/* $Id: AliCaloPID.cxx 21839 2007-10-29 13:49:42Z gustavo $ */
//_________________________________________________________________________
-// Class for track/cluster acceptance selection
-// Selection in Central barrel, EMCAL and PHOS
-//
+// Class for PID selection with calorimeters
+// The Output of the 2 main methods GetPdg is a PDG number identifying the cluster,
+// being kPhoton, kElectron, kPi0 ... as defined in the header file
+// - GetPdg(const TString calo, const Double_t * pid, const Float_t energy)
+// Reads the PID weights array of the ESDs and depending on its magnitude identifies the particle
+// - GetPdg(const TString calo,const TLorentzVector mom, const AliAODCaloCluster * cluster)
+// Recalcultes PID, the bayesian or any new one to be implemented in the future
+// Right now only the possibility to recalculate EMCAL with bayesian and simple PID.
+// In order to recalculate Bayesian, it is necessary to load the EMCALUtils library
+// and do SwitchOnBayesianRecalculation().
+// To change the PID parameters from Low to High like the ones by default, use the constructor
+// AliCaloPID(flux)
+// where flux is AliCaloPID::kLow or AliCaloPID::kHigh
+// If it is necessary to change the parameters use the constructor
+// AliCaloPID(AliEMCALPIDUtils *utils) and set the parameters before.
+// - SetPIDBits: Simple PID, depending on the thresholds fDispCut fTOFCut and even the
+// result of the PID bayesian a different PID bit is set.
+//
+// All these methods can be called in the analysis you are interested.
+//
//*-- Author: Gustavo Conesa (LNF-INFN)
//////////////////////////////////////////////////////////////////////////////
#include "AliCaloPID.h"
#include "AliAODCaloCluster.h"
#include "AliAODPWG4Particle.h"
-
+#include "AliEMCALPIDUtils.h"
ClassImp(AliCaloPID)
fPHOSElectronWeight(0.), fPHOSChargeWeight(0.) ,
fPHOSNeutralWeight(0.), fPHOSWeightFormula(0),
fPHOSPhotonWeightFormula(0x0), fPHOSPi0WeightFormula(0x0),
-fDispCut(0.),fTOFCut(0.), fDebug(-1)
+fDispCut(0.),fTOFCut(0.), fDebug(-1),
+fRecalculateBayesian(kFALSE), fParticleFlux(kLow), fEMCALPIDUtils(new AliEMCALPIDUtils)
{
//Ctor
InitParameters();
}
+//________________________________________________
+AliCaloPID::AliCaloPID(const Int_t flux) :
+TObject(), fEMCALPhotonWeight(0.), fEMCALPi0Weight(0.),
+fEMCALElectronWeight(0.), fEMCALChargeWeight(0.),
+fEMCALNeutralWeight(0.),
+fPHOSPhotonWeight(0.), fPHOSPi0Weight(0.),
+fPHOSElectronWeight(0.), fPHOSChargeWeight(0.) ,
+fPHOSNeutralWeight(0.), fPHOSWeightFormula(0),
+fPHOSPhotonWeightFormula(0x0), fPHOSPi0WeightFormula(0x0),
+fDispCut(0.),fTOFCut(0.), fDebug(-1),
+fRecalculateBayesian(kTRUE), fParticleFlux(flux), fEMCALPIDUtils(new AliEMCALPIDUtils)
+{
+ //Ctor
+
+ //Initialize parameters
+ InitParameters();
+}
+
+//________________________________________________
+AliCaloPID::AliCaloPID(const TTask * emcalpid) :
+TObject(), fEMCALPhotonWeight(0.), fEMCALPi0Weight(0.),
+fEMCALElectronWeight(0.), fEMCALChargeWeight(0.),
+fEMCALNeutralWeight(0.),
+fPHOSPhotonWeight(0.), fPHOSPi0Weight(0.),
+fPHOSElectronWeight(0.), fPHOSChargeWeight(0.) ,
+fPHOSNeutralWeight(0.), fPHOSWeightFormula(0),
+fPHOSPhotonWeightFormula(0x0), fPHOSPi0WeightFormula(0x0),
+fDispCut(0.),fTOFCut(0.), fDebug(-1),
+fRecalculateBayesian(kTRUE), fParticleFlux(-1), fEMCALPIDUtils( (AliEMCALPIDUtils*) emcalpid)
+{
+ //Ctor
+
+ //Initialize parameters
+ InitParameters();
+}
+
//____________________________________________________________________________
AliCaloPID::AliCaloPID(const AliCaloPID & pid) :
TObject(pid), fEMCALPhotonWeight(pid.fEMCALPhotonWeight),
fPHOSPhotonWeightFormula(pid.fPHOSPhotonWeightFormula),
fPHOSPi0WeightFormula(pid.fPHOSPi0WeightFormula),
fDispCut(pid.fDispCut),fTOFCut(pid.fTOFCut),
-fDebug(pid.fDebug)
+fDebug(pid.fDebug), fRecalculateBayesian(pid.fRecalculateBayesian),
+fParticleFlux(pid.fParticleFlux), fEMCALPIDUtils(pid.fEMCALPIDUtils)
{
// cpy ctor
fTOFCut = pid.fTOFCut;
fDebug = pid.fDebug;
+ fRecalculateBayesian = pid.fRecalculateBayesian;
+ fParticleFlux = pid.fParticleFlux;
+ fEMCALPIDUtils = pid.fEMCALPIDUtils;
+
return *this;
}
if(fPHOSPhotonWeightFormula) delete fPHOSPhotonWeightFormula ;
if(fPHOSPi0WeightFormula) delete fPHOSPi0WeightFormula ;
-
+ if(fEMCALPIDUtils) delete fEMCALPIDUtils ;
}
{
//Initialize the parameters of the PID.
- fEMCALPhotonWeight = 0.8 ;
+ fEMCALPhotonWeight = 0.5 ;
fEMCALPi0Weight = 0.5 ;
- fEMCALElectronWeight = 0.8 ;
+ fEMCALElectronWeight = 0.5 ;
fEMCALChargeWeight = 0.5 ;
fEMCALNeutralWeight = 0.5 ;
- fPHOSPhotonWeight = 0.75 ;
- fPHOSPi0Weight = 0.8 ;
+ fPHOSPhotonWeight = 0.5 ;
+ fPHOSPi0Weight = 0.5 ;
fPHOSElectronWeight = 0.5 ;
fPHOSChargeWeight = 0.5 ;
fPHOSNeutralWeight = 0.5 ;
fDispCut = 1.5;
fTOFCut = 5.e-9;
fDebug = -1;
+
+ if(fRecalculateBayesian){
+ if(fParticleFlux == kLow){
+ printf("AliCaloPID::Init() - SetLOWFluxParam\n");
+ fEMCALPIDUtils->SetLowFluxParam() ;
+ }
+ else if (fParticleFlux == kHigh){
+ printf("AliCaloPID::Init() - SetHIGHFluxParam\n");
+ fEMCALPIDUtils->SetHighFluxParam() ;
+ }
+ }
}
//_______________________________________________________________
abort();
}
- Float_t wPh = fPHOSPhotonWeight ;
+ Float_t wPh = fPHOSPhotonWeight ;
Float_t wPi0 = fPHOSPi0Weight ;
- Float_t wE = fPHOSElectronWeight ;
- Float_t wCh = fPHOSChargeWeight ;
- Float_t wNe = fPHOSNeutralWeight ;
+ Float_t wE = fPHOSElectronWeight ;
+ Float_t wCh = fPHOSChargeWeight ;
+ Float_t wNe = fPHOSNeutralWeight ;
if(calo == "PHOS" && fPHOSWeightFormula){
pdg = kNeutralUnknown ;
}
else{//EMCAL
- if(pid[AliAODCluster::kPhoton] > wPh) pdg = kPhoton ;
+
+ if(pid[AliAODCluster::kPhoton]+pid[AliAODCluster::kElectron] > wPh) pdg = kPhoton ; //temporal sollution until track matching for electrons is considered
+ //if(pid[AliAODCluster::kPhoton] > wPh) pdg = kPhoton ;
else if(pid[AliAODCluster::kPi0] > wPi0) pdg = kPi0 ;
- else if(pid[AliAODCluster::kElectron] > wE) pdg = kElectron ;
+ //else if(pid[AliAODCluster::kElectron] > wE) pdg = kElectron ;
else if(chargedHadronWeight + neutralHadronWeight > wCh) pdg = kChargedHadron ;
else if(neutralHadronWeight + chargedHadronWeight > wNe) pdg = kNeutralHadron ;
else pdg = kNeutralUnknown ;
//_______________________________________________________________
Int_t AliCaloPID::GetPdg(const TString calo,const TLorentzVector mom, const AliAODCaloCluster * cluster) const {
//Recalculated PID with all parameters
- if(fDebug > 0)printf("AliCaloPID::GetPdg: Calorimeter %s, E %3.2f, l0 %3.2f, l1 %3.2f, disp %3.2f, tof %1.11f, distCPV %3.2f, distToBC %1.1f, NMax %d\n",
- calo.Data(),mom.E(),cluster->GetM02(),cluster->GetM20(),cluster->GetDispersion(),cluster->GetTOF(),
- cluster->GetEmcCpvDistance(), cluster->GetDistToBadChannel(),cluster->GetNExMax());
-
+ Float_t lambda0 = cluster->GetM02();
+ Float_t energy = mom.E();
+
+ if(fDebug > 0) printf("AliCaloPID::GetPdg: Calorimeter %s, E %3.2f, l0 %3.2f, l1 %3.2f, disp %3.2f, tof %1.11f, distCPV %3.2f, distToBC %1.1f, NMax %d\n",
+ calo.Data(),energy,lambda0,cluster->GetM20(),cluster->GetDispersion(),cluster->GetTOF(),
+ cluster->GetEmcCpvDistance(), cluster->GetDistToBadChannel(),cluster->GetNExMax());
+
if(calo == "EMCAL") {
- if(cluster->GetM02()< 0.25) return kPhoton ;
- else return kNeutralHadron ;
+ //Recalculate Bayesian
+ if(fRecalculateBayesian){
+ if(fDebug > 0) {
+ const Double_t *pid0 = cluster->PID();
+ printf("AliCaloPID::GetPdg: BEFORE calo %s, ph %0.2f, pi0 %0.2f, el %0.2f, conv el %0.2f, hadrons: pion %0.2f, kaon %0.2f, proton %0.2f , neutron %0.2f, kaon %0.2f \n",
+ calo.Data(),pid0[AliAODCluster::kPhoton], pid0[AliAODCluster::kPi0],
+ pid0[AliAODCluster::kElectron], pid0[AliAODCluster::kEleCon],
+ pid0[AliAODCluster::kPion], pid0[AliAODCluster::kKaon], pid0[AliAODCluster::kProton],
+ pid0[AliAODCluster::kNeutron], pid0[AliAODCluster::kKaon0]);
+ }
+
+ fEMCALPIDUtils->ComputePID(energy, lambda0);
+ Double_t pid[AliPID::kSPECIESN];
+ for(Int_t i = 0; i < AliPID::kSPECIESN; i++) pid[i] = fEMCALPIDUtils->GetPIDFinal(i);
+ return GetPdg(calo, pid, energy);
+
+
+ }
+
+ // If no use of bayesian, simple PID
+ if(lambda0 < 0.25) return kPhoton ;
+ //else return kNeutralHadron ;
+ else return kPi0 ;
}
// if(calo == "PHOS") {
parList+=onePar ;
if(fPHOSWeightFormula){
- parList+="PHOS Photon Weight Formula: "+(fPHOSPhotonWeightFormula->GetExpFormula("p"));
- parList+="PHOS Pi0 Weight Formula: "+(fPHOSPi0WeightFormula->GetExpFormula("p"));
+ sprintf(onePar,"PHOS Photon Weight Formula: %s\n",(fPHOSPhotonWeightFormula->GetExpFormula("p")).Data()) ;
+ parList+=onePar;
+ sprintf(onePar,"PHOS Pi0 Weight Formula: %s\n",(fPHOSPi0WeightFormula->GetExpFormula("p")).Data()) ;
+ parList+=onePar;
}
return parList;
printf("TOF cut = %e\n",fTOFCut);
printf("Dispersion cut = %2.2f\n",fDispCut);
printf("Debug level = %d\n",fDebug);
-
+ printf("Recalculate Bayesian? = %d\n",fRecalculateBayesian);
+ if(fRecalculateBayesian) printf("Particle Flux? = %d\n",fParticleFlux);
printf(" \n");
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff