STEER/STEERBase/AliPIDResponse.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 /* $Id: AliPIDResponse.cxx 46193 2010-12-21 09:00:14Z wiechula $ */
  17
  18 //-----------------------------------------------------------------
  19 //        Base class for handling the pid response               //
  20 //        functions of all detectors                             //
  21 //        and give access to the nsigmas                         //
  22 //                                                               //
  23 //   Origin: Jens Wiechula, Uni Tuebingen, jens.wiechula@cern.ch //
  24 //-----------------------------------------------------------------
  25
  26 #include <TList.h>
  27 #include <TObjArray.h>
  28 #include <TPRegexp.h>
  29 #include <TF1.h>
  30 #include <TSpline.h>
  31 #include <TFile.h>
  32
  33 #include <AliVEvent.h>
  34 #include <AliVTrack.h>
  35 #include <AliLog.h>
  36 #include <AliPID.h>
  37 #include <AliOADBContainer.h>
  38 #include <AliTRDPIDParams.h>
  39 #include <AliTRDPIDReference.h>
  40 #include <AliTOFPIDParams.h>
  41
  42 #include "AliPIDResponse.h"
  43
  44 #include "AliCentrality.h"
  45
  46 ClassImp(AliPIDResponse);
  47
  48 AliPIDResponse::AliPIDResponse(Bool_t isMC/*=kFALSE*/) :
  49 TNamed("PIDResponse","PIDResponse"),
  50 fITSResponse(isMC),
  51 fTPCResponse(),
  52 fTRDResponse(),
  53 fTOFResponse(),
  54 fEMCALResponse(),
  55 fRange(5.),
  56 fITSPIDmethod(kITSTruncMean),
  57 fIsMC(isMC),
  58 fOADBPath(),
  59 fBeamType("PP"),
  60 fLHCperiod(),
  61 fMCperiodTPC(),
  62 fMCperiodUser(),
  63 fCurrentFile(),
  64 fRecoPass(0),
  65 fRecoPassUser(-1),
  66 fRun(0),
  67 fOldRun(0),
  68 fArrPidResponseMaster(0x0),
  69 fResolutionCorrection(0x0),
  70 fTRDPIDParams(0x0),
  71 fTRDPIDReference(0x0),
  72 fTOFtail(1.1),
  73 fTOFPIDParams(0x0),
  74 fEMCALPIDParams(0x0),
  75 fCurrentEvent(0x0),
  76 fCurrCentrality(0.0)
  77 {
  78   //
  79   // default ctor
  80   //
  81   AliLog::SetClassDebugLevel("AliPIDResponse",10);
  82   AliLog::SetClassDebugLevel("AliESDpid",10);
  83   AliLog::SetClassDebugLevel("AliAODpidUtil",10);
  84
  85   memset(fTRDslicesForPID,0,sizeof(UInt_t)*2);
  86 }
  87
  88 //______________________________________________________________________________
  89 AliPIDResponse::~AliPIDResponse()
  90 {
  91   //
  92   // dtor
  93   //
  94   delete fArrPidResponseMaster;
  95   delete fTRDPIDParams;
  96   delete fTRDPIDReference;
  97   if (fTOFPIDParams) delete fTOFPIDParams;
  98 }
  99
 100 //______________________________________________________________________________
 101 AliPIDResponse::AliPIDResponse(const AliPIDResponse &other) :
 102 TNamed(other),
 103 fITSResponse(other.fITSResponse),
 104 fTPCResponse(other.fTPCResponse),
 105 fTRDResponse(other.fTRDResponse),
 106 fTOFResponse(other.fTOFResponse),
 107 fEMCALResponse(other.fEMCALResponse),
 108 fRange(other.fRange),
 109 fITSPIDmethod(other.fITSPIDmethod),
 110 fIsMC(other.fIsMC),
 111 fOADBPath(other.fOADBPath),
 112 fBeamType("PP"),
 113 fLHCperiod(),
 114 fMCperiodTPC(),
 115 fMCperiodUser(other.fMCperiodUser),
 116 fCurrentFile(),
 117 fRecoPass(0),
 118 fRecoPassUser(other.fRecoPassUser),
 119 fRun(0),
 120 fOldRun(0),
 121 fArrPidResponseMaster(0x0),
 122 fResolutionCorrection(0x0),
 123 fTRDPIDParams(0x0),
 124 fTRDPIDReference(0x0),
 125 fTOFtail(1.1),
 126 fTOFPIDParams(0x0),
 127 fEMCALPIDParams(0x0),
 128 fCurrentEvent(0x0),
 129 fCurrCentrality(0.0)
 130 {
 131   //
 132   // copy ctor
 133   //
 134   memset(fTRDslicesForPID,0,sizeof(UInt_t)*2);
 135 }
 136
 137 //______________________________________________________________________________
 138 AliPIDResponse& AliPIDResponse::operator=(const AliPIDResponse &other)
 139 {
 140   //
 141   // copy ctor
 142   //
 143   if(this!=&other) {
 144     delete fArrPidResponseMaster;
 145     TNamed::operator=(other);
 146     fITSResponse=other.fITSResponse;
 147     fTPCResponse=other.fTPCResponse;
 148     fTRDResponse=other.fTRDResponse;
 149     fTOFResponse=other.fTOFResponse;
 150     fEMCALResponse=other.fEMCALResponse;
 151     fRange=other.fRange;
 152     fITSPIDmethod=other.fITSPIDmethod;
 153     fOADBPath=other.fOADBPath;
 154     fIsMC=other.fIsMC;
 155     fBeamType="PP";
 156     fLHCperiod="";
 157     fMCperiodTPC="";
 158     fMCperiodUser=other.fMCperiodUser;
 159     fCurrentFile="";
 160     fRecoPass=0;
 161     fRecoPassUser=other.fRecoPassUser;
 162     fRun=0;
 163     fOldRun=0;
 164     fArrPidResponseMaster=0x0;
 165     fResolutionCorrection=0x0;
 166     fTRDPIDParams=0x0;
 167     fTRDPIDReference=0x0;
 168     fEMCALPIDParams=0x0;
 169     memset(fTRDslicesForPID,0,sizeof(UInt_t)*2);
 170     fTOFtail=1.1;
 171     fTOFPIDParams=0x0;
 172     fCurrentEvent=other.fCurrentEvent;
 173   }
 174   return *this;
 175 }
 176
 177 //______________________________________________________________________________
 178 Float_t AliPIDResponse::NumberOfSigmas(EDetCode detCode, const AliVParticle *track, AliPID::EParticleType type) const
 179 {
 180   //
 181   // NumberOfSigmas for 'detCode'
 182   //
 183
 184   switch (detCode){
 185     case kDetITS: return NumberOfSigmasITS(track, type); break;
 186     case kDetTPC: return NumberOfSigmasTPC(track, type); break;
 187     case kDetTOF: return NumberOfSigmasTOF(track, type); break;
 188 //     case kDetTRD: return ComputeTRDProbability(track, type); break;
 189 //     case kDetPHOS: return ComputePHOSProbability(track, type); break;
 190 //     case kDetEMCAL: return NumberOfSigmasEMCAL(track, type); break;
 191 //     case kDetHMPID: return ComputeHMPIDProbability(track, type); break;
 192     default: return -999.;
 193   }
 194
 195 }
 196
 197 //______________________________________________________________________________
 198 Float_t AliPIDResponse::NumberOfSigmasEMCAL(const AliVTrack *track, AliPID::EParticleType type) const {
 199
 200   AliVCluster *matchedClus = NULL;
 201
 202   Double_t mom     = -1.;
 203   Double_t pt      = -1.;
 204   Double_t EovP    = -1.;
 205   Double_t fClsE   = -1.;
 206
 207   Int_t nMatchClus = -1;
 208   Int_t charge     = 0;
 209
 210   // Track matching
 211   nMatchClus = track->GetEMCALcluster();
 212   if(nMatchClus > -1){
 213
 214     mom    = track->P();
 215     pt     = track->Pt();
 216     charge = track->Charge();
 217
 218     matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus);
 219
 220     if(matchedClus){
 221
 222       // matched cluster is EMCAL
 223       if(matchedClus->IsEMCAL()){
 224
 225         fClsE       = matchedClus->E();
 226         EovP        = fClsE/mom;
 227
 228
 229         // NSigma value really meaningful only for electrons!
 230         return fEMCALResponse.GetNumberOfSigmas(pt,EovP,type,charge);
 231       }
 232     }
 233   }
 234
 235   return -999;
 236
 237 }
 238
 239 //______________________________________________________________________________
 240 Float_t  AliPIDResponse::NumberOfSigmasEMCAL(const AliVTrack *track, AliPID::EParticleType type, Double_t &eop, Double_t showershape[4]) const {
 241
 242   AliVCluster *matchedClus = NULL;
 243
 244   Double_t mom     = -1.;
 245   Double_t pt      = -1.;
 246   Double_t EovP    = -1.;
 247   Double_t fClsE   = -1.;
 248
 249   Int_t nMatchClus = -1;
 250   Int_t charge     = 0;
 251
 252   // Track matching
 253   nMatchClus = track->GetEMCALcluster();
 254   if(nMatchClus > -1){
 255
 256     mom    = track->P();
 257     pt     = track->Pt();
 258     charge = track->Charge();
 259
 260     matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus);
 261
 262     if(matchedClus){
 263
 264       // matched cluster is EMCAL
 265       if(matchedClus->IsEMCAL()){
 266
 267         fClsE       = matchedClus->E();
 268         EovP        = fClsE/mom;
 269
 270         // fill used EMCAL variables here
 271         eop            = EovP; // E/p
 272         showershape[0] = matchedClus->GetNCells(); // number of cells in cluster
 273         showershape[1] = matchedClus->GetM02(); // long axis
 274         showershape[2] = matchedClus->GetM20(); // short axis
 275         showershape[3] = matchedClus->GetDispersion(); // dispersion
 276
 277         // NSigma value really meaningful only for electrons!
 278         return fEMCALResponse.GetNumberOfSigmas(pt,EovP,type,charge);
 279       }
 280     }
 281   }
 282   return -999;
 283 }
 284
 285
 286 //______________________________________________________________________________
 287 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputePIDProbability  (EDetCode detCode,  const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 288 {
 289   //
 290   // Compute PID response of 'detCode'
 291   //
 292
 293   switch (detCode){
 294     case kDetITS: return ComputeITSProbability(track, nSpecies, p); break;
 295     case kDetTPC: return ComputeTPCProbability(track, nSpecies, p); break;
 296     case kDetTOF: return ComputeTOFProbability(track, nSpecies, p); break;
 297     case kDetTRD: return ComputeTRDProbability(track, nSpecies, p); break;
 298     case kDetPHOS: return ComputePHOSProbability(track, nSpecies, p); break;
 299     case kDetEMCAL: return ComputeEMCALProbability(track, nSpecies, p); break;
 300     case kDetHMPID: return ComputeHMPIDProbability(track, nSpecies, p); break;
 301     default: return kDetNoSignal;
 302   }
 303 }
 304
 305 //______________________________________________________________________________
 306 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeITSProbability  (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 307 {
 308   //
 309   // Compute PID response for the ITS
 310   //
 311
 312   // set flat distribution (no decision)
 313   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 314
 315   if ((track->GetStatus()&AliVTrack::kITSin)==0 &&
 316     (track->GetStatus()&AliVTrack::kITSout)==0) return kDetNoSignal;
 317
 318   Double_t mom=track->P();
 319   Double_t dedx=track->GetITSsignal();
 320   Bool_t isSA=kTRUE;
 321   Double_t momITS=mom;
 322   ULong_t trStatus=track->GetStatus();
 323   if(trStatus&AliVTrack::kTPCin) isSA=kFALSE;
 324   UChar_t clumap=track->GetITSClusterMap();
 325   Int_t nPointsForPid=0;
 326   for(Int_t i=2; i<6; i++){
 327     if(clumap&(1<<i)) ++nPointsForPid;
 328   }
 329
 330   if(nPointsForPid<3) { // track not to be used for combined PID purposes
 331     //       track->ResetStatus(AliVTrack::kITSpid);
 332     return kDetNoSignal;
 333   }
 334
 335   Bool_t mismatch=kTRUE/*, heavy=kTRUE*/;
 336   for (Int_t j=0; j<AliPID::kSPECIES; j++) {
 337     Double_t mass=AliPID::ParticleMass(j);//GeV/c^2
 338     Double_t bethe=fITSResponse.Bethe(momITS,mass);
 339     Double_t sigma=fITSResponse.GetResolution(bethe,nPointsForPid,isSA);
 340     if (TMath::Abs(dedx-bethe) > fRange*sigma) {
 341       p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
 342     } else {
 343       p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
 344       mismatch=kFALSE;
 345     }
 346
 347     // Check for particles heavier than (AliPID::kSPECIES - 1)
 348     //       if (dedx < (bethe + fRange*sigma)) heavy=kFALSE;
 349
 350   }
 351
 352   if (mismatch){
 353     for (Int_t j=0; j<AliPID::kSPECIES; j++) p[j]=1./AliPID::kSPECIES;
 354     return kDetNoSignal;
 355   }
 356
 357
 358   return kDetPidOk;
 359 }
 360 //______________________________________________________________________________
 361 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTPCProbability  (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 362 {
 363   //
 364   // Compute PID response for the TPC
 365   //
 366
 367   // set flat distribution (no decision)
 368   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 369
 370   // check quality of the track
 371   if ( (track->GetStatus()&AliVTrack::kTPCin )==0 && (track->GetStatus()&AliVTrack::kTPCout)==0 ) return kDetNoSignal;
 372
 373   Double_t mom = track->GetTPCmomentum();
 374
 375   Double_t dedx=track->GetTPCsignal();
 376   Bool_t mismatch=kTRUE/*, heavy=kTRUE*/;
 377
 378   for (Int_t j=0; j<AliPID::kSPECIES; j++) {
 379     AliPID::EParticleType type=AliPID::EParticleType(j);
 380     Double_t bethe=fTPCResponse.GetExpectedSignal(mom,type);
 381     Double_t sigma=fTPCResponse.GetExpectedSigma(mom,track->GetTPCsignalN(),type);
 382     if (TMath::Abs(dedx-bethe) > fRange*sigma) {
 383       p[j]=TMath::Exp(-0.5*fRange*fRange)/sigma;
 384     } else {
 385       p[j]=TMath::Exp(-0.5*(dedx-bethe)*(dedx-bethe)/(sigma*sigma))/sigma;
 386       mismatch=kFALSE;
 387     }
 388
 389     // TODO: Light nuclei, also in TPC pid response
 390
 391     // Check for particles heavier than (AliPID::kSPECIES - 1)
 392 //     if (dedx < (bethe + fRange*sigma)) heavy=kFALSE;
 393
 394   }
 395
 396   if (mismatch){
 397     for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 398     return kDetNoSignal;
 399   }
 400
 401   return kDetPidOk;
 402 }
 403 //______________________________________________________________________________
 404 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTOFProbability  (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 405 {
 406   //
 407   // Compute PID response for the
 408   //
 409
 410   Double_t meanCorrFactor = 0.11/fTOFtail; // Correction factor on the mean because of the tail (should be ~ 0.1 with tail = 1.1)
 411
 412   // set flat distribution (no decision)
 413   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 414
 415   if ((track->GetStatus()&AliVTrack::kTOFout)==0) return kDetNoSignal;
 416   if ((track->GetStatus()&AliVTrack::kTIME)==0) return kDetNoSignal;
 417
 418   Double_t time[AliPID::kSPECIESN];
 419   track->GetIntegratedTimes(time);
 420
 421   Double_t sigma[AliPID::kSPECIES];
 422   for (Int_t iPart = 0; iPart < AliPID::kSPECIES; iPart++) {
 423     sigma[iPart] = fTOFResponse.GetExpectedSigma(track->P(),time[iPart],AliPID::ParticleMass(iPart));
 424   }
 425
 426   Bool_t mismatch = kTRUE/*, heavy = kTRUE*/;
 427   for (Int_t j=0; j<AliPID::kSPECIES; j++) {
 428     AliPID::EParticleType type=AliPID::EParticleType(j);
 429     Double_t nsigmas=NumberOfSigmasTOF(track,type) + meanCorrFactor;
 430
 431     Double_t sig = sigma[j];
 432     if (TMath::Abs(nsigmas) > (fRange+2)) {
 433       if(nsigmas < fTOFtail)
 434         p[j] = TMath::Exp(-0.5*(fRange+2)*(fRange+2))/sig;
 435       else
 436         p[j] = TMath::Exp(-(fRange+2 - fTOFtail*0.5)*fTOFtail)/sig;
 437     } else{
 438       if(nsigmas < fTOFtail)
 439         p[j] = TMath::Exp(-0.5*nsigmas*nsigmas)/sig;
 440       else
 441         p[j] = TMath::Exp(-(nsigmas - fTOFtail*0.5)*fTOFtail)/sig;
 442     }
 443
 444     /* OLD Gaussian shape
 445     if (TMath::Abs(nsigmas) > (fRange+2)) {
 446       p[j] = TMath::Exp(-0.5*(fRange+2)*(fRange+2))/sig;
 447     } else
 448       p[j] = TMath::Exp(-0.5*nsigmas*nsigmas)/sig;
 449     */
 450
 451     if (TMath::Abs(nsigmas)<5.){
 452       Double_t nsigmasTPC=NumberOfSigmasTPC(track,type);
 453       if (TMath::Abs(nsigmasTPC)<5.) mismatch=kFALSE;
 454     }
 455   }
 456
 457   if (mismatch){
 458     return kDetMismatch;
 459   }
 460
 461     // TODO: Light nuclei
 462
 463   return kDetPidOk;
 464 }
 465 //______________________________________________________________________________
 466 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeTRDProbability  (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 467 {
 468   //
 469   // Compute PID response for the
 470   //
 471
 472   // set flat distribution (no decision)
 473   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 474   if((track->GetStatus()&AliVTrack::kTRDout)==0) return kDetNoSignal;
 475
 476   Float_t mom[6];
 477   Double_t dedx[48];  // Allocate space for the maximum number of TRD slices
 478   Int_t nslices = fTRDslicesForPID[1] - fTRDslicesForPID[0] + 1;
 479   AliDebug(1, Form("First Slice: %d, Last Slice: %d, Number of slices: %d",  fTRDslicesForPID[0], fTRDslicesForPID[1], nslices));
 480   for(UInt_t ilayer = 0; ilayer < 6; ilayer++){
 481     mom[ilayer] = track->GetTRDmomentum(ilayer);
 482     for(UInt_t islice = fTRDslicesForPID[0]; islice <= fTRDslicesForPID[1]; islice++){
 483       dedx[ilayer*nslices+islice-fTRDslicesForPID[0]] = track->GetTRDslice(ilayer, islice);
 484     }
 485   }
 486   fTRDResponse.GetResponse(nslices, dedx, mom, p);
 487   return kDetPidOk;
 488 }
 489 //______________________________________________________________________________
 490 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeEMCALProbability  (const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 491 {
 492   //
 493   // Compute PID response for the EMCAL
 494   //
 495
 496   AliVCluster *matchedClus = NULL;
 497
 498   Double_t mom     = -1.;
 499   Double_t pt      = -1.;
 500   Double_t EovP    = -1.;
 501   Double_t fClsE   = -1.;
 502
 503   Int_t nMatchClus = -1;
 504   Int_t charge     = 0;
 505
 506   // Track matching
 507   nMatchClus = track->GetEMCALcluster();
 508
 509   if(nMatchClus > -1){
 510
 511     mom    = track->P();
 512     pt     = track->Pt();
 513     charge = track->Charge();
 514
 515     matchedClus = (AliVCluster*)fCurrentEvent->GetCaloCluster(nMatchClus);
 516
 517     if(matchedClus){
 518
 519     // matched cluster is EMCAL
 520     if(matchedClus->IsEMCAL()){
 521
 522       fClsE       = matchedClus->E();
 523       EovP        = fClsE/mom;
 524
 525
 526       // compute the probabilities
 527       if( 999 != fEMCALResponse.ComputeEMCALProbability(pt,EovP,charge,p)){
 528
 529         // in case everything is OK
 530         return kDetPidOk;
 531
 532       }
 533     }
 534   }
 535   }
 536
 537   // in all other cases set flat distribution (no decision)
 538   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 539   return kDetNoSignal;
 540
 541 }
 542 //______________________________________________________________________________
 543 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputePHOSProbability (const AliVTrack */*track*/, Int_t nSpecies, Double_t p[]) const
 544 {
 545   //
 546   // Compute PID response for the PHOS
 547   //
 548
 549   // set flat distribution (no decision)
 550   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 551   return kDetNoSignal;
 552 }
 553 //______________________________________________________________________________
 554 AliPIDResponse::EDetPidStatus AliPIDResponse::ComputeHMPIDProbability(const AliVTrack *track, Int_t nSpecies, Double_t p[]) const
 555 {
 556   //
 557   // Compute PID response for the HMPID
 558   //
 559
 560   // set flat distribution (no decision)
 561   for (Int_t j=0; j<nSpecies; j++) p[j]=1./nSpecies;
 562   if((track->GetStatus()&AliVTrack::kHMPIDpid)==0) return kDetNoSignal;
 563
 564   track->GetHMPIDpid(p);
 565
 566   return kDetPidOk;
 567 }
 568
 569 //______________________________________________________________________________
 570 void AliPIDResponse::InitialiseEvent(AliVEvent *event, Int_t pass)
 571 {
 572   //
 573   // Apply settings for the current event
 574   //
 575   fRecoPass=pass;
 576
 577   fCurrentEvent=0x0;
 578   if (!event) return;
 579   fCurrentEvent=event;
 580   fRun=event->GetRunNumber();
 581
 582   if (fRun!=fOldRun){
 583     ExecNewRun();
 584     fOldRun=fRun;
 585   }
 586
 587   //TPC resolution parametrisation PbPb
 588   if ( fResolutionCorrection ){
 589     Double_t corrSigma=fResolutionCorrection->Eval(GetTPCMultiplicityBin(event));
 590     fTPCResponse.SetSigma(3.79301e-03*corrSigma, 2.21280e+04);
 591   }
 592
 593   //TOF resolution
 594   SetTOFResponse(event, (AliPIDResponse::EStartTimeType_t)fTOFPIDParams->GetStartTimeMethod());
 595
 596
 597   // Get and set centrality
 598   AliCentrality *centrality = event->GetCentrality();
 599   if(centrality){
 600     fCurrCentrality = centrality->GetCentralityPercentile("V0M");
 601   }
 602   else{
 603     fCurrCentrality = -1;
 604   }
 605 }
 606
 607 //______________________________________________________________________________
 608 void AliPIDResponse::ExecNewRun()
 609 {
 610   //
 611   // Things to Execute upon a new run
 612   //
 613   SetRecoInfo();
 614
 615   SetITSParametrisation();
 616
 617   SetTPCPidResponseMaster();
 618   SetTPCParametrisation();
 619
 620   SetTRDPidResponseMaster();
 621   InitializeTRDResponse();
 622
 623   SetEMCALPidResponseMaster();
 624   InitializeEMCALResponse();
 625
 626   SetTOFPidResponseMaster();
 627   InitializeTOFResponse();
 628 }
 629
 630 //_____________________________________________________
 631 Double_t AliPIDResponse::GetTPCMultiplicityBin(const AliVEvent * const event)
 632 {
 633   //
 634   // Get TPC multiplicity in bins of 150
 635   //
 636
 637   const AliVVertex* vertexTPC = event->GetPrimaryVertex();
 638   Double_t tpcMulti=0.;
 639   if(vertexTPC){
 640     Double_t vertexContribTPC=vertexTPC->GetNContributors();
 641     tpcMulti=vertexContribTPC/150.;
 642     if (tpcMulti>20.) tpcMulti=20.;
 643   }
 644
 645   return tpcMulti;
 646 }
 647
 648 //______________________________________________________________________________
 649 void AliPIDResponse::SetRecoInfo()
 650 {
 651   //
 652   // Set reconstruction information
 653   //
 654
 655   //reset information
 656   fLHCperiod="";
 657   fMCperiodTPC="";
 658
 659   fBeamType="";
 660
 661   fBeamType="PP";
 662
 663   TPRegexp reg(".*(LHC11[a-z]+[0-9]+[a-z_]*)/.*");
 664   //find the period by run number (UGLY, but not stored in ESD and AOD... )
 665   if (fRun>=114737&&fRun<=117223)      { fLHCperiod="LHC10B"; fMCperiodTPC="LHC10D1";  }
 666   else if (fRun>=118503&&fRun<=121040) { fLHCperiod="LHC10C"; fMCperiodTPC="LHC10D1";  }
 667   else if (fRun>=122195&&fRun<=126437) { fLHCperiod="LHC10D"; fMCperiodTPC="LHC10F6A"; }
 668   else if (fRun>=127710&&fRun<=130850) { fLHCperiod="LHC10E"; fMCperiodTPC="LHC10F6A"; }
 669   else if (fRun>=133004&&fRun<=135029) { fLHCperiod="LHC10F"; fMCperiodTPC="LHC10F6A"; }
 670   else if (fRun>=135654&&fRun<=136377) { fLHCperiod="LHC10G"; fMCperiodTPC="LHC10F6A"; }
 671   else if (fRun>=136851&&fRun<=139517) {
 672     fLHCperiod="LHC10H";
 673     fMCperiodTPC="LHC10H8";
 674     if (reg.MatchB(fCurrentFile)) fMCperiodTPC="LHC11A10";
 675     fBeamType="PBPB";
 676   }
 677   else if (fRun>=139699&&fRun<=146860) { fLHCperiod="LHC11A"; fMCperiodTPC="LHC10F6A"; }
 678   //TODO: periods 11B, 11C are not yet treated assume 11d for the moment
 679   else if (fRun>=148531&&fRun<=155384) { fLHCperiod="LHC11D"; fMCperiodTPC="LHC10F6A"; }
 680   else if (fRun>=156477&&fRun<=159635) { fLHCperiod="LHC11D"; fMCperiodTPC="LHC10F6A"; }
 681   else if (fRun>=166529) {
 682     fLHCperiod="LHC11H";
 683     fMCperiodTPC="LHC11A10";
 684     fBeamType="PBPB";
 685   }
 686
 687
 688   //exception new pp MC productions from 2011
 689   if (fBeamType=="PP" && reg.MatchB(fCurrentFile)) fMCperiodTPC="LHC11B2";
 690   // exception for 11f1
 691   if (fCurrentFile.Contains("LHC11f1/")) fMCperiodTPC="LHC11F1";
 692 }
 693
 694 //______________________________________________________________________________
 695 void AliPIDResponse::SetITSParametrisation()
 696 {
 697   //
 698   // Set the ITS parametrisation
 699   //
 700 }
 701
 702 //______________________________________________________________________________
 703 void AliPIDResponse::SetTPCPidResponseMaster()
 704 {
 705   //
 706   // Load the TPC pid response functions from the OADB
 707   //
 708   //don't load twice for the moment
 709    if (fArrPidResponseMaster) return;
 710
 711
 712   //reset the PID response functions
 713   delete fArrPidResponseMaster;
 714   fArrPidResponseMaster=0x0;
 715
 716   TString fileName(Form("%s/COMMON/PID/data/TPCPIDResponse.root", fOADBPath.Data()));
 717
 718   TFile *f=TFile::Open(fileName.Data());
 719   if (f && f->IsOpen() && !f->IsZombie()){
 720     fArrPidResponseMaster=dynamic_cast<TObjArray*>(f->Get("TPCPIDResponse"));
 721   }
 722   delete f;
 723
 724   if (!fArrPidResponseMaster){
 725     AliFatal(Form("Could not retrieve the TPC pid response from: %s",fileName.Data()));
 726     return;
 727   }
 728   fArrPidResponseMaster->SetOwner();
 729 }
 730
 731 //______________________________________________________________________________
 732 void AliPIDResponse::SetTPCParametrisation()
 733 {
 734   //
 735   // Change BB parametrisation for current run
 736   //
 737
 738   if (fLHCperiod.IsNull()) {
 739     AliFatal("No period set, not changing parametrisation");
 740     return;
 741   }
 742
 743   //
 744   // Set default parametrisations for data and MC
 745   //
 746
 747   //data type
 748   TString datatype="DATA";
 749   //in case of mc fRecoPass is per default 1
 750   if (fIsMC) {
 751     datatype="MC";
 752     fRecoPass=1;
 753   }
 754
 755   //
 756   //reset old splines
 757   //
 758   for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){
 759     fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,0x0);
 760   }
 761
 762   // period
 763   TString period=fLHCperiod;
 764   if (fIsMC) period=fMCperiodTPC;
 765
 766   AliInfo(Form("Searching splines for: %s %s PASS%d %s",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data()));
 767   Bool_t found=kFALSE;
 768   //
 769   //set the new PID splines
 770   //
 771   if (fArrPidResponseMaster){
 772     TObject *grAll=0x0;
 773     //for MC don't use period information
 774 //     if (fIsMC) period="[A-Z0-9]*";
 775     //for MC use MC period information
 776 //pattern for the default entry (valid for all particles)
 777     TPRegexp reg(Form("TSPLINE3_%s_([A-Z]*)_%s_PASS%d_%s_MEAN",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data()));
 778
 779     //loop over entries and filter them
 780     for (Int_t iresp=0; iresp<fArrPidResponseMaster->GetEntriesFast();++iresp){
 781       TObject *responseFunction=fArrPidResponseMaster->At(iresp);
 782       if (responseFunction==0x0) continue;
 783       TString responseName=responseFunction->GetName();
 784
 785       if (!reg.MatchB(responseName)) continue;
 786
 787       TObjArray *arr=reg.MatchS(responseName);
 788       TString particleName=arr->At(1)->GetName();
 789       delete arr;
 790       if (particleName.IsNull()) continue;
 791       if (particleName=="ALL") grAll=responseFunction;
 792       else {
 793         //find particle id
 794         for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){
 795           TString particle=AliPID::ParticleName(ispec);
 796           particle.ToUpper();
 797           if ( particle == particleName ){
 798             fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,responseFunction);
 799             fTPCResponse.SetUseDatabase(kTRUE);
 800             AliInfo(Form("Adding graph: %d - %s",ispec,responseFunction->GetName()));
 801             found=kTRUE;
 802             break;
 803           }
 804         }
 805       }
 806     }
 807
 808     //set default response function to all particles which don't have a specific one
 809     if (grAll){
 810       for (Int_t ispec=0; ispec<AliPID::kSPECIES; ++ispec){
 811         if (!fTPCResponse.GetResponseFunction((AliPID::EParticleType)ispec)){
 812           fTPCResponse.SetResponseFunction((AliPID::EParticleType)ispec,grAll);
 813           AliInfo(Form("Adding graph: %d - %s",ispec,grAll->GetName()));
 814           found=kTRUE;
 815         }
 816       }
 817     }
 818   }
 819
 820   if (!found){
 821     AliError(Form("No splines found for: %s %s PASS%d %s",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data()));
 822   }
 823   //
 824   // Setup resolution parametrisation
 825   //
 826
 827   //default
 828   fTPCResponse.SetSigma(3.79301e-03, 2.21280e+04);
 829
 830   if (fRun>=122195){
 831     fTPCResponse.SetSigma(2.30176e-02, 5.60422e+02);
 832   }
 833   if (fArrPidResponseMaster)
 834   fResolutionCorrection=(TF1*)fArrPidResponseMaster->FindObject(Form("TF1_%s_ALL_%s_PASS%d_%s_SIGMA",datatype.Data(),period.Data(),fRecoPass,fBeamType.Data()));
 835
 836   if (fResolutionCorrection) AliInfo(Form("Setting multiplicity correction function: %s",fResolutionCorrection->GetName()));
 837 }
 838
 839 //______________________________________________________________________________
 840 void AliPIDResponse::SetTRDPidResponseMaster()
 841 {
 842   //
 843   // Load the TRD pid params and references from the OADB
 844   //
 845   if(fTRDPIDParams) return;
 846   AliOADBContainer contParams("contParams");
 847
 848   Int_t statusPars = contParams.InitFromFile(Form("%s/COMMON/PID/data/TRDPIDParams.root", fOADBPath.Data()), "AliTRDPIDParams");
 849   if(statusPars){
 850     AliError("Failed initializing PID Params from OADB");
 851   } else {
 852     AliInfo(Form("Loading TRD Params from %s/COMMON/PID/data/TRDPIDParams.root", fOADBPath.Data()));
 853     fTRDPIDParams = dynamic_cast<AliTRDPIDParams *>(contParams.GetObject(fRun));
 854     if(!fTRDPIDParams){
 855       AliError(Form("TRD Params not found in run %d", fRun));
 856     }
 857   }
 858
 859   AliOADBContainer contRefs("contRefs");
 860   Int_t statusRefs = contRefs.InitFromFile(Form("%s/COMMON/PID/data/TRDPIDReferenceLQ1D.root", fOADBPath.Data()), "AliTRDPIDReference");
 861   if(statusRefs){
 862     AliInfo("Failed Loading References for TRD");
 863   } else {
 864     AliInfo(Form("Loading TRD References from %s/COMMON/PID/data/TRDPIDReferenceLQ1D.root", fOADBPath.Data()));
 865     fTRDPIDReference = dynamic_cast<AliTRDPIDReference *>(contRefs.GetObject(fRun));
 866     if(!fTRDPIDReference){
 867       AliError(Form("TRD References not found in OADB Container for run %d", fRun));
 868     }
 869   }
 870 }
 871
 872 //______________________________________________________________________________
 873 void AliPIDResponse::InitializeTRDResponse(){
 874   //
 875   // Set PID Params and references to the TRD PID response
 876   //
 877   fTRDResponse.SetPIDParams(fTRDPIDParams);
 878   fTRDResponse.Load(fTRDPIDReference);
 879   if(fLHCperiod == "LHC10b" || fLHCperiod == "LHC10c" || fLHCperiod == "LHC10d" || fLHCperiod == "LHC10e"){
 880     fTRDslicesForPID[0] = 0;
 881     fTRDslicesForPID[1] = 7;
 882   }
 883 }
 884
 885 //______________________________________________________________________________
 886 void AliPIDResponse::SetTOFPidResponseMaster()
 887 {
 888   //
 889   // Load the TOF pid params from the OADB
 890   //
 891   TFile *oadbf = new TFile(Form("%s/COMMON/PID/data/TOFPIDParams.root",fOADBPath.Data()));
 892   if (oadbf->IsOpen()) {
 893     AliInfo(Form("Loading TOF Params from %s/COMMON/PID/data/TOFPIDParams.root", fOADBPath.Data()));
 894     AliOADBContainer *oadbc = (AliOADBContainer *)oadbf->Get("TOFoadb");
 895     if (fTOFPIDParams) delete fTOFPIDParams;
 896     fTOFPIDParams = dynamic_cast<AliTOFPIDParams *>(oadbc->GetObject(fRun,"TOFparams"));
 897     oadbf->Close();
 898     delete oadbc;
 899   } else {
 900     AliError(Form("TOFPIDParams.root not found in %s/COMMON/PID/data !!",fOADBPath.Data()));
 901   }
 902   delete oadbf;
 903
 904   }
 905
 906 //______________________________________________________________________________
 907 void AliPIDResponse::InitializeTOFResponse(){
 908   //
 909   // Set PID Params to the TOF PID response
 910   //
 911   for (Int_t i=0;i<4;i++) {
 912     fTOFResponse.SetTrackParameter(i,fTOFPIDParams->GetSigParams(i));
 913   }
 914   fTOFResponse.SetTimeResolution(fTOFPIDParams->GetTOFresolution());
 915
 916 }
 917
 918
 919 //_________________________________________________________________________
 920 Bool_t AliPIDResponse::IdentifiedAsElectronTRD(const AliVTrack *vtrack, Double_t efficiencyLevel) const {
 921   //
 922   // Check whether track is identified as electron under a given electron efficiency hypothesis
 923   //
 924   Double_t probs[AliPID::kSPECIES];
 925   ComputeTRDProbability(vtrack, AliPID::kSPECIES, probs);
 926
 927   Int_t ntracklets = vtrack->GetTRDntrackletsPID();
 928   // Take mean of the TRD momenta in the given tracklets
 929   Float_t p = 0, trdmomenta[AliVTrack::kTRDnPlanes];
 930   Int_t nmomenta = 0;
 931   for(Int_t iPl=0;iPl<AliVTrack::kTRDnPlanes;iPl++){
 932     if(vtrack->GetTRDmomentum(iPl) > 0.){
 933       trdmomenta[nmomenta++] = vtrack->GetTRDmomentum(iPl);
 934     }
 935   }
 936   p = TMath::Mean(nmomenta, trdmomenta);
 937
 938   return fTRDResponse.IdentifiedAsElectron(ntracklets, probs, p, efficiencyLevel);
 939 }
 940
 941 //______________________________________________________________________________
 942 void AliPIDResponse::SetEMCALPidResponseMaster()
 943 {
 944   //
 945   // Load the EMCAL pid response functions from the OADB
 946   //
 947   TObjArray* fEMCALPIDParamsRun      = NULL;
 948   TObjArray* fEMCALPIDParamsPass     = NULL;
 949
 950   if(fEMCALPIDParams) return;
 951   AliOADBContainer contParams("contParams");
 952
 953   Int_t statusPars = contParams.InitFromFile(Form("%s/COMMON/PID/data/EMCALPIDParams.root", fOADBPath.Data()), "AliEMCALPIDParams");
 954   if(statusPars){
 955     AliError("Failed initializing PID Params from OADB");
 956   }
 957   else {
 958     AliInfo(Form("Loading EMCAL Params from %s/COMMON/PID/data/EMCALPIDParams.root", fOADBPath.Data()));
 959
 960     fEMCALPIDParamsRun = dynamic_cast<TObjArray *>(contParams.GetObject(fRun));
 961     if(fEMCALPIDParamsRun)  fEMCALPIDParamsPass = dynamic_cast<TObjArray *>(fEMCALPIDParamsRun->FindObject(Form("pass%d",fRecoPass)));
 962     if(fEMCALPIDParamsPass) fEMCALPIDParams     = dynamic_cast<TObjArray *>(fEMCALPIDParamsPass->FindObject(Form("EMCALPIDParams_Particles")));
 963
 964     if(!fEMCALPIDParams){
 965       AliInfo(Form("EMCAL Params not found in run %d pass %d", fRun, fRecoPass));
 966       AliInfo("Will take the standard LHC11d instead ...");
 967
 968       fEMCALPIDParamsRun = dynamic_cast<TObjArray *>(contParams.GetObject(156477));
 969       if(fEMCALPIDParamsRun)  fEMCALPIDParamsPass = dynamic_cast<TObjArray *>(fEMCALPIDParamsRun->FindObject(Form("pass%d",1)));
 970       if(fEMCALPIDParamsPass) fEMCALPIDParams     = dynamic_cast<TObjArray *>(fEMCALPIDParamsPass->FindObject(Form("EMCALPIDParams_Particles")));
 971
 972       if(!fEMCALPIDParams){
 973         AliError(Form("DEFAULT EMCAL Params (LHC11d) not found in file %s/COMMON/PID/data/EMCALPIDParams.root", fOADBPath.Data()));
 974       }
 975     }
 976   }
 977 }
 978
 979 //______________________________________________________________________________
 980 void AliPIDResponse::InitializeEMCALResponse(){
 981   //
 982   // Set PID Params to the EMCAL PID response
 983   //
 984   fEMCALResponse.SetPIDParams(fEMCALPIDParams);
 985
 986 }
 987 //_________________________________________________________________________
 988 void AliPIDResponse::SetTOFResponse(AliVEvent *vevent,EStartTimeType_t option){
 989   //
 990   // Set TOF response function
 991   // Input option for event_time used
 992   //
 993
 994     Float_t t0spread = 0.; //vevent->GetEventTimeSpread();
 995     if(t0spread < 10) t0spread = 80;
 996
 997     // T0 from TOF algorithm
 998
 999     Bool_t flagT0TOF=kFALSE;
1000     Bool_t flagT0T0=kFALSE;
1001     Float_t *startTime = new Float_t[fTOFResponse.GetNmomBins()];
1002     Float_t *startTimeRes = new Float_t[fTOFResponse.GetNmomBins()];
1003     Int_t *startTimeMask = new Int_t[fTOFResponse.GetNmomBins()];
1004
1005     // T0-TOF arrays
1006     Float_t *estimatedT0event = new Float_t[fTOFResponse.GetNmomBins()];
1007     Float_t *estimatedT0resolution = new Float_t[fTOFResponse.GetNmomBins()];
1008     for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1009       estimatedT0event[i]=0.0;
1010       estimatedT0resolution[i]=0.0;
1011       startTimeMask[i] = 0;
1012     }
1013
1014     Float_t resT0A=75,resT0C=65,resT0AC=55;
1015     if(vevent->GetT0TOF()){ // check if T0 detector information is available
1016         flagT0T0=kTRUE;
1017     }
1018
1019
1020     AliTOFHeader *tofHeader = (AliTOFHeader*)vevent->GetTOFHeader();
1021
1022     if (tofHeader) { // read global info and T0-TOF
1023       fTOFResponse.SetTimeResolution(tofHeader->GetTOFResolution());
1024       t0spread = tofHeader->GetT0spread(); // read t0 sprad
1025       if(t0spread < 10) t0spread = 80;
1026
1027       flagT0TOF=kTRUE;
1028       for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){ // read T0-TOF default value
1029         startTime[i]=tofHeader->GetDefaultEventTimeVal();
1030         startTimeRes[i]=tofHeader->GetDefaultEventTimeRes();
1031         if(startTimeRes[i] < 1.e-5) startTimeRes[i] = t0spread;
1032       }
1033
1034       TArrayI *ibin=(TArrayI*)tofHeader->GetNvalues();
1035       TArrayF *t0Bin=(TArrayF*)tofHeader->GetEventTimeValues();
1036       TArrayF *t0ResBin=(TArrayF*)tofHeader->GetEventTimeRes();
1037       for(Int_t j=0;j < tofHeader->GetNbins();j++){ // fill T0-TOF in p-bins
1038         Int_t icurrent = (Int_t)ibin->GetAt(j);
1039         startTime[icurrent]=t0Bin->GetAt(j);
1040         startTimeRes[icurrent]=t0ResBin->GetAt(j);
1041         if(startTimeRes[icurrent] < 1.e-5) startTimeRes[icurrent] = t0spread;
1042       }
1043     }
1044
1045     // for cut of 3 sigma on t0 spread
1046     Float_t t0cut = 3 * t0spread;
1047     if(t0cut < 500) t0cut = 500;
1048
1049     if(option == kFILL_T0){ // T0-FILL is used
1050         for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1051           estimatedT0event[i]=0.0;
1052           estimatedT0resolution[i]=t0spread;
1053         }
1054         fTOFResponse.SetT0event(estimatedT0event);
1055         fTOFResponse.SetT0resolution(estimatedT0resolution);
1056     }
1057
1058     if(option == kTOF_T0){ // T0-TOF is used when available (T0-FILL otherwise) from ESD
1059         if(flagT0TOF){
1060             fTOFResponse.SetT0event(startTime);
1061             fTOFResponse.SetT0resolution(startTimeRes);
1062             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1063               if(startTimeRes[i]<t0spread) startTimeMask[i]=1;
1064               fTOFResponse.SetT0binMask(i,startTimeMask[i]);
1065             }
1066         }
1067         else{
1068             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1069               estimatedT0event[i]=0.0;
1070               estimatedT0resolution[i]=t0spread;
1071               fTOFResponse.SetT0binMask(i,startTimeMask[i]);
1072             }
1073             fTOFResponse.SetT0event(estimatedT0event);
1074             fTOFResponse.SetT0resolution(estimatedT0resolution);
1075         }
1076     }
1077     else if(option == kBest_T0){ // T0-T0 or T0-TOF are used when available (T0-FILL otherwise) from ESD
1078         Float_t t0AC=-10000;
1079         Float_t t0A=-10000;
1080         Float_t t0C=-10000;
1081         if(flagT0T0){
1082             t0AC= vevent->GetT0TOF()[0];
1083             t0A= vevent->GetT0TOF()[1];
1084             t0C= vevent->GetT0TOF()[2];
1085         }
1086
1087         Float_t t0t0Best = 0;
1088         Float_t t0t0BestRes = 9999;
1089         Int_t t0used=0;
1090         if(TMath::Abs(t0A) < t0cut && TMath::Abs(t0C) < t0cut && TMath::Abs(t0C-t0A) < 500){
1091             t0t0Best = t0AC;
1092             t0t0BestRes = resT0AC;
1093             t0used=6;
1094         }
1095         else if(TMath::Abs(t0C) < t0cut){
1096             t0t0Best = t0C;
1097             t0t0BestRes = resT0C;
1098             t0used=4;
1099         }
1100         else if(TMath::Abs(t0A) < t0cut){
1101             t0t0Best = t0A;
1102             t0t0BestRes = resT0A;
1103             t0used=2;
1104         }
1105
1106         if(flagT0TOF){ // if T0-TOF info is available
1107             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1108                 if(t0t0BestRes < 999){
1109                   if(startTimeRes[i] < t0spread){
1110                     Double_t wtot = 1./startTimeRes[i]/startTimeRes[i] + 1./t0t0BestRes/t0t0BestRes;
1111                     Double_t t0best = startTime[i]/startTimeRes[i]/startTimeRes[i] + t0t0Best/t0t0BestRes/t0t0BestRes;
1112                     estimatedT0event[i]=t0best / wtot;
1113                     estimatedT0resolution[i]=1./TMath::Sqrt(wtot);
1114                     startTimeMask[i] = t0used+1;
1115                   }
1116                   else {
1117                     estimatedT0event[i]=t0t0Best;
1118                     estimatedT0resolution[i]=t0t0BestRes;
1119                     startTimeMask[i] = t0used;
1120                   }
1121                 }
1122                 else{
1123                   estimatedT0event[i]=startTime[i];
1124                   estimatedT0resolution[i]=startTimeRes[i];
1125                   if(startTimeRes[i]<t0spread) startTimeMask[i]=1;
1126                 }
1127                 fTOFResponse.SetT0binMask(i,startTimeMask[i]);
1128             }
1129             fTOFResponse.SetT0event(estimatedT0event);
1130             fTOFResponse.SetT0resolution(estimatedT0resolution);
1131         }
1132         else{ // if no T0-TOF info is available
1133             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1134               fTOFResponse.SetT0binMask(i,t0used);
1135               if(t0t0BestRes < 999){
1136                 estimatedT0event[i]=t0t0Best;
1137                 estimatedT0resolution[i]=t0t0BestRes;
1138               }
1139               else{
1140                 estimatedT0event[i]=0.0;
1141                 estimatedT0resolution[i]=t0spread;
1142               }
1143             }
1144             fTOFResponse.SetT0event(estimatedT0event);
1145             fTOFResponse.SetT0resolution(estimatedT0resolution);
1146         }
1147     }
1148
1149     else if(option == kT0_T0){ // T0-T0 is used when available (T0-FILL otherwise)
1150         Float_t t0AC=-10000;
1151         Float_t t0A=-10000;
1152         Float_t t0C=-10000;
1153         if(flagT0T0){
1154             t0AC= vevent->GetT0TOF()[0];
1155             t0A= vevent->GetT0TOF()[1];
1156             t0C= vevent->GetT0TOF()[2];
1157         }
1158
1159         if(TMath::Abs(t0A) < t0cut && TMath::Abs(t0C) < t0cut && TMath::Abs(t0C-t0A) < 500){
1160             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1161               estimatedT0event[i]=t0AC;
1162               estimatedT0resolution[i]=resT0AC;
1163               fTOFResponse.SetT0binMask(i,6);
1164             }
1165         }
1166         else if(TMath::Abs(t0C) < t0cut){
1167             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1168               estimatedT0event[i]=t0C;
1169               estimatedT0resolution[i]=resT0C;
1170               fTOFResponse.SetT0binMask(i,4);
1171             }
1172         }
1173         else if(TMath::Abs(t0A) < t0cut){
1174             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1175               estimatedT0event[i]=t0A;
1176               estimatedT0resolution[i]=resT0A;
1177               fTOFResponse.SetT0binMask(i,2);
1178             }
1179         }
1180         else{
1181             for(Int_t i=0;i<fTOFResponse.GetNmomBins();i++){
1182               estimatedT0event[i]=0.0;
1183               estimatedT0resolution[i]=t0spread;
1184               fTOFResponse.SetT0binMask(i,0);
1185             }
1186         }
1187         fTOFResponse.SetT0event(estimatedT0event);
1188         fTOFResponse.SetT0resolution(estimatedT0resolution);
1189     }
1190     delete [] startTime;
1191     delete [] startTimeRes;
1192     delete [] startTimeMask;
1193     delete [] estimatedT0event;
1194     delete [] estimatedT0resolution;
1195 }