1 /**************************************************************************
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 //-------------------------------------------------------------------------
18 // Implementation of the ITS tracker class
19 // It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
20 // and fills with them the ESD
21 // Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
22 // Current support and development:
23 // Andrea Dainese, andrea.dainese@lnl.infn.it
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
27 //-------------------------------------------------------------------------
31 #include <TDatabasePDG.h>
34 #include <TTreeStream.h>
38 #include "AliITSPlaneEff.h"
39 #include "AliITSCalibrationSPD.h"
40 #include "AliITSCalibrationSDD.h"
41 #include "AliITSCalibrationSSD.h"
42 #include "AliCDBEntry.h"
43 #include "AliCDBManager.h"
44 #include "AliAlignObj.h"
45 #include "AliTrackPointArray.h"
46 #include "AliESDVertex.h"
47 #include "AliESDEvent.h"
48 #include "AliESDtrack.h"
51 #include "AliITSChannelStatus.h"
52 #include "AliITSDetTypeRec.h"
53 #include "AliITSRecPoint.h"
54 #include "AliITSgeomTGeo.h"
55 #include "AliITSReconstructor.h"
56 #include "AliITSClusterParam.h"
57 #include "AliITSsegmentation.h"
58 #include "AliITSCalibration.h"
59 #include "AliITSPlaneEffSPD.h"
60 #include "AliITSPlaneEffSDD.h"
61 #include "AliITSPlaneEffSSD.h"
62 #include "AliITSV0Finder.h"
63 #include "AliITStrackerMI.h"
65 ClassImp(AliITStrackerMI)
67 AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
69 AliITStrackerMI::AliITStrackerMI():AliTracker(),
79 fLastLayerToTrackTo(0),
82 fTrackingPhase("Default"),
88 fxTimesRhoPipeTrks(0),
89 fxOverX0ShieldTrks(0),
90 fxTimesRhoShieldTrks(0),
92 fxTimesRhoLayerTrks(0),
99 for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
100 for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
101 for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
103 //------------------------------------------------------------------------
104 AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
105 fI(AliITSgeomTGeo::GetNLayers()),
114 fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
117 fTrackingPhase("Default"),
123 fxTimesRhoPipeTrks(0),
124 fxOverX0ShieldTrks(0),
125 fxTimesRhoShieldTrks(0),
126 fxOverX0LayerTrks(0),
127 fxTimesRhoLayerTrks(0),
129 fITSChannelStatus(0),
132 //--------------------------------------------------------------------
133 //This is the AliITStrackerMI constructor
134 //--------------------------------------------------------------------
136 AliWarning("\"geom\" is actually a dummy argument !");
142 for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
143 Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
144 Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
146 Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
147 AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
148 Double_t poff=TMath::ATan2(y,x);
150 Double_t r=TMath::Sqrt(x*x + y*y);
152 AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
153 r += TMath::Sqrt(x*x + y*y);
154 AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
155 r += TMath::Sqrt(x*x + y*y);
156 AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
157 r += TMath::Sqrt(x*x + y*y);
160 new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
162 for (Int_t j=1; j<nlad+1; j++) {
163 for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
164 TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
165 const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
167 Double_t txyz[3]={0.};
168 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
169 m.LocalToMaster(txyz,xyz);
170 r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
171 Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
173 if (phi<0) phi+=TMath::TwoPi();
174 else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
176 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
177 new(&det) AliITSdetector(r,phi);
178 // compute the real radius (with misalignment)
179 TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
181 xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
182 mmisal.LocalToMaster(txyz,xyz);
183 Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
184 det.SetRmisal(rmisal);
186 } // end loop on detectors
187 } // end loop on ladders
188 } // end loop on layers
191 fI=AliITSgeomTGeo::GetNLayers();
194 fConstraint[0]=1; fConstraint[1]=0;
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);
204 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
205 fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
206 for (Int_t i=0;i<100000;i++){
207 fBestTrackIndex[i]=0;
210 // store positions of centre of SPD modules (in z)
212 AliITSgeomTGeo::GetTranslation(1,1,1,tr);
213 fSPDdetzcentre[0] = tr[2];
214 AliITSgeomTGeo::GetTranslation(1,1,2,tr);
215 fSPDdetzcentre[1] = tr[2];
216 AliITSgeomTGeo::GetTranslation(1,1,3,tr);
217 fSPDdetzcentre[2] = tr[2];
218 AliITSgeomTGeo::GetTranslation(1,1,4,tr);
219 fSPDdetzcentre[3] = tr[2];
221 fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
222 if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
223 AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
227 for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
228 for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
230 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
232 // only for plane efficiency evaluation
233 if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
234 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
235 Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
236 if(!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)==1)
237 AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
238 if (iplane<2) fPlaneEff = new AliITSPlaneEffSPD();
239 else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
240 else fPlaneEff = new AliITSPlaneEffSSD();
241 if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
242 if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
243 if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
246 //------------------------------------------------------------------------
247 AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
249 fBestTrack(tracker.fBestTrack),
250 fTrackToFollow(tracker.fTrackToFollow),
251 fTrackHypothesys(tracker.fTrackHypothesys),
252 fBestHypothesys(tracker.fBestHypothesys),
253 fOriginal(tracker.fOriginal),
254 fCurrentEsdTrack(tracker.fCurrentEsdTrack),
255 fPass(tracker.fPass),
256 fAfterV0(tracker.fAfterV0),
257 fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
258 fCoefficients(tracker.fCoefficients),
260 fTrackingPhase(tracker.fTrackingPhase),
261 fUseTGeo(tracker.fUseTGeo),
262 fNtracks(tracker.fNtracks),
263 fxOverX0Pipe(tracker.fxOverX0Pipe),
264 fxTimesRhoPipe(tracker.fxTimesRhoPipe),
266 fxTimesRhoPipeTrks(0),
267 fxOverX0ShieldTrks(0),
268 fxTimesRhoShieldTrks(0),
269 fxOverX0LayerTrks(0),
270 fxTimesRhoLayerTrks(0),
271 fDebugStreamer(tracker.fDebugStreamer),
272 fITSChannelStatus(tracker.fITSChannelStatus),
273 fkDetTypeRec(tracker.fkDetTypeRec),
274 fPlaneEff(tracker.fPlaneEff) {
278 fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
281 fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
282 fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
285 fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
286 fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
289 //------------------------------------------------------------------------
290 AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
291 //Assignment operator
292 this->~AliITStrackerMI();
293 new(this) AliITStrackerMI(tracker);
296 //------------------------------------------------------------------------
297 AliITStrackerMI::~AliITStrackerMI()
302 if (fCoefficients) delete [] fCoefficients;
303 DeleteTrksMaterialLUT();
304 if (fDebugStreamer) {
305 //fDebugStreamer->Close();
306 delete fDebugStreamer;
308 if(fITSChannelStatus) delete fITSChannelStatus;
309 if(fPlaneEff) delete fPlaneEff;
311 //------------------------------------------------------------------------
312 void AliITStrackerMI::SetLayersNotToSkip(const Int_t *l) {
313 //--------------------------------------------------------------------
314 //This function set masks of the layers which must be not skipped
315 //--------------------------------------------------------------------
316 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
318 //------------------------------------------------------------------------
319 void AliITStrackerMI::ReadBadFromDetTypeRec() {
320 //--------------------------------------------------------------------
321 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
323 //--------------------------------------------------------------------
325 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
327 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
329 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
332 if(fITSChannelStatus) delete fITSChannelStatus;
333 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
335 // ITS detectors and chips
336 Int_t i=0,j=0,k=0,ndet=0;
337 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
338 Int_t nBadDetsPerLayer=0;
339 ndet=AliITSgeomTGeo::GetNDetectors(i);
340 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
341 for (k=1; k<ndet+1; k++) {
342 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
343 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
344 if(det.IsBad()) {nBadDetsPerLayer++;}
345 } // end loop on detectors
346 } // end loop on ladders
347 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
348 } // end loop on layers
352 //------------------------------------------------------------------------
353 Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
354 //--------------------------------------------------------------------
355 //This function loads ITS clusters
356 //--------------------------------------------------------------------
357 TBranch *branch=cTree->GetBranch("ITSRecPoints");
359 Error("LoadClusters"," can't get the branch !\n");
363 static TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
364 branch->SetAddress(&clusters);
366 Int_t i=0,j=0,ndet=0;
368 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
369 ndet=fgLayers[i].GetNdetectors();
370 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
371 for (; j<jmax; j++) {
372 if (!cTree->GetEvent(j)) continue;
373 Int_t ncl=clusters->GetEntriesFast();
374 SignDeltas(clusters,GetZ());
377 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
378 detector=c->GetDetectorIndex();
380 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
382 fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
385 // add dead zone "virtual" cluster in SPD, if there is a cluster within
386 // zwindow cm from the dead zone
387 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
388 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
389 Int_t lab[4] = {0,0,0,detector};
390 Int_t info[3] = {0,0,i};
391 Float_t q = 0.; // this identifies virtual clusters
392 Float_t hit[5] = {xdead,
394 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
395 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
397 Bool_t local = kTRUE;
398 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
399 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
400 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
401 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
402 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
403 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
404 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
405 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
406 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
407 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
408 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
409 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
410 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
411 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
412 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
413 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
414 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
415 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
416 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
418 } // "virtual" clusters in SPD
422 fgLayers[i].ResetRoad(); //road defined by the cluster density
423 fgLayers[i].SortClusters();
430 //------------------------------------------------------------------------
431 void AliITStrackerMI::UnloadClusters() {
432 //--------------------------------------------------------------------
433 //This function unloads ITS clusters
434 //--------------------------------------------------------------------
435 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
437 //------------------------------------------------------------------------
438 void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
439 //--------------------------------------------------------------------
440 // Publishes all pointers to clusters known to the tracker into the
441 // passed object array.
442 // The ownership is not transfered - the caller is not expected to delete
444 //--------------------------------------------------------------------
446 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
447 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
448 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
455 //------------------------------------------------------------------------
456 Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
457 //--------------------------------------------------------------------
458 // Correction for the material between the TPC and the ITS
459 //--------------------------------------------------------------------
460 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
463 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
464 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
466 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
467 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
469 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
475 //------------------------------------------------------------------------
476 Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
477 //--------------------------------------------------------------------
478 // This functions reconstructs ITS tracks
479 // The clusters must be already loaded !
480 //--------------------------------------------------------------------
483 fTrackingPhase="Clusters2Tracks";
485 TObjArray itsTracks(15000);
487 fEsd = event; // store pointer to the esd
489 // temporary (for cosmics)
490 if(event->GetVertex()) {
491 TString title = event->GetVertex()->GetTitle();
492 if(title.Contains("cosmics")) {
493 Double_t xyz[3]={GetX(),GetY(),GetZ()};
494 Double_t exyz[3]={0.1,0.1,0.1};
500 {/* Read ESD tracks */
501 Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
502 Int_t nentr=event->GetNumberOfTracks();
503 Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
505 AliESDtrack *esd=event->GetTrack(nentr);
506 // ---- for debugging:
507 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
509 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
510 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
511 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
512 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
515 t=new AliITStrackMI(*esd);
516 } catch (const Char_t *msg) {
517 //Warning("Clusters2Tracks",msg);
521 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
522 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
525 // look at the ESD mass hypothesys !
526 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
528 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
530 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
531 //track - can be V0 according to TPC
533 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
537 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
541 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
545 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
550 t->SetReconstructed(kFALSE);
551 itsTracks.AddLast(t);
552 fOriginal.AddLast(t);
554 } /* End Read ESD tracks */
558 Int_t nentr=itsTracks.GetEntriesFast();
559 fTrackHypothesys.Expand(nentr);
560 fBestHypothesys.Expand(nentr);
561 MakeCoefficients(nentr);
562 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
564 // THE TWO TRACKING PASSES
565 for (fPass=0; fPass<2; fPass++) {
566 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
567 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
568 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
569 if (t==0) continue; //this track has been already tracked
570 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
571 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
572 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
573 if (fConstraint[fPass]) {
574 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
575 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
578 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
579 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
581 ResetTrackToFollow(*t);
584 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
587 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
589 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
590 if (!besttrack) continue;
591 besttrack->SetLabel(tpcLabel);
592 // besttrack->CookdEdx();
594 besttrack->SetFakeRatio(1.);
595 CookLabel(besttrack,0.); //For comparison only
596 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
598 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
600 t->SetReconstructed(kTRUE);
602 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
604 GetBestHypothesysMIP(itsTracks);
605 } // end loop on the two tracking passes
607 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
608 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
613 Int_t entries = fTrackHypothesys.GetEntriesFast();
614 for (Int_t ientry=0; ientry<entries; ientry++) {
615 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
616 if (array) array->Delete();
617 delete fTrackHypothesys.RemoveAt(ientry);
620 fTrackHypothesys.Delete();
621 fBestHypothesys.Delete();
623 delete [] fCoefficients;
625 DeleteTrksMaterialLUT();
627 Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
629 fTrackingPhase="Default";
633 //------------------------------------------------------------------------
634 Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
635 //--------------------------------------------------------------------
636 // This functions propagates reconstructed ITS tracks back
637 // The clusters must be loaded !
638 //--------------------------------------------------------------------
639 fTrackingPhase="PropagateBack";
640 Int_t nentr=event->GetNumberOfTracks();
641 Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
644 for (Int_t i=0; i<nentr; i++) {
645 AliESDtrack *esd=event->GetTrack(i);
647 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
648 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
652 t=new AliITStrackMI(*esd);
653 } catch (const Char_t *msg) {
654 //Warning("PropagateBack",msg);
658 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
660 ResetTrackToFollow(*t);
662 // propagate to vertex [SR, GSI 17.02.2003]
663 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
664 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
665 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
666 fTrackToFollow.StartTimeIntegral();
667 // from vertex to outside pipe
668 CorrectForPipeMaterial(&fTrackToFollow,"outward");
670 // Start time integral and add distance from current position to vertex
671 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
672 fTrackToFollow.GetXYZ(xyzTrk);
674 for (Int_t icoord=0; icoord<3; icoord++) {
675 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
678 fTrackToFollow.StartTimeIntegral();
679 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
681 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
682 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
683 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
687 fTrackToFollow.SetLabel(t->GetLabel());
688 //fTrackToFollow.CookdEdx();
689 CookLabel(&fTrackToFollow,0.); //For comparison only
690 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
691 //UseClusters(&fTrackToFollow);
697 Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
699 fTrackingPhase="Default";
703 //------------------------------------------------------------------------
704 Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
705 //--------------------------------------------------------------------
706 // This functions refits ITS tracks using the
707 // "inward propagated" TPC tracks
708 // The clusters must be loaded !
709 //--------------------------------------------------------------------
710 fTrackingPhase="RefitInward";
712 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
714 Int_t nentr=event->GetNumberOfTracks();
715 Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
718 for (Int_t i=0; i<nentr; i++) {
719 AliESDtrack *esd=event->GetTrack(i);
721 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
722 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
723 if (esd->GetStatus()&AliESDtrack::kTPCout)
724 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
728 t=new AliITStrackMI(*esd);
729 } catch (const Char_t *msg) {
730 //Warning("RefitInward",msg);
734 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
735 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
740 ResetTrackToFollow(*t);
741 fTrackToFollow.ResetClusters();
743 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
744 fTrackToFollow.ResetCovariance(10.);
747 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
748 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
750 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
751 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
752 AliDebug(2," refit OK");
753 fTrackToFollow.SetLabel(t->GetLabel());
754 // fTrackToFollow.CookdEdx();
755 CookdEdx(&fTrackToFollow);
757 CookLabel(&fTrackToFollow,0.0); //For comparison only
760 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
761 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
762 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
763 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
764 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
765 Double_t r[3]={0.,0.,0.};
767 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
774 Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
776 fTrackingPhase="Default";
780 //------------------------------------------------------------------------
781 AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
782 //--------------------------------------------------------------------
783 // Return pointer to a given cluster
784 //--------------------------------------------------------------------
785 Int_t l=(index & 0xf0000000) >> 28;
786 Int_t c=(index & 0x0fffffff) >> 00;
787 return fgLayers[l].GetCluster(c);
789 //------------------------------------------------------------------------
790 Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
791 //--------------------------------------------------------------------
792 // Get track space point with index i
793 //--------------------------------------------------------------------
795 Int_t l=(index & 0xf0000000) >> 28;
796 Int_t c=(index & 0x0fffffff) >> 00;
797 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
798 Int_t idet = cl->GetDetectorIndex();
802 cl->GetGlobalXYZ(xyz);
803 cl->GetGlobalCov(cov);
805 p.SetCharge(cl->GetQ());
806 p.SetDriftTime(cl->GetDriftTime());
807 p.SetChargeRatio(cl->GetChargeRatio());
808 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
811 iLayer = AliGeomManager::kSPD1;
814 iLayer = AliGeomManager::kSPD2;
817 iLayer = AliGeomManager::kSDD1;
820 iLayer = AliGeomManager::kSDD2;
823 iLayer = AliGeomManager::kSSD1;
826 iLayer = AliGeomManager::kSSD2;
829 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
832 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
833 p.SetVolumeID((UShort_t)volid);
836 //------------------------------------------------------------------------
837 Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
838 AliTrackPoint& p, const AliESDtrack *t) {
839 //--------------------------------------------------------------------
840 // Get track space point with index i
841 // (assign error estimated during the tracking)
842 //--------------------------------------------------------------------
844 Int_t l=(index & 0xf0000000) >> 28;
845 Int_t c=(index & 0x0fffffff) >> 00;
846 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
847 Int_t idet = cl->GetDetectorIndex();
849 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
851 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
853 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
854 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
855 Double_t alpha = t->GetAlpha();
856 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
857 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
858 phi += alpha-det.GetPhi();
859 Float_t tgphi = TMath::Tan(phi);
861 Float_t tgl = t->GetTgl(); // tgl about const along track
862 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
864 Float_t errtrky,errtrkz,covyz;
865 Bool_t addMisalErr=kFALSE;
866 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
870 cl->GetGlobalXYZ(xyz);
871 // cl->GetGlobalCov(cov);
872 Float_t pos[3] = {0.,0.,0.};
873 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
874 tmpcl.GetGlobalCov(cov);
877 p.SetCharge(cl->GetQ());
878 p.SetDriftTime(cl->GetDriftTime());
879 p.SetChargeRatio(cl->GetChargeRatio());
881 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
884 iLayer = AliGeomManager::kSPD1;
887 iLayer = AliGeomManager::kSPD2;
890 iLayer = AliGeomManager::kSDD1;
893 iLayer = AliGeomManager::kSDD2;
896 iLayer = AliGeomManager::kSSD1;
899 iLayer = AliGeomManager::kSSD2;
902 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
905 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
907 p.SetVolumeID((UShort_t)volid);
910 //------------------------------------------------------------------------
911 void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
913 //--------------------------------------------------------------------
914 // Follow prolongation tree
915 //--------------------------------------------------------------------
917 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
918 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
921 AliESDtrack * esd = otrack->GetESDtrack();
922 if (esd->GetV0Index(0)>0) {
923 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
924 // mapping of ESD track is different as ITS track in Containers
925 // Need something more stable
926 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
927 for (Int_t i=0;i<3;i++){
928 Int_t index = esd->GetV0Index(i);
930 AliESDv0 * vertex = fEsd->GetV0(index);
931 if (vertex->GetStatus()<0) continue; // rejected V0
933 if (esd->GetSign()>0) {
934 vertex->SetIndex(0,esdindex);
936 vertex->SetIndex(1,esdindex);
940 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
942 bestarray = new TObjArray(5);
943 fBestHypothesys.AddAt(bestarray,esdindex);
947 //setup tree of the prolongations
949 static AliITStrackMI tracks[7][100];
950 AliITStrackMI *currenttrack;
951 static AliITStrackMI currenttrack1;
952 static AliITStrackMI currenttrack2;
953 static AliITStrackMI backuptrack;
955 Int_t nindexes[7][100];
956 Float_t normalizedchi2[100];
957 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
958 otrack->SetNSkipped(0);
959 new (&(tracks[6][0])) AliITStrackMI(*otrack);
961 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
962 Int_t modstatus = 1; // found
966 // follow prolongations
967 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
968 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
971 AliITSlayer &layer=fgLayers[ilayer];
972 Double_t r = layer.GetR();
978 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
980 if (ntracks[ilayer]>=100) break;
981 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
982 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
983 if (ntracks[ilayer]>15+ilayer){
984 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
985 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
988 new(¤ttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
990 // material between SSD and SDD, SDD and SPD
992 if(!CorrectForShieldMaterial(¤ttrack1,"SDD","inward")) continue;
994 if(!CorrectForShieldMaterial(¤ttrack1,"SPD","inward")) continue;
998 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
999 Int_t idet=layer.FindDetectorIndex(phi,z);
1001 Double_t trackGlobXYZ1[3];
1002 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
1004 // Get the budget to the primary vertex for the current track being prolonged
1005 Double_t budgetToPrimVertex = GetEffectiveThickness();
1007 // check if we allow a prolongation without point
1008 Int_t skip = CheckSkipLayer(¤ttrack1,ilayer,idet);
1010 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1011 // propagate to the layer radius
1012 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
1013 if(!vtrack->Propagate(xToGo)) continue;
1014 // apply correction for material of the current layer
1015 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1016 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
1017 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
1018 vtrack->SetClIndex(ilayer,-1);
1019 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
1020 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1021 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1023 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1028 // track outside layer acceptance in z
1029 if (idet<0) continue;
1031 //propagate to the intersection with the detector plane
1032 const AliITSdetector &det=layer.GetDetector(idet);
1033 new(¤ttrack2) AliITStrackMI(currenttrack1);
1034 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
1035 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
1036 currenttrack1.SetDetectorIndex(idet);
1037 currenttrack2.SetDetectorIndex(idet);
1038 if(!LocalModuleCoord(ilayer,idet,¤ttrack1,xloc,zloc)) continue; // local module coords
1041 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
1043 // road in global (rphi,z) [i.e. in tracking ref. system]
1044 Double_t zmin,zmax,ymin,ymax;
1045 if (!ComputeRoad(¤ttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
1047 // select clusters in road
1048 layer.SelectClusters(zmin,zmax,ymin,ymax);
1049 //********************
1051 // Define criteria for track-cluster association
1052 Double_t msz = currenttrack1.GetSigmaZ2() +
1053 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1054 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1055 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1056 Double_t msy = currenttrack1.GetSigmaY2() +
1057 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1058 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1059 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1061 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1062 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1064 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1065 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1067 msz = 1./msz; // 1/RoadZ^2
1068 msy = 1./msy; // 1/RoadY^2
1072 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
1074 const AliITSRecPoint *cl=0;
1076 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
1077 Bool_t deadzoneSPD=kFALSE;
1078 currenttrack = ¤ttrack1;
1080 // check if the road contains a dead zone
1081 Bool_t noClusters = kFALSE;
1082 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1083 if (noClusters) AliDebug(2,"no clusters in road");
1084 Double_t dz=0.5*(zmax-zmin);
1085 Double_t dy=0.5*(ymax-ymin);
1086 Int_t dead = CheckDeadZone(¤ttrack1,ilayer,idet,dz,dy,noClusters);
1087 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
1088 // create a prolongation without clusters (check also if there are no clusters in the road)
1091 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
1092 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1093 updatetrack->SetClIndex(ilayer,-1);
1095 modstatus = 5; // no cls in road
1096 } else if (dead==1) {
1097 modstatus = 7; // holes in z in SPD
1098 } else if (dead==2 || dead==3 || dead==4) {
1099 modstatus = 2; // dead from OCDB
1101 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1102 // apply correction for material of the current layer
1103 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1104 if (constrain) { // apply vertex constrain
1105 updatetrack->SetConstrain(constrain);
1106 Bool_t isPrim = kTRUE;
1107 if (ilayer<4) { // check that it's close to the vertex
1108 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1109 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1110 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1111 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1112 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1114 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1116 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1118 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1119 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1121 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1122 updatetrack->SetDeadZoneProbability(ilayer,1.);
1123 } else if (dead==4) { // at least a single dead channel from OCDB
1124 updatetrack->SetDeadZoneProbability(ilayer,0.);
1131 // loop over clusters in the road
1132 while ((cl=layer.GetNextCluster(clidx))!=0) {
1133 if (ntracks[ilayer]>95) break; //space for skipped clusters
1134 Bool_t changedet =kFALSE;
1135 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
1136 Int_t idetc=cl->GetDetectorIndex();
1138 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1139 // take into account misalignment (bring track to real detector plane)
1140 Double_t xTrOrig = currenttrack->GetX();
1141 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
1142 // a first cut on track-cluster distance
1143 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1144 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1145 { // cluster not associated to track
1146 AliDebug(2,"not associated");
1149 // bring track back to ideal detector plane
1150 if (!currenttrack->Propagate(xTrOrig)) continue;
1151 } else { // have to move track to cluster's detector
1152 const AliITSdetector &detc=layer.GetDetector(idetc);
1153 // a first cut on track-cluster distance
1155 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
1156 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1157 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
1158 continue; // cluster not associated to track
1160 new (&backuptrack) AliITStrackMI(currenttrack2);
1162 currenttrack =¤ttrack2;
1163 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
1164 new (currenttrack) AliITStrackMI(backuptrack);
1168 currenttrack->SetDetectorIndex(idetc);
1169 // Get again the budget to the primary vertex
1170 // for the current track being prolonged, if had to change detector
1171 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
1174 // calculate track-clusters chi2
1175 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1177 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
1178 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
1179 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
1180 if (ntracks[ilayer]>=100) continue;
1181 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1182 updatetrack->SetClIndex(ilayer,-1);
1183 if (changedet) new (¤ttrack2) AliITStrackMI(backuptrack);
1185 if (cl->GetQ()!=0) { // real cluster
1186 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1187 AliDebug(2,"update failed");
1190 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
1191 modstatus = 1; // found
1192 } else { // virtual cluster in dead zone
1193 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1194 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1195 modstatus = 7; // holes in z in SPD
1199 Float_t xlocnewdet,zlocnewdet;
1200 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1201 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1204 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1206 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1208 // apply correction for material of the current layer
1209 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1211 if (constrain) { // apply vertex constrain
1212 updatetrack->SetConstrain(constrain);
1213 Bool_t isPrim = kTRUE;
1214 if (ilayer<4) { // check that it's close to the vertex
1215 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1216 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1217 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1218 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1219 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1221 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1222 } //apply vertex constrain
1224 } // create new hypothesis
1226 AliDebug(2,"chi2 too large");
1229 } // loop over possible prolongations
1231 // allow one prolongation without clusters
1232 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
1233 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1234 // apply correction for material of the current layer
1235 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1236 vtrack->SetClIndex(ilayer,-1);
1237 modstatus = 3; // skipped
1238 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1239 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1240 vtrack->IncrementNSkipped();
1244 // allow one prolongation without clusters for tracks with |tgl|>1.1
1245 if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
1246 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1247 // apply correction for material of the current layer
1248 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1249 vtrack->SetClIndex(ilayer,-1);
1250 modstatus = 3; // skipped
1251 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1252 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1253 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
1258 } // loop over tracks in layer ilayer+1
1260 //loop over track candidates for the current layer
1266 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1267 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
1268 if (normalizedchi2[itrack] <
1269 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
1273 if (constrain) { // constrain
1274 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1276 } else { // !constrain
1277 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1282 // sort tracks by increasing normalized chi2
1283 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
1284 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
1285 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
1286 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
1287 } // end loop over layers
1291 // Now select tracks to be kept
1293 Int_t max = constrain ? 20 : 5;
1295 // tracks that reach layer 0 (SPD inner)
1296 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
1297 AliITStrackMI & track= tracks[0][nindexes[0][i]];
1298 if (track.GetNumberOfClusters()<2) continue;
1299 if (!constrain && track.GetNormChi2(0) >
1300 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1303 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1306 // tracks that reach layer 1 (SPD outer)
1307 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
1308 AliITStrackMI & track= tracks[1][nindexes[1][i]];
1309 if (track.GetNumberOfClusters()<4) continue;
1310 if (!constrain && track.GetNormChi2(1) >
1311 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1312 if (constrain) track.IncrementNSkipped();
1314 track.SetD(0,track.GetD(GetX(),GetY()));
1315 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
1316 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1317 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1320 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1323 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
1325 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
1326 AliITStrackMI & track= tracks[2][nindexes[2][i]];
1327 if (track.GetNumberOfClusters()<3) continue;
1328 if (!constrain && track.GetNormChi2(2) >
1329 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1330 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
1332 track.SetD(0,track.GetD(GetX(),GetY()));
1333 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1334 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1335 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1338 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1344 // register best track of each layer - important for V0 finder
1346 for (Int_t ilayer=0;ilayer<5;ilayer++){
1347 if (ntracks[ilayer]==0) continue;
1348 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1349 if (track.GetNumberOfClusters()<1) continue;
1350 CookLabel(&track,0);
1351 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1355 // update TPC V0 information
1357 if (otrack->GetESDtrack()->GetV0Index(0)>0){
1358 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1359 for (Int_t i=0;i<3;i++){
1360 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
1361 if (index==0) break;
1362 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
1363 if (vertex->GetStatus()<0) continue; // rejected V0
1365 if (otrack->GetSign()>0) {
1366 vertex->SetIndex(0,esdindex);
1369 vertex->SetIndex(1,esdindex);
1371 //find nearest layer with track info
1372 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1373 Int_t nearestold = GetNearestLayer(xrp); //I.B.
1374 Int_t nearest = nearestold;
1375 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1376 if (ntracks[nearest]==0){
1381 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1382 if (nearestold<5&&nearest<5){
1383 Bool_t accept = track.GetNormChi2(nearest)<10;
1385 if (track.GetSign()>0) {
1386 vertex->SetParamP(track);
1387 vertex->Update(fprimvertex);
1388 //vertex->SetIndex(0,track.fESDtrack->GetID());
1389 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1391 vertex->SetParamN(track);
1392 vertex->Update(fprimvertex);
1393 //vertex->SetIndex(1,track.fESDtrack->GetID());
1394 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1396 vertex->SetStatus(vertex->GetStatus()+1);
1398 //vertex->SetStatus(-2); // reject V0 - not enough clusters
1405 //------------------------------------------------------------------------
1406 AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1408 //--------------------------------------------------------------------
1411 return fgLayers[layer];
1413 //------------------------------------------------------------------------
1414 AliITStrackerMI::AliITSlayer::AliITSlayer():
1444 //--------------------------------------------------------------------
1445 //default AliITSlayer constructor
1446 //--------------------------------------------------------------------
1447 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1448 fClusterWeight[i]=0;
1449 fClusterTracks[0][i]=-1;
1450 fClusterTracks[1][i]=-1;
1451 fClusterTracks[2][i]=-1;
1452 fClusterTracks[3][i]=-1;
1455 //------------------------------------------------------------------------
1456 AliITStrackerMI::AliITSlayer::
1457 AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1486 //--------------------------------------------------------------------
1487 //main AliITSlayer constructor
1488 //--------------------------------------------------------------------
1489 fDetectors=new AliITSdetector[fNladders*fNdetectors];
1490 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
1492 //------------------------------------------------------------------------
1493 AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1495 fPhiOffset(layer.fPhiOffset),
1496 fNladders(layer.fNladders),
1497 fZOffset(layer.fZOffset),
1498 fNdetectors(layer.fNdetectors),
1499 fDetectors(layer.fDetectors),
1504 fClustersCs(layer.fClustersCs),
1505 fClusterIndexCs(layer.fClusterIndexCs),
1509 fCurrentSlice(layer.fCurrentSlice),
1517 fAccepted(layer.fAccepted),
1519 fMaxSigmaClY(layer.fMaxSigmaClY),
1520 fMaxSigmaClZ(layer.fMaxSigmaClZ),
1521 fNMaxSigmaCl(layer.fNMaxSigmaCl)
1525 //------------------------------------------------------------------------
1526 AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1527 //--------------------------------------------------------------------
1528 // AliITSlayer destructor
1529 //--------------------------------------------------------------------
1530 delete [] fDetectors;
1531 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1532 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1533 fClusterWeight[i]=0;
1534 fClusterTracks[0][i]=-1;
1535 fClusterTracks[1][i]=-1;
1536 fClusterTracks[2][i]=-1;
1537 fClusterTracks[3][i]=-1;
1540 //------------------------------------------------------------------------
1541 void AliITStrackerMI::AliITSlayer::ResetClusters() {
1542 //--------------------------------------------------------------------
1543 // This function removes loaded clusters
1544 //--------------------------------------------------------------------
1545 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1546 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
1547 fClusterWeight[i]=0;
1548 fClusterTracks[0][i]=-1;
1549 fClusterTracks[1][i]=-1;
1550 fClusterTracks[2][i]=-1;
1551 fClusterTracks[3][i]=-1;
1557 //------------------------------------------------------------------------
1558 void AliITStrackerMI::AliITSlayer::ResetWeights() {
1559 //--------------------------------------------------------------------
1560 // This function reset weights of the clusters
1561 //--------------------------------------------------------------------
1562 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1563 fClusterWeight[i]=0;
1564 fClusterTracks[0][i]=-1;
1565 fClusterTracks[1][i]=-1;
1566 fClusterTracks[2][i]=-1;
1567 fClusterTracks[3][i]=-1;
1569 for (Int_t i=0; i<fN;i++) {
1570 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
1571 if (cl&&cl->IsUsed()) cl->Use();
1575 //------------------------------------------------------------------------
1576 void AliITStrackerMI::AliITSlayer::ResetRoad() {
1577 //--------------------------------------------------------------------
1578 // This function calculates the road defined by the cluster density
1579 //--------------------------------------------------------------------
1581 for (Int_t i=0; i<fN; i++) {
1582 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1584 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
1586 //------------------------------------------------------------------------
1587 Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
1588 //--------------------------------------------------------------------
1589 //This function adds a cluster to this layer
1590 //--------------------------------------------------------------------
1591 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
1592 ::Error("InsertCluster","Too many clusters !\n");
1598 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1600 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1601 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1602 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1603 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1604 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1605 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1608 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1609 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1610 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1611 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
1615 //------------------------------------------------------------------------
1616 void AliITStrackerMI::AliITSlayer::SortClusters()
1621 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1622 Float_t *z = new Float_t[fN];
1623 Int_t * index = new Int_t[fN];
1625 fMaxSigmaClY=0.; //AD
1626 fMaxSigmaClZ=0.; //AD
1628 for (Int_t i=0;i<fN;i++){
1629 z[i] = fClusters[i]->GetZ();
1630 // save largest errors in y and z for this layer
1631 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1632 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1634 TMath::Sort(fN,z,index,kFALSE);
1635 for (Int_t i=0;i<fN;i++){
1636 clusters[i] = fClusters[index[i]];
1639 for (Int_t i=0;i<fN;i++){
1640 fClusters[i] = clusters[i];
1641 fZ[i] = fClusters[i]->GetZ();
1642 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1643 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1644 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1654 for (Int_t i=0;i<fN;i++){
1655 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1656 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1657 fClusterIndex[i] = i;
1661 fDy5 = (fYB[1]-fYB[0])/5.;
1662 fDy10 = (fYB[1]-fYB[0])/10.;
1663 fDy20 = (fYB[1]-fYB[0])/20.;
1664 for (Int_t i=0;i<6;i++) fN5[i] =0;
1665 for (Int_t i=0;i<11;i++) fN10[i]=0;
1666 for (Int_t i=0;i<21;i++) fN20[i]=0;
1668 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;}
1669 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;}
1670 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;}
1673 for (Int_t i=0;i<fN;i++)
1674 for (Int_t irot=-1;irot<=1;irot++){
1675 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1677 for (Int_t slice=0; slice<6;slice++){
1678 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1679 fClusters5[slice][fN5[slice]] = fClusters[i];
1680 fY5[slice][fN5[slice]] = curY;
1681 fZ5[slice][fN5[slice]] = fZ[i];
1682 fClusterIndex5[slice][fN5[slice]]=i;
1687 for (Int_t slice=0; slice<11;slice++){
1688 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1689 fClusters10[slice][fN10[slice]] = fClusters[i];
1690 fY10[slice][fN10[slice]] = curY;
1691 fZ10[slice][fN10[slice]] = fZ[i];
1692 fClusterIndex10[slice][fN10[slice]]=i;
1697 for (Int_t slice=0; slice<21;slice++){
1698 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1699 fClusters20[slice][fN20[slice]] = fClusters[i];
1700 fY20[slice][fN20[slice]] = curY;
1701 fZ20[slice][fN20[slice]] = fZ[i];
1702 fClusterIndex20[slice][fN20[slice]]=i;
1709 // consistency check
1711 for (Int_t i=0;i<fN-1;i++){
1717 for (Int_t slice=0;slice<21;slice++)
1718 for (Int_t i=0;i<fN20[slice]-1;i++){
1719 if (fZ20[slice][i]>fZ20[slice][i+1]){
1726 //------------------------------------------------------------------------
1727 Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1728 //--------------------------------------------------------------------
1729 // This function returns the index of the nearest cluster
1730 //--------------------------------------------------------------------
1733 if (fCurrentSlice<0) {
1742 if (ncl==0) return 0;
1743 Int_t b=0, e=ncl-1, m=(b+e)/2;
1744 for (; b<e; m=(b+e)/2) {
1745 // if (z > fClusters[m]->GetZ()) b=m+1;
1746 if (z > zcl[m]) b=m+1;
1751 //------------------------------------------------------------------------
1752 Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
1753 //--------------------------------------------------------------------
1754 // This function computes the rectangular road for this track
1755 //--------------------------------------------------------------------
1758 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1759 // take into account the misalignment: propagate track to misaligned detector plane
1760 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1762 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1763 TMath::Sqrt(track->GetSigmaZ2() +
1764 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1765 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1766 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1767 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1768 TMath::Sqrt(track->GetSigmaY2() +
1769 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1770 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1771 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1773 // track at boundary between detectors, enlarge road
1774 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1775 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1776 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1777 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1778 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1779 Float_t tgl = TMath::Abs(track->GetTgl());
1780 if (tgl > 1.) tgl=1.;
1781 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1782 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1783 Float_t snp = TMath::Abs(track->GetSnp());
1784 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1785 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1788 // add to the road a term (up to 2-3 mm) to deal with misalignments
1789 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1790 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1792 Double_t r = fgLayers[ilayer].GetR();
1793 zmin = track->GetZ() - dz;
1794 zmax = track->GetZ() + dz;
1795 ymin = track->GetY() + r*det.GetPhi() - dy;
1796 ymax = track->GetY() + r*det.GetPhi() + dy;
1798 // bring track back to idead detector plane
1799 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1803 //------------------------------------------------------------------------
1804 void AliITStrackerMI::AliITSlayer::
1805 SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1806 //--------------------------------------------------------------------
1807 // This function sets the "window"
1808 //--------------------------------------------------------------------
1810 Double_t circle=2*TMath::Pi()*fR;
1816 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1817 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1818 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1819 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1820 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1822 Float_t ymiddle = (fYmin+fYmax)*0.5;
1823 if (ymiddle<fYB[0]) {
1824 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1825 } else if (ymiddle>fYB[1]) {
1826 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
1832 fClustersCs = fClusters;
1833 fClusterIndexCs = fClusterIndex;
1839 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1840 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1841 if (slice<0) slice=0;
1842 if (slice>20) slice=20;
1843 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1845 fCurrentSlice=slice;
1846 fClustersCs = fClusters20[fCurrentSlice];
1847 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1848 fYcs = fY20[fCurrentSlice];
1849 fZcs = fZ20[fCurrentSlice];
1850 fNcs = fN20[fCurrentSlice];
1855 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1856 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1857 if (slice<0) slice=0;
1858 if (slice>10) slice=10;
1859 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1861 fCurrentSlice=slice;
1862 fClustersCs = fClusters10[fCurrentSlice];
1863 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1864 fYcs = fY10[fCurrentSlice];
1865 fZcs = fZ10[fCurrentSlice];
1866 fNcs = fN10[fCurrentSlice];
1871 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1872 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1873 if (slice<0) slice=0;
1874 if (slice>5) slice=5;
1875 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
1877 fCurrentSlice=slice;
1878 fClustersCs = fClusters5[fCurrentSlice];
1879 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1880 fYcs = fY5[fCurrentSlice];
1881 fZcs = fZ5[fCurrentSlice];
1882 fNcs = fN5[fCurrentSlice];
1886 fI = FindClusterIndex(fZmin);
1887 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1893 //------------------------------------------------------------------------
1894 Int_t AliITStrackerMI::AliITSlayer::
1895 FindDetectorIndex(Double_t phi, Double_t z) const {
1896 //--------------------------------------------------------------------
1897 //This function finds the detector crossed by the track
1898 //--------------------------------------------------------------------
1900 if (fZOffset<0) // old geometry
1901 dphi = -(phi-fPhiOffset);
1902 else // new geometry
1903 dphi = phi-fPhiOffset;
1906 if (dphi < 0) dphi += 2*TMath::Pi();
1907 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1908 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1909 if (np>=fNladders) np-=fNladders;
1910 if (np<0) np+=fNladders;
1913 Double_t dz=fZOffset-z;
1914 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1915 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
1916 if (nz>=fNdetectors) return -1;
1917 if (nz<0) return -1;
1919 // ad hoc correction for 3rd ladder of SDD inner layer,
1920 // which is reversed (rotated by pi around local y)
1921 // this correction is OK only from AliITSv11Hybrid onwards
1922 if (GetR()>12. && GetR()<20.) { // SDD inner
1923 if(np==2) { // 3rd ladder
1924 nz = (fNdetectors-1) - nz;
1927 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1930 return np*fNdetectors + nz;
1932 //------------------------------------------------------------------------
1933 const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1935 //--------------------------------------------------------------------
1936 // This function returns clusters within the "window"
1937 //--------------------------------------------------------------------
1939 if (fCurrentSlice<0) {
1940 Double_t rpi2 = 2.*fR*TMath::Pi();
1941 for (Int_t i=fI; i<fImax; i++) {
1944 if (fYmax<y) y -= rpi2;
1945 if (fYmin>y) y += rpi2;
1946 if (y<fYmin) continue;
1947 if (y>fYmax) continue;
1949 // skip clusters that are in "extended" road but they
1950 // 3sigma error does not touch the original road
1951 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1952 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1954 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1957 return fClusters[i];
1960 for (Int_t i=fI; i<fImax; i++) {
1961 if (fYcs[i]<fYmin) continue;
1962 if (fYcs[i]>fYmax) continue;
1963 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1964 ci=fClusterIndexCs[i];
1966 return fClustersCs[i];
1971 //------------------------------------------------------------------------
1972 Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1974 //--------------------------------------------------------------------
1975 // This function returns the layer thickness at this point (units X0)
1976 //--------------------------------------------------------------------
1978 x0=AliITSRecoParam::GetX0Air();
1979 if (43<fR&&fR<45) { //SSD2
1982 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1983 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1984 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1985 for (Int_t i=0; i<12; i++) {
1986 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1987 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1991 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1992 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1996 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1997 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2000 if (37<fR&&fR<41) { //SSD1
2003 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2004 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2005 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2006 for (Int_t i=0; i<11; i++) {
2007 if (TMath::Abs(z-3.9*i)<0.15) {
2008 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2012 if (TMath::Abs(z+3.9*i)<0.15) {
2013 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2017 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2018 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2021 if (13<fR&&fR<26) { //SDD
2024 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2026 if (TMath::Abs(y-1.80)<0.55) {
2028 for (Int_t j=0; j<20; j++) {
2029 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2030 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2033 if (TMath::Abs(y+1.80)<0.55) {
2035 for (Int_t j=0; j<20; j++) {
2036 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2037 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2041 for (Int_t i=0; i<4; i++) {
2042 if (TMath::Abs(z-7.3*i)<0.60) {
2044 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2047 if (TMath::Abs(z+7.3*i)<0.60) {
2049 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2054 if (6<fR&&fR<8) { //SPD2
2055 Double_t dd=0.0063; x0=21.5;
2057 if (TMath::Abs(y-3.08)>0.5) d+=dd;
2058 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
2060 if (3<fR&&fR<5) { //SPD1
2061 Double_t dd=0.0063; x0=21.5;
2063 if (TMath::Abs(y+0.21)>0.6) d+=dd;
2064 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
2069 //------------------------------------------------------------------------
2070 AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2072 fRmisal(det.fRmisal),
2074 fSinPhi(det.fSinPhi),
2075 fCosPhi(det.fCosPhi),
2081 fNChips(det.fNChips),
2082 fChipIsBad(det.fChipIsBad)
2086 //------------------------------------------------------------------------
2087 void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2088 const AliITSDetTypeRec *detTypeRec)
2090 //--------------------------------------------------------------------
2091 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2092 //--------------------------------------------------------------------
2094 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2095 // while in the tracker they start from 0 for each layer
2096 for(Int_t il=0; il<ilayer; il++)
2097 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2100 if (ilayer==0 || ilayer==1) { // ---------- SPD
2102 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2104 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2107 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2111 // Get calibration from AliITSDetTypeRec
2112 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
2113 calib->SetModuleIndex(idet);
2114 AliITSCalibration *calibSPDdead = 0;
2115 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2116 if (calib->IsBad() ||
2117 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2120 // printf("lay %d bad %d\n",ilayer,idet);
2123 // Get segmentation from AliITSDetTypeRec
2124 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2126 // Read info about bad chips
2127 fNChips = segm->GetMaximumChipIndex()+1;
2128 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2129 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2130 fChipIsBad = new Bool_t[fNChips];
2131 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2132 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2133 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2134 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
2139 //------------------------------------------------------------------------
2140 Double_t AliITStrackerMI::GetEffectiveThickness()
2142 //--------------------------------------------------------------------
2143 // Returns the thickness between the current layer and the vertex (units X0)
2144 //--------------------------------------------------------------------
2147 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2148 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2149 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2153 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2154 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
2158 Double_t xn=fgLayers[fI].GetR();
2159 for (Int_t i=0; i<fI; i++) {
2160 Double_t xi=fgLayers[i].GetR();
2161 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2167 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2168 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
2171 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2172 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
2176 //------------------------------------------------------------------------
2177 Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
2178 //-------------------------------------------------------------------
2179 // This function returns number of clusters within the "window"
2180 //--------------------------------------------------------------------
2182 for (Int_t i=fI; i<fN; i++) {
2183 const AliITSRecPoint *c=fClusters[i];
2184 if (c->GetZ() > fZmax) break;
2185 if (c->IsUsed()) continue;
2186 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2187 Double_t y=fR*det.GetPhi() + c->GetY();
2189 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2190 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2192 if (y<fYmin) continue;
2193 if (y>fYmax) continue;
2198 //------------------------------------------------------------------------
2199 Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2200 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
2202 //--------------------------------------------------------------------
2203 // This function refits the track "track" at the position "x" using
2204 // the clusters from "clusters"
2205 // If "extra"==kTRUE,
2206 // the clusters from overlapped modules get attached to "track"
2207 // If "planeff"==kTRUE,
2208 // special approach for plane efficiency evaluation is applyed
2209 //--------------------------------------------------------------------
2211 Int_t index[AliITSgeomTGeo::kNLayers];
2213 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2214 Int_t nc=clusters->GetNumberOfClusters();
2215 for (k=0; k<nc; k++) {
2216 Int_t idx=clusters->GetClusterIndex(k);
2217 Int_t ilayer=(idx&0xf0000000)>>28;
2221 return RefitAt(xx,track,index,extra,planeeff); // call the method below
2223 //------------------------------------------------------------------------
2224 Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2225 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
2227 //--------------------------------------------------------------------
2228 // This function refits the track "track" at the position "x" using
2229 // the clusters from array
2230 // If "extra"==kTRUE,
2231 // the clusters from overlapped modules get attached to "track"
2232 // If "planeff"==kTRUE,
2233 // special approach for plane efficiency evaluation is applyed
2234 //--------------------------------------------------------------------
2235 Int_t index[AliITSgeomTGeo::kNLayers];
2237 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2239 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
2240 index[k]=clusters[k];
2243 // special for cosmics: check which the innermost layer crossed
2245 Int_t innermostlayer=5;
2246 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2247 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2248 if(drphi < fgLayers[innermostlayer].GetR()) break;
2250 //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
2252 Int_t modstatus=1; // found
2254 Int_t from, to, step;
2255 if (xx > track->GetX()) {
2256 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
2259 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
2262 TString dir = (step>0 ? "outward" : "inward");
2264 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
2265 AliITSlayer &layer=fgLayers[ilayer];
2266 Double_t r=layer.GetR();
2267 if (step<0 && xx>r) break;
2269 // material between SSD and SDD, SDD and SPD
2270 Double_t hI=ilayer-0.5*step;
2271 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
2272 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
2273 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
2274 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
2277 Double_t oldGlobXYZ[3];
2278 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
2280 // continue if we are already beyond this layer
2281 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2282 if(step>0 && oldGlobR > r) continue; // going outward
2283 if(step<0 && oldGlobR < r) continue; // going inward
2286 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
2288 Int_t idet=layer.FindDetectorIndex(phi,z);
2290 // check if we allow a prolongation without point for large-eta tracks
2291 Int_t skip = CheckSkipLayer(track,ilayer,idet);
2293 modstatus = 4; // out in z
2294 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2295 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2298 // apply correction for material of the current layer
2299 // add time if going outward
2300 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2304 if (idet<0) return kFALSE;
2306 const AliITSdetector &det=layer.GetDetector(idet);
2307 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
2309 track->SetDetectorIndex(idet);
2310 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2312 Double_t dz,zmin,zmax,dy,ymin,ymax;
2314 const AliITSRecPoint *clAcc=0;
2315 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2317 Int_t idx=index[ilayer];
2318 if (idx>=0) { // cluster in this layer
2319 modstatus = 6; // no refit
2320 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2322 if (idet != cl->GetDetectorIndex()) {
2323 idet=cl->GetDetectorIndex();
2324 const AliITSdetector &detc=layer.GetDetector(idet);
2325 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
2326 track->SetDetectorIndex(idet);
2327 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2329 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2330 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2334 modstatus = 1; // found
2339 } else { // no cluster in this layer
2341 modstatus = 3; // skipped
2342 // Plane Eff determination:
2343 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2344 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2345 UseTrackForPlaneEff(track,ilayer);
2348 modstatus = 5; // no cls in road
2350 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2351 dz = 0.5*(zmax-zmin);
2352 dy = 0.5*(ymax-ymin);
2353 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
2354 if (dead==1) modstatus = 7; // holes in z in SPD
2355 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
2360 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2361 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
2363 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2366 if (extra) { // search for extra clusters in overlapped modules
2367 AliITStrackV2 tmp(*track);
2368 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2369 layer.SelectClusters(zmin,zmax,ymin,ymax);
2371 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2373 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2374 Double_t tolerance=0.1;
2375 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2376 // only clusters in another module! (overlaps)
2377 idetExtra = clExtra->GetDetectorIndex();
2378 if (idet == idetExtra) continue;
2380 const AliITSdetector &detx=layer.GetDetector(idetExtra);
2382 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
2383 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2384 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
2385 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
2387 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2388 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2391 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2392 track->SetExtraModule(ilayer,idetExtra);
2394 } // end search for extra clusters in overlapped modules
2396 // Correct for material of the current layer
2398 // add time if going outward
2399 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
2401 } // end loop on layers
2403 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
2407 //------------------------------------------------------------------------
2408 Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
2411 // calculate normalized chi2
2412 // return NormalizedChi2(track,0);
2415 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2416 // track->fdEdxMismatch=0;
2417 Float_t dedxmismatch =0;
2418 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2420 for (Int_t i = 0;i<6;i++){
2421 if (track->GetClIndex(i)>=0){
2422 Float_t cerry, cerrz;
2423 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2425 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2428 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
2429 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
2430 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
2432 cchi2+=(0.5-ratio)*10.;
2433 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2434 dedxmismatch+=(0.5-ratio)*10.;
2438 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
2439 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2440 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2441 if (i<2) chi2+=2*cl->GetDeltaProbability();
2447 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2448 track->SetdEdxMismatch(dedxmismatch);
2452 for (Int_t i = 0;i<4;i++){
2453 if (track->GetClIndex(i)>=0){
2454 Float_t cerry, cerrz;
2455 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2456 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2459 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2460 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
2464 for (Int_t i = 4;i<6;i++){
2465 if (track->GetClIndex(i)>=0){
2466 Float_t cerry, cerrz;
2467 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2468 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2471 Float_t cerryb, cerrzb;
2472 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
2473 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
2476 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2477 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
2482 if (track->GetESDtrack()->GetTPCsignal()>85){
2483 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
2485 chi2+=(0.5-ratio)*5.;
2488 chi2+=(ratio-2.0)*3;
2492 Double_t match = TMath::Sqrt(track->GetChi22());
2493 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2494 if (!track->GetConstrain()) {
2495 if (track->GetNumberOfClusters()>2) {
2496 match/=track->GetNumberOfClusters()-2.;
2501 if (match<0) match=0;
2503 // penalty factor for missing points (NDeadZone>0), but no penalty
2504 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2505 // or there is a dead from OCDB)
2506 Float_t deadzonefactor = 0.;
2507 if (track->GetNDeadZone()>0.) {
2508 Float_t sumDeadZoneProbability=0;
2509 for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay);
2510 Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2511 if(nDeadZoneWithProbNot1>0.) {
2512 Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability);
2513 deadZoneProbability /= nDeadZoneWithProbNot1;
2514 deadzonefactor = 3.*(1.1-deadZoneProbability);
2518 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2519 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2520 1./(1.+track->GetNSkipped()));
2524 //------------------------------------------------------------------------
2525 Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
2528 // return matching chi2 between two tracks
2529 Double_t largeChi2=1000.;
2531 AliITStrackMI track3(*track2);
2532 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
2534 vec(0,0)=track1->GetY() - track3.GetY();
2535 vec(1,0)=track1->GetZ() - track3.GetZ();
2536 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2537 vec(3,0)=track1->GetTgl() - track3.GetTgl();
2538 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
2541 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2542 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2543 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2544 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2545 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
2547 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2548 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2549 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2550 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
2552 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2553 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2554 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
2556 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2557 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
2559 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
2562 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2563 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2566 //------------------------------------------------------------------------
2567 Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
2570 // return probability that given point (characterized by z position and error)
2571 // is in SPD dead zone
2573 Double_t probability = 0.;
2574 Double_t absz = TMath::Abs(zpos);
2575 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2576 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2577 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2578 Double_t zmin, zmax;
2579 if (zpos<-6.) { // dead zone at z = -7
2580 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2581 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2582 } else if (zpos>6.) { // dead zone at z = +7
2583 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2584 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2585 } else if (absz<2.) { // dead zone at z = 0
2586 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2587 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2592 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2594 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2595 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
2598 //------------------------------------------------------------------------
2599 Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
2602 // calculate normalized chi2
2604 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2606 for (Int_t i = 0;i<6;i++){
2607 if (TMath::Abs(track->GetDy(i))>0){
2608 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2609 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
2612 else{chi2[i]=10000;}
2615 TMath::Sort(6,chi2,index,kFALSE);
2616 Float_t max = float(ncl)*fac-1.;
2617 Float_t sumchi=0, sumweight=0;
2618 for (Int_t i=0;i<max+1;i++){
2619 Float_t weight = (i<max)?1.:(max+1.-i);
2620 sumchi+=weight*chi2[index[i]];
2623 Double_t normchi2 = sumchi/sumweight;
2626 //------------------------------------------------------------------------
2627 Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
2630 // calculate normalized chi2
2631 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2634 for (Int_t i=0;i<6;i++){
2635 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2636 Double_t sy1 = forwardtrack->GetSigmaY(i);
2637 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2638 Double_t sy2 = backtrack->GetSigmaY(i);
2639 Double_t sz2 = backtrack->GetSigmaZ(i);
2640 if (i<2){ sy2=1000.;sz2=1000;}
2642 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2643 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
2645 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2646 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2648 res+= nz0*nz0+ny0*ny0;
2651 if (npoints>1) return
2652 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
2653 //2*forwardtrack->fNUsed+
2654 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2655 1./(1.+forwardtrack->GetNSkipped()));
2658 //------------------------------------------------------------------------
2659 Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2660 //--------------------------------------------------------------------
2661 // Return pointer to a given cluster
2662 //--------------------------------------------------------------------
2663 Int_t l=(index & 0xf0000000) >> 28;
2664 Int_t c=(index & 0x0fffffff) >> 00;
2665 return fgLayers[l].GetWeight(c);
2667 //------------------------------------------------------------------------
2668 void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
2670 //---------------------------------------------
2671 // register track to the list
2673 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
2676 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2677 Int_t index = track->GetClusterIndex(icluster);
2678 Int_t l=(index & 0xf0000000) >> 28;
2679 Int_t c=(index & 0x0fffffff) >> 00;
2680 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2681 for (Int_t itrack=0;itrack<4;itrack++){
2682 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2683 fgLayers[l].SetClusterTracks(itrack,c,id);
2689 //------------------------------------------------------------------------
2690 void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
2692 //---------------------------------------------
2693 // unregister track from the list
2694 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2695 Int_t index = track->GetClusterIndex(icluster);
2696 Int_t l=(index & 0xf0000000) >> 28;
2697 Int_t c=(index & 0x0fffffff) >> 00;
2698 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2699 for (Int_t itrack=0;itrack<4;itrack++){
2700 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2701 fgLayers[l].SetClusterTracks(itrack,c,-1);
2706 //------------------------------------------------------------------------
2707 Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
2709 //-------------------------------------------------------------
2710 //get number of shared clusters
2711 //-------------------------------------------------------------
2713 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2714 // mean number of clusters
2715 Float_t *ny = GetNy(id), *nz = GetNz(id);
2718 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2719 Int_t index = track->GetClusterIndex(icluster);
2720 Int_t l=(index & 0xf0000000) >> 28;
2721 Int_t c=(index & 0x0fffffff) >> 00;
2722 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2724 printf("problem\n");
2726 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2730 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
2731 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2732 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
2734 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2737 deltan = (cl->GetNz()-nz[l]);
2739 if (deltan>2.0) continue; // extended - highly probable shared cluster
2740 weight = 2./TMath::Max(3.+deltan,2.);
2742 for (Int_t itrack=0;itrack<4;itrack++){
2743 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
2745 clist[l] = (AliITSRecPoint*)GetCluster(index);
2751 track->SetNUsed(shared);
2754 //------------------------------------------------------------------------
2755 Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
2758 // find first shared track
2760 // mean number of clusters
2761 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2763 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2764 Int_t sharedtrack=100000;
2765 Int_t tracks[24],trackindex=0;
2766 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2768 for (Int_t icluster=0;icluster<6;icluster++){
2769 if (clusterlist[icluster]<0) continue;
2770 Int_t index = clusterlist[icluster];
2771 Int_t l=(index & 0xf0000000) >> 28;
2772 Int_t c=(index & 0x0fffffff) >> 00;
2774 printf("problem\n");
2776 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2777 //if (l>3) continue;
2778 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2781 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
2782 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2783 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
2785 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2788 deltan = (cl->GetNz()-nz[l]);
2790 if (deltan>2.0) continue; // extended - highly probable shared cluster
2792 for (Int_t itrack=3;itrack>=0;itrack--){
2793 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2794 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2795 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
2800 if (trackindex==0) return -1;
2802 sharedtrack = tracks[0];
2804 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2807 Int_t tracks2[24], cluster[24];
2808 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
2811 for (Int_t i=0;i<trackindex;i++){
2812 if (tracks[i]<0) continue;
2813 tracks2[index] = tracks[i];
2815 for (Int_t j=i+1;j<trackindex;j++){
2816 if (tracks[j]<0) continue;
2817 if (tracks[j]==tracks[i]){
2825 for (Int_t i=0;i<index;i++){
2826 if (cluster[index]>max) {
2827 sharedtrack=tracks2[index];
2834 if (sharedtrack>=100000) return -1;
2836 // make list of overlaps
2838 for (Int_t icluster=0;icluster<6;icluster++){
2839 if (clusterlist[icluster]<0) continue;
2840 Int_t index = clusterlist[icluster];
2841 Int_t l=(index & 0xf0000000) >> 28;
2842 Int_t c=(index & 0x0fffffff) >> 00;
2843 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2844 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2846 if (cl->GetNy()>2) continue;
2847 if (cl->GetNz()>2) continue;
2850 if (cl->GetNy()>3) continue;
2851 if (cl->GetNz()>3) continue;
2854 for (Int_t itrack=3;itrack>=0;itrack--){
2855 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2856 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
2864 //------------------------------------------------------------------------
2865 AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
2867 // try to find track hypothesys without conflicts
2868 // with minimal chi2;
2869 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2870 Int_t entries1 = arr1->GetEntriesFast();
2871 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
2872 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
2873 Int_t entries2 = arr2->GetEntriesFast();
2874 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
2876 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2877 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
2878 if (track10->Pt()>0.5+track20->Pt()) return track10;
2880 for (Int_t itrack=0;itrack<entries1;itrack++){
2881 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
2882 UnRegisterClusterTracks(track,trackID1);
2885 for (Int_t itrack=0;itrack<entries2;itrack++){
2886 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
2887 UnRegisterClusterTracks(track,trackID2);
2891 Float_t maxconflicts=6;
2892 Double_t maxchi2 =1000.;
2894 // get weight of hypothesys - using best hypothesy
2897 Int_t list1[6],list2[6];
2898 AliITSRecPoint *clist1[6], *clist2[6] ;
2899 RegisterClusterTracks(track10,trackID1);
2900 RegisterClusterTracks(track20,trackID2);
2901 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2902 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2903 UnRegisterClusterTracks(track10,trackID1);
2904 UnRegisterClusterTracks(track20,trackID2);
2907 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2908 Float_t nerry[6],nerrz[6];
2909 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2910 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2911 for (Int_t i=0;i<6;i++){
2912 if ( (erry1[i]>0) && (erry2[i]>0)) {
2913 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2914 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2916 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2917 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2919 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2920 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2921 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
2924 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2925 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2926 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
2934 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2935 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
2936 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2937 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2939 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2940 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
2941 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
2943 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2944 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
2945 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
2948 Double_t sumw = w1+w2;
2952 w1 = (d2+0.5)/(d1+d2+1.);
2953 w2 = (d1+0.5)/(d1+d2+1.);
2955 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2956 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2958 // get pair of "best" hypothesys
2960 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2961 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2963 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
2964 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
2965 //if (track1->fFakeRatio>0) continue;
2966 RegisterClusterTracks(track1,trackID1);
2967 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
2968 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
2970 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2971 //if (track2->fFakeRatio>0) continue;
2973 RegisterClusterTracks(track2,trackID2);
2974 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2975 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2976 UnRegisterClusterTracks(track2,trackID2);
2978 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2979 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
2980 if (nskipped>0.5) continue;
2982 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2983 if (conflict1+1<cconflict1) continue;
2984 if (conflict2+1<cconflict2) continue;
2988 for (Int_t i=0;i<6;i++){
2990 Float_t c1 =0.; // conflict coeficients
2992 if (clist1[i]&&clist2[i]){
2995 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2998 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
3000 c1 = 2./TMath::Max(3.+deltan,2.);
3001 c2 = 2./TMath::Max(3.+deltan,2.);
3007 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3010 deltan = (clist1[i]->GetNz()-nz1[i]);
3012 c1 = 2./TMath::Max(3.+deltan,2.);
3019 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3022 deltan = (clist2[i]->GetNz()-nz2[i]);
3024 c2 = 2./TMath::Max(3.+deltan,2.);
3030 if (TMath::Abs(track1->GetDy(i))>0.) {
3031 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3032 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
3033 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
3034 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
3036 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
3039 if (TMath::Abs(track2->GetDy(i))>0.) {
3040 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3041 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
3042 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3043 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3046 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
3048 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3049 if (chi21>0) sum+=w1;
3050 if (chi22>0) sum+=w2;
3053 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3054 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
3055 Double_t normchi2 = 2*conflict+sumchi2/sum;
3056 if ( normchi2 <maxchi2 ){
3059 maxconflicts = conflict;
3063 UnRegisterClusterTracks(track1,trackID1);
3066 // if (maxconflicts<4 && maxchi2<th0){
3067 if (maxchi2<th0*2.){
3068 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
3069 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
3070 track1->SetChi2MIP(5,maxconflicts);
3071 track1->SetChi2MIP(6,maxchi2);
3072 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
3073 // track1->UpdateESDtrack(AliESDtrack::kITSin);
3074 track1->SetChi2MIP(8,index1);
3075 fBestTrackIndex[trackID1] =index1;
3076 UpdateESDtrack(track1, AliESDtrack::kITSin);
3078 else if (track10->GetChi2MIP(0)<th1){
3079 track10->SetChi2MIP(5,maxconflicts);
3080 track10->SetChi2MIP(6,maxchi2);
3081 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3082 UpdateESDtrack(track10,AliESDtrack::kITSin);
3085 for (Int_t itrack=0;itrack<entries1;itrack++){
3086 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
3087 UnRegisterClusterTracks(track,trackID1);
3090 for (Int_t itrack=0;itrack<entries2;itrack++){
3091 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
3092 UnRegisterClusterTracks(track,trackID2);
3095 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3096 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3097 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3098 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3099 RegisterClusterTracks(track10,trackID1);
3101 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3102 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3103 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3104 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3105 RegisterClusterTracks(track20,trackID2);
3110 //------------------------------------------------------------------------
3111 void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3112 //--------------------------------------------------------------------
3113 // This function marks clusters assigned to the track
3114 //--------------------------------------------------------------------
3115 AliTracker::UseClusters(t,from);
3117 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
3118 //if (c->GetQ()>2) c->Use();
3119 if (c->GetSigmaZ2()>0.1) c->Use();
3120 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
3121 //if (c->GetQ()>2) c->Use();
3122 if (c->GetSigmaZ2()>0.1) c->Use();
3125 //------------------------------------------------------------------------
3126 void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
3128 //------------------------------------------------------------------
3129 // add track to the list of hypothesys
3130 //------------------------------------------------------------------
3132 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3133 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
3135 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3137 array = new TObjArray(10);
3138 fTrackHypothesys.AddAt(array,esdindex);
3140 array->AddLast(track);
3142 //------------------------------------------------------------------------
3143 void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3145 //-------------------------------------------------------------------
3146 // compress array of track hypothesys
3147 // keep only maxsize best hypothesys
3148 //-------------------------------------------------------------------
3149 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3150 if (! (fTrackHypothesys.At(esdindex)) ) return;
3151 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3152 Int_t entries = array->GetEntriesFast();
3154 //- find preliminary besttrack as a reference
3155 Float_t minchi2=10000;
3157 AliITStrackMI * besttrack=0;
3158 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
3159 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3160 if (!track) continue;
3161 Float_t chi2 = NormalizedChi2(track,0);
3163 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
3164 track->SetLabel(tpcLabel);
3166 track->SetFakeRatio(1.);
3167 CookLabel(track,0.); //For comparison only
3169 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3170 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3171 if (track->GetNumberOfClusters()<maxn) continue;
3172 maxn = track->GetNumberOfClusters();
3179 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3180 delete array->RemoveAt(itrack);
3184 if (!besttrack) return;
3187 //take errors of best track as a reference
3188 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3189 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3190 for (Int_t j=0;j<6;j++) {
3191 if (besttrack->GetClIndex(j)>=0){
3192 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3193 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3194 ny[j] = besttrack->GetNy(j);
3195 nz[j] = besttrack->GetNz(j);
3199 // calculate normalized chi2
3201 Float_t * chi2 = new Float_t[entries];
3202 Int_t * index = new Int_t[entries];
3203 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3204 for (Int_t itrack=0;itrack<entries;itrack++){
3205 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3207 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
3208 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
3209 chi2[itrack] = track->GetChi2MIP(0);
3211 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3212 delete array->RemoveAt(itrack);
3218 TMath::Sort(entries,chi2,index,kFALSE);
3219 besttrack = (AliITStrackMI*)array->At(index[0]);
3220 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3221 for (Int_t j=0;j<6;j++){
3222 if (besttrack->GetClIndex(j)>=0){
3223 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3224 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3225 ny[j] = besttrack->GetNy(j);
3226 nz[j] = besttrack->GetNz(j);
3231 // calculate one more time with updated normalized errors
3232 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3233 for (Int_t itrack=0;itrack<entries;itrack++){
3234 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3236 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3237 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
3238 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3241 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3242 delete array->RemoveAt(itrack);
3247 entries = array->GetEntriesFast();
3251 TObjArray * newarray = new TObjArray();
3252 TMath::Sort(entries,chi2,index,kFALSE);
3253 besttrack = (AliITStrackMI*)array->At(index[0]);
3256 for (Int_t j=0;j<6;j++){
3257 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3258 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3259 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3260 ny[j] = besttrack->GetNy(j);
3261 nz[j] = besttrack->GetNz(j);
3264 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
3265 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
3266 Float_t minn = besttrack->GetNumberOfClusters()-3;
3268 for (Int_t i=0;i<entries;i++){
3269 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
3270 if (!track) continue;
3271 if (accepted>maxcut) break;
3272 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3273 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3274 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
3275 delete array->RemoveAt(index[i]);
3279 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3280 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
3281 if (!shortbest) accepted++;
3283 newarray->AddLast(array->RemoveAt(index[i]));
3284 for (Int_t j=0;j<6;j++){
3286 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3287 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3288 ny[j] = track->GetNy(j);
3289 nz[j] = track->GetNz(j);
3294 delete array->RemoveAt(index[i]);
3298 delete fTrackHypothesys.RemoveAt(esdindex);
3299 fTrackHypothesys.AddAt(newarray,esdindex);
3303 delete fTrackHypothesys.RemoveAt(esdindex);
3309 //------------------------------------------------------------------------
3310 AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
3312 //-------------------------------------------------------------
3313 // try to find best hypothesy
3314 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3315 //-------------------------------------------------------------
3316 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3317 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3318 if (!array) return 0;
3319 Int_t entries = array->GetEntriesFast();
3320 if (!entries) return 0;
3321 Float_t minchi2 = 100000;
3322 AliITStrackMI * besttrack=0;
3324 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3325 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
3326 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3327 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
3329 for (Int_t i=0;i<entries;i++){
3330 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3331 if (!track) continue;
3332 Float_t sigmarfi,sigmaz;
3333 GetDCASigma(track,sigmarfi,sigmaz);
3334 track->SetDnorm(0,sigmarfi);
3335 track->SetDnorm(1,sigmaz);
3337 track->SetChi2MIP(1,1000000);
3338 track->SetChi2MIP(2,1000000);
3339 track->SetChi2MIP(3,1000000);
3342 backtrack = new(backtrack) AliITStrackMI(*track);
3343 if (track->GetConstrain()) {
3344 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
3345 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
3346 backtrack->ResetCovariance(10.);
3348 backtrack->ResetCovariance(10.);
3350 backtrack->ResetClusters();
3352 Double_t x = original->GetX();
3353 if (!RefitAt(x,backtrack,track)) continue;
3355 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
3356 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
3357 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
3358 track->SetChi22(GetMatchingChi2(backtrack,original));
3360 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3361 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3362 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
3365 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
3367 //forward track - without constraint
3368 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
3369 forwardtrack->ResetClusters();
3371 RefitAt(x,forwardtrack,track);
3372 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
3373 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3374 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
3376 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3377 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3378 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3379 forwardtrack->SetD(0,track->GetD(0));
3380 forwardtrack->SetD(1,track->GetD(1));
3383 AliITSRecPoint* clist[6];
3384 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3385 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
3388 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
3389 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3390 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
3391 track->SetChi2MIP(3,1000);
3394 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
3396 for (Int_t ichi=0;ichi<5;ichi++){
3397 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
3399 if (chi2 < minchi2){
3400 //besttrack = new AliITStrackMI(*forwardtrack);
3402 besttrack->SetLabel(track->GetLabel());
3403 besttrack->SetFakeRatio(track->GetFakeRatio());
3405 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3406 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3407 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
3411 delete forwardtrack;
3413 for (Int_t i=0;i<entries;i++){
3414 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3416 if (!track) continue;
3418 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
3419 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
3420 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3421 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3422 delete array->RemoveAt(i);
3432 SortTrackHypothesys(esdindex,checkmax,1);
3434 array = (TObjArray*) fTrackHypothesys.At(esdindex);
3435 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
3436 besttrack = (AliITStrackMI*)array->At(0);
3437 if (!besttrack) return 0;
3438 besttrack->SetChi2MIP(8,0);
3439 fBestTrackIndex[esdindex]=0;
3440 entries = array->GetEntriesFast();
3441 AliITStrackMI *longtrack =0;
3443 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
3444 for (Int_t itrack=entries-1;itrack>0;itrack--) {
3445 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3446 if (!track->GetConstrain()) continue;
3447 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3448 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3449 if (track->GetChi2MIP(0)>4.) continue;
3450 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
3453 //if (longtrack) besttrack=longtrack;
3456 AliITSRecPoint * clist[6];
3457 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3458 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3459 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3460 RegisterClusterTracks(besttrack,esdindex);
3467 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3468 if (sharedtrack>=0){
3470 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3472 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3478 if (shared>2.5) return 0;
3479 if (shared>1.0) return besttrack;
3481 // Don't sign clusters if not gold track
3483 if (!besttrack->IsGoldPrimary()) return besttrack;
3484 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
3486 if (fConstraint[fPass]){
3490 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3491 for (Int_t i=0;i<6;i++){
3492 Int_t index = besttrack->GetClIndex(i);
3493 if (index<0) continue;
3494 Int_t ilayer = (index & 0xf0000000) >> 28;
3495 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
3496 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
3498 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3499 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3500 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
3501 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3502 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
3503 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3505 Bool_t cansign = kTRUE;
3506 for (Int_t itrack=0;itrack<entries; itrack++){
3507 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3508 if (!track) continue;
3509 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
3510 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
3516 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3517 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
3518 if (!c->IsUsed()) c->Use();
3524 //------------------------------------------------------------------------
3525 void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3528 // get "best" hypothesys
3531 Int_t nentries = itsTracks.GetEntriesFast();
3532 for (Int_t i=0;i<nentries;i++){
3533 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
3534 if (!track) continue;
3535 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3536 if (!array) continue;
3537 if (array->GetEntriesFast()<=0) continue;
3539 AliITStrackMI* longtrack=0;
3541 Float_t maxchi2=1000;
3542 for (Int_t j=0;j<array->GetEntriesFast();j++){
3543 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3544 if (!trackHyp) continue;
3545 if (trackHyp->GetGoldV0()) {
3546 longtrack = trackHyp; //gold V0 track taken
3549 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3550 Float_t chi2 = trackHyp->GetChi2MIP(0);
3552 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
3554 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
3556 if (chi2 > maxchi2) continue;
3557 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3564 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
3565 if (!longtrack) {longtrack = besttrack;}
3566 else besttrack= longtrack;
3570 AliITSRecPoint * clist[6];
3571 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3573 track->SetNUsed(shared);
3574 track->SetNSkipped(besttrack->GetNSkipped());
3575 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
3577 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3581 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3582 //if (sharedtrack==-1) sharedtrack=0;
3583 if (sharedtrack>=0) {
3584 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3587 if (besttrack&&fAfterV0) {
3588 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3590 if (besttrack&&fConstraint[fPass])
3591 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3592 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3593 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3594 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3600 //------------------------------------------------------------------------
3601 void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
3602 //--------------------------------------------------------------------
3603 //This function "cooks" a track label. If label<0, this track is fake.
3604 //--------------------------------------------------------------------
3607 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
3609 track->SetChi2MIP(9,0);
3611 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3612 Int_t cindex = track->GetClusterIndex(i);
3613 Int_t l=(cindex & 0xf0000000) >> 28;
3614 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
3616 for (Int_t ind=0;ind<3;ind++){
3618 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
3619 AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
3621 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
3624 Int_t nclusters = track->GetNumberOfClusters();
3625 if (nclusters > 0) //PH Some tracks don't have any cluster
3626 track->SetFakeRatio(double(nwrong)/double(nclusters));
3628 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
3630 track->SetLabel(tpcLabel);
3632 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
3635 //------------------------------------------------------------------------
3636 void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
3639 track->SetChi2MIP(9,0);
3640 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3641 Int_t cindex = track->GetClusterIndex(i);
3642 Int_t l=(cindex & 0xf0000000) >> 28;
3643 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
3644 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
3646 for (Int_t ind=0;ind<3;ind++){
3647 if (cl->GetLabel(ind)==lab) isWrong=0;
3649 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
3653 track->CookdEdx(low,up);
3655 //------------------------------------------------------------------------
3656 void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
3658 // Create some arrays
3660 if (fCoefficients) delete []fCoefficients;
3661 fCoefficients = new Float_t[ntracks*48];
3662 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
3664 //------------------------------------------------------------------------
3665 Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
3668 // Compute predicted chi2
3670 Float_t erry,errz,covyz;
3671 Float_t theta = track->GetTgl();
3672 Float_t phi = track->GetSnp();
3673 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
3674 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
3675 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()));
3676 // Take into account the mis-alignment (bring track to cluster plane)
3677 Double_t xTrOrig=track->GetX();
3678 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
3679 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()));
3680 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
3681 // Bring the track back to detector plane in ideal geometry
3682 // [mis-alignment will be accounted for in UpdateMI()]
3683 if (!track->Propagate(xTrOrig)) return 1000.;
3685 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
3686 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3688 chi2+=0.5*TMath::Min(delta/2,2.);
3689 chi2+=2.*cluster->GetDeltaProbability();
3692 track->SetNy(layer,ny);
3693 track->SetNz(layer,nz);
3694 track->SetSigmaY(layer,erry);
3695 track->SetSigmaZ(layer, errz);
3696 track->SetSigmaYZ(layer,covyz);
3697 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
3698 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
3702 //------------------------------------------------------------------------
3703 Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
3708 Int_t layer = (index & 0xf0000000) >> 28;
3709 track->SetClIndex(layer, index);
3710 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3711 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3712 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3713 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3717 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
3720 // Take into account the mis-alignment (bring track to cluster plane)
3721 Double_t xTrOrig=track->GetX();
3722 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3723 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3724 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3725 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
3727 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
3730 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3731 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3732 c.SetSigmaYZ(track->GetSigmaYZ(layer));
3735 Int_t updated = track->UpdateMI(&c,chi2,index);
3736 // Bring the track back to detector plane in ideal geometry
3737 if (!track->Propagate(xTrOrig)) return 0;
3739 if(!updated) AliDebug(2,"update failed");
3743 //------------------------------------------------------------------------
3744 void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
3747 //DCA sigmas parameterization
3748 //to be paramterized using external parameters in future
3751 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3752 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
3754 //------------------------------------------------------------------------
3755 void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
3758 // Clusters from delta electrons?
3760 Int_t entries = clusterArray->GetEntriesFast();
3761 if (entries<4) return;
3762 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
3763 Int_t layer = cluster->GetLayer();
3764 if (layer>1) return;
3766 Int_t ncandidates=0;
3767 Float_t r = (layer>0)? 7:4;
3769 for (Int_t i=0;i<entries;i++){
3770 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
3771 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3772 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3773 index[ncandidates] = i; //candidate to belong to delta electron track
3775 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3776 cl0->SetDeltaProbability(1);
3782 for (Int_t i=0;i<ncandidates;i++){
3783 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
3784 if (cl0->GetDeltaProbability()>0.8) continue;
3787 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3788 sumy=sumz=sumy2=sumyz=sumw=0.0;
3789 for (Int_t j=0;j<ncandidates;j++){
3791 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
3793 Float_t dz = cl0->GetZ()-cl1->GetZ();
3794 Float_t dy = cl0->GetY()-cl1->GetY();
3795 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3796 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3797 y[ncl] = cl1->GetY();
3798 z[ncl] = cl1->GetZ();
3799 sumy+= y[ncl]*weight;
3800 sumz+= z[ncl]*weight;
3801 sumy2+=y[ncl]*y[ncl]*weight;
3802 sumyz+=y[ncl]*z[ncl]*weight;
3807 if (ncl<4) continue;
3808 Float_t det = sumw*sumy2 - sumy*sumy;
3810 if (TMath::Abs(det)>0.01){
3811 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3812 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3813 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3816 Float_t z0 = sumyz/sumy;
3817 delta = TMath::Abs(cl0->GetZ()-z0);
3820 cl0->SetDeltaProbability(1-20.*delta);
3824 //------------------------------------------------------------------------
3825 void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
3830 track->UpdateESDtrack(flags);
3831 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
3832 if (oldtrack) delete oldtrack;
3833 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3834 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
3835 printf("Problem\n");
3838 //------------------------------------------------------------------------
3839 Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3841 // Get nearest upper layer close to the point xr.
3842 // rough approximation
3844 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
3845 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3847 for (Int_t i=0;i<6;i++){
3848 if (radius<kRadiuses[i]){
3855 //------------------------------------------------------------------------
3856 void AliITStrackerMI::BuildMaterialLUT(TString material) {
3857 //--------------------------------------------------------------------
3858 // Fill a look-up table with mean material
3859 //--------------------------------------------------------------------
3863 Double_t point1[3],point2[3];
3864 Double_t phi,cosphi,sinphi,z;
3865 // 0-5 layers, 6 pipe, 7-8 shields
3866 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3867 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
3869 Int_t ifirst=0,ilast=0;
3870 if(material.Contains("Pipe")) {
3872 } else if(material.Contains("Shields")) {
3874 } else if(material.Contains("Layers")) {
3877 Error("BuildMaterialLUT","Wrong layer name\n");
3880 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3881 Double_t param[5]={0.,0.,0.,0.,0.};
3882 for (Int_t i=0; i<n; i++) {
3883 phi = 2.*TMath::Pi()*gRandom->Rndm();
3884 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3885 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3886 point1[0] = rmin[imat]*cosphi;
3887 point1[1] = rmin[imat]*sinphi;
3889 point2[0] = rmax[imat]*cosphi;
3890 point2[1] = rmax[imat]*sinphi;
3892 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3893 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3895 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3897 fxOverX0Layer[imat] = param[1];
3898 fxTimesRhoLayer[imat] = param[0]*param[4];
3899 } else if(imat==6) {
3900 fxOverX0Pipe = param[1];
3901 fxTimesRhoPipe = param[0]*param[4];
3902 } else if(imat==7) {
3903 fxOverX0Shield[0] = param[1];
3904 fxTimesRhoShield[0] = param[0]*param[4];
3905 } else if(imat==8) {
3906 fxOverX0Shield[1] = param[1];
3907 fxTimesRhoShield[1] = param[0]*param[4];
3911 printf("%s\n",material.Data());
3912 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3913 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3914 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3915 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3916 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3917 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3918 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3919 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3920 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3924 //------------------------------------------------------------------------
3925 Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3926 TString direction) {
3927 //-------------------------------------------------------------------
3928 // Propagate beyond beam pipe and correct for material
3929 // (material budget in different ways according to fUseTGeo value)
3930 // Add time if going outward (PropagateTo or PropagateToTGeo)
3931 //-------------------------------------------------------------------
3933 // Define budget mode:
3934 // 0: material from AliITSRecoParam (hard coded)
3935 // 1: material from TGeo in one step (on the fly)
3936 // 2: material from lut
3937 // 3: material from TGeo in one step (same for all hypotheses)
3950 if(fTrackingPhase.Contains("Clusters2Tracks"))
3951 { mode=3; } else { mode=1; }
3954 if(fTrackingPhase.Contains("Clusters2Tracks"))
3955 { mode=3; } else { mode=2; }
3961 if(fTrackingPhase.Contains("Default")) mode=0;
3963 Int_t index=fCurrentEsdTrack;
3965 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
3966 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
3968 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
3970 Double_t xOverX0,x0,lengthTimesMeanDensity;
3974 xOverX0 = AliITSRecoParam::GetdPipe();
3975 x0 = AliITSRecoParam::GetX0Be();
3976 lengthTimesMeanDensity = xOverX0*x0;
3977 lengthTimesMeanDensity *= dir;
3978 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
3981 if (!t->PropagateToTGeo(xToGo,1)) return 0;
3984 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
3985 xOverX0 = fxOverX0Pipe;
3986 lengthTimesMeanDensity = fxTimesRhoPipe;
3987 lengthTimesMeanDensity *= dir;
3988 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
3991 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
3992 if(fxOverX0PipeTrks[index]<0) {
3993 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
3994 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
3995 ((1.-t->GetSnp())*(1.+t->GetSnp())));
3996 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
3997 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4000 xOverX0 = fxOverX0PipeTrks[index];
4001 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
4002 lengthTimesMeanDensity *= dir;
4003 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4009 //------------------------------------------------------------------------
4010 Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4012 TString direction) {
4013 //-------------------------------------------------------------------
4014 // Propagate beyond SPD or SDD shield and correct for material
4015 // (material budget in different ways according to fUseTGeo value)
4016 // Add time if going outward (PropagateTo or PropagateToTGeo)
4017 //-------------------------------------------------------------------
4019 // Define budget mode:
4020 // 0: material from AliITSRecoParam (hard coded)
4021 // 1: material from TGeo in steps of X cm (on the fly)
4022 // X = AliITSRecoParam::GetStepSizeTGeo()
4023 // 2: material from lut
4024 // 3: material from TGeo in one step (same for all hypotheses)
4037 if(fTrackingPhase.Contains("Clusters2Tracks"))
4038 { mode=3; } else { mode=1; }
4041 if(fTrackingPhase.Contains("Clusters2Tracks"))
4042 { mode=3; } else { mode=2; }
4048 if(fTrackingPhase.Contains("Default")) mode=0;
4050 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4052 Int_t shieldindex=0;
4053 if (shield.Contains("SDD")) { // SDDouter
4054 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4056 } else if (shield.Contains("SPD")) { // SPDouter
4057 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4060 Error("CorrectForShieldMaterial"," Wrong shield name\n");
4064 // do nothing if we are already beyond the shield
4065 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4066 if(dir<0 && rTrack > rToGo) return 1; // going outward
4067 if(dir>0 && rTrack < rToGo) return 1; // going inward
4071 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4073 Int_t index=2*fCurrentEsdTrack+shieldindex;
4075 Double_t xOverX0,x0,lengthTimesMeanDensity;
4080 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4081 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4082 lengthTimesMeanDensity = xOverX0*x0;
4083 lengthTimesMeanDensity *= dir;
4084 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4087 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4088 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4091 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4092 xOverX0 = fxOverX0Shield[shieldindex];
4093 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
4094 lengthTimesMeanDensity *= dir;
4095 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4098 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4099 if(fxOverX0ShieldTrks[index]<0) {
4100 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4101 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4102 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4103 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4104 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4107 xOverX0 = fxOverX0ShieldTrks[index];
4108 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
4109 lengthTimesMeanDensity *= dir;
4110 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4116 //------------------------------------------------------------------------
4117 Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4119 Double_t oldGlobXYZ[3],
4120 TString direction) {
4121 //-------------------------------------------------------------------
4122 // Propagate beyond layer and correct for material
4123 // (material budget in different ways according to fUseTGeo value)
4124 // Add time if going outward (PropagateTo or PropagateToTGeo)
4125 //-------------------------------------------------------------------
4127 // Define budget mode:
4128 // 0: material from AliITSRecoParam (hard coded)
4129 // 1: material from TGeo in stepsof X cm (on the fly)
4130 // X = AliITSRecoParam::GetStepSizeTGeo()
4131 // 2: material from lut
4132 // 3: material from TGeo in one step (same for all hypotheses)
4145 if(fTrackingPhase.Contains("Clusters2Tracks"))
4146 { mode=3; } else { mode=1; }
4149 if(fTrackingPhase.Contains("Clusters2Tracks"))
4150 { mode=3; } else { mode=2; }
4156 if(fTrackingPhase.Contains("Default")) mode=0;
4158 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4160 Double_t r=fgLayers[layerindex].GetR();
4161 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4163 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
4165 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4167 Int_t index=6*fCurrentEsdTrack+layerindex;
4170 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
4173 // back before material (no correction)
4175 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4176 if (!t->GetLocalXat(rOld,xOld)) return 0;
4177 if (!t->Propagate(xOld)) return 0;
4181 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4182 lengthTimesMeanDensity = xOverX0*x0;
4183 lengthTimesMeanDensity *= dir;
4184 // Bring the track beyond the material
4185 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4188 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4189 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4192 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4193 xOverX0 = fxOverX0Layer[layerindex];
4194 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
4195 lengthTimesMeanDensity *= dir;
4196 // Bring the track beyond the material
4197 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4200 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
4201 if(fxOverX0LayerTrks[index]<0) {
4202 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4203 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
4204 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4205 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4206 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4207 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4210 xOverX0 = fxOverX0LayerTrks[index];
4211 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
4212 lengthTimesMeanDensity *= dir;
4213 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4220 //------------------------------------------------------------------------
4221 void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4222 //-----------------------------------------------------------------
4223 // Initialize LUT for storing material for each prolonged track
4224 //-----------------------------------------------------------------
4225 fxOverX0PipeTrks = new Float_t[ntracks];
4226 fxTimesRhoPipeTrks = new Float_t[ntracks];
4227 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4228 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4229 fxOverX0LayerTrks = new Float_t[ntracks*6];
4230 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4232 for(Int_t i=0; i<ntracks; i++) {
4233 fxOverX0PipeTrks[i] = -1.;
4234 fxTimesRhoPipeTrks[i] = -1.;
4236 for(Int_t j=0; j<ntracks*2; j++) {
4237 fxOverX0ShieldTrks[j] = -1.;
4238 fxTimesRhoShieldTrks[j] = -1.;
4240 for(Int_t k=0; k<ntracks*6; k++) {
4241 fxOverX0LayerTrks[k] = -1.;
4242 fxTimesRhoLayerTrks[k] = -1.;
4249 //------------------------------------------------------------------------
4250 void AliITStrackerMI::DeleteTrksMaterialLUT() {
4251 //-----------------------------------------------------------------
4252 // Delete LUT for storing material for each prolonged track
4253 //-----------------------------------------------------------------
4254 if(fxOverX0PipeTrks) {
4255 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4257 if(fxOverX0ShieldTrks) {
4258 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4261 if(fxOverX0LayerTrks) {
4262 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4264 if(fxTimesRhoPipeTrks) {
4265 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4267 if(fxTimesRhoShieldTrks) {
4268 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4270 if(fxTimesRhoLayerTrks) {
4271 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4275 //------------------------------------------------------------------------
4276 Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
4277 Int_t ilayer,Int_t idet) const {
4278 //-----------------------------------------------------------------
4279 // This method is used to decide whether to allow a prolongation
4280 // without clusters, because we want to skip the layer.
4281 // In this case the return value is > 0:
4282 // return 1: the user requested to skip a layer
4283 // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
4284 //-----------------------------------------------------------------
4286 if (AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) return 1;
4288 if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4289 // check if track will cross SPD outer layer
4290 Double_t phiAtSPD2,zAtSPD2;
4291 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
4292 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4298 //------------------------------------------------------------------------
4299 Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
4300 Int_t ilayer,Int_t idet,
4301 Double_t dz,Double_t dy,
4302 Bool_t noClusters) const {
4303 //-----------------------------------------------------------------
4304 // This method is used to decide whether to allow a prolongation
4305 // without clusters, because there is a dead zone in the road.
4306 // In this case the return value is > 0:
4307 // return 1: dead zone at z=0,+-7cm in SPD
4308 // return 2: all road is "bad" (dead or noisy) from the OCDB
4309 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4310 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
4311 //-----------------------------------------------------------------
4313 // check dead zones at z=0,+-7cm in the SPD
4314 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4315 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4316 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4317 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4318 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4319 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4320 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4321 for (Int_t i=0; i<3; i++)
4322 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4323 AliDebug(2,Form("crack SPD %d",ilayer));
4328 // check bad zones from OCDB
4329 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
4331 if (idet<0) return 0;
4333 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4336 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4337 if (ilayer==0 || ilayer==1) { // ---------- SPD
4339 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4341 detSizeFactorX *= 2.;
4342 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4345 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
4346 if (detType==2) segm->SetLayer(ilayer+1);
4347 Float_t detSizeX = detSizeFactorX*segm->Dx();
4348 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4350 // check if the road overlaps with bad chips
4352 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
4353 Float_t zlocmin = zloc-dz;
4354 Float_t zlocmax = zloc+dz;
4355 Float_t xlocmin = xloc-dy;
4356 Float_t xlocmax = xloc+dy;
4357 Int_t chipsInRoad[100];
4359 // check if road goes out of detector
4360 Bool_t touchNeighbourDet=kFALSE;
4361 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.5*detSizeX; touchNeighbourDet=kTRUE;}
4362 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.5*detSizeX; touchNeighbourDet=kTRUE;}
4363 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4364 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.5*detSizeZ; touchNeighbourDet=kTRUE;}
4365 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));
4367 // check if this detector is bad
4369 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4370 if(!touchNeighbourDet) {
4371 return 2; // all detectors in road are bad
4373 return 3; // at least one is bad
4377 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4378 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
4379 if (!nChipsInRoad) return 0;
4381 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4382 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4383 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4384 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
4385 if (det.IsChipBad(chipsInRoad[iCh])) {
4393 if(!touchNeighbourDet) {
4394 AliDebug(2,"all bad in road");
4395 return 2; // all chips in road are bad
4397 return 3; // at least a bad chip in road
4402 AliDebug(2,"at least a bad in road");
4403 return 3; // at least a bad chip in road
4407 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
4408 || !noClusters) return 0;
4410 // There are no clusters in road: check if there is at least
4411 // a bad SPD pixel or SDD anode or SSD strips on both sides
4413 Int_t idetInITS=idet;
4414 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
4416 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4417 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
4420 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
4424 //------------------------------------------------------------------------
4425 Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
4426 const AliITStrackMI *track,
4427 Float_t &xloc,Float_t &zloc) const {
4428 //-----------------------------------------------------------------
4429 // Gives position of track in local module ref. frame
4430 //-----------------------------------------------------------------
4435 if(idet<0) return kFALSE;
4437 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4439 Int_t lad = Int_t(idet/ndet) + 1;
4441 Int_t det = idet - (lad-1)*ndet + 1;
4443 Double_t xyzGlob[3],xyzLoc[3];
4445 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4446 // take into account the misalignment: xyz at real detector plane
4447 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
4449 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
4451 xloc = (Float_t)xyzLoc[0];
4452 zloc = (Float_t)xyzLoc[2];
4456 //------------------------------------------------------------------------
4457 Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
4459 // Method to be optimized further:
4460 // Aim: decide whether a track can be used for PlaneEff evaluation
4461 // the decision is taken based on the track quality at the layer under study
4462 // no information on the clusters on this layer has to be used
4463 // The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4464 // the cut is done on number of sigmas from the boundaries
4466 // Input: Actual track, layer [0,5] under study
4468 // Return: kTRUE if this is a good track
4470 // it will apply a pre-selection to obtain good quality tracks.
4471 // Here also you will have the possibility to put a control on the
4472 // impact point of the track on the basic block, in order to exclude border regions
4473 // this will be done by calling a proper method of the AliITSPlaneEff class.
4475 // input: AliITStrackMI* track, ilayer= layer number [0,5]
4476 // return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
4478 Int_t index[AliITSgeomTGeo::kNLayers];
4480 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4482 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4483 index[k]=clusters[k];
4487 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
4488 AliITSlayer &layer=fgLayers[ilayer];
4489 Double_t r=layer.GetR();
4490 AliITStrackMI tmp(*track);
4492 // require a minimal number of cluster in other layers and eventually clusters in closest layers
4494 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
4495 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4496 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4497 if (tmp.GetClIndex(lay)>=0) ncl++;
4499 Bool_t nextout = kFALSE;
4500 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
4501 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
4502 Bool_t nextin = kFALSE;
4503 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4504 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4505 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4507 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4508 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4509 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4510 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4514 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4515 Int_t idet=layer.FindDetectorIndex(phi,z);
4516 if(idet<0) { AliInfo(Form("cannot find detector"));
4519 // here check if it has good Chi Square.
4521 //propagate to the intersection with the detector plane
4522 const AliITSdetector &det=layer.GetDetector(idet);
4523 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4527 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
4528 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4529 if(key>fPlaneEff->Nblock()) return kFALSE;
4530 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4531 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
4533 // DEFINITION OF SEARCH ROAD FOR accepting a track
4535 //For the time being they are hard-wired, later on from AliITSRecoParam
4536 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
4537 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
4540 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4541 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4542 // done for RecPoints
4544 // exclude tracks at boundary between detectors
4545 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
4546 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
4547 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
4548 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4549 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
4551 if ( (locx-dx < blockXmn+boundaryWidth) ||
4552 (locx+dx > blockXmx-boundaryWidth) ||
4553 (locz-dz < blockZmn+boundaryWidth) ||
4554 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
4557 //------------------------------------------------------------------------
4558 void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
4560 // This Method has to be optimized! For the time-being it uses the same criteria
4561 // as those used in the search of extra clusters for overlapping modules.
4563 // Method Purpose: estabilish whether a track has produced a recpoint or not
4564 // in the layer under study (For Plane efficiency)
4566 // inputs: AliITStrackMI* track (pointer to a usable track)
4568 // side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4569 // traversed by this very track. In details:
4570 // - if a cluster can be associated to the track then call
4571 // AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4572 // - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4575 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
4576 AliITSlayer &layer=fgLayers[ilayer];
4577 Double_t r=layer.GetR();
4578 AliITStrackMI tmp(*track);
4582 if (!tmp.GetPhiZat(r,phi,z)) return;
4583 Int_t idet=layer.FindDetectorIndex(phi,z);
4585 if(idet<0) { AliInfo(Form("cannot find detector"));
4589 //propagate to the intersection with the detector plane
4590 const AliITSdetector &det=layer.GetDetector(idet);
4591 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
4595 // DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4597 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4598 TMath::Sqrt(tmp.GetSigmaZ2() +
4599 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4600 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4601 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4602 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4603 TMath::Sqrt(tmp.GetSigmaY2() +
4604 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4605 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4606 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4608 // road in global (rphi,z) [i.e. in tracking ref. system]
4609 Double_t zmin = tmp.GetZ() - dz;
4610 Double_t zmax = tmp.GetZ() + dz;
4611 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4612 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4614 // select clusters in road
4615 layer.SelectClusters(zmin,zmax,ymin,ymax);
4617 // Define criteria for track-cluster association
4618 Double_t msz = tmp.GetSigmaZ2() +
4619 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4620 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4621 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4622 Double_t msy = tmp.GetSigmaY2() +
4623 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4624 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4625 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
4626 if (tmp.GetConstrain()) {
4627 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4628 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
4630 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4631 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4633 msz = 1./msz; // 1/RoadZ^2
4634 msy = 1./msy; // 1/RoadY^2
4637 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4639 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4640 //Double_t tolerance=0.2;
4641 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
4642 idetc = cl->GetDetectorIndex();
4643 if(idet!=idetc) continue;
4644 //Int_t ilay = cl->GetLayer();
4646 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4647 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4649 Double_t chi2=tmp.GetPredictedChi2(cl);
4650 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4654 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
4656 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4657 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4658 if(key>fPlaneEff->Nblock()) return;
4659 Bool_t found=kFALSE;
4662 while ((cl=layer.GetNextCluster(clidx))!=0) {
4663 idetc = cl->GetDetectorIndex();
4664 if(idet!=idetc) continue;
4665 // here real control to see whether the cluster can be associated to the track.
4666 // cluster not associated to track
4667 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4668 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4669 // calculate track-clusters chi2
4670 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4671 // in particular, the error associated to the cluster
4672 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4674 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
4676 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
4677 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4678 // track->SetExtraModule(ilayer,idetExtra);
4680 if(!fPlaneEff->UpDatePlaneEff(found,key))
4681 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
4682 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
4683 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4684 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4685 Int_t cltype[2]={-999,-999};
4689 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4690 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4693 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4694 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4695 cltype[0]=layer.GetCluster(ci)->GetNy();
4696 cltype[1]=layer.GetCluster(ci)->GetNz();
4698 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4699 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4700 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4701 // It is computed properly by calling the method
4702 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4704 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4705 //if (tmp.PropagateTo(x,0.,0.)) {
4706 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4707 AliCluster c(*layer.GetCluster(ci));
4708 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4709 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
4710 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
4711 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4712 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
4715 fPlaneEff->FillHistos(key,found,tr,clu,cltype);