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 **************************************************************************/
19 //-----------------------------------------------------------------
20 // Implementation of the ESD Calorimeter cluster class
21 // ESD = Event Summary Data
22 // This is the class to deal with during the phisics analysis of data
25 //-----------------------------------------------------------------
27 #include <TLorentzVector.h>
28 #include "AliESDCaloCluster.h"
30 ClassImp(AliESDCaloCluster)
32 //_______________________________________________________________________
33 AliESDCaloCluster::AliESDCaloCluster() :
46 fEmcCpvDistance(1024),
47 fDistToBadChannel(1024),
53 // The default ESD constructor
55 fGlobalPos[0] = fGlobalPos[1] = fGlobalPos[2] = 0.;
56 for(Int_t i=0; i<AliPID::kSPECIESN; i++) fPID[i] = 0.;
59 //_______________________________________________________________________
60 AliESDCaloCluster::AliESDCaloCluster(const AliESDCaloCluster& clus) :
62 fTracksMatched(clus.fTracksMatched?new TArrayS(*clus.fTracksMatched):0x0),
63 fLabels(clus.fLabels?new TArrayS(*clus.fLabels):0x0),
64 fDigitAmplitude(clus.fDigitAmplitude?new TArrayS(*clus.fDigitAmplitude):0x0),
65 fDigitTime(clus.fDigitTime?new TArrayS(*clus.fDigitTime):0x0),
66 fDigitIndex(clus.fDigitIndex?new TArrayS(*clus.fDigitIndex):0x0),
67 fEnergy(clus.fEnergy),
68 fDispersion(clus.fDispersion),
73 fEmcCpvDistance(clus.fEmcCpvDistance),
74 fDistToBadChannel(clus.fDistToBadChannel),
76 fNExMax(clus.fNExMax),
77 fClusterType(clus.fClusterType)
80 // The copy constructor
82 fGlobalPos[0] = clus.fGlobalPos[0];
83 fGlobalPos[1] = clus.fGlobalPos[1];
84 fGlobalPos[2] = clus.fGlobalPos[2];
86 for(Int_t i=0; i<AliPID::kSPECIESN; i++) fPID[i] = clus.fPID[i];
90 //_______________________________________________________________________
91 AliESDCaloCluster &AliESDCaloCluster::operator=(const AliESDCaloCluster& source)
93 // assignment operator
95 if(&source == this) return *this;
96 TObject::operator=(source);
98 fGlobalPos[0] = source.fGlobalPos[0];
99 fGlobalPos[1] = source.fGlobalPos[1];
100 fGlobalPos[2] = source.fGlobalPos[2];
103 fEnergy = source.fEnergy;
104 fDispersion = source.fDispersion;
105 fChi2 = source.fChi2;
109 fEmcCpvDistance = source.fEmcCpvDistance;
110 fDistToBadChannel = source.fDistToBadChannel ;
111 for(Int_t i=0; i<AliPID::kSPECIESN; i++) fPID[i] = source.fPID[i];
114 delete fTracksMatched;
115 fTracksMatched = source.fTracksMatched?new TArrayS(*source.fTracksMatched):0x0;
117 fLabels = source.fLabels?new TArrayS(*source.fLabels):0x0;
119 delete fDigitAmplitude;
120 fDigitAmplitude = source.fDigitAmplitude?new TArrayS(*source.fDigitAmplitude):0x0;
123 fDigitTime = source.fDigitTime?new TArrayS(*source.fDigitTime):0x0;
126 fDigitIndex = source.fDigitIndex?new TArrayS(*source.fDigitIndex):0x0;
128 fNExMax = source.fNExMax;
129 fClusterType = source.fClusterType;
136 //_______________________________________________________________________
137 AliESDCaloCluster::~AliESDCaloCluster(){
139 // This is destructor according Coding Conventions
141 delete fTracksMatched;
143 delete fDigitAmplitude;
148 //_______________________________________________________________________
149 void AliESDCaloCluster::SetPid(const Float_t *p) {
150 // Sets the probability of each particle type
151 // Copied from AliESDtrack SetPIDValues
152 // This function copies "n" PID weights from "scr" to "dest"
153 // and normalizes their sum to 1 thus producing conditional
155 // The negative weights are set to 0.
156 // In case all the weights are non-positive they are replaced by
157 // uniform probabilities
159 Int_t n = AliPID::kSPECIESN;
161 Float_t uniform = 1./(Float_t)n;
164 for (Int_t i=0; i<n; i++)
174 for (Int_t i=0; i<n; i++) fPID[i] /= sum;
176 for (Int_t i=0; i<n; i++) fPID[i] = uniform;
180 //_______________________________________________________________________
181 void AliESDCaloCluster::GetMomentum(TLorentzVector& p, Double_t *vertex ) {
182 // Returns TLorentzVector with momentum of the cluster. Only valid for clusters
183 // identified as photons or pi0 (overlapped gamma) produced on the vertex
184 //Vertex can be recovered with esd pointer doing:
185 //" Double_t vertex[3] ; esd->GetVertex()->GetXYZ(vertex) ; "
187 if(vertex){//calculate direction from vertex
188 fGlobalPos[0]-=vertex[0];
189 fGlobalPos[1]-=vertex[1];
190 fGlobalPos[2]-=vertex[2];
193 Double_t r = TMath::Sqrt(fGlobalPos[0]*fGlobalPos[0]+
194 fGlobalPos[1]*fGlobalPos[1]+
195 fGlobalPos[2]*fGlobalPos[2] ) ;
197 p.SetPxPyPzE( fEnergy*fGlobalPos[0]/r, fEnergy*fGlobalPos[1]/r, fEnergy*fGlobalPos[2]/r, fEnergy) ;
201 Int_t AliESDCaloCluster::GetTrueDigitAmplitude(Int_t i, Double_t cc)
203 static Int_t amp=0; // amp is integer now
205 if(i>=0 && i<fDigitAmplitude->GetSize() && cc>0.0) {
207 amp = Int_t(Double_t(fDigitAmplitude->At(i))/500./cc+0.5);
212 Double_t AliESDCaloCluster::GetTrueDigitEnergy(Int_t i, Double_t cc)
214 return Double_t(GetTrueDigitAmplitude(i,cc)) * cc;
217 Double_t AliESDCaloCluster::GetRecalibratedDigitEnergy(Int_t i, Double_t ccOld, Double_t ccNew)
219 return Double_t(GetTrueDigitAmplitude(i,ccOld)) * ccNew;