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Increased size of collection in Merge and protected SaveHistograms
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e43c066c 1/**************************************************************************
9a5326b1 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
fddf8459 15/* $Id$ */
bf6adc12 16
e43c066c 17//-------------------------------------------------------------------------
18// Implementation of the ITS tracker class
00a7cc50 19// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
e43c066c 20// and fills with them the ESD
15dd636f 21// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 22// Current support and development:
23// Andrea Dainese, andrea.dainese@lnl.infn.it
afd25725 24// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
25// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
26// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
e43c066c 27//-------------------------------------------------------------------------
bf6adc12 28
29#include <TMatrixD.h>
e43c066c 30#include <TTree.h>
afd25725 31#include <TDatabasePDG.h>
9a5326b1 32#include <TString.h>
e50912db 33#include <TRandom.h>
a70ed6ad 34#include <TTreeStream.h>
879cdb02 35#include <TVector3.h>
bf6adc12 36
4187a601 37#include "AliLog.h"
88e3c173 38#include "AliGeomManager.h"
a70ed6ad 39#include "AliITSPlaneEff.h"
a70ed6ad 40#include "AliTrackPointArray.h"
af885e0f 41#include "AliESDEvent.h"
aad72f45 42#include "AliESDtrack.h"
6c94f330 43#include "AliV0.h"
a70ed6ad 44#include "AliITSChannelStatus.h"
45#include "AliITSDetTypeRec.h"
00a7cc50 46#include "AliITSRecPoint.h"
2b295109 47#include "AliITSRecPointContainer.h"
e341247d 48#include "AliITSgeomTGeo.h"
44347160 49#include "AliITSReconstructor.h"
572f41f9 50#include "AliITSClusterParam.h"
23197852 51#include "AliITSsegmentation.h"
52#include "AliITSCalibration.h"
7167ae53 53#include "AliITSPlaneEffSPD.h"
54#include "AliITSPlaneEffSDD.h"
55#include "AliITSPlaneEffSSD.h"
44396017 56#include "AliITSV0Finder.h"
ae00569a 57#include "AliITStrackerMI.h"
bb7e41dd 58#include "AliMathBase.h"
e43c066c 59
60ClassImp(AliITStrackerMI)
e43c066c 61
e50912db 62AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
44347160 63
8221b41b 64AliITStrackerMI::AliITStrackerMI():AliTracker(),
65fI(0),
66fBestTrack(),
67fTrackToFollow(),
68fTrackHypothesys(),
69fBestHypothesys(),
70fOriginal(),
71fCurrentEsdTrack(),
72fPass(0),
73fAfterV0(kFALSE),
74fLastLayerToTrackTo(0),
afd25725 75fCoefficients(0),
8221b41b 76fEsd(0),
e50912db 77fTrackingPhase("Default"),
6518a6c5 78fUseTGeo(3),
e50912db 79fNtracks(0),
80fxOverX0Pipe(-1.),
81fxTimesRhoPipe(-1.),
82fxOverX0PipeTrks(0),
83fxTimesRhoPipeTrks(0),
84fxOverX0ShieldTrks(0),
85fxTimesRhoShieldTrks(0),
86fxOverX0LayerTrks(0),
87fxTimesRhoLayerTrks(0),
4a66240a 88fDebugStreamer(0),
23197852 89fITSChannelStatus(0),
a70ed6ad 90fkDetTypeRec(0),
ae00569a 91fPlaneEff(0) {
8221b41b 92 //Default constructor
e50912db 93 Int_t i;
94 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
95 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
96 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
a0b53cc4 97 fOriginal.SetOwner();
8221b41b 98}
44347160 99//------------------------------------------------------------------------
1f3e997f 100AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
e50912db 101fI(AliITSgeomTGeo::GetNLayers()),
8221b41b 102fBestTrack(),
103fTrackToFollow(),
104fTrackHypothesys(),
105fBestHypothesys(),
106fOriginal(),
107fCurrentEsdTrack(),
108fPass(0),
109fAfterV0(kFALSE),
e50912db 110fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
afd25725 111fCoefficients(0),
8221b41b 112fEsd(0),
e50912db 113fTrackingPhase("Default"),
6518a6c5 114fUseTGeo(3),
e50912db 115fNtracks(0),
116fxOverX0Pipe(-1.),
117fxTimesRhoPipe(-1.),
118fxOverX0PipeTrks(0),
119fxTimesRhoPipeTrks(0),
120fxOverX0ShieldTrks(0),
121fxTimesRhoShieldTrks(0),
122fxOverX0LayerTrks(0),
123fxTimesRhoLayerTrks(0),
4a66240a 124fDebugStreamer(0),
23197852 125fITSChannelStatus(0),
a70ed6ad 126fkDetTypeRec(0),
ae00569a 127fPlaneEff(0) {
e43c066c 128 //--------------------------------------------------------------------
129 //This is the AliITStrackerMI constructor
130 //--------------------------------------------------------------------
e341247d 131 if (geom) {
132 AliWarning("\"geom\" is actually a dummy argument !");
133 }
134
a0b53cc4 135 fOriginal.SetOwner();
afd25725 136 fCoefficients = 0;
628e7bb0 137 fAfterV0 = kFALSE;
e341247d 138
e50912db 139 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
e341247d 140 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
141 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
142
143 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
bf1cd124 144 AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
e43c066c 145 Double_t poff=TMath::ATan2(y,x);
146 Double_t zoff=z;
bf1cd124 147
148 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
e341247d 149 Double_t r=TMath::Sqrt(x*x + y*y);
e43c066c 150
e341247d 151 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
e43c066c 152 r += TMath::Sqrt(x*x + y*y);
e341247d 153 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
e43c066c 154 r += TMath::Sqrt(x*x + y*y);
e341247d 155 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
e43c066c 156 r += TMath::Sqrt(x*x + y*y);
157 r*=0.25;
158
159 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
160
161 for (Int_t j=1; j<nlad+1; j++) {
162 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
e341247d 163 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
1f3e997f 164 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
165 m.Multiply(tm);
a5d0fae6 166 Double_t txyz[3]={0.};
167 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
1f3e997f 168 m.LocalToMaster(txyz,xyz);
a5d0fae6 169 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
1f3e997f 170 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
e341247d 171
172 if (phi<0) phi+=TMath::TwoPi();
173 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
174
e43c066c 175 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
176 new(&det) AliITSdetector(r,phi);
1c97ce2f 177 // compute the real radius (with misalignment)
178 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
179 mmisal.Multiply(tm);
180 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
181 mmisal.LocalToMaster(txyz,xyz);
182 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
183 det.SetRmisal(rmisal);
184
23197852 185 } // end loop on detectors
186 } // end loop on ladders
4fa7f7d1 187 fForceSkippingOfLayer[i] = 0;
23197852 188 } // end loop on layers
e43c066c 189
e43c066c 190
e50912db 191 fI=AliITSgeomTGeo::GetNLayers();
e43c066c 192
193 fPass=0;
194 fConstraint[0]=1; fConstraint[1]=0;
195
afd25725 196 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
197 AliITSReconstructor::GetRecoParam()->GetYVdef(),
198 AliITSReconstructor::GetRecoParam()->GetZVdef()};
199 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
200 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
201 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
202 SetVertex(xyzVtx,ersVtx);
e43c066c 203
e50912db 204 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
628e7bb0 205 for (Int_t i=0;i<100000;i++){
206 fBestTrackIndex[i]=0;
207 }
afd25725 208
209 // store positions of centre of SPD modules (in z)
bf1cd124 210 // The convetion is that fSPDdetzcentre is ordered from -z to +z
afd25725 211 Double_t tr[3];
c3fd826e 212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
bf1cd124 213 if (tr[2]<0) { // old geom (up to v5asymmPPR)
214 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
215 fSPDdetzcentre[0] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
217 fSPDdetzcentre[1] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
219 fSPDdetzcentre[2] = tr[2];
220 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
221 fSPDdetzcentre[3] = tr[2];
222 } else { // new geom (from v11Hybrid)
223 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
224 fSPDdetzcentre[0] = tr[2];
225 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
226 fSPDdetzcentre[1] = tr[2];
227 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
228 fSPDdetzcentre[2] = tr[2];
229 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
230 fSPDdetzcentre[3] = tr[2];
231 }
afd25725 232
afd25725 233 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
6518a6c5 234 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
235 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
236 fUseTGeo = 3;
237 }
e50912db 238
239 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
240 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
241
c0b60eb0 242 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
243 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
81e97e0d 244
7167ae53 245 // only for plane efficiency evaluation
58e8dc31 246 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
247 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
0ed58a47 248 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
1a64bda6 249 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
0ed58a47 250 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
251 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
252 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
253 else fPlaneEff = new AliITSPlaneEffSSD();
275a301c 254 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
0ed58a47 255 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
256 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
7167ae53 257 }
628e7bb0 258}
44347160 259//------------------------------------------------------------------------
8221b41b 260AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
261fI(tracker.fI),
262fBestTrack(tracker.fBestTrack),
263fTrackToFollow(tracker.fTrackToFollow),
264fTrackHypothesys(tracker.fTrackHypothesys),
265fBestHypothesys(tracker.fBestHypothesys),
266fOriginal(tracker.fOriginal),
267fCurrentEsdTrack(tracker.fCurrentEsdTrack),
268fPass(tracker.fPass),
269fAfterV0(tracker.fAfterV0),
270fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
afd25725 271fCoefficients(tracker.fCoefficients),
8221b41b 272fEsd(tracker.fEsd),
e50912db 273fTrackingPhase(tracker.fTrackingPhase),
afd25725 274fUseTGeo(tracker.fUseTGeo),
e50912db 275fNtracks(tracker.fNtracks),
276fxOverX0Pipe(tracker.fxOverX0Pipe),
277fxTimesRhoPipe(tracker.fxTimesRhoPipe),
278fxOverX0PipeTrks(0),
279fxTimesRhoPipeTrks(0),
280fxOverX0ShieldTrks(0),
281fxTimesRhoShieldTrks(0),
282fxOverX0LayerTrks(0),
283fxTimesRhoLayerTrks(0),
4a66240a 284fDebugStreamer(tracker.fDebugStreamer),
23197852 285fITSChannelStatus(tracker.fITSChannelStatus),
a70ed6ad 286fkDetTypeRec(tracker.fkDetTypeRec),
ae00569a 287fPlaneEff(tracker.fPlaneEff) {
8221b41b 288 //Copy constructor
a0b53cc4 289 fOriginal.SetOwner();
e50912db 290 Int_t i;
291 for(i=0;i<4;i++) {
292 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
293 }
294 for(i=0;i<6;i++) {
295 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
296 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
297 }
298 for(i=0;i<2;i++) {
299 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
300 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
301 }
8221b41b 302}
44347160 303//------------------------------------------------------------------------
8221b41b 304AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
305 //Assignment operator
306 this->~AliITStrackerMI();
307 new(this) AliITStrackerMI(tracker);
308 return *this;
309}
44347160 310//------------------------------------------------------------------------
628e7bb0 311AliITStrackerMI::~AliITStrackerMI()
312{
313 //
314 //destructor
315 //
e50912db 316 if (fCoefficients) delete [] fCoefficients;
317 DeleteTrksMaterialLUT();
81e97e0d 318 if (fDebugStreamer) {
319 //fDebugStreamer->Close();
320 delete fDebugStreamer;
321 }
23197852 322 if(fITSChannelStatus) delete fITSChannelStatus;
323 if(fPlaneEff) delete fPlaneEff;
e43c066c 324}
44347160 325//------------------------------------------------------------------------
23197852 326void AliITStrackerMI::ReadBadFromDetTypeRec() {
327 //--------------------------------------------------------------------
328 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
329 //i.e. from OCDB
330 //--------------------------------------------------------------------
331
332 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
333
4187a601 334 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
23197852 335
a70ed6ad 336 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
23197852 337
338 // ITS channels map
339 if(fITSChannelStatus) delete fITSChannelStatus;
a70ed6ad 340 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
23197852 341
342 // ITS detectors and chips
343 Int_t i=0,j=0,k=0,ndet=0;
344 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
4187a601 345 Int_t nBadDetsPerLayer=0;
23197852 346 ndet=AliITSgeomTGeo::GetNDetectors(i);
347 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
348 for (k=1; k<ndet+1; k++) {
349 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
a70ed6ad 350 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
4187a601 351 if(det.IsBad()) {nBadDetsPerLayer++;}
23197852 352 } // end loop on detectors
353 } // end loop on ladders
4187a601 354 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
23197852 355 } // end loop on layers
356
357 return;
358}
359//------------------------------------------------------------------------
e43c066c 360Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
361 //--------------------------------------------------------------------
362 //This function loads ITS clusters
363 //--------------------------------------------------------------------
2b295109 364
365 TClonesArray *clusters = NULL;
366 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
367 clusters=rpcont->FetchClusters(0,cTree);
368 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
369 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
370 return 1;
e43c066c 371 }
23197852 372 Int_t i=0,j=0,ndet=0;
e43c066c 373 Int_t detector=0;
23197852 374 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
375 ndet=fgLayers[i].GetNdetectors();
e43c066c 376 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
377 for (; j<jmax; j++) {
2b295109 378 // if (!cTree->GetEvent(j)) continue;
379 clusters = rpcont->UncheckedGetClusters(j);
380 if(!clusters)continue;
e43c066c 381 Int_t ncl=clusters->GetEntriesFast();
382 SignDeltas(clusters,GetZ());
1f3e997f 383
e43c066c 384 while (ncl--) {
00a7cc50 385 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
75fb37cc 386 detector=c->GetDetectorIndex();
a504d56f 387
75fb37cc 388 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
6262dd3d 389
390 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
391 if(retval) {
392 AliWarning(Form("Too many clusters on layer %d!",i));
393 break;
394 }
e43c066c 395 }
6262dd3d 396
afd25725 397 // add dead zone "virtual" cluster in SPD, if there is a cluster within
398 // zwindow cm from the dead zone
bf1cd124 399 // This method assumes that fSPDdetzcentre is ordered from -z to +z
afd25725 400 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
e50912db 401 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
afd25725 402 Int_t lab[4] = {0,0,0,detector};
403 Int_t info[3] = {0,0,i};
6518a6c5 404 Float_t q = 0.; // this identifies virtual clusters
afd25725 405 Float_t hit[5] = {xdead,
406 0.,
407 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
408 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
409 q};
410 Bool_t local = kTRUE;
411 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
e50912db 412 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 413 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
414 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 415 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 416 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
417 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 418 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 419 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
420 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 421 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 422 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
423 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 424 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 425 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
426 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e50912db 427 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 428 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
429 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
e43c066c 430 }
6518a6c5 431 } // "virtual" clusters in SPD
e43c066c 432
433 }
434 //
435 fgLayers[i].ResetRoad(); //road defined by the cluster density
436 fgLayers[i].SortClusters();
437 }
438
4fa7f7d1 439 // check whether we have to skip some layers
440 SetForceSkippingOfLayer();
441
e43c066c 442 return 0;
443}
44347160 444//------------------------------------------------------------------------
e43c066c 445void AliITStrackerMI::UnloadClusters() {
446 //--------------------------------------------------------------------
447 //This function unloads ITS clusters
448 //--------------------------------------------------------------------
e50912db 449 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
e43c066c 450}
44347160 451//------------------------------------------------------------------------
23197852 452void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
453 //--------------------------------------------------------------------
454 // Publishes all pointers to clusters known to the tracker into the
455 // passed object array.
456 // The ownership is not transfered - the caller is not expected to delete
457 // the clusters.
458 //--------------------------------------------------------------------
459
460 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
461 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
462 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
463 array->AddLast(cl);
464 }
465 }
466
467 return;
468}
469//------------------------------------------------------------------------
44396017 470Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
e43c066c 471 //--------------------------------------------------------------------
472 // Correction for the material between the TPC and the ITS
e43c066c 473 //--------------------------------------------------------------------
e50912db 474 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
475 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
476 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
477 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
478 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
479 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
480 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
481 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
e43c066c 482 } else {
44396017 483 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
e50912db 484 return 0;
e43c066c 485 }
486
e50912db 487 return 1;
e43c066c 488}
44347160 489//------------------------------------------------------------------------
af885e0f 490Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
e43c066c 491 //--------------------------------------------------------------------
492 // This functions reconstructs ITS tracks
493 // The clusters must be already loaded !
494 //--------------------------------------------------------------------
fddf8459 495
4fa7f7d1 496 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
fddf8459 497
e50912db 498 fTrackingPhase="Clusters2Tracks";
499
e43c066c 500 TObjArray itsTracks(15000);
628e7bb0 501 fOriginal.Clear();
81e97e0d 502 fEsd = event; // store pointer to the esd
afd25725 503
9a5326b1 504 // temporary (for cosmics)
505 if(event->GetVertex()) {
506 TString title = event->GetVertex()->GetTitle();
507 if(title.Contains("cosmics")) {
508 Double_t xyz[3]={GetX(),GetY(),GetZ()};
509 Double_t exyz[3]={0.1,0.1,0.1};
510 SetVertex(xyz,exyz);
511 }
512 }
513 // temporary
75a74b11 514 Int_t noesd = 0;
e43c066c 515 {/* Read ESD tracks */
afd25725 516 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
e43c066c 517 Int_t nentr=event->GetNumberOfTracks();
75a74b11 518 noesd=nentr;
519 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
e43c066c 520 while (nentr--) {
521 AliESDtrack *esd=event->GetTrack(nentr);
4187a601 522 // ---- for debugging:
523 //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 524
525 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
526 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
527 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
51ad6848 528 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
763bdf3e 529 AliITStrackMI *t = new AliITStrackMI(*esd);
b9671574 530 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
531 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
6518a6c5 532
533
afd25725 534 // look at the ESD mass hypothesys !
535 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
e43c066c 536 // write expected q
b9671574 537 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 538
afd25725 539 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
81e97e0d 540 //track - can be V0 according to TPC
afd25725 541 } else {
542 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
81e97e0d 543 delete t;
544 continue;
e50912db 545 }
afd25725 546 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
81e97e0d 547 delete t;
548 continue;
549 }
6c23ffed 550 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
81e97e0d 551 delete t;
552 continue;
553 }
e50912db 554 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
81e97e0d 555 delete t;
556 continue;
557 }
e43c066c 558 }
b9671574 559 t->SetReconstructed(kFALSE);
e43c066c 560 itsTracks.AddLast(t);
628e7bb0 561 fOriginal.AddLast(t);
e43c066c 562 }
563 } /* End Read ESD tracks */
564
565 itsTracks.Sort();
628e7bb0 566 fOriginal.Sort();
e43c066c 567 Int_t nentr=itsTracks.GetEntriesFast();
568 fTrackHypothesys.Expand(nentr);
81e97e0d 569 fBestHypothesys.Expand(nentr);
afd25725 570 MakeCoefficients(nentr);
513ab112 571 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
e43c066c 572 Int_t ntrk=0;
afd25725 573 // THE TWO TRACKING PASSES
e43c066c 574 for (fPass=0; fPass<2; fPass++) {
575 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
e50912db 576 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
e50912db 577 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
e43c066c 578 if (t==0) continue; //this track has been already tracked
1c97ce2f 579 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
b9671574 580 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
791f9a2a 581 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
afd25725 582 if (fConstraint[fPass]) {
583 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
584 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
585 }
e43c066c 586
587 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
4187a601 588 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
e43c066c 589 fI = 6;
590 ResetTrackToFollow(*t);
591 ResetBestTrack();
6518a6c5 592
e50912db 593 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
1c97ce2f 594
e43c066c 595
596 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
597 //
ae00569a 598 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
e43c066c 599 if (!besttrack) continue;
600 besttrack->SetLabel(tpcLabel);
601 // besttrack->CookdEdx();
602 CookdEdx(besttrack);
b9671574 603 besttrack->SetFakeRatio(1.);
e43c066c 604 CookLabel(besttrack,0.); //For comparison only
e43c066c 605 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
628e7bb0 606
628e7bb0 607 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
608
b9671574 609 t->SetReconstructed(kTRUE);
1c97ce2f 610 ntrk++;
4187a601 611 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
e43c066c 612 }
613 GetBestHypothesysMIP(itsTracks);
afd25725 614 } // end loop on the two tracking passes
e43c066c 615
cd90f0a2 616 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
617 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
628e7bb0 618 fAfterV0 = kTRUE;
628e7bb0 619 //
a0b53cc4 620 itsTracks.Clear();
e43c066c 621 //
622 Int_t entries = fTrackHypothesys.GetEntriesFast();
e50912db 623 for (Int_t ientry=0; ientry<entries; ientry++) {
e43c066c 624 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
625 if (array) array->Delete();
626 delete fTrackHypothesys.RemoveAt(ientry);
627 }
628
629 fTrackHypothesys.Delete();
4ffece29 630 entries = fBestHypothesys.GetEntriesFast();
631 for (Int_t ientry=0; ientry<entries; ientry++) {
632 TObjArray * array =(TObjArray*)fBestHypothesys.UncheckedAt(ientry);
633 if (array) array->Delete();
634 delete fBestHypothesys.RemoveAt(ientry);
635 }
81e97e0d 636 fBestHypothesys.Delete();
628e7bb0 637 fOriginal.Clear();
afd25725 638 delete [] fCoefficients;
639 fCoefficients=0;
e50912db 640 DeleteTrksMaterialLUT();
641
75a74b11 642 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
e50912db 643
644 fTrackingPhase="Default";
628e7bb0 645
e43c066c 646 return 0;
647}
44347160 648//------------------------------------------------------------------------
af885e0f 649Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
e43c066c 650 //--------------------------------------------------------------------
651 // This functions propagates reconstructed ITS tracks back
652 // The clusters must be loaded !
653 //--------------------------------------------------------------------
e50912db 654 fTrackingPhase="PropagateBack";
e43c066c 655 Int_t nentr=event->GetNumberOfTracks();
75a74b11 656 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
e43c066c 657
658 Int_t ntrk=0;
659 for (Int_t i=0; i<nentr; i++) {
660 AliESDtrack *esd=event->GetTrack(i);
661
662 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
663 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
664
763bdf3e 665 AliITStrackMI *t = new AliITStrackMI(*esd);
666
b9671574 667 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e43c066c 668
669 ResetTrackToFollow(*t);
4fa7f7d1 670
67178f34 671 /*
9a5326b1 672 // propagate to vertex [SR, GSI 17.02.2003]
e43c066c 673 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
e50912db 674 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
675 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
676 fTrackToFollow.StartTimeIntegral();
677 // from vertex to outside pipe
678 CorrectForPipeMaterial(&fTrackToFollow,"outward");
67178f34 679 }*/
680 // Start time integral and add distance from current position to vertex
681 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
682 fTrackToFollow.GetXYZ(xyzTrk);
683 Double_t dst2 = 0.;
684 for (Int_t icoord=0; icoord<3; icoord++) {
685 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
686 dst2 += di*di;
e43c066c 687 }
67178f34 688 fTrackToFollow.StartTimeIntegral();
689 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
e43c066c 690
6c94f330 691 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
e50912db 692 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
693 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
e43c066c 694 delete t;
695 continue;
696 }
697 fTrackToFollow.SetLabel(t->GetLabel());
698 //fTrackToFollow.CookdEdx();
699 CookLabel(&fTrackToFollow,0.); //For comparison only
700 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
701 //UseClusters(&fTrackToFollow);
702 ntrk++;
703 }
704 delete t;
705 }
706
75a74b11 707 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 708
e50912db 709 fTrackingPhase="Default";
710
e43c066c 711 return 0;
712}
44347160 713//------------------------------------------------------------------------
af885e0f 714Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
e43c066c 715 //--------------------------------------------------------------------
716 // This functions refits ITS tracks using the
717 // "inward propagated" TPC tracks
718 // The clusters must be loaded !
719 //--------------------------------------------------------------------
e50912db 720 fTrackingPhase="RefitInward";
44396017 721
cd90f0a2 722 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
44396017 723
794d9013 724 Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
725 if(!doExtra) AliDebug(2,"Do not search for extra clusters");
726
e43c066c 727 Int_t nentr=event->GetNumberOfTracks();
75a74b11 728 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
e43c066c 729
730 Int_t ntrk=0;
731 for (Int_t i=0; i<nentr; i++) {
732 AliESDtrack *esd=event->GetTrack(i);
733
734 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
735 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
736 if (esd->GetStatus()&AliESDtrack::kTPCout)
737 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
738
763bdf3e 739 AliITStrackMI *t = new AliITStrackMI(*esd);
740
b9671574 741 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
e50912db 742 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
e43c066c 743 delete t;
744 continue;
745 }
746
747 ResetTrackToFollow(*t);
748 fTrackToFollow.ResetClusters();
749
ef3508c5 750 // ITS standalone tracks
751 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
6c94f330 752 fTrackToFollow.ResetCovariance(10.);
ef3508c5 753 // protection for loopers that can have parameters screwed up
754 if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
755 TMath::Abs(fTrackToFollow.GetZ())>1000.) {
756 delete t;
757 continue;
758 }
759 }
e43c066c 760
761 //Refitting...
58e8dc31 762 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
763 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
1a64bda6 764
4187a601 765 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
794d9013 766 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
4187a601 767 AliDebug(2," refit OK");
e43c066c 768 fTrackToFollow.SetLabel(t->GetLabel());
769 // fTrackToFollow.CookdEdx();
770 CookdEdx(&fTrackToFollow);
771
772 CookLabel(&fTrackToFollow,0.0); //For comparison only
773
9a5326b1 774 //The beam pipe
e50912db 775 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
ae00569a 776 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
9a5326b1 777 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
ae00569a 778 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
779 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
f7a1cc68 780 Double_t r[3]={0.,0.,0.};
9a5326b1 781 Double_t maxD=3.;
782 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
783 ntrk++;
e43c066c 784 }
785 }
786 delete t;
787 }
788
75a74b11 789 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
e43c066c 790
e50912db 791 fTrackingPhase="Default";
792
e43c066c 793 return 0;
794}
44347160 795//------------------------------------------------------------------------
e43c066c 796AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
797 //--------------------------------------------------------------------
798 // Return pointer to a given cluster
799 //--------------------------------------------------------------------
800 Int_t l=(index & 0xf0000000) >> 28;
801 Int_t c=(index & 0x0fffffff) >> 00;
802 return fgLayers[l].GetCluster(c);
803}
9a5326b1 804//------------------------------------------------------------------------
df29e9a4 805Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
9a5326b1 806 //--------------------------------------------------------------------
df29e9a4 807 // Get track space point with index i
9a5326b1 808 //--------------------------------------------------------------------
60066577 809
78b03929 810 Int_t l=(index & 0xf0000000) >> 28;
811 Int_t c=(index & 0x0fffffff) >> 00;
00a7cc50 812 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
df29e9a4 813 Int_t idet = cl->GetDetectorIndex();
4e65ff9e 814
60066577 815 Float_t xyz[3];
816 Float_t cov[6];
817 cl->GetGlobalXYZ(xyz);
818 cl->GetGlobalCov(cov);
819 p.SetXYZ(xyz, cov);
be77c8c9 820 p.SetCharge(cl->GetQ());
ebbcf1ea 821 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 822 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 823 p.SetClusterType(cl->GetClusterType());
ae079791 824 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
df29e9a4 825 switch (l) {
826 case 0:
ae079791 827 iLayer = AliGeomManager::kSPD1;
df29e9a4 828 break;
829 case 1:
ae079791 830 iLayer = AliGeomManager::kSPD2;
df29e9a4 831 break;
832 case 2:
ae079791 833 iLayer = AliGeomManager::kSDD1;
df29e9a4 834 break;
835 case 3:
ae079791 836 iLayer = AliGeomManager::kSDD2;
9a5326b1 837 break;
838 case 4:
839 iLayer = AliGeomManager::kSSD1;
840 break;
841 case 5:
842 iLayer = AliGeomManager::kSSD2;
843 break;
844 default:
845 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
846 break;
847 };
848 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
849 p.SetVolumeID((UShort_t)volid);
850 return kTRUE;
851}
852//------------------------------------------------------------------------
853Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
854 AliTrackPoint& p, const AliESDtrack *t) {
855 //--------------------------------------------------------------------
856 // Get track space point with index i
857 // (assign error estimated during the tracking)
858 //--------------------------------------------------------------------
859
860 Int_t l=(index & 0xf0000000) >> 28;
861 Int_t c=(index & 0x0fffffff) >> 00;
862 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
863 Int_t idet = cl->GetDetectorIndex();
4187a601 864
9a5326b1 865 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
866
867 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
868 Float_t detxy[2];
869 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
870 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
871 Double_t alpha = t->GetAlpha();
872 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
242bd643 873 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
9a5326b1 874 phi += alpha-det.GetPhi();
875 Float_t tgphi = TMath::Tan(phi);
876
877 Float_t tgl = t->GetTgl(); // tgl about const along track
878 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
879
d9ead1a0 880 Float_t errtrky,errtrkz,covyz;
8c139cf3 881 Bool_t addMisalErr=kFALSE;
d9ead1a0 882 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
9a5326b1 883
884 Float_t xyz[3];
885 Float_t cov[6];
886 cl->GetGlobalXYZ(xyz);
887 // cl->GetGlobalCov(cov);
888 Float_t pos[3] = {0.,0.,0.};
d9ead1a0 889 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
9a5326b1 890 tmpcl.GetGlobalCov(cov);
891
892 p.SetXYZ(xyz, cov);
be77c8c9 893 p.SetCharge(cl->GetQ());
ebbcf1ea 894 p.SetDriftTime(cl->GetDriftTime());
b7bcc8ed 895 p.SetChargeRatio(cl->GetChargeRatio());
e3901fd8 896 p.SetClusterType(cl->GetClusterType());
9a5326b1 897
898 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
899 switch (l) {
900 case 0:
901 iLayer = AliGeomManager::kSPD1;
902 break;
903 case 1:
904 iLayer = AliGeomManager::kSPD2;
905 break;
906 case 2:
907 iLayer = AliGeomManager::kSDD1;
908 break;
909 case 3:
910 iLayer = AliGeomManager::kSDD2;
df29e9a4 911 break;
912 case 4:
ae079791 913 iLayer = AliGeomManager::kSSD1;
df29e9a4 914 break;
915 case 5:
ae079791 916 iLayer = AliGeomManager::kSSD2;
df29e9a4 917 break;
918 default:
919 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
920 break;
921 };
ae079791 922 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
4187a601 923
df29e9a4 924 p.SetVolumeID((UShort_t)volid);
925 return kTRUE;
926}
44347160 927//------------------------------------------------------------------------
81e97e0d 928void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
e43c066c 929{
930 //--------------------------------------------------------------------
931 // Follow prolongation tree
932 //--------------------------------------------------------------------
81e97e0d 933 //
afd25725 934 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
935 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
936
2755f080 937
b9671574 938 AliESDtrack * esd = otrack->GetESDtrack();
afd25725 939 if (esd->GetV0Index(0)>0) {
81e97e0d 940 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
afd25725 941 // mapping of ESD track is different as ITS track in Containers
81e97e0d 942 // Need something more stable
44347160 943 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
81e97e0d 944 for (Int_t i=0;i<3;i++){
945 Int_t index = esd->GetV0Index(i);
946 if (index==0) break;
d6a49f20 947 AliESDv0 * vertex = fEsd->GetV0(index);
81e97e0d 948 if (vertex->GetStatus()<0) continue; // rejected V0
949 //
afd25725 950 if (esd->GetSign()>0) {
951 vertex->SetIndex(0,esdindex);
952 } else {
953 vertex->SetIndex(1,esdindex);
954 }
81e97e0d 955 }
956 }
957 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
958 if (!bestarray){
959 bestarray = new TObjArray(5);
4ffece29 960 bestarray->SetOwner();
81e97e0d 961 fBestHypothesys.AddAt(bestarray,esdindex);
962 }
e43c066c 963
81e97e0d 964 //
e43c066c 965 //setup tree of the prolongations
966 //
15dd636f 967 static AliITStrackMI tracks[7][100];
968 AliITStrackMI *currenttrack;
969 static AliITStrackMI currenttrack1;
970 static AliITStrackMI currenttrack2;
971 static AliITStrackMI backuptrack;
e43c066c 972 Int_t ntracks[7];
973 Int_t nindexes[7][100];
974 Float_t normalizedchi2[100];
975 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
b9671574 976 otrack->SetNSkipped(0);
15dd636f 977 new (&(tracks[6][0])) AliITStrackMI(*otrack);
e43c066c 978 ntracks[6]=1;
81e97e0d 979 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
ae00569a 980 Int_t modstatus = 1; // found
981 Float_t xloc,zloc;
e43c066c 982 //
983 //
984 // follow prolongations
e50912db 985 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
4187a601 986 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
2755f080 987 fI = ilayer;
e43c066c 988 //
2755f080 989 AliITSlayer &layer=fgLayers[ilayer];
990 Double_t r = layer.GetR();
e43c066c 991 ntracks[ilayer]=0;
992 //
993 //
2755f080 994 Int_t nskipped=0;
e43c066c 995 Float_t nused =0;
e50912db 996 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
e43c066c 997 //set current track
998 if (ntracks[ilayer]>=100) break;
b9671574 999 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
1000 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
e43c066c 1001 if (ntracks[ilayer]>15+ilayer){
b9671574 1002 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
1003 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
e43c066c 1004 }
1005
15dd636f 1006 new(&currenttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
44347160 1007
afd25725 1008 // material between SSD and SDD, SDD and SPD
e50912db 1009 if (ilayer==3)
1010 if(!CorrectForShieldMaterial(&currenttrack1,"SDD","inward")) continue;
1011 if (ilayer==1)
1012 if(!CorrectForShieldMaterial(&currenttrack1,"SPD","inward")) continue;
8602c008 1013
2755f080 1014 // detector number
8602c008 1015 Double_t phi,z;
1016 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
e43c066c 1017 Int_t idet=layer.FindDetectorIndex(phi,z);
e50912db 1018
1019 Double_t trackGlobXYZ1[3];
d1181f10 1020 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
e50912db 1021
2755f080 1022 // Get the budget to the primary vertex for the current track being prolonged
1023 Double_t budgetToPrimVertex = GetEffectiveThickness();
1024
1025 // check if we allow a prolongation without point
6518a6c5 1026 Int_t skip = CheckSkipLayer(&currenttrack1,ilayer,idet);
2755f080 1027 if (skip) {
1028 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
6518a6c5 1029 // propagate to the layer radius
d1181f10 1030 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
9be1d1c7 1031 if(!vtrack->Propagate(xToGo)) continue;
2755f080 1032 // apply correction for material of the current layer
1033 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1034 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
f8720bda 1035 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
9fd412a8 1036 vtrack->SetClIndex(ilayer,-1);
ae00569a 1037 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
d1181f10 1038 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1039 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1040 }
333d86cb 1041 if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
2755f080 1042 ntracks[ilayer]++;
6518a6c5 1043 continue;
2755f080 1044 }
1045
1046 // track outside layer acceptance in z
1047 if (idet<0) continue;
1048
1049 //propagate to the intersection with the detector plane
1050 const AliITSdetector &det=layer.GetDetector(idet);
1051 new(&currenttrack2) AliITStrackMI(currenttrack1);
44347160 1052 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
d1181f10 1053 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
e43c066c 1054 currenttrack1.SetDetectorIndex(idet);
1055 currenttrack2.SetDetectorIndex(idet);
d1181f10 1056 if(!LocalModuleCoord(ilayer,idet,&currenttrack1,xloc,zloc)) continue; // local module coords
6518a6c5 1057
afd25725 1058 //***************
1c97ce2f 1059 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
e43c066c 1060 //
2755f080 1061 // road in global (rphi,z) [i.e. in tracking ref. system]
1c97ce2f 1062 Double_t zmin,zmax,ymin,ymax;
1063 if (!ComputeRoad(&currenttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
2755f080 1064
afd25725 1065 // select clusters in road
e43c066c 1066 layer.SelectClusters(zmin,zmax,ymin,ymax);
afd25725 1067 //********************
44347160 1068
afd25725 1069 // Define criteria for track-cluster association
44347160 1070 Double_t msz = currenttrack1.GetSigmaZ2() +
1071 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1072 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1073 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1074 Double_t msy = currenttrack1.GetSigmaY2() +
1075 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1076 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1077 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1078 if (constrain) {
1079 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1080 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1081 } else {
1082 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1083 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1084 }
1085 msz = 1./msz; // 1/RoadZ^2
1086 msy = 1./msy; // 1/RoadY^2
1c97ce2f 1087
e43c066c 1088 //
e43c066c 1089 //
afd25725 1090 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
e43c066c 1091 //
afd25725 1092 const AliITSRecPoint *cl=0;
1093 Int_t clidx=-1;
1094 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
6518a6c5 1095 Bool_t deadzoneSPD=kFALSE;
e43c066c 1096 currenttrack = &currenttrack1;
6518a6c5 1097
ae00569a 1098 // check if the road contains a dead zone
23197852 1099 Bool_t noClusters = kFALSE;
1100 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
4187a601 1101 if (noClusters) AliDebug(2,"no clusters in road");
1c97ce2f 1102 Double_t dz=0.5*(zmax-zmin);
1103 Double_t dy=0.5*(ymax-ymin);
1104 Int_t dead = CheckDeadZone(&currenttrack1,ilayer,idet,dz,dy,noClusters);
4187a601 1105 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
ae00569a 1106 // create a prolongation without clusters (check also if there are no clusters in the road)
1107 if (dead ||
23197852 1108 (noClusters &&
ae00569a 1109 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
6518a6c5 1110 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1111 updatetrack->SetClIndex(ilayer,-1);
ae00569a 1112 if (dead==0) {
1113 modstatus = 5; // no cls in road
1114 } else if (dead==1) {
1115 modstatus = 7; // holes in z in SPD
f8720bda 1116 } else if (dead==2 || dead==3 || dead==4) {
ae00569a 1117 modstatus = 2; // dead from OCDB
1118 }
1119 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
6518a6c5 1120 // apply correction for material of the current layer
1121 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1122 if (constrain) { // apply vertex constrain
1123 updatetrack->SetConstrain(constrain);
1124 Bool_t isPrim = kTRUE;
1125 if (ilayer<4) { // check that it's close to the vertex
1126 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1127 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1128 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1129 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1130 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1131 }
333d86cb 1132 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
6518a6c5 1133 }
f8720bda 1134 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
ae00569a 1135 if (dead) {
ae00569a 1136 if (dead==1) { // dead zone at z=0,+-7cm in SPD
f8720bda 1137 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1138 deadzoneSPD=kTRUE;
f8720bda 1139 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1140 updatetrack->SetDeadZoneProbability(ilayer,1.);
1141 } else if (dead==4) { // at least a single dead channel from OCDB
1142 updatetrack->SetDeadZoneProbability(ilayer,0.);
1143 }
6518a6c5 1144 }
1145 ntracks[ilayer]++;
1146 }
1147
ae00569a 1148 clidx=-1;
6518a6c5 1149 // loop over clusters in the road
afd25725 1150 while ((cl=layer.GetNextCluster(clidx))!=0) {
e43c066c 1151 if (ntracks[ilayer]>95) break; //space for skipped clusters
afd25725 1152 Bool_t changedet =kFALSE;
88e3c173 1153 if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
a5d0fae6 1154 Int_t idetc=cl->GetDetectorIndex();
afd25725 1155
a5d0fae6 1156 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1c97ce2f 1157 // take into account misalignment (bring track to real detector plane)
1158 Double_t xTrOrig = currenttrack->GetX();
9be1d1c7 1159 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
afd25725 1160 // a first cut on track-cluster distance
1161 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1162 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1c97ce2f 1163 { // cluster not associated to track
4187a601 1164 AliDebug(2,"not associated");
421c4ba7 1165 // MvL: added here as well
1166 // bring track back to ideal detector plane
1167 currenttrack->Propagate(xTrOrig);
1c97ce2f 1168 continue;
1169 }
1170 // bring track back to ideal detector plane
9be1d1c7 1171 if (!currenttrack->Propagate(xTrOrig)) continue;
afd25725 1172 } else { // have to move track to cluster's detector
a5d0fae6 1173 const AliITSdetector &detc=layer.GetDetector(idetc);
afd25725 1174 // a first cut on track-cluster distance
a5d0fae6 1175 Double_t y;
1c97ce2f 1176 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
afd25725 1177 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1178 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
44347160 1179 continue; // cluster not associated to track
e43c066c 1180 //
15dd636f 1181 new (&backuptrack) AliITStrackMI(currenttrack2);
afd25725 1182 changedet = kTRUE;
e43c066c 1183 currenttrack =&currenttrack2;
a5d0fae6 1184 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
15dd636f 1185 new (currenttrack) AliITStrackMI(backuptrack);
afd25725 1186 changedet = kFALSE;
e43c066c 1187 continue;
1188 }
a5d0fae6 1189 currenttrack->SetDetectorIndex(idetc);
e50912db 1190 // Get again the budget to the primary vertex
1191 // for the current track being prolonged, if had to change detector
1192 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
e43c066c 1193 }
1194
afd25725 1195 // calculate track-clusters chi2
1196 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1197 // chi2 cut
4187a601 1198 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
afd25725 1199 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
88e3c173 1200 if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
e43c066c 1201 if (ntracks[ilayer]>=100) continue;
15dd636f 1202 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
9fd412a8 1203 updatetrack->SetClIndex(ilayer,-1);
afd25725 1204 if (changedet) new (&currenttrack2) AliITStrackMI(backuptrack);
ae00569a 1205
88e3c173 1206 if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
1c97ce2f 1207 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
4187a601 1208 AliDebug(2,"update failed");
1c97ce2f 1209 continue;
1210 }
09cf9d66 1211 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
ae00569a 1212 modstatus = 1; // found
6518a6c5 1213 } else { // virtual cluster in dead zone
b9671574 1214 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
f8720bda 1215 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
ae00569a 1216 modstatus = 7; // holes in z in SPD
1217 }
1218
1219 if (changedet) {
1220 Float_t xlocnewdet,zlocnewdet;
d1181f10 1221 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1222 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1223 }
ae00569a 1224 } else {
1225 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
e43c066c 1226 }
afd25725 1227 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1228
1229 // apply correction for material of the current layer
e50912db 1230 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1231
afd25725 1232 if (constrain) { // apply vertex constrain
b9671574 1233 updatetrack->SetConstrain(constrain);
e43c066c 1234 Bool_t isPrim = kTRUE;
afd25725 1235 if (ilayer<4) { // check that it's close to the vertex
b9671574 1236 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
afd25725 1237 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1238 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1239 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1240 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
e43c066c 1241 }
333d86cb 1242 if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
e43c066c 1243 } //apply vertex constrain
1244 ntracks[ilayer]++;
afd25725 1245 } // create new hypothesis
4187a601 1246 else {
1247 AliDebug(2,"chi2 too large");
1248 }
1249
2755f080 1250 } // loop over possible prolongations
1251
1252 // allow one prolongation without clusters
88e3c173 1253 if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
15dd636f 1254 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
2755f080 1255 // apply correction for material of the current layer
1256 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
9fd412a8 1257 vtrack->SetClIndex(ilayer,-1);
ae00569a 1258 modstatus = 3; // skipped
1259 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
333d86cb 1260 if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
b9671574 1261 vtrack->IncrementNSkipped();
e43c066c 1262 ntracks[ilayer]++;
1263 }
1264
6262dd3d 1265
e50912db 1266 } // loop over tracks in layer ilayer+1
afd25725 1267
1268 //loop over track candidates for the current layer
e43c066c 1269 //
1270 //
1271 Int_t accepted=0;
1272
afd25725 1273 Int_t golden=0;
e43c066c 1274 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1275 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
afd25725 1276 if (normalizedchi2[itrack] <
1277 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
44347160 1278 if (ilayer>4) {
1279 accepted++;
1280 } else {
1281 if (constrain) { // constrain
afd25725 1282 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1283 accepted++;
44347160 1284 } else { // !constrain
afd25725 1285 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1286 accepted++;
44347160 1287 }
e43c066c 1288 }
1289 }
afd25725 1290 // sort tracks by increasing normalized chi2
1291 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
e43c066c 1292 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
afd25725 1293 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
e43c066c 1294 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
afd25725 1295 } // end loop over layers
1296
afd25725 1297
1298 //
1299 // Now select tracks to be kept
1300 //
44347160 1301 Int_t max = constrain ? 20 : 5;
e43c066c 1302
afd25725 1303 // tracks that reach layer 0 (SPD inner)
44347160 1304 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
15dd636f 1305 AliITStrackMI & track= tracks[0][nindexes[0][i]];
628e7bb0 1306 if (track.GetNumberOfClusters()<2) continue;
afd25725 1307 if (!constrain && track.GetNormChi2(0) >
6518a6c5 1308 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1309 continue;
1310 }
15dd636f 1311 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1312 }
afd25725 1313
1314 // tracks that reach layer 1 (SPD outer)
628e7bb0 1315 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
15dd636f 1316 AliITStrackMI & track= tracks[1][nindexes[1][i]];
e43c066c 1317 if (track.GetNumberOfClusters()<4) continue;
afd25725 1318 if (!constrain && track.GetNormChi2(1) >
1319 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1320 if (constrain) track.IncrementNSkipped();
81e97e0d 1321 if (!constrain) {
b9671574 1322 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1323 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
b9671574 1324 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1325 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1326 }
1327 }
15dd636f 1328 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1329 }
afd25725 1330
6518a6c5 1331 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
81e97e0d 1332 if (!constrain){
628e7bb0 1333 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
15dd636f 1334 AliITStrackMI & track= tracks[2][nindexes[2][i]];
628e7bb0 1335 if (track.GetNumberOfClusters()<3) continue;
afd25725 1336 if (!constrain && track.GetNormChi2(2) >
1337 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
b9671574 1338 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
81e97e0d 1339 if (!constrain){
b9671574 1340 track.SetD(0,track.GetD(GetX(),GetY()));
afd25725 1341 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
b9671574 1342 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1343 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
e43c066c 1344 }
1345 }
15dd636f 1346 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
e43c066c 1347 }
1348 }
81e97e0d 1349
afd25725 1350 if (!constrain) {
81e97e0d 1351 //
afd25725 1352 // register best track of each layer - important for V0 finder
81e97e0d 1353 //
1354 for (Int_t ilayer=0;ilayer<5;ilayer++){
1355 if (ntracks[ilayer]==0) continue;
1356 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1357 if (track.GetNumberOfClusters()<1) continue;
1358 CookLabel(&track,0);
1359 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1360 }
1361 }
1362 //
1363 // update TPC V0 information
1364 //
b9671574 1365 if (otrack->GetESDtrack()->GetV0Index(0)>0){
81e97e0d 1366 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1367 for (Int_t i=0;i<3;i++){
b9671574 1368 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
81e97e0d 1369 if (index==0) break;
44347160 1370 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
81e97e0d 1371 if (vertex->GetStatus()<0) continue; // rejected V0
1372 //
6c94f330 1373 if (otrack->GetSign()>0) {
81e97e0d 1374 vertex->SetIndex(0,esdindex);
1375 }
1376 else{
1377 vertex->SetIndex(1,esdindex);
1378 }
1379 //find nearest layer with track info
b75d63a7 1380 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1381 Int_t nearestold = GetNearestLayer(xrp); //I.B.
81e97e0d 1382 Int_t nearest = nearestold;
1383 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1384 if (ntracks[nearest]==0){
1385 nearest = ilayer;
1386 }
1387 }
1388 //
1389 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1390 if (nearestold<5&&nearest<5){
b9671574 1391 Bool_t accept = track.GetNormChi2(nearest)<10;
81e97e0d 1392 if (accept){
6c94f330 1393 if (track.GetSign()>0) {
b75d63a7 1394 vertex->SetParamP(track);
81e97e0d 1395 vertex->Update(fprimvertex);
44347160 1396 //vertex->SetIndex(0,track.fESDtrack->GetID());
81e97e0d 1397 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1398 }else{
b75d63a7 1399 vertex->SetParamN(track);
81e97e0d 1400 vertex->Update(fprimvertex);
1401 //vertex->SetIndex(1,track.fESDtrack->GetID());
1402 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1403 }
1404 vertex->SetStatus(vertex->GetStatus()+1);
1405 }else{
44347160 1406 //vertex->SetStatus(-2); // reject V0 - not enough clusters
81e97e0d 1407 }
1408 }
81e97e0d 1409 }
afd25725 1410 }
1411
e43c066c 1412}
44347160 1413//------------------------------------------------------------------------
e43c066c 1414AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1415{
1416 //--------------------------------------------------------------------
1417 //
1418 //
1419 return fgLayers[layer];
1420}
44347160 1421//------------------------------------------------------------------------
8221b41b 1422AliITStrackerMI::AliITSlayer::AliITSlayer():
1423fR(0),
1424fPhiOffset(0),
1425fNladders(0),
1426fZOffset(0),
1427fNdetectors(0),
1428fDetectors(0),
1429fN(0),
1430fDy5(0),
1431fDy10(0),
1432fDy20(0),
1433fClustersCs(0),
1434fClusterIndexCs(0),
1435fYcs(0),
1436fZcs(0),
1437fNcs(0),
1438fCurrentSlice(-1),
d9ead1a0 1439fZmin(0),
8221b41b 1440fZmax(0),
1441fYmin(0),
1442fYmax(0),
1443fI(0),
1444fImax(0),
1445fSkip(0),
1446fAccepted(0),
d9ead1a0 1447fRoad(0),
1448fMaxSigmaClY(0),
1449fMaxSigmaClZ(0),
1450fNMaxSigmaCl(3)
1451{
e43c066c 1452 //--------------------------------------------------------------------
1453 //default AliITSlayer constructor
1454 //--------------------------------------------------------------------
e50912db 1455 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1456 fClusterWeight[i]=0;
1457 fClusterTracks[0][i]=-1;
1458 fClusterTracks[1][i]=-1;
1459 fClusterTracks[2][i]=-1;
1460 fClusterTracks[3][i]=-1;
1461 }
1462}
44347160 1463//------------------------------------------------------------------------
e43c066c 1464AliITStrackerMI::AliITSlayer::
8221b41b 1465AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1466fR(r),
1467fPhiOffset(p),
1468fNladders(nl),
1469fZOffset(z),
1470fNdetectors(nd),
1471fDetectors(0),
1472fN(0),
1473fDy5(0),
1474fDy10(0),
1475fDy20(0),
1476fClustersCs(0),
1477fClusterIndexCs(0),
1478fYcs(0),
1479fZcs(0),
1480fNcs(0),
1481fCurrentSlice(-1),
d9ead1a0 1482fZmin(0),
8221b41b 1483fZmax(0),
1484fYmin(0),
1485fYmax(0),
1486fI(0),
1487fImax(0),
1488fSkip(0),
1489fAccepted(0),
d9ead1a0 1490fRoad(0),
1491fMaxSigmaClY(0),
1492fMaxSigmaClZ(0),
1493fNMaxSigmaCl(3) {
e43c066c 1494 //--------------------------------------------------------------------
1495 //main AliITSlayer constructor
1496 //--------------------------------------------------------------------
e43c066c 1497 fDetectors=new AliITSdetector[fNladders*fNdetectors];
afd25725 1498 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
e43c066c 1499}
44347160 1500//------------------------------------------------------------------------
8221b41b 1501AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1502fR(layer.fR),
1503fPhiOffset(layer.fPhiOffset),
1504fNladders(layer.fNladders),
1505fZOffset(layer.fZOffset),
1506fNdetectors(layer.fNdetectors),
1507fDetectors(layer.fDetectors),
1508fN(layer.fN),
1509fDy5(layer.fDy5),
1510fDy10(layer.fDy10),
1511fDy20(layer.fDy20),
1512fClustersCs(layer.fClustersCs),
1513fClusterIndexCs(layer.fClusterIndexCs),
1514fYcs(layer.fYcs),
1515fZcs(layer.fZcs),
1516fNcs(layer.fNcs),
1517fCurrentSlice(layer.fCurrentSlice),
d9ead1a0 1518fZmin(layer.fZmin),
8221b41b 1519fZmax(layer.fZmax),
1520fYmin(layer.fYmin),
1521fYmax(layer.fYmax),
1522fI(layer.fI),
1523fImax(layer.fImax),
1524fSkip(layer.fSkip),
1525fAccepted(layer.fAccepted),
d9ead1a0 1526fRoad(layer.fRoad),
1527fMaxSigmaClY(layer.fMaxSigmaClY),
1528fMaxSigmaClZ(layer.fMaxSigmaClZ),
1529fNMaxSigmaCl(layer.fNMaxSigmaCl)
1530{
8221b41b 1531 //Copy constructor
1532}
44347160 1533//------------------------------------------------------------------------
e43c066c 1534AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1535 //--------------------------------------------------------------------
1536 // AliITSlayer destructor
1537 //--------------------------------------------------------------------
23197852 1538 delete [] fDetectors;
e43c066c 1539 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1540 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1541 fClusterWeight[i]=0;
1542 fClusterTracks[0][i]=-1;
1543 fClusterTracks[1][i]=-1;
1544 fClusterTracks[2][i]=-1;
1545 fClusterTracks[3][i]=-1;
1546 }
1547}
44347160 1548//------------------------------------------------------------------------
e43c066c 1549void AliITStrackerMI::AliITSlayer::ResetClusters() {
1550 //--------------------------------------------------------------------
1551 // This function removes loaded clusters
1552 //--------------------------------------------------------------------
1553 for (Int_t i=0; i<fN; i++) delete fClusters[i];
e50912db 1554 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
e43c066c 1555 fClusterWeight[i]=0;
1556 fClusterTracks[0][i]=-1;
1557 fClusterTracks[1][i]=-1;
1558 fClusterTracks[2][i]=-1;
1559 fClusterTracks[3][i]=-1;
1560 }
1561
1562 fN=0;
1563 fI=0;
1564}
44347160 1565//------------------------------------------------------------------------
e43c066c 1566void AliITStrackerMI::AliITSlayer::ResetWeights() {
1567 //--------------------------------------------------------------------
1568 // This function reset weights of the clusters
1569 //--------------------------------------------------------------------
e50912db 1570 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
e43c066c 1571 fClusterWeight[i]=0;
1572 fClusterTracks[0][i]=-1;
1573 fClusterTracks[1][i]=-1;
1574 fClusterTracks[2][i]=-1;
1575 fClusterTracks[3][i]=-1;
1576 }
1577 for (Int_t i=0; i<fN;i++) {
00a7cc50 1578 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
e43c066c 1579 if (cl&&cl->IsUsed()) cl->Use();
1580 }
1581
1582}
44347160 1583//------------------------------------------------------------------------
e43c066c 1584void AliITStrackerMI::AliITSlayer::ResetRoad() {
1585 //--------------------------------------------------------------------
1586 // This function calculates the road defined by the cluster density
1587 //--------------------------------------------------------------------
1588 Int_t n=0;
1589 for (Int_t i=0; i<fN; i++) {
1590 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1591 }
afd25725 1592 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
e43c066c 1593}
44347160 1594//------------------------------------------------------------------------
afd25725 1595Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
e43c066c 1596 //--------------------------------------------------------------------
1597 //This function adds a cluster to this layer
1598 //--------------------------------------------------------------------
e50912db 1599 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
e43c066c 1600 return 1;
1601 }
1602 fCurrentSlice=-1;
afd25725 1603 fClusters[fN]=cl;
1d4090b7 1604 fN++;
afd25725 1605 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
d9ead1a0 1606 //AD
1607 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1608 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1609 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1610 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1611 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1612 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1613 //AD
1614 /*
afd25725 1615 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1616 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1617 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1618 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
d9ead1a0 1619 */
e43c066c 1620 return 0;
1621}
44347160 1622//------------------------------------------------------------------------
e43c066c 1623void AliITStrackerMI::AliITSlayer::SortClusters()
1624{
1625 //
1626 //sort clusters
1627 //
00a7cc50 1628 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1d4090b7 1629 Float_t *z = new Float_t[fN];
1630 Int_t * index = new Int_t[fN];
1631 //
d9ead1a0 1632 fMaxSigmaClY=0.; //AD
1633 fMaxSigmaClZ=0.; //AD
1634
1d4090b7 1635 for (Int_t i=0;i<fN;i++){
1636 z[i] = fClusters[i]->GetZ();
d9ead1a0 1637 // save largest errors in y and z for this layer
1638 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1639 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1d4090b7 1640 }
1641 TMath::Sort(fN,z,index,kFALSE);
1642 for (Int_t i=0;i<fN;i++){
1643 clusters[i] = fClusters[index[i]];
1644 }
1645 //
1646 for (Int_t i=0;i<fN;i++){
1647 fClusters[i] = clusters[i];
1648 fZ[i] = fClusters[i]->GetZ();
1649 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1650 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1651 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1652 fY[i] = y;
1653 }
1654 delete[] index;
1655 delete[] z;
1656 delete[] clusters;
1657 //
1658
e43c066c 1659 fYB[0]=10000000;
1660 fYB[1]=-10000000;
1661 for (Int_t i=0;i<fN;i++){
1662 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1663 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1664 fClusterIndex[i] = i;
1665 }
1666 //
1667 // fill slices
1668 fDy5 = (fYB[1]-fYB[0])/5.;
1669 fDy10 = (fYB[1]-fYB[0])/10.;
1670 fDy20 = (fYB[1]-fYB[0])/20.;
1671 for (Int_t i=0;i<6;i++) fN5[i] =0;
1672 for (Int_t i=0;i<11;i++) fN10[i]=0;
1673 for (Int_t i=0;i<21;i++) fN20[i]=0;
1674 //
1675 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;}
1676 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;}
1677 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;}
1678 //
1679 //
1d4090b7 1680 for (Int_t i=0;i<fN;i++)
1681 for (Int_t irot=-1;irot<=1;irot++){
1682 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1683 // slice 5
1684 for (Int_t slice=0; slice<6;slice++){
e50912db 1685 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1d4090b7 1686 fClusters5[slice][fN5[slice]] = fClusters[i];
1687 fY5[slice][fN5[slice]] = curY;
1688 fZ5[slice][fN5[slice]] = fZ[i];
1689 fClusterIndex5[slice][fN5[slice]]=i;
1690 fN5[slice]++;
1691 }
e43c066c 1692 }
1d4090b7 1693 // slice 10
1694 for (Int_t slice=0; slice<11;slice++){
e50912db 1695 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1d4090b7 1696 fClusters10[slice][fN10[slice]] = fClusters[i];
1697 fY10[slice][fN10[slice]] = curY;
1698 fZ10[slice][fN10[slice]] = fZ[i];
1699 fClusterIndex10[slice][fN10[slice]]=i;
1700 fN10[slice]++;
1701 }
e43c066c 1702 }
1d4090b7 1703 // slice 20
1704 for (Int_t slice=0; slice<21;slice++){
e50912db 1705 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1d4090b7 1706 fClusters20[slice][fN20[slice]] = fClusters[i];
1707 fY20[slice][fN20[slice]] = curY;
1708 fZ20[slice][fN20[slice]] = fZ[i];
1709 fClusterIndex20[slice][fN20[slice]]=i;
1710 fN20[slice]++;
1711 }
1712 }
e43c066c 1713 }
1d4090b7 1714
1715 //
1716 // consistency check
1717 //
1718 for (Int_t i=0;i<fN-1;i++){
1719 if (fZ[i]>fZ[i+1]){
ae00569a 1720 printf("Bug\n");
e43c066c 1721 }
1722 }
1d4090b7 1723 //
1724 for (Int_t slice=0;slice<21;slice++)
1725 for (Int_t i=0;i<fN20[slice]-1;i++){
1726 if (fZ20[slice][i]>fZ20[slice][i+1]){
ae00569a 1727 printf("Bug\n");
1d4090b7 1728 }
1729 }
1730
1731
e43c066c 1732}
44347160 1733//------------------------------------------------------------------------
e43c066c 1734Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1735 //--------------------------------------------------------------------
1736 // This function returns the index of the nearest cluster
1737 //--------------------------------------------------------------------
1738 Int_t ncl=0;
1739 const Float_t *zcl;
1740 if (fCurrentSlice<0) {
1741 ncl = fN;
1742 zcl = fZ;
1743 }
1744 else{
1745 ncl = fNcs;
1746 zcl = fZcs;;
1747 }
1748
1749 if (ncl==0) return 0;
1750 Int_t b=0, e=ncl-1, m=(b+e)/2;
1751 for (; b<e; m=(b+e)/2) {
1752 // if (z > fClusters[m]->GetZ()) b=m+1;
1753 if (z > zcl[m]) b=m+1;
1754 else e=m;
1755 }
1756 return m;
1757}
44347160 1758//------------------------------------------------------------------------
1c97ce2f 1759Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1760 //--------------------------------------------------------------------
1761 // This function computes the rectangular road for this track
1762 //--------------------------------------------------------------------
1763
1764
1765 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1766 // take into account the misalignment: propagate track to misaligned detector plane
1767 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1768
1769 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1770 TMath::Sqrt(track->GetSigmaZ2() +
1771 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1772 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1773 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1774 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1775 TMath::Sqrt(track->GetSigmaY2() +
1776 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1777 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1778 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1779
1780 // track at boundary between detectors, enlarge road
1781 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1782 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1783 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1784 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1785 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1786 Float_t tgl = TMath::Abs(track->GetTgl());
1787 if (tgl > 1.) tgl=1.;
1788 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1789 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1790 Float_t snp = TMath::Abs(track->GetSnp());
1791 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1792 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1793 } // boundary
1794
1795 // add to the road a term (up to 2-3 mm) to deal with misalignments
1796 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1797 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1798
1799 Double_t r = fgLayers[ilayer].GetR();
1800 zmin = track->GetZ() - dz;
1801 zmax = track->GetZ() + dz;
1802 ymin = track->GetY() + r*det.GetPhi() - dy;
1803 ymax = track->GetY() + r*det.GetPhi() + dy;
1804
1805 // bring track back to idead detector plane
1806 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1807
1808 return kTRUE;
1809}
1810//------------------------------------------------------------------------
e43c066c 1811void AliITStrackerMI::AliITSlayer::
1812SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1813 //--------------------------------------------------------------------
1814 // This function sets the "window"
1815 //--------------------------------------------------------------------
1816
628e7bb0 1817 Double_t circle=2*TMath::Pi()*fR;
d9ead1a0 1818 fYmin = ymin;
1819 fYmax = ymax;
1820 fZmin = zmin;
1821 fZmax = zmax;
1822 // AD
1823 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1824 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1825 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1826 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1827 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1828
e43c066c 1829 Float_t ymiddle = (fYmin+fYmax)*0.5;
ae00569a 1830 if (ymiddle<fYB[0]) {
1831 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1832 } else if (ymiddle>fYB[1]) {
1833 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
e43c066c 1834 }
ae00569a 1835
e43c066c 1836 //
1837 fCurrentSlice =-1;
1838 // defualt take all
1839 fClustersCs = fClusters;
1840 fClusterIndexCs = fClusterIndex;
1841 fYcs = fY;
1842 fZcs = fZ;
1843 fNcs = fN;
628e7bb0 1844 //
e43c066c 1845 //is in 20 slice?
1846 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1847 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1848 if (slice<0) slice=0;
1849 if (slice>20) slice=20;
1850 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1851 if (isOK) {
1852 fCurrentSlice=slice;
1853 fClustersCs = fClusters20[fCurrentSlice];
1854 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1855 fYcs = fY20[fCurrentSlice];
1856 fZcs = fZ20[fCurrentSlice];
1857 fNcs = fN20[fCurrentSlice];
1858 }
1859 }
1860 //
1861 //is in 10 slice?
1862 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1863 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1864 if (slice<0) slice=0;
1865 if (slice>10) slice=10;
1866 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1867 if (isOK) {
1868 fCurrentSlice=slice;
1869 fClustersCs = fClusters10[fCurrentSlice];
1870 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1871 fYcs = fY10[fCurrentSlice];
1872 fZcs = fZ10[fCurrentSlice];
1873 fNcs = fN10[fCurrentSlice];
1874 }
1875 }
1876 //
1877 //is in 5 slice?
1878 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1879 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1880 if (slice<0) slice=0;
1881 if (slice>5) slice=5;
1882 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
ae00569a 1883 if (isOK) {
e43c066c 1884 fCurrentSlice=slice;
1885 fClustersCs = fClusters5[fCurrentSlice];
1886 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1887 fYcs = fY5[fCurrentSlice];
1888 fZcs = fZ5[fCurrentSlice];
1889 fNcs = fN5[fCurrentSlice];
1890 }
1891 }
628e7bb0 1892 //
d9ead1a0 1893 fI = FindClusterIndex(fZmin);
1894 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1895 fSkip = 0;
1896 fAccepted = 0;
6518a6c5 1897
1898 return;
e43c066c 1899}
44347160 1900//------------------------------------------------------------------------
628e7bb0 1901Int_t AliITStrackerMI::AliITSlayer::
1902FindDetectorIndex(Double_t phi, Double_t z) const {
1903 //--------------------------------------------------------------------
1904 //This function finds the detector crossed by the track
1905 //--------------------------------------------------------------------
31fb8575 1906 Double_t dphi;
1907 if (fZOffset<0) // old geometry
1908 dphi = -(phi-fPhiOffset);
1909 else // new geometry
1910 dphi = phi-fPhiOffset;
1911
6518a6c5 1912
628e7bb0 1913 if (dphi < 0) dphi += 2*TMath::Pi();
1914 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1915 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1916 if (np>=fNladders) np-=fNladders;
1917 if (np<0) np+=fNladders;
1918
6518a6c5 1919
628e7bb0 1920 Double_t dz=fZOffset-z;
6518a6c5 1921 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1922 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
bf1cd124 1923 if (nz>=fNdetectors || nz<0) {
1924 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1925 return -1;
1926 }
628e7bb0 1927
23197852 1928 // ad hoc correction for 3rd ladder of SDD inner layer,
1929 // which is reversed (rotated by pi around local y)
1930 // this correction is OK only from AliITSv11Hybrid onwards
1931 if (GetR()>12. && GetR()<20.) { // SDD inner
1932 if(np==2) { // 3rd ladder
6801b453 1933 Double_t posMod252[3];
1934 AliITSgeomTGeo::GetTranslation(252,posMod252);
1935 // check the Z coordinate of Mod 252: if negative
1936 // (old SDD geometry in AliITSv11Hybrid)
1937 // the swap of numeration whould be applied
1938 if(posMod252[2]<0.){
1939 nz = (fNdetectors-1) - nz;
1940 }
1941 }
23197852 1942 }
1943 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1944
1945
628e7bb0 1946 return np*fNdetectors + nz;
1947}
44347160 1948//------------------------------------------------------------------------
ae00569a 1949const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1950{
e43c066c 1951 //--------------------------------------------------------------------
1952 // This function returns clusters within the "window"
1953 //--------------------------------------------------------------------
1954
ae00569a 1955 if (fCurrentSlice<0) {
e43c066c 1956 Double_t rpi2 = 2.*fR*TMath::Pi();
1957 for (Int_t i=fI; i<fImax; i++) {
1958 Double_t y = fY[i];
d9ead1a0 1959 Double_t z = fZ[i];
e43c066c 1960 if (fYmax<y) y -= rpi2;
1d4090b7 1961 if (fYmin>y) y += rpi2;
e43c066c 1962 if (y<fYmin) continue;
1963 if (y>fYmax) continue;
d9ead1a0 1964 // AD
1965 // skip clusters that are in "extended" road but they
1966 // 3sigma error does not touch the original road
1967 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1968 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1969 //
88e3c173 1970 if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1971 ci=i;
ae00569a 1972 if (!test) fI=i+1;
e43c066c 1973 return fClusters[i];
1974 }
ae00569a 1975 } else {
e43c066c 1976 for (Int_t i=fI; i<fImax; i++) {
1977 if (fYcs[i]<fYmin) continue;
1978 if (fYcs[i]>fYmax) continue;
88e3c173 1979 if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
e43c066c 1980 ci=fClusterIndexCs[i];
ae00569a 1981 if (!test) fI=i+1;
e43c066c 1982 return fClustersCs[i];
1983 }
1984 }
1985 return 0;
1986}
44347160 1987//------------------------------------------------------------------------
e43c066c 1988Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1989const {
1990 //--------------------------------------------------------------------
afd25725 1991 // This function returns the layer thickness at this point (units X0)
e43c066c 1992 //--------------------------------------------------------------------
1993 Double_t d=0.0085;
e50912db 1994 x0=AliITSRecoParam::GetX0Air();
e43c066c 1995 if (43<fR&&fR<45) { //SSD2
1996 Double_t dd=0.0034;
1997 d=dd;
1998 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1999 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2000 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2001 for (Int_t i=0; i<12; i++) {
2002 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
2003 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2004 d+=0.0034;
2005 break;
2006 }
2007 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
2008 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2009 d+=0.0034;
2010 break;
2011 }
2012 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2013 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2014 }
2015 } else
2016 if (37<fR&&fR<41) { //SSD1
2017 Double_t dd=0.0034;
2018 d=dd;
2019 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2020 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2021 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2022 for (Int_t i=0; i<11; i++) {
2023 if (TMath::Abs(z-3.9*i)<0.15) {
2024 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2025 d+=dd;
2026 break;
2027 }
2028 if (TMath::Abs(z+3.9*i)<0.15) {
2029 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2030 d+=dd;
2031 break;
2032 }
2033 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2034 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2035 }
2036 } else
2037 if (13<fR&&fR<26) { //SDD
2038 Double_t dd=0.0033;
2039 d=dd;
2040 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2041
2042 if (TMath::Abs(y-1.80)<0.55) {
2043 d+=0.016;
2044 for (Int_t j=0; j<20; j++) {
2045 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2046 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2047 }
2048 }
2049 if (TMath::Abs(y+1.80)<0.55) {
2050 d+=0.016;
2051 for (Int_t j=0; j<20; j++) {
2052 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2053 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2054 }
2055 }
2056
2057 for (Int_t i=0; i<4; i++) {
2058 if (TMath::Abs(z-7.3*i)<0.60) {
2059 d+=dd;
2060 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2061 break;
2062 }
2063 if (TMath::Abs(z+7.3*i)<0.60) {
2064 d+=dd;
2065 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2066 break;
2067 }
2068 }
2069 } else
2070 if (6<fR&&fR<8) { //SPD2
2071 Double_t dd=0.0063; x0=21.5;
2072 d=dd;
2073 if (TMath::Abs(y-3.08)>0.5) d+=dd;
afd25725 2074 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
e43c066c 2075 } else
2076 if (3<fR&&fR<5) { //SPD1
2077 Double_t dd=0.0063; x0=21.5;
2078 d=dd;
2079 if (TMath::Abs(y+0.21)>0.6) d+=dd;
afd25725 2080 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
e43c066c 2081 }
2082
2083 return d;
2084}
44347160 2085//------------------------------------------------------------------------
23197852 2086AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2087fR(det.fR),
1c97ce2f 2088fRmisal(det.fRmisal),
23197852 2089fPhi(det.fPhi),
2090fSinPhi(det.fSinPhi),
2091fCosPhi(det.fCosPhi),
2092fYmin(det.fYmin),
2093fYmax(det.fYmax),
2094fZmin(det.fZmin),
2095fZmax(det.fZmax),
2096fIsBad(det.fIsBad),
2097fNChips(det.fNChips),
2098fChipIsBad(det.fChipIsBad)
2099{
2100 //Copy constructor
2101}
2102//------------------------------------------------------------------------
2103void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
a70ed6ad 2104 const AliITSDetTypeRec *detTypeRec)
23197852 2105{
2106 //--------------------------------------------------------------------
2107 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2108 //--------------------------------------------------------------------
2109
2110 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2111 // while in the tracker they start from 0 for each layer
2112 for(Int_t il=0; il<ilayer; il++)
2113 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2114
2115 Int_t detType;
2116 if (ilayer==0 || ilayer==1) { // ---------- SPD
2117 detType = 0;
2118 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2119 detType = 1;
2120 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2121 detType = 2;
2122 } else {
2123 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2124 return;
2125 }
2126
2127 // Get calibration from AliITSDetTypeRec
2128 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
d1181f10 2129 calib->SetModuleIndex(idet);
23197852 2130 AliITSCalibration *calibSPDdead = 0;
2131 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2132 if (calib->IsBad() ||
2133 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2134 {
2135 SetBad();
359ac74d 2136 // printf("lay %d bad %d\n",ilayer,idet);
23197852 2137 }
2138
2139 // Get segmentation from AliITSDetTypeRec
2140 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2141
2142 // Read info about bad chips
2143 fNChips = segm->GetMaximumChipIndex()+1;
2144 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2145 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2146 fChipIsBad = new Bool_t[fNChips];
2147 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2148 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2149 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
4187a601 2150 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
23197852 2151 }
2152
2153 return;
2154}
2155//------------------------------------------------------------------------
e50912db 2156Double_t AliITStrackerMI::GetEffectiveThickness()
e43c066c 2157{
2158 //--------------------------------------------------------------------
afd25725 2159 // Returns the thickness between the current layer and the vertex (units X0)
e43c066c 2160 //--------------------------------------------------------------------
e43c066c 2161
e50912db 2162 if(fUseTGeo!=0) {
2163 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2164 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2165 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2166 }
2167
afd25725 2168 // beam pipe
e50912db 2169 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2170 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
afd25725 2171
2172 // layers
2173 Double_t x0=0;
e43c066c 2174 Double_t xn=fgLayers[fI].GetR();
2175 for (Int_t i=0; i<fI; i++) {
2176 Double_t xi=fgLayers[i].GetR();
e50912db 2177 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2178 d+=dLayer*xi*xi;
e43c066c 2179 }
2180
afd25725 2181 // shields
e43c066c 2182 if (fI>1) {
e50912db 2183 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2184 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
e43c066c 2185 }
e43c066c 2186 if (fI>3) {
e50912db 2187 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2188 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
e43c066c 2189 }
e43c066c 2190 return d/(xn*xn);
2191}
44347160 2192//------------------------------------------------------------------------
e43c066c 2193Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
ae00569a 2194 //-------------------------------------------------------------------
e43c066c 2195 // This function returns number of clusters within the "window"
2196 //--------------------------------------------------------------------
2197 Int_t ncl=0;
2198 for (Int_t i=fI; i<fN; i++) {
00a7cc50 2199 const AliITSRecPoint *c=fClusters[i];
e43c066c 2200 if (c->GetZ() > fZmax) break;
2201 if (c->IsUsed()) continue;
2202 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2203 Double_t y=fR*det.GetPhi() + c->GetY();
2204
2205 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2206 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2207
2208 if (y<fYmin) continue;
2209 if (y>fYmax) continue;
2210 ncl++;
2211 }
2212 return ncl;
2213}
44347160 2214//------------------------------------------------------------------------
ae00569a 2215Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2216 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2217{
e43c066c 2218 //--------------------------------------------------------------------
ae00569a 2219 // This function refits the track "track" at the position "x" using
2220 // the clusters from "clusters"
ef7253ac 2221 // If "extra"==kTRUE,
ae00569a 2222 // the clusters from overlapped modules get attached to "track"
7167ae53 2223 // If "planeff"==kTRUE,
2224 // special approach for plane efficiency evaluation is applyed
e43c066c 2225 //--------------------------------------------------------------------
6518a6c5 2226
e50912db 2227 Int_t index[AliITSgeomTGeo::kNLayers];
e43c066c 2228 Int_t k;
e50912db 2229 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
ae00569a 2230 Int_t nc=clusters->GetNumberOfClusters();
e43c066c 2231 for (k=0; k<nc; k++) {
ae00569a 2232 Int_t idx=clusters->GetClusterIndex(k);
2233 Int_t ilayer=(idx&0xf0000000)>>28;
2234 index[ilayer]=idx;
e43c066c 2235 }
67c1e979 2236
7167ae53 2237 return RefitAt(xx,track,index,extra,planeeff); // call the method below
67c1e979 2238}
44347160 2239//------------------------------------------------------------------------
ae00569a 2240Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
7167ae53 2241 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
ae00569a 2242{
67c1e979 2243 //--------------------------------------------------------------------
ae00569a 2244 // This function refits the track "track" at the position "x" using
67c1e979 2245 // the clusters from array
ae00569a 2246 // If "extra"==kTRUE,
2247 // the clusters from overlapped modules get attached to "track"
7167ae53 2248 // If "planeff"==kTRUE,
2249 // special approach for plane efficiency evaluation is applyed
67c1e979 2250 //--------------------------------------------------------------------
e50912db 2251 Int_t index[AliITSgeomTGeo::kNLayers];
67c1e979 2252 Int_t k;
e50912db 2253 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
67c1e979 2254 //
e50912db 2255 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
ae00569a 2256 index[k]=clusters[k];
67c1e979 2257 }
2258
74008278 2259 // special for cosmics and TPC prolonged tracks:
269709f8 2260 // propagate to the innermost of:
2261 // - innermost layer crossed by the track
2262 // - innermost layer where a cluster was associated to the track
74008278 2263 static AliITSRecoParam *repa = NULL;
2264 if(!repa){
2265 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
2266 if(!repa){
2267 repa = AliITSRecoParam::GetHighFluxParam();
2268 AliWarning("Using default AliITSRecoParam class");
2269 }
2270 }
2271 Int_t evsp=repa->GetEventSpecie();
15f91fcd 2272 ULong_t trStatus=0;
2273 if(track->GetESDtrack()) trStatus=track->GetStatus();
74008278 2274 Int_t innermostlayer=0;
15f91fcd 2275 if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
74008278 2276 innermostlayer=5;
2277 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2278 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
269709f8 2279 if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
2280 index[innermostlayer] >= 0 ) break;
74008278 2281 }
269709f8 2282
74008278 2283 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
ae00569a 2284 }
afd25725 2285
ae00569a 2286 Int_t modstatus=1; // found
2287 Float_t xloc,zloc;
67c1e979 2288 Int_t from, to, step;
ae00569a 2289 if (xx > track->GetX()) {
e50912db 2290 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
67c1e979 2291 step=+1;
2292 } else {
e50912db 2293 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
67c1e979 2294 step=-1;
2295 }
ae00569a 2296 TString dir = (step>0 ? "outward" : "inward");
67c1e979 2297
ae00569a 2298 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
6518a6c5 2299 AliITSlayer &layer=fgLayers[ilayer];
67c1e979 2300 Double_t r=layer.GetR();
4fa7f7d1 2301
afd25725 2302 if (step<0 && xx>r) break;
2303
2304 // material between SSD and SDD, SDD and SPD
6518a6c5 2305 Double_t hI=ilayer-0.5*step;
e50912db 2306 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
ae00569a 2307 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
e50912db 2308 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
ae00569a 2309 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
67c1e979 2310
ae00569a 2311
afd25725 2312 Double_t oldGlobXYZ[3];
d1181f10 2313 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
afd25725 2314
67178f34 2315 // continue if we are already beyond this layer
2316 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2317 if(step>0 && oldGlobR > r) continue; // going outward
2318 if(step<0 && oldGlobR < r) continue; // going inward
2319
8602c008 2320 Double_t phi,z;
ae00569a 2321 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
67c1e979 2322
67c1e979 2323 Int_t idet=layer.FindDetectorIndex(phi,z);
6518a6c5 2324
2325 // check if we allow a prolongation without point for large-eta tracks
ae00569a 2326 Int_t skip = CheckSkipLayer(track,ilayer,idet);
6518a6c5 2327 if (skip==2) {
ae00569a 2328 modstatus = 4; // out in z
d1181f10 2329 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2330 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2331 }
7131593b 2332 // cross layer
2333 // apply correction for material of the current layer
2334 // add time if going outward
2335 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
6518a6c5 2336 continue;
2337 }
2338
e50912db 2339 if (idet<0) return kFALSE;
ae00569a 2340
4fa7f7d1 2341
67c1e979 2342 const AliITSdetector &det=layer.GetDetector(idet);
545af9ef 2343 // only for ITS-SA tracks refit
2344 if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
2345 //
1c97ce2f 2346 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
23197852 2347
ae00569a 2348 track->SetDetectorIndex(idet);
d1181f10 2349 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
67c1e979 2350
23197852 2351 Double_t dz,zmin,zmax,dy,ymin,ymax;
ae00569a 2352
2353 const AliITSRecPoint *clAcc=0;
44347160 2354 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
67c1e979 2355
6518a6c5 2356 Int_t idx=index[ilayer];
ae00569a 2357 if (idx>=0) { // cluster in this layer
2358 modstatus = 6; // no refit
2359 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2360 if (cl) {
2361 if (idet != cl->GetDetectorIndex()) {
2362 idet=cl->GetDetectorIndex();
a5d0fae6 2363 const AliITSdetector &detc=layer.GetDetector(idet);
2364 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
ae00569a 2365 track->SetDetectorIndex(idet);
d1181f10 2366 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
ae00569a 2367 }
ae00569a 2368 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2369 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2370 if (chi2<maxchi2) {
2371 clAcc=cl;
2372 maxchi2=chi2;
2373 modstatus = 1; // found
2374 } else {
7167ae53 2375 return kFALSE; //
ae00569a 2376 }
2377 }
2378 } else { // no cluster in this layer
2379 if (skip==1) {
2380 modstatus = 3; // skipped
0ed58a47 2381 // Plane Eff determination:
2382 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2383 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2384 UseTrackForPlaneEff(track,ilayer);
7167ae53 2385 }
ae00569a 2386 } else {
2387 modstatus = 5; // no cls in road
2388 // check dead
1c97ce2f 2389 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2390 dz = 0.5*(zmax-zmin);
2391 dy = 0.5*(ymax-ymin);
2392 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
ae00569a 2393 if (dead==1) modstatus = 7; // holes in z in SPD
f8720bda 2394 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
ae00569a 2395 }
e43c066c 2396 }
ae00569a 2397
2398 if (clAcc) {
2399 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
09cf9d66 2400 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
e43c066c 2401 }
ae00569a 2402 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2403
2404
ef3508c5 2405 if (extra && clAcc) { // search for extra clusters in overlapped modules
ae00569a 2406 AliITStrackV2 tmp(*track);
1c97ce2f 2407 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2408 layer.SelectClusters(zmin,zmax,ymin,ymax);
ae00569a 2409
2410 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2411 Int_t idetExtra=-1;
a5d0fae6 2412 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2413 Double_t tolerance=0.1;
ae00569a 2414 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2415 // only clusters in another module! (overlaps)
2416 idetExtra = clExtra->GetDetectorIndex();
2417 if (idet == idetExtra) continue;
2418
a5d0fae6 2419 const AliITSdetector &detx=layer.GetDetector(idetExtra);
ae00569a 2420
1c97ce2f 2421 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
ae00569a 2422 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2423 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
1c97ce2f 2424 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
ae00569a 2425
2426 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2427 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2428 }
2429 if (cci>=0) {
2430 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2431 track->SetExtraModule(ilayer,idetExtra);
2432 }
2433 } // end search for extra clusters in overlapped modules
1c97ce2f 2434
afd25725 2435 // Correct for material of the current layer
7131593b 2436 // cross material
2437 // add time if going outward
ae00569a 2438 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
545af9ef 2439 track->SetCheckInvariant(kTRUE);
ae00569a 2440 } // end loop on layers
2441
db355ee7 2442 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
e43c066c 2443
e43c066c 2444 return kTRUE;
2445}
44347160 2446//------------------------------------------------------------------------
15dd636f 2447Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
e43c066c 2448{
2449 //
2450 // calculate normalized chi2
2451 // return NormalizedChi2(track,0);
2452 Float_t chi2 = 0;
2453 Float_t sum=0;
2454 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2455 // track->fdEdxMismatch=0;
2456 Float_t dedxmismatch =0;
2457 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2458 if (mode<100){
2459 for (Int_t i = 0;i<6;i++){
9fd412a8 2460 if (track->GetClIndex(i)>=0){
e43c066c 2461 Float_t cerry, cerrz;
2462 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2463 else
b9671574 2464 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2465 cerry*=cerry;
2466 cerrz*=cerrz;
b9671574 2467 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
572f41f9 2468 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
b9671574 2469 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
e43c066c 2470 if (ratio<0.5) {
2471 cchi2+=(0.5-ratio)*10.;
2472 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2473 dedxmismatch+=(0.5-ratio)*10.;
2474 }
2475 }
2476 if (i<2 ||i>3){
b9671574 2477 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
e43c066c 2478 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2479 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2480 if (i<2) chi2+=2*cl->GetDeltaProbability();
2481 }
2482 chi2+=cchi2;
2483 sum++;
2484 }
2485 }
b9671574 2486 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2487 track->SetdEdxMismatch(dedxmismatch);
e43c066c 2488 }
2489 }
2490 else{
2491 for (Int_t i = 0;i<4;i++){
9fd412a8 2492 if (track->GetClIndex(i)>=0){
e43c066c 2493 Float_t cerry, cerrz;
2494 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2495 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2496 cerry*=cerry;
2497 cerrz*=cerrz;
b9671574 2498 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2499 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2500 sum++;
2501 }
2502 }
2503 for (Int_t i = 4;i<6;i++){
9fd412a8 2504 if (track->GetClIndex(i)>=0){
e43c066c 2505 Float_t cerry, cerrz;
2506 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
b9671574 2507 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
e43c066c 2508 cerry*=cerry;
2509 cerrz*=cerrz;
2510 Float_t cerryb, cerrzb;
2511 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
b9671574 2512 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
e43c066c 2513 cerryb*=cerryb;
2514 cerrzb*=cerrzb;
b9671574 2515 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2516 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
e43c066c 2517 sum++;
2518 }
2519 }
2520 }
b9671574 2521 if (track->GetESDtrack()->GetTPCsignal()>85){
2522 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
e43c066c 2523 if (ratio<0.5) {
2524 chi2+=(0.5-ratio)*5.;
2525 }
2526 if (ratio>2){
2527 chi2+=(ratio-2.0)*3;
2528 }
2529 }
2530 //
b9671574 2531 Double_t match = TMath::Sqrt(track->GetChi22());
2532 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2755f080 2533 if (!track->GetConstrain()) {
2534 if (track->GetNumberOfClusters()>2) {
2535 match/=track->GetNumberOfClusters()-2.;
2536 } else {
2537 match=0;
2538 }
2539 }
e43c066c 2540 if (match<0) match=0;
f8720bda 2541
2542 // penalty factor for missing points (NDeadZone>0), but no penalty
2543 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2544 // or there is a dead from OCDB)
2545 Float_t deadzonefactor = 0.;
2546 if (track->GetNDeadZone()>0.) {
bf1cd124 2547 Int_t sumDeadZoneProbability=0;
2548 for(Int_t ilay=0;ilay<6;ilay++) {
2549 if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
2550 }
2551 Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2552 if(nDeadZoneWithProbNot1>0) {
2553 Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
a5a317a9 2554 AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
bf1cd124 2555 deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
2556 Float_t one = 1.;
2557 deadZoneProbability = TMath::Min(deadZoneProbability,one);
f8720bda 2558 deadzonefactor = 3.*(1.1-deadZoneProbability);
2559 }
2560 }
2561
b9671574 2562 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2563 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2564 1./(1.+track->GetNSkipped()));
a5a317a9 2565 AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
bf1cd124 2566 AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
2567 return normchi2;
e43c066c 2568}
44347160 2569//------------------------------------------------------------------------
a70ed6ad 2570Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
e43c066c 2571{
2572 //
2573 // return matching chi2 between two tracks
d1181f10 2574 Double_t largeChi2=1000.;
2575
15dd636f 2576 AliITStrackMI track3(*track2);
d1181f10 2577 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
e43c066c 2578 TMatrixD vec(5,1);
6c94f330 2579 vec(0,0)=track1->GetY() - track3.GetY();
2580 vec(1,0)=track1->GetZ() - track3.GetZ();
2581 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2582 vec(3,0)=track1->GetTgl() - track3.GetTgl();
6c23ffed 2583 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
e43c066c 2584 //
2585 TMatrixD cov(5,5);
6c94f330 2586 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2587 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2588 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2589 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2590 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
e43c066c 2591
6c94f330 2592 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2593 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2594 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2595 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
e43c066c 2596 //
6c94f330 2597 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2598 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2599 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
e43c066c 2600 //
6c94f330 2601 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2602 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
e43c066c 2603 //
6c94f330 2604 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
e43c066c 2605
2606 cov.Invert();
2607 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2608 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2609 return chi2(0,0);
2610}
44347160 2611//------------------------------------------------------------------------
a70ed6ad 2612Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
e43c066c 2613{
2614 //
afd25725 2615 // return probability that given point (characterized by z position and error)
2616 // is in SPD dead zone
bf1cd124 2617 // This method assumes that fSPDdetzcentre is ordered from -z to +z
e43c066c 2618 //
afd25725 2619 Double_t probability = 0.;
bf1cd124 2620 Double_t nearestz = 0.,distz=0.;
2621 Int_t nearestzone = -1;
2622 Double_t mindistz = 1000.;
2623
2624 // find closest dead zone
2625 for (Int_t i=0; i<3; i++) {
2626 distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
2627 if (distz<mindistz) {
2628 nearestzone=i;
2629 nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
2630 mindistz=distz;
2631 }
2632 }
2633
2634 // too far from dead zone
2635 if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
2636
2637
afd25725 2638 Double_t zmin, zmax;
bf1cd124 2639 if (nearestzone==0) { // dead zone at z = -7
e50912db 2640 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2641 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2642 } else if (nearestzone==1) { // dead zone at z = 0
e50912db 2643 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2644 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
bf1cd124 2645 } else if (nearestzone==2) { // dead zone at z = +7
2646 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2647 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
afd25725 2648 } else {
2649 zmin = 0.;
2650 zmax = 0.;
e43c066c 2651 }
afd25725 2652 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2653 // dead zone)
bb7e41dd 2654 probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2655 AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
bf1cd124 2656 AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
e43c066c 2657 return probability;
2658}
44347160 2659//------------------------------------------------------------------------
a70ed6ad 2660Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
e43c066c 2661{
2662 //
2663 // calculate normalized chi2
2664 Float_t chi2[6];
2665 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2666 Float_t ncl = 0;
2667 for (Int_t i = 0;i<6;i++){
b9671574 2668 if (TMath::Abs(track->GetDy(i))>0){
2669 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2670 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
e43c066c 2671 ncl++;
2672 }
2673 else{chi2[i]=10000;}
2674 }
2675 Int_t index[6];
2676 TMath::Sort(6,chi2,index,kFALSE);
2677 Float_t max = float(ncl)*fac-1.;
2678 Float_t sumchi=0, sumweight=0;
2679 for (Int_t i=0;i<max+1;i++){
2680 Float_t weight = (i<max)?1.:(max+1.-i);
2681 sumchi+=weight*chi2[index[i]];
2682 sumweight+=weight;
2683 }
2684 Double_t normchi2 = sumchi/sumweight;
2685 return normchi2;
2686}
44347160 2687//------------------------------------------------------------------------
a70ed6ad 2688Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
e43c066c 2689{
2690 //
2691 // calculate normalized chi2
2692 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2693 Int_t npoints = 0;
2694 Double_t res =0;
2695 for (Int_t i=0;i<6;i++){
b9671574 2696 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2697 Double_t sy1 = forwardtrack->GetSigmaY(i);
2698 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2699 Double_t sy2 = backtrack->GetSigmaY(i);
2700 Double_t sz2 = backtrack->GetSigmaZ(i);
e43c066c 2701 if (i<2){ sy2=1000.;sz2=1000;}
2702 //
b9671574 2703 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2704 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
e43c066c 2705 //
2706 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2707 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2708 //
2709 res+= nz0*nz0+ny0*ny0;
2710 npoints++;
2711 }
2712 if (npoints>1) return
6c23ffed 2713 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
e43c066c 2714 //2*forwardtrack->fNUsed+
b9671574 2715 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2716 1./(1.+forwardtrack->GetNSkipped()));
e43c066c 2717 return 1000;
2718}
44347160 2719//------------------------------------------------------------------------
e43c066c 2720Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2721 //--------------------------------------------------------------------
2722 // Return pointer to a given cluster
2723 //--------------------------------------------------------------------
2724 Int_t l=(index & 0xf0000000) >> 28;
2725 Int_t c=(index & 0x0fffffff) >> 00;
2726 return fgLayers[l].GetWeight(c);
2727}
44347160 2728//------------------------------------------------------------------------
a70ed6ad 2729void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
e43c066c 2730{
2731 //---------------------------------------------
2732 // register track to the list
628e7bb0 2733 //
b9671574 2734 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
628e7bb0 2735 //
2736 //
e43c066c 2737 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2738 Int_t index = track->GetClusterIndex(icluster);
2739 Int_t l=(index & 0xf0000000) >> 28;
2740 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2741 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2742 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2743 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2744 fgLayers[l].SetClusterTracks(itrack,c,id);
e43c066c 2745 break;
2746 }
2747 }
2748 }
2749}
44347160 2750//------------------------------------------------------------------------
a70ed6ad 2751void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
e43c066c 2752{
2753 //---------------------------------------------
2754 // unregister track from the list
2755 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2756 Int_t index = track->GetClusterIndex(icluster);
2757 Int_t l=(index & 0xf0000000) >> 28;
2758 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2759 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2760 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2761 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2762 fgLayers[l].SetClusterTracks(itrack,c,-1);
e43c066c 2763 }
2764 }
2765 }
2766}
44347160 2767//------------------------------------------------------------------------
00a7cc50 2768Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
e43c066c 2769{
2770 //-------------------------------------------------------------
2771 //get number of shared clusters
2772 //-------------------------------------------------------------
2773 Float_t shared=0;
2774 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2775 // mean number of clusters
2776 Float_t *ny = GetNy(id), *nz = GetNz(id);
2777
2778
2779 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2780 Int_t index = track->GetClusterIndex(icluster);
2781 Int_t l=(index & 0xf0000000) >> 28;
2782 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2783 if (c>fgLayers[l].GetNumberOfClusters()) continue;
5668b5b2 2784 // if (ny[l]<1.e-13){
2785 // printf("problem\n");
2786 // }
00a7cc50 2787 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2788 Float_t weight=1;
2789 //
2790 Float_t deltan = 0;
2791 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2792 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2793 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2794 if (l<2 || l>3){
2795 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2796 }
2797 else{
2798 deltan = (cl->GetNz()-nz[l]);
2799 }
2800 if (deltan>2.0) continue; // extended - highly probable shared cluster
2801 weight = 2./TMath::Max(3.+deltan,2.);
2802 //
2803 for (Int_t itrack=0;itrack<4;itrack++){
b9671574 2804 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
e43c066c 2805 list[l]=index;
00a7cc50 2806 clist[l] = (AliITSRecPoint*)GetCluster(index);
e43c066c 2807 shared+=weight;
2808 break;
2809 }
2810 }
2811 }
b9671574 2812 track->SetNUsed(shared);
e43c066c 2813 return shared;
2814}
44347160 2815//------------------------------------------------------------------------
a70ed6ad 2816Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
e43c066c 2817{
2818 //
2819 // find first shared track
2820 //
2821 // mean number of clusters
2822 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2823 //
2824 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2825 Int_t sharedtrack=100000;
2826 Int_t tracks[24],trackindex=0;
2827 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2828 //
2829 for (Int_t icluster=0;icluster<6;icluster++){
2830 if (clusterlist[icluster]<0) continue;
2831 Int_t index = clusterlist[icluster];
2832 Int_t l=(index & 0xf0000000) >> 28;
2833 Int_t c=(index & 0x0fffffff) >> 00;
5668b5b2 2834 // if (ny[l]<1.e-13){
2835 // printf("problem\n");
2836 // }
b9671574 2837 if (c>fgLayers[l].GetNumberOfClusters()) continue;
e43c066c 2838 //if (l>3) continue;
00a7cc50 2839 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2840 //
2841 Float_t deltan = 0;
2842 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
572f41f9 2843 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2844 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
e43c066c 2845 if (l<2 || l>3){
2846 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2847 }
2848 else{
2849 deltan = (cl->GetNz()-nz[l]);
2850 }
2851 if (deltan>2.0) continue; // extended - highly probable shared cluster
2852 //
2853 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2854 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2855 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2856 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
e43c066c 2857 trackindex++;
2858 }
2859 }
2860 }
2861 if (trackindex==0) return -1;
2862 if (trackindex==1){
2863 sharedtrack = tracks[0];
2864 }else{
2865 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2866 else{
2867 //
a5d0fae6 2868 Int_t tracks2[24], cluster[24];
2869 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
e43c066c 2870 Int_t index =0;
2871 //
2872 for (Int_t i=0;i<trackindex;i++){
2873 if (tracks[i]<0) continue;
a5d0fae6 2874 tracks2[index] = tracks[i];
e43c066c 2875 cluster[index]++;
2876 for (Int_t j=i+1;j<trackindex;j++){
2877 if (tracks[j]<0) continue;
2878 if (tracks[j]==tracks[i]){
2879 cluster[index]++;
2880 tracks[j]=-1;
2881 }
2882 }
2883 index++;
2884 }
2885 Int_t max=0;
2886 for (Int_t i=0;i<index;i++){
2887 if (cluster[index]>max) {
a5d0fae6 2888 sharedtrack=tracks2[index];
e43c066c 2889 max=cluster[index];
2890 }
2891 }
2892 }
2893 }
2894
2895 if (sharedtrack>=100000) return -1;
2896 //
2897 // make list of overlaps
2898 shared =0;
2899 for (Int_t icluster=0;icluster<6;icluster++){
2900 if (clusterlist[icluster]<0) continue;
2901 Int_t index = clusterlist[icluster];
2902 Int_t l=(index & 0xf0000000) >> 28;
2903 Int_t c=(index & 0x0fffffff) >> 00;
b9671574 2904 if (c>fgLayers[l].GetNumberOfClusters()) continue;
00a7cc50 2905 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
e43c066c 2906 if (l==0 || l==1){
2907 if (cl->GetNy()>2) continue;
2908 if (cl->GetNz()>2) continue;
2909 }
2910 if (l==4 || l==5){
2911 if (cl->GetNy()>3) continue;
2912 if (cl->GetNz()>3) continue;
2913 }
2914 //
2915 for (Int_t itrack=3;itrack>=0;itrack--){
b9671574 2916 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2917 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
e43c066c 2918 overlist[l]=index;
2919 shared++;
2920 }
2921 }
2922 }
2923 return sharedtrack;
2924}
44347160 2925//------------------------------------------------------------------------
15dd636f 2926AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
e43c066c 2927 //
2928 // try to find track hypothesys without conflicts
2929 // with minimal chi2;
2930 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2931 Int_t entries1 = arr1->GetEntriesFast();
2932 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
15dd636f 2933 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2934 Int_t entries2 = arr2->GetEntriesFast();
15dd636f 2935 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
e43c066c 2936 //
15dd636f 2937 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2938 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
6c23ffed 2939 if (track10->Pt()>0.5+track20->Pt()) return track10;
e43c066c 2940
2941 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 2942 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 2943 UnRegisterClusterTracks(track,trackID1);
2944 }
2945 //
2946 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 2947 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 2948 UnRegisterClusterTracks(track,trackID2);
2949 }
2950 Int_t index1=0;
2951 Int_t index2=0;
2952 Float_t maxconflicts=6;
2953 Double_t maxchi2 =1000.;
2954 //
2955 // get weight of hypothesys - using best hypothesy
2956 Double_t w1,w2;
2957
2958 Int_t list1[6],list2[6];
00a7cc50 2959 AliITSRecPoint *clist1[6], *clist2[6] ;
e43c066c 2960 RegisterClusterTracks(track10,trackID1);
2961 RegisterClusterTracks(track20,trackID2);
2962 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2963 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2964 UnRegisterClusterTracks(track10,trackID1);
2965 UnRegisterClusterTracks(track20,trackID2);
2966 //
2967 // normalized chi2
2968 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2969 Float_t nerry[6],nerrz[6];
2970 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2971 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2972 for (Int_t i=0;i<6;i++){
2973 if ( (erry1[i]>0) && (erry2[i]>0)) {
2974 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2975 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2976 }else{
2977 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2978 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2979 }
b9671574 2980 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2981 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2982 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2983 ncl1++;
2984 }
b9671574 2985 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2986 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2987 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
e43c066c 2988 ncl2++;
2989 }
2990 }
2991 chi21/=ncl1;
2992 chi22/=ncl2;
2993 //
2994 //
b9671574 2995 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2996 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
e43c066c 2997 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2998 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2999 //
3000 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
3001 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
6c23ffed 3002 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3003 );
3004 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
3005 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
6c23ffed 3006 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
e43c066c 3007 );
3008
3009 Double_t sumw = w1+w2;
3010 w1/=sumw;
3011 w2/=sumw;
3012 if (w1<w2*0.5) {
3013 w1 = (d2+0.5)/(d1+d2+1.);
3014 w2 = (d1+0.5)/(d1+d2+1.);
3015 }
3016 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
3017 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
3018 //
3019 // get pair of "best" hypothesys
3020 //
3021 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
3022 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
3023
3024 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
15dd636f 3025 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
e43c066c 3026 //if (track1->fFakeRatio>0) continue;
3027 RegisterClusterTracks(track1,trackID1);
3028 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
15dd636f 3029 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
e43c066c 3030
3031 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
3032 //if (track2->fFakeRatio>0) continue;
3033 Float_t nskipped=0;
3034 RegisterClusterTracks(track2,trackID2);
e43c066c 3035 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
3036 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
3037 UnRegisterClusterTracks(track2,trackID2);
3038 //
b9671574 3039 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
3040 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
e43c066c 3041 if (nskipped>0.5) continue;
3042 //
3043 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
3044 if (conflict1+1<cconflict1) continue;
3045 if (conflict2+1<cconflict2) continue;
3046 Float_t conflict=0;
3047 Float_t sumchi2=0;
3048 Float_t sum=0;
3049 for (Int_t i=0;i<6;i++){
3050 //
3051 Float_t c1 =0.; // conflict coeficients
3052 Float_t c2 =0.;
3053 if (clist1[i]&&clist2[i]){
3054 Float_t deltan = 0;
3055 if (i<2 || i>3){
3056 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
3057 }
3058 else{
3059 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3060 }
3061 c1 = 2./TMath::Max(3.+deltan,2.);
3062 c2 = 2./TMath::Max(3.+deltan,2.);
3063 }
3064 else{
3065 if (clist1[i]){
3066 Float_t deltan = 0;
3067 if (i<2 || i>3){
3068 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3069 }
3070 else{
3071 deltan = (clist1[i]->GetNz()-nz1[i]);
3072 }
3073 c1 = 2./TMath::Max(3.+deltan,2.);
3074 c2 = 0;
3075 }
3076
3077 if (clist2[i]){
3078 Float_t deltan = 0;
3079 if (i<2 || i>3){
3080 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3081 }
3082 else{
3083 deltan = (clist2[i]->GetNz()-nz2[i]);
3084 }
3085 c2 = 2./TMath::Max(3.+deltan,2.);
3086 c1 = 0;
3087 }
3088 }
3089 //
a5d0fae6 3090 chi21=0;chi22=0;
b9671574 3091 if (TMath::Abs(track1->GetDy(i))>0.) {
3092 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3093 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
e43c066c 3094 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
b9671574 3095 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
e43c066c 3096 }else{
b9671574 3097 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
e43c066c 3098 }
3099 //
b9671574 3100 if (TMath::Abs(track2->GetDy(i))>0.) {
3101 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3102 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
e43c066c 3103 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3104 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3105 }
3106 else{
b9671574 3107 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
e43c066c 3108 }
3109 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3110 if (chi21>0) sum+=w1;
3111 if (chi22>0) sum+=w2;
3112 conflict+=(c1+c2);
3113 }
b9671574 3114 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3115 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
e43c066c 3116 Double_t normchi2 = 2*conflict+sumchi2/sum;
3117 if ( normchi2 <maxchi2 ){
3118 index1 = itrack1;
3119 index2 = itrack2;
3120 maxconflicts = conflict;
3121 maxchi2 = normchi2;
3122 }
3123 }
3124 UnRegisterClusterTracks(track1,trackID1);
3125 }
3126 //
3127 // if (maxconflicts<4 && maxchi2<th0){
3128 if (maxchi2<th0*2.){
b9671574 3129 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
15dd636f 3130 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
b9671574 3131 track1->SetChi2MIP(5,maxconflicts);
3132 track1->SetChi2MIP(6,maxchi2);
3133 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
e43c066c 3134 // track1->UpdateESDtrack(AliESDtrack::kITSin);
b9671574 3135 track1->SetChi2MIP(8,index1);
e43c066c 3136 fBestTrackIndex[trackID1] =index1;
3137 UpdateESDtrack(track1, AliESDtrack::kITSin);
3138 }
b9671574 3139 else if (track10->GetChi2MIP(0)<th1){
3140 track10->SetChi2MIP(5,maxconflicts);
3141 track10->SetChi2MIP(6,maxchi2);
e43c066c 3142 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3143 UpdateESDtrack(track10,AliESDtrack::kITSin);
3144 }
3145
3146 for (Int_t itrack=0;itrack<entries1;itrack++){
15dd636f 3147 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
e43c066c 3148 UnRegisterClusterTracks(track,trackID1);
3149 }
3150 //
3151 for (Int_t itrack=0;itrack<entries2;itrack++){
15dd636f 3152 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
e43c066c 3153 UnRegisterClusterTracks(track,trackID2);
3154 }
3155
44347160 3156 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3157 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3158 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3159 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3160 RegisterClusterTracks(track10,trackID1);
3161 }
44347160 3162 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3163 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3164 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3165 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3166 RegisterClusterTracks(track20,trackID2);
3167 }
3168 return track10;
3169
3170}
44347160 3171//------------------------------------------------------------------------
e43c066c 3172void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3173 //--------------------------------------------------------------------
3174 // This function marks clusters assigned to the track
3175 //--------------------------------------------------------------------
3176 AliTracker::UseClusters(t,from);
3177
00a7cc50 3178 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
e43c066c 3179 //if (c->GetQ()>2) c->Use();
3180 if (c->GetSigmaZ2()>0.1) c->Use();
00a7cc50 3181 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
e43c066c 3182 //if (c->GetQ()>2) c->Use();
3183 if (c->GetSigmaZ2()>0.1) c->Use();
3184
3185}
44347160 3186//------------------------------------------------------------------------
15dd636f 3187void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
e43c066c 3188{
3189 //------------------------------------------------------------------
3190 // add track to the list of hypothesys
3191 //------------------------------------------------------------------
3192
fddf8459 3193 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3194 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
e43c066c 3195 //
3196 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3197 if (!array) {
3198 array = new TObjArray(10);
3199 fTrackHypothesys.AddAt(array,esdindex);
3200 }
3201 array->AddLast(track);
3202}
44347160 3203//------------------------------------------------------------------------
e43c066c 3204void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3205{
3206 //-------------------------------------------------------------------
3207 // compress array of track hypothesys
3208 // keep only maxsize best hypothesys
3209 //-------------------------------------------------------------------
3210 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3211 if (! (fTrackHypothesys.At(esdindex)) ) return;
3212 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3213 Int_t entries = array->GetEntriesFast();
3214 //
3215 //- find preliminary besttrack as a reference
3216 Float_t minchi2=10000;
3217 Int_t maxn=0;
15dd636f 3218 AliITStrackMI * besttrack=0;
e43c066c 3219 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
15dd636f 3220 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3221 if (!track) continue;
3222 Float_t chi2 = NormalizedChi2(track,0);
3223 //
b9671574 3224 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
e43c066c 3225 track->SetLabel(tpcLabel);
3226 CookdEdx(track);
b9671574 3227 track->SetFakeRatio(1.);
e43c066c 3228 CookLabel(track,0.); //For comparison only
3229 //
44347160 3230 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3231 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
e43c066c 3232 if (track->GetNumberOfClusters()<maxn) continue;
3233 maxn = track->GetNumberOfClusters();
3234 if (chi2<minchi2){
3235 minchi2=chi2;
3236 besttrack=track;
3237 }
3238 }
3239 else{
b9671574 3240 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3241 delete array->RemoveAt(itrack);
3242 }
e43c066c 3243 }
3244 }
3245 if (!besttrack) return;
3246 //
3247 //
3248 //take errors of best track as a reference
3249 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3250 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
a5d0fae6 3251 for (Int_t j=0;j<6;j++) {
9fd412a8 3252 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3253 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3254 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3255 ny[j] = besttrack->GetNy(j);
3256 nz[j] = besttrack->GetNz(j);
e43c066c 3257 }
3258 }
3259 //
3260 // calculate normalized chi2
3261 //
3262 Float_t * chi2 = new Float_t[entries];
3263 Int_t * index = new Int_t[entries];
3264 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3265 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3266 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3267 if (track){
bf1cd124 3268 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
b9671574 3269 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
44347160 3270 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3271 chi2[itrack] = track->GetChi2MIP(0);
628e7bb0 3272 else{
b9671574 3273 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3274 delete array->RemoveAt(itrack);
3275 }
3276 }
e43c066c 3277 }
3278 }
3279 //
3280 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3281 besttrack = (AliITStrackMI*)array->At(index[0]);
bf1cd124 3282 if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
44347160 3283 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
a5d0fae6 3284 for (Int_t j=0;j<6;j++){
9fd412a8 3285 if (besttrack->GetClIndex(j)>=0){
a5d0fae6 3286 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3287 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3288 ny[j] = besttrack->GetNy(j);
3289 nz[j] = besttrack->GetNz(j);
e43c066c 3290 }
3291 }
3292 }
3293 //
3294 // calculate one more time with updated normalized errors
3295 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3296 for (Int_t itrack=0;itrack<entries;itrack++){
15dd636f 3297 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
e43c066c 3298 if (track){
bf1cd124 3299 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3300 AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
44347160 3301 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
b9671574 3302 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
628e7bb0 3303 else
3304 {
b9671574 3305 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3306 delete array->RemoveAt(itrack);
3307 }
3308 }
e43c066c 3309 }
3310 }
3311 entries = array->GetEntriesFast();
3312 //
628e7bb0 3313 //
e43c066c 3314 if (entries>0){
3315 TObjArray * newarray = new TObjArray();
3316 TMath::Sort(entries,chi2,index,kFALSE);
15dd636f 3317 besttrack = (AliITStrackMI*)array->At(index[0]);
e43c066c 3318 if (besttrack){
bf1cd124 3319 AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
e43c066c 3320 //
a5d0fae6 3321 for (Int_t j=0;j<6;j++){
3322 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3323 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3324 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3325 ny[j] = besttrack->GetNy(j);
3326 nz[j] = besttrack->GetNz(j);
e43c066c 3327 }
3328 }
b9671574 3329 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
a5d0fae6 3330 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
e43c066c 3331 Float_t minn = besttrack->GetNumberOfClusters()-3;
3332 Int_t accepted=0;
3333 for (Int_t i=0;i<entries;i++){
15dd636f 3334 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
e43c066c 3335 if (!track) continue;
3336 if (accepted>maxcut) break;
b9671574 3337 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3338 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3339 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
628e7bb0 3340 delete array->RemoveAt(index[i]);
3341 continue;
3342 }
e43c066c 3343 }
b9671574 3344 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3345 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
628e7bb0 3346 if (!shortbest) accepted++;
e43c066c 3347 //
3348 newarray->AddLast(array->RemoveAt(index[i]));
a5d0fae6 3349 for (Int_t j=0;j<6;j++){
3350 if (nz[j]==0){
3351 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3352 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3353 ny[j] = track->GetNy(j);
3354 nz[j] = track->GetNz(j);
e43c066c 3355 }
3356 }
3357 }
3358 else{
3359 delete array->RemoveAt(index[i]);
3360 }
3361 }
3362 array->Delete();
3363 delete fTrackHypothesys.RemoveAt(esdindex);
3364 fTrackHypothesys.AddAt(newarray,esdindex);
3365 }
3366 else{
3367 array->Delete();
3368 delete fTrackHypothesys.RemoveAt(esdindex);
3369 }
3370 }
3371 delete [] chi2;
3372 delete [] index;
3373}
44347160 3374//------------------------------------------------------------------------
15dd636f 3375AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
e43c066c 3376{
3377 //-------------------------------------------------------------
3378 // try to find best hypothesy
3379 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3380 //-------------------------------------------------------------
3381 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3382 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3383 if (!array) return 0;
3384 Int_t entries = array->GetEntriesFast();
3385 if (!entries) return 0;
3386 Float_t minchi2 = 100000;
15dd636f 3387 AliITStrackMI * besttrack=0;
e43c066c 3388 //
15dd636f 3389 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3390 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
afd25725 3391 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3392 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
e43c066c 3393 //
3394 for (Int_t i=0;i<entries;i++){
15dd636f 3395 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3396 if (!track) continue;
628e7bb0 3397 Float_t sigmarfi,sigmaz;
3398 GetDCASigma(track,sigmarfi,sigmaz);
b9671574 3399 track->SetDnorm(0,sigmarfi);
3400 track->SetDnorm(1,sigmaz);
628e7bb0 3401 //
b9671574 3402 track->SetChi2MIP(1,1000000);
3403 track->SetChi2MIP(2,1000000);
3404 track->SetChi2MIP(3,1000000);
e43c066c 3405 //
3406 // backtrack
15dd636f 3407 backtrack = new(backtrack) AliITStrackMI(*track);
afd25725 3408 if (track->GetConstrain()) {
e50912db 3409 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
333d86cb 3410 if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
3411 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
3412 }
6c94f330 3413 backtrack->ResetCovariance(10.);
628e7bb0 3414 }else{
6c94f330 3415 backtrack->ResetCovariance(10.);
628e7bb0 3416 }
e43c066c 3417 backtrack->ResetClusters();
628e7bb0 3418
e43c066c 3419 Double_t x = original->GetX();
3420 if (!RefitAt(x,backtrack,track)) continue;
628e7bb0 3421 //
b9671574 3422 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
e43c066c 3423 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
44347160 3424 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
b9671574 3425 track->SetChi22(GetMatchingChi2(backtrack,original));
e43c066c 3426
b9671574 3427 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3428 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3429 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
e43c066c 3430
3431
44347160 3432 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
e43c066c 3433 //
3434 //forward track - without constraint
15dd636f 3435 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
e43c066c 3436 forwardtrack->ResetClusters();
3437 x = track->GetX();
628e7bb0 3438 RefitAt(x,forwardtrack,track);
b9671574 3439 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
44347160 3440 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3441 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
e43c066c 3442
791f9a2a 3443 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3444 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3445 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3446 forwardtrack->SetD(0,track->GetD(0));
3447 forwardtrack->SetD(1,track->GetD(1));
e43c066c 3448 {
3449 Int_t list[6];
00a7cc50 3450 AliITSRecPoint* clist[6];
b9671574 3451 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3452 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
e43c066c 3453 }
3454
b9671574 3455 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
44347160 3456 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3457 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
b9671574 3458 track->SetChi2MIP(3,1000);
e43c066c 3459 continue;
3460 }
b9671574 3461 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
e43c066c 3462 //
3463 for (Int_t ichi=0;ichi<5;ichi++){
b9671574 3464 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
e43c066c 3465 }
3466 if (chi2 < minchi2){
15dd636f 3467 //besttrack = new AliITStrackMI(*forwardtrack);
99c2ee26 3468 besttrack = track;
e43c066c 3469 besttrack->SetLabel(track->GetLabel());
b9671574 3470 besttrack->SetFakeRatio(track->GetFakeRatio());
e43c066c 3471 minchi2 = chi2;
791f9a2a 3472 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3473 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
b9671574 3474 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
e43c066c 3475 }
3476 }
3477 delete backtrack;
3478 delete forwardtrack;
3479 Int_t accepted=0;
3480 for (Int_t i=0;i<entries;i++){
fddf8459 3481 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3482
e43c066c 3483 if (!track) continue;
628e7bb0 3484
44347160 3485 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
e43c066c 3486 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
b9671574 3487 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3488 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
628e7bb0 3489 delete array->RemoveAt(i);
3490 continue;
3491 }
e43c066c 3492 }
3493 else{
3494 accepted++;
3495 }
3496 }
3497 //
3498 array->Compress();
3499 SortTrackHypothesys(esdindex,checkmax,1);
fddf8459 3500
e43c066c 3501 array = (TObjArray*) fTrackHypothesys.At(esdindex);
afdf9b9c 3502 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
15dd636f 3503 besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3504 if (!besttrack) return 0;
b9671574 3505 besttrack->SetChi2MIP(8,0);
e43c066c 3506 fBestTrackIndex[esdindex]=0;
3507 entries = array->GetEntriesFast();
15dd636f 3508 AliITStrackMI *longtrack =0;
e43c066c 3509 minchi2 =1000;
b9671574 3510 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
6518a6c5 3511 for (Int_t itrack=entries-1;itrack>0;itrack--) {
15dd636f 3512 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
b9671574 3513 if (!track->GetConstrain()) continue;
3514 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3515 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3516 if (track->GetChi2MIP(0)>4.) continue;
3517 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
e43c066c 3518 longtrack =track;
3519 }
3520 //if (longtrack) besttrack=longtrack;
3521
3522 Int_t list[6];
00a7cc50 3523 AliITSRecPoint * clist[6];
e43c066c 3524 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
44347160 3525 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3526 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
e43c066c 3527 RegisterClusterTracks(besttrack,esdindex);
3528 }
3529 //
3530 //
3531 if (shared>0.0){
3532 Int_t nshared;
3533 Int_t overlist[6];
3534 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3535 if (sharedtrack>=0){
3536 //
3537 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3538 if (besttrack){
3539 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3540 }
3541 else return 0;
3542 }
3543 }
3544
3545 if (shared>2.5) return 0;
3546 if (shared>1.0) return besttrack;
3547 //
628e7bb0 3548 // Don't sign clusters if not gold track
3549 //
3550 if (!besttrack->IsGoldPrimary()) return besttrack;
b9671574 3551 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
628e7bb0 3552 //
e43c066c 3553 if (fConstraint[fPass]){
3554 //
3555 // sign clusters
3556 //
3557 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3558 for (Int_t i=0;i<6;i++){
b9671574 3559 Int_t index = besttrack->GetClIndex(i);
9fd412a8 3560 if (index<0) continue;
e43c066c 3561 Int_t ilayer = (index & 0xf0000000) >> 28;
b9671574 3562 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
00a7cc50 3563 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
e43c066c 3564 if (!c) continue;
3565 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3566 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3567 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
572f41f9 3568 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3569 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
e43c066c 3570 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3571
3572 Bool_t cansign = kTRUE;
3573 for (Int_t itrack=0;itrack<entries; itrack++){
15dd636f 3574 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
e43c066c 3575 if (!track) continue;
b9671574 3576 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
9fd412a8 3577 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
e43c066c 3578 cansign = kFALSE;
3579 break;
3580 }
3581 }
3582 if (cansign){
b9671574 3583 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3584 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
e43c066c 3585 if (!c->IsUsed()) c->Use();
3586 }
3587 }
3588 }
3589 return besttrack;
3590}
44347160 3591//------------------------------------------------------------------------
e43c066c 3592void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3593{
3594 //
3595 // get "best" hypothesys
628e7bb0 3596 //
e43c066c 3597
3598 Int_t nentries = itsTracks.GetEntriesFast();
3599 for (Int_t i=0;i<nentries;i++){
15dd636f 3600 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
e43c066c 3601 if (!track) continue;
3602 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3603 if (!array) continue;
3604 if (array->GetEntriesFast()<=0) continue;
3605 //
15dd636f 3606 AliITStrackMI* longtrack=0;
e43c066c 3607 Float_t minn=0;
3608 Float_t maxchi2=1000;
3609 for (Int_t j=0;j<array->GetEntriesFast();j++){
a5d0fae6 3610 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3611 if (!trackHyp) continue;
3612 if (trackHyp->GetGoldV0()) {
3613 longtrack = trackHyp; //gold V0 track taken
628e7bb0 3614 break;
3615 }
a5d0fae6 3616 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3617 Float_t chi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3618 if (fAfterV0){
a5d0fae6 3619 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
628e7bb0 3620 }
a5d0fae6 3621 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
628e7bb0 3622 //
3623 if (chi2 > maxchi2) continue;
a5d0fae6 3624 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
628e7bb0 3625 maxchi2 = chi2;
a5d0fae6 3626 longtrack=trackHyp;
e43c066c 3627 }
628e7bb0 3628 //
3629 //
3630 //
15dd636f 3631 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
e43c066c 3632 if (!longtrack) {longtrack = besttrack;}
3633 else besttrack= longtrack;
628e7bb0 3634 //
afd25725 3635 if (besttrack) {
e43c066c 3636 Int_t list[6];
00a7cc50 3637 AliITSRecPoint * clist[6];
e43c066c 3638 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3639 //
b9671574 3640 track->SetNUsed(shared);
3641 track->SetNSkipped(besttrack->GetNSkipped());
3642 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
afd25725 3643 if (shared>0) {
3644 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
e43c066c 3645 Int_t nshared;
3646 Int_t overlist[6];
3647 //
3648 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3649 //if (sharedtrack==-1) sharedtrack=0;
afd25725 3650 if (sharedtrack>=0) {
e43c066c 3651 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3652 }
3653 }
afd25725 3654 if (besttrack&&fAfterV0) {
628e7bb0 3655 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3656 }
e43c066c 3657 if (besttrack&&fConstraint[fPass])
3658 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
afd25725 3659 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3660 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3661 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
e43c066c 3662 }
3663
3664 }
3665 }
3666}
44347160 3667//------------------------------------------------------------------------
15dd636f 3668void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
e43c066c 3669 //--------------------------------------------------------------------
3670 //This function "cooks" a track label. If label<0, this track is fake.
3671 //--------------------------------------------------------------------
3672 Int_t tpcLabel=-1;
3673
d3dbf323 3674 if (track->GetESDtrack()){
3675 tpcLabel = track->GetESDtrack()->GetTPCLabel();
3676 ULong_t trStatus=track->GetESDtrack()->GetStatus();
3677 if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
3678 }
b9671574 3679 track->SetChi2MIP(9,0);
e43c066c 3680 Int_t nwrong=0;
3681 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3682 Int_t cindex = track->GetClusterIndex(i);
3683 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3684 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
e43c066c 3685 Int_t isWrong=1;
3686 for (Int_t ind=0;ind<3;ind++){
84a21804 3687 if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
bf1cd124 3688 //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
e43c066c 3689 }
b9671574 3690 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3691 nwrong+=isWrong;
3692 }
7d43b4c4 3693 Int_t nclusters = track->GetNumberOfClusters();
3694 if (nclusters > 0) //PH Some tracks don't have any cluster
3695 track->SetFakeRatio(double(nwrong)/double(nclusters));
84a21804 3696 if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
3697 track->SetLabel(-tpcLabel);
3698 } else {
3699 track->SetLabel(tpcLabel);
e43c066c 3700 }
9be1d1c7 3701 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
e43c066c 3702
3703}
44347160 3704//------------------------------------------------------------------------
88e3c173 3705void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
3706 //
3707 // Fill the dE/dx in this track
e43c066c 3708 //
b9671574 3709 track->SetChi2MIP(9,0);
e43c066c 3710 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3711 Int_t cindex = track->GetClusterIndex(i);
3712 Int_t l=(cindex & 0xf0000000) >> 28;
00a7cc50 3713 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
b9671574 3714 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
e43c066c 3715 Int_t isWrong=1;
3716 for (Int_t ind=0;ind<3;ind++){
3717 if (cl->GetLabel(ind)==lab) isWrong=0;
3718 }
b9671574 3719 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
e43c066c 3720 }
e43c066c 3721 Double_t low=0.;
3722 Double_t up=0.51;
09cf9d66 3723 track->CookdEdx(low,up);
e43c066c 3724}
44347160 3725//------------------------------------------------------------------------
e50912db 3726void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
e43c066c 3727 //
a70ed6ad 3728 // Create some arrays
e43c066c 3729 //
afd25725 3730 if (fCoefficients) delete []fCoefficients;
3731 fCoefficients = new Float_t[ntracks*48];
3732 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
e43c066c 3733}
44347160 3734//------------------------------------------------------------------------
00a7cc50 3735Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
e43c066c 3736{
3737 //
a70ed6ad 3738 // Compute predicted chi2
e43c066c 3739 //
242bd643 3740 // Take into account the mis-alignment (bring track to cluster plane)
3741 Double_t xTrOrig=track->GetX();
3742 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
d9ead1a0 3743 Float_t erry,errz,covyz;
e43c066c 3744 Float_t theta = track->GetTgl();
3745 Float_t phi = track->GetSnp();
242bd643 3746 phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
d9ead1a0 3747 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
4187a601 3748 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
4187a601 3749 AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
d9ead1a0 3750 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
1c97ce2f 3751 // Bring the track back to detector plane in ideal geometry
3752 // [mis-alignment will be accounted for in UpdateMI()]
9be1d1c7 3753 if (!track->Propagate(xTrOrig)) return 1000.;
e43c066c 3754 Float_t ny,nz;
e50912db 3755 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
e43c066c 3756 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3757 if (delta>1){
3758 chi2+=0.5*TMath::Min(delta/2,2.);
3759 chi2+=2.*cluster->GetDeltaProbability();
3760 }
3761 //
b9671574 3762 track->SetNy(layer,ny);
3763 track->SetNz(layer,nz);
3764 track->SetSigmaY(layer,erry);
3765 track->SetSigmaZ(layer, errz);
d9ead1a0 3766 track->SetSigmaYZ(layer,covyz);
e43c066c 3767 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
60e55aee 3768 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
e43c066c 3769 return chi2;
3770
3771}
e50912db 3772//------------------------------------------------------------------------
3773Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
e43c066c 3774{
3775 //
a70ed6ad 3776 // Update ITS track
e43c066c 3777 //
3778 Int_t layer = (index & 0xf0000000) >> 28;
b9671574 3779 track->SetClIndex(layer, index);
572f41f9 3780 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3781 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3782 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3783 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3784 }
e43c066c 3785 }
a504d56f 3786
88e3c173 3787 if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
a504d56f 3788
afd25725 3789
1c97ce2f 3790 // Take into account the mis-alignment (bring track to cluster plane)
3791 Double_t xTrOrig=track->GetX();
4187a601 3792 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3793 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3794 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3795 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
fddf8459 3796
9be1d1c7 3797 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
1f3e997f 3798
150f264c 3799 AliCluster c(*cl);
3800 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3801 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
d9ead1a0 3802 c.SetSigmaYZ(track->GetSigmaYZ(layer));
150f264c 3803
1c97ce2f 3804
3805 Int_t updated = track->UpdateMI(&c,chi2,index);
1c97ce2f 3806 // Bring the track back to detector plane in ideal geometry
9be1d1c7 3807 if (!track->Propagate(xTrOrig)) return 0;
d9ead1a0 3808
4187a601 3809 if(!updated) AliDebug(2,"update failed");
1c97ce2f 3810 return updated;
e43c066c 3811}
150f264c 3812
44347160 3813//------------------------------------------------------------------------
a70ed6ad 3814void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
628e7bb0 3815{
3816 //
3817 //DCA sigmas parameterization
3818 //to be paramterized using external parameters in future
3819 //
3820 //
afd25725 3821 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3822 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
628e7bb0 3823}
e50912db 3824//------------------------------------------------------------------------
a70ed6ad 3825void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
e43c066c 3826{
3827 //
a70ed6ad 3828 // Clusters from delta electrons?
e43c066c 3829 //
a70ed6ad 3830 Int_t entries = clusterArray->GetEntriesFast();
e43c066c 3831 if (entries<4) return;
a70ed6ad 3832 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
e43c066c 3833 Int_t layer = cluster->GetLayer();
3834 if (layer>1) return;
3835 Int_t index[10000];
3836 Int_t ncandidates=0;
3837 Float_t r = (layer>0)? 7:4;
3838 //
3839 for (Int_t i=0;i<entries;i++){
a70ed6ad 3840 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
e43c066c 3841 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3842 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3843 index[ncandidates] = i; //candidate to belong to delta electron track
3844 ncandidates++;
3845 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3846 cl0->SetDeltaProbability(1);
3847 }
3848 }
3849 //
3850 //
3851 //
3852 for (Int_t i=0;i<ncandidates;i++){
a70ed6ad 3853 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
e43c066c 3854 if (cl0->GetDeltaProbability()>0.8) continue;
3855 //
3856 Int_t ncl = 0;
3857 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3858 sumy=sumz=sumy2=sumyz=sumw=0.0;
3859 for (Int_t j=0;j<ncandidates;j++){
3860 if (i==j) continue;
a70ed6ad 3861 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
e43c066c 3862 //
3863 Float_t dz = cl0->GetZ()-cl1->GetZ();
3864 Float_t dy = cl0->GetY()-cl1->GetY();
3865 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3866 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3867 y[ncl] = cl1->GetY();
3868 z[ncl] = cl1->GetZ();
3869 sumy+= y[ncl]*weight;
3870 sumz+= z[ncl]*weight;
3871 sumy2+=y[ncl]*y[ncl]*weight;
3872 sumyz+=y[ncl]*z[ncl]*weight;
3873 sumw+=weight;
3874 ncl++;
3875 }
3876 }
3877 if (ncl<4) continue;
3878 Float_t det = sumw*sumy2 - sumy*sumy;
3879 Float_t delta=1000;
3880 if (TMath::Abs(det)>0.01){
3881 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3882 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3883 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3884 }
3885 else{
3886 Float_t z0 = sumyz/sumy;
3887 delta = TMath::Abs(cl0->GetZ()-z0);
3888 }
3889 if ( delta<0.05) {
3890 cl0->SetDeltaProbability(1-20.*delta);
3891 }
3892 }
3893}
44347160 3894//------------------------------------------------------------------------
15dd636f 3895void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
e43c066c 3896{
3897 //
a70ed6ad 3898 // Update ESD track
e43c066c 3899 //
3900 track->UpdateESDtrack(flags);
b9671574 3901 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
99c2ee26 3902 if (oldtrack) delete oldtrack;
b9671574 3903 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
5668b5b2 3904 // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
3905 // printf("Problem\n");
3906 // }
e43c066c 3907}
44347160 3908//------------------------------------------------------------------------
81e97e0d 3909Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3910 //
ae00569a 3911 // Get nearest upper layer close to the point xr.
81e97e0d 3912 // rough approximation
3913 //
bf6adc12 3914 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
81e97e0d 3915 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3916 Int_t res =6;
3917 for (Int_t i=0;i<6;i++){
bf6adc12 3918 if (radius<kRadiuses[i]){
81e97e0d 3919 res =i;
3920 break;
3921 }
3922 }
3923 return res;
3924}
44347160 3925//------------------------------------------------------------------------
e50912db 3926void AliITStrackerMI::BuildMaterialLUT(TString material) {
3927 //--------------------------------------------------------------------
3928 // Fill a look-up table with mean material
3929 //--------------------------------------------------------------------
3930
3931 Int_t n=1000;
3932 Double_t mparam[7];
3933 Double_t point1[3],point2[3];
3934 Double_t phi,cosphi,sinphi,z;
3935 // 0-5 layers, 6 pipe, 7-8 shields
1ec3c859 3936 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3937 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
e50912db 3938
3939 Int_t ifirst=0,ilast=0;
3940 if(material.Contains("Pipe")) {
3941 ifirst=6; ilast=6;
3942 } else if(material.Contains("Shields")) {
3943 ifirst=7; ilast=8;
3944 } else if(material.Contains("Layers")) {
3945 ifirst=0; ilast=5;
3946 } else {
3947 Error("BuildMaterialLUT","Wrong layer name\n");
3948 }
3949
3950 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3951 Double_t param[5]={0.,0.,0.,0.,0.};
3952 for (Int_t i=0; i<n; i++) {
3953 phi = 2.*TMath::Pi()*gRandom->Rndm();
3954 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3955 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3956 point1[0] = rmin[imat]*cosphi;
3957 point1[1] = rmin[imat]*sinphi;
3958 point1[2] = z;
3959 point2[0] = rmax[imat]*cosphi;
3960 point2[1] = rmax[imat]*sinphi;
3961 point2[2] = z;
3962 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3963 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3964 }
3965 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3966 if(imat<=5) {
3967 fxOverX0Layer[imat] = param[1];
3968 fxTimesRhoLayer[imat] = param[0]*param[4];
3969 } else if(imat==6) {
3970 fxOverX0Pipe = param[1];
3971 fxTimesRhoPipe = param[0]*param[4];
3972 } else if(imat==7) {
3973 fxOverX0Shield[0] = param[1];
3974 fxTimesRhoShield[0] = param[0]*param[4];
3975 } else if(imat==8) {
3976 fxOverX0Shield[1] = param[1];
3977 fxTimesRhoShield[1] = param[0]*param[4];
3978 }
3979 }
3980 /*
3981 printf("%s\n",material.Data());
3982 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3983 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3984 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3985 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3986 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3987 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3988 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3989 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3990 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3991 */
3992 return;
3993}
3994//------------------------------------------------------------------------
3995Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3996 TString direction) {
3997 //-------------------------------------------------------------------
3998 // Propagate beyond beam pipe and correct for material
3999 // (material budget in different ways according to fUseTGeo value)
7131593b 4000 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4001 //-------------------------------------------------------------------
4002
4003 // Define budget mode:
4004 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4005 // 1: material from TGeo in one step (on the fly)
e50912db 4006 // 2: material from lut
9be1d1c7 4007 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4008 Int_t mode;
4009 switch(fUseTGeo) {
4010 case 0:
4011 mode=0;
4012 break;
4013 case 1:
4014 mode=1;
4015 break;
4016 case 2:
4017 mode=2;
4018 break;
4019 case 3:
4020 if(fTrackingPhase.Contains("Clusters2Tracks"))
4021 { mode=3; } else { mode=1; }
4022 break;
4023 case 4:
4024 if(fTrackingPhase.Contains("Clusters2Tracks"))
4025 { mode=3; } else { mode=2; }
4026 break;
4027 default:
4028 mode=0;
4029 break;
4030 }
4031 if(fTrackingPhase.Contains("Default")) mode=0;
4032
4033 Int_t index=fCurrentEsdTrack;
4034
4035 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4036 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
70e83b26 4037 Double_t xToGo;
4038 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4039
4040 Double_t xOverX0,x0,lengthTimesMeanDensity;
e50912db 4041
4042 switch(mode) {
4043 case 0:
4044 xOverX0 = AliITSRecoParam::GetdPipe();
4045 x0 = AliITSRecoParam::GetX0Be();
4046 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4047 lengthTimesMeanDensity *= dir;
7131593b 4048 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4049 break;
4050 case 1:
4051 if (!t->PropagateToTGeo(xToGo,1)) return 0;
e50912db 4052 break;
4053 case 2:
4054 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
4055 xOverX0 = fxOverX0Pipe;
4056 lengthTimesMeanDensity = fxTimesRhoPipe;
9be1d1c7 4057 lengthTimesMeanDensity *= dir;
7131593b 4058 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4059 break;
4060 case 3:
4061 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
4062 if(fxOverX0PipeTrks[index]<0) {
4063 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4064 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4065 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4066 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
4067 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4068 return 1;
4069 }
4070 xOverX0 = fxOverX0PipeTrks[index];
4071 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
9be1d1c7 4072 lengthTimesMeanDensity *= dir;
7131593b 4073 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4074 break;
4075 }
4076
e50912db 4077 return 1;
4078}
4079//------------------------------------------------------------------------
4080Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4081 TString shield,
4082 TString direction) {
4083 //-------------------------------------------------------------------
4084 // Propagate beyond SPD or SDD shield and correct for material
4085 // (material budget in different ways according to fUseTGeo value)
7131593b 4086 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4087 //-------------------------------------------------------------------
4088
4089 // Define budget mode:
4090 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4091 // 1: material from TGeo in steps of X cm (on the fly)
4092 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4093 // 2: material from lut
9be1d1c7 4094 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4095 Int_t mode;
4096 switch(fUseTGeo) {
4097 case 0:
4098 mode=0;
4099 break;
4100 case 1:
4101 mode=1;
4102 break;
4103 case 2:
4104 mode=2;
4105 break;
4106 case 3:
4107 if(fTrackingPhase.Contains("Clusters2Tracks"))
4108 { mode=3; } else { mode=1; }
4109 break;
4110 case 4:
4111 if(fTrackingPhase.Contains("Clusters2Tracks"))
4112 { mode=3; } else { mode=2; }
4113 break;
4114 default:
4115 mode=0;
4116 break;
4117 }
4118 if(fTrackingPhase.Contains("Default")) mode=0;
4119
4120 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4121 Double_t rToGo;
4122 Int_t shieldindex=0;
4123 if (shield.Contains("SDD")) { // SDDouter
4124 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4125 shieldindex=1;
4126 } else if (shield.Contains("SPD")) { // SPDouter
4127 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4128 shieldindex=0;
4129 } else {
4130 Error("CorrectForShieldMaterial"," Wrong shield name\n");
e50912db 4131 return 0;
4132 }
67178f34 4133
4134 // do nothing if we are already beyond the shield
4135 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4136 if(dir<0 && rTrack > rToGo) return 1; // going outward
4137 if(dir>0 && rTrack < rToGo) return 1; // going inward
4138
4139
70e83b26 4140 Double_t xToGo;
4141 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4142
4143 Int_t index=2*fCurrentEsdTrack+shieldindex;
4144
4145 Double_t xOverX0,x0,lengthTimesMeanDensity;
9be1d1c7 4146 Int_t nsteps=1;
e50912db 4147
4148 switch(mode) {
4149 case 0:
4150 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4151 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4152 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4153 lengthTimesMeanDensity *= dir;
7131593b 4154 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4155 break;
4156 case 1:
9be1d1c7 4157 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4158 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4159 break;
4160 case 2:
4161 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4162 xOverX0 = fxOverX0Shield[shieldindex];
4163 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
9be1d1c7 4164 lengthTimesMeanDensity *= dir;
7131593b 4165 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4166 break;
4167 case 3:
4168 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4169 if(fxOverX0ShieldTrks[index]<0) {
4170 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4171 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4172 ((1.-t->GetSnp())*(1.+t->GetSnp())));
e50912db 4173 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4174 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4175 return 1;
4176 }
4177 xOverX0 = fxOverX0ShieldTrks[index];
4178 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
9be1d1c7 4179 lengthTimesMeanDensity *= dir;
7131593b 4180 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4181 break;
4182 }
4183
e50912db 4184 return 1;
4185}
4186//------------------------------------------------------------------------
4187Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4188 Int_t layerindex,
4189 Double_t oldGlobXYZ[3],
4190 TString direction) {
4191 //-------------------------------------------------------------------
4192 // Propagate beyond layer and correct for material
4193 // (material budget in different ways according to fUseTGeo value)
7131593b 4194 // Add time if going outward (PropagateTo or PropagateToTGeo)
e50912db 4195 //-------------------------------------------------------------------
4196
4197 // Define budget mode:
4198 // 0: material from AliITSRecoParam (hard coded)
9be1d1c7 4199 // 1: material from TGeo in stepsof X cm (on the fly)
4200 // X = AliITSRecoParam::GetStepSizeTGeo()
e50912db 4201 // 2: material from lut
9be1d1c7 4202 // 3: material from TGeo in one step (same for all hypotheses)
e50912db 4203 Int_t mode;
4204 switch(fUseTGeo) {
4205 case 0:
4206 mode=0;
4207 break;
4208 case 1:
4209 mode=1;
4210 break;
4211 case 2:
4212 mode=2;
4213 break;
4214 case 3:
4215 if(fTrackingPhase.Contains("Clusters2Tracks"))
4216 { mode=3; } else { mode=1; }
4217 break;
4218 case 4:
4219 if(fTrackingPhase.Contains("Clusters2Tracks"))
4220 { mode=3; } else { mode=2; }
4221 break;
4222 default:
4223 mode=0;
4224 break;
4225 }
4226 if(fTrackingPhase.Contains("Default")) mode=0;
4227
4228 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4229
4230 Double_t r=fgLayers[layerindex].GetR();
4231 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4232
4233 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
70e83b26 4234 Double_t xToGo;
4235 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
e50912db 4236
4237 Int_t index=6*fCurrentEsdTrack+layerindex;
4238
e50912db 4239
4240 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
9be1d1c7 4241 Int_t nsteps=1;
7131593b 4242
4243 // back before material (no correction)
d634c32b 4244 Double_t rOld,xOld;
7131593b 4245 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4246 if (!t->GetLocalXat(rOld,xOld)) return 0;
4247 if (!t->Propagate(xOld)) return 0;
e50912db 4248
4249 switch(mode) {
4250 case 0:
4251 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4252 lengthTimesMeanDensity = xOverX0*x0;
9be1d1c7 4253 lengthTimesMeanDensity *= dir;
7131593b 4254 // Bring the track beyond the material
4255 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4256 break;
4257 case 1:
9be1d1c7 4258 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
7131593b 4259 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
e50912db 4260 break;
4261 case 2:
4262 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4263 xOverX0 = fxOverX0Layer[layerindex];
4264 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
9be1d1c7 4265 lengthTimesMeanDensity *= dir;
7131593b 4266 // Bring the track beyond the material
4267 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4268 break;
4269 case 3:
4270 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
7131593b 4271 if(fxOverX0LayerTrks[index]<0) {
4272 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4273 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
e50912db 4274 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
60e55aee 4275 ((1.-t->GetSnp())*(1.+t->GetSnp())));
7131593b 4276 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4277 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4278 return 1;
e50912db 4279 }
4280 xOverX0 = fxOverX0LayerTrks[index];
4281 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
9be1d1c7 4282 lengthTimesMeanDensity *= dir;
7131593b 4283 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
e50912db 4284 break;
4285 }
4286
7131593b 4287
e50912db 4288 return 1;
4289}
4290//------------------------------------------------------------------------
4291void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4292 //-----------------------------------------------------------------
4293 // Initialize LUT for storing material for each prolonged track
4294 //-----------------------------------------------------------------
4295 fxOverX0PipeTrks = new Float_t[ntracks];
4296 fxTimesRhoPipeTrks = new Float_t[ntracks];
4297 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4298 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4299 fxOverX0LayerTrks = new Float_t[ntracks*6];
4300 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4301
4302 for(Int_t i=0; i<ntracks; i++) {
4303 fxOverX0PipeTrks[i] = -1.;
4304 fxTimesRhoPipeTrks[i] = -1.;
4305 }
4306 for(Int_t j=0; j<ntracks*2; j++) {
4307 fxOverX0ShieldTrks[j] = -1.;
4308 fxTimesRhoShieldTrks[j] = -1.;
4309 }
4310 for(Int_t k=0; k<ntracks*6; k++) {
4311 fxOverX0LayerTrks[k] = -1.;
4312 fxTimesRhoLayerTrks[k] = -1.;
4313 }
4314
4315 fNtracks = ntracks;
4316
4317 return;
4318}
4319//------------------------------------------------------------------------
4320void AliITStrackerMI::DeleteTrksMaterialLUT() {
4321 //-----------------------------------------------------------------
4322 // Delete LUT for storing material for each prolonged track
4323 //-----------------------------------------------------------------
4324 if(fxOverX0PipeTrks) {
4325 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4326 }
4327 if(fxOverX0ShieldTrks) {
4328 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4329 }
4330
4331 if(fxOverX0LayerTrks) {
4332 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4333 }
4334 if(fxTimesRhoPipeTrks) {
4335 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4336 }
4337 if(fxTimesRhoShieldTrks) {
4338 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4339 }
4340 if(fxTimesRhoLayerTrks) {
4341 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4342 }
4343 return;
4344}
4345//------------------------------------------------------------------------
4fa7f7d1 4346void AliITStrackerMI::SetForceSkippingOfLayer() {
4347 //-----------------------------------------------------------------
4348 // Check if we are forced to skip layers
4349 // either we set to skip them in RecoParam
4350 // or they were off during data-taking
4351 //-----------------------------------------------------------------
4352
4353 const AliEventInfo *eventInfo = GetEventInfo();
6262dd3d 4354
4fa7f7d1 4355 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4356 fForceSkippingOfLayer[l] = 0;
4357 // check reco param
4358 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4359 // check run info
4360
87b4605f 4361 if(eventInfo &&
4362 AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
4fa7f7d1 4363 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4364 if(l==0 || l==1) {
4365 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4366 } else if(l==2 || l==3) {
4367 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4368 } else {
4369 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4370 }
4371 }
4372 }
4373 return;
4374}
4375//------------------------------------------------------------------------
a70ed6ad 4376Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
6518a6c5 4377 Int_t ilayer,Int_t idet) const {
2755f080 4378 //-----------------------------------------------------------------
4379 // This method is used to decide whether to allow a prolongation
4380 // without clusters, because we want to skip the layer.
4381 // In this case the return value is > 0:
4382 // return 1: the user requested to skip a layer
371164ec 4383 // return 2: track outside z acceptance
2755f080 4384 //-----------------------------------------------------------------
e43c066c 4385
4fa7f7d1 4386 if (ForceSkippingOfLayer(ilayer)) return 1;
51ad6848 4387
371164ec 4388 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4389
4390 if (idet<0 && // out in z
4391 ilayer>innerLayCanSkip &&
4392 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
2755f080 4393 // check if track will cross SPD outer layer
4394 Double_t phiAtSPD2,zAtSPD2;
6518a6c5 4395 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
2755f080 4396 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4397 }
371164ec 4398 return 2; // always allow skipping, changed on 05.11.2009
2755f080 4399 }
51ad6848 4400
2755f080 4401 return 0;
4402}
4403//------------------------------------------------------------------------
23197852 4404Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
ae00569a 4405 Int_t ilayer,Int_t idet,
1c97ce2f 4406 Double_t dz,Double_t dy,
23197852 4407 Bool_t noClusters) const {
6518a6c5 4408 //-----------------------------------------------------------------
4409 // This method is used to decide whether to allow a prolongation
ae00569a 4410 // without clusters, because there is a dead zone in the road.
6518a6c5 4411 // In this case the return value is > 0:
4412 // return 1: dead zone at z=0,+-7cm in SPD
bf1cd124 4413 // This method assumes that fSPDdetzcentre is ordered from -z to +z
23197852 4414 // return 2: all road is "bad" (dead or noisy) from the OCDB
f8720bda 4415 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4416 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
6518a6c5 4417 //-----------------------------------------------------------------
4418
4419 // check dead zones at z=0,+-7cm in the SPD
4420 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4421 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4422 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4423 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4424 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4425 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4426 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4427 for (Int_t i=0; i<3; i++)
4187a601 4428 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
bf1cd124 4429 AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
4430 if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
4187a601 4431 }
6518a6c5 4432 }
4433
23197852 4434 // check bad zones from OCDB
4435 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
ae00569a 4436
23197852 4437 if (idet<0) return 0;
ae00569a 4438
23197852 4439 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4440
23197852 4441 Int_t detType=-1;
4442 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4443 if (ilayer==0 || ilayer==1) { // ---------- SPD
4444 detType = 0;
4445 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4446 detType = 1;
4447 detSizeFactorX *= 2.;
4448 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4449 detType = 2;
4450 }
a70ed6ad 4451 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
23197852 4452 if (detType==2) segm->SetLayer(ilayer+1);
4453 Float_t detSizeX = detSizeFactorX*segm->Dx();
4454 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4455
4456 // check if the road overlaps with bad chips
4457 Float_t xloc,zloc;
4187a601 4458 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
1c97ce2f 4459 Float_t zlocmin = zloc-dz;
4460 Float_t zlocmax = zloc+dz;
4461 Float_t xlocmin = xloc-dy;
4462 Float_t xlocmax = xloc+dy;
23197852 4463 Int_t chipsInRoad[100];
4464
4187a601 4465 // check if road goes out of detector
4466 Bool_t touchNeighbourDet=kFALSE;
6262dd3d 4467 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4468 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4469 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4470 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4187a601 4471 AliDebug(2,Form("layer %d det %d zmim zmax %f %f xmin xmax %f %f %f %f",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,detSizeZ,detSizeX));
4472
4473 // check if this detector is bad
4474 if (det.IsBad()) {
4475 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4476 if(!touchNeighbourDet) {
4477 return 2; // all detectors in road are bad
4478 } else {
4479 return 3; // at least one is bad
4480 }
4481 }
4482
23197852 4483 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4187a601 4484 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
23197852 4485 if (!nChipsInRoad) return 0;
4486
4487 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4488 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4489 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4187a601 4490 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
23197852 4491 if (det.IsChipBad(chipsInRoad[iCh])) {
4492 anyBad=kTRUE;
4493 } else {
4494 anyGood=kTRUE;
4495 }
6518a6c5 4496 }
4497
4187a601 4498 if (!anyGood) {
4499 if(!touchNeighbourDet) {
4500 AliDebug(2,"all bad in road");
4501 return 2; // all chips in road are bad
4502 } else {
4503 return 3; // at least a bad chip in road
4504 }
4505 }
23197852 4506
4187a601 4507 if (anyBad) {
4508 AliDebug(2,"at least a bad in road");
4509 return 3; // at least a bad chip in road
4510 }
23197852 4511
4512
4513 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
23197852 4514 || !noClusters) return 0;
4515
4516 // There are no clusters in road: check if there is at least
6a0fdcbd 4517 // a bad SPD pixel or SDD anode or SSD strips on both sides
23197852 4518
4187a601 4519 Int_t idetInITS=idet;
4520 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
23197852 4521
4187a601 4522 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4523 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
f8720bda 4524 return 4;
4187a601 4525 }
4526 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
23197852 4527
6518a6c5 4528 return 0;
4529}
4530//------------------------------------------------------------------------
ae00569a 4531Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
a70ed6ad 4532 const AliITStrackMI *track,
ae00569a 4533 Float_t &xloc,Float_t &zloc) const {
4534 //-----------------------------------------------------------------
4535 // Gives position of track in local module ref. frame
4536 //-----------------------------------------------------------------
4537
4538 xloc=0.;
4539 zloc=0.;
4540
371164ec 4541 if(idet<0) return kTRUE; // track out of z acceptance of layer
ae00569a 4542
4543 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4544
4545 Int_t lad = Int_t(idet/ndet) + 1;
4a66240a 4546
ae00569a 4547 Int_t det = idet - (lad-1)*ndet + 1;
4548
4549 Double_t xyzGlob[3],xyzLoc[3];
4550
1c97ce2f 4551 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4552 // take into account the misalignment: xyz at real detector plane
d1181f10 4553 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
ae00569a 4554
d1181f10 4555 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
ae00569a 4556
4557 xloc = (Float_t)xyzLoc[0];
4558 zloc = (Float_t)xyzLoc[2];
4559
4560 return kTRUE;
4561}
4562//------------------------------------------------------------------------
879cdb02 4563//------------------------------------------------------------------------
a70ed6ad 4564Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
0e91092f 4565//
4566// Method to be optimized further:
4567// Aim: decide whether a track can be used for PlaneEff evaluation
4568// the decision is taken based on the track quality at the layer under study
4569// no information on the clusters on this layer has to be used
4570// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4571// the cut is done on number of sigmas from the boundaries
4572//
4573// Input: Actual track, layer [0,5] under study
4574// Output: none
4575// Return: kTRUE if this is a good track
7167ae53 4576//
4577// it will apply a pre-selection to obtain good quality tracks.
4578// Here also you will have the possibility to put a control on the
4579// impact point of the track on the basic block, in order to exclude border regions
4580// this will be done by calling a proper method of the AliITSPlaneEff class.
4581//
4582// input: AliITStrackMI* track, ilayer= layer number [0,5]
0e91092f 4583// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
0ed58a47 4584//
4585 Int_t index[AliITSgeomTGeo::kNLayers];
4586 Int_t k;
4587 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4588 //
4589 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4590 index[k]=clusters[k];
4591 }
4592
0e91092f 4593 if(!fPlaneEff)
a31a139f 4594 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
8a32c4b5 4595 AliITSlayer &layer=fgLayers[ilayer];
4596 Double_t r=layer.GetR();
8a32c4b5 4597 AliITStrackMI tmp(*track);
4598
0ed58a47 4599// require a minimal number of cluster in other layers and eventually clusters in closest layers
061c42a0 4600 Int_t ncl_out=0; Int_t ncl_in=0;
4601 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
879cdb02 4602 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
0ed58a47 4603 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4604 // if (tmp.GetClIndex(lay)>=0) ncl_out++;
4605if(index[lay]>=0)ncl_out++;
0ed58a47 4606 }
061c42a0 4607 for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
4608 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4609 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
879cdb02 4610 if (index[lay]>=0) ncl_in++;
061c42a0 4611 }
63cce7b6 4612 Int_t ncl=ncl_out+ncl_in;
0ed58a47 4613 Bool_t nextout = kFALSE;
4614 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
9fd412a8 4615 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
0ed58a47 4616 Bool_t nextin = kFALSE;
4617 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4618 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
061c42a0 4619 // maximum number of missing clusters allowed in outermost layers
4620 if(ncl_out<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
4621 return kFALSE;
4622 // maximum number of missing clusters allowed (both in innermost and in outermost layers)
4623 if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
0ed58a47 4624 return kFALSE;
4625 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4626 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4627 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4628 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4629
8a32c4b5 4630// detector number
4631 Double_t phi,z;
4632 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4633 Int_t idet=layer.FindDetectorIndex(phi,z);
4634 if(idet<0) { AliInfo(Form("cannot find detector"));
4635 return kFALSE;}
4636
4637 // here check if it has good Chi Square.
4638
4639 //propagate to the intersection with the detector plane
4640 const AliITSdetector &det=layer.GetDetector(idet);
4641 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4642
4643 Float_t locx; //
4644 Float_t locz; //
0e91092f 4645 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
8a32c4b5 4646 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4647 if(key>fPlaneEff->Nblock()) return kFALSE;
4648 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4649 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
8a32c4b5 4650 //***************
0e91092f 4651 // DEFINITION OF SEARCH ROAD FOR accepting a track
8a32c4b5 4652 //
061c42a0 4653 Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
4654 Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
0e91092f 4655 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4656 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
879cdb02 4657 // done for RecPoints
8a32c4b5 4658
1c97ce2f 4659 // exclude tracks at boundary between detectors
0e91092f 4660 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
8a32c4b5 4661 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
a31a139f 4662 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
0e91092f 4663 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4664 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
0e91092f 4665 if ( (locx-dx < blockXmn+boundaryWidth) ||
4666 (locx+dx > blockXmx-boundaryWidth) ||
4667 (locz-dz < blockZmn+boundaryWidth) ||
4668 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
8a32c4b5 4669 return kTRUE;
7167ae53 4670}
4671//------------------------------------------------------------------------
a70ed6ad 4672void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
7167ae53 4673//
4674// This Method has to be optimized! For the time-being it uses the same criteria
4675// as those used in the search of extra clusters for overlapping modules.
4676//
4677// Method Purpose: estabilish whether a track has produced a recpoint or not
4678// in the layer under study (For Plane efficiency)
4679//
4680// inputs: AliITStrackMI* track (pointer to a usable track)
4681// outputs: none
4682// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4683// traversed by this very track. In details:
4684// - if a cluster can be associated to the track then call
4685// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4686// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4687//
a31a139f 4688 if(!fPlaneEff)
4689 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
7167ae53 4690 AliITSlayer &layer=fgLayers[ilayer];
4691 Double_t r=layer.GetR();
7167ae53 4692 AliITStrackMI tmp(*track);
4693
4694// detector number
4695 Double_t phi,z;
4696 if (!tmp.GetPhiZat(r,phi,z)) return;
4697 Int_t idet=layer.FindDetectorIndex(phi,z);
4698
8a32c4b5 4699 if(idet<0) { AliInfo(Form("cannot find detector"));
4700 return;}
7167ae53 4701
7167ae53 4702
0e91092f 4703//propagate to the intersection with the detector plane
7167ae53 4704 const AliITSdetector &det=layer.GetDetector(idet);
4705 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
8a32c4b5 4706
1c97ce2f 4707
0e91092f 4708//***************
4709// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4710//
4711 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4712 TMath::Sqrt(tmp.GetSigmaZ2() +
4713 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4714 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4715 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4716 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4717 TMath::Sqrt(tmp.GetSigmaY2() +
4718 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4719 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4720 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4721
4722// road in global (rphi,z) [i.e. in tracking ref. system]
4723 Double_t zmin = tmp.GetZ() - dz;
4724 Double_t zmax = tmp.GetZ() + dz;
4725 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4726 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4727
4728// select clusters in road
7167ae53 4729 layer.SelectClusters(zmin,zmax,ymin,ymax);
4730
0e91092f 4731// Define criteria for track-cluster association
7167ae53 4732 Double_t msz = tmp.GetSigmaZ2() +
4733 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4734 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4735 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4736 Double_t msy = tmp.GetSigmaY2() +
4737 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4738 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4739 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
8a32c4b5 4740 if (tmp.GetConstrain()) {
7167ae53 4741 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4742 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
8a32c4b5 4743 } else {
4744 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4745 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4746 }
7167ae53 4747 msz = 1./msz; // 1/RoadZ^2
4748 msy = 1./msy; // 1/RoadY^2
0e91092f 4749//
7167ae53 4750
4751 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4752 Int_t idetc=-1;
8a32c4b5 4753 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4754 //Double_t tolerance=0.2;
4755 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
7167ae53 4756 idetc = cl->GetDetectorIndex();
4757 if(idet!=idetc) continue;
4758 //Int_t ilay = cl->GetLayer();
4759
4760 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4761 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4762
4763 Double_t chi2=tmp.GetPredictedChi2(cl);
8a32c4b5 4764 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4765 }*/
4766 Float_t locx; //
4767 Float_t locz; //
0e91092f 4768 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
7167ae53 4769//
4770 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4771 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4772 if(key>fPlaneEff->Nblock()) return;
4773 Bool_t found=kFALSE;
8a32c4b5 4774 //if (ci>=0) {
1cc5cedc 4775 Double_t chi2;
8a32c4b5 4776 while ((cl=layer.GetNextCluster(clidx))!=0) {
4777 idetc = cl->GetDetectorIndex();
4778 if(idet!=idetc) continue;
4779 // here real control to see whether the cluster can be associated to the track.
4780 // cluster not associated to track
4781 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4782 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4783 // calculate track-clusters chi2
1cc5cedc 4784 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4785 // in particular, the error associated to the cluster
8a32c4b5 4786 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4787 // chi2 cut
4788 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
7167ae53 4789 found=kTRUE;
8a32c4b5 4790 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
7167ae53 4791 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4792 // track->SetExtraModule(ilayer,idetExtra);
4793 }
4794 if(!fPlaneEff->UpDatePlaneEff(found,key))
8a32c4b5 4795 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
5fbd4fd6 4796 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
1cc5cedc 4797 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4798 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4799 Int_t cltype[2]={-999,-999};
879cdb02 4800 // and the module
4801
4802Float_t AngleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
0e91092f 4803
4804 tr[0]=locx;
4805 tr[1]=locz;
4806 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4807 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4808
3ebe30ad 4809 if (found){
4810 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4811 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4812 cltype[0]=layer.GetCluster(ci)->GetNy();
4813 cltype[1]=layer.GetCluster(ci)->GetNz();
1cc5cedc 4814
4815 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4816 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4817 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4818 // It is computed properly by calling the method
4819 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4820 // T
4821 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4822 //if (tmp.PropagateTo(x,0.,0.)) {
4823 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4824 AliCluster c(*layer.GetCluster(ci));
4825 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4826 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
1cc5cedc 4827 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
0e91092f 4828 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4829 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
1cc5cedc 4830 //}
3ebe30ad 4831 }
879cdb02 4832 // Compute the angles between the track and the module
4833 // compute the angle "in phi direction", i.e. the angle in the transverse plane
4834 // between the normal to the module and the projection (in the transverse plane) of the
4835 // track trajectory
4836 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
4837 Float_t tgl = tmp.GetTgl();
4838 Float_t phitr = tmp.GetSnp();
4839 phitr = TMath::ASin(phitr);
4840 Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
4841
4842 Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
4843 Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
4844 Double_t alpha =0.;
4845 alpha = tmp.GetAlpha();
4846 Double_t phiglob = alpha+phitr;
4847 Double_t p[3];
4848 p[0] = TMath::Cos(phiglob);
4849 p[1] = TMath::Sin(phiglob);
4850 p[2] = tgl;
4851 TVector3 pvec(p[0],p[1],p[2]);
4852 TVector3 normvec(rot[1],rot[4],rot[7]);
4853 Double_t angle = pvec.Angle(normvec);
4854
4855 if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
4856 angle *= 180./TMath::Pi();
4857
4858 //Trasverse Plane
4859 TVector3 pt(p[0],p[1],0);
4860 TVector3 normt(rot[1],rot[4],0);
4861 Double_t anglet = pt.Angle(normt);
4862
4863 Double_t phiPt = TMath::ATan2(p[1],p[0]);
4864 if(phiPt<0)phiPt+=2.*TMath::Pi();
4865 Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
4866 if(phiNorm<0) phiNorm+=2.*TMath::Pi();
4867 if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
4868 if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
4869 if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
4870 anglet *= 180./TMath::Pi();
4871
4872 AngleModTrack[2]=(Float_t) angle;
4873 AngleModTrack[0]=(Float_t) anglet;
4874 // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
4875 AngleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
4876 AngleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
4877 AngleModTrack[1]*=180./TMath::Pi(); // in degree
4878
4879 fPlaneEff->FillHistos(key,found,tr,clu,cltype,AngleModTrack);
5fbd4fd6 4880 }
7167ae53 4881return;
4882}