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 <TSeqCollection.h>
33 #include <TClonesArray.h>
34 #include <TGeoManager.h>
39 #include "AliGeomManager.h"
40 #include "AliESDtrack.h"
41 #include "AliESDEvent.h"
43 #include "AliTrackPointArray.h"
44 #include "AliCDBManager.h"
46 #include "AliTOFpidESD.h"
47 #include "AliTOFRecoParam.h"
48 #include "AliTOFReconstructor.h"
49 #include "AliTOFcluster.h"
50 #include "AliTOFGeometry.h"
51 #include "AliTOFtracker.h"
52 #include "AliTOFtrack.h"
54 extern TGeoManager *gGeoManager;
57 ClassImp(AliTOFtracker)
59 //_____________________________________________________________________________
60 AliTOFtracker::AliTOFtracker():
71 fTracks(new TClonesArray("AliTOFtrack")),
72 fSeeds(new TClonesArray("AliESDtrack")),
91 //AliTOFtracker main Ctor
93 // Gettimg the geometry
94 fGeom= new AliTOFGeometry();
99 //_____________________________________________________________________________
100 AliTOFtracker::~AliTOFtracker() {
107 if(!(AliCDBManager::Instance()->GetCacheFlag())){
114 delete fHDigClusTime;
120 delete fHRecSigYVsPWin;
121 delete fHRecSigZVsPWin;
135 //_____________________________________________________________________________
136 Int_t AliTOFtracker::PropagateBack(AliESDEvent* event) {
138 // Gets seeds from ESD event and Match with TOF Clusters
141 // initialize RecoParam for current event
143 AliInfo("Initializing params for TOF... ");
145 fRecoParam = AliTOFReconstructor::GetRecoParam(); // instantiate reco param from STEER...
147 if (fRecoParam == 0x0) {
148 AliFatal("No Reco Param found for TOF!!!");
150 //fRecoParam->Dump();
151 //if(fRecoParam->GetApplyPbPbCuts())fRecoParam=fRecoParam->GetPbPbparam();
152 //fRecoParam->PrintParameters();
155 parPID[0]=fRecoParam->GetTimeResolution();
156 parPID[1]=fRecoParam->GetTimeNSigma();
157 fPid=new AliTOFpidESD(parPID);
159 //Initialise some counters
168 Int_t ntrk=event->GetNumberOfTracks();
170 TClonesArray &aESDTrack = *fSeeds;
173 //Load ESD tracks into a local Array of ESD Seeds
175 for (Int_t i=0; i<fNseeds; i++) {
176 AliESDtrack *t=event->GetTrack(i);
177 new(aESDTrack[i]) AliESDtrack(*t);
180 //Prepare ESD tracks candidates for TOF Matching
183 //First Step with Strict Matching Criterion
186 //Second Step with Looser Matching Criterion
189 AliInfo(Form("Number of matched tracks: %d",fnmatch));
190 AliInfo(Form("Number of good matched tracks: %d",fngoodmatch));
191 AliInfo(Form("Number of bad matched tracks: %d",fnbadmatch));
193 //Update the matched ESD tracks
195 for (Int_t i=0; i<ntrk; i++) {
196 AliESDtrack *t=event->GetTrack(i);
197 AliESDtrack *seed =(AliESDtrack*)fSeeds->UncheckedAt(i);
199 if ( (seed->GetStatus()&AliESDtrack::kTOFin)!=0 ) {
200 t->SetStatus(AliESDtrack::kTOFin);
201 //if(seed->GetTOFsignal()>0){
202 if ( (seed->GetStatus()&AliESDtrack::kTOFout)!=0 ) {
203 t->SetStatus(AliESDtrack::kTOFout);
204 t->SetTOFsignal(seed->GetTOFsignal());
205 t->SetTOFcluster(seed->GetTOFcluster());
206 t->SetTOFsignalToT(seed->GetTOFsignalToT());
207 t->SetTOFsignalRaw(seed->GetTOFsignalRaw());
208 t->SetTOFsignalDz(seed->GetTOFsignalDz());
209 t->SetTOFCalChannel(seed->GetTOFCalChannel());
210 Int_t tlab[3]; seed->GetTOFLabel(tlab);
211 t->SetTOFLabel(tlab);
213 AliTOFtrack *track = new AliTOFtrack(*seed);
214 t->UpdateTrackParams(track,AliESDtrack::kTOFout); // to be checked - AdC
216 Double_t time[10]; t->GetIntegratedTimes(time);
217 AliDebug(2,Form(" %6d %f %f %f %f %6d %3d %f %f %f %f %f %f",
219 t->GetTOFsignalRaw(),
221 t->GetTOFsignalToT(),
223 t->GetTOFCalChannel(),
225 t->GetIntegratedLength(),
226 time[0], time[1], time[2], time[3], time[4]
233 //Handle Time Zero information
235 Double_t timeZero=0.;
236 Double_t timeZeroMax=99999.;
237 Bool_t usetimeZero = fRecoParam->UseTimeZero();
238 Bool_t timeZeroFromT0 = fRecoParam->GetTimeZerofromT0();
239 Bool_t timeZeroFromTOF = fRecoParam->GetTimeZerofromTOF();
241 AliDebug(2,Form("Use Time Zero?: %d",usetimeZero));
242 AliDebug(2,Form("Time Zero from T0? : %d",timeZeroFromT0));
243 AliDebug(2,Form("Time Zero From TOF? : %d",timeZeroFromTOF));
247 timeZero=GetTimeZerofromT0(event);
249 if(timeZeroFromTOF && (timeZero>timeZeroMax || !timeZeroFromT0)){
250 timeZero=GetTimeZerofromTOF(event);
253 AliDebug(2,Form("time Zero used in PID: %f",timeZero));
255 fPid->MakePID(event,timeZero);
262 //_________________________________________________________________________
263 void AliTOFtracker::CollectESD() {
264 //prepare the set of ESD tracks to be matched to clusters in TOF
269 TClonesArray &aTOFTrack = *fTracks;
270 for (Int_t i=0; i<fNseeds; i++) {
272 AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(i);
273 if ((t->GetStatus()&AliESDtrack::kTPCout)==0)continue;
275 AliTOFtrack *track = new AliTOFtrack(*t); // New
276 Float_t x = (Float_t)track->GetX(); //New
278 // TRD 'good' tracks, already propagated at 371 cm
279 if ( ( (t->GetStatus()&AliESDtrack::kTRDout)!=0 ) &&
280 ( x >= AliTOFGeometry::Rmin() ) ) {
281 if ( track->PropagateToInnerTOF() ) {
283 AliDebug(1,Form(" TRD propagated track till rho = %fcm."
284 " And then the track has been propagated till rho = %fcm.",
285 x, (Float_t)track->GetX()));
287 track->SetSeedIndex(i);
288 t->UpdateTrackParams(track,AliESDtrack::kTOFin);
289 new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track);
296 // Propagate the rest of TPCbp
298 if ( track->PropagateToInnerTOF() ) {
300 AliDebug(1,Form(" TPC propagated track till rho = %fcm."
301 " And then the track has been propagated till rho = %fcm.",
302 x, (Float_t)track->GetX()));
304 track->SetSeedIndex(i);
305 t->UpdateTrackParams(track,AliESDtrack::kTOFin);
306 new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track);
314 AliInfo(Form("Number of TOF seeds %d",fNseedsTOF));
315 AliInfo(Form("Number of TOF seeds Type 1 %d",seedsTOF1));
316 AliInfo(Form("Number of TOF seeds Type 2 %d",seedsTOF2));
318 // Sort according uncertainties on track position
322 //_________________________________________________________________________
323 void AliTOFtracker::MatchTracks( Bool_t mLastStep){
326 // Parameters used/regulating the reconstruction
328 static Float_t corrLen=0.75;
329 static Float_t detDepth=15.3;
330 static Float_t padDepth=0.5;
332 const Float_t kSpeedOfLight= 2.99792458e-2; // speed of light [cm/ps]
333 const Float_t kTimeOffset = 32.; // time offset for tracking algorithm [ps]
335 Float_t dY=AliTOFGeometry::XPad();
336 Float_t dZ=AliTOFGeometry::ZPad();
338 Float_t sensRadius = fRecoParam->GetSensRadius();
339 Float_t stepSize = fRecoParam->GetStepSize();
340 Float_t scaleFact = fRecoParam->GetWindowScaleFact();
341 Float_t dyMax=fRecoParam->GetWindowSizeMaxY();
342 Float_t dzMax=fRecoParam->GetWindowSizeMaxZ();
343 Float_t dCut=fRecoParam->GetDistanceCut();
344 Double_t maxChi2=fRecoParam->GetMaxChi2TRD();
345 Bool_t timeWalkCorr = fRecoParam->GetTimeWalkCorr();
347 AliDebug(1,"++++++++++++++TOF Reconstruction Parameters:++++++++++++ \n");
348 AliDebug(1,Form("TOF sens radius: %f",sensRadius));
349 AliDebug(1,Form("TOF step size: %f",stepSize));
350 AliDebug(1,Form("TOF Window scale factor: %f",scaleFact));
351 AliDebug(1,Form("TOF Window max dy: %f",dyMax));
352 AliDebug(1,Form("TOF Window max dz: %f",dzMax));
353 AliDebug(1,Form("TOF distance Cut: %f",dCut));
354 AliDebug(1,Form("TOF Max Chi2: %f",maxChi2));
355 AliDebug(1,Form("Time Walk Correction? : %d",timeWalkCorr));
358 //Match ESD tracks to clusters in TOF
360 // Get the number of propagation steps
361 Int_t nSteps=(Int_t)(detDepth/stepSize);
363 //PH Arrays (moved outside of the loop)
364 Float_t * trackPos[4];
365 for (Int_t ii=0; ii<4; ii++) trackPos[ii] = new Float_t[nSteps];
366 Int_t * clind = new Int_t[fN];
369 const Int_t kNfoundMax = 10000; // related to nSteps value
370 Int_t index[kNfoundMax];
371 Float_t dist[kNfoundMax];
372 Float_t distZ[kNfoundMax];
373 Float_t cxpos[kNfoundMax];
374 Float_t crecL[kNfoundMax];
375 const Int_t kNclusterMax = 1000; // related to fN value
376 TGeoHMatrix global[kNclusterMax];
379 for (Int_t iseed=0; iseed<fNseedsTOF; iseed++) {
381 for (Int_t ii=0; ii<kNfoundMax; ii++) {
388 for (Int_t ii=0; ii<kNclusterMax; ii++)
391 AliTOFtrack *track =(AliTOFtrack*)fTracks->UncheckedAt(iseed);
392 AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(track->GetSeedIndex());
393 //if ( t->GetTOFsignal()>0. ) continue;
394 if ( (t->GetStatus()&AliESDtrack::kTOFout)!=0 ) continue;
395 AliTOFtrack *trackTOFin =new AliTOFtrack(*track);
397 // Determine a window around the track
399 trackTOFin->GetExternalParameters(x,par);
401 trackTOFin->GetExternalCovariance(cov);
403 if (cov[0]<0. || cov[2]<0.) {
404 AliWarning(Form("Very strange track (%d)! At least one of its covariance matrix diagonal elements is negative!",iseed));
411 ((5*TMath::Sqrt(cov[0]) + 0.5*dY + 2.5*TMath::Abs(par[2]))/sensRadius);
414 (5*TMath::Sqrt(cov[2]) + 0.5*dZ + 2.5*TMath::Abs(par[3]));
416 Double_t phi=TMath::ATan2(par[0],x) + trackTOFin->GetAlpha();
417 if (phi<-TMath::Pi())phi+=2*TMath::Pi();
418 if (phi>=TMath::Pi())phi-=2*TMath::Pi();
421 //upper limit on window's size.
423 if(dz> dzMax) dz=dzMax;
424 if(dphi*sensRadius> dyMax) dphi=dyMax/sensRadius;
429 // find the clusters in the window of the track
431 for (Int_t k=FindClusterIndex(z-dz); k<fN; k++) {
433 if (nc>=kNclusterMax) {
434 AliWarning("No more matchable clusters can be stored! Please, increase the corresponding vectors size.");
438 AliTOFcluster *c=fClusters[k];
439 if (c->GetZ() > z+dz) break;
440 if (c->IsUsed()) continue;
442 if (!c->GetStatus()) {
443 AliDebug(1,"Cluster in channel declared bad!");
444 continue; // skip bad channels as declared in OCDB
447 Double_t dph=TMath::Abs(c->GetPhi()-phi);
448 if (dph>TMath::Pi()) dph-=2.*TMath::Pi();
449 if (TMath::Abs(dph)>dphi) continue;
451 Double_t yc=(c->GetPhi() - trackTOFin->GetAlpha())*c->GetR();
452 Double_t p[2]={yc, c->GetZ()};
453 Double_t cov2[3]= {dY*dY/12., 0., dZ*dZ/12.};
454 if (trackTOFin->AliExternalTrackParam::GetPredictedChi2(p,cov2) > maxChi2)continue;
459 ind[0]=c->GetDetInd(0);
460 ind[1]=c->GetDetInd(1);
461 ind[2]=c->GetDetInd(2);
462 ind[3]=c->GetDetInd(3);
463 ind[4]=c->GetDetInd(4);
464 fGeom->GetVolumePath(ind,path);
465 gGeoManager->cd(path);
466 global[nc] = *gGeoManager->GetCurrentMatrix();
470 AliDebug(1,Form(" Number of matchable TOF clusters for the track number %d: %d",iseed,nc));
472 //start fine propagation
474 Int_t nStepsDone = 0;
475 for( Int_t istep=0; istep<nSteps; istep++){
477 Float_t xs=AliTOFGeometry::RinTOF()+istep*0.1;
478 Double_t ymax=xs*TMath::Tan(0.5*AliTOFGeometry::GetAlpha());
481 Double_t ysect=trackTOFin->GetYat(xs,skip);
484 if (!trackTOFin->Rotate(AliTOFGeometry::GetAlpha())) {
487 } else if (ysect <-ymax) {
488 if (!trackTOFin->Rotate(-AliTOFGeometry::GetAlpha())) {
493 if(!trackTOFin->PropagateTo(xs)) {
499 // store the running point (Globalrf) - fine propagation
502 trackTOFin->GetXYZ(r);
503 trackPos[0][istep]= (Float_t) r[0];
504 trackPos[1][istep]= (Float_t) r[1];
505 trackPos[2][istep]= (Float_t) r[2];
506 trackPos[3][istep]= trackTOFin->GetIntegratedLength();
511 Bool_t accept = kFALSE;
512 Bool_t isInside = kFALSE;
513 for (Int_t istep=0; istep<nStepsDone; istep++) {
515 if (nfound>=kNfoundMax) {
516 AliWarning("No more track positions can be stored! Please, increase the corresponding vectors size.");
520 Float_t ctrackPos[3];
521 ctrackPos[0] = trackPos[0][istep];
522 ctrackPos[1] = trackPos[1][istep];
523 ctrackPos[2] = trackPos[2][istep];
525 //now see whether the track matches any of the TOF clusters
529 for (Int_t i=0; i<nc; i++) {
530 isInside = fGeom->IsInsideThePad(global[i],ctrackPos,dist3d);
533 Float_t yLoc = dist3d[1];
534 Float_t rLoc = TMath::Sqrt(dist3d[0]*dist3d[0]+dist3d[2]*dist3d[2]);
535 accept = (TMath::Abs(yLoc)<padDepth*0.5 && rLoc<dCut);
536 AliDebug(2," I am in the case mLastStep==kTRUE ");
543 dist[nfound] = TMath::Sqrt(dist3d[0]*dist3d[0] +
544 dist3d[1]*dist3d[1] +
545 dist3d[2]*dist3d[2]);
546 AliDebug(2,Form(" dist3dLoc[0] = %f, dist3dLoc[1] = %f, dist3dLoc[2] = %f ",
547 dist3d[0],dist3d[1],dist3d[2]));
548 distZ[nfound] = dist3d[2]; // Z distance in the RF of the
549 // hit pad closest to the
550 // reconstructed track
552 AliDebug(2,Form(" dist3dLoc[2] = %f --- distZ[%d] = %f",
553 dist3d[2],nfound,distZ[nfound]));
555 crecL[nfound] = trackPos[3][istep];
556 index[nfound] = clind[i]; // store cluster id
557 cxpos[nfound] = AliTOFGeometry::RinTOF()+istep*0.1; //store prop.radius
559 if(accept &&!mLastStep)break;
562 } //end for on the clusters
563 if(accept &&!mLastStep)break;
564 } //end for on the steps
566 AliDebug(1,Form(" Number of track points for the track number %d: %d",iseed,nfound));
577 // now choose the cluster to be matched with the track.
582 Float_t mindist=1000.;
584 for (Int_t iclus= 0; iclus<nfound;iclus++){
585 if (dist[iclus]< mindist){
586 mindist = dist[iclus];
587 mindistZ = distZ[iclus]; // Z distance in the RF of the hit
588 // pad closest to the reconstructed
591 idclus =index[iclus];
592 recL=crecL[iclus]+corrLen*0.5;
597 AliTOFcluster *c=fClusters[idclus];
599 Float_t tiltangle = AliTOFGeometry::GetAngles(c->GetDetInd(1),c->GetDetInd(2))*TMath::DegToRad();
600 Float_t localCheck=-mindistZ;
601 localCheck/=TMath::Cos(tiltangle); // Z (tracking/ALICE RF) component of
602 // the distance between the
603 // reconstructed track and the
604 // TOF closest cluster
606 AliDebug(2, Form("%7d %7d %10d %10d %10d %10d %7d",
609 TMath::Abs(trackTOFin->GetLabel()),
610 c->GetLabel(0), c->GetLabel(1), c->GetLabel(2),
615 // Track length correction for matching Step 2
618 Float_t rc=TMath::Sqrt(c->GetR()*c->GetR() + c->GetZ()*c->GetZ());
619 Float_t rt=TMath::Sqrt(trackPos[0][70]*trackPos[0][70]
620 +trackPos[1][70]*trackPos[1][70]
621 +trackPos[2][70]*trackPos[2][70]);
623 recL=trackPos[3][70]+dlt;
627 (c->GetLabel(0)==TMath::Abs(trackTOFin->GetLabel()))
629 (c->GetLabel(1)==TMath::Abs(trackTOFin->GetLabel()))
631 (c->GetLabel(2)==TMath::Abs(trackTOFin->GetLabel()))
635 AliDebug(2,Form(" track label good %5d",trackTOFin->GetLabel()));
641 AliDebug(2,Form(" track label bad %5d",trackTOFin->GetLabel()));
647 // Store quantities to be used in the TOF Calibration
648 Float_t tToT=AliTOFGeometry::ToTBinWidth()*c->GetToT()*1E-3; // in ns
649 t->SetTOFsignalToT(tToT);
650 Float_t rawTime=AliTOFGeometry::TdcBinWidth()*c->GetTDCRAW()+kTimeOffset; // RAW time,in ps
651 t->SetTOFsignalRaw(rawTime);
652 t->SetTOFsignalDz(mindistZ);
655 ind[0]=c->GetDetInd(0);
656 ind[1]=c->GetDetInd(1);
657 ind[2]=c->GetDetInd(2);
658 ind[3]=c->GetDetInd(3);
659 ind[4]=c->GetDetInd(4);
660 Int_t calindex = AliTOFGeometry::GetIndex(ind);
661 t->SetTOFCalChannel(calindex);
663 // keep track of the track labels in the matched cluster
665 tlab[0]=c->GetLabel(0);
666 tlab[1]=c->GetLabel(1);
667 tlab[2]=c->GetLabel(2);
668 AliDebug(2,Form(" tdc time of the matched track %6d = ",c->GetTDC()));
669 Double_t tof=AliTOFGeometry::TdcBinWidth()*c->GetTDC()+kTimeOffset; // in ps
670 AliDebug(2,Form(" tof time of the matched track: %f = ",tof));
671 Double_t tofcorr=tof;
672 if(timeWalkCorr)tofcorr=CorrectTimeWalk(mindistZ,tof);
673 AliDebug(2,Form(" tof time of the matched track, after TW corr: %f = ",tofcorr));
674 //Set TOF time signal and pointer to the matched cluster
675 t->SetTOFsignal(tofcorr);
676 t->SetTOFcluster(idclus); // pointing to the recPoints tree
678 AliDebug(2,Form(" Setting TOF raw time: %f, z distance: %f corrected time: %f ",rawTime,mindistZ,tofcorr));
681 Double_t time[AliPID::kSPECIES]; t->GetIntegratedTimes(time); // in ps
682 Double_t mom=t->GetP();
683 AliDebug(2,Form(" Momentum for track %d -> %f", iseed,mom));
684 for (Int_t j=0;j<AliPID::kSPECIES;j++) {
685 Double_t mass=AliPID::ParticleMass(j);
686 time[j]+=(recL-trackPos[3][0])/kSpeedOfLight*TMath::Sqrt(mom*mom+mass*mass)/mom;
689 AliTOFtrack *trackTOFout = new AliTOFtrack(*t);
690 trackTOFout->PropagateTo(xpos);
692 // Fill the track residual histograms.
693 FillResiduals(trackTOFout,c,kFALSE);
695 t->UpdateTrackParams(trackTOFout,AliESDtrack::kTOFout);
696 t->SetIntegratedLength(recL);
697 t->SetIntegratedTimes(time);
698 t->SetTOFLabel(tlab);
701 // Fill Reco-QA histos for Reconstruction
702 fHRecNClus->Fill(nc);
703 fHRecDist->Fill(mindist);
704 fHRecSigYVsP->Fill(mom,TMath::Sqrt(cov[0]));
705 fHRecSigZVsP->Fill(mom,TMath::Sqrt(cov[2]));
706 fHRecSigYVsPWin->Fill(mom,dphi*sensRadius);
707 fHRecSigZVsPWin->Fill(mom,dz);
709 // Fill Tree for on-the-fly offline Calibration
711 if ( !((t->GetStatus() & AliESDtrack::kTIME)==0 ) ) {
722 for (Int_t ii=0; ii<4; ii++) delete [] trackPos[ii];
726 //_________________________________________________________________________
727 Int_t AliTOFtracker::LoadClusters(TTree *cTree) {
728 //--------------------------------------------------------------------
729 //This function loads the TOF clusters
730 //--------------------------------------------------------------------
732 Int_t npadX = AliTOFGeometry::NpadX();
733 Int_t npadZ = AliTOFGeometry::NpadZ();
734 Int_t nStripA = AliTOFGeometry::NStripA();
735 Int_t nStripB = AliTOFGeometry::NStripB();
736 Int_t nStripC = AliTOFGeometry::NStripC();
738 TBranch *branch=cTree->GetBranch("TOF");
740 AliError("can't get the branch with the TOF clusters !");
744 static TClonesArray dummy("AliTOFcluster",10000);
746 TClonesArray *clusters=&dummy;
747 branch->SetAddress(&clusters);
750 Int_t nc=clusters->GetEntriesFast();
751 fHDigNClus->Fill(nc);
753 AliInfo(Form("Number of clusters: %d",nc));
755 for (Int_t i=0; i<nc; i++) {
756 AliTOFcluster *c=(AliTOFcluster*)clusters->UncheckedAt(i);
757 fClusters[i]=new AliTOFcluster(*c); fN++;
759 // Fill Digits QA histos
761 Int_t isector = c->GetDetInd(0);
762 Int_t iplate = c->GetDetInd(1);
763 Int_t istrip = c->GetDetInd(2);
764 Int_t ipadX = c->GetDetInd(4);
765 Int_t ipadZ = c->GetDetInd(3);
767 Float_t time =(AliTOFGeometry::TdcBinWidth()*c->GetTDC())*1E-3; // in ns
768 Float_t tot = (AliTOFGeometry::TdcBinWidth()*c->GetToT())*1E-3;//in ns
770 Int_t stripOffset = 0;
776 stripOffset = nStripC;
779 stripOffset = nStripC+nStripB;
782 stripOffset = nStripC+nStripB+nStripA;
785 stripOffset = nStripC+nStripB+nStripA+nStripB;
788 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
791 Int_t zindex=npadZ*(istrip+stripOffset)+(ipadZ+1);
792 Int_t phiindex=npadX*isector+ipadX+1;
793 fHDigClusMap->Fill(zindex,phiindex);
794 fHDigClusTime->Fill(time);
795 fHDigClusToT->Fill(tot);
802 //_________________________________________________________________________
803 void AliTOFtracker::UnloadClusters() {
804 //--------------------------------------------------------------------
805 //This function unloads TOF clusters
806 //--------------------------------------------------------------------
807 for (Int_t i=0; i<fN; i++) {
814 //_________________________________________________________________________
815 Int_t AliTOFtracker::FindClusterIndex(Double_t z) const {
816 //--------------------------------------------------------------------
817 // This function returns the index of the nearest cluster
818 //--------------------------------------------------------------------
820 if (z <= fClusters[0]->GetZ()) return 0;
821 if (z > fClusters[fN-1]->GetZ()) return fN;
822 Int_t b=0, e=fN-1, m=(b+e)/2;
823 for (; b<e; m=(b+e)/2) {
824 if (z > fClusters[m]->GetZ()) b=m+1;
830 //_________________________________________________________________________
831 Bool_t AliTOFtracker::GetTrackPoint(Int_t index, AliTrackPoint& p) const
833 // Get track space point with index i
834 // Coordinates are in the global system
835 AliTOFcluster *cl = fClusters[index];
837 xyz[0] = cl->GetR()*TMath::Cos(cl->GetPhi());
838 xyz[1] = cl->GetR()*TMath::Sin(cl->GetPhi());
840 Float_t phiangle = (Int_t(cl->GetPhi()*TMath::RadToDeg()/20.)+0.5)*20.*TMath::DegToRad();
841 Float_t sinphi = TMath::Sin(phiangle), cosphi = TMath::Cos(phiangle);
842 Float_t tiltangle = AliTOFGeometry::GetAngles(cl->GetDetInd(1),cl->GetDetInd(2))*TMath::DegToRad();
843 Float_t sinth = TMath::Sin(tiltangle), costh = TMath::Cos(tiltangle);
844 Float_t sigmay2 = AliTOFGeometry::XPad()*AliTOFGeometry::XPad()/12.;
845 Float_t sigmaz2 = AliTOFGeometry::ZPad()*AliTOFGeometry::ZPad()/12.;
847 cov[0] = sinphi*sinphi*sigmay2 + cosphi*cosphi*sinth*sinth*sigmaz2;
848 cov[1] = -sinphi*cosphi*sigmay2 + sinphi*cosphi*sinth*sinth*sigmaz2;
849 cov[2] = -cosphi*sinth*costh*sigmaz2;
850 cov[3] = cosphi*cosphi*sigmay2 + sinphi*sinphi*sinth*sinth*sigmaz2;
851 cov[4] = -sinphi*sinth*costh*sigmaz2;
852 cov[5] = costh*costh*sigmaz2;
853 p.SetXYZ(xyz[0],xyz[1],xyz[2],cov);
855 // Detector numbering scheme
856 Int_t nSector = AliTOFGeometry::NSectors();
857 Int_t nPlate = AliTOFGeometry::NPlates();
858 Int_t nStripA = AliTOFGeometry::NStripA();
859 Int_t nStripB = AliTOFGeometry::NStripB();
860 Int_t nStripC = AliTOFGeometry::NStripC();
862 Int_t isector = cl->GetDetInd(0);
863 if (isector >= nSector)
864 AliError(Form("Wrong sector number in TOF (%d) !",isector));
865 Int_t iplate = cl->GetDetInd(1);
866 if (iplate >= nPlate)
867 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
868 Int_t istrip = cl->GetDetInd(2);
870 Int_t stripOffset = 0;
876 stripOffset = nStripC;
879 stripOffset = nStripC+nStripB;
882 stripOffset = nStripC+nStripB+nStripA;
885 stripOffset = nStripC+nStripB+nStripA+nStripB;
888 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
892 Int_t idet = (2*(nStripC+nStripB)+nStripA)*isector +
895 UShort_t volid = AliGeomManager::LayerToVolUID(AliGeomManager::kTOF,idet);
896 p.SetVolumeID((UShort_t)volid);
899 //_________________________________________________________________________
900 void AliTOFtracker::InitCheckHists() {
902 //Init histos for Digits/Reco QA and Calibration
905 TDirectory *dir = gDirectory;
906 TFile *logFileTOF = 0;
908 TSeqCollection *list = gROOT->GetListOfFiles();
909 int n = list->GetEntries();
910 Bool_t isThere=kFALSE;
911 for(int i=0; i<n; i++) {
912 logFileTOF = (TFile*)list->At(i);
913 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
919 if(!isThere)logFileTOF = new TFile( "TOFQA.root","RECREATE");
922 fCalTree = new TTree("CalTree", "Tree for TOF calibration");
923 fCalTree->Branch("TOFchannelindex",&fIch,"iTOFch/I");
924 fCalTree->Branch("ToT",&fToT,"TOFToT/F");
925 fCalTree->Branch("TOFtime",&fTime,"TOFtime/F");
926 fCalTree->Branch("PionExpTime",&fExpTimePi,"PiExpTime/F");
927 fCalTree->Branch("KaonExpTime",&fExpTimeKa,"KaExpTime/F");
928 fCalTree->Branch("ProtonExpTime",&fExpTimePr,"PrExpTime/F");
931 fHDigClusMap = new TH2F("TOFDig_ClusMap", "",182,0.5,182.5,864, 0.5,864.5);
932 fHDigNClus = new TH1F("TOFDig_NClus", "",200,0.5,200.5);
933 fHDigClusTime = new TH1F("TOFDig_ClusTime", "",2000,0.,200.);
934 fHDigClusToT = new TH1F("TOFDig_ClusToT", "",500,0.,100);
937 fHRecNClus =new TH1F("TOFRec_NClusW", "",50,0.5,50.5);
938 fHRecDist=new TH1F("TOFRec_Dist", "",50,0.5,10.5);
939 fHRecSigYVsP=new TH2F("TOFDig_SigYVsP", "",40,0.,4.,100, 0.,5.);
940 fHRecSigZVsP=new TH2F("TOFDig_SigZVsP", "",40,0.,4.,100, 0.,5.);
941 fHRecSigYVsPWin=new TH2F("TOFDig_SigYVsPWin", "",40,0.,4.,100, 0.,50.);
942 fHRecSigZVsPWin=new TH2F("TOFDig_SigZVsPWin", "",40,0.,4.,100, 0.,50.);
948 //_________________________________________________________________________
949 void AliTOFtracker::SaveCheckHists() {
951 //write histos for Digits/Reco QA and Calibration
953 TDirectory *dir = gDirectory;
954 TFile *logFileTOF = 0;
956 TSeqCollection *list = gROOT->GetListOfFiles();
957 int n = list->GetEntries();
958 Bool_t isThere=kFALSE;
959 for(int i=0; i<n; i++) {
960 logFileTOF = (TFile*)list->At(i);
961 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
968 AliError(Form("File TOFQA.root not found!! not wring histograms...."));
972 fHDigClusMap->Write(fHDigClusMap->GetName(), TObject::kOverwrite);
973 fHDigNClus->Write(fHDigNClus->GetName(), TObject::kOverwrite);
974 fHDigClusTime->Write(fHDigClusTime->GetName(), TObject::kOverwrite);
975 fHDigClusToT->Write(fHDigClusToT->GetName(), TObject::kOverwrite);
976 fHRecNClus->Write(fHRecNClus->GetName(), TObject::kOverwrite);
977 fHRecDist->Write(fHRecDist->GetName(), TObject::kOverwrite);
978 fHRecSigYVsP->Write(fHRecSigYVsP->GetName(), TObject::kOverwrite);
979 fHRecSigZVsP->Write(fHRecSigZVsP->GetName(), TObject::kOverwrite);
980 fHRecSigYVsPWin->Write(fHRecSigYVsPWin->GetName(), TObject::kOverwrite);
981 fHRecSigZVsPWin->Write(fHRecSigZVsPWin->GetName(), TObject::kOverwrite);
982 fCalTree->Write(fCalTree->GetName(),TObject::kOverwrite);
987 //_________________________________________________________________________
988 Float_t AliTOFtracker::CorrectTimeWalk( Float_t dist, Float_t tof) {
990 //dummy, for the moment
992 if(dist<AliTOFGeometry::ZPad()*0.5){
994 //place here the actual correction
1000 //_________________________________________________________________________
1001 Float_t AliTOFtracker::GetTimeZerofromT0(AliESDEvent *event) const {
1003 //Returns TimeZero as measured by T0 detector
1005 return event->GetT0();
1007 //_________________________________________________________________________
1008 Float_t AliTOFtracker::GetTimeZerofromTOF(AliESDEvent * /*event*/) const {
1010 //dummy, for the moment. T0 algorithm using tracks on TOF
1012 //place T0 algo here...
1016 //_________________________________________________________________________
1018 void AliTOFtracker::FillClusterArray(TObjArray* arr) const
1021 // Returns the TOF cluster array
1027 for (Int_t i=0; i<fN; ++i) arr->Add(fClusters[i]);
1030 //_________________________________________________________________________