1 /**************************************************************************
2 * Copyright(c) 1998-1999, 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 **************************************************************************/
16 //--------------------------------------------------------------------//
18 // AliTOFtracker Class //
19 // Task: Perform association of the ESD tracks to TOF Clusters //
20 // and Update ESD track with associated TOF Cluster parameters //
22 // -- Authors : S. Arcelli, C. Zampolli (Bologna University and INFN) //
23 // -- Contacts: Annalisa.De.Caro@cern.ch //
24 // -- : Chiara.Zampolli@bo.infn.it //
25 // -- : Silvia.Arcelli@bo.infn.it //
27 //--------------------------------------------------------------------//
32 #include <TClonesArray.h>
33 #include <TGeoManager.h>
38 #include "AliAlignObj.h"
39 #include "AliESDtrack.h"
40 #include "AliESDEvent.h"
42 #include "AliTrackPointArray.h"
44 #include "AliTOFcalib.h"
45 #include "AliTOFRecoParam.h"
46 #include "AliTOFcluster.h"
47 #include "AliTOFGeometry.h"
48 #include "AliTOFtracker.h"
49 #include "AliTOFtrack.h"
51 #include "AliCDBManager.h"
52 extern TGeoManager *gGeoManager;
55 ClassImp(AliTOFtracker)
57 //_____________________________________________________________________________
58 AliTOFtracker::AliTOFtracker():
89 //AliTOFtracker main Ctor
91 // Gettimg the geometry
92 fGeom= new AliTOFGeometry();
93 // Read the reconstruction parameters from the OCDB
94 AliTOFcalib* calib=new AliTOFcalib();
95 fRecoParam = (AliTOFRecoParam*)calib->ReadRecParFromCDB("TOF/Calib",-1);
96 if(fRecoParam->GetApplyPbPbCuts())fRecoParam=fRecoParam->GetPbPbparam();
98 parPID[0]=fRecoParam->GetTimeResolution();
99 parPID[1]=fRecoParam->GetTimeNSigma();
100 fPid=new AliTOFpidESD(parPID);
104 //_____________________________________________________________________________
105 AliTOFtracker::AliTOFtracker(const AliTOFtracker &t):
127 fHRecSigYVsPWin(0x0),
128 fHRecSigZVsPWin(0x0),
137 //AliTOFtracker copy Ctor
141 fNseedsTOF=t.fNseedsTOF;
142 fngoodmatch=t.fngoodmatch;
143 fnbadmatch=t.fnbadmatch;
144 fnunmatch=t.fnunmatch;
146 fRecoParam=t.fRecoParam;
153 //_____________________________________________________________________________
154 AliTOFtracker& AliTOFtracker::operator=(const AliTOFtracker &t)
156 //AliTOFtracker assignment operator
158 this->fNseeds=t.fNseeds;
159 this->fNseedsTOF=t.fNseedsTOF;
160 this->fngoodmatch=t.fngoodmatch;
161 this->fnbadmatch=t.fnbadmatch;
162 this->fnunmatch=t.fnunmatch;
163 this->fnmatch=t.fnmatch;
164 this->fRecoParam = t.fRecoParam;
167 this->fSeeds=t.fSeeds;
168 this->fTracks=t.fTracks;
173 //_____________________________________________________________________________
174 AliTOFtracker::~AliTOFtracker() {
181 if(!(AliCDBManager::Instance()->GetCacheFlag())){
188 delete fHDigClusTime;
194 delete fHRecSigYVsPWin;
195 delete fHRecSigZVsPWin;
198 //_____________________________________________________________________________
199 Int_t AliTOFtracker::PropagateBack(AliESDEvent* event) {
201 // Gets seeds from ESD event and Match with TOF Clusters
205 //Initialise some counters
214 Int_t ntrk=event->GetNumberOfTracks();
216 fSeeds= new TClonesArray("AliESDtrack",ntrk);
217 TClonesArray &aESDTrack = *fSeeds;
220 //Load ESD tracks into a local Array of ESD Seeds
222 for (Int_t i=0; i<fNseeds; i++) {
223 AliESDtrack *t=event->GetTrack(i);
224 new(aESDTrack[i]) AliESDtrack(*t);
227 //Prepare ESD tracks candidates for TOF Matching
230 //First Step with Strict Matching Criterion
233 //Second Step with Looser Matching Criterion
236 AliInfo(Form("Number of matched tracks: %d",fnmatch));
237 AliInfo(Form("Number of good matched tracks: %d",fngoodmatch));
238 AliInfo(Form("Number of bad matched tracks: %d",fnbadmatch));
240 //Update the matched ESD tracks
242 for (Int_t i=0; i<ntrk; i++) {
243 AliESDtrack *t=event->GetTrack(i);
244 AliESDtrack *seed =(AliESDtrack*)fSeeds->UncheckedAt(i);
245 if(seed->GetTOFsignal()>0){
246 t->SetTOFsignal(seed->GetTOFsignal());
247 t->SetTOFcluster(seed->GetTOFcluster());
248 t->SetTOFsignalToT(seed->GetTOFsignalToT());
249 t->SetTOFsignalRaw(seed->GetTOFsignalRaw());
250 t->SetTOFsignalDz(seed->GetTOFsignalDz());
251 t->SetTOFCalChannel(seed->GetTOFCalChannel());
252 Int_t tlab[3]; seed->GetTOFLabel(tlab);
253 t->SetTOFLabel(tlab);
254 AliTOFtrack *track = new AliTOFtrack(*seed);
255 t->UpdateTrackParams(track,AliESDtrack::kTOFout);
260 //Handle Time Zero information
262 Double_t timeZero=0.;
263 Double_t timeZeroMax=99999.;
264 Bool_t usetimeZero = fRecoParam->UseTimeZero();
265 Bool_t timeZeroFromT0 = fRecoParam->GetTimeZerofromT0();
266 Bool_t timeZeroFromTOF = fRecoParam->GetTimeZerofromTOF();
268 AliDebug(1,Form("Use Time Zero?: %d",usetimeZero));
269 AliDebug(1,Form("Time Zero from T0? : %d",timeZeroFromT0));
270 AliDebug(1,Form("Time Zero From TOF? : %d",timeZeroFromTOF));
274 timeZero=GetTimeZerofromT0(event);
276 if(timeZeroFromTOF && (timeZero>timeZeroMax || !timeZeroFromT0)){
277 timeZero=GetTimeZerofromTOF(event);
280 AliDebug(2,Form("time Zero used in PID: %f",timeZero));
282 fPid->MakePID(event,timeZero);
297 //_________________________________________________________________________
298 void AliTOFtracker::CollectESD() {
299 //prepare the set of ESD tracks to be matched to clusters in TOF
304 fTracks= new TClonesArray("AliTOFtrack");
305 TClonesArray &aTOFTrack = *fTracks;
306 for (Int_t i=0; i<fNseeds; i++) {
308 AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(i);
309 if ((t->GetStatus()&AliESDtrack::kTPCout)==0)continue;
311 // TRD 'good' tracks, already propagated at 371 cm
313 AliTOFtrack *track = new AliTOFtrack(*t); // New
314 Double_t x = track->GetX(); //New
315 if (((t->GetStatus()&AliESDtrack::kTRDout)!=0 ) &&
316 ( x >= AliTOFGeometry::RinTOF()) ){
317 track->SetSeedIndex(i);
318 t->UpdateTrackParams(track,AliESDtrack::kTOFout);
319 new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track);
325 // Propagate the rest of TPCbp
328 if(track->PropagateToInnerTOF()){
329 track->SetSeedIndex(i);
330 t->UpdateTrackParams(track,AliESDtrack::kTOFout);
331 new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track);
339 AliInfo(Form("Number of TOF seeds %i",fNseedsTOF));
340 AliInfo(Form("Number of TOF seeds Type 1 %i",seedsTOF1));
341 AliInfo(Form("Number of TOF seeds Type 2 %i",seedsTOF2));
343 // Sort according uncertainties on track position
347 //_________________________________________________________________________
348 void AliTOFtracker::MatchTracks( Bool_t mLastStep){
351 // Parameters used/regulating the reconstruction
353 static Float_t corrLen=0.75;
354 static Float_t detDepth=15.3;
355 static Float_t padDepth=0.5;
357 Float_t dY=AliTOFGeometry::XPad();
358 Float_t dZ=AliTOFGeometry::ZPad();
360 Float_t sensRadius = fRecoParam->GetSensRadius();
361 Float_t stepSize = fRecoParam->GetStepSize();
362 Float_t scaleFact = fRecoParam->GetWindowScaleFact();
363 Float_t dyMax=fRecoParam->GetWindowSizeMaxY();
364 Float_t dzMax=fRecoParam->GetWindowSizeMaxZ();
365 Float_t dCut=fRecoParam->GetDistanceCut();
366 Double_t maxChi2=fRecoParam->GetMaxChi2TRD();
367 Bool_t timeWalkCorr = fRecoParam->GetTimeWalkCorr();
369 AliDebug(1,"++++++++++++++TOF Reconstruction Parameters:++++++++++++ \n");
370 AliDebug(1,Form("TOF sens radius: %f",sensRadius));
371 AliDebug(1,Form("TOF step size: %f",stepSize));
372 AliDebug(1,Form("TOF Window scale factor: %f",scaleFact));
373 AliDebug(1,Form("TOF Window max dy: %f",dyMax));
374 AliDebug(1,Form("TOF Window max dz: %f",dzMax));
375 AliDebug(1,Form("TOF distance Cut: %f",dCut));
376 AliDebug(1,Form("TOF Max Chi2: %f",maxChi2));
377 AliDebug(1,Form("Time Walk Correction? : %d",timeWalkCorr));
379 //Match ESD tracks to clusters in TOF
382 // Get the number of propagation steps
384 Int_t nSteps=(Int_t)(detDepth/stepSize);
386 //PH Arrays (moved outside of the loop)
388 Float_t * trackPos[4];
389 for (Int_t ii=0; ii<4; ii++) trackPos[ii] = new Float_t[nSteps];
391 for (Int_t ii=0;ii<6;ii++) clind[ii] = new Int_t[fN];
393 for (Int_t iseed=0; iseed<fNseedsTOF; iseed++) {
395 AliTOFtrack *track =(AliTOFtrack*)fTracks->UncheckedAt(iseed);
396 AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(track->GetSeedIndex());
397 if(t->GetTOFsignal()>0. ) continue;
398 AliTOFtrack *trackTOFin =new AliTOFtrack(*track);
404 Float_t distZ[10000];
405 Float_t cxpos[10000];
406 Float_t crecL[10000];
407 TGeoHMatrix global[1000];
409 // Determine a window around the track
412 trackTOFin->GetExternalParameters(x,par);
414 trackTOFin->GetExternalCovariance(cov);
418 ((5*TMath::Sqrt(cov[0]) + 0.5*dY + 2.5*TMath::Abs(par[2]))/sensRadius);
421 (5*TMath::Sqrt(cov[2]) + 0.5*dZ + 2.5*TMath::Abs(par[3]));
423 Double_t phi=TMath::ATan2(par[0],x) + trackTOFin->GetAlpha();
424 if (phi<-TMath::Pi())phi+=2*TMath::Pi();
425 if (phi>=TMath::Pi())phi-=2*TMath::Pi();
428 //upper limit on window's size.
430 if(dz> dzMax) dz=dzMax;
431 if(dphi*sensRadius> dyMax) dphi=dyMax/sensRadius;
436 // find the clusters in the window of the track
438 for (Int_t k=FindClusterIndex(z-dz); k<fN; k++) {
440 AliTOFcluster *c=fClusters[k];
441 if (c->GetZ() > z+dz) break;
442 if (c->IsUsed()) continue;
444 if (!c->GetStatus()) continue; // skip bad channels as declared in OCDB
446 Double_t dph=TMath::Abs(c->GetPhi()-phi);
447 if (dph>TMath::Pi()) dph-=2.*TMath::Pi();
448 if (TMath::Abs(dph)>dphi) continue;
450 Double_t yc=(c->GetPhi() - trackTOFin->GetAlpha())*c->GetR();
451 Double_t p[2]={yc, c->GetZ()};
452 Double_t cov[3]= {dY*dY/12., 0., dZ*dZ/12.};
453 if (trackTOFin->AliExternalTrackParam::GetPredictedChi2(p,cov) > maxChi2)continue;
455 clind[0][nc] = c->GetDetInd(0);
456 clind[1][nc] = c->GetDetInd(1);
457 clind[2][nc] = c->GetDetInd(2);
458 clind[3][nc] = c->GetDetInd(3);
459 clind[4][nc] = c->GetDetInd(4);
468 fGeom->GetVolumePath(ind,path);
469 gGeoManager->cd(path);
470 global[nc] = *gGeoManager->GetCurrentMatrix();
474 //start fine propagation
476 Int_t nStepsDone = 0;
477 for( Int_t istep=0; istep<nSteps; istep++){
479 Float_t xs=AliTOFGeometry::RinTOF()+istep*0.1;
480 Double_t ymax=xs*TMath::Tan(0.5*AliTOFGeometry::GetAlpha());
483 Double_t ysect=trackTOFin->GetYat(xs,skip);
486 if (!trackTOFin->Rotate(AliTOFGeometry::GetAlpha())) {
489 } else if (ysect <-ymax) {
490 if (!trackTOFin->Rotate(AliTOFGeometry::GetAlpha())) {
495 if(!trackTOFin->PropagateTo(xs)) {
501 // store the running point (Globalrf) - fine propagation
504 trackTOFin->GetXYZ(r);
505 trackPos[0][istep]= (Float_t) r[0];
506 trackPos[1][istep]= (Float_t) r[1];
507 trackPos[2][istep]= (Float_t) r[2];
508 trackPos[3][istep]= trackTOFin->GetIntegratedLength();
513 Bool_t accept = kFALSE;
514 Bool_t isInside =kFALSE;
515 for (Int_t istep=0; istep<nStepsDone; istep++) {
517 Float_t ctrackPos[3];
519 ctrackPos[0]= trackPos[0][istep];
520 ctrackPos[1]= trackPos[1][istep];
521 ctrackPos[2]= trackPos[2][istep];
523 //now see whether the track matches any of the TOF clusters
527 for (Int_t i=0; i<nc; i++){
529 cind[0]= clind[0][i];
530 cind[1]= clind[1][i];
531 cind[2]= clind[2][i];
532 cind[3]= clind[3][i];
533 cind[4]= clind[4][i];
534 isInside=fGeom->IsInsideThePad(global[i],ctrackPos,dist3d);
537 Float_t xLoc=dist3d[0];
538 Float_t rLoc=TMath::Sqrt(dist3d[1]*dist3d[1]+dist3d[2]*dist3d[2]);
539 accept = (TMath::Abs(xLoc)<padDepth*0.5 && rLoc<dCut);
545 dist[nfound]=TMath::Sqrt(dist3d[0]*dist3d[0]+dist3d[1]*dist3d[1]+dist3d[2]*dist3d[2]);
546 distZ[nfound]=dist3d[2];
547 crecL[nfound]=trackPos[3][istep];
548 index[nfound]=clind[5][i]; // store cluster id
549 cxpos[nfound]=AliTOFGeometry::RinTOF()+istep*0.1; //store prop.radius
551 if(accept &&!mLastStep)break;
553 } //end for on the clusters
554 if(accept &&!mLastStep)break;
555 } //end for on the steps
567 // now choose the cluster to be matched with the track.
572 Float_t mindist=1000.;
574 for (Int_t iclus= 0; iclus<nfound;iclus++){
575 if (dist[iclus]< mindist){
576 mindist = dist[iclus];
577 mindistZ = distZ[iclus];
579 idclus =index[iclus];
580 recL=crecL[iclus]+corrLen*0.5;
585 AliTOFcluster *c=fClusters[idclus];
588 // Track length correction for matching Step 2
591 Float_t rc=TMath::Sqrt(c->GetR()*c->GetR() + c->GetZ()*c->GetZ());
592 Float_t rt=TMath::Sqrt(trackPos[0][70]*trackPos[0][70]
593 +trackPos[1][70]*trackPos[1][70]
594 +trackPos[2][70]*trackPos[2][70]);
596 recL=trackPos[3][70]+dlt;
600 (c->GetLabel(0)==TMath::Abs(trackTOFin->GetLabel()))
602 (c->GetLabel(1)==TMath::Abs(trackTOFin->GetLabel()))
604 (c->GetLabel(2)==TMath::Abs(trackTOFin->GetLabel()))
608 AliDebug(2,Form(" track label good %5i",trackTOFin->GetLabel()));
614 AliDebug(2,Form(" track label bad %5i",trackTOFin->GetLabel()));
620 // Store quantities to be used in the TOF Calibration
621 Float_t tToT=AliTOFGeometry::ToTBinWidth()*c->GetToT()*1E-3; // in ns
622 t->SetTOFsignalToT(tToT);
623 Float_t rawTime=AliTOFGeometry::TdcBinWidth()*c->GetTDCRAW()+32; // RAW time,in ps
624 t->SetTOFsignalRaw(rawTime);
625 t->SetTOFsignalDz(mindistZ);
626 AliDebug(2,Form(" Setting TOF raw time: %f, z distance: %f time: %f = ",rawTime,mindistZ));
628 ind[0]=c->GetDetInd(0);
629 ind[1]=c->GetDetInd(1);
630 ind[2]=c->GetDetInd(2);
631 ind[3]=c->GetDetInd(3);
632 ind[4]=c->GetDetInd(4);
633 Int_t calindex = AliTOFGeometry::GetIndex(ind);
634 t->SetTOFCalChannel(calindex);
636 // keep track of the track labels in the matched cluster
638 tlab[0]=c->GetLabel(0);
639 tlab[1]=c->GetLabel(1);
640 tlab[2]=c->GetLabel(2);
641 AliDebug(2,Form(" tdc time of the matched track %i = ",c->GetTDC()));
642 Double_t tof=AliTOFGeometry::TdcBinWidth()*c->GetTDC()+32; // in ps
643 AliDebug(2,Form(" tof time of the matched track: %f = ",tof));
644 Double_t tofcorr=tof;
645 if(timeWalkCorr)tofcorr=CorrectTimeWalk(mindistZ,tof);
646 AliDebug(2,Form(" tof time of the matched track, after TW corr: %f = ",tofcorr));
647 //Set TOF time signal and pointer to the matched cluster
648 t->SetTOFsignal(tofcorr);
649 t->SetTOFcluster(idclus); // pointing to the recPoints tree
652 Double_t time[AliPID::kSPECIES]; t->GetIntegratedTimes(time);
653 Double_t mom=t->GetP();
654 for(Int_t j=0;j<AliPID::kSPECIES;j++){
655 Double_t mass=AliPID::ParticleMass(j);
656 time[j]+=(recL-trackPos[3][0])/3e-2*TMath::Sqrt(mom*mom+mass*mass)/mom;
659 AliTOFtrack *trackTOFout = new AliTOFtrack(*t);
660 trackTOFout->PropagateTo(xpos);
661 t->UpdateTrackParams(trackTOFout,AliESDtrack::kTOFout);
662 t->SetIntegratedLength(recL);
663 t->SetIntegratedTimes(time);
664 t->SetTOFLabel(tlab);
667 // Fill Reco-QA histos for Reconstruction
668 fHRecNClus->Fill(nc);
669 fHRecDist->Fill(mindist);
670 fHRecSigYVsP->Fill(mom,TMath::Sqrt(cov[0]));
671 fHRecSigZVsP->Fill(mom,TMath::Sqrt(cov[2]));
672 fHRecSigYVsPWin->Fill(mom,dphi*sensRadius);
673 fHRecSigZVsPWin->Fill(mom,dz);
675 // Fill Tree for on-the-fly offline Calibration
677 if ( !((t->GetStatus() & AliESDtrack::kTIME)==0 )){
688 for (Int_t ii=0; ii<4; ii++) delete [] trackPos[ii];
689 for (Int_t ii=0;ii<6;ii++) delete [] clind[ii];
692 //_________________________________________________________________________
693 Int_t AliTOFtracker::LoadClusters(TTree *cTree) {
694 //--------------------------------------------------------------------
695 //This function loads the TOF clusters
696 //--------------------------------------------------------------------
698 Int_t npadX = AliTOFGeometry::NpadX();
699 Int_t npadZ = AliTOFGeometry::NpadZ();
700 Int_t nStripA = AliTOFGeometry::NStripA();
701 Int_t nStripB = AliTOFGeometry::NStripB();
702 Int_t nStripC = AliTOFGeometry::NStripC();
704 TBranch *branch=cTree->GetBranch("TOF");
706 AliError("can't get the branch with the TOF clusters !");
710 TClonesArray dummy("AliTOFcluster",10000), *clusters=&dummy;
711 branch->SetAddress(&clusters);
714 Int_t nc=clusters->GetEntriesFast();
715 fHDigNClus->Fill(nc);
717 AliInfo(Form("Number of clusters: %d",nc));
719 for (Int_t i=0; i<nc; i++) {
720 AliTOFcluster *c=(AliTOFcluster*)clusters->UncheckedAt(i);
721 fClusters[i]=new AliTOFcluster(*c); fN++;
723 // Fill Digits QA histos
725 Int_t isector = c->GetDetInd(0);
726 Int_t iplate = c->GetDetInd(1);
727 Int_t istrip = c->GetDetInd(2);
728 Int_t ipadX = c->GetDetInd(4);
729 Int_t ipadZ = c->GetDetInd(3);
731 Float_t time =(AliTOFGeometry::TdcBinWidth()*c->GetTDC())*1E-3; // in ns
732 Float_t tot = (AliTOFGeometry::TdcBinWidth()*c->GetToT())*1E-3;//in ns
734 Int_t stripOffset = 0;
740 stripOffset = nStripC;
743 stripOffset = nStripC+nStripB;
746 stripOffset = nStripC+nStripB+nStripA;
749 stripOffset = nStripC+nStripB+nStripA+nStripB;
752 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
755 Int_t zindex=npadZ*(istrip+stripOffset)+(ipadZ+1);
756 Int_t phiindex=npadX*isector+ipadX+1;
757 fHDigClusMap->Fill(zindex,phiindex);
758 fHDigClusTime->Fill(time);
759 fHDigClusToT->Fill(tot);
766 //_________________________________________________________________________
767 void AliTOFtracker::UnloadClusters() {
768 //--------------------------------------------------------------------
769 //This function unloads TOF clusters
770 //--------------------------------------------------------------------
771 for (Int_t i=0; i<fN; i++) {
778 //_________________________________________________________________________
779 Int_t AliTOFtracker::FindClusterIndex(Double_t z) const {
780 //--------------------------------------------------------------------
781 // This function returns the index of the nearest cluster
782 //--------------------------------------------------------------------
784 if (z <= fClusters[0]->GetZ()) return 0;
785 if (z > fClusters[fN-1]->GetZ()) return fN;
786 Int_t b=0, e=fN-1, m=(b+e)/2;
787 for (; b<e; m=(b+e)/2) {
788 if (z > fClusters[m]->GetZ()) b=m+1;
794 //_________________________________________________________________________
795 Bool_t AliTOFtracker::GetTrackPoint(Int_t index, AliTrackPoint& p) const
797 // Get track space point with index i
798 // Coordinates are in the global system
799 AliTOFcluster *cl = fClusters[index];
801 xyz[0] = cl->GetR()*TMath::Cos(cl->GetPhi());
802 xyz[1] = cl->GetR()*TMath::Sin(cl->GetPhi());
804 Float_t phiangle = (Int_t(cl->GetPhi()*TMath::RadToDeg()/20.)+0.5)*20.*TMath::DegToRad();
805 Float_t sinphi = TMath::Sin(phiangle), cosphi = TMath::Cos(phiangle);
806 Float_t tiltangle = AliTOFGeometry::GetAngles(cl->GetDetInd(1),cl->GetDetInd(2))*TMath::DegToRad();
807 Float_t sinth = TMath::Sin(tiltangle), costh = TMath::Cos(tiltangle);
808 Float_t sigmay2 = AliTOFGeometry::XPad()*AliTOFGeometry::XPad()/12.;
809 Float_t sigmaz2 = AliTOFGeometry::ZPad()*AliTOFGeometry::ZPad()/12.;
811 cov[0] = sinphi*sinphi*sigmay2 + cosphi*cosphi*sinth*sinth*sigmaz2;
812 cov[1] = -sinphi*cosphi*sigmay2 + sinphi*cosphi*sinth*sinth*sigmaz2;
813 cov[2] = -cosphi*sinth*costh*sigmaz2;
814 cov[3] = cosphi*cosphi*sigmay2 + sinphi*sinphi*sinth*sinth*sigmaz2;
815 cov[4] = -sinphi*sinth*costh*sigmaz2;
816 cov[5] = costh*costh*sigmaz2;
817 p.SetXYZ(xyz[0],xyz[1],xyz[2],cov);
819 // Detector numbering scheme
820 Int_t nSector = AliTOFGeometry::NSectors();
821 Int_t nPlate = AliTOFGeometry::NPlates();
822 Int_t nStripA = AliTOFGeometry::NStripA();
823 Int_t nStripB = AliTOFGeometry::NStripB();
824 Int_t nStripC = AliTOFGeometry::NStripC();
826 Int_t isector = cl->GetDetInd(0);
827 if (isector >= nSector)
828 AliError(Form("Wrong sector number in TOF (%d) !",isector));
829 Int_t iplate = cl->GetDetInd(1);
830 if (iplate >= nPlate)
831 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
832 Int_t istrip = cl->GetDetInd(2);
834 Int_t stripOffset = 0;
840 stripOffset = nStripC;
843 stripOffset = nStripC+nStripB;
846 stripOffset = nStripC+nStripB+nStripA;
849 stripOffset = nStripC+nStripB+nStripA+nStripB;
852 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
856 Int_t idet = (2*(nStripC+nStripB)+nStripA)*isector +
859 UShort_t volid = AliGeomManager::LayerToVolUID(AliGeomManager::kTOF,idet);
860 p.SetVolumeID((UShort_t)volid);
863 //_________________________________________________________________________
864 void AliTOFtracker::InitCheckHists() {
866 //Init histos for Digits/Reco QA and Calibration
869 fCalTree = new TTree("CalTree", "Tree for TOF calibration");
870 fCalTree->Branch("TOFchannelindex",&fIch,"iTOFch/I");
871 fCalTree->Branch("ToT",&fToT,"TOFToT/F");
872 fCalTree->Branch("TOFtime",&fTime,"TOFtime/F");
873 fCalTree->Branch("PionExpTime",&fExpTimePi,"PiExpTime/F");
874 fCalTree->Branch("KaonExpTime",&fExpTimeKa,"KaExpTime/F");
875 fCalTree->Branch("ProtonExpTime",&fExpTimePr,"PrExpTime/F");
878 fHDigClusMap = new TH2F("TOFDig_ClusMap", "",182,0.5,182.5,864, 0.5,864.5);
879 fHDigNClus = new TH1F("TOFDig_NClus", "",200,0.5,200.5);
880 fHDigClusTime = new TH1F("TOFDig_ClusTime", "",2000,0.,200.);
881 fHDigClusToT = new TH1F("TOFDig_ClusToT", "",500,0.,100);
884 fHRecNClus =new TH1F("TOFRec_NClusW", "",50,0.5,50.5);
885 fHRecDist=new TH1F("TOFRec_Dist", "",50,0.5,10.5);
886 fHRecSigYVsP=new TH2F("TOFDig_SigYVsP", "",40,0.,4.,100, 0.,5.);
887 fHRecSigZVsP=new TH2F("TOFDig_SigZVsP", "",40,0.,4.,100, 0.,5.);
888 fHRecSigYVsPWin=new TH2F("TOFDig_SigYVsPWin", "",40,0.,4.,100, 0.,50.);
889 fHRecSigZVsPWin=new TH2F("TOFDig_SigZVsPWin", "",40,0.,4.,100, 0.,50.);
892 //_________________________________________________________________________
893 void AliTOFtracker::SaveCheckHists() {
895 //write histos for Digits/Reco QA and Calibration
897 TDirectory *dir = gDirectory;
899 TFile *logFileTOF = 0;
901 TSeqCollection *list = gROOT->GetListOfFiles();
902 int n = list->GetEntries();
903 for(int i=0; i<n; i++) {
904 logFile = (TFile*)list->At(i);
905 if (strstr(logFile->GetName(), "AliESDs.root")) break;
908 Bool_t isThere=kFALSE;
909 for(int i=0; i<n; i++) {
910 logFileTOF = (TFile*)list->At(i);
911 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
918 fHDigClusMap->Write(fHDigClusMap->GetName(), TObject::kOverwrite);
919 fHDigNClus->Write(fHDigNClus->GetName(), TObject::kOverwrite);
920 fHDigClusTime->Write(fHDigClusTime->GetName(), TObject::kOverwrite);
921 fHDigClusToT->Write(fHDigClusToT->GetName(), TObject::kOverwrite);
922 fHRecNClus->Write(fHRecNClus->GetName(), TObject::kOverwrite);
923 fHRecDist->Write(fHRecDist->GetName(), TObject::kOverwrite);
924 fHRecSigYVsP->Write(fHRecSigYVsP->GetName(), TObject::kOverwrite);
925 fHRecSigZVsP->Write(fHRecSigZVsP->GetName(), TObject::kOverwrite);
926 fHRecSigYVsPWin->Write(fHRecSigYVsPWin->GetName(), TObject::kOverwrite);
927 fHRecSigZVsPWin->Write(fHRecSigZVsPWin->GetName(), TObject::kOverwrite);
928 //fCalTree->Write(fCalTree->GetName(),TObject::kOverwrite);
931 if(!isThere)logFileTOF = new TFile( "TOFQA.root","RECREATE");
933 fHDigClusMap->Write(fHDigClusMap->GetName(), TObject::kOverwrite);
934 fHDigNClus->Write(fHDigNClus->GetName(), TObject::kOverwrite);
935 fHDigClusTime->Write(fHDigClusTime->GetName(), TObject::kOverwrite);
936 fHDigClusToT->Write(fHDigClusToT->GetName(), TObject::kOverwrite);
937 fHRecNClus->Write(fHRecNClus->GetName(), TObject::kOverwrite);
938 fHRecDist->Write(fHRecDist->GetName(), TObject::kOverwrite);
939 fHRecSigYVsP->Write(fHRecSigYVsP->GetName(), TObject::kOverwrite);
940 fHRecSigZVsP->Write(fHRecSigZVsP->GetName(), TObject::kOverwrite);
941 fHRecSigYVsPWin->Write(fHRecSigYVsPWin->GetName(), TObject::kOverwrite);
942 fHRecSigZVsPWin->Write(fHRecSigZVsPWin->GetName(), TObject::kOverwrite);
943 fCalTree->Write(fCalTree->GetName(),TObject::kOverwrite);
948 //_________________________________________________________________________
949 Float_t AliTOFtracker::CorrectTimeWalk( Float_t dist, Float_t tof) {
951 //dummy, for the moment
953 if(dist<AliTOFGeometry::ZPad()*0.5){
955 //place here the actual correction
961 //_________________________________________________________________________
962 Float_t AliTOFtracker::GetTimeZerofromT0(AliESDEvent *event) const {
964 //Returns TimeZero as measured by T0 detector
966 return event->GetT0();
968 //_________________________________________________________________________
969 Float_t AliTOFtracker::GetTimeZerofromTOF(AliESDEvent * /*event*/) const {
971 //dummy, for the moment. T0 algorithm using tracks on TOF
973 //place T0 algo here...