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 // AliTOFtrackerV1 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 <TObjArray.h>
38 #include <TSeqCollection.h>
40 #include "AliESDtrack.h"
41 #include "AliESDEvent.h"
42 #include "AliESDpid.h"
44 #include "AliTrackPointArray.h"
45 #include "AliGeomManager.h"
46 #include "AliCDBManager.h"
48 #include "AliTOFRecoParam.h"
49 #include "AliTOFReconstructor.h"
50 #include "AliTOFcluster.h"
51 #include "AliTOFGeometry.h"
52 #include "AliTOFtrackerV1.h"
53 #include "AliTOFtrack.h"
57 ClassImp(AliTOFtrackerV1)
59 //_____________________________________________________________________________
60 AliTOFtrackerV1::AliTOFtrackerV1():
69 fTracks(new TClonesArray("AliTOFtrack")),
70 fSeeds(new TObjArray(100)),
83 //AliTOFtrackerV1 main Ctor
85 for (Int_t ii=0; ii<kMaxCluster; ii++) fClusters[ii]=0x0;
90 //_____________________________________________________________________________
91 AliTOFtrackerV1::~AliTOFtrackerV1() {
98 if(!(AliCDBManager::Instance()->GetCacheFlag())){
103 delete fHDigClusTime;
110 delete fHRecSigYVsPWin;
111 delete fHRecSigZVsPWin;
125 for (Int_t ii=0; ii<kMaxCluster; ii++)
126 if (fClusters[ii]) fClusters[ii]->Delete();
130 //_____________________________________________________________________________
131 void AliTOFtrackerV1::GetPidSettings(AliESDpid *esdPID) {
133 // Sets TOF resolution from RecoParams
136 esdPID->GetTOFResponse().SetTimeResolution(fkRecoParam->GetTimeResolution());
138 AliWarning("fkRecoParam not yet set; cannot set PID settings");
140 //_____________________________________________________________________________
141 Int_t AliTOFtrackerV1::PropagateBack(AliESDEvent * const event) {
143 // Gets seeds from ESD event and Match with TOF Clusters
146 // initialize RecoParam for current event
147 AliDebug(1,"Initializing params for TOF");
149 fkRecoParam = AliTOFReconstructor::GetRecoParam(); // instantiate reco param from STEER...
151 if (fkRecoParam == 0x0) {
152 AliFatal("No Reco Param found for TOF!!!");
154 //fkRecoParam->Dump();
155 //if(fkRecoParam->GetApplyPbPbCuts())fkRecoParam=fkRecoParam->GetPbPbparam();
156 //fkRecoParam->PrintParameters();
158 //Initialise some counters
167 Int_t ntrk=event->GetNumberOfTracks();
170 //Load ESD tracks into a local Array of ESD Seeds
171 for (Int_t i=0; i<fNseeds; i++)
172 fSeeds->AddLast(event->GetTrack(i));
174 //Prepare ESD tracks candidates for TOF Matching
180 AliInfo(Form("Number of matched tracks = %d (good = %d, bad = %d)",fnmatch,fngoodmatch,fnbadmatch));
182 //Update the matched ESD tracks
184 for (Int_t i=0; i<ntrk; i++) {
185 AliESDtrack *t=event->GetTrack(i);
186 AliESDtrack *seed =(AliESDtrack*)fSeeds->At(i);
188 if ( (seed->GetStatus()&AliESDtrack::kTOFin)!=0 ) {
189 t->SetStatus(AliESDtrack::kTOFin);
190 //if(seed->GetTOFsignal()>0){
191 if ( (seed->GetStatus()&AliESDtrack::kTOFout)!=0 ) {
192 t->SetStatus(AliESDtrack::kTOFout);
193 t->SetTOFsignal(seed->GetTOFsignal());
194 t->SetTOFcluster(seed->GetTOFcluster());
195 t->SetTOFsignalToT(seed->GetTOFsignalToT());
196 t->SetTOFsignalRaw(seed->GetTOFsignalRaw());
197 t->SetTOFsignalDz(seed->GetTOFsignalDz());
198 t->SetTOFsignalDx(seed->GetTOFsignalDx());
199 t->SetTOFDeltaBC(seed->GetTOFDeltaBC());
200 t->SetTOFL0L1(seed->GetTOFL0L1());
201 t->SetTOFCalChannel(seed->GetTOFCalChannel());
202 Int_t tlab[3]; seed->GetTOFLabel(tlab);
203 t->SetTOFLabel(tlab);
205 Double_t alphaA = (Double_t)t->GetAlpha();
206 Double_t xA = (Double_t)t->GetX();
207 Double_t yA = (Double_t)t->GetY();
208 Double_t zA = (Double_t)t->GetZ();
209 Double_t p1A = (Double_t)t->GetSnp();
210 Double_t p2A = (Double_t)t->GetTgl();
211 Double_t p3A = (Double_t)t->GetSigned1Pt();
212 const Double_t *covA = (Double_t*)t->GetCovariance();
214 // Make attention, please:
215 // AliESDtrack::fTOFInfo array does not be stored in the AliESDs.root file
216 // it is there only for a check during the reconstruction step.
217 Float_t info[10]={0.,0.,0.,0.,0.,0.,0.,0.,0.,0.};
218 seed->GetTOFInfo(info);
220 AliDebug(2,Form(" distance=%f; residual in the pad reference frame: dX=%f, dZ=%f", info[0],info[1],info[2]));
223 // by calling the AliESDtrack::UpdateTrackParams,
224 // the current track parameters are changed
225 // and it could cause refit problems.
226 // We need to update only the following track parameters:
227 // the track length and expected times.
228 // Removed AliESDtrack::UpdateTrackParams call
229 // Called AliESDtrack::SetIntegratedTimes(...) and
230 // AliESDtrack::SetIntegratedLength() routines.
232 AliTOFtrack *track = new AliTOFtrack(*seed);
233 t->UpdateTrackParams(track,AliESDtrack::kTOFout); // to be checked - AdC
235 Double_t time[10]; t->GetIntegratedTimes(time);
238 Double_t time[10]; seed->GetIntegratedTimes(time);
239 t->SetIntegratedTimes(time);
241 Double_t length = seed->GetIntegratedLength();
242 t->SetIntegratedLength(length);
244 Double_t alphaB = (Double_t)t->GetAlpha();
245 Double_t xB = (Double_t)t->GetX();
246 Double_t yB = (Double_t)t->GetY();
247 Double_t zB = (Double_t)t->GetZ();
248 Double_t p1B = (Double_t)t->GetSnp();
249 Double_t p2B = (Double_t)t->GetTgl();
250 Double_t p3B = (Double_t)t->GetSigned1Pt();
251 const Double_t *covB = (Double_t*)t->GetCovariance();
252 AliDebug(2,"Track params -now(before)-:");
253 AliDebug(2,Form(" X: %f(%f), Y: %f(%f), Z: %f(%f) --- alpha: %f(%f)",
258 AliDebug(2,Form(" p1: %f(%f), p2: %f(%f), p3: %f(%f)",
262 AliDebug(2,Form(" cov1: %f(%f), cov2: %f(%f), cov3: %f(%f)"
263 " cov4: %f(%f), cov5: %f(%f), cov6: %f(%f)"
264 " cov7: %f(%f), cov8: %f(%f), cov9: %f(%f)"
265 " cov10: %f(%f), cov11: %f(%f), cov12: %f(%f)"
266 " cov13: %f(%f), cov14: %f(%f), cov15: %f(%f)",
283 AliDebug(3,Form(" %6d %f %f %f %f %f %6d %3d %f %f %f %f %f %f",
285 t->GetTOFsignalRaw(),
287 t->GetTOFsignalToT(),
290 t->GetTOFCalChannel(),
292 t->GetIntegratedLength(),
293 time[0], time[1], time[2], time[3], time[4]
305 //_________________________________________________________________________
306 void AliTOFtrackerV1::CollectESD() {
307 //prepare the set of ESD tracks to be matched to clusters in TOF
312 TClonesArray &aTOFTrack = *fTracks;
313 for (Int_t i=0; i<fNseeds; i++) {
315 AliESDtrack *t =(AliESDtrack*)fSeeds->At(i);
316 if ((t->GetStatus()&AliESDtrack::kTPCout)==0)continue;
318 AliTOFtrack *track = new AliTOFtrack(*t); // New
319 Float_t x = (Float_t)track->GetX(); //New
321 // TRD 'good' tracks, already propagated at 371 cm
322 if ( ( (t->GetStatus()&AliESDtrack::kTRDout)!=0 ) &&
323 ( x >= AliTOFGeometry::Rmin() ) ) {
324 if ( track->PropagateToInnerTOF() ) {
326 AliDebug(1,Form(" TRD propagated track till rho = %fcm."
327 " And then the track has been propagated till rho = %fcm.",
328 x, (Float_t)track->GetX()));
330 track->SetSeedIndex(i);
331 t->UpdateTrackParams(track,AliESDtrack::kTOFin);
332 new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track);
339 // Propagate the rest of TPCbp
341 if ( track->PropagateToInnerTOF() ) {
343 AliDebug(1,Form(" TRD propagated track till rho = %fcm."
344 " And then the track has been propagated till rho = %fcm.",
345 x, (Float_t)track->GetX()));
347 track->SetSeedIndex(i);
348 t->UpdateTrackParams(track,AliESDtrack::kTOFin);
349 new(aTOFTrack[fNseedsTOF]) AliTOFtrack(*track);
357 AliInfo(Form("Number of TOF seeds = %d (Type 1 = %d, Type 2 = %d)",fNseedsTOF,seedsTOF1,seedsTOF2));
359 // Sort according uncertainties on track position
363 //_________________________________________________________________________
364 void AliTOFtrackerV1::MatchTracks( ){
366 //Match ESD tracks to clusters in TOF
370 // Parameters regulating the reconstruction
371 Float_t dY=AliTOFGeometry::XPad();
372 Float_t dZ=AliTOFGeometry::ZPad();
374 const Float_t kTimeOffset = 0.; // time offset for tracking algorithm [ps]
376 const Int_t kncmax = 100;
377 Float_t sensRadius = fkRecoParam->GetSensRadius();
378 Float_t scaleFact = fkRecoParam->GetWindowScaleFact();
379 Float_t dyMax=fkRecoParam->GetWindowSizeMaxY();
380 Float_t dzMax=fkRecoParam->GetWindowSizeMaxZ();
381 Double_t maxChi2=fkRecoParam->GetMaxChi2();
382 Bool_t timeWalkCorr = fkRecoParam->GetTimeWalkCorr();
383 AliDebug(1,"++++++++++++++TOF Reconstruction Parameters:++++++++++++ \n");
384 AliDebug(1,Form("TOF sens radius: %f",sensRadius));
385 AliDebug(1,Form("TOF Window scale factor: %f",scaleFact));
386 AliDebug(1,Form("TOF Window max dy: %f",dyMax));
387 AliDebug(1,Form("TOF Window max dz: %f",dzMax));
388 AliDebug(1,Form("TOF Max Chi2: %f",maxChi2));
389 AliDebug(1,Form("Time Walk Correction? : %d",timeWalkCorr));
393 for (Int_t iseed=0; iseed<fNseedsTOF; iseed++) {
395 AliTOFtrack *track =(AliTOFtrack*)fTracks->UncheckedAt(iseed);
396 AliESDtrack *t =(AliESDtrack*)fSeeds->At(track->GetSeedIndex());
397 //if ( t->GetTOFsignal()>0. ) continue;
398 if ( (t->GetStatus()&AliESDtrack::kTOFout)!=0 ) continue;
399 AliTOFtrack *trackTOFin = new AliTOFtrack(*track);
401 // Determine a window around the track
402 Double_t x,par[5]; trackTOFin->GetExternalParameters(x,par);
403 Double_t cov[15]; trackTOFin->GetExternalCovariance(cov);
405 if (cov[0]<0. || cov[2]<0.) {
406 AliWarning(Form("Very strange track (%d)! At least one of its covariance matrix diagonal elements is negative!",iseed));
412 Double_t dz = scaleFact*3.*TMath::Sqrt(TMath::Abs(cov[2])+dZ*dZ/12.);
413 Double_t dphi = scaleFact*3.*TMath::Sqrt(TMath::Abs(cov[0])+dY*dY/12.)/sensRadius;
415 Double_t phi=TMath::ATan2(par[0],x) + trackTOFin->GetAlpha();
416 if (phi<-TMath::Pi())phi+=2*TMath::Pi();
417 if (phi>=TMath::Pi())phi-=2*TMath::Pi();
419 //upper limit on window's size.
420 if (dz> dzMax) dz=dzMax;
421 if (dphi*sensRadius> dyMax) dphi=dyMax/sensRadius;
423 // find the clusters inside the selected window
425 AliTOFcluster *clusters[kncmax]; // pointers to the clusters in the window
426 Int_t index[kncmax];//to keep track of the cluster index
427 for (Int_t k=FindClusterIndex(z-dz); k<fN; k++) {
428 AliTOFcluster *c=fClusters[k];
429 // if(nc>kncmax)break; /* R+ fix (buffer overflow) */
431 AliWarning("No more matchable clusters can be stored! Please, increase the corresponding vectors size.");
432 break; /* R+ fix (buffer overflow protection) */
434 if (c->GetZ() > z+dz) break;
435 if (c->IsUsed()) continue;
436 if (!c->GetStatus()) {
437 AliDebug(1,"Cluster in channel declared bad!");
438 continue; // skip bad channels as declared in OCDB
440 Float_t xyz[3]; c->GetGlobalXYZ(xyz);
441 Double_t clPhi=TMath::ATan2(xyz[1],xyz[0]);
442 Double_t dph=TMath::Abs(clPhi-phi);
443 if (dph>TMath::Pi()) dph-=2.*TMath::Pi();
444 if (TMath::Abs(dph)>dphi) continue;
450 AliDebug(1,Form(" Number of matchable TOF clusters for the track number %d: %d",iseed,nc));
452 //start propagation: go to the average TOF pad middle plane at ~379.5 cm
454 Float_t xTOF = sensRadius;
455 Double_t ymax = xTOF*TMath::Tan(0.5*AliTOFGeometry::GetAlpha());
456 Bool_t skip = kFALSE;
457 Double_t ysect = trackTOFin->GetYat(xTOF,skip);
460 if (!trackTOFin->Rotate(AliTOFGeometry::GetAlpha())) {
463 } else if (ysect <-ymax) {
464 if (!trackTOFin->Rotate(-AliTOFGeometry::GetAlpha())) {
468 if(!trackTOFin->PropagateTo(xTOF)) {
473 AliTOFcluster *bestCluster=0;
474 Double_t bestChi2=maxChi2;
476 // for (Int_t i=0; i<nc; i++){ /* R+ fix (unsafe) */
477 for (Int_t i=0; i<nc && i<kncmax; i++){ /* R+ fix (buffer overflow protection) */
478 AliTOFcluster *c=clusters[i]; // one of the preselected clusters
479 Double_t chi2=trackTOFin->GetPredictedChi2((AliCluster3D*)c);
480 if (chi2 >= bestChi2) continue;
486 if (!bestCluster) { // no matching , go to the next track
494 AliDebug(2, Form("%7i %7i %10i %10i %10i %10i %7i",
497 TMath::Abs(trackTOFin->GetLabel()),
498 bestCluster->GetLabel(0),
499 bestCluster->GetLabel(1),
500 bestCluster->GetLabel(2),
505 (bestCluster->GetLabel(0)==TMath::Abs(trackTOFin->GetLabel()))
507 (bestCluster->GetLabel(1)==TMath::Abs(trackTOFin->GetLabel()))
509 (bestCluster->GetLabel(2)==TMath::Abs(trackTOFin->GetLabel()))
512 AliDebug(2,Form(" track label good %5d",trackTOFin->GetLabel()));
517 AliDebug(2,Form(" track label bad %5d",trackTOFin->GetLabel()));
520 //Propagate the track to the best matched cluster
521 trackTOFin->PropagateTo(bestCluster);
523 // Fill the track residual histograms.
524 FillResiduals(trackTOFin,bestCluster,kFALSE);
526 //now take the local distance in Z from the pad center for time walk correction
527 Float_t tiltangle = AliTOFGeometry::GetAngles(bestCluster->GetDetInd(1),bestCluster->GetDetInd(2))*TMath::DegToRad();
528 Double_t dzTW=trackTOFin->GetZ()-bestCluster->GetZ(); // in cm - in the ALICE RF -
529 dzTW/=TMath::Cos(tiltangle); // from ALICE/tracking RF to pad RF (1)
530 dzTW=-dzTW; // from ALICE/tracking RF to pad RF (2)
531 if (tiltangle!=0.) AliDebug(2,Form(" rho_track = %f --- rho_cluster = %f ",trackTOFin->GetX(),bestCluster->GetX()));
533 //update the ESD track and delete the TOFtrack
534 t->UpdateTrackParams(trackTOFin,AliESDtrack::kTOFout);
536 // Store quantities to be used in the TOF Calibration
537 Float_t tToT=AliTOFGeometry::ToTBinWidth()*bestCluster->GetToT()*1E-3; // in ns
538 t->SetTOFsignalToT(tToT);
539 Float_t rawTime=AliTOFGeometry::TdcBinWidth()*bestCluster->GetTDCRAW()+kTimeOffset; // RAW time,in ps
540 t->SetTOFsignalRaw(rawTime);
541 t->SetTOFsignalDz(dzTW);
543 Float_t deltaY = trackTOFin->GetY()-bestCluster->GetY();
544 t->SetTOFsignalDx(deltaY);
546 t->SetTOFDeltaBC(bestCluster->GetDeltaBC());
547 t->SetTOFL0L1(bestCluster->GetL0L1Latency());
549 Float_t distR = (trackTOFin->GetX()-bestCluster->GetX())*
550 (trackTOFin->GetX()-bestCluster->GetX());
551 distR+=deltaY*deltaY;
553 distR = TMath::Sqrt(distR);
554 Float_t info[10] = {distR, deltaY, dzTW,
555 0.,0.,0.,0.,0.,0.,0.};
559 ind[0]=bestCluster->GetDetInd(0);
560 ind[1]=bestCluster->GetDetInd(1);
561 ind[2]=bestCluster->GetDetInd(2);
562 ind[3]=bestCluster->GetDetInd(3);
563 ind[4]=bestCluster->GetDetInd(4);
564 Int_t calindex = AliTOFGeometry::GetIndex(ind);
565 t->SetTOFCalChannel(calindex);
567 // keep track of the track labels in the matched cluster
569 tlab[0]=bestCluster->GetLabel(0);
570 tlab[1]=bestCluster->GetLabel(1);
571 tlab[2]=bestCluster->GetLabel(2);
572 AliDebug(2,Form(" tdc time of the matched track %6d = ",bestCluster->GetTDC()));
573 Double_t tof=AliTOFGeometry::TdcBinWidth()*bestCluster->GetTDC()+kTimeOffset; // in ps
574 AliDebug(2,Form(" tof time of the matched track: %f = ",tof));
575 Double_t tofcorr=tof;
576 if(timeWalkCorr)tofcorr=CorrectTimeWalk(dzTW,tof);
577 AliDebug(2,Form(" tof time of the matched track, after TW corr: %f = ",tofcorr));
578 //Set TOF time signal and pointer to the matched cluster
579 t->SetTOFsignal(tofcorr);
580 t->SetTOFcluster(idclus); // pointing to the recPoints tree
581 t->SetTOFLabel(tlab);
583 AliDebug(2,Form(" Setting TOF raw time: %f z distance: %f corrected time: %f",rawTime,dzTW,tofcorr));
585 Double_t mom=t->GetP();
586 AliDebug(2,Form(" Momentum for track %d -> %f", iseed,mom));
587 // Fill Reco-QA histos for Reconstruction
588 fHRecNClus->Fill(nc);
589 fHRecChi2->Fill(bestChi2);
590 fHRecDistZ->Fill(dzTW);
592 fHRecSigYVsP->Fill(mom,TMath::Sqrt(cov[0]));
594 fHRecSigYVsP->Fill(mom,-TMath::Sqrt(-cov[0]));
596 fHRecSigZVsP->Fill(mom,TMath::Sqrt(cov[2]));
598 fHRecSigZVsP->Fill(mom,-TMath::Sqrt(-cov[2]));
599 fHRecSigYVsPWin->Fill(mom,dphi*sensRadius);
600 fHRecSigZVsPWin->Fill(mom,dz);
602 // Fill Tree for on-the-fly offline Calibration
603 // no longer there - all info is in the ESDs now
609 //_________________________________________________________________________
610 Int_t AliTOFtrackerV1::LoadClusters(TTree *cTree) {
611 //--------------------------------------------------------------------
612 //This function loads the TOF clusters
613 //--------------------------------------------------------------------
615 Int_t npadX = AliTOFGeometry::NpadX();
616 Int_t npadZ = AliTOFGeometry::NpadZ();
617 Int_t nStripA = AliTOFGeometry::NStripA();
618 Int_t nStripB = AliTOFGeometry::NStripB();
619 Int_t nStripC = AliTOFGeometry::NStripC();
621 TBranch *branch=cTree->GetBranch("TOF");
623 AliError("can't get the branch with the TOF clusters !");
627 static TClonesArray dummy("AliTOFcluster",10000);
629 TClonesArray *clusters=&dummy;
630 branch->SetAddress(&clusters);
633 Int_t nc=clusters->GetEntriesFast();
634 fHDigNClus->Fill(nc);
636 AliInfo(Form("Number of clusters: %d",nc));
638 for (Int_t i=0; i<nc; i++) {
639 AliTOFcluster *c=(AliTOFcluster*)clusters->UncheckedAt(i);
640 //PH fClusters[i]=new AliTOFcluster(*c); fN++;
641 fClusters[i]=c; fN++;
643 // Fill Digits QA histos
645 Int_t isector = c->GetDetInd(0);
646 Int_t iplate = c->GetDetInd(1);
647 Int_t istrip = c->GetDetInd(2);
648 Int_t ipadX = c->GetDetInd(4);
649 Int_t ipadZ = c->GetDetInd(3);
651 Float_t time =(AliTOFGeometry::TdcBinWidth()*c->GetTDC())*1E-3; // in ns
652 Float_t tot = (AliTOFGeometry::TdcBinWidth()*c->GetToT())*1E-3;//in ns
654 Int_t stripOffset = 0;
660 stripOffset = nStripC;
663 stripOffset = nStripC+nStripB;
666 stripOffset = nStripC+nStripB+nStripA;
669 stripOffset = nStripC+nStripB+nStripA+nStripB;
672 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
675 Int_t zindex=npadZ*(istrip+stripOffset)+(ipadZ+1);
676 Int_t phiindex=npadX*isector+ipadX+1;
677 fHDigClusMap->Fill(zindex,phiindex);
678 fHDigClusTime->Fill(time);
679 fHDigClusToT->Fill(tot);
685 //_________________________________________________________________________
686 void AliTOFtrackerV1::UnloadClusters() {
687 //--------------------------------------------------------------------
688 //This function unloads TOF clusters
689 //--------------------------------------------------------------------
690 for (Int_t i=0; i<fN; i++) {
691 //PH delete fClusters[i];
697 //_________________________________________________________________________
698 Int_t AliTOFtrackerV1::FindClusterIndex(Double_t z) const {
699 //--------------------------------------------------------------------
700 // This function returns the index of the nearest cluster
701 //--------------------------------------------------------------------
703 //Here we need to get the Z in the tracking system
706 if (z <= fClusters[0]->GetZ()) return 0;
707 if (z > fClusters[fN-1]->GetZ()) return fN;
708 Int_t b=0, e=fN-1, m=(b+e)/2;
709 for (; b<e; m=(b+e)/2) {
710 if (z > fClusters[m]->GetZ()) b=m+1;
716 //_________________________________________________________________________
717 Bool_t AliTOFtrackerV1::GetTrackPoint(Int_t index, AliTrackPoint& p) const
719 // Get track space point with index i
720 // Coordinates are in the global system
721 AliTOFcluster *cl = fClusters[index];
723 cl->GetGlobalXYZ(xyz);
724 Float_t phi=TMath::ATan2(xyz[1],xyz[0]);
725 Float_t phiangle = (Int_t(phi*TMath::RadToDeg()/20.)+0.5)*20.*TMath::DegToRad();
726 Float_t sinphi = TMath::Sin(phiangle), cosphi = TMath::Cos(phiangle);
727 Float_t tiltangle = AliTOFGeometry::GetAngles(cl->GetDetInd(1),cl->GetDetInd(2))*TMath::DegToRad();
728 Float_t sinth = TMath::Sin(tiltangle), costh = TMath::Cos(tiltangle);
729 Float_t sigmay2 = AliTOFGeometry::XPad()*AliTOFGeometry::XPad()/12.;
730 Float_t sigmaz2 = AliTOFGeometry::ZPad()*AliTOFGeometry::ZPad()/12.;
732 cov[0] = sinphi*sinphi*sigmay2 + cosphi*cosphi*sinth*sinth*sigmaz2;
733 cov[1] = -sinphi*cosphi*sigmay2 + sinphi*cosphi*sinth*sinth*sigmaz2;
734 cov[2] = -cosphi*sinth*costh*sigmaz2;
735 cov[3] = cosphi*cosphi*sigmay2 + sinphi*sinphi*sinth*sinth*sigmaz2;
736 cov[4] = -sinphi*sinth*costh*sigmaz2;
737 cov[5] = costh*costh*sigmaz2;
738 p.SetXYZ(xyz[0],xyz[1],xyz[2],cov);
740 // Detector numbering scheme
741 Int_t nSector = AliTOFGeometry::NSectors();
742 Int_t nPlate = AliTOFGeometry::NPlates();
743 Int_t nStripA = AliTOFGeometry::NStripA();
744 Int_t nStripB = AliTOFGeometry::NStripB();
745 Int_t nStripC = AliTOFGeometry::NStripC();
747 Int_t isector = cl->GetDetInd(0);
748 if (isector >= nSector)
749 AliError(Form("Wrong sector number in TOF (%d) !",isector));
750 Int_t iplate = cl->GetDetInd(1);
751 if (iplate >= nPlate)
752 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
753 Int_t istrip = cl->GetDetInd(2);
755 Int_t stripOffset = 0;
761 stripOffset = nStripC;
764 stripOffset = nStripC+nStripB;
767 stripOffset = nStripC+nStripB+nStripA;
770 stripOffset = nStripC+nStripB+nStripA+nStripB;
773 AliError(Form("Wrong plate number in TOF (%d) !",iplate));
777 Int_t idet = (2*(nStripC+nStripB)+nStripA)*isector +
780 UShort_t volid = AliGeomManager::LayerToVolUID(AliGeomManager::kTOF,idet);
781 p.SetVolumeID((UShort_t)volid);
784 //_________________________________________________________________________
785 void AliTOFtrackerV1::InitCheckHists() {
787 //Init histos for Digits/Reco QA and Calibration
789 TDirectory *dir = gDirectory;
790 TFile *logFileTOF = 0;
792 TSeqCollection *list = gROOT->GetListOfFiles();
793 int n = list->GetEntries();
794 Bool_t isThere=kFALSE;
795 for(int i=0; i<n; i++) {
796 logFileTOF = (TFile*)list->At(i);
797 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
803 if(!isThere)logFileTOF = new TFile( "TOFQA.root","RECREATE");
807 fHDigClusMap = new TH2F("TOFDig_ClusMap", "",182,0.5,182.5,864, 0.5,864.5);
808 fHDigNClus = new TH1F("TOFDig_NClus", "",200,0.5,200.5);
809 fHDigClusTime = new TH1F("TOFDig_ClusTime", "",2000,0.,200.);
810 fHDigClusToT = new TH1F("TOFDig_ClusToT", "",500,0.,100);
813 fHRecNClus =new TH1F("TOFRec_NClusW", "",50,0.5,50.5);
814 fHRecDistZ=new TH1F("TOFRec_DistZ", "",50,0.5,10.5);
815 fHRecChi2=new TH1F("TOFRec_Chi2", "",100,0.,10.);
816 fHRecSigYVsP=new TH2F("TOFDig_SigYVsP", "",40,0.,4.,100, 0.,5.);
817 fHRecSigZVsP=new TH2F("TOFDig_SigZVsP", "",40,0.,4.,100, 0.,5.);
818 fHRecSigYVsPWin=new TH2F("TOFDig_SigYVsPWin", "",40,0.,4.,100, 0.,50.);
819 fHRecSigZVsPWin=new TH2F("TOFDig_SigZVsPWin", "",40,0.,4.,100, 0.,50.);
825 //_________________________________________________________________________
826 void AliTOFtrackerV1::SaveCheckHists() {
828 //write histos for Digits/Reco QA and Calibration
830 TDirectory *dir = gDirectory;
832 TFile *logFileTOF = 0;
834 TSeqCollection *list = gROOT->GetListOfFiles();
835 int n = list->GetEntries();
836 for(int i=0; i<n; i++) {
837 logFile = (TFile*)list->At(i);
838 if (strstr(logFile->GetName(), "AliESDs.root")) break;
841 Bool_t isThere=kFALSE;
842 for(int i=0; i<n; i++) {
843 logFileTOF = (TFile*)list->At(i);
844 if (strstr(logFileTOF->GetName(), "TOFQA.root")){
851 AliError(Form("File TOFQA.root not found!! not wring histograms...."));
855 fHDigClusMap->Write(fHDigClusMap->GetName(), TObject::kOverwrite);
856 fHDigNClus->Write(fHDigNClus->GetName(), TObject::kOverwrite);
857 fHDigClusTime->Write(fHDigClusTime->GetName(), TObject::kOverwrite);
858 fHDigClusToT->Write(fHDigClusToT->GetName(), TObject::kOverwrite);
859 fHRecNClus->Write(fHRecNClus->GetName(), TObject::kOverwrite);
860 fHRecChi2->Write(fHRecChi2->GetName(), TObject::kOverwrite);
861 fHRecDistZ->Write(fHRecDistZ->GetName(), TObject::kOverwrite);
862 fHRecSigYVsP->Write(fHRecSigYVsP->GetName(), TObject::kOverwrite);
863 fHRecSigZVsP->Write(fHRecSigZVsP->GetName(), TObject::kOverwrite);
864 fHRecSigYVsPWin->Write(fHRecSigYVsPWin->GetName(), TObject::kOverwrite);
865 fHRecSigZVsPWin->Write(fHRecSigZVsPWin->GetName(), TObject::kOverwrite);
871 //_________________________________________________________________________
872 Float_t AliTOFtrackerV1::CorrectTimeWalk( Float_t dist, Float_t tof) const {
874 //dummy, for the moment
876 if(dist<AliTOFGeometry::ZPad()*0.5){
878 //place here the actual correction
884 //_________________________________________________________________________
885 Float_t AliTOFtrackerV1::GetTimeZerofromT0(const AliESDEvent * const event) const {
887 //Returns TimeZero as measured by T0 detector
889 return event->GetT0();
891 //_________________________________________________________________________
892 Float_t AliTOFtrackerV1::GetTimeZerofromTOF(AliESDEvent * /*event*/) const {
894 //dummy, for the moment. T0 algorithm using tracks on TOF
896 //place T0 algo here...
900 //_________________________________________________________________________
902 void AliTOFtrackerV1::FillClusterArray(TObjArray* arr) const
905 // Returns the TOF cluster array
911 for (Int_t i=0; i<fN; ++i) arr->Add(fClusters[i]);