STEER/AliESDZDC.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   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  **************************************************************************/
  15
  16
  17 //-------------------------------------------------------------------------
  18 //                      Implementation of   Class AliESDZDC
  19 //   This is a class that summarizes the ZDC data
  20 //   for the ESD
  21 //   Origin: Christian Klein-Boesing, CERN, Christian.Klein-Boesing@cern.ch
  22 //-------------------------------------------------------------------------
  23
  24
  25
  26 #include "AliESDZDC.h"
  27
  28 ClassImp(AliESDZDC)
  29
  30 //______________________________________________________________________________
  31 AliESDZDC::AliESDZDC() :
  32   TObject(),
  33   fZDCN1Energy(0),
  34   fZDCP1Energy(0),
  35   fZDCN2Energy(0),
  36   fZDCP2Energy(0),
  37   fZDCEMEnergy(0),
  38   fZDCEMEnergy1(0),
  39   fZDCParticipants(0),
  40   fZDCPartSideA(0),
  41   fZDCPartSideC(0),
  42   fImpactParameter(0),
  43   fImpactParamSideA(0),
  44   fImpactParamSideC(0),
  45   fESDQuality(0)
  46 {
  47   for(Int_t i=0; i<5; i++){
  48     fZN1TowerEnergy[i] = fZN2TowerEnergy[i] = 0.;
  49     fZP1TowerEnergy[i] = fZP2TowerEnergy[i] = 0.;
  50     fZN1TowerEnergyLR[i] = fZN2TowerEnergyLR[i] = 0.;
  51     fZP1TowerEnergyLR[i] = fZP2TowerEnergyLR[i] = 0.;
  52   }
  53   for(Int_t i=0; i<2; i++){
  54     fZNACentrCoord[i] = fZNCCentrCoord[i] = 0.;
  55   }
  56 }
  57
  58 //______________________________________________________________________________
  59 AliESDZDC::AliESDZDC(const AliESDZDC& zdc) :
  60   TObject(zdc),
  61   fZDCN1Energy(zdc.fZDCN1Energy),
  62   fZDCP1Energy(zdc.fZDCP1Energy),
  63   fZDCN2Energy(zdc.fZDCN2Energy),
  64   fZDCP2Energy(zdc.fZDCP2Energy),
  65   fZDCEMEnergy(zdc.fZDCEMEnergy),
  66   fZDCEMEnergy1(zdc.fZDCEMEnergy1),
  67   fZDCParticipants(zdc.fZDCParticipants),
  68   fZDCPartSideA(zdc.fZDCPartSideA),
  69   fZDCPartSideC(zdc.fZDCPartSideC),
  70   fImpactParameter(zdc.fImpactParameter),
  71   fImpactParamSideA(zdc.fImpactParamSideA),
  72   fImpactParamSideC(zdc.fImpactParamSideC),
  73   fESDQuality(zdc.fESDQuality)
  74 {
  75   // copy constructor
  76   for(Int_t i=0; i<5; i++){
  77      fZN1TowerEnergy[i] = zdc.fZN1TowerEnergy[i];
  78      fZN2TowerEnergy[i] = zdc.fZN2TowerEnergy[i];
  79      fZP1TowerEnergy[i] = zdc.fZP1TowerEnergy[i];
  80      fZP2TowerEnergy[i] = zdc.fZP2TowerEnergy[i];
  81      fZN1TowerEnergyLR[i] = zdc.fZN1TowerEnergyLR[i];
  82      fZN2TowerEnergyLR[i] = zdc.fZN2TowerEnergyLR[i];
  83      fZP1TowerEnergyLR[i] = zdc.fZP1TowerEnergyLR[i];
  84      fZP2TowerEnergyLR[i] = zdc.fZP2TowerEnergyLR[i];
  85   }
  86   for(Int_t i=0; i<2; i++){
  87     fZNACentrCoord[i] = zdc.fZNACentrCoord[i];
  88     fZNCCentrCoord[i] = zdc.fZNCCentrCoord[i];
  89   }
  90 }
  91
  92 //______________________________________________________________________________
  93 AliESDZDC& AliESDZDC::operator=(const AliESDZDC&zdc)
  94 {
  95   // assigment operator
  96   if(this!=&zdc) {
  97     TObject::operator=(zdc);
  98     fZDCN1Energy = zdc.fZDCN1Energy;
  99     fZDCP1Energy = zdc.fZDCP1Energy;
 100     fZDCN2Energy = zdc.fZDCN2Energy;
 101     fZDCP2Energy = zdc.fZDCP2Energy;
 102     fZDCEMEnergy = zdc.fZDCEMEnergy;
 103     fZDCEMEnergy1 = zdc.fZDCEMEnergy1;
 104     for(Int_t i=0; i<5; i++){
 105        fZN1TowerEnergy[i] = zdc.fZN1TowerEnergy[i];
 106        fZN2TowerEnergy[i] = zdc.fZN2TowerEnergy[i];
 107        fZP1TowerEnergy[i] = zdc.fZP1TowerEnergy[i];
 108        fZP2TowerEnergy[i] = zdc.fZP2TowerEnergy[i];
 109        fZN1TowerEnergyLR[i] = zdc.fZN1TowerEnergyLR[i];
 110        fZN2TowerEnergyLR[i] = zdc.fZN2TowerEnergyLR[i];
 111        fZP1TowerEnergyLR[i] = zdc.fZP1TowerEnergyLR[i];
 112        fZP2TowerEnergyLR[i] = zdc.fZP2TowerEnergyLR[i];
 113     }
 114     //
 115     fZDCParticipants = zdc.fZDCParticipants;
 116     fZDCPartSideA = zdc.fZDCPartSideA;
 117     fZDCPartSideC = zdc.fZDCPartSideC;
 118     fImpactParameter = zdc.fImpactParameter;
 119     fImpactParamSideA = zdc.fImpactParamSideA;
 120     fImpactParamSideC = zdc.fImpactParamSideC;
 121     //
 122     for(Int_t i=0; i<2; i++){
 123          fZNACentrCoord[i] = zdc.fZNACentrCoord[i];
 124          fZNCCentrCoord[i] = zdc.fZNCCentrCoord[i];
 125     }
 126     //
 127     fESDQuality = zdc.fESDQuality;
 128   }
 129   return *this;
 130 }
 131
 132 //______________________________________________________________________________
 133 void AliESDZDC::Copy(TObject &obj) const {
 134
 135   // this overwrites the virtual TOBject::Copy()
 136   // to allow run time copying without casting
 137   // in AliESDEvent
 138
 139   if(this==&obj)return;
 140   AliESDZDC *robj = dynamic_cast<AliESDZDC*>(&obj);
 141   if(!robj)return; // not an AliESDZDC
 142   *robj = *this;
 143
 144 }
 145
 146
 147 //______________________________________________________________________________
 148 void AliESDZDC::Reset()
 149 {
 150   // reset all data members
 151   fZDCN1Energy=0;
 152   fZDCP1Energy=0;
 153   fZDCN2Energy=0;
 154   fZDCP2Energy=0;
 155   fZDCEMEnergy=0;
 156   fZDCEMEnergy1=0;
 157   for(Int_t i=0; i<5; i++){
 158     fZN1TowerEnergy[i] = fZN2TowerEnergy[i] = 0.;
 159     fZP1TowerEnergy[i] = fZP2TowerEnergy[i] = 0.;
 160     fZN1TowerEnergyLR[i] = fZN2TowerEnergyLR[i] = 0.;
 161     fZP1TowerEnergyLR[i] = fZP2TowerEnergyLR[i] = 0.;
 162   }
 163   fZDCParticipants=0;
 164   fZDCPartSideA=0;
 165   fZDCPartSideC=0;
 166   fImpactParameter=0;
 167   fImpactParamSideA=0;
 168   fImpactParamSideC=0;
 169   for(Int_t i=0; i<2; i++){
 170        fZNACentrCoord[i] = fZNCCentrCoord[i] = 0.;
 171   }
 172   fESDQuality=0;
 173 }
 174
 175 //______________________________________________________________________________
 176 void AliESDZDC::Print(const Option_t *) const
 177 {
 178   //  Print ESD for the ZDC
 179   printf("\n \t E_{ZNC} = %f TeV, E_{ZPC} = %f TeV, E_{ZNA} = %f TeV, E_{ZPA} = %f TeV,"
 180   " E_{ZEM} = %f GeV, Npart = %d, b = %1.2f fm\n",
 181   fZDCN1Energy/1000.,fZDCP1Energy/1000.,fZDCN2Energy/1000.,fZDCP2Energy/1000.,
 182   fZDCEMEnergy+fZDCEMEnergy1, fZDCParticipants,fImpactParameter);
 183 }
 184
 185 //______________________________________________________________________________
 186 Double32_t * AliESDZDC::GetZNCCentroid()
 187 {
 188   // Provide coordinates of centroid over ZN (side C) front face
 189   Float_t x[4] = {-1.75, 1.75, -1.75, 1.75};
 190   Float_t y[4] = {-1.75, -1.75, 1.75, 1.75};
 191   Float_t numX=0., numY=0., den=0.;
 192   Float_t c, alpha=0.395, w;
 193   //
 194   for(Int_t i=0; i<4; i++){
 195     if(fZN1TowerEnergy[i+1]<0.) fZN1TowerEnergy[i+1]=0.;
 196     w = TMath::Power(fZN1TowerEnergy[i+1], alpha);
 197     numX += x[i]*w;
 198     numY += y[i]*w;
 199     den += w;
 200   }
 201   if(den!=0){
 202     // ATTENTION! Needs to be changed if E_beam(A-A) != 2.76 A TeV !!!!
 203     Float_t nSpecn = fZDCN1Energy/2760.;
 204     c = 1.89358-0.71262/(nSpecn+0.71789);
 205     fZNCCentrCoord[0] = c*numX/den;
 206     fZNCCentrCoord[1] = c*numY/den;
 207   }
 208   return fZNCCentrCoord;
 209 }
 210
 211 //______________________________________________________________________________
 212 Double32_t * AliESDZDC::GetZNACentroid()
 213 {
 214   // Provide coordinates of centroid over ZN (side A) front face
 215   Float_t x[4] = {-1.75, 1.75, -1.75, 1.75};
 216   Float_t y[4] = {-1.75, -1.75, 1.75, 1.75};
 217   Float_t numX=0., numY=0., den=0.;
 218   Float_t c, alpha=0.395, w;
 219
 220   for(Int_t i=0; i<4; i++){
 221     if(fZN2TowerEnergy[i+1]<0.) fZN2TowerEnergy[i+1]=0.;
 222     w = TMath::Power(fZN2TowerEnergy[i+1], alpha);
 223     numX += x[i]*w;
 224     numY += y[i]*w;
 225     den += w;
 226   }
 227   //
 228   if(den!=0){
 229     // ATTENTION! Needs to be changed if E_beam(A-A) != 2.76 A TeV !!!!
 230     Float_t nSpecn = fZDCN2Energy/2760.;
 231     c = 1.89358-0.71262/(nSpecn+0.71789);
 232     fZNACentrCoord[0] = c*numX/den;
 233     fZNACentrCoord[1] = c*numY/den;
 234   }
 235   return fZNACentrCoord;
 236 }