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>
37 #include "AliITSPlaneEff.h"
38 #include "AliITSCalibrationSPD.h"
39 #include "AliITSCalibrationSDD.h"
40 #include "AliITSCalibrationSSD.h"
41 #include "AliCDBEntry.h"
42 #include "AliCDBManager.h"
43 #include "AliAlignObj.h"
44 #include "AliTrackPointArray.h"
45 #include "AliESDVertex.h"
46 #include "AliESDEvent.h"
47 #include "AliESDtrack.h"
50 #include "AliITSChannelStatus.h"
51 #include "AliITSDetTypeRec.h"
52 #include "AliITSRecPoint.h"
53 #include "AliITSRecPointContainer.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 fForceSkippingOfLayer[i] = 0;
189 } // end loop on layers
192 fI=AliITSgeomTGeo::GetNLayers();
195 fConstraint[0]=1; fConstraint[1]=0;
197 Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
198 AliITSReconstructor::GetRecoParam()->GetYVdef(),
199 AliITSReconstructor::GetRecoParam()->GetZVdef()};
200 Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
201 AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
202 AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
203 SetVertex(xyzVtx,ersVtx);
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::ReadBadFromDetTypeRec() {
313 //--------------------------------------------------------------------
314 //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
316 //--------------------------------------------------------------------
318 if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
320 Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
322 if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
325 if(fITSChannelStatus) delete fITSChannelStatus;
326 fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
328 // ITS detectors and chips
329 Int_t i=0,j=0,k=0,ndet=0;
330 for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
331 Int_t nBadDetsPerLayer=0;
332 ndet=AliITSgeomTGeo::GetNDetectors(i);
333 for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
334 for (k=1; k<ndet+1; k++) {
335 AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
336 det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
337 if(det.IsBad()) {nBadDetsPerLayer++;}
338 } // end loop on detectors
339 } // end loop on ladders
340 Info("ReadBadFromDetTypeRec",Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
341 } // end loop on layers
345 //------------------------------------------------------------------------
346 Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
347 //--------------------------------------------------------------------
348 //This function loads ITS clusters
349 //--------------------------------------------------------------------
351 TClonesArray *clusters = NULL;
352 AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
353 clusters=rpcont->FetchClusters(0,cTree);
354 if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
355 AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
358 Int_t i=0,j=0,ndet=0;
360 for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
361 ndet=fgLayers[i].GetNdetectors();
362 Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
363 for (; j<jmax; j++) {
364 // if (!cTree->GetEvent(j)) continue;
365 clusters = rpcont->UncheckedGetClusters(j);
366 if(!clusters)continue;
367 Int_t ncl=clusters->GetEntriesFast();
368 SignDeltas(clusters,GetZ());
371 AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
372 detector=c->GetDetectorIndex();
374 if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
376 Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
378 AliWarning(Form("Too many clusters on layer %d!",i));
383 // add dead zone "virtual" cluster in SPD, if there is a cluster within
384 // zwindow cm from the dead zone
385 if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
386 for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
387 Int_t lab[4] = {0,0,0,detector};
388 Int_t info[3] = {0,0,i};
389 Float_t q = 0.; // this identifies virtual clusters
390 Float_t hit[5] = {xdead,
392 AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
393 AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
395 Bool_t local = kTRUE;
396 Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
397 hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
398 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
399 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
400 hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
401 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
402 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
403 hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
404 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
405 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
406 hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
407 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
408 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
409 hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
410 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
411 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
412 hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
413 if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
414 fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
416 } // "virtual" clusters in SPD
420 fgLayers[i].ResetRoad(); //road defined by the cluster density
421 fgLayers[i].SortClusters();
424 // check whether we have to skip some layers
425 SetForceSkippingOfLayer();
429 //------------------------------------------------------------------------
430 void AliITStrackerMI::UnloadClusters() {
431 //--------------------------------------------------------------------
432 //This function unloads ITS clusters
433 //--------------------------------------------------------------------
434 for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
436 //------------------------------------------------------------------------
437 void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
438 //--------------------------------------------------------------------
439 // Publishes all pointers to clusters known to the tracker into the
440 // passed object array.
441 // The ownership is not transfered - the caller is not expected to delete
443 //--------------------------------------------------------------------
445 for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
446 for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
447 AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
454 //------------------------------------------------------------------------
455 Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
456 //--------------------------------------------------------------------
457 // Correction for the material between the TPC and the ITS
458 //--------------------------------------------------------------------
459 if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
460 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
461 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
462 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
463 } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
464 if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
465 if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
466 if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
468 printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
474 //------------------------------------------------------------------------
475 Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
476 //--------------------------------------------------------------------
477 // This functions reconstructs ITS tracks
478 // The clusters must be already loaded !
479 //--------------------------------------------------------------------
481 AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
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();
504 // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
506 AliESDtrack *esd=event->GetTrack(nentr);
507 // ---- for debugging:
508 //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
510 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
511 if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
512 if (esd->GetStatus()&AliESDtrack::kITSin) continue;
513 if (esd->GetKinkIndex(0)>0) continue; //kink daughter
516 t=new AliITStrackMI(*esd);
517 } catch (const Char_t *msg) {
518 //Warning("Clusters2Tracks",msg);
522 t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
523 Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
526 // look at the ESD mass hypothesys !
527 if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
529 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
531 if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
532 //track - can be V0 according to TPC
534 if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
538 if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
542 if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
546 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
551 t->SetReconstructed(kFALSE);
552 itsTracks.AddLast(t);
553 fOriginal.AddLast(t);
555 } /* End Read ESD tracks */
559 Int_t nentr=itsTracks.GetEntriesFast();
560 fTrackHypothesys.Expand(nentr);
561 fBestHypothesys.Expand(nentr);
562 MakeCoefficients(nentr);
563 if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
565 // THE TWO TRACKING PASSES
566 for (fPass=0; fPass<2; fPass++) {
567 Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
568 for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
569 AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
570 if (t==0) continue; //this track has been already tracked
571 //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
572 if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
573 Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
574 if (fConstraint[fPass]) {
575 if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
576 TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
579 Int_t tpcLabel=t->GetLabel(); //save the TPC track label
580 AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
582 ResetTrackToFollow(*t);
585 FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
588 SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
590 AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
591 if (!besttrack) continue;
592 besttrack->SetLabel(tpcLabel);
593 // besttrack->CookdEdx();
595 besttrack->SetFakeRatio(1.);
596 CookLabel(besttrack,0.); //For comparison only
597 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
599 if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
601 t->SetReconstructed(kTRUE);
603 AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
605 GetBestHypothesysMIP(itsTracks);
606 } // end loop on the two tracking passes
608 if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
609 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
614 Int_t entries = fTrackHypothesys.GetEntriesFast();
615 for (Int_t ientry=0; ientry<entries; ientry++) {
616 TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
617 if (array) array->Delete();
618 delete fTrackHypothesys.RemoveAt(ientry);
621 fTrackHypothesys.Delete();
622 fBestHypothesys.Delete();
624 delete [] fCoefficients;
626 DeleteTrksMaterialLUT();
628 AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
630 fTrackingPhase="Default";
634 //------------------------------------------------------------------------
635 Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
636 //--------------------------------------------------------------------
637 // This functions propagates reconstructed ITS tracks back
638 // The clusters must be loaded !
639 //--------------------------------------------------------------------
640 fTrackingPhase="PropagateBack";
641 Int_t nentr=event->GetNumberOfTracks();
642 // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
645 for (Int_t i=0; i<nentr; i++) {
646 AliESDtrack *esd=event->GetTrack(i);
648 if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
649 if (esd->GetStatus()&AliESDtrack::kITSout) continue;
653 t=new AliITStrackMI(*esd);
654 } catch (const Char_t *msg) {
655 //Warning("PropagateBack",msg);
659 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
661 ResetTrackToFollow(*t);
664 // propagate to vertex [SR, GSI 17.02.2003]
665 // Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
666 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
667 if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
668 fTrackToFollow.StartTimeIntegral();
669 // from vertex to outside pipe
670 CorrectForPipeMaterial(&fTrackToFollow,"outward");
672 // Start time integral and add distance from current position to vertex
673 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
674 fTrackToFollow.GetXYZ(xyzTrk);
676 for (Int_t icoord=0; icoord<3; icoord++) {
677 Double_t di = xyzTrk[icoord] - xyzVtx[icoord];
680 fTrackToFollow.StartTimeIntegral();
681 fTrackToFollow.AddTimeStep(TMath::Sqrt(dst2));
683 fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
684 if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
685 if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
689 fTrackToFollow.SetLabel(t->GetLabel());
690 //fTrackToFollow.CookdEdx();
691 CookLabel(&fTrackToFollow,0.); //For comparison only
692 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
693 //UseClusters(&fTrackToFollow);
699 AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
701 fTrackingPhase="Default";
705 //------------------------------------------------------------------------
706 Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
707 //--------------------------------------------------------------------
708 // This functions refits ITS tracks using the
709 // "inward propagated" TPC tracks
710 // The clusters must be loaded !
711 //--------------------------------------------------------------------
712 fTrackingPhase="RefitInward";
714 if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
716 Int_t nentr=event->GetNumberOfTracks();
717 // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
720 for (Int_t i=0; i<nentr; i++) {
721 AliESDtrack *esd=event->GetTrack(i);
723 if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
724 if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
725 if (esd->GetStatus()&AliESDtrack::kTPCout)
726 if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
730 t=new AliITStrackMI(*esd);
731 } catch (const Char_t *msg) {
732 //Warning("RefitInward",msg);
736 t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
737 if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
742 ResetTrackToFollow(*t);
743 fTrackToFollow.ResetClusters();
745 if ((esd->GetStatus()&AliESDtrack::kTPCin)==0)
746 fTrackToFollow.ResetCovariance(10.);
749 Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
750 AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
752 AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
753 if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
754 AliDebug(2," refit OK");
755 fTrackToFollow.SetLabel(t->GetLabel());
756 // fTrackToFollow.CookdEdx();
757 CookdEdx(&fTrackToFollow);
759 CookLabel(&fTrackToFollow,0.0); //For comparison only
762 if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
763 fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
764 AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
765 //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
766 //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
767 Double_t r[3]={0.,0.,0.};
769 esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
776 AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
778 fTrackingPhase="Default";
782 //------------------------------------------------------------------------
783 AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
784 //--------------------------------------------------------------------
785 // Return pointer to a given cluster
786 //--------------------------------------------------------------------
787 Int_t l=(index & 0xf0000000) >> 28;
788 Int_t c=(index & 0x0fffffff) >> 00;
789 return fgLayers[l].GetCluster(c);
791 //------------------------------------------------------------------------
792 Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
793 //--------------------------------------------------------------------
794 // Get track space point with index i
795 //--------------------------------------------------------------------
797 Int_t l=(index & 0xf0000000) >> 28;
798 Int_t c=(index & 0x0fffffff) >> 00;
799 AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
800 Int_t idet = cl->GetDetectorIndex();
804 cl->GetGlobalXYZ(xyz);
805 cl->GetGlobalCov(cov);
807 p.SetCharge(cl->GetQ());
808 p.SetDriftTime(cl->GetDriftTime());
809 p.SetChargeRatio(cl->GetChargeRatio());
810 p.SetClusterType(cl->GetClusterType());
811 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
814 iLayer = AliGeomManager::kSPD1;
817 iLayer = AliGeomManager::kSPD2;
820 iLayer = AliGeomManager::kSDD1;
823 iLayer = AliGeomManager::kSDD2;
826 iLayer = AliGeomManager::kSSD1;
829 iLayer = AliGeomManager::kSSD2;
832 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
835 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
836 p.SetVolumeID((UShort_t)volid);
839 //------------------------------------------------------------------------
840 Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
841 AliTrackPoint& p, const AliESDtrack *t) {
842 //--------------------------------------------------------------------
843 // Get track space point with index i
844 // (assign error estimated during the tracking)
845 //--------------------------------------------------------------------
847 Int_t l=(index & 0xf0000000) >> 28;
848 Int_t c=(index & 0x0fffffff) >> 00;
849 const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
850 Int_t idet = cl->GetDetectorIndex();
852 const AliITSdetector &det=fgLayers[l].GetDetector(idet);
854 // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
856 detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
857 detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
858 Double_t alpha = t->GetAlpha();
859 Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
860 Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,GetBz()));
861 phi += alpha-det.GetPhi();
862 Float_t tgphi = TMath::Tan(phi);
864 Float_t tgl = t->GetTgl(); // tgl about const along track
865 Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
867 Float_t errtrky,errtrkz,covyz;
868 Bool_t addMisalErr=kFALSE;
869 AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
873 cl->GetGlobalXYZ(xyz);
874 // cl->GetGlobalCov(cov);
875 Float_t pos[3] = {0.,0.,0.};
876 AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
877 tmpcl.GetGlobalCov(cov);
880 p.SetCharge(cl->GetQ());
881 p.SetDriftTime(cl->GetDriftTime());
882 p.SetChargeRatio(cl->GetChargeRatio());
883 p.SetClusterType(cl->GetClusterType());
885 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
888 iLayer = AliGeomManager::kSPD1;
891 iLayer = AliGeomManager::kSPD2;
894 iLayer = AliGeomManager::kSDD1;
897 iLayer = AliGeomManager::kSDD2;
900 iLayer = AliGeomManager::kSSD1;
903 iLayer = AliGeomManager::kSSD2;
906 AliWarning(Form("Wrong layer index in ITS (%d) !",l));
909 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
911 p.SetVolumeID((UShort_t)volid);
914 //------------------------------------------------------------------------
915 void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
917 //--------------------------------------------------------------------
918 // Follow prolongation tree
919 //--------------------------------------------------------------------
921 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
922 Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
925 AliESDtrack * esd = otrack->GetESDtrack();
926 if (esd->GetV0Index(0)>0) {
927 // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
928 // mapping of ESD track is different as ITS track in Containers
929 // Need something more stable
930 // Indexes are set back again to the ESD track indexes in UpdateTPCV0
931 for (Int_t i=0;i<3;i++){
932 Int_t index = esd->GetV0Index(i);
934 AliESDv0 * vertex = fEsd->GetV0(index);
935 if (vertex->GetStatus()<0) continue; // rejected V0
937 if (esd->GetSign()>0) {
938 vertex->SetIndex(0,esdindex);
940 vertex->SetIndex(1,esdindex);
944 TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
946 bestarray = new TObjArray(5);
947 fBestHypothesys.AddAt(bestarray,esdindex);
951 //setup tree of the prolongations
953 static AliITStrackMI tracks[7][100];
954 AliITStrackMI *currenttrack;
955 static AliITStrackMI currenttrack1;
956 static AliITStrackMI currenttrack2;
957 static AliITStrackMI backuptrack;
959 Int_t nindexes[7][100];
960 Float_t normalizedchi2[100];
961 for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
962 otrack->SetNSkipped(0);
963 new (&(tracks[6][0])) AliITStrackMI(*otrack);
965 for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
966 Int_t modstatus = 1; // found
970 // follow prolongations
971 for (Int_t ilayer=5; ilayer>=0; ilayer--) {
972 AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
975 AliITSlayer &layer=fgLayers[ilayer];
976 Double_t r = layer.GetR();
982 for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
984 if (ntracks[ilayer]>=100) break;
985 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
986 if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
987 if (ntracks[ilayer]>15+ilayer){
988 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
989 if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
992 new(¤ttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
994 // material between SSD and SDD, SDD and SPD
996 if(!CorrectForShieldMaterial(¤ttrack1,"SDD","inward")) continue;
998 if(!CorrectForShieldMaterial(¤ttrack1,"SPD","inward")) continue;
1002 if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
1003 Int_t idet=layer.FindDetectorIndex(phi,z);
1005 Double_t trackGlobXYZ1[3];
1006 if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
1008 // Get the budget to the primary vertex for the current track being prolonged
1009 Double_t budgetToPrimVertex = GetEffectiveThickness();
1011 // check if we allow a prolongation without point
1012 Int_t skip = CheckSkipLayer(¤ttrack1,ilayer,idet);
1014 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1015 // propagate to the layer radius
1016 Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
1017 if(!vtrack->Propagate(xToGo)) continue;
1018 // apply correction for material of the current layer
1019 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1020 vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
1021 vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
1022 vtrack->SetClIndex(ilayer,-1);
1023 modstatus = (skip==1 ? 3 : 4); // skipped : out in z
1024 if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
1025 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1027 if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1032 // track outside layer acceptance in z
1033 if (idet<0) continue;
1035 //propagate to the intersection with the detector plane
1036 const AliITSdetector &det=layer.GetDetector(idet);
1037 new(¤ttrack2) AliITStrackMI(currenttrack1);
1038 if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
1039 if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
1040 currenttrack1.SetDetectorIndex(idet);
1041 currenttrack2.SetDetectorIndex(idet);
1042 if(!LocalModuleCoord(ilayer,idet,¤ttrack1,xloc,zloc)) continue; // local module coords
1045 // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
1047 // road in global (rphi,z) [i.e. in tracking ref. system]
1048 Double_t zmin,zmax,ymin,ymax;
1049 if (!ComputeRoad(¤ttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
1051 // select clusters in road
1052 layer.SelectClusters(zmin,zmax,ymin,ymax);
1053 //********************
1055 // Define criteria for track-cluster association
1056 Double_t msz = currenttrack1.GetSigmaZ2() +
1057 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1058 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1059 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
1060 Double_t msy = currenttrack1.GetSigmaY2() +
1061 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1062 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1063 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
1065 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
1066 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
1068 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
1069 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
1071 msz = 1./msz; // 1/RoadZ^2
1072 msy = 1./msy; // 1/RoadY^2
1076 // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
1078 const AliITSRecPoint *cl=0;
1080 Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
1081 Bool_t deadzoneSPD=kFALSE;
1082 currenttrack = ¤ttrack1;
1084 // check if the road contains a dead zone
1085 Bool_t noClusters = kFALSE;
1086 if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
1087 if (noClusters) AliDebug(2,"no clusters in road");
1088 Double_t dz=0.5*(zmax-zmin);
1089 Double_t dy=0.5*(ymax-ymin);
1090 Int_t dead = CheckDeadZone(¤ttrack1,ilayer,idet,dz,dy,noClusters);
1091 if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
1092 // create a prolongation without clusters (check also if there are no clusters in the road)
1095 AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
1096 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1097 updatetrack->SetClIndex(ilayer,-1);
1099 modstatus = 5; // no cls in road
1100 } else if (dead==1) {
1101 modstatus = 7; // holes in z in SPD
1102 } else if (dead==2 || dead==3 || dead==4) {
1103 modstatus = 2; // dead from OCDB
1105 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1106 // apply correction for material of the current layer
1107 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1108 if (constrain) { // apply vertex constrain
1109 updatetrack->SetConstrain(constrain);
1110 Bool_t isPrim = kTRUE;
1111 if (ilayer<4) { // check that it's close to the vertex
1112 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1113 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1114 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1115 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1116 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1118 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1120 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1122 if (dead==1) { // dead zone at z=0,+-7cm in SPD
1123 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1125 } else if (dead==2 || dead==3) { // dead module or chip from OCDB
1126 updatetrack->SetDeadZoneProbability(ilayer,1.);
1127 } else if (dead==4) { // at least a single dead channel from OCDB
1128 updatetrack->SetDeadZoneProbability(ilayer,0.);
1135 // loop over clusters in the road
1136 while ((cl=layer.GetNextCluster(clidx))!=0) {
1137 if (ntracks[ilayer]>95) break; //space for skipped clusters
1138 Bool_t changedet =kFALSE;
1139 if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
1140 Int_t idetc=cl->GetDetectorIndex();
1142 if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
1143 // take into account misalignment (bring track to real detector plane)
1144 Double_t xTrOrig = currenttrack->GetX();
1145 if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
1146 // a first cut on track-cluster distance
1147 if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
1148 (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
1149 { // cluster not associated to track
1150 AliDebug(2,"not associated");
1153 // bring track back to ideal detector plane
1154 if (!currenttrack->Propagate(xTrOrig)) continue;
1155 } else { // have to move track to cluster's detector
1156 const AliITSdetector &detc=layer.GetDetector(idetc);
1157 // a first cut on track-cluster distance
1159 if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
1160 if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
1161 (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
1162 continue; // cluster not associated to track
1164 new (&backuptrack) AliITStrackMI(currenttrack2);
1166 currenttrack =¤ttrack2;
1167 if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
1168 new (currenttrack) AliITStrackMI(backuptrack);
1172 currenttrack->SetDetectorIndex(idetc);
1173 // Get again the budget to the primary vertex
1174 // for the current track being prolonged, if had to change detector
1175 //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
1178 // calculate track-clusters chi2
1179 chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
1181 AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
1182 if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
1183 if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
1184 if (ntracks[ilayer]>=100) continue;
1185 AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
1186 updatetrack->SetClIndex(ilayer,-1);
1187 if (changedet) new (¤ttrack2) AliITStrackMI(backuptrack);
1189 if (cl->GetQ()!=0) { // real cluster
1190 if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
1191 AliDebug(2,"update failed");
1194 updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
1195 modstatus = 1; // found
1196 } else { // virtual cluster in dead zone
1197 updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
1198 updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
1199 modstatus = 7; // holes in z in SPD
1203 Float_t xlocnewdet,zlocnewdet;
1204 if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
1205 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
1208 updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1210 if (cl->IsUsed()) updatetrack->IncrementNUsed();
1212 // apply correction for material of the current layer
1213 CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
1215 if (constrain) { // apply vertex constrain
1216 updatetrack->SetConstrain(constrain);
1217 Bool_t isPrim = kTRUE;
1218 if (ilayer<4) { // check that it's close to the vertex
1219 updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
1220 if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
1221 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
1222 TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
1223 AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
1225 if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1226 } //apply vertex constrain
1228 } // create new hypothesis
1230 AliDebug(2,"chi2 too large");
1233 } // loop over possible prolongations
1235 // allow one prolongation without clusters
1236 if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
1237 AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
1238 // apply correction for material of the current layer
1239 CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
1240 vtrack->SetClIndex(ilayer,-1);
1241 modstatus = 3; // skipped
1242 vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
1243 vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
1244 vtrack->IncrementNSkipped();
1249 } // loop over tracks in layer ilayer+1
1251 //loop over track candidates for the current layer
1257 for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
1258 normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
1259 if (normalizedchi2[itrack] <
1260 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
1264 if (constrain) { // constrain
1265 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
1267 } else { // !constrain
1268 if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
1273 // sort tracks by increasing normalized chi2
1274 TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
1275 ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
1276 if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
1277 if (ntracks[ilayer]>90) ntracks[ilayer]=90;
1278 } // end loop over layers
1282 // Now select tracks to be kept
1284 Int_t max = constrain ? 20 : 5;
1286 // tracks that reach layer 0 (SPD inner)
1287 for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
1288 AliITStrackMI & track= tracks[0][nindexes[0][i]];
1289 if (track.GetNumberOfClusters()<2) continue;
1290 if (!constrain && track.GetNormChi2(0) >
1291 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
1294 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1297 // tracks that reach layer 1 (SPD outer)
1298 for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
1299 AliITStrackMI & track= tracks[1][nindexes[1][i]];
1300 if (track.GetNumberOfClusters()<4) continue;
1301 if (!constrain && track.GetNormChi2(1) >
1302 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1303 if (constrain) track.IncrementNSkipped();
1305 track.SetD(0,track.GetD(GetX(),GetY()));
1306 track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
1307 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1308 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1311 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1314 // tracks that reach layer 2 (SDD inner), only during non-constrained pass
1316 for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
1317 AliITStrackMI & track= tracks[2][nindexes[2][i]];
1318 if (track.GetNumberOfClusters()<3) continue;
1319 if (!constrain && track.GetNormChi2(2) >
1320 AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
1321 if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
1323 track.SetD(0,track.GetD(GetX(),GetY()));
1324 track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
1325 if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
1326 track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
1329 AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1335 // register best track of each layer - important for V0 finder
1337 for (Int_t ilayer=0;ilayer<5;ilayer++){
1338 if (ntracks[ilayer]==0) continue;
1339 AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
1340 if (track.GetNumberOfClusters()<1) continue;
1341 CookLabel(&track,0);
1342 bestarray->AddAt(new AliITStrackMI(track),ilayer);
1346 // update TPC V0 information
1348 if (otrack->GetESDtrack()->GetV0Index(0)>0){
1349 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
1350 for (Int_t i=0;i<3;i++){
1351 Int_t index = otrack->GetESDtrack()->GetV0Index(i);
1352 if (index==0) break;
1353 AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
1354 if (vertex->GetStatus()<0) continue; // rejected V0
1356 if (otrack->GetSign()>0) {
1357 vertex->SetIndex(0,esdindex);
1360 vertex->SetIndex(1,esdindex);
1362 //find nearest layer with track info
1363 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
1364 Int_t nearestold = GetNearestLayer(xrp); //I.B.
1365 Int_t nearest = nearestold;
1366 for (Int_t ilayer =nearest;ilayer<8;ilayer++){
1367 if (ntracks[nearest]==0){
1372 AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
1373 if (nearestold<5&&nearest<5){
1374 Bool_t accept = track.GetNormChi2(nearest)<10;
1376 if (track.GetSign()>0) {
1377 vertex->SetParamP(track);
1378 vertex->Update(fprimvertex);
1379 //vertex->SetIndex(0,track.fESDtrack->GetID());
1380 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1382 vertex->SetParamN(track);
1383 vertex->Update(fprimvertex);
1384 //vertex->SetIndex(1,track.fESDtrack->GetID());
1385 if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
1387 vertex->SetStatus(vertex->GetStatus()+1);
1389 //vertex->SetStatus(-2); // reject V0 - not enough clusters
1396 //------------------------------------------------------------------------
1397 AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
1399 //--------------------------------------------------------------------
1402 return fgLayers[layer];
1404 //------------------------------------------------------------------------
1405 AliITStrackerMI::AliITSlayer::AliITSlayer():
1435 //--------------------------------------------------------------------
1436 //default AliITSlayer constructor
1437 //--------------------------------------------------------------------
1438 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1439 fClusterWeight[i]=0;
1440 fClusterTracks[0][i]=-1;
1441 fClusterTracks[1][i]=-1;
1442 fClusterTracks[2][i]=-1;
1443 fClusterTracks[3][i]=-1;
1446 //------------------------------------------------------------------------
1447 AliITStrackerMI::AliITSlayer::
1448 AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
1477 //--------------------------------------------------------------------
1478 //main AliITSlayer constructor
1479 //--------------------------------------------------------------------
1480 fDetectors=new AliITSdetector[fNladders*fNdetectors];
1481 fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
1483 //------------------------------------------------------------------------
1484 AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
1486 fPhiOffset(layer.fPhiOffset),
1487 fNladders(layer.fNladders),
1488 fZOffset(layer.fZOffset),
1489 fNdetectors(layer.fNdetectors),
1490 fDetectors(layer.fDetectors),
1495 fClustersCs(layer.fClustersCs),
1496 fClusterIndexCs(layer.fClusterIndexCs),
1500 fCurrentSlice(layer.fCurrentSlice),
1508 fAccepted(layer.fAccepted),
1510 fMaxSigmaClY(layer.fMaxSigmaClY),
1511 fMaxSigmaClZ(layer.fMaxSigmaClZ),
1512 fNMaxSigmaCl(layer.fNMaxSigmaCl)
1516 //------------------------------------------------------------------------
1517 AliITStrackerMI::AliITSlayer::~AliITSlayer() {
1518 //--------------------------------------------------------------------
1519 // AliITSlayer destructor
1520 //--------------------------------------------------------------------
1521 delete [] fDetectors;
1522 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1523 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1524 fClusterWeight[i]=0;
1525 fClusterTracks[0][i]=-1;
1526 fClusterTracks[1][i]=-1;
1527 fClusterTracks[2][i]=-1;
1528 fClusterTracks[3][i]=-1;
1531 //------------------------------------------------------------------------
1532 void AliITStrackerMI::AliITSlayer::ResetClusters() {
1533 //--------------------------------------------------------------------
1534 // This function removes loaded clusters
1535 //--------------------------------------------------------------------
1536 for (Int_t i=0; i<fN; i++) delete fClusters[i];
1537 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
1538 fClusterWeight[i]=0;
1539 fClusterTracks[0][i]=-1;
1540 fClusterTracks[1][i]=-1;
1541 fClusterTracks[2][i]=-1;
1542 fClusterTracks[3][i]=-1;
1548 //------------------------------------------------------------------------
1549 void AliITStrackerMI::AliITSlayer::ResetWeights() {
1550 //--------------------------------------------------------------------
1551 // This function reset weights of the clusters
1552 //--------------------------------------------------------------------
1553 for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
1554 fClusterWeight[i]=0;
1555 fClusterTracks[0][i]=-1;
1556 fClusterTracks[1][i]=-1;
1557 fClusterTracks[2][i]=-1;
1558 fClusterTracks[3][i]=-1;
1560 for (Int_t i=0; i<fN;i++) {
1561 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
1562 if (cl&&cl->IsUsed()) cl->Use();
1566 //------------------------------------------------------------------------
1567 void AliITStrackerMI::AliITSlayer::ResetRoad() {
1568 //--------------------------------------------------------------------
1569 // This function calculates the road defined by the cluster density
1570 //--------------------------------------------------------------------
1572 for (Int_t i=0; i<fN; i++) {
1573 if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
1575 if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
1577 //------------------------------------------------------------------------
1578 Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
1579 //--------------------------------------------------------------------
1580 //This function adds a cluster to this layer
1581 //--------------------------------------------------------------------
1582 if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
1588 AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
1590 Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
1591 Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
1592 if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
1593 if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
1594 if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
1595 if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
1598 if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
1599 if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
1600 if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
1601 if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
1605 //------------------------------------------------------------------------
1606 void AliITStrackerMI::AliITSlayer::SortClusters()
1611 AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
1612 Float_t *z = new Float_t[fN];
1613 Int_t * index = new Int_t[fN];
1615 fMaxSigmaClY=0.; //AD
1616 fMaxSigmaClZ=0.; //AD
1618 for (Int_t i=0;i<fN;i++){
1619 z[i] = fClusters[i]->GetZ();
1620 // save largest errors in y and z for this layer
1621 fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
1622 fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
1624 TMath::Sort(fN,z,index,kFALSE);
1625 for (Int_t i=0;i<fN;i++){
1626 clusters[i] = fClusters[index[i]];
1629 for (Int_t i=0;i<fN;i++){
1630 fClusters[i] = clusters[i];
1631 fZ[i] = fClusters[i]->GetZ();
1632 AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
1633 Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
1634 if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
1644 for (Int_t i=0;i<fN;i++){
1645 if (fY[i]<fYB[0]) fYB[0]=fY[i];
1646 if (fY[i]>fYB[1]) fYB[1]=fY[i];
1647 fClusterIndex[i] = i;
1651 fDy5 = (fYB[1]-fYB[0])/5.;
1652 fDy10 = (fYB[1]-fYB[0])/10.;
1653 fDy20 = (fYB[1]-fYB[0])/20.;
1654 for (Int_t i=0;i<6;i++) fN5[i] =0;
1655 for (Int_t i=0;i<11;i++) fN10[i]=0;
1656 for (Int_t i=0;i<21;i++) fN20[i]=0;
1658 for (Int_t i=0;i<6;i++) {fBy5[i][0] = fYB[0]+(i-0.75)*fDy5; fBy5[i][1] = fYB[0]+(i+0.75)*fDy5;}
1659 for (Int_t i=0;i<11;i++) {fBy10[i][0] = fYB[0]+(i-0.75)*fDy10; fBy10[i][1] = fYB[0]+(i+0.75)*fDy10;}
1660 for (Int_t i=0;i<21;i++) {fBy20[i][0] = fYB[0]+(i-0.75)*fDy20; fBy20[i][1] = fYB[0]+(i+0.75)*fDy20;}
1663 for (Int_t i=0;i<fN;i++)
1664 for (Int_t irot=-1;irot<=1;irot++){
1665 Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
1667 for (Int_t slice=0; slice<6;slice++){
1668 if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
1669 fClusters5[slice][fN5[slice]] = fClusters[i];
1670 fY5[slice][fN5[slice]] = curY;
1671 fZ5[slice][fN5[slice]] = fZ[i];
1672 fClusterIndex5[slice][fN5[slice]]=i;
1677 for (Int_t slice=0; slice<11;slice++){
1678 if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
1679 fClusters10[slice][fN10[slice]] = fClusters[i];
1680 fY10[slice][fN10[slice]] = curY;
1681 fZ10[slice][fN10[slice]] = fZ[i];
1682 fClusterIndex10[slice][fN10[slice]]=i;
1687 for (Int_t slice=0; slice<21;slice++){
1688 if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
1689 fClusters20[slice][fN20[slice]] = fClusters[i];
1690 fY20[slice][fN20[slice]] = curY;
1691 fZ20[slice][fN20[slice]] = fZ[i];
1692 fClusterIndex20[slice][fN20[slice]]=i;
1699 // consistency check
1701 for (Int_t i=0;i<fN-1;i++){
1707 for (Int_t slice=0;slice<21;slice++)
1708 for (Int_t i=0;i<fN20[slice]-1;i++){
1709 if (fZ20[slice][i]>fZ20[slice][i+1]){
1716 //------------------------------------------------------------------------
1717 Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
1718 //--------------------------------------------------------------------
1719 // This function returns the index of the nearest cluster
1720 //--------------------------------------------------------------------
1723 if (fCurrentSlice<0) {
1732 if (ncl==0) return 0;
1733 Int_t b=0, e=ncl-1, m=(b+e)/2;
1734 for (; b<e; m=(b+e)/2) {
1735 // if (z > fClusters[m]->GetZ()) b=m+1;
1736 if (z > zcl[m]) b=m+1;
1741 //------------------------------------------------------------------------
1742 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 {
1743 //--------------------------------------------------------------------
1744 // This function computes the rectangular road for this track
1745 //--------------------------------------------------------------------
1748 AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
1749 // take into account the misalignment: propagate track to misaligned detector plane
1750 if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
1752 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
1753 TMath::Sqrt(track->GetSigmaZ2() +
1754 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1755 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
1756 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
1757 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
1758 TMath::Sqrt(track->GetSigmaY2() +
1759 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1760 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
1761 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
1763 // track at boundary between detectors, enlarge road
1764 Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
1765 if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
1766 (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
1767 (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
1768 (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
1769 Float_t tgl = TMath::Abs(track->GetTgl());
1770 if (tgl > 1.) tgl=1.;
1771 Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
1772 dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
1773 Float_t snp = TMath::Abs(track->GetSnp());
1774 if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
1775 dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
1778 // add to the road a term (up to 2-3 mm) to deal with misalignments
1779 dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1780 dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
1782 Double_t r = fgLayers[ilayer].GetR();
1783 zmin = track->GetZ() - dz;
1784 zmax = track->GetZ() + dz;
1785 ymin = track->GetY() + r*det.GetPhi() - dy;
1786 ymax = track->GetY() + r*det.GetPhi() + dy;
1788 // bring track back to idead detector plane
1789 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
1793 //------------------------------------------------------------------------
1794 void AliITStrackerMI::AliITSlayer::
1795 SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
1796 //--------------------------------------------------------------------
1797 // This function sets the "window"
1798 //--------------------------------------------------------------------
1800 Double_t circle=2*TMath::Pi()*fR;
1806 // enlarge road in y by maximum cluster error on this layer (3 sigma)
1807 fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
1808 fYmax += fNMaxSigmaCl*fMaxSigmaClY;
1809 fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
1810 fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
1812 Float_t ymiddle = (fYmin+fYmax)*0.5;
1813 if (ymiddle<fYB[0]) {
1814 fYmin+=circle; fYmax+=circle; ymiddle+=circle;
1815 } else if (ymiddle>fYB[1]) {
1816 fYmin-=circle; fYmax-=circle; ymiddle-=circle;
1822 fClustersCs = fClusters;
1823 fClusterIndexCs = fClusterIndex;
1829 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
1830 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
1831 if (slice<0) slice=0;
1832 if (slice>20) slice=20;
1833 Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
1835 fCurrentSlice=slice;
1836 fClustersCs = fClusters20[fCurrentSlice];
1837 fClusterIndexCs = fClusterIndex20[fCurrentSlice];
1838 fYcs = fY20[fCurrentSlice];
1839 fZcs = fZ20[fCurrentSlice];
1840 fNcs = fN20[fCurrentSlice];
1845 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
1846 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
1847 if (slice<0) slice=0;
1848 if (slice>10) slice=10;
1849 Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
1851 fCurrentSlice=slice;
1852 fClustersCs = fClusters10[fCurrentSlice];
1853 fClusterIndexCs = fClusterIndex10[fCurrentSlice];
1854 fYcs = fY10[fCurrentSlice];
1855 fZcs = fZ10[fCurrentSlice];
1856 fNcs = fN10[fCurrentSlice];
1861 if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
1862 Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
1863 if (slice<0) slice=0;
1864 if (slice>5) slice=5;
1865 Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
1867 fCurrentSlice=slice;
1868 fClustersCs = fClusters5[fCurrentSlice];
1869 fClusterIndexCs = fClusterIndex5[fCurrentSlice];
1870 fYcs = fY5[fCurrentSlice];
1871 fZcs = fZ5[fCurrentSlice];
1872 fNcs = fN5[fCurrentSlice];
1876 fI = FindClusterIndex(fZmin);
1877 fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
1883 //------------------------------------------------------------------------
1884 Int_t AliITStrackerMI::AliITSlayer::
1885 FindDetectorIndex(Double_t phi, Double_t z) const {
1886 //--------------------------------------------------------------------
1887 //This function finds the detector crossed by the track
1888 //--------------------------------------------------------------------
1890 if (fZOffset<0) // old geometry
1891 dphi = -(phi-fPhiOffset);
1892 else // new geometry
1893 dphi = phi-fPhiOffset;
1896 if (dphi < 0) dphi += 2*TMath::Pi();
1897 else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
1898 Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
1899 if (np>=fNladders) np-=fNladders;
1900 if (np<0) np+=fNladders;
1903 Double_t dz=fZOffset-z;
1904 Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
1905 Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
1906 if (nz>=fNdetectors) return -1;
1907 if (nz<0) return -1;
1909 // ad hoc correction for 3rd ladder of SDD inner layer,
1910 // which is reversed (rotated by pi around local y)
1911 // this correction is OK only from AliITSv11Hybrid onwards
1912 if (GetR()>12. && GetR()<20.) { // SDD inner
1913 if(np==2) { // 3rd ladder
1914 Double_t posMod252[3];
1915 AliITSgeomTGeo::GetTranslation(252,posMod252);
1916 // check the Z coordinate of Mod 252: if negative
1917 // (old SDD geometry in AliITSv11Hybrid)
1918 // the swap of numeration whould be applied
1919 if(posMod252[2]<0.){
1920 nz = (fNdetectors-1) - nz;
1924 //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
1927 return np*fNdetectors + nz;
1929 //------------------------------------------------------------------------
1930 const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
1932 //--------------------------------------------------------------------
1933 // This function returns clusters within the "window"
1934 //--------------------------------------------------------------------
1936 if (fCurrentSlice<0) {
1937 Double_t rpi2 = 2.*fR*TMath::Pi();
1938 for (Int_t i=fI; i<fImax; i++) {
1941 if (fYmax<y) y -= rpi2;
1942 if (fYmin>y) y += rpi2;
1943 if (y<fYmin) continue;
1944 if (y>fYmax) continue;
1946 // skip clusters that are in "extended" road but they
1947 // 3sigma error does not touch the original road
1948 if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
1949 if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
1951 if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
1954 return fClusters[i];
1957 for (Int_t i=fI; i<fImax; i++) {
1958 if (fYcs[i]<fYmin) continue;
1959 if (fYcs[i]>fYmax) continue;
1960 if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
1961 ci=fClusterIndexCs[i];
1963 return fClustersCs[i];
1968 //------------------------------------------------------------------------
1969 Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
1971 //--------------------------------------------------------------------
1972 // This function returns the layer thickness at this point (units X0)
1973 //--------------------------------------------------------------------
1975 x0=AliITSRecoParam::GetX0Air();
1976 if (43<fR&&fR<45) { //SSD2
1979 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1980 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
1981 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
1982 for (Int_t i=0; i<12; i++) {
1983 if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
1984 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1988 if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
1989 if (TMath::Abs(y-0.00)>3.40) d+=dd;
1993 if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1994 if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
1997 if (37<fR&&fR<41) { //SSD1
2000 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2001 if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
2002 if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
2003 for (Int_t i=0; i<11; i++) {
2004 if (TMath::Abs(z-3.9*i)<0.15) {
2005 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2009 if (TMath::Abs(z+3.9*i)<0.15) {
2010 if (TMath::Abs(y-0.00)>3.40) d+=dd;
2014 if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2015 if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
2018 if (13<fR&&fR<26) { //SDD
2021 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2023 if (TMath::Abs(y-1.80)<0.55) {
2025 for (Int_t j=0; j<20; j++) {
2026 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2027 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2030 if (TMath::Abs(y+1.80)<0.55) {
2032 for (Int_t j=0; j<20; j++) {
2033 if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2034 if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
2038 for (Int_t i=0; i<4; i++) {
2039 if (TMath::Abs(z-7.3*i)<0.60) {
2041 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2044 if (TMath::Abs(z+7.3*i)<0.60) {
2046 if (TMath::Abs(y-0.00)>3.30) d+=dd;
2051 if (6<fR&&fR<8) { //SPD2
2052 Double_t dd=0.0063; x0=21.5;
2054 if (TMath::Abs(y-3.08)>0.5) d+=dd;
2055 if (TMath::Abs(y-3.03)<0.10) d+=0.014;
2057 if (3<fR&&fR<5) { //SPD1
2058 Double_t dd=0.0063; x0=21.5;
2060 if (TMath::Abs(y+0.21)>0.6) d+=dd;
2061 if (TMath::Abs(y+0.10)<0.10) d+=0.014;
2066 //------------------------------------------------------------------------
2067 AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
2069 fRmisal(det.fRmisal),
2071 fSinPhi(det.fSinPhi),
2072 fCosPhi(det.fCosPhi),
2078 fNChips(det.fNChips),
2079 fChipIsBad(det.fChipIsBad)
2083 //------------------------------------------------------------------------
2084 void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
2085 const AliITSDetTypeRec *detTypeRec)
2087 //--------------------------------------------------------------------
2088 // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
2089 //--------------------------------------------------------------------
2091 // In AliITSDetTypeRec, detector numbers go from 0 to 2197
2092 // while in the tracker they start from 0 for each layer
2093 for(Int_t il=0; il<ilayer; il++)
2094 idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
2097 if (ilayer==0 || ilayer==1) { // ---------- SPD
2099 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
2101 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
2104 printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
2108 // Get calibration from AliITSDetTypeRec
2109 AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
2110 calib->SetModuleIndex(idet);
2111 AliITSCalibration *calibSPDdead = 0;
2112 if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
2113 if (calib->IsBad() ||
2114 (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
2117 // printf("lay %d bad %d\n",ilayer,idet);
2120 // Get segmentation from AliITSDetTypeRec
2121 AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
2123 // Read info about bad chips
2124 fNChips = segm->GetMaximumChipIndex()+1;
2125 //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
2126 if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
2127 fChipIsBad = new Bool_t[fNChips];
2128 for (Int_t iCh=0;iCh<fNChips;iCh++) {
2129 fChipIsBad[iCh] = calib->IsChipBad(iCh);
2130 if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
2131 //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
2136 //------------------------------------------------------------------------
2137 Double_t AliITStrackerMI::GetEffectiveThickness()
2139 //--------------------------------------------------------------------
2140 // Returns the thickness between the current layer and the vertex (units X0)
2141 //--------------------------------------------------------------------
2144 if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
2145 if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
2146 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
2150 Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
2151 Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
2155 Double_t xn=fgLayers[fI].GetR();
2156 for (Int_t i=0; i<fI; i++) {
2157 Double_t xi=fgLayers[i].GetR();
2158 Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
2164 Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
2165 d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
2168 Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
2169 d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
2173 //------------------------------------------------------------------------
2174 Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
2175 //-------------------------------------------------------------------
2176 // This function returns number of clusters within the "window"
2177 //--------------------------------------------------------------------
2179 for (Int_t i=fI; i<fN; i++) {
2180 const AliITSRecPoint *c=fClusters[i];
2181 if (c->GetZ() > fZmax) break;
2182 if (c->IsUsed()) continue;
2183 const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
2184 Double_t y=fR*det.GetPhi() + c->GetY();
2186 if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
2187 if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
2189 if (y<fYmin) continue;
2190 if (y>fYmax) continue;
2195 //------------------------------------------------------------------------
2196 Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2197 const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
2199 //--------------------------------------------------------------------
2200 // This function refits the track "track" at the position "x" using
2201 // the clusters from "clusters"
2202 // If "extra"==kTRUE,
2203 // the clusters from overlapped modules get attached to "track"
2204 // If "planeff"==kTRUE,
2205 // special approach for plane efficiency evaluation is applyed
2206 //--------------------------------------------------------------------
2208 Int_t index[AliITSgeomTGeo::kNLayers];
2210 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2211 Int_t nc=clusters->GetNumberOfClusters();
2212 for (k=0; k<nc; k++) {
2213 Int_t idx=clusters->GetClusterIndex(k);
2214 Int_t ilayer=(idx&0xf0000000)>>28;
2218 return RefitAt(xx,track,index,extra,planeeff); // call the method below
2220 //------------------------------------------------------------------------
2221 Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
2222 const Int_t *clusters,Bool_t extra, Bool_t planeeff)
2224 //--------------------------------------------------------------------
2225 // This function refits the track "track" at the position "x" using
2226 // the clusters from array
2227 // If "extra"==kTRUE,
2228 // the clusters from overlapped modules get attached to "track"
2229 // If "planeff"==kTRUE,
2230 // special approach for plane efficiency evaluation is applyed
2231 //--------------------------------------------------------------------
2232 Int_t index[AliITSgeomTGeo::kNLayers];
2234 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
2236 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
2237 index[k]=clusters[k];
2240 // special for cosmics: check which the innermost layer crossed
2242 Int_t innermostlayer=5;
2243 Double_t drphi = TMath::Abs(track->GetD(0.,0.));
2244 for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
2245 if(drphi < fgLayers[innermostlayer].GetR()) break;
2247 AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
2249 Int_t modstatus=1; // found
2251 Int_t from, to, step;
2252 if (xx > track->GetX()) {
2253 from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
2256 from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
2259 TString dir = (step>0 ? "outward" : "inward");
2261 for (Int_t ilayer = from; ilayer != to; ilayer += step) {
2262 AliITSlayer &layer=fgLayers[ilayer];
2263 Double_t r=layer.GetR();
2265 if (step<0 && xx>r) break;
2267 // material between SSD and SDD, SDD and SPD
2268 Double_t hI=ilayer-0.5*step;
2269 if (TMath::Abs(hI-3.5)<0.01) // SDDouter
2270 if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
2271 if (TMath::Abs(hI-1.5)<0.01) // SPDouter
2272 if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
2275 Double_t oldGlobXYZ[3];
2276 if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
2278 // continue if we are already beyond this layer
2279 Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
2280 if(step>0 && oldGlobR > r) continue; // going outward
2281 if(step<0 && oldGlobR < r) continue; // going inward
2284 if (!track->GetPhiZat(r,phi,z)) return kFALSE;
2286 Int_t idet=layer.FindDetectorIndex(phi,z);
2288 // check if we allow a prolongation without point for large-eta tracks
2289 Int_t skip = CheckSkipLayer(track,ilayer,idet);
2291 modstatus = 4; // out in z
2292 if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
2293 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2296 // apply correction for material of the current layer
2297 // add time if going outward
2298 CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
2302 if (idet<0) return kFALSE;
2305 const AliITSdetector &det=layer.GetDetector(idet);
2306 if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
2308 track->SetDetectorIndex(idet);
2309 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2311 Double_t dz,zmin,zmax,dy,ymin,ymax;
2313 const AliITSRecPoint *clAcc=0;
2314 Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2316 Int_t idx=index[ilayer];
2317 if (idx>=0) { // cluster in this layer
2318 modstatus = 6; // no refit
2319 const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
2321 if (idet != cl->GetDetectorIndex()) {
2322 idet=cl->GetDetectorIndex();
2323 const AliITSdetector &detc=layer.GetDetector(idet);
2324 if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
2325 track->SetDetectorIndex(idet);
2326 if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
2328 Int_t cllayer = (idx & 0xf0000000) >> 28;;
2329 Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
2333 modstatus = 1; // found
2338 } else { // no cluster in this layer
2340 modstatus = 3; // skipped
2341 // Plane Eff determination:
2342 if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
2343 if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
2344 UseTrackForPlaneEff(track,ilayer);
2347 modstatus = 5; // no cls in road
2349 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2350 dz = 0.5*(zmax-zmin);
2351 dy = 0.5*(ymax-ymin);
2352 Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
2353 if (dead==1) modstatus = 7; // holes in z in SPD
2354 if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
2359 if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
2360 track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
2362 track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
2365 if (extra) { // search for extra clusters in overlapped modules
2366 AliITStrackV2 tmp(*track);
2367 if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
2368 layer.SelectClusters(zmin,zmax,ymin,ymax);
2370 const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
2372 maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
2373 Double_t tolerance=0.1;
2374 while ((clExtra=layer.GetNextCluster(ci))!=0) {
2375 // only clusters in another module! (overlaps)
2376 idetExtra = clExtra->GetDetectorIndex();
2377 if (idet == idetExtra) continue;
2379 const AliITSdetector &detx=layer.GetDetector(idetExtra);
2381 if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
2382 if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
2383 if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
2384 if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
2386 Double_t chi2=tmp.GetPredictedChi2(clExtra);
2387 if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
2390 track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
2391 track->SetExtraModule(ilayer,idetExtra);
2393 } // end search for extra clusters in overlapped modules
2395 // Correct for material of the current layer
2397 // add time if going outward
2398 if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
2400 } // end loop on layers
2402 if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
2406 //------------------------------------------------------------------------
2407 Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
2410 // calculate normalized chi2
2411 // return NormalizedChi2(track,0);
2414 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2415 // track->fdEdxMismatch=0;
2416 Float_t dedxmismatch =0;
2417 Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
2419 for (Int_t i = 0;i<6;i++){
2420 if (track->GetClIndex(i)>=0){
2421 Float_t cerry, cerrz;
2422 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2424 { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2427 Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
2428 if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
2429 Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
2431 cchi2+=(0.5-ratio)*10.;
2432 //track->fdEdxMismatch+=(0.5-ratio)*10.;
2433 dedxmismatch+=(0.5-ratio)*10.;
2437 AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
2438 Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
2439 if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
2440 if (i<2) chi2+=2*cl->GetDeltaProbability();
2446 if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
2447 track->SetdEdxMismatch(dedxmismatch);
2451 for (Int_t i = 0;i<4;i++){
2452 if (track->GetClIndex(i)>=0){
2453 Float_t cerry, cerrz;
2454 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2455 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2458 chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
2459 chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
2463 for (Int_t i = 4;i<6;i++){
2464 if (track->GetClIndex(i)>=0){
2465 Float_t cerry, cerrz;
2466 if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
2467 else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
2470 Float_t cerryb, cerrzb;
2471 if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
2472 else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
2475 chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
2476 chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
2481 if (track->GetESDtrack()->GetTPCsignal()>85){
2482 Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
2484 chi2+=(0.5-ratio)*5.;
2487 chi2+=(ratio-2.0)*3;
2491 Double_t match = TMath::Sqrt(track->GetChi22());
2492 if (track->GetConstrain()) match/=track->GetNumberOfClusters();
2493 if (!track->GetConstrain()) {
2494 if (track->GetNumberOfClusters()>2) {
2495 match/=track->GetNumberOfClusters()-2.;
2500 if (match<0) match=0;
2502 // penalty factor for missing points (NDeadZone>0), but no penalty
2503 // for layer with deadZoneProb close to 1 (either we wanted to skip layer
2504 // or there is a dead from OCDB)
2505 Float_t deadzonefactor = 0.;
2506 if (track->GetNDeadZone()>0.) {
2507 Float_t sumDeadZoneProbability=0;
2508 for(Int_t ilay=0;ilay<6;ilay++) sumDeadZoneProbability+=track->GetDeadZoneProbability(ilay);
2509 Float_t nDeadZoneWithProbNot1=(Float_t)(track->GetNDeadZone())-sumDeadZoneProbability;
2510 if(nDeadZoneWithProbNot1>0.) {
2511 Float_t deadZoneProbability = sumDeadZoneProbability - (Float_t)((Int_t)sumDeadZoneProbability);
2512 deadZoneProbability /= nDeadZoneWithProbNot1;
2513 deadzonefactor = 3.*(1.1-deadZoneProbability);
2517 Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
2518 (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
2519 1./(1.+track->GetNSkipped()));
2523 //------------------------------------------------------------------------
2524 Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
2527 // return matching chi2 between two tracks
2528 Double_t largeChi2=1000.;
2530 AliITStrackMI track3(*track2);
2531 if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
2533 vec(0,0)=track1->GetY() - track3.GetY();
2534 vec(1,0)=track1->GetZ() - track3.GetZ();
2535 vec(2,0)=track1->GetSnp() - track3.GetSnp();
2536 vec(3,0)=track1->GetTgl() - track3.GetTgl();
2537 vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
2540 cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
2541 cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
2542 cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
2543 cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
2544 cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
2546 cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
2547 cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
2548 cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
2549 cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
2551 cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
2552 cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
2553 cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
2555 cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
2556 cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
2558 cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
2561 TMatrixD vec2(cov,TMatrixD::kMult,vec);
2562 TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
2565 //------------------------------------------------------------------------
2566 Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
2569 // return probability that given point (characterized by z position and error)
2570 // is in SPD dead zone
2572 Double_t probability = 0.;
2573 Double_t absz = TMath::Abs(zpos);
2574 Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
2575 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
2576 if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
2577 Double_t zmin, zmax;
2578 if (zpos<-6.) { // dead zone at z = -7
2579 zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2580 zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2581 } else if (zpos>6.) { // dead zone at z = +7
2582 zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2583 zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2584 } else if (absz<2.) { // dead zone at z = 0
2585 zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
2586 zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
2591 // probability that the true z is in the range [zmin,zmax] (i.e. inside
2593 probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
2594 TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
2597 //------------------------------------------------------------------------
2598 Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
2601 // calculate normalized chi2
2603 Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
2605 for (Int_t i = 0;i<6;i++){
2606 if (TMath::Abs(track->GetDy(i))>0){
2607 chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
2608 chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
2611 else{chi2[i]=10000;}
2614 TMath::Sort(6,chi2,index,kFALSE);
2615 Float_t max = float(ncl)*fac-1.;
2616 Float_t sumchi=0, sumweight=0;
2617 for (Int_t i=0;i<max+1;i++){
2618 Float_t weight = (i<max)?1.:(max+1.-i);
2619 sumchi+=weight*chi2[index[i]];
2622 Double_t normchi2 = sumchi/sumweight;
2625 //------------------------------------------------------------------------
2626 Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
2629 // calculate normalized chi2
2630 // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
2633 for (Int_t i=0;i<6;i++){
2634 if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
2635 Double_t sy1 = forwardtrack->GetSigmaY(i);
2636 Double_t sz1 = forwardtrack->GetSigmaZ(i);
2637 Double_t sy2 = backtrack->GetSigmaY(i);
2638 Double_t sz2 = backtrack->GetSigmaZ(i);
2639 if (i<2){ sy2=1000.;sz2=1000;}
2641 Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
2642 Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
2644 Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
2645 Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
2647 res+= nz0*nz0+ny0*ny0;
2650 if (npoints>1) return
2651 TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
2652 //2*forwardtrack->fNUsed+
2653 res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
2654 1./(1.+forwardtrack->GetNSkipped()));
2657 //------------------------------------------------------------------------
2658 Float_t *AliITStrackerMI::GetWeight(Int_t index) {
2659 //--------------------------------------------------------------------
2660 // Return pointer to a given cluster
2661 //--------------------------------------------------------------------
2662 Int_t l=(index & 0xf0000000) >> 28;
2663 Int_t c=(index & 0x0fffffff) >> 00;
2664 return fgLayers[l].GetWeight(c);
2666 //------------------------------------------------------------------------
2667 void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
2669 //---------------------------------------------
2670 // register track to the list
2672 if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
2675 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2676 Int_t index = track->GetClusterIndex(icluster);
2677 Int_t l=(index & 0xf0000000) >> 28;
2678 Int_t c=(index & 0x0fffffff) >> 00;
2679 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2680 for (Int_t itrack=0;itrack<4;itrack++){
2681 if (fgLayers[l].GetClusterTracks(itrack,c)<0){
2682 fgLayers[l].SetClusterTracks(itrack,c,id);
2688 //------------------------------------------------------------------------
2689 void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
2691 //---------------------------------------------
2692 // unregister track from the list
2693 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2694 Int_t index = track->GetClusterIndex(icluster);
2695 Int_t l=(index & 0xf0000000) >> 28;
2696 Int_t c=(index & 0x0fffffff) >> 00;
2697 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2698 for (Int_t itrack=0;itrack<4;itrack++){
2699 if (fgLayers[l].GetClusterTracks(itrack,c)==id){
2700 fgLayers[l].SetClusterTracks(itrack,c,-1);
2705 //------------------------------------------------------------------------
2706 Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
2708 //-------------------------------------------------------------
2709 //get number of shared clusters
2710 //-------------------------------------------------------------
2712 for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
2713 // mean number of clusters
2714 Float_t *ny = GetNy(id), *nz = GetNz(id);
2717 for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
2718 Int_t index = track->GetClusterIndex(icluster);
2719 Int_t l=(index & 0xf0000000) >> 28;
2720 Int_t c=(index & 0x0fffffff) >> 00;
2721 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2723 printf("problem\n");
2725 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2729 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
2730 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2731 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
2733 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2736 deltan = (cl->GetNz()-nz[l]);
2738 if (deltan>2.0) continue; // extended - highly probable shared cluster
2739 weight = 2./TMath::Max(3.+deltan,2.);
2741 for (Int_t itrack=0;itrack<4;itrack++){
2742 if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
2744 clist[l] = (AliITSRecPoint*)GetCluster(index);
2750 track->SetNUsed(shared);
2753 //------------------------------------------------------------------------
2754 Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
2757 // find first shared track
2759 // mean number of clusters
2760 Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
2762 for (Int_t i=0;i<6;i++) overlist[i]=-1;
2763 Int_t sharedtrack=100000;
2764 Int_t tracks[24],trackindex=0;
2765 for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
2767 for (Int_t icluster=0;icluster<6;icluster++){
2768 if (clusterlist[icluster]<0) continue;
2769 Int_t index = clusterlist[icluster];
2770 Int_t l=(index & 0xf0000000) >> 28;
2771 Int_t c=(index & 0x0fffffff) >> 00;
2773 printf("problem\n");
2775 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2776 //if (l>3) continue;
2777 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2780 if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
2781 if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
2782 if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
2784 deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
2787 deltan = (cl->GetNz()-nz[l]);
2789 if (deltan>2.0) continue; // extended - highly probable shared cluster
2791 for (Int_t itrack=3;itrack>=0;itrack--){
2792 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2793 if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
2794 tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
2799 if (trackindex==0) return -1;
2801 sharedtrack = tracks[0];
2803 if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
2806 Int_t tracks2[24], cluster[24];
2807 for (Int_t i=0;i<trackindex;i++){ tracks2[i]=-1; cluster[i]=0;}
2810 for (Int_t i=0;i<trackindex;i++){
2811 if (tracks[i]<0) continue;
2812 tracks2[index] = tracks[i];
2814 for (Int_t j=i+1;j<trackindex;j++){
2815 if (tracks[j]<0) continue;
2816 if (tracks[j]==tracks[i]){
2824 for (Int_t i=0;i<index;i++){
2825 if (cluster[index]>max) {
2826 sharedtrack=tracks2[index];
2833 if (sharedtrack>=100000) return -1;
2835 // make list of overlaps
2837 for (Int_t icluster=0;icluster<6;icluster++){
2838 if (clusterlist[icluster]<0) continue;
2839 Int_t index = clusterlist[icluster];
2840 Int_t l=(index & 0xf0000000) >> 28;
2841 Int_t c=(index & 0x0fffffff) >> 00;
2842 if (c>fgLayers[l].GetNumberOfClusters()) continue;
2843 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
2845 if (cl->GetNy()>2) continue;
2846 if (cl->GetNz()>2) continue;
2849 if (cl->GetNy()>3) continue;
2850 if (cl->GetNz()>3) continue;
2853 for (Int_t itrack=3;itrack>=0;itrack--){
2854 if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
2855 if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
2863 //------------------------------------------------------------------------
2864 AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
2866 // try to find track hypothesys without conflicts
2867 // with minimal chi2;
2868 TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
2869 Int_t entries1 = arr1->GetEntriesFast();
2870 TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
2871 if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
2872 Int_t entries2 = arr2->GetEntriesFast();
2873 if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
2875 AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
2876 AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
2877 if (track10->Pt()>0.5+track20->Pt()) return track10;
2879 for (Int_t itrack=0;itrack<entries1;itrack++){
2880 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
2881 UnRegisterClusterTracks(track,trackID1);
2884 for (Int_t itrack=0;itrack<entries2;itrack++){
2885 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
2886 UnRegisterClusterTracks(track,trackID2);
2890 Float_t maxconflicts=6;
2891 Double_t maxchi2 =1000.;
2893 // get weight of hypothesys - using best hypothesy
2896 Int_t list1[6],list2[6];
2897 AliITSRecPoint *clist1[6], *clist2[6] ;
2898 RegisterClusterTracks(track10,trackID1);
2899 RegisterClusterTracks(track20,trackID2);
2900 Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
2901 Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
2902 UnRegisterClusterTracks(track10,trackID1);
2903 UnRegisterClusterTracks(track20,trackID2);
2906 Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
2907 Float_t nerry[6],nerrz[6];
2908 Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
2909 Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
2910 for (Int_t i=0;i<6;i++){
2911 if ( (erry1[i]>0) && (erry2[i]>0)) {
2912 nerry[i] = TMath::Min(erry1[i],erry2[i]);
2913 nerrz[i] = TMath::Min(errz1[i],errz2[i]);
2915 nerry[i] = TMath::Max(erry1[i],erry2[i]);
2916 nerrz[i] = TMath::Max(errz1[i],errz2[i]);
2918 if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
2919 chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
2920 chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
2923 if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
2924 chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
2925 chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
2933 Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
2934 Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
2935 Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
2936 Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
2938 w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
2939 +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
2940 +1.*track10->Pt()/(track10->Pt()+track20->Pt())
2942 w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
2943 s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
2944 +1.*track20->Pt()/(track10->Pt()+track20->Pt())
2947 Double_t sumw = w1+w2;
2951 w1 = (d2+0.5)/(d1+d2+1.);
2952 w2 = (d1+0.5)/(d1+d2+1.);
2954 // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
2955 //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
2957 // get pair of "best" hypothesys
2959 Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
2960 Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
2962 for (Int_t itrack1=0;itrack1<entries1;itrack1++){
2963 AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
2964 //if (track1->fFakeRatio>0) continue;
2965 RegisterClusterTracks(track1,trackID1);
2966 for (Int_t itrack2=0;itrack2<entries2;itrack2++){
2967 AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
2969 // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
2970 //if (track2->fFakeRatio>0) continue;
2972 RegisterClusterTracks(track2,trackID2);
2973 Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
2974 Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
2975 UnRegisterClusterTracks(track2,trackID2);
2977 if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
2978 if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
2979 if (nskipped>0.5) continue;
2981 //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
2982 if (conflict1+1<cconflict1) continue;
2983 if (conflict2+1<cconflict2) continue;
2987 for (Int_t i=0;i<6;i++){
2989 Float_t c1 =0.; // conflict coeficients
2991 if (clist1[i]&&clist2[i]){
2994 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
2997 deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
2999 c1 = 2./TMath::Max(3.+deltan,2.);
3000 c2 = 2./TMath::Max(3.+deltan,2.);
3006 deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
3009 deltan = (clist1[i]->GetNz()-nz1[i]);
3011 c1 = 2./TMath::Max(3.+deltan,2.);
3018 deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
3021 deltan = (clist2[i]->GetNz()-nz2[i]);
3023 c2 = 2./TMath::Max(3.+deltan,2.);
3029 if (TMath::Abs(track1->GetDy(i))>0.) {
3030 chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
3031 (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
3032 //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
3033 // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
3035 if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
3038 if (TMath::Abs(track2->GetDy(i))>0.) {
3039 chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
3040 (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
3041 //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
3042 // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
3045 if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
3047 sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
3048 if (chi21>0) sum+=w1;
3049 if (chi22>0) sum+=w2;
3052 Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
3053 if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
3054 Double_t normchi2 = 2*conflict+sumchi2/sum;
3055 if ( normchi2 <maxchi2 ){
3058 maxconflicts = conflict;
3062 UnRegisterClusterTracks(track1,trackID1);
3065 // if (maxconflicts<4 && maxchi2<th0){
3066 if (maxchi2<th0*2.){
3067 Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
3068 AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
3069 track1->SetChi2MIP(5,maxconflicts);
3070 track1->SetChi2MIP(6,maxchi2);
3071 track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
3072 // track1->UpdateESDtrack(AliESDtrack::kITSin);
3073 track1->SetChi2MIP(8,index1);
3074 fBestTrackIndex[trackID1] =index1;
3075 UpdateESDtrack(track1, AliESDtrack::kITSin);
3077 else if (track10->GetChi2MIP(0)<th1){
3078 track10->SetChi2MIP(5,maxconflicts);
3079 track10->SetChi2MIP(6,maxchi2);
3080 // track10->UpdateESDtrack(AliESDtrack::kITSin);
3081 UpdateESDtrack(track10,AliESDtrack::kITSin);
3084 for (Int_t itrack=0;itrack<entries1;itrack++){
3085 AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
3086 UnRegisterClusterTracks(track,trackID1);
3089 for (Int_t itrack=0;itrack<entries2;itrack++){
3090 AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
3091 UnRegisterClusterTracks(track,trackID2);
3094 if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3095 &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3096 // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3097 // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3098 RegisterClusterTracks(track10,trackID1);
3100 if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3101 &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3102 //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3103 // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3104 RegisterClusterTracks(track20,trackID2);
3109 //------------------------------------------------------------------------
3110 void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
3111 //--------------------------------------------------------------------
3112 // This function marks clusters assigned to the track
3113 //--------------------------------------------------------------------
3114 AliTracker::UseClusters(t,from);
3116 AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
3117 //if (c->GetQ()>2) c->Use();
3118 if (c->GetSigmaZ2()>0.1) c->Use();
3119 c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
3120 //if (c->GetQ()>2) c->Use();
3121 if (c->GetSigmaZ2()>0.1) c->Use();
3124 //------------------------------------------------------------------------
3125 void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
3127 //------------------------------------------------------------------
3128 // add track to the list of hypothesys
3129 //------------------------------------------------------------------
3131 if (esdindex>=fTrackHypothesys.GetEntriesFast())
3132 fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
3134 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3136 array = new TObjArray(10);
3137 fTrackHypothesys.AddAt(array,esdindex);
3139 array->AddLast(track);
3141 //------------------------------------------------------------------------
3142 void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
3144 //-------------------------------------------------------------------
3145 // compress array of track hypothesys
3146 // keep only maxsize best hypothesys
3147 //-------------------------------------------------------------------
3148 if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
3149 if (! (fTrackHypothesys.At(esdindex)) ) return;
3150 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3151 Int_t entries = array->GetEntriesFast();
3153 //- find preliminary besttrack as a reference
3154 Float_t minchi2=10000;
3156 AliITStrackMI * besttrack=0;
3157 for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
3158 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3159 if (!track) continue;
3160 Float_t chi2 = NormalizedChi2(track,0);
3162 Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
3163 track->SetLabel(tpcLabel);
3165 track->SetFakeRatio(1.);
3166 CookLabel(track,0.); //For comparison only
3168 //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
3169 if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3170 if (track->GetNumberOfClusters()<maxn) continue;
3171 maxn = track->GetNumberOfClusters();
3178 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3179 delete array->RemoveAt(itrack);
3183 if (!besttrack) return;
3186 //take errors of best track as a reference
3187 Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
3188 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3189 for (Int_t j=0;j<6;j++) {
3190 if (besttrack->GetClIndex(j)>=0){
3191 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3192 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3193 ny[j] = besttrack->GetNy(j);
3194 nz[j] = besttrack->GetNz(j);
3198 // calculate normalized chi2
3200 Float_t * chi2 = new Float_t[entries];
3201 Int_t * index = new Int_t[entries];
3202 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3203 for (Int_t itrack=0;itrack<entries;itrack++){
3204 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3206 track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
3207 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
3208 chi2[itrack] = track->GetChi2MIP(0);
3210 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3211 delete array->RemoveAt(itrack);
3217 TMath::Sort(entries,chi2,index,kFALSE);
3218 besttrack = (AliITStrackMI*)array->At(index[0]);
3219 if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
3220 for (Int_t j=0;j<6;j++){
3221 if (besttrack->GetClIndex(j)>=0){
3222 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3223 errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3224 ny[j] = besttrack->GetNy(j);
3225 nz[j] = besttrack->GetNz(j);
3230 // calculate one more time with updated normalized errors
3231 for (Int_t i=0;i<entries;i++) chi2[i] =10000;
3232 for (Int_t itrack=0;itrack<entries;itrack++){
3233 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3235 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3236 if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
3237 chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
3240 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3241 delete array->RemoveAt(itrack);
3246 entries = array->GetEntriesFast();
3250 TObjArray * newarray = new TObjArray();
3251 TMath::Sort(entries,chi2,index,kFALSE);
3252 besttrack = (AliITStrackMI*)array->At(index[0]);
3255 for (Int_t j=0;j<6;j++){
3256 if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
3257 erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
3258 errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
3259 ny[j] = besttrack->GetNy(j);
3260 nz[j] = besttrack->GetNz(j);
3263 besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
3264 minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
3265 Float_t minn = besttrack->GetNumberOfClusters()-3;
3267 for (Int_t i=0;i<entries;i++){
3268 AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
3269 if (!track) continue;
3270 if (accepted>maxcut) break;
3271 track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
3272 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3273 if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
3274 delete array->RemoveAt(index[i]);
3278 Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
3279 if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
3280 if (!shortbest) accepted++;
3282 newarray->AddLast(array->RemoveAt(index[i]));
3283 for (Int_t j=0;j<6;j++){
3285 erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
3286 errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
3287 ny[j] = track->GetNy(j);
3288 nz[j] = track->GetNz(j);
3293 delete array->RemoveAt(index[i]);
3297 delete fTrackHypothesys.RemoveAt(esdindex);
3298 fTrackHypothesys.AddAt(newarray,esdindex);
3302 delete fTrackHypothesys.RemoveAt(esdindex);
3308 //------------------------------------------------------------------------
3309 AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
3311 //-------------------------------------------------------------
3312 // try to find best hypothesy
3313 // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
3314 //-------------------------------------------------------------
3315 if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
3316 TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
3317 if (!array) return 0;
3318 Int_t entries = array->GetEntriesFast();
3319 if (!entries) return 0;
3320 Float_t minchi2 = 100000;
3321 AliITStrackMI * besttrack=0;
3323 AliITStrackMI * backtrack = new AliITStrackMI(*original);
3324 AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
3325 Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
3326 Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
3328 for (Int_t i=0;i<entries;i++){
3329 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3330 if (!track) continue;
3331 Float_t sigmarfi,sigmaz;
3332 GetDCASigma(track,sigmarfi,sigmaz);
3333 track->SetDnorm(0,sigmarfi);
3334 track->SetDnorm(1,sigmaz);
3336 track->SetChi2MIP(1,1000000);
3337 track->SetChi2MIP(2,1000000);
3338 track->SetChi2MIP(3,1000000);
3341 backtrack = new(backtrack) AliITStrackMI(*track);
3342 if (track->GetConstrain()) {
3343 if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
3344 if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
3345 backtrack->ResetCovariance(10.);
3347 backtrack->ResetCovariance(10.);
3349 backtrack->ResetClusters();
3351 Double_t x = original->GetX();
3352 if (!RefitAt(x,backtrack,track)) continue;
3354 track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
3355 //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
3356 if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
3357 track->SetChi22(GetMatchingChi2(backtrack,original));
3359 if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
3360 if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
3361 if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
3364 if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
3366 //forward track - without constraint
3367 forwardtrack = new(forwardtrack) AliITStrackMI(*original);
3368 forwardtrack->ResetClusters();
3370 RefitAt(x,forwardtrack,track);
3371 track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
3372 if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
3373 if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
3375 //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
3376 //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3377 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
3378 forwardtrack->SetD(0,track->GetD(0));
3379 forwardtrack->SetD(1,track->GetD(1));
3382 AliITSRecPoint* clist[6];
3383 track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
3384 if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
3387 track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
3388 if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
3389 if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
3390 track->SetChi2MIP(3,1000);
3393 Double_t chi2 = track->GetChi2MIP(0)+track->GetNUsed();
3395 for (Int_t ichi=0;ichi<5;ichi++){
3396 forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
3398 if (chi2 < minchi2){
3399 //besttrack = new AliITStrackMI(*forwardtrack);
3401 besttrack->SetLabel(track->GetLabel());
3402 besttrack->SetFakeRatio(track->GetFakeRatio());
3404 //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
3405 //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
3406 forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
3410 delete forwardtrack;
3412 for (Int_t i=0;i<entries;i++){
3413 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3415 if (!track) continue;
3417 if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
3418 (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
3419 track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
3420 if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
3421 delete array->RemoveAt(i);
3431 SortTrackHypothesys(esdindex,checkmax,1);
3433 array = (TObjArray*) fTrackHypothesys.At(esdindex);
3434 if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
3435 besttrack = (AliITStrackMI*)array->At(0);
3436 if (!besttrack) return 0;
3437 besttrack->SetChi2MIP(8,0);
3438 fBestTrackIndex[esdindex]=0;
3439 entries = array->GetEntriesFast();
3440 AliITStrackMI *longtrack =0;
3442 Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
3443 for (Int_t itrack=entries-1;itrack>0;itrack--) {
3444 AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
3445 if (!track->GetConstrain()) continue;
3446 if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
3447 if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
3448 if (track->GetChi2MIP(0)>4.) continue;
3449 minn = track->GetNumberOfClusters()+track->GetNDeadZone();
3452 //if (longtrack) besttrack=longtrack;
3455 AliITSRecPoint * clist[6];
3456 Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3457 if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
3458 &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
3459 RegisterClusterTracks(besttrack,esdindex);
3466 Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
3467 if (sharedtrack>=0){
3469 besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5);
3471 shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
3477 if (shared>2.5) return 0;
3478 if (shared>1.0) return besttrack;
3480 // Don't sign clusters if not gold track
3482 if (!besttrack->IsGoldPrimary()) return besttrack;
3483 if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
3485 if (fConstraint[fPass]){
3489 Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
3490 for (Int_t i=0;i<6;i++){
3491 Int_t index = besttrack->GetClIndex(i);
3492 if (index<0) continue;
3493 Int_t ilayer = (index & 0xf0000000) >> 28;
3494 if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
3495 AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
3497 if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
3498 if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
3499 if ( c->GetNz()> nz[i]+0.7) continue; //shared track
3500 if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
3501 if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
3502 //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
3504 Bool_t cansign = kTRUE;
3505 for (Int_t itrack=0;itrack<entries; itrack++){
3506 AliITStrackMI * track = (AliITStrackMI*)array->At(i);
3507 if (!track) continue;
3508 if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
3509 if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
3515 if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
3516 if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
3517 if (!c->IsUsed()) c->Use();
3523 //------------------------------------------------------------------------
3524 void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
3527 // get "best" hypothesys
3530 Int_t nentries = itsTracks.GetEntriesFast();
3531 for (Int_t i=0;i<nentries;i++){
3532 AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
3533 if (!track) continue;
3534 TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
3535 if (!array) continue;
3536 if (array->GetEntriesFast()<=0) continue;
3538 AliITStrackMI* longtrack=0;
3540 Float_t maxchi2=1000;
3541 for (Int_t j=0;j<array->GetEntriesFast();j++){
3542 AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
3543 if (!trackHyp) continue;
3544 if (trackHyp->GetGoldV0()) {
3545 longtrack = trackHyp; //gold V0 track taken
3548 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
3549 Float_t chi2 = trackHyp->GetChi2MIP(0);
3551 if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
3553 if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = trackHyp->GetChi2MIP(0);
3555 if (chi2 > maxchi2) continue;
3556 minn= trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
3563 AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
3564 if (!longtrack) {longtrack = besttrack;}
3565 else besttrack= longtrack;
3569 AliITSRecPoint * clist[6];
3570 Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
3572 track->SetNUsed(shared);
3573 track->SetNSkipped(besttrack->GetNSkipped());
3574 track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
3576 if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
3580 Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
3581 //if (sharedtrack==-1) sharedtrack=0;
3582 if (sharedtrack>=0) {
3583 besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
3586 if (besttrack&&fAfterV0) {
3587 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3589 if (besttrack&&fConstraint[fPass])
3590 UpdateESDtrack(besttrack,AliESDtrack::kITSin);
3591 if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
3592 if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
3593 TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
3599 //------------------------------------------------------------------------
3600 void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
3601 //--------------------------------------------------------------------
3602 //This function "cooks" a track label. If label<0, this track is fake.
3603 //--------------------------------------------------------------------
3606 if ( track->GetESDtrack()) tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
3608 track->SetChi2MIP(9,0);
3610 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3611 Int_t cindex = track->GetClusterIndex(i);
3612 Int_t l=(cindex & 0xf0000000) >> 28;
3613 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
3615 for (Int_t ind=0;ind<3;ind++){
3617 if (cl->GetLabel(ind)==tpcLabel) isWrong=0;
3618 AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
3620 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
3623 Int_t nclusters = track->GetNumberOfClusters();
3624 if (nclusters > 0) //PH Some tracks don't have any cluster
3625 track->SetFakeRatio(double(nwrong)/double(nclusters));
3627 if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
3629 track->SetLabel(tpcLabel);
3631 AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
3634 //------------------------------------------------------------------------
3635 void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
3638 track->SetChi2MIP(9,0);
3639 for (Int_t i=0;i<track->GetNumberOfClusters();i++){
3640 Int_t cindex = track->GetClusterIndex(i);
3641 Int_t l=(cindex & 0xf0000000) >> 28;
3642 AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
3643 Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
3645 for (Int_t ind=0;ind<3;ind++){
3646 if (cl->GetLabel(ind)==lab) isWrong=0;
3648 track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
3652 track->CookdEdx(low,up);
3654 //------------------------------------------------------------------------
3655 void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
3657 // Create some arrays
3659 if (fCoefficients) delete []fCoefficients;
3660 fCoefficients = new Float_t[ntracks*48];
3661 for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
3663 //------------------------------------------------------------------------
3664 Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
3667 // Compute predicted chi2
3669 Float_t erry,errz,covyz;
3670 Float_t theta = track->GetTgl();
3671 Float_t phi = track->GetSnp();
3672 phi = TMath::Abs(phi)*TMath::Sqrt(1./((1.-phi)*(1.+phi)));
3673 AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
3674 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()));
3675 // Take into account the mis-alignment (bring track to cluster plane)
3676 Double_t xTrOrig=track->GetX();
3677 if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
3678 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()));
3679 Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
3680 // Bring the track back to detector plane in ideal geometry
3681 // [mis-alignment will be accounted for in UpdateMI()]
3682 if (!track->Propagate(xTrOrig)) return 1000.;
3684 AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
3685 Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
3687 chi2+=0.5*TMath::Min(delta/2,2.);
3688 chi2+=2.*cluster->GetDeltaProbability();
3691 track->SetNy(layer,ny);
3692 track->SetNz(layer,nz);
3693 track->SetSigmaY(layer,erry);
3694 track->SetSigmaZ(layer, errz);
3695 track->SetSigmaYZ(layer,covyz);
3696 //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
3697 track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
3701 //------------------------------------------------------------------------
3702 Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
3707 Int_t layer = (index & 0xf0000000) >> 28;
3708 track->SetClIndex(layer, index);
3709 if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
3710 if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
3711 chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
3712 track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
3716 if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
3719 // Take into account the mis-alignment (bring track to cluster plane)
3720 Double_t xTrOrig=track->GetX();
3721 Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
3722 AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
3723 AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
3724 AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
3726 if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
3729 c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
3730 c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
3731 c.SetSigmaYZ(track->GetSigmaYZ(layer));
3734 Int_t updated = track->UpdateMI(&c,chi2,index);
3735 // Bring the track back to detector plane in ideal geometry
3736 if (!track->Propagate(xTrOrig)) return 0;
3738 if(!updated) AliDebug(2,"update failed");
3742 //------------------------------------------------------------------------
3743 void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
3746 //DCA sigmas parameterization
3747 //to be paramterized using external parameters in future
3750 sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
3751 sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
3753 //------------------------------------------------------------------------
3754 void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
3757 // Clusters from delta electrons?
3759 Int_t entries = clusterArray->GetEntriesFast();
3760 if (entries<4) return;
3761 AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
3762 Int_t layer = cluster->GetLayer();
3763 if (layer>1) return;
3765 Int_t ncandidates=0;
3766 Float_t r = (layer>0)? 7:4;
3768 for (Int_t i=0;i<entries;i++){
3769 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
3770 Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
3771 if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
3772 index[ncandidates] = i; //candidate to belong to delta electron track
3774 if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
3775 cl0->SetDeltaProbability(1);
3781 for (Int_t i=0;i<ncandidates;i++){
3782 AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
3783 if (cl0->GetDeltaProbability()>0.8) continue;
3786 Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
3787 sumy=sumz=sumy2=sumyz=sumw=0.0;
3788 for (Int_t j=0;j<ncandidates;j++){
3790 AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
3792 Float_t dz = cl0->GetZ()-cl1->GetZ();
3793 Float_t dy = cl0->GetY()-cl1->GetY();
3794 if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
3795 Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
3796 y[ncl] = cl1->GetY();
3797 z[ncl] = cl1->GetZ();
3798 sumy+= y[ncl]*weight;
3799 sumz+= z[ncl]*weight;
3800 sumy2+=y[ncl]*y[ncl]*weight;
3801 sumyz+=y[ncl]*z[ncl]*weight;
3806 if (ncl<4) continue;
3807 Float_t det = sumw*sumy2 - sumy*sumy;
3809 if (TMath::Abs(det)>0.01){
3810 Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
3811 Float_t k = (sumyz*sumw - sumy*sumz)/det;
3812 delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
3815 Float_t z0 = sumyz/sumy;
3816 delta = TMath::Abs(cl0->GetZ()-z0);
3819 cl0->SetDeltaProbability(1-20.*delta);
3823 //------------------------------------------------------------------------
3824 void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
3829 track->UpdateESDtrack(flags);
3830 AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
3831 if (oldtrack) delete oldtrack;
3832 track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
3833 if (TMath::Abs(track->GetDnorm(1))<0.000000001){
3834 printf("Problem\n");
3837 //------------------------------------------------------------------------
3838 Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
3840 // Get nearest upper layer close to the point xr.
3841 // rough approximation
3843 const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
3844 Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
3846 for (Int_t i=0;i<6;i++){
3847 if (radius<kRadiuses[i]){
3854 //------------------------------------------------------------------------
3855 void AliITStrackerMI::BuildMaterialLUT(TString material) {
3856 //--------------------------------------------------------------------
3857 // Fill a look-up table with mean material
3858 //--------------------------------------------------------------------
3862 Double_t point1[3],point2[3];
3863 Double_t phi,cosphi,sinphi,z;
3864 // 0-5 layers, 6 pipe, 7-8 shields
3865 Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
3866 Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
3868 Int_t ifirst=0,ilast=0;
3869 if(material.Contains("Pipe")) {
3871 } else if(material.Contains("Shields")) {
3873 } else if(material.Contains("Layers")) {
3876 Error("BuildMaterialLUT","Wrong layer name\n");
3879 for(Int_t imat=ifirst; imat<=ilast; imat++) {
3880 Double_t param[5]={0.,0.,0.,0.,0.};
3881 for (Int_t i=0; i<n; i++) {
3882 phi = 2.*TMath::Pi()*gRandom->Rndm();
3883 cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
3884 z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
3885 point1[0] = rmin[imat]*cosphi;
3886 point1[1] = rmin[imat]*sinphi;
3888 point2[0] = rmax[imat]*cosphi;
3889 point2[1] = rmax[imat]*sinphi;
3891 AliTracker::MeanMaterialBudget(point1,point2,mparam);
3892 for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
3894 for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
3896 fxOverX0Layer[imat] = param[1];
3897 fxTimesRhoLayer[imat] = param[0]*param[4];
3898 } else if(imat==6) {
3899 fxOverX0Pipe = param[1];
3900 fxTimesRhoPipe = param[0]*param[4];
3901 } else if(imat==7) {
3902 fxOverX0Shield[0] = param[1];
3903 fxTimesRhoShield[0] = param[0]*param[4];
3904 } else if(imat==8) {
3905 fxOverX0Shield[1] = param[1];
3906 fxTimesRhoShield[1] = param[0]*param[4];
3910 printf("%s\n",material.Data());
3911 printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
3912 printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
3913 printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
3914 printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
3915 printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
3916 printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
3917 printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
3918 printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
3919 printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
3923 //------------------------------------------------------------------------
3924 Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
3925 TString direction) {
3926 //-------------------------------------------------------------------
3927 // Propagate beyond beam pipe and correct for material
3928 // (material budget in different ways according to fUseTGeo value)
3929 // Add time if going outward (PropagateTo or PropagateToTGeo)
3930 //-------------------------------------------------------------------
3932 // Define budget mode:
3933 // 0: material from AliITSRecoParam (hard coded)
3934 // 1: material from TGeo in one step (on the fly)
3935 // 2: material from lut
3936 // 3: material from TGeo in one step (same for all hypotheses)
3949 if(fTrackingPhase.Contains("Clusters2Tracks"))
3950 { mode=3; } else { mode=1; }
3953 if(fTrackingPhase.Contains("Clusters2Tracks"))
3954 { mode=3; } else { mode=2; }
3960 if(fTrackingPhase.Contains("Default")) mode=0;
3962 Int_t index=fCurrentEsdTrack;
3964 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
3965 Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
3967 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
3969 Double_t xOverX0,x0,lengthTimesMeanDensity;
3973 xOverX0 = AliITSRecoParam::GetdPipe();
3974 x0 = AliITSRecoParam::GetX0Be();
3975 lengthTimesMeanDensity = xOverX0*x0;
3976 lengthTimesMeanDensity *= dir;
3977 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
3980 if (!t->PropagateToTGeo(xToGo,1)) return 0;
3983 if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
3984 xOverX0 = fxOverX0Pipe;
3985 lengthTimesMeanDensity = fxTimesRhoPipe;
3986 lengthTimesMeanDensity *= dir;
3987 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
3990 if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
3991 if(fxOverX0PipeTrks[index]<0) {
3992 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
3993 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
3994 ((1.-t->GetSnp())*(1.+t->GetSnp())));
3995 fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
3996 fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
3999 xOverX0 = fxOverX0PipeTrks[index];
4000 lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
4001 lengthTimesMeanDensity *= dir;
4002 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4008 //------------------------------------------------------------------------
4009 Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
4011 TString direction) {
4012 //-------------------------------------------------------------------
4013 // Propagate beyond SPD or SDD shield and correct for material
4014 // (material budget in different ways according to fUseTGeo value)
4015 // Add time if going outward (PropagateTo or PropagateToTGeo)
4016 //-------------------------------------------------------------------
4018 // Define budget mode:
4019 // 0: material from AliITSRecoParam (hard coded)
4020 // 1: material from TGeo in steps of X cm (on the fly)
4021 // X = AliITSRecoParam::GetStepSizeTGeo()
4022 // 2: material from lut
4023 // 3: material from TGeo in one step (same for all hypotheses)
4036 if(fTrackingPhase.Contains("Clusters2Tracks"))
4037 { mode=3; } else { mode=1; }
4040 if(fTrackingPhase.Contains("Clusters2Tracks"))
4041 { mode=3; } else { mode=2; }
4047 if(fTrackingPhase.Contains("Default")) mode=0;
4049 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4051 Int_t shieldindex=0;
4052 if (shield.Contains("SDD")) { // SDDouter
4053 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
4055 } else if (shield.Contains("SPD")) { // SPDouter
4056 rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
4059 Error("CorrectForShieldMaterial"," Wrong shield name\n");
4063 // do nothing if we are already beyond the shield
4064 Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
4065 if(dir<0 && rTrack > rToGo) return 1; // going outward
4066 if(dir>0 && rTrack < rToGo) return 1; // going inward
4070 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4072 Int_t index=2*fCurrentEsdTrack+shieldindex;
4074 Double_t xOverX0,x0,lengthTimesMeanDensity;
4079 xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
4080 x0 = AliITSRecoParam::GetX0shield(shieldindex);
4081 lengthTimesMeanDensity = xOverX0*x0;
4082 lengthTimesMeanDensity *= dir;
4083 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4086 nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4087 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4090 if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
4091 xOverX0 = fxOverX0Shield[shieldindex];
4092 lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
4093 lengthTimesMeanDensity *= dir;
4094 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4097 if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
4098 if(fxOverX0ShieldTrks[index]<0) {
4099 if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
4100 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4101 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4102 fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
4103 fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4106 xOverX0 = fxOverX0ShieldTrks[index];
4107 lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
4108 lengthTimesMeanDensity *= dir;
4109 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4115 //------------------------------------------------------------------------
4116 Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
4118 Double_t oldGlobXYZ[3],
4119 TString direction) {
4120 //-------------------------------------------------------------------
4121 // Propagate beyond layer and correct for material
4122 // (material budget in different ways according to fUseTGeo value)
4123 // Add time if going outward (PropagateTo or PropagateToTGeo)
4124 //-------------------------------------------------------------------
4126 // Define budget mode:
4127 // 0: material from AliITSRecoParam (hard coded)
4128 // 1: material from TGeo in stepsof X cm (on the fly)
4129 // X = AliITSRecoParam::GetStepSizeTGeo()
4130 // 2: material from lut
4131 // 3: material from TGeo in one step (same for all hypotheses)
4144 if(fTrackingPhase.Contains("Clusters2Tracks"))
4145 { mode=3; } else { mode=1; }
4148 if(fTrackingPhase.Contains("Clusters2Tracks"))
4149 { mode=3; } else { mode=2; }
4155 if(fTrackingPhase.Contains("Default")) mode=0;
4157 Float_t dir = (direction.Contains("inward") ? 1. : -1.);
4159 Double_t r=fgLayers[layerindex].GetR();
4160 Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
4162 Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
4164 if (!t->GetLocalXat(rToGo,xToGo)) return 0;
4166 Int_t index=6*fCurrentEsdTrack+layerindex;
4169 Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
4172 // back before material (no correction)
4174 rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
4175 if (!t->GetLocalXat(rOld,xOld)) return 0;
4176 if (!t->Propagate(xOld)) return 0;
4180 xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
4181 lengthTimesMeanDensity = xOverX0*x0;
4182 lengthTimesMeanDensity *= dir;
4183 // Bring the track beyond the material
4184 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4187 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4188 if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
4191 if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
4192 xOverX0 = fxOverX0Layer[layerindex];
4193 lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
4194 lengthTimesMeanDensity *= dir;
4195 // Bring the track beyond the material
4196 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4199 if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
4200 if(fxOverX0LayerTrks[index]<0) {
4201 nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
4202 if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
4203 Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
4204 ((1.-t->GetSnp())*(1.+t->GetSnp())));
4205 fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
4206 fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
4209 xOverX0 = fxOverX0LayerTrks[index];
4210 lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
4211 lengthTimesMeanDensity *= dir;
4212 if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
4219 //------------------------------------------------------------------------
4220 void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
4221 //-----------------------------------------------------------------
4222 // Initialize LUT for storing material for each prolonged track
4223 //-----------------------------------------------------------------
4224 fxOverX0PipeTrks = new Float_t[ntracks];
4225 fxTimesRhoPipeTrks = new Float_t[ntracks];
4226 fxOverX0ShieldTrks = new Float_t[ntracks*2];
4227 fxTimesRhoShieldTrks = new Float_t[ntracks*2];
4228 fxOverX0LayerTrks = new Float_t[ntracks*6];
4229 fxTimesRhoLayerTrks = new Float_t[ntracks*6];
4231 for(Int_t i=0; i<ntracks; i++) {
4232 fxOverX0PipeTrks[i] = -1.;
4233 fxTimesRhoPipeTrks[i] = -1.;
4235 for(Int_t j=0; j<ntracks*2; j++) {
4236 fxOverX0ShieldTrks[j] = -1.;
4237 fxTimesRhoShieldTrks[j] = -1.;
4239 for(Int_t k=0; k<ntracks*6; k++) {
4240 fxOverX0LayerTrks[k] = -1.;
4241 fxTimesRhoLayerTrks[k] = -1.;
4248 //------------------------------------------------------------------------
4249 void AliITStrackerMI::DeleteTrksMaterialLUT() {
4250 //-----------------------------------------------------------------
4251 // Delete LUT for storing material for each prolonged track
4252 //-----------------------------------------------------------------
4253 if(fxOverX0PipeTrks) {
4254 delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
4256 if(fxOverX0ShieldTrks) {
4257 delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
4260 if(fxOverX0LayerTrks) {
4261 delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
4263 if(fxTimesRhoPipeTrks) {
4264 delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
4266 if(fxTimesRhoShieldTrks) {
4267 delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
4269 if(fxTimesRhoLayerTrks) {
4270 delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
4274 //------------------------------------------------------------------------
4275 void AliITStrackerMI::SetForceSkippingOfLayer() {
4276 //-----------------------------------------------------------------
4277 // Check if we are forced to skip layers
4278 // either we set to skip them in RecoParam
4279 // or they were off during data-taking
4280 //-----------------------------------------------------------------
4282 const AliEventInfo *eventInfo = GetEventInfo();
4284 for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
4285 fForceSkippingOfLayer[l] = 0;
4287 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
4291 AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
4293 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
4294 } else if(l==2 || l==3) {
4295 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
4297 if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
4303 //------------------------------------------------------------------------
4304 Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
4305 Int_t ilayer,Int_t idet) const {
4306 //-----------------------------------------------------------------
4307 // This method is used to decide whether to allow a prolongation
4308 // without clusters, because we want to skip the layer.
4309 // In this case the return value is > 0:
4310 // return 1: the user requested to skip a layer
4311 // return 2: track outside z acceptance
4312 //-----------------------------------------------------------------
4314 if (ForceSkippingOfLayer(ilayer)) return 1;
4316 Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
4318 if (idet<0 && // out in z
4319 ilayer>innerLayCanSkip &&
4320 AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
4321 // check if track will cross SPD outer layer
4322 Double_t phiAtSPD2,zAtSPD2;
4323 if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
4324 if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
4326 return 2; // always allow skipping, changed on 05.11.2009
4331 //------------------------------------------------------------------------
4332 Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
4333 Int_t ilayer,Int_t idet,
4334 Double_t dz,Double_t dy,
4335 Bool_t noClusters) const {
4336 //-----------------------------------------------------------------
4337 // This method is used to decide whether to allow a prolongation
4338 // without clusters, because there is a dead zone in the road.
4339 // In this case the return value is > 0:
4340 // return 1: dead zone at z=0,+-7cm in SPD
4341 // return 2: all road is "bad" (dead or noisy) from the OCDB
4342 // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
4343 // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
4344 //-----------------------------------------------------------------
4346 // check dead zones at z=0,+-7cm in the SPD
4347 if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
4348 Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4349 fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
4350 fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
4351 Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4352 fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
4353 fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
4354 for (Int_t i=0; i<3; i++)
4355 if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
4356 AliDebug(2,Form("crack SPD %d",ilayer));
4361 // check bad zones from OCDB
4362 if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
4364 if (idet<0) return 0;
4366 AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
4369 Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
4370 if (ilayer==0 || ilayer==1) { // ---------- SPD
4372 } else if (ilayer==2 || ilayer==3) { // ---------- SDD
4374 detSizeFactorX *= 2.;
4375 } else if (ilayer==4 || ilayer==5) { // ---------- SSD
4378 AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
4379 if (detType==2) segm->SetLayer(ilayer+1);
4380 Float_t detSizeX = detSizeFactorX*segm->Dx();
4381 Float_t detSizeZ = detSizeFactorZ*segm->Dz();
4383 // check if the road overlaps with bad chips
4385 LocalModuleCoord(ilayer,idet,track,xloc,zloc);
4386 Float_t zlocmin = zloc-dz;
4387 Float_t zlocmax = zloc+dz;
4388 Float_t xlocmin = xloc-dy;
4389 Float_t xlocmax = xloc+dy;
4390 Int_t chipsInRoad[100];
4392 // check if road goes out of detector
4393 Bool_t touchNeighbourDet=kFALSE;
4394 if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4395 if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
4396 if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4397 if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
4398 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));
4400 // check if this detector is bad
4402 AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
4403 if(!touchNeighbourDet) {
4404 return 2; // all detectors in road are bad
4406 return 3; // at least one is bad
4410 Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
4411 AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
4412 if (!nChipsInRoad) return 0;
4414 Bool_t anyBad=kFALSE,anyGood=kFALSE;
4415 for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
4416 if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
4417 AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
4418 if (det.IsChipBad(chipsInRoad[iCh])) {
4426 if(!touchNeighbourDet) {
4427 AliDebug(2,"all bad in road");
4428 return 2; // all chips in road are bad
4430 return 3; // at least a bad chip in road
4435 AliDebug(2,"at least a bad in road");
4436 return 3; // at least a bad chip in road
4440 if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
4441 || !noClusters) return 0;
4443 // There are no clusters in road: check if there is at least
4444 // a bad SPD pixel or SDD anode or SSD strips on both sides
4446 Int_t idetInITS=idet;
4447 for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
4449 if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
4450 AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
4453 //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
4457 //------------------------------------------------------------------------
4458 Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
4459 const AliITStrackMI *track,
4460 Float_t &xloc,Float_t &zloc) const {
4461 //-----------------------------------------------------------------
4462 // Gives position of track in local module ref. frame
4463 //-----------------------------------------------------------------
4468 if(idet<0) return kTRUE; // track out of z acceptance of layer
4470 Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
4472 Int_t lad = Int_t(idet/ndet) + 1;
4474 Int_t det = idet - (lad-1)*ndet + 1;
4476 Double_t xyzGlob[3],xyzLoc[3];
4478 AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
4479 // take into account the misalignment: xyz at real detector plane
4480 if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
4482 if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
4484 xloc = (Float_t)xyzLoc[0];
4485 zloc = (Float_t)xyzLoc[2];
4489 //------------------------------------------------------------------------
4490 Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer) const {
4492 // Method to be optimized further:
4493 // Aim: decide whether a track can be used for PlaneEff evaluation
4494 // the decision is taken based on the track quality at the layer under study
4495 // no information on the clusters on this layer has to be used
4496 // The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
4497 // the cut is done on number of sigmas from the boundaries
4499 // Input: Actual track, layer [0,5] under study
4501 // Return: kTRUE if this is a good track
4503 // it will apply a pre-selection to obtain good quality tracks.
4504 // Here also you will have the possibility to put a control on the
4505 // impact point of the track on the basic block, in order to exclude border regions
4506 // this will be done by calling a proper method of the AliITSPlaneEff class.
4508 // input: AliITStrackMI* track, ilayer= layer number [0,5]
4509 // return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
4511 Int_t index[AliITSgeomTGeo::kNLayers];
4513 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
4515 for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
4516 index[k]=clusters[k];
4520 {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
4521 AliITSlayer &layer=fgLayers[ilayer];
4522 Double_t r=layer.GetR();
4523 AliITStrackMI tmp(*track);
4525 // require a minimal number of cluster in other layers and eventually clusters in closest layers
4527 for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) {
4528 AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
4529 tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
4530 if (tmp.GetClIndex(lay)>=0) ncl++;
4532 Bool_t nextout = kFALSE;
4533 if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
4534 else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
4535 Bool_t nextin = kFALSE;
4536 if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
4537 else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
4538 if(ncl<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
4540 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
4541 if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
4542 if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
4543 // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
4547 if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
4548 Int_t idet=layer.FindDetectorIndex(phi,z);
4549 if(idet<0) { AliInfo(Form("cannot find detector"));
4552 // here check if it has good Chi Square.
4554 //propagate to the intersection with the detector plane
4555 const AliITSdetector &det=layer.GetDetector(idet);
4556 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
4560 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
4561 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4562 if(key>fPlaneEff->Nblock()) return kFALSE;
4563 Float_t blockXmn,blockXmx,blockZmn,blockZmx;
4564 if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
4566 // DEFINITION OF SEARCH ROAD FOR accepting a track
4568 //For the time being they are hard-wired, later on from AliITSRecoParam
4569 // Double_t nsigx=AliITSRecoParam::GetNSigXFarFromBoundary();
4570 // Double_t nsigz=AliITSRecoParam::GetNSigZFarFromBoundary();
4573 Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4574 Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4575 // done for RecPoints
4577 // exclude tracks at boundary between detectors
4578 //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
4579 Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
4580 AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
4581 AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
4582 AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
4584 if ( (locx-dx < blockXmn+boundaryWidth) ||
4585 (locx+dx > blockXmx-boundaryWidth) ||
4586 (locz-dz < blockZmn+boundaryWidth) ||
4587 (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
4590 //------------------------------------------------------------------------
4591 void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
4593 // This Method has to be optimized! For the time-being it uses the same criteria
4594 // as those used in the search of extra clusters for overlapping modules.
4596 // Method Purpose: estabilish whether a track has produced a recpoint or not
4597 // in the layer under study (For Plane efficiency)
4599 // inputs: AliITStrackMI* track (pointer to a usable track)
4601 // side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
4602 // traversed by this very track. In details:
4603 // - if a cluster can be associated to the track then call
4604 // AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
4605 // - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
4608 {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
4609 AliITSlayer &layer=fgLayers[ilayer];
4610 Double_t r=layer.GetR();
4611 AliITStrackMI tmp(*track);
4615 if (!tmp.GetPhiZat(r,phi,z)) return;
4616 Int_t idet=layer.FindDetectorIndex(phi,z);
4618 if(idet<0) { AliInfo(Form("cannot find detector"));
4622 //propagate to the intersection with the detector plane
4623 const AliITSdetector &det=layer.GetDetector(idet);
4624 if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
4628 // DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
4630 Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
4631 TMath::Sqrt(tmp.GetSigmaZ2() +
4632 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4633 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4634 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
4635 Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
4636 TMath::Sqrt(tmp.GetSigmaY2() +
4637 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4638 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4639 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
4641 // road in global (rphi,z) [i.e. in tracking ref. system]
4642 Double_t zmin = tmp.GetZ() - dz;
4643 Double_t zmax = tmp.GetZ() + dz;
4644 Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
4645 Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
4647 // select clusters in road
4648 layer.SelectClusters(zmin,zmax,ymin,ymax);
4650 // Define criteria for track-cluster association
4651 Double_t msz = tmp.GetSigmaZ2() +
4652 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4653 AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
4654 AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
4655 Double_t msy = tmp.GetSigmaY2() +
4656 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4657 AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
4658 AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
4659 if (tmp.GetConstrain()) {
4660 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
4661 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
4663 msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
4664 msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
4666 msz = 1./msz; // 1/RoadZ^2
4667 msy = 1./msy; // 1/RoadY^2
4670 const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
4672 Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
4673 //Double_t tolerance=0.2;
4674 /*while ((cl=layer.GetNextCluster(clidx))!=0) {
4675 idetc = cl->GetDetectorIndex();
4676 if(idet!=idetc) continue;
4677 //Int_t ilay = cl->GetLayer();
4679 if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
4680 if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
4682 Double_t chi2=tmp.GetPredictedChi2(cl);
4683 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
4687 if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
4689 AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
4690 UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
4691 if(key>fPlaneEff->Nblock()) return;
4692 Bool_t found=kFALSE;
4695 while ((cl=layer.GetNextCluster(clidx))!=0) {
4696 idetc = cl->GetDetectorIndex();
4697 if(idet!=idetc) continue;
4698 // here real control to see whether the cluster can be associated to the track.
4699 // cluster not associated to track
4700 if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
4701 (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
4702 // calculate track-clusters chi2
4703 chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
4704 // in particular, the error associated to the cluster
4705 //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
4707 if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
4709 if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
4710 // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
4711 // track->SetExtraModule(ilayer,idetExtra);
4713 if(!fPlaneEff->UpDatePlaneEff(found,key))
4714 AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
4715 if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
4716 Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
4717 Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
4718 Int_t cltype[2]={-999,-999};
4722 tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
4723 tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
4726 clu[0]=layer.GetCluster(ci)->GetDetLocalX();
4727 clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
4728 cltype[0]=layer.GetCluster(ci)->GetNy();
4729 cltype[1]=layer.GetCluster(ci)->GetNz();
4731 // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
4732 // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
4733 // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
4734 // It is computed properly by calling the method
4735 // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
4737 //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
4738 //if (tmp.PropagateTo(x,0.,0.)) {
4739 chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
4740 AliCluster c(*layer.GetCluster(ci));
4741 c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
4742 c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
4743 //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
4744 clu[2]=TMath::Sqrt(c.GetSigmaY2());
4745 clu[3]=TMath::Sqrt(c.GetSigmaZ2());
4748 fPlaneEff->FillHistos(key,found,tr,clu,cltype);