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(1,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(1,Form("Use Time Zero?: %d",usetimeZero));
242 AliDebug(1,Form("Time Zero from T0? : %d",timeZeroFromT0));
243 AliDebug(1,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));
357 //Match ESD tracks to clusters in TOF
360 // Get the number of propagation steps
362 Int_t nSteps=(Int_t)(detDepth/stepSize);
364 //PH Arrays (moved outside of the loop)
366 Float_t * trackPos[4];
367 for (Int_t ii=0; ii<4; ii++) trackPos[ii] = new Float_t[nSteps];
368 Int_t * clind = new Int_t[fN];
371 for (Int_t iseed=0; iseed<fNseedsTOF; iseed++) {
373 AliTOFtrack *track =(AliTOFtrack*)fTracks->UncheckedAt(iseed);
374 AliESDtrack *t =(AliESDtrack*)fSeeds->UncheckedAt(track->GetSeedIndex());
375 //if ( t->GetTOFsignal()>0. ) continue;
376 if ( (t->GetStatus()&AliESDtrack::kTOFout)!=0 ) continue;
377 AliTOFtrack *trackTOFin =new AliTOFtrack(*track);
383 Float_t distZ[10000];
384 Float_t cxpos[10000];
385 Float_t crecL[10000];
386 TGeoHMatrix global[1000];
388 // Determine a window around the track
391 trackTOFin->GetExternalParameters(x,par);
393 trackTOFin->GetExternalCovariance(cov);
397 ((5*TMath::Sqrt(cov[0]) + 0.5*dY + 2.5*TMath::Abs(par[2]))/sensRadius);
400 (5*TMath::Sqrt(cov[2]) + 0.5*dZ + 2.5*TMath::Abs(par[3]));
402 Double_t phi=TMath::ATan2(par[0],x) + trackTOFin->GetAlpha();
403 if (phi<-TMath::Pi())phi+=2*TMath::Pi();
404 if (phi>=TMath::Pi())phi-=2*TMath::Pi();
407 //upper limit on window's size.
409 if(dz> dzMax) dz=dzMax;
410 if(dphi*sensRadius> dyMax) dphi=dyMax/sensRadius;
415 // find the clusters in the window of the track
417 for (Int_t k=FindClusterIndex(z-dz); k<fN; k++) {
419 AliTOFcluster *c=fClusters[k];
420 if (c->GetZ() > z+dz) break;
421 if (c->IsUsed()) continue;
423 if (!c->GetStatus()) {
424 AliDebug(1,"Cluster in channel declared bad!");
425 continue; // skip bad channels as declared in OCDB
428 Double_t dph=TMath::Abs(c->GetPhi()-phi);
429 if (dph>TMath::Pi()) dph-=2.*TMath::Pi();
430 if (TMath::Abs(dph)>dphi) continue;
432 Double_t yc=(c->GetPhi() - trackTOFin->GetAlpha())*c->GetR();
433 Double_t p[2]={yc, c->GetZ()};
434 Double_t cov2[3]= {dY*dY/12., 0., dZ*dZ/12.};
435 if (trackTOFin->AliExternalTrackParam::GetPredictedChi2(p,cov2) > maxChi2)continue;
440 ind[0]=c->GetDetInd(0);
441 ind[1]=c->GetDetInd(1);
442 ind[2]=c->GetDetInd(2);
443 ind[3]=c->GetDetInd(3);
444 ind[4]=c->GetDetInd(4);
445 fGeom->GetVolumePath(ind,path);
446 gGeoManager->cd(path);
447 global[nc] = *gGeoManager->GetCurrentMatrix();
451 //start fine propagation
453 Int_t nStepsDone = 0;
454 for( Int_t istep=0; istep<nSteps; istep++){
456 Float_t xs=AliTOFGeometry::RinTOF()+istep*0.1;
457 Double_t ymax=xs*TMath::Tan(0.5*AliTOFGeometry::GetAlpha());
460 Double_t ysect=trackTOFin->GetYat(xs,skip);
463 if (!trackTOFin->Rotate(AliTOFGeometry::GetAlpha())) {
466 } else if (ysect <-ymax) {
467 if (!trackTOFin->Rotate(-AliTOFGeometry::GetAlpha())) {
472 if(!trackTOFin->PropagateTo(xs)) {
478 // store the running point (Globalrf) - fine propagation
481 trackTOFin->GetXYZ(r);
482 trackPos[0][istep]= (Float_t) r[0];
483 trackPos[1][istep]= (Float_t) r[1];
484 trackPos[2][istep]= (Float_t) r[2];
485 trackPos[3][istep]= trackTOFin->GetIntegratedLength();
490 Bool_t accept = kFALSE;
491 Bool_t isInside = kFALSE;
492 for (Int_t istep=0; istep<nStepsDone; istep++) {
494 Float_t ctrackPos[3];
496 ctrackPos[0] = trackPos[0][istep];
497 ctrackPos[1] = trackPos[1][istep];
498 ctrackPos[2] = trackPos[2][istep];
500 //now see whether the track matches any of the TOF clusters
504 for (Int_t i=0; i<nc; i++) {
505 isInside = fGeom->IsInsideThePad(global[i],ctrackPos,dist3d);
508 Float_t yLoc = dist3d[1];
509 Float_t rLoc = TMath::Sqrt(dist3d[0]*dist3d[0]+dist3d[2]*dist3d[2]);
510 accept = (TMath::Abs(yLoc)<padDepth*0.5 && rLoc<dCut);
511 AliDebug(2," I am in the case mLastStep==kTRUE ");
518 dist[nfound] = TMath::Sqrt(dist3d[0]*dist3d[0] +
519 dist3d[1]*dist3d[1] +
520 dist3d[2]*dist3d[2]);
521 AliDebug(1,Form(" dist3dLoc[0] = %f, dist3dLoc[1] = %f, dist3dLoc[2] = %f ",
522 dist3d[0],dist3d[1],dist3d[2]));
523 distZ[nfound] = dist3d[2]; // Z distance in the RF of the
524 // hit pad closest to the
525 // reconstructed track
527 AliDebug(1,Form(" dist3dLoc[2] = %f --- distZ[%d] = %f",
528 dist3d[2],nfound,distZ[nfound]));
530 crecL[nfound] = trackPos[3][istep];
531 index[nfound] = clind[i]; // store cluster id
532 cxpos[nfound] = AliTOFGeometry::RinTOF()+istep*0.1; //store prop.radius
534 if(accept &&!mLastStep)break;
537 } //end for on the clusters
538 if(accept &&!mLastStep)break;
539 } //end for on the steps
551 // now choose the cluster to be matched with the track.
556 Float_t mindist=1000.;
558 for (Int_t iclus= 0; iclus<nfound;iclus++){
559 if (dist[iclus]< mindist){
560 mindist = dist[iclus];
561 mindistZ = distZ[iclus]; // Z distance in the RF of the hit
562 // pad closest to the reconstructed
565 idclus =index[iclus];
566 recL=crecL[iclus]+corrLen*0.5;
571 AliTOFcluster *c=fClusters[idclus];
573 Float_t tiltangle = AliTOFGeometry::GetAngles(c->GetDetInd(1),c->GetDetInd(2))*TMath::DegToRad();
574 Float_t localCheck=-mindistZ;
575 localCheck/=TMath::Cos(tiltangle); // Z (tracking/ALICE RF) component of
576 // the distance between the
577 // reconstructed track and the
578 // TOF closest cluster
580 AliDebug(2, Form("%7d %7d %10d %10d %10d %10d %7d",
583 TMath::Abs(trackTOFin->GetLabel()),
584 c->GetLabel(0), c->GetLabel(1), c->GetLabel(2),
589 // Track length correction for matching Step 2
592 Float_t rc=TMath::Sqrt(c->GetR()*c->GetR() + c->GetZ()*c->GetZ());
593 Float_t rt=TMath::Sqrt(trackPos[0][70]*trackPos[0][70]
594 +trackPos[1][70]*trackPos[1][70]
595 +trackPos[2][70]*trackPos[2][70]);
597 recL=trackPos[3][70]+dlt;
601 (c->GetLabel(0)==TMath::Abs(trackTOFin->GetLabel()))
603 (c->GetLabel(1)==TMath::Abs(trackTOFin->GetLabel()))
605 (c->GetLabel(2)==TMath::Abs(trackTOFin->GetLabel()))
609 AliDebug(2,Form(" track label good %5d",trackTOFin->GetLabel()));
615 AliDebug(2,Form(" track label bad %5d",trackTOFin->GetLabel()));
621 // Store quantities to be used in the TOF Calibration
622 Float_t tToT=AliTOFGeometry::ToTBinWidth()*c->GetToT()*1E-3; // in ns
623 t->SetTOFsignalToT(tToT);
624 Float_t rawTime=AliTOFGeometry::TdcBinWidth()*c->GetTDCRAW()+kTimeOffset; // RAW time,in ps
625 t->SetTOFsignalRaw(rawTime);
626 t->SetTOFsignalDz(mindistZ);
629 ind[0]=c->GetDetInd(0);
630 ind[1]=c->GetDetInd(1);
631 ind[2]=c->GetDetInd(2);
632 ind[3]=c->GetDetInd(3);
633 ind[4]=c->GetDetInd(4);
634 Int_t calindex = AliTOFGeometry::GetIndex(ind);
635 t->SetTOFCalChannel(calindex);
637 // keep track of the track labels in the matched cluster
639 tlab[0]=c->GetLabel(0);
640 tlab[1]=c->GetLabel(1);
641 tlab[2]=c->GetLabel(2);
642 AliDebug(2,Form(" tdc time of the matched track %6d = ",c->GetTDC()));
643 Double_t tof=AliTOFGeometry::TdcBinWidth()*c->GetTDC()+kTimeOffset; // in ps
644 AliDebug(2,Form(" tof time of the matched track: %f = ",tof));
645 Double_t tofcorr=tof;
646 if(timeWalkCorr)tofcorr=CorrectTimeWalk(mindistZ,tof);
647 AliDebug(2,Form(" tof time of the matched track, after TW corr: %f = ",tofcorr));
648 //Set TOF time signal and pointer to the matched cluster
649 t->SetTOFsignal(tofcorr);
650 t->SetTOFcluster(idclus); // pointing to the recPoints tree
652 AliDebug(2,Form(" Setting TOF raw time: %f, z distance: %f corrected time: %f ",rawTime,mindistZ,tofcorr));
655 Double_t time[AliPID::kSPECIES]; t->GetIntegratedTimes(time); // in ps
656 Double_t mom=t->GetP();
657 AliDebug(1,Form(" Momentum for track %d -> %f", iseed,mom));
658 for(Int_t j=0;j<AliPID::kSPECIES;j++){
659 Double_t mass=AliPID::ParticleMass(j);
660 time[j]+=(recL-trackPos[3][0])/kSpeedOfLight*TMath::Sqrt(mom*mom+mass*mass)/mom;
663 AliTOFtrack *trackTOFout = new AliTOFtrack(*t);
664 trackTOFout->PropagateTo(xpos);
666 // Fill the track residual histograms.
667 FillResiduals(trackTOFout,c,kFALSE);
669 t->UpdateTrackParams(trackTOFout,AliESDtrack::kTOFout);
670 t->SetIntegratedLength(recL);
671 t->SetIntegratedTimes(time);
672 t->SetTOFLabel(tlab);
675 // Fill Reco-QA histos for Reconstruction
676 fHRecNClus->Fill(nc);
677 fHRecDist->Fill(mindist);
678 fHRecSigYVsP->Fill(mom,TMath::Sqrt(cov[0]));
679 fHRecSigZVsP->Fill(mom,TMath::Sqrt(cov[2]));
680 fHRecSigYVsPWin->Fill(mom,dphi*sensRadius);
681 fHRecSigZVsPWin->Fill(mom,dz);
683 // Fill Tree for on-the-fly offline Calibration
685 if ( !((t->GetStatus() & AliESDtrack::kTIME)==0 )){
696 for (Int_t ii=0; ii<4; ii++) delete [] trackPos[ii];
700 //_________________________________________________________________________
701 Int_t AliTOFtracker::LoadClusters(TTree *cTree) {
702 //--------------------------------------------------------------------
703 //This function loads the TOF clusters
704 //--------------------------------------------------------------------
706 Int_t npadX = AliTOFGeometry::NpadX();
707 Int_t npadZ = AliTOFGeometry::NpadZ();
708 Int_t nStripA = AliTOFGeometry::NStripA();
709 Int_t nStripB = AliTOFGeometry::NStripB();
710 Int_t nStripC = AliTOFGeometry::NStripC();
712 TBranch *branch=cTree->GetBranch("TOF");
714 AliError("can't get the branch with the TOF clusters !");
718 static TClonesArray dummy("AliTOFcluster",10000);
720 TClonesArray *clusters=&dummy;
721 branch->SetAddress(&clusters);
724 Int_t nc=clusters->GetEntriesFast();
725 fHDigNClus->Fill(nc);
727 AliInfo(Form("Number of clusters: %d",nc));
729 for (Int_t i=0; i<nc; i++) {
730 AliTOFcluster *c=(AliTOFcluster*)clusters->UncheckedAt(i);
731 fClusters[i]=new AliTOFcluster(*c); fN++;
733 // Fill Digits QA histos
735 Int_t isector = c->GetDetInd(0);
736 Int_t iplate = c->GetDetInd(1);
737 Int_t istrip = c->GetDetInd(2);
738 Int_t ipadX = c->GetDetInd(4);
739 Int_t ipadZ = c->GetDetInd(3);
741 Float_t time =(AliTOFGeometry::TdcBinWidth()*c->GetTDC())*1E-3; // in ns
742 Float_t tot = (AliTOFGeometry::TdcBinWidth()*c->GetToT())*1E-3;//in ns
744 Int_t stripOffset = 0;
750 stripOffset = nStripC;
753 stripOffset = nStripC+nStripB;
756 stripOffset = nStripC+nStripB+nStripA;
759 stripOffset = nStripC+nStripB+nStripA+nStripB;
762 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
765 Int_t zindex=npadZ*(istrip+stripOffset)+(ipadZ+1);
766 Int_t phiindex=npadX*isector+ipadX+1;
767 fHDigClusMap->Fill(zindex,phiindex);
768 fHDigClusTime->Fill(time);
769 fHDigClusToT->Fill(tot);
776 //_________________________________________________________________________
777 void AliTOFtracker::UnloadClusters() {
778 //--------------------------------------------------------------------
779 //This function unloads TOF clusters
780 //--------------------------------------------------------------------
781 for (Int_t i=0; i<fN; i++) {
788 //_________________________________________________________________________
789 Int_t AliTOFtracker::FindClusterIndex(Double_t z) const {
790 //--------------------------------------------------------------------
791 // This function returns the index of the nearest cluster
792 //--------------------------------------------------------------------
794 if (z <= fClusters[0]->GetZ()) return 0;
795 if (z > fClusters[fN-1]->GetZ()) return fN;
796 Int_t b=0, e=fN-1, m=(b+e)/2;
797 for (; b<e; m=(b+e)/2) {
798 if (z > fClusters[m]->GetZ()) b=m+1;
804 //_________________________________________________________________________
805 Bool_t AliTOFtracker::GetTrackPoint(Int_t index, AliTrackPoint& p) const
807 // Get track space point with index i
808 // Coordinates are in the global system
809 AliTOFcluster *cl = fClusters[index];
811 xyz[0] = cl->GetR()*TMath::Cos(cl->GetPhi());
812 xyz[1] = cl->GetR()*TMath::Sin(cl->GetPhi());
814 Float_t phiangle = (Int_t(cl->GetPhi()*TMath::RadToDeg()/20.)+0.5)*20.*TMath::DegToRad();
815 Float_t sinphi = TMath::Sin(phiangle), cosphi = TMath::Cos(phiangle);
816 Float_t tiltangle = AliTOFGeometry::GetAngles(cl->GetDetInd(1),cl->GetDetInd(2))*TMath::DegToRad();
817 Float_t sinth = TMath::Sin(tiltangle), costh = TMath::Cos(tiltangle);
818 Float_t sigmay2 = AliTOFGeometry::XPad()*AliTOFGeometry::XPad()/12.;
819 Float_t sigmaz2 = AliTOFGeometry::ZPad()*AliTOFGeometry::ZPad()/12.;
821 cov[0] = sinphi*sinphi*sigmay2 + cosphi*cosphi*sinth*sinth*sigmaz2;
822 cov[1] = -sinphi*cosphi*sigmay2 + sinphi*cosphi*sinth*sinth*sigmaz2;
823 cov[2] = -cosphi*sinth*costh*sigmaz2;
824 cov[3] = cosphi*cosphi*sigmay2 + sinphi*sinphi*sinth*sinth*sigmaz2;
825 cov[4] = -sinphi*sinth*costh*sigmaz2;
826 cov[5] = costh*costh*sigmaz2;
827 p.SetXYZ(xyz[0],xyz[1],xyz[2],cov);
829 // Detector numbering scheme
830 Int_t nSector = AliTOFGeometry::NSectors();
831 Int_t nPlate = AliTOFGeometry::NPlates();
832 Int_t nStripA = AliTOFGeometry::NStripA();
833 Int_t nStripB = AliTOFGeometry::NStripB();
834 Int_t nStripC = AliTOFGeometry::NStripC();
836 Int_t isector = cl->GetDetInd(0);
837 if (isector >= nSector)
838 AliError(Form("Wrong sector number in TOF (%d) !",isector));
839 Int_t iplate = cl->GetDetInd(1);
840 if (iplate >= nPlate)
841 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
842 Int_t istrip = cl->GetDetInd(2);
844 Int_t stripOffset = 0;
850 stripOffset = nStripC;
853 stripOffset = nStripC+nStripB;
856 stripOffset = nStripC+nStripB+nStripA;
859 stripOffset = nStripC+nStripB+nStripA+nStripB;
862 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
866 Int_t idet = (2*(nStripC+nStripB)+nStripA)*isector +
869 UShort_t volid = AliGeomManager::LayerToVolUID(AliGeomManager::kTOF,idet);
870 p.SetVolumeID((UShort_t)volid);
873 //_________________________________________________________________________
874 void AliTOFtracker::InitCheckHists() {
876 //Init histos for Digits/Reco QA and Calibration
879 TDirectory *dir = gDirectory;
880 TFile *logFileTOF = 0;
882 TSeqCollection *list = gROOT->GetListOfFiles();
883 int n = list->GetEntries();
884 Bool_t isThere=kFALSE;
885 for(int i=0; i<n; i++) {
886 logFileTOF = (TFile*)list->At(i);
887 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
893 if(!isThere)logFileTOF = new TFile( "TOFQA.root","RECREATE");
896 fCalTree = new TTree("CalTree", "Tree for TOF calibration");
897 fCalTree->Branch("TOFchannelindex",&fIch,"iTOFch/I");
898 fCalTree->Branch("ToT",&fToT,"TOFToT/F");
899 fCalTree->Branch("TOFtime",&fTime,"TOFtime/F");
900 fCalTree->Branch("PionExpTime",&fExpTimePi,"PiExpTime/F");
901 fCalTree->Branch("KaonExpTime",&fExpTimeKa,"KaExpTime/F");
902 fCalTree->Branch("ProtonExpTime",&fExpTimePr,"PrExpTime/F");
905 fHDigClusMap = new TH2F("TOFDig_ClusMap", "",182,0.5,182.5,864, 0.5,864.5);
906 fHDigNClus = new TH1F("TOFDig_NClus", "",200,0.5,200.5);
907 fHDigClusTime = new TH1F("TOFDig_ClusTime", "",2000,0.,200.);
908 fHDigClusToT = new TH1F("TOFDig_ClusToT", "",500,0.,100);
911 fHRecNClus =new TH1F("TOFRec_NClusW", "",50,0.5,50.5);
912 fHRecDist=new TH1F("TOFRec_Dist", "",50,0.5,10.5);
913 fHRecSigYVsP=new TH2F("TOFDig_SigYVsP", "",40,0.,4.,100, 0.,5.);
914 fHRecSigZVsP=new TH2F("TOFDig_SigZVsP", "",40,0.,4.,100, 0.,5.);
915 fHRecSigYVsPWin=new TH2F("TOFDig_SigYVsPWin", "",40,0.,4.,100, 0.,50.);
916 fHRecSigZVsPWin=new TH2F("TOFDig_SigZVsPWin", "",40,0.,4.,100, 0.,50.);
922 //_________________________________________________________________________
923 void AliTOFtracker::SaveCheckHists() {
925 //write histos for Digits/Reco QA and Calibration
927 TDirectory *dir = gDirectory;
928 TFile *logFileTOF = 0;
930 TSeqCollection *list = gROOT->GetListOfFiles();
931 int n = list->GetEntries();
932 Bool_t isThere=kFALSE;
933 for(int i=0; i<n; i++) {
934 logFileTOF = (TFile*)list->At(i);
935 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
942 AliError(Form("File TOFQA.root not found!! not wring histograms...."));
946 fHDigClusMap->Write(fHDigClusMap->GetName(), TObject::kOverwrite);
947 fHDigNClus->Write(fHDigNClus->GetName(), TObject::kOverwrite);
948 fHDigClusTime->Write(fHDigClusTime->GetName(), TObject::kOverwrite);
949 fHDigClusToT->Write(fHDigClusToT->GetName(), TObject::kOverwrite);
950 fHRecNClus->Write(fHRecNClus->GetName(), TObject::kOverwrite);
951 fHRecDist->Write(fHRecDist->GetName(), TObject::kOverwrite);
952 fHRecSigYVsP->Write(fHRecSigYVsP->GetName(), TObject::kOverwrite);
953 fHRecSigZVsP->Write(fHRecSigZVsP->GetName(), TObject::kOverwrite);
954 fHRecSigYVsPWin->Write(fHRecSigYVsPWin->GetName(), TObject::kOverwrite);
955 fHRecSigZVsPWin->Write(fHRecSigZVsPWin->GetName(), TObject::kOverwrite);
956 fCalTree->Write(fCalTree->GetName(),TObject::kOverwrite);
961 //_________________________________________________________________________
962 Float_t AliTOFtracker::CorrectTimeWalk( Float_t dist, Float_t tof) {
964 //dummy, for the moment
966 if(dist<AliTOFGeometry::ZPad()*0.5){
968 //place here the actual correction
974 //_________________________________________________________________________
975 Float_t AliTOFtracker::GetTimeZerofromT0(AliESDEvent *event) const {
977 //Returns TimeZero as measured by T0 detector
979 return event->GetT0();
981 //_________________________________________________________________________
982 Float_t AliTOFtracker::GetTimeZerofromTOF(AliESDEvent * /*event*/) const {
984 //dummy, for the moment. T0 algorithm using tracks on TOF
986 //place T0 algo here...
990 //_________________________________________________________________________
992 void AliTOFtracker::FillClusterArray(TObjArray* arr) const
995 // Returns the TOF cluster array
1001 for (Int_t i=0; i<fN; ++i) arr->Add(fClusters[i]);
1004 //_________________________________________________________________________