cov);
878
879 p.SetXYZ(xyz, cov);
be77c8c9 880 p.SetCharge(cl->GetQ());
ebbcf1ea 881 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 882 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 883 p.SetClusterType(cl->GetClusterType());
9a5326b1 884
885 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
886 switch (l) {
887 case 0:
888 iLayer = AliGeomManager::kSPD1;
889 break;
890 case 1:
891 iLayer = AliGeomManager::kSPD2;
892 break;
893 case 2:
894 iLayer = AliGeomManager::kSDD1;
895 break;
896 case 3:
897 iLayer = AliGeomManager::kSDD2;
df29e9a4 898 break;
899 case 4:
ae079791 900 iLayer = AliGeomManager::kSSD1;
df29e9a4 901 break;
902 case 5:
ae079791 903 iLayer = AliGeomManager::kSSD2;
df29e9a4 904 break;
905 default:
906 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
907 break;
908 };
ae079791 909 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 910
df29e9a4 911 p.SetVolumeID((UShort_t)volid);
912 return kTRUE;
913}
44347160 914//------------------------------------------------------------------------
81e97e0d 915void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 916{
917 //--------------------------------------------------------------------
918 // Follow prolongation tree
919 //--------------------------------------------------------------------
81e97e0d 920 //
afd25725 921 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
922 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
923
2755f080 924
b9671574 925 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 926 if (esd->GetV0Index(0)>0) {
81e97e0d 927 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 928 // mapping of ESD track is different as ITS track in Containers
81e97e0d 929 // Need something more stable
44347160 930 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 931 for (Int_t i=0;i<3;i++){
932 Int_t index = esd->GetV0Index(i);
933 if (index==0) break;
d6a49f20 934 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 935 if (vertex->GetStatus()<0) continue; // rejected V0
936 //
afd25725 937 if (esd->GetSign()>0) {
938 vertex->SetIndex(0,esdindex);
939 } else {
940 vertex->SetIndex(1,esdindex);
941 }
81e97e0d 942 }
943 }
944 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
945 if (!bestarray){
946 bestarray = new TObjArray(5);
947 fBestHypothesys.AddAt(bestarray,esdindex);
948 }
e43c066c 949
81e97e0d 950 //
e43c066c 951 //setup tree of the prolongations
952 //
15dd636f 953 static AliITStrackMI tracks[7][100];
954 AliITStrackMI *currenttrack;
955 static AliITStrackMI currenttrack1;
956 static AliITStrackMI currenttrack2;
957 static AliITStrackMI backuptrack;
e43c066c 958 Int_t ntracks[7];
959 Int_t nindexes[7][100];
960 Float_t normalizedchi2[100];
961 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 962 otrack->SetNSkipped(0);
15dd636f 963 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 964 ntracks[6]=1;
81e97e0d 965 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 966 Int_t modstatus = 1; // found
967 Float_t xloc,zloc;
e43c066c 968 //
969 //
970 // follow prolongations
e50912db 971 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 972 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 973 fI = ilayer;
e43c066c 974 //
2755f080 975 AliITSlayer &layer=fgLayers[ilayer];
976 Double_t r = layer.GetR();
e43c066c 977 ntracks[ilayer]=0;
978 //
979 //
2755f080 980 Int_t nskipped=0;
e43c066c 981 Float_t nused =0;
e50912db 982 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 983 //set current track
984 if (ntracks[ilayer]>=100) break;
b9671574 985 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
986 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 987 if (ntracks[ilayer]>15+ilayer){
b9671574 988 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
989 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 990 }
991
15dd636f 992 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 993
afd25725 994 // material between SSD and SDD, SDD and SPD
e50912db 995 if (ilayer==3)
996 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
997 if (ilayer==1)
998 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 999
2755f080 1000 // detector number
8602c008 1001 Double_t phi,z;
1002 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1003 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1004
1005 Double_t trackGlobXYZ1[3];
d1181f10 1006 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1007
2755f080 1008 // Get the budget to the primary vertex for the current track being prolonged
1009 Double_t budgetToPrimVertex = GetEffectiveThickness();
1010
1011 // check if we allow a prolongation without point
6518a6c5 1012 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1013 if (skip) {
1014 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1015 // propagate to the layer radius
d1181f10 1016 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1017 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1018 // apply correction for material of the current layer
1019 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1020 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1021 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1022 vtrack->SetClIndex(ilayer,-1);
ae00569a 1023 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1024 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1025 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1026 }
2755f080 1027 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1028 ntracks[ilayer]++;
6518a6c5 1029 continue;
2755f080 1030 }
1031
1032 // track outside layer acceptance in z
1033 if (idet<0) continue;
1034
1035 //propagate to the intersection with the detector plane
1036 const AliITSdetector &det=layer.GetDetector(idet);
1037 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1038 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1039 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1040 currenttrack1.SetDetectorIndex(idet);
1041 currenttrack2.SetDetectorIndex(idet);
d1181f10 1042 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1043
afd25725 1044 //***************
1c97ce2f 1045 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1046 //
2755f080 1047 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1048 Double_t zmin,zmax,ymin,ymax;
1049 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1050
afd25725 1051 // select clusters in road
e43c066c 1052 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1053 //********************
44347160 1054
afd25725 1055 // Define criteria for track-cluster association
44347160 1056 Double_t msz = currenttrack1.GetSigmaZ2() +
1057 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1058 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1059 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1060 Double_t msy = currenttrack1.GetSigmaY2() +
1061 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1062 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1063 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1064 if (constrain) {
1065 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1066 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1067 } else {
1068 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1069 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1070 }
1071 msz = 1./msz; // 1/RoadZ^2
1072 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1073
e43c066c 1074 //
e43c066c 1075 //
afd25725 1076 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1077 //
afd25725 1078 const AliITSRecPoint *cl=0;
1079 Int_t clidx=-1;
1080 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1081 Bool_t deadzoneSPD=kFALSE;
e43c066c 1082 currenttrack = &currenttrack1;
6518a6c5 1083
ae00569a 1084 // check if the road contains a dead zone
23197852 1085 Bool_t noClusters = kFALSE;
1086 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1087 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1088 Double_t dz=0.5*(zmax-zmin);
1089 Double_t dy=0.5*(ymax-ymin);
1090 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1091 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1092 // create a prolongation without clusters (check also if there are no clusters in the road)
1093 if (dead ||
23197852 1094 (noClusters &&
ae00569a 1095 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1096 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1097 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1098 if (dead==0) {
1099 modstatus = 5; // no cls in road
1100 } else if (dead==1) {
1101 modstatus = 7; // holes in z in SPD
f8720bda 1102 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1103 modstatus = 2; // dead from OCDB
1104 }
1105 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1106 // apply correction for material of the current layer
1107 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1108 if (constrain) { // apply vertex constrain
1109 updatetrack->SetConstrain(constrain);
1110 Bool_t isPrim = kTRUE;
1111 if (ilayer<4) { // check that it's close to the vertex
1112 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1113 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1114 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1115 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1116 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1117 }
1118 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1119 }
f8720bda 1120 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1121 if (dead) {
ae00569a 1122 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1123 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1124 deadzoneSPD=kTRUE;
f8720bda 1125 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1126 updatetrack->SetDeadZoneProbability(ilayer,1.);
1127 } else if (dead==4) { // at least a single dead channel from OCDB
1128 updatetrack->SetDeadZoneProbability(ilayer,0.);
1129 }
6518a6c5 1130 }
1131 ntracks[ilayer]++;
1132 }
1133
ae00569a 1134 clidx=-1;
6518a6c5 1135 // loop over clusters in the road
afd25725 1136 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1137 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1138 Bool_t changedet =kFALSE;
6518a6c5 1139 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1140 Int_t idetc=cl->GetDetectorIndex();
afd25725 1141
a5d0fae6 1142 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1143 // take into account misalignment (bring track to real detector plane)
1144 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1145 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1146 // a first cut on track-cluster distance
1147 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1148 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1149 { // cluster not associated to track
4187a601 1150 AliDebug(2,"not associated");
1c97ce2f 1151 continue;
1152 }
1153 // bring track back to ideal detector plane
9be1d1c7 1154 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1155 } else { // have to move track to cluster's detector
a5d0fae6 1156 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1157 // a first cut on track-cluster distance
a5d0fae6 1158 Double_t y;
1c97ce2f 1159 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1160 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1161 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1162 continue; // cluster not associated to track
e43c066c 1163 //
15dd636f 1164 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1165 changedet = kTRUE;
e43c066c 1166 currenttrack =&currenttrack2;
a5d0fae6 1167 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1168 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1169 changedet = kFALSE;
e43c066c 1170 continue;
1171 }
a5d0fae6 1172 currenttrack->SetDetectorIndex(idetc);
e50912db 1173 // Get again the budget to the primary vertex
1174 // for the current track being prolonged, if had to change detector
1175 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1176 }
1177
afd25725 1178 // calculate track-clusters chi2
1179 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1180 // chi2 cut
4187a601 1181 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1182 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
6518a6c5 1183 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1184 if (ntracks[ilayer]>=100) continue;
15dd636f 1185 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1186 updatetrack->SetClIndex(ilayer,-1);
afd25725 1187 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1188
6518a6c5 1189 if (cl->GetQ()!=0) { // real cluster
1c97ce2f 1190 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1191 AliDebug(2,"update failed");
1c97ce2f 1192 continue;
1193 }
09cf9d66 1194 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1195 modstatus = 1; // found
6518a6c5 1196 } else { // virtual cluster in dead zone
b9671574 1197 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1198 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1199 modstatus = 7; // holes in z in SPD
1200 }
1201
1202 if (changedet) {
1203 Float_t xlocnewdet,zlocnewdet;
d1181f10 1204 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1205 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1206 }
ae00569a 1207 } else {
1208 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1209 }
afd25725 1210 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1211
1212 // apply correction for material of the current layer
e50912db 1213 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1214
afd25725 1215 if (constrain) { // apply vertex constrain
b9671574 1216 updatetrack->SetConstrain(constrain);
e43c066c 1217 Bool_t isPrim = kTRUE;
afd25725 1218 if (ilayer<4) { // check that it's close to the vertex
b9671574 1219 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1220 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1221 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1222 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1223 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1224 }
afd25725 1225 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1226 } //apply vertex constrain
1227 ntracks[ilayer]++;
afd25725 1228 } // create new hypothesis
4187a601 1229 else {
1230 AliDebug(2,"chi2 too large");
1231 }
1232
2755f080 1233 } // loop over possible prolongations
1234
1235 // allow one prolongation without clusters
6518a6c5 1236 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1237 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1238 // apply correction for material of the current layer
1239 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1240 vtrack->SetClIndex(ilayer,-1);
ae00569a 1241 modstatus = 3; // skipped
1242 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
afd25725 1243 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1244 vtrack->IncrementNSkipped();
e43c066c 1245 ntracks[ilayer]++;
1246 }
1247
6262dd3d 1248
e50912db 1249 } // loop over tracks in layer ilayer+1
afd25725 1250
1251 //loop over track candidates for the current layer
e43c066c 1252 //
1253 //
1254 Int_t accepted=0;
1255
afd25725 1256 Int_t golden=0;
e43c066c 1257 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1258 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1259 if (normalizedchi2[itrack] <
1260 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1261 if (ilayer>4) {
1262 accepted++;
1263 } else {
1264 if (constrain) { // constrain
afd25725 1265 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1266 accepted++;
44347160 1267 } else { // !constrain
afd25725 1268 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1269 accepted++;
44347160 1270 }
e43c066c 1271 }
1272 }
afd25725 1273 // sort tracks by increasing normalized chi2
1274 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1275 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1276 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1277 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1278 } // end loop over layers
1279
afd25725 1280
1281 //
1282 // Now select tracks to be kept
1283 //
44347160 1284 Int_t max = constrain ? 20 : 5;
e43c066c 1285
afd25725 1286 // tracks that reach layer 0 (SPD inner)
44347160 1287 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1288 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1289 if (track.GetNumberOfClusters()<2) continue;
afd25725 1290 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1291 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1292 continue;
1293 }
15dd636f 1294 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1295 }
afd25725 1296
1297 // tracks that reach layer 1 (SPD outer)
628e7bb0 1298 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1299 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1300 if (track.GetNumberOfClusters()<4) continue;
afd25725 1301 if (!constrain && track.GetNormChi2(1) >
1302 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1303 if (constrain) track.IncrementNSkipped();
81e97e0d 1304 if (!constrain) {
b9671574 1305 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1306 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1307 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1308 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1309 }
1310 }
15dd636f 1311 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1312 }
afd25725 1313
6518a6c5 1314 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1315 if (!constrain){
628e7bb0 1316 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1317 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1318 if (track.GetNumberOfClusters()<3) continue;
afd25725 1319 if (!constrain && track.GetNormChi2(2) >
1320 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1321 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1322 if (!constrain){
b9671574 1323 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1324 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1325 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1326 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1327 }
1328 }
15dd636f 1329 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1330 }
1331 }
81e97e0d 1332
afd25725 1333 if (!constrain) {
81e97e0d 1334 //
afd25725 1335 // register best track of each layer - important for V0 finder
81e97e0d 1336 //
1337 for (Int_t ilayer=0;ilayer<5;ilayer++){
1338 if (ntracks[ilayer]==0) continue;
1339 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1340 if (track.GetNumberOfClusters()<1) continue;
1341 CookLabel(&track,0);
1342 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1343 }
1344 }
1345 //
1346 // update TPC V0 information
1347 //
b9671574 1348 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1349 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1350 for (Int_t i=0;i<3;i++){
b9671574 1351 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1352 if (index==0) break;
44347160 1353 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1354 if (vertex->GetStatus()<0) continue; // rejected V0
1355 //
6c94f330 1356 if (otrack->GetSign()>0) {
81e97e0d 1357 vertex->SetIndex(0,esdindex);
1358 }
1359 else{
1360 vertex->SetIndex(1,esdindex);
1361 }
1362 //find nearest layer with track info
b75d63a7 1363 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1364 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1365 Int_t nearest = nearestold;
1366 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1367 if (ntracks[nearest]==0){
1368 nearest = ilayer;
1369 }
1370 }
1371 //
1372 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1373 if (nearestold<5&&nearest<5){
b9671574 1374 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1375 if (accept){
6c94f330 1376 if (track.GetSign()>0) {
b75d63a7 1377 vertex->SetParamP(track);
81e97e0d 1378 vertex->Update(fprimvertex);
44347160 1379 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1380 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1381 }else{
b75d63a7 1382 vertex->SetParamN(track);
81e97e0d 1383 vertex->Update(fprimvertex);
1384 //vertex->SetIndex(1,track.fESDtrack->GetID());
1385 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1386 }
1387 vertex->SetStatus(vertex->GetStatus()+1);
1388 }else{
44347160 1389 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1390 }
1391 }
81e97e0d 1392 }
afd25725 1393 }
1394
e43c066c 1395}
44347160 1396//------------------------------------------------------------------------
e43c066c 1397AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1398{
1399 //--------------------------------------------------------------------
1400 //
1401 //
1402 return fgLayers[layer];
1403}
44347160 1404//------------------------------------------------------------------------
8221b41b 1405AliITStrackerMI::AliITSlayer::AliITSlayer():
1406fR(0),
1407fPhiOffset(0),
1408fNladders(0),
1409fZOffset(0),
1410fNdetectors(0),
1411fDetectors(0),
1412fN(0),
1413fDy5(0),
1414fDy10(0),
1415fDy20(0),
1416fClustersCs(0),
1417fClusterIndexCs(0),
1418fYcs(0),
1419fZcs(0),
1420fNcs(0),
1421fCurrentSlice(-1),
d9ead1a0 1422fZmin(0),
8221b41b 1423fZmax(0),
1424fYmin(0),
1425fYmax(0),
1426fI(0),
1427fImax(0),
1428fSkip(0),
1429fAccepted(0),
d9ead1a0 1430fRoad(0),
1431fMaxSigmaClY(0),
1432fMaxSigmaClZ(0),
1433fNMaxSigmaCl(3)
1434{
e43c066c 1435 //--------------------------------------------------------------------
1436 //default AliITSlayer constructor
1437 //--------------------------------------------------------------------
e50912db 1438 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1439 fClusterWeight[i]=0;
1440 fClusterTracks[0][i]=-1;
1441 fClusterTracks[1][i]=-1;
1442 fClusterTracks[2][i]=-1;
1443 fClusterTracks[3][i]=-1;
1444 }
1445}
44347160 1446//------------------------------------------------------------------------
e43c066c 1447AliITStrackerMI::AliITSlayer::
8221b41b 1448AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1449fR(r),
1450fPhiOffset(p),
1451fNladders(nl),
1452fZOffset(z),
1453fNdetectors(nd),
1454fDetectors(0),
1455fN(0),
1456fDy5(0),
1457fDy10(0),
1458fDy20(0),
1459fClustersCs(0),
1460fClusterIndexCs(0),
1461fYcs(0),
1462fZcs(0),
1463fNcs(0),
1464fCurrentSlice(-1),
d9ead1a0 1465fZmin(0),
8221b41b 1466fZmax(0),
1467fYmin(0),
1468fYmax(0),
1469fI(0),
1470fImax(0),
1471fSkip(0),
1472fAccepted(0),
d9ead1a0 1473fRoad(0),
1474fMaxSigmaClY(0),
1475fMaxSigmaClZ(0),
1476fNMaxSigmaCl(3) {
e43c066c 1477 //--------------------------------------------------------------------
1478 //main AliITSlayer constructor
1479 //--------------------------------------------------------------------
e43c066c 1480 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1481 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1482}
44347160 1483//------------------------------------------------------------------------
8221b41b 1484AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1485fR(layer.fR),
1486fPhiOffset(layer.fPhiOffset),
1487fNladders(layer.fNladders),
1488fZOffset(layer.fZOffset),
1489fNdetectors(layer.fNdetectors),
1490fDetectors(layer.fDetectors),
1491fN(layer.fN),
1492fDy5(layer.fDy5),
1493fDy10(layer.fDy10),
1494fDy20(layer.fDy20),
1495fClustersCs(layer.fClustersCs),
1496fClusterIndexCs(layer.fClusterIndexCs),
1497fYcs(layer.fYcs),
1498fZcs(layer.fZcs),
1499fNcs(layer.fNcs),
1500fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1501fZmin(layer.fZmin),
8221b41b 1502fZmax(layer.fZmax),
1503fYmin(layer.fYmin),
1504fYmax(layer.fYmax),
1505fI(layer.fI),
1506fImax(layer.fImax),
1507fSkip(layer.fSkip),
1508fAccepted(layer.fAccepted),
d9ead1a0 1509fRoad(layer.fRoad),
1510fMaxSigmaClY(layer.fMaxSigmaClY),
1511fMaxSigmaClZ(layer.fMaxSigmaClZ),
1512fNMaxSigmaCl(layer.fNMaxSigmaCl)
1513{
8221b41b 1514 //Copy constructor
1515}
44347160 1516//------------------------------------------------------------------------
e43c066c 1517AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1518 //--------------------------------------------------------------------
1519 // AliITSlayer destructor
1520 //--------------------------------------------------------------------
23197852 1521 delete [] fDetectors;
e43c066c 1522 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1523 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1524 fClusterWeight[i]=0;
1525 fClusterTracks[0][i]=-1;
1526 fClusterTracks[1][i]=-1;
1527 fClusterTracks[2][i]=-1;
1528 fClusterTracks[3][i]=-1;
1529 }
1530}
44347160 1531//------------------------------------------------------------------------
e43c066c 1532void AliITStrackerMI::AliITSlayer::ResetClusters() {
1533 //--------------------------------------------------------------------
1534 // This function removes loaded clusters
1535 //--------------------------------------------------------------------
1536 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1537 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1538 fClusterWeight[i]=0;
1539 fClusterTracks[0][i]=-1;
1540 fClusterTracks[1][i]=-1;
1541 fClusterTracks[2][i]=-1;
1542 fClusterTracks[3][i]=-1;
1543 }
1544
1545 fN=0;
1546 fI=0;
1547}
44347160 1548//------------------------------------------------------------------------
e43c066c 1549void AliITStrackerMI::AliITSlayer::ResetWeights() {
1550 //--------------------------------------------------------------------
1551 // This function reset weights of the clusters
1552 //--------------------------------------------------------------------
e50912db 1553 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1554 fClusterWeight[i]=0;
1555 fClusterTracks[0][i]=-1;
1556 fClusterTracks[1][i]=-1;
1557 fClusterTracks[2][i]=-1;
1558 fClusterTracks[3][i]=-1;
1559 }
1560 for (Int_t i=0; i<fN;i++) {
00a7cc50 1561 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1562 if (cl&&cl->IsUsed()) cl->Use();
1563 }
1564
1565}
44347160 1566//------------------------------------------------------------------------
e43c066c 1567void AliITStrackerMI::AliITSlayer::ResetRoad() {
1568 //--------------------------------------------------------------------
1569 // This function calculates the road defined by the cluster density
1570 //--------------------------------------------------------------------
1571 Int_t n=0;
1572 for (Int_t i=0; i<fN; i++) {
1573 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1574 }
afd25725 1575 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1576}
44347160 1577//------------------------------------------------------------------------
afd25725 1578Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1579 //--------------------------------------------------------------------
1580 //This function adds a cluster to this layer
1581 //--------------------------------------------------------------------
e50912db 1582 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1583 return 1;
1584 }
1585 fCurrentSlice=-1;
afd25725 1586 fClusters[fN]=cl;
1d4090b7 1587 fN++;
afd25725 1588 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1589 //AD
1590 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1591 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1592 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1593 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1594 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1595 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1596 //AD
1597 /*
afd25725 1598 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1599 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1600 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1601 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1602 */
e43c066c 1603 return 0;
1604}
44347160 1605//------------------------------------------------------------------------
e43c066c 1606void AliITStrackerMI::AliITSlayer::SortClusters()
1607{
1608 //
1609 //sort clusters
1610 //
00a7cc50 1611 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1612 Float_t *z = new Float_t[fN];
1613 Int_t * index = new Int_t[fN];
1614 //
d9ead1a0 1615 fMaxSigmaClY=0.; //AD
1616 fMaxSigmaClZ=0.; //AD
1617
1d4090b7 1618 for (Int_t i=0;i<fN;i++){
1619 z[i] = fClusters[i]->GetZ();
d9ead1a0 1620 // save largest errors in y and z for this layer
1621 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1622 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1623 }
1624 TMath::Sort(fN,z,index,kFALSE);
1625 for (Int_t i=0;i<fN;i++){
1626 clusters[i] = fClusters[index[i]];
1627 }
1628 //
1629 for (Int_t i=0;i<fN;i++){
1630 fClusters[i] = clusters[i];
1631 fZ[i] = fClusters[i]->GetZ();
1632 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1633 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1634 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1635 fY[i] = y;
1636 }
1637 delete[] index;
1638 delete[] z;
1639 delete[] clusters;
1640 //
1641
e43c066c 1642 fYB[0]=10000000;
1643 fYB[1]=-10000000;
1644 for (Int_t i=0;i<fN;i++){
1645 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1646 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1647 fClusterIndex[i] = i;
1648 }
1649 //
1650 // fill slices
1651 fDy5 = (fYB[1]-fYB[0])/5.;
1652 fDy10 = (fYB[1]-fYB[0])/10.;
1653 fDy20 = (fYB[1]-fYB[0])/20.;
1654 for (Int_t i=0;i<6;i++) fN5[i] =0;
1655 for (Int_t i=0;i<11;i++) fN10[i]=0;
1656 for (Int_t i=0;i<21;i++) fN20[i]=0;
1657 //
1658 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;}
1659 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;}
1660 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;}
1661 //
1662 //
1d4090b7 1663 for (Int_t i=0;i<fN;i++)
1664 for (Int_t irot=-1;irot<=1;irot++){
1665 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1666 // slice 5
1667 for (Int_t slice=0; slice<6;slice++){
e50912db 1668 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1669 fClusters5[slice][fN5[slice]] = fClusters[i];
1670 fY5[slice][fN5[slice]] = curY;
1671 fZ5[slice][fN5[slice]] = fZ[i];
1672 fClusterIndex5[slice][fN5[slice]]=i;
1673 fN5[slice]++;
1674 }
e43c066c 1675 }
1d4090b7 1676 // slice 10
1677 for (Int_t slice=0; slice<11;slice++){
e50912db 1678 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1679 fClusters10[slice][fN10[slice]] = fClusters[i];
1680 fY10[slice][fN10[slice]] = curY;
1681 fZ10[slice][fN10[slice]] = fZ[i];
1682 fClusterIndex10[slice][fN10[slice]]=i;
1683 fN10[slice]++;
1684 }
e43c066c 1685 }
1d4090b7 1686 // slice 20
1687 for (Int_t slice=0; slice<21;slice++){
e50912db 1688 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1689 fClusters20[slice][fN20[slice]] = fClusters[i];
1690 fY20[slice][fN20[slice]] = curY;
1691 fZ20[slice][fN20[slice]] = fZ[i];
1692 fClusterIndex20[slice][fN20[slice]]=i;
1693 fN20[slice]++;
1694 }
1695 }
e43c066c 1696 }
1d4090b7 1697
1698 //
1699 // consistency check
1700 //
1701 for (Int_t i=0;i<fN-1;i++){
1702 if (fZ[i]>fZ[i+1]){
ae00569a 1703 printf("Bug\n");
e43c066c 1704 }
1705 }
1d4090b7 1706 //
1707 for (Int_t slice=0;slice<21;slice++)
1708 for (Int_t i=0;i<fN20[slice]-1;i++){
1709 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1710 printf("Bug\n");
1d4090b7 1711 }
1712 }
1713
1714
e43c066c 1715}
44347160 1716//------------------------------------------------------------------------
e43c066c 1717Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1718 //--------------------------------------------------------------------
1719 // This function returns the index of the nearest cluster
1720 //--------------------------------------------------------------------
1721 Int_t ncl=0;
1722 const Float_t *zcl;
1723 if (fCurrentSlice<0) {
1724 ncl = fN;
1725 zcl = fZ;
1726 }
1727 else{
1728 ncl = fNcs;
1729 zcl = fZcs;;
1730 }
1731
1732 if (ncl==0) return 0;
1733 Int_t b=0, e=ncl-1, m=(b+e)/2;
1734 for (; b<e; m=(b+e)/2) {
1735 // if (z > fClusters[m]->GetZ()) b=m+1;
1736 if (z > zcl[m]) b=m+1;
1737 else e=m;
1738 }
1739 return m;
1740}
44347160 1741//------------------------------------------------------------------------
1c97ce2f 1742Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1743 //--------------------------------------------------------------------
1744 // This function computes the rectangular road for this track
1745 //--------------------------------------------------------------------
1746
1747
1748 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1749 // take into account the misalignment: propagate track to misaligned detector plane
1750 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1751
1752 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1753 TMath::Sqrt(track->GetSigmaZ2() +
1754 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1755 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1756 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1757 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1758 TMath::Sqrt(track->GetSigmaY2() +
1759 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1760 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1761 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1762
1763 // track at boundary between detectors, enlarge road
1764 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1765 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1766 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1767 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1768 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1769 Float_t tgl = TMath::Abs(track->GetTgl());
1770 if (tgl > 1.) tgl=1.;
1771 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1772 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1773 Float_t snp = TMath::Abs(track->GetSnp());
1774 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1775 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1776 } // boundary
1777
1778 // add to the road a term (up to 2-3 mm) to deal with misalignments
1779 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1780 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1781
1782 Double_t r = fgLayers[ilayer].GetR();
1783 zmin = track->GetZ() - dz;
1784 zmax = track->GetZ() + dz;
1785 ymin = track->GetY() + r*det.GetPhi() - dy;
1786 ymax = track->GetY() + r*det.GetPhi() + dy;
1787
1788 // bring track back to idead detector plane
1789 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1790
1791 return kTRUE;
1792}
1793//------------------------------------------------------------------------
e43c066c 1794void AliITStrackerMI::AliITSlayer::
1795SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1796 //--------------------------------------------------------------------
1797 // This function sets the "window"
1798 //--------------------------------------------------------------------
1799
628e7bb0 1800 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1801 fYmin = ymin;
1802 fYmax = ymax;
1803 fZmin = zmin;
1804 fZmax = zmax;
1805 // AD
1806 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1807 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1808 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1809 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1810 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1811
e43c066c 1812 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1813 if (ymiddle<fYB[0]) {
1814 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1815 } else if (ymiddle>fYB[1]) {
1816 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1817 }
ae00569a 1818
e43c066c 1819 //
1820 fCurrentSlice =-1;
1821 // defualt take all
1822 fClustersCs = fClusters;
1823 fClusterIndexCs = fClusterIndex;
1824 fYcs = fY;
1825 fZcs = fZ;
1826 fNcs = fN;
628e7bb0 1827 //
e43c066c 1828 //is in 20 slice?
1829 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1830 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1831 if (slice<0) slice=0;
1832 if (slice>20) slice=20;
1833 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1834 if (isOK) {
1835 fCurrentSlice=slice;
1836 fClustersCs = fClusters20[fCurrentSlice];
1837 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1838 fYcs = fY20[fCurrentSlice];
1839 fZcs = fZ20[fCurrentSlice];
1840 fNcs = fN20[fCurrentSlice];
1841 }
1842 }
1843 //
1844 //is in 10 slice?
1845 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1846 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1847 if (slice<0) slice=0;
1848 if (slice>10) slice=10;
1849 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1850 if (isOK) {
1851 fCurrentSlice=slice;
1852 fClustersCs = fClusters10[fCurrentSlice];
1853 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1854 fYcs = fY10[fCurrentSlice];
1855 fZcs = fZ10[fCurrentSlice];
1856 fNcs = fN10[fCurrentSlice];
1857 }
1858 }
1859 //
1860 //is in 5 slice?
1861 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1862 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1863 if (slice<0) slice=0;
1864 if (slice>5) slice=5;
1865 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1866 if (isOK) {
e43c066c 1867 fCurrentSlice=slice;
1868 fClustersCs = fClusters5[fCurrentSlice];
1869 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1870 fYcs = fY5[fCurrentSlice];
1871 fZcs = fZ5[fCurrentSlice];
1872 fNcs = fN5[fCurrentSlice];
1873 }
1874 }
628e7bb0 1875 //
d9ead1a0 1876 fI = FindClusterIndex(fZmin);
1877 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1878 fSkip = 0;
1879 fAccepted = 0;
6518a6c5 1880
1881 return;
e43c066c 1882}
44347160 1883//------------------------------------------------------------------------
628e7bb0 1884Int_t AliITStrackerMI::AliITSlayer::
1885FindDetectorIndex(Double_t phi, Double_t z) const {
1886 //--------------------------------------------------------------------
1887 //This function finds the detector crossed by the track
1888 //--------------------------------------------------------------------
31fb8575 1889 Double_t dphi;
1890 if (fZOffset<0) // old geometry
1891 dphi = -(phi-fPhiOffset);
1892 else // new geometry
1893 dphi = phi-fPhiOffset;
1894
6518a6c5 1895
628e7bb0 1896 if (dphi < 0) dphi += 2*TMath::Pi();
1897 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1898 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1899 if (np>=fNladders) np-=fNladders;
1900 if (np<0) np+=fNladders;
1901
6518a6c5 1902
628e7bb0 1903 Double_t dz=fZOffset-z;
6518a6c5 1904 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1905 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
628e7bb0 1906 if (nz>=fNdetectors) return -1;
1907 if (nz<0) return -1;
1908
23197852 1909 // ad hoc correction for 3rd ladder of SDD inner layer,
1910 // which is reversed (rotated by pi around local y)
1911 // this correction is OK only from AliITSv11Hybrid onwards
1912 if (GetR()>12. && GetR()<20.) { // SDD inner
1913 if(np==2) { // 3rd ladder
6801b453 1914 Double_t posMod252[3];
1915 AliITSgeomTGeo::GetTranslation(252,posMod252);
1916 // check the Z coordinate of Mod 252: if negative
1917 // (old SDD geometry in AliITSv11Hybrid)
1918 // the swap of numeration whould be applied
1919 if(posMod252[2]<0.){
1920 nz = (fNdetectors-1) - nz;
1921 }
1922 }
23197852 1923 }
1924 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1925
1926
628e7bb0 1927 return np*fNdetectors + nz;
1928}
44347160 1929//------------------------------------------------------------------------
ae00569a 1930const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1931{
e43c066c 1932 //--------------------------------------------------------------------
1933 // This function returns clusters within the "window"
1934 //--------------------------------------------------------------------
1935
ae00569a 1936 if (fCurrentSlice<0) {
e43c066c 1937 Double_t rpi2 = 2.*fR*TMath::Pi();
1938 for (Int_t i=fI; i<fImax; i++) {
1939 Double_t y = fY[i];
d9ead1a0 1940 Double_t z = fZ[i];
e43c066c 1941 if (fYmax<y) y -= rpi2;
1d4090b7 1942 if (fYmin>y) y += rpi2;
e43c066c 1943 if (y<fYmin) continue;
1944 if (y>fYmax) continue;
d9ead1a0 1945 // AD
1946 // skip clusters that are in "extended" road but they
1947 // 3sigma error does not touch the original road
1948 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1949 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1950 //
e43c066c 1951 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1952 ci=i;
ae00569a 1953 if (!test) fI=i+1;
e43c066c 1954 return fClusters[i];
1955 }
ae00569a 1956 } else {
e43c066c 1957 for (Int_t i=fI; i<fImax; i++) {
1958 if (fYcs[i]<fYmin) continue;
1959 if (fYcs[i]>fYmax) continue;
1960 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1961 ci=fClusterIndexCs[i];
ae00569a 1962 if (!test) fI=i+1;
e43c066c 1963 return fClustersCs[i];
1964 }
1965 }
1966 return 0;
1967}
44347160 1968//------------------------------------------------------------------------
e43c066c 1969Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1970const {
1971 //--------------------------------------------------------------------
afd25725 1972 // This function returns the layer thickness at this point (units X0)
e43c066c 1973 //--------------------------------------------------------------------
1974 Double_t d=0.0085;
e50912db 1975 x0=AliITSRecoParam::GetX0Air();
e43c066c 1976 if (43<fR&&fR<45) { //SSD2
1977 Double_t dd=0.0034;
1978 d=dd;
1979 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1980 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1981 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1982 for (Int_t i=0; i<12; i++) {
1983 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1984 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1985 d+=0.0034;
1986 break;
1987 }
1988 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1989 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1990 d+=0.0034;
1991 break;
1992 }
1993 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1994 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1995 }
1996 } else
1997 if (37<fR&&fR<41) { //SSD1
1998 Double_t dd=0.0034;
1999 d=dd;
2000 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2001 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2002 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2003 for (Int_t i=0; i<11; i++) {
2004 if (TMath::Abs(z-3.9*i)<0.15) {
2005 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2006 d+=dd;
2007 break;
2008 }
2009 if (TMath::Abs(z+3.9*i)<0.15) {
2010 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2011 d+=dd;
2012 break;
2013 }
2014 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2015 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2016 }
2017 } else
2018 if (13<fR&&fR<26) { //SDD
2019 Double_t dd=0.0033;
2020 d=dd;
2021 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2022
2023 if (TMath::Abs(y-1.80)<0.55) {
2024 d+=0.016;
2025 for (Int_t j=0; j<20; j++) {
2026 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2027 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2028 }
2029 }
2030 if (TMath::Abs(y+1.80)<0.55) {
2031 d+=0.016;
2032 for (Int_t j=0; j<20; j++) {
2033 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2034 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2035 }
2036 }
2037
2038 for (Int_t i=0; i<4; i++) {
2039 if (TMath::Abs(z-7.3*i)<0.60) {
2040 d+=dd;
2041 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2042 break;
2043 }
2044 if (TMath::Abs(z+7.3*i)<0.60) {
2045 d+=dd;
2046 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2047 break;
2048 }
2049 }
2050 } else
2051 if (6<fR&&fR<8) { //SPD2
2052 Double_t dd=0.0063; x0=21.5;
2053 d=dd;
2054 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2055 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2056 } else
2057 if (3<fR&&fR<5) { //SPD1
2058 Double_t dd=0.0063; x0=21.5;
2059 d=dd;
2060 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2061 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2062 }
2063
2064 return d;
2065}
44347160 2066//------------------------------------------------------------------------
23197852 2067AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2068fR(det.fR),
1c97ce2f 2069fRmisal(det.fRmisal),
23197852 2070fPhi(det.fPhi),
2071fSinPhi(det.fSinPhi),
2072fCosPhi(det.fCosPhi),
2073fYmin(det.fYmin),
2074fYmax(det.fYmax),
2075fZmin(det.fZmin),
2076fZmax(det.fZmax),
2077fIsBad(det.fIsBad),
2078fNChips(det.fNChips),
2079fChipIsBad(det.fChipIsBad)
2080{
2081 //Copy constructor
2082}
2083//------------------------------------------------------------------------
2084void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2085 const AliITSDetTypeRec *detTypeRec)
23197852 2086{
2087 //--------------------------------------------------------------------
2088 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2089 //--------------------------------------------------------------------
2090
2091 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2092 // while in the tracker they start from 0 for each layer
2093 for(Int_t il=0; il<ilayer; il++)
2094 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2095
2096 Int_t detType;
2097 if (ilayer==0 || ilayer==1) { // ---------- SPD
2098 detType = 0;
2099 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2100 detType = 1;
2101 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2102 detType = 2;
2103 } else {
2104 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2105 return;
2106 }
2107
2108 // Get calibration from AliITSDetTypeRec
2109 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2110 calib->SetModuleIndex(idet);
23197852 2111 AliITSCalibration *calibSPDdead = 0;
2112 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2113 if (calib->IsBad() ||
2114 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2115 {
2116 SetBad();
359ac74d 2117 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2118 }
2119
2120 // Get segmentation from AliITSDetTypeRec
2121 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2122
2123 // Read info about bad chips
2124 fNChips = segm->GetMaximumChipIndex()+1;
2125 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2126 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2127 fChipIsBad = new Bool_t[fNChips];
2128 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2129 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2130 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2131 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2132 }
2133
2134 return;
2135}
2136//------------------------------------------------------------------------
e50912db 2137Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2138{
2139 //--------------------------------------------------------------------
afd25725 2140 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2141 //--------------------------------------------------------------------
e43c066c 2142
e50912db 2143 if(fUseTGeo!=0) {
2144 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2145 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2146 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2147 }
2148
afd25725 2149 // beam pipe
e50912db 2150 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2151 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2152
2153 // layers
2154 Double_t x0=0;
e43c066c 2155 Double_t xn=fgLayers[fI].GetR();
2156 for (Int_t i=0; i<fI; i++) {
2157 Double_t xi=fgLayers[i].GetR();
e50912db 2158 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2159 d+=dLayer*xi*xi;
e43c066c 2160 }
2161
afd25725 2162 // shields
e43c066c 2163 if (fI>1) {
e50912db 2164 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2165 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2166 }
e43c066c 2167 if (fI>3) {
e50912db 2168 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2169 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2170 }
e43c066c 2171 return d/(xn*xn);
2172}
44347160 2173//------------------------------------------------------------------------
e43c066c 2174Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2175 //-------------------------------------------------------------------
e43c066c 2176 // This function returns number of clusters within the "window"
2177 //--------------------------------------------------------------------
2178 Int_t ncl=0;
2179 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2180 const AliITSRecPoint *c=fClusters[i];
e43c066c 2181 if (c->GetZ() > fZmax) break;
2182 if (c->IsUsed()) continue;
2183 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2184 Double_t y=fR*det.GetPhi() + c->GetY();
2185
2186 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2187 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2188
2189 if (y<fYmin) continue;
2190 if (y>fYmax) continue;
2191 ncl++;
2192 }
2193 return ncl;
2194}
44347160 2195//------------------------------------------------------------------------
ae00569a 2196Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2197 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2198{
e43c066c 2199 //--------------------------------------------------------------------
ae00569a 2200 // This function refits the track "track" at the position "x" using
2201 // the clusters from "clusters"
ef7253ac 2202 // If "extra"==kTRUE,
ae00569a 2203 // the clusters from overlapped modules get attached to "track"
7167ae53 2204 // If "planeff"==kTRUE,
2205 // special approach for plane efficiency evaluation is applyed
e43c066c 2206 //--------------------------------------------------------------------
6518a6c5 2207
e50912db 2208 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2209 Int_t k;
e50912db 2210 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2211 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2212 for (k=0; k<nc; k++) {
ae00569a 2213 Int_t idx=clusters->GetClusterIndex(k);
2214 Int_t ilayer=(idx&0xf0000000)>>28;
2215 index[ilayer]=idx;
e43c066c 2216 }
67c1e979 2217
7167ae53 2218 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2219}
44347160 2220//------------------------------------------------------------------------
ae00569a 2221Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2222 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2223{
67c1e979 2224 //--------------------------------------------------------------------
ae00569a 2225 // This function refits the track "track" at the position "x" using
67c1e979 2226 // the clusters from array
ae00569a 2227 // If "extra"==kTRUE,
2228 // the clusters from overlapped modules get attached to "track"
7167ae53 2229 // If "planeff"==kTRUE,
2230 // special approach for plane efficiency evaluation is applyed
67c1e979 2231 //--------------------------------------------------------------------
e50912db 2232 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2233 Int_t k;
e50912db 2234 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2235 //
e50912db 2236 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2237 index[k]=clusters[k];
67c1e979 2238 }
2239
afd25725 2240 // special for cosmics: check which the innermost layer crossed
2241 // by the track
2242 Int_t innermostlayer=5;
ae00569a 2243 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2244 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2245 if(drphi < fgLayers[innermostlayer].GetR()) break;
2246 }
4fa7f7d1 2247 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
afd25725 2248
ae00569a 2249 Int_t modstatus=1; // found
2250 Float_t xloc,zloc;
67c1e979 2251 Int_t from, to, step;
ae00569a 2252 if (xx > track->GetX()) {
e50912db 2253 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2254 step=+1;
2255 } else {
e50912db 2256 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2257 step=-1;
2258 }
ae00569a 2259 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2260
ae00569a 2261 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2262 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2263 Double_t r=layer.GetR();
4fa7f7d1 2264
afd25725 2265 if (step<0 && xx>r) break;
2266
2267 // material between SSD and SDD, SDD and SPD
6518a6c5 2268 Double_t hI=ilayer-0.5*step;
e50912db 2269 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2270 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2271 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2272 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2273
ae00569a 2274
afd25725 2275 Double_t oldGlobXYZ[3];
d1181f10 2276 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2277
67178f34 2278 // continue if we are already beyond this layer
2279 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2280 if(step>0 && oldGlobR > r) continue; // going outward
2281 if(step<0 && oldGlobR < r) continue; // going inward
2282
8602c008 2283 Double_t phi,z;
ae00569a 2284 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2285
67c1e979 2286 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2287
2288 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2289 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2290 if (skip==2) {
ae00569a 2291 modstatus = 4; // out in z
d1181f10 2292 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2293 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2294 }
7131593b 2295 // cross layer
2296 // apply correction for material of the current layer
2297 // add time if going outward
2298 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2299 continue;
2300 }
2301
e50912db 2302 if (idet<0) return kFALSE;
ae00569a 2303
4fa7f7d1 2304
67c1e979 2305 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2306 // only for ITS-SA tracks refit
2307 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2308 //
1c97ce2f 2309 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2310
ae00569a 2311 track->SetDetectorIndex(idet);
d1181f10 2312 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2313
23197852 2314 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2315
2316 const AliITSRecPoint *clAcc=0;
44347160 2317 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2318
6518a6c5 2319 Int_t idx=index[ilayer];
ae00569a 2320 if (idx>=0) { // cluster in this layer
2321 modstatus = 6; // no refit
2322 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2323 if (cl) {
2324 if (idet != cl->GetDetectorIndex()) {
2325 idet=cl->GetDetectorIndex();
a5d0fae6 2326 const AliITSdetector &detc=layer.GetDetector(idet);
2327 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2328 track->SetDetectorIndex(idet);
d1181f10 2329 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2330 }
ae00569a 2331 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2332 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2333 if (chi2<maxchi2) {
2334 clAcc=cl;
2335 maxchi2=chi2;
2336 modstatus = 1; // found
2337 } else {
7167ae53 2338 return kFALSE; //
ae00569a 2339 }
2340 }
2341 } else { // no cluster in this layer
2342 if (skip==1) {
2343 modstatus = 3; // skipped
0ed58a47 2344 // Plane Eff determination:
2345 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2346 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2347 UseTrackForPlaneEff(track,ilayer);
7167ae53 2348 }
ae00569a 2349 } else {
2350 modstatus = 5; // no cls in road
2351 // check dead
1c97ce2f 2352 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2353 dz = 0.5*(zmax-zmin);
2354 dy = 0.5*(ymax-ymin);
2355 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2356 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2357 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2358 }
e43c066c 2359 }
ae00569a 2360
2361 if (clAcc) {
2362 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2363 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2364 }
ae00569a 2365 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2366
2367
2368 if (extra) { // search for extra clusters in overlapped modules
2369 AliITStrackV2 tmp(*track);
1c97ce2f 2370 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2371 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2372
2373 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2374 Int_t idetExtra=-1;
a5d0fae6 2375 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2376 Double_t tolerance=0.1;
ae00569a 2377 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2378 // only clusters in another module! (overlaps)
2379 idetExtra = clExtra->GetDetectorIndex();
2380 if (idet == idetExtra) continue;
2381
a5d0fae6 2382 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2383
1c97ce2f 2384 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2385 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2386 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2387 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2388
2389 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2390 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2391 }
2392 if (cci>=0) {
2393 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2394 track->SetExtraModule(ilayer,idetExtra);
2395 }
2396 } // end search for extra clusters in overlapped modules
1c97ce2f 2397
afd25725 2398 // Correct for material of the current layer
7131593b 2399 // cross material
2400 // add time if going outward
ae00569a 2401 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2402 track->SetCheckInvariant(kTRUE);
ae00569a 2403 } // end loop on layers
2404
db355ee7 2405 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2406
e43c066c 2407 return kTRUE;
2408}
44347160 2409//------------------------------------------------------------------------
15dd636f 2410Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2411{
2412 //
2413 // calculate normalized chi2
2414 // return NormalizedChi2(track,0);
2415 Float_t chi2 = 0;
2416 Float_t sum=0;
2417 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2418 // track->fdEdxMismatch=0;
2419 Float_t dedxmismatch =0;
2420 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2421 if (mode<100){
2422 for (Int_t i = 0;i<6;i++){
9fd412a8 2423 if (track->GetClIndex(i)>=0){
e43c066c 2424 Float_t cerry, cerrz;
2425 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2426 else
b9671574 2427 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2428 cerry*=cerry;
2429 cerrz*=cerrz;
b9671574 2430 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2431 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2432 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2433 if (ratio<0.5) {
2434 cchi2+=(0.5-ratio)*10.;
2435 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2436 dedxmismatch+=(0.5-ratio)*10.;
2437 }
2438 }
2439 if (i<2 ||i>3){
b9671574 2440 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2441 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2442 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2443 if (i<2) chi2+=2*cl->GetDeltaProbability();
2444 }
2445 chi2+=cchi2;
2446 sum++;
2447 }
2448 }
b9671574 2449 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2450 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2451 }
2452 }
2453 else{
2454 for (Int_t i = 0;i<4;i++){
9fd412a8 2455 if (track->GetClIndex(i)>=0){
e43c066c 2456 Float_t cerry, cerrz;
2457 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2458 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2459 cerry*=cerry;
2460 cerrz*=cerrz;
b9671574 2461 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2462 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2463 sum++;
2464 }
2465 }
2466 for (Int_t i = 4;i<6;i++){
9fd412a8 2467 if (track->GetClIndex(i)>=0){
e43c066c 2468 Float_t cerry, cerrz;
2469 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2470 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2471 cerry*=cerry;
2472 cerrz*=cerrz;
2473 Float_t cerryb, cerrzb;
2474 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2475 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2476 cerryb*=cerryb;
2477 cerrzb*=cerrzb;
b9671574 2478 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2479 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2480 sum++;
2481 }
2482 }
2483 }
b9671574 2484 if (track->GetESDtrack()->GetTPCsignal()>85){
2485 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2486 if (ratio<0.5) {
2487 chi2+=(0.5-ratio)*5.;
2488 }
2489 if (ratio>2){
2490 chi2+=(ratio-2.0)*3;
2491 }
2492 }
2493 //
b9671574 2494 Double_t match = TMath::Sqrt(track->GetChi22());
2495 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2496 if (!track->GetConstrain()) {
2497 if (track->GetNumberOfClusters()>2) {
2498 match/=track->GetNumberOfClusters()-2.;
2499 } else {
2500 match=0;
2501 }
2502 }
e43c066c 2503 if (match<0) match=0;
f8720bda 2504
2505 // penalty factor for missing points (NDeadZone>0), but no penalty
2506 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2507 // or there is a dead from OCDB)
2508 Float_t deadzonefactor = 0.;
2509 if (track->GetNDeadZone()>0.) {
2510 Float_t sumDeadZoneProbability=0;
2511 for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay);
2512 Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2513 if(nDeadZoneWithProbNot1>0.) {
2514 Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability);
2515 deadZoneProbability /= nDeadZoneWithProbNot1;
2516 deadzonefactor = 3.*(1.1-deadZoneProbability);
2517 }
2518 }
2519
b9671574 2520 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2521 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2522 1./(1.+track->GetNSkipped()));
e43c066c 2523
2524 return normchi2;
2525}
44347160 2526//------------------------------------------------------------------------
a70ed6ad 2527Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2528{
2529 //
2530 // return matching chi2 between two tracks
d1181f10 2531 Double_t largeChi2=1000.;
2532
15dd636f 2533 AliITStrackMI track3(*track2);
d1181f10 2534 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2535 TMatrixD vec(5,1);
6c94f330 2536 vec(0,0)=track1->GetY() - track3.GetY();
2537 vec(1,0)=track1->GetZ() - track3.GetZ();
2538 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2539 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2540 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2541 //
2542 TMatrixD cov(5,5);
6c94f330 2543 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2544 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2545 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2546 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2547 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2548
6c94f330 2549 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2550 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2551 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2552 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2553 //
6c94f330 2554 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2555 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2556 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2557 //
6c94f330 2558 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2559 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2560 //
6c94f330 2561 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2562
2563 cov.Invert();
2564 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2565 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2566 return chi2(0,0);
2567}
44347160 2568//------------------------------------------------------------------------
a70ed6ad 2569Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2570{
2571 //
afd25725 2572 // return probability that given point (characterized by z position and error)
2573 // is in SPD dead zone
e43c066c 2574 //
afd25725 2575 Double_t probability = 0.;
e43c066c 2576 Double_t absz = TMath::Abs(zpos);
afd25725 2577 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2578 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2579 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2580 Double_t zmin, zmax;
2581 if (zpos<-6.) { // dead zone at z = -7
e50912db 2582 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2583 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2584 } else if (zpos>6.) { // dead zone at z = +7
e50912db 2585 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2586 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2587 } else if (absz<2.) { // dead zone at z = 0
e50912db 2588 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2589 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2590 } else {
2591 zmin = 0.;
2592 zmax = 0.;
e43c066c 2593 }
afd25725 2594 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2595 // dead zone)
2596 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2597 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
e43c066c 2598 return probability;
2599}
44347160 2600//------------------------------------------------------------------------
a70ed6ad 2601Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2602{
2603 //
2604 // calculate normalized chi2
2605 Float_t chi2[6];
2606 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2607 Float_t ncl = 0;
2608 for (Int_t i = 0;i<6;i++){
b9671574 2609 if (TMath::Abs(track->GetDy(i))>0){
2610 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2611 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2612 ncl++;
2613 }
2614 else{chi2[i]=10000;}
2615 }
2616 Int_t index[6];
2617 TMath::Sort(6,chi2,index,kFALSE);
2618 Float_t max = float(ncl)*fac-1.;
2619 Float_t sumchi=0, sumweight=0;
2620 for (Int_t i=0;i<max+1;i++){
2621 Float_t weight = (i<max)?1.:(max+1.-i);
2622 sumchi+=weight*chi2[index[i]];
2623 sumweight+=weight;
2624 }
2625 Double_t normchi2 = sumchi/sumweight;
2626 return normchi2;
2627}
44347160 2628//------------------------------------------------------------------------
a70ed6ad 2629Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2630{
2631 //
2632 // calculate normalized chi2
2633 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2634 Int_t npoints = 0;
2635 Double_t res =0;
2636 for (Int_t i=0;i<6;i++){
b9671574 2637 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2638 Double_t sy1 = forwardtrack->GetSigmaY(i);
2639 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2640 Double_t sy2 = backtrack->GetSigmaY(i);
2641 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2642 if (i<2){ sy2=1000.;sz2=1000;}
2643 //
b9671574 2644 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2645 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2646 //
2647 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2648 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2649 //
2650 res+= nz0*nz0+ny0*ny0;
2651 npoints++;
2652 }
2653 if (npoints>1) return
6c23ffed 2654 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2655 //2*forwardtrack->fNUsed+
b9671574 2656 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2657 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2658 return 1000;
2659}
44347160 2660//------------------------------------------------------------------------
e43c066c 2661Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2662 //--------------------------------------------------------------------
2663 // Return pointer to a given cluster
2664 //--------------------------------------------------------------------
2665 Int_t l=(index & 0xf0000000) >> 28;
2666 Int_t c=(index & 0x0fffffff) >> 00;
2667 return fgLayers[l].GetWeight(c);
2668}
44347160 2669//------------------------------------------------------------------------
a70ed6ad 2670void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2671{
2672 //---------------------------------------------
2673 // register track to the list
628e7bb0 2674 //
b9671574 2675 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2676 //
2677 //
e43c066c 2678 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2679 Int_t index = track->GetClusterIndex(icluster);
2680 Int_t l=(index & 0xf0000000) >> 28;
2681 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2682 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2683 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2684 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2685 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2686 break;
2687 }
2688 }
2689 }
2690}
44347160 2691//------------------------------------------------------------------------
a70ed6ad 2692void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2693{
2694 //---------------------------------------------
2695 // unregister track from the list
2696 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2697 Int_t index = track->GetClusterIndex(icluster);
2698 Int_t l=(index & 0xf0000000) >> 28;
2699 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2700 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2701 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2702 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2703 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2704 }
2705 }
2706 }
2707}
44347160 2708//------------------------------------------------------------------------
00a7cc50 2709Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2710{
2711 //-------------------------------------------------------------
2712 //get number of shared clusters
2713 //-------------------------------------------------------------
2714 Float_t shared=0;
2715 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2716 // mean number of clusters
2717 Float_t *ny = GetNy(id), *nz = GetNz(id);
2718
2719
2720 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2721 Int_t index = track->GetClusterIndex(icluster);
2722 Int_t l=(index & 0xf0000000) >> 28;
2723 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2724 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2725 if (ny[l]==0){
2726 printf("problem\n");
2727 }
00a7cc50 2728 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2729 Float_t weight=1;
2730 //
2731 Float_t deltan = 0;
2732 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2733 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2734 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2735 if (l<2 || l>3){
2736 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2737 }
2738 else{
2739 deltan = (cl->GetNz()-nz[l]);
2740 }
2741 if (deltan>2.0) continue; // extended - highly probable shared cluster
2742 weight = 2./TMath::Max(3.+deltan,2.);
2743 //
2744 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2745 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2746 list[l]=index;
00a7cc50 2747 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2748 shared+=weight;
2749 break;
2750 }
2751 }
2752 }
b9671574 2753 track->SetNUsed(shared);
e43c066c 2754 return shared;
2755}
44347160 2756//------------------------------------------------------------------------
a70ed6ad 2757Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2758{
2759 //
2760 // find first shared track
2761 //
2762 // mean number of clusters
2763 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2764 //
2765 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2766 Int_t sharedtrack=100000;
2767 Int_t tracks[24],trackindex=0;
2768 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2769 //
2770 for (Int_t icluster=0;icluster<6;icluster++){
2771 if (clusterlist[icluster]<0) continue;
2772 Int_t index = clusterlist[icluster];
2773 Int_t l=(index & 0xf0000000) >> 28;
2774 Int_t c=(index & 0x0fffffff) >> 00;
2775 if (ny[l]==0){
2776 printf("problem\n");
2777 }
b9671574 2778 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2779 //if (l>3) continue;
00a7cc50 2780 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2781 //
2782 Float_t deltan = 0;
2783 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2784 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2785 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2786 if (l<2 || l>3){
2787 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2788 }
2789 else{
2790 deltan = (cl->GetNz()-nz[l]);
2791 }
2792 if (deltan>2.0) continue; // extended - highly probable shared cluster
2793 //
2794 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2795 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2796 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2797 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2798 trackindex++;
2799 }
2800 }
2801 }
2802 if (trackindex==0) return -1;
2803 if (trackindex==1){
2804 sharedtrack = tracks[0];
2805 }else{
2806 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2807 else{
2808 //
a5d0fae6 2809 Int_t tracks2[24], cluster[24];
2810 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2811 Int_t index =0;
2812 //
2813 for (Int_t i=0;i<trackindex;i++){
2814 if (tracks[i]<0) continue;
a5d0fae6 2815 tracks2[index] = tracks[i];
e43c066c 2816 cluster[index]++;
2817 for (Int_t j=i+1;j<trackindex;j++){
2818 if (tracks[j]<0) continue;
2819 if (tracks[j]==tracks[i]){
2820 cluster[index]++;
2821 tracks[j]=-1;
2822 }
2823 }
2824 index++;
2825 }
2826 Int_t max=0;
2827 for (Int_t i=0;i<index;i++){
2828 if (cluster[index]>max) {
a5d0fae6 2829 sharedtrack=tracks2[index];
e43c066c 2830 max=cluster[index];
2831 }
2832 }
2833 }
2834 }
2835
2836 if (sharedtrack>=100000) return -1;
2837 //
2838 // make list of overlaps
2839 shared =0;
2840 for (Int_t icluster=0;icluster<6;icluster++){
2841 if (clusterlist[icluster]<0) continue;
2842 Int_t index = clusterlist[icluster];
2843 Int_t l=(index & 0xf0000000) >> 28;
2844 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2845 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2846 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2847 if (l==0 || l==1){
2848 if (cl->GetNy()>2) continue;
2849 if (cl->GetNz()>2) continue;
2850 }
2851 if (l==4 || l==5){
2852 if (cl->GetNy()>3) continue;
2853 if (cl->GetNz()>3) continue;
2854 }
2855 //
2856 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2857 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2858 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2859 overlist[l]=index;
2860 shared++;
2861 }
2862 }
2863 }
2864 return sharedtrack;
2865}
44347160 2866//------------------------------------------------------------------------
15dd636f 2867AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2868 //
2869 // try to find track hypothesys without conflicts
2870 // with minimal chi2;
2871 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2872 Int_t entries1 = arr1->GetEntriesFast();
2873 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2874 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2875 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2876 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2877 //
15dd636f 2878 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2879 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2880 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2881
2882 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2883 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2884 UnRegisterClusterTracks(track,trackID1);
2885 }
2886 //
2887 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2888 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2889 UnRegisterClusterTracks(track,trackID2);
2890 }
2891 Int_t index1=0;
2892 Int_t index2=0;
2893 Float_t maxconflicts=6;
2894 Double_t maxchi2 =1000.;
2895 //
2896 // get weight of hypothesys - using best hypothesy
2897 Double_t w1,w2;
2898
2899 Int_t list1[6],list2[6];
00a7cc50 2900 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2901 RegisterClusterTracks(track10,trackID1);
2902 RegisterClusterTracks(track20,trackID2);
2903 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2904 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2905 UnRegisterClusterTracks(track10,trackID1);
2906 UnRegisterClusterTracks(track20,trackID2);
2907 //
2908 // normalized chi2
2909 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2910 Float_t nerry[6],nerrz[6];
2911 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2912 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2913 for (Int_t i=0;i<6;i++){
2914 if ( (erry1[i]>0) && (erry2[i]>0)) {
2915 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2916 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2917 }else{
2918 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2919 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2920 }
b9671574 2921 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2922 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2923 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2924 ncl1++;
2925 }
b9671574 2926 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2927 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2928 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2929 ncl2++;
2930 }
2931 }
2932 chi21/=ncl1;
2933 chi22/=ncl2;
2934 //
2935 //
b9671574 2936 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2937 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2938 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2939 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2940 //
2941 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2942 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 2943 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2944 );
2945 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2946 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 2947 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 2948 );
2949
2950 Double_t sumw = w1+w2;
2951 w1/=sumw;
2952 w2/=sumw;
2953 if (w1<w2*0.5) {
2954 w1 = (d2+0.5)/(d1+d2+1.);
2955 w2 = (d1+0.5)/(d1+d2+1.);
2956 }
2957 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2958 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2959 //
2960 // get pair of "best" hypothesys
2961 //
2962 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2963 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2964
2965 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 2966 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 2967 //if (track1->fFakeRatio>0) continue;
2968 RegisterClusterTracks(track1,trackID1);
2969 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 2970 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 2971
2972 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2973 //if (track2->fFakeRatio>0) continue;
2974 Float_t nskipped=0;
2975