[u/mrichter/AliRoot.git] / STEER / AliESDZDC.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/


//-------------------------------------------------------------------------
//                      Implementation of   Class AliESDZDC
//   This is a class that summarizes the ZDC data
//   for the ESD   
//   Origin: Christian Klein-Boesing, CERN, Christian.Klein-Boesing@cern.ch 
//-------------------------------------------------------------------------

#include <TMath.h>

#include "AliESDZDC.h"

ClassImp(AliESDZDC)

//______________________________________________________________________________
AliESDZDC::AliESDZDC() :
  TObject(),
  fZDCN1Energy(0),
  fZDCP1Energy(0),
  fZDCN2Energy(0),
  fZDCP2Energy(0),
  fZDCEMEnergy(0),
  fZDCEMEnergy1(0),
  fZDCParticipants(0),
  fZDCPartSideA(0),
  fZDCPartSideC(0),
  fImpactParameter(0),
  fImpactParamSideA(0),
  fImpactParamSideC(0),
  fESDQuality(0)
{
  for(Int_t i=0; i<5; i++){
    fZN1TowerEnergy[i] = fZN2TowerEnergy[i] = 0.;
    fZP1TowerEnergy[i] = fZP2TowerEnergy[i] = 0.;
    fZN1TowerEnergyLR[i] = fZN2TowerEnergyLR[i] = 0.;
    fZP1TowerEnergyLR[i] = fZP2TowerEnergyLR[i] = 0.;
  }
  for(Int_t i=0; i<2; i++){
    fZNACentrCoord[i] = fZNCCentrCoord[i] = 0.;
  }
  for(Int_t i=0; i<32; i++) fVMEScaler[i]=0;
}

//______________________________________________________________________________
AliESDZDC::AliESDZDC(const AliESDZDC& zdc) :
  TObject(zdc),
  fZDCN1Energy(zdc.fZDCN1Energy),
  fZDCP1Energy(zdc.fZDCP1Energy),
  fZDCN2Energy(zdc.fZDCN2Energy),
  fZDCP2Energy(zdc.fZDCP2Energy),
  fZDCEMEnergy(zdc.fZDCEMEnergy),
  fZDCEMEnergy1(zdc.fZDCEMEnergy1),
  fZDCParticipants(zdc.fZDCParticipants),
  fZDCPartSideA(zdc.fZDCPartSideA),
  fZDCPartSideC(zdc.fZDCPartSideC),
  fImpactParameter(zdc.fImpactParameter),
  fImpactParamSideA(zdc.fImpactParamSideA),
  fImpactParamSideC(zdc.fImpactParamSideC),
  fESDQuality(zdc.fESDQuality)
{
  // copy constructor
  for(Int_t i=0; i<5; i++){
     fZN1TowerEnergy[i] = zdc.fZN1TowerEnergy[i];
     fZN2TowerEnergy[i] = zdc.fZN2TowerEnergy[i];
     fZP1TowerEnergy[i] = zdc.fZP1TowerEnergy[i];
     fZP2TowerEnergy[i] = zdc.fZP2TowerEnergy[i];
     fZN1TowerEnergyLR[i] = zdc.fZN1TowerEnergyLR[i];
     fZN2TowerEnergyLR[i] = zdc.fZN2TowerEnergyLR[i];
     fZP1TowerEnergyLR[i] = zdc.fZP1TowerEnergyLR[i];
     fZP2TowerEnergyLR[i] = zdc.fZP2TowerEnergyLR[i];
  }
  for(Int_t i=0; i<2; i++){
    fZNACentrCoord[i] = zdc.fZNACentrCoord[i];
    fZNCCentrCoord[i] = zdc.fZNCCentrCoord[i];
  }
  for(Int_t i=0; i<32; i++) fVMEScaler[i] = zdc.fVMEScaler[i];
}

//______________________________________________________________________________
AliESDZDC& AliESDZDC::operator=(const AliESDZDC&zdc)
{
  // assigment operator
  if(this!=&zdc) {
    TObject::operator=(zdc);
    fZDCN1Energy = zdc.fZDCN1Energy;
    fZDCP1Energy = zdc.fZDCP1Energy;
    fZDCN2Energy = zdc.fZDCN2Energy;
    fZDCP2Energy = zdc.fZDCP2Energy;
    fZDCEMEnergy = zdc.fZDCEMEnergy;
    fZDCEMEnergy1 = zdc.fZDCEMEnergy1;
    for(Int_t i=0; i<5; i++){
       fZN1TowerEnergy[i] = zdc.fZN1TowerEnergy[i];
       fZN2TowerEnergy[i] = zdc.fZN2TowerEnergy[i];
       fZP1TowerEnergy[i] = zdc.fZP1TowerEnergy[i];
       fZP2TowerEnergy[i] = zdc.fZP2TowerEnergy[i];
       fZN1TowerEnergyLR[i] = zdc.fZN1TowerEnergyLR[i];
       fZN2TowerEnergyLR[i] = zdc.fZN2TowerEnergyLR[i];
       fZP1TowerEnergyLR[i] = zdc.fZP1TowerEnergyLR[i];
       fZP2TowerEnergyLR[i] = zdc.fZP2TowerEnergyLR[i];
    }
    //
    fZDCParticipants = zdc.fZDCParticipants;
    fZDCPartSideA = zdc.fZDCPartSideA;
    fZDCPartSideC = zdc.fZDCPartSideC;
    fImpactParameter = zdc.fImpactParameter;
    fImpactParamSideA = zdc.fImpactParamSideA;
    fImpactParamSideC = zdc.fImpactParamSideC;
    //
    for(Int_t i=0; i<2; i++){
         fZNACentrCoord[i] = zdc.fZNACentrCoord[i];
         fZNCCentrCoord[i] = zdc.fZNCCentrCoord[i];
    }
    //
    fESDQuality = zdc.fESDQuality;
    for(Int_t i=0; i<32; i++) fVMEScaler[i] = zdc.fVMEScaler[i];
  } 
  return *this;
}

//______________________________________________________________________________
void AliESDZDC::Copy(TObject &obj) const {
  
  // this overwrites the virtual TOBject::Copy()
  // to allow run time copying without casting
  // in AliESDEvent

  if(this==&obj)return;
  AliESDZDC *robj = dynamic_cast<AliESDZDC*>(&obj);
  if(!robj)return; // not an AliESDZDC
  *robj = *this;

}


//______________________________________________________________________________
void AliESDZDC::Reset()
{
  // reset all data members
  fZDCN1Energy=0;
  fZDCP1Energy=0;
  fZDCN2Energy=0;
  fZDCP2Energy=0;
  fZDCEMEnergy=0;
  fZDCEMEnergy1=0;
  for(Int_t i=0; i<5; i++){
    fZN1TowerEnergy[i] = fZN2TowerEnergy[i] = 0.;
    fZP1TowerEnergy[i] = fZP2TowerEnergy[i] = 0.;
    fZN1TowerEnergyLR[i] = fZN2TowerEnergyLR[i] = 0.;
    fZP1TowerEnergyLR[i] = fZP2TowerEnergyLR[i] = 0.;
  }
  fZDCParticipants=0;  
  fZDCPartSideA=0;  
  fZDCPartSideC=0;  
  fImpactParameter=0;
  fImpactParamSideA=0;
  fImpactParamSideC=0;
  for(Int_t i=0; i<2; i++){
       fZNACentrCoord[i] = fZNCCentrCoord[i] = 0.;
  }
  fESDQuality=0;
  for(Int_t i=0; i<32; i++) fVMEScaler[i] = 0;
}

//______________________________________________________________________________
void AliESDZDC::Print(const Option_t *) const
{
  //  Print ESD for the ZDC
  printf("\n \t E_{ZNC} = %f TeV, E_{ZPC} = %f TeV, E_{ZNA} = %f TeV, E_{ZPA} = %f TeV,"
  " E_{ZEM} = %f GeV, Npart = %d, b = %1.2f fm\n",
  fZDCN1Energy/1000.,fZDCP1Energy/1000.,fZDCN2Energy/1000.,fZDCP2Energy/1000.,
  fZDCEMEnergy+fZDCEMEnergy1, fZDCParticipants,fImpactParameter);
  //
  printf(" ### fVMEScaler: \n");
  for(Int_t i=0; i<32; i++) printf("\t datum %d: %d \n",i,fVMEScaler[i]);
  printf("\n");
}

//______________________________________________________________________________
Bool_t AliESDZDC::GetZNCentroidInPbPb(Float_t beamEne, Double_t centrZNC[2], Double_t centrZNA[2]) 
{
  // Provide coordinates of centroid over ZN (side C) front face
  if(beamEne==0){
    printf(" ZDC centroid in PbPb can't be calculated with E_beam = 0 !!!\n");
    for(Int_t jj=0; jj<2; jj++) fZNCCentrCoord[jj] = 999.;
    return kFALSE;
  }

  const Float_t x[4] = {-1.75, 1.75, -1.75, 1.75};
  const Float_t y[4] = {-1.75, -1.75, 1.75, 1.75};
  const Float_t alpha=0.395;
  Float_t numXZNC=0., numYZNC=0., denZNC=0., cZNC, wZNC; 
  Float_t numXZNA=0., numYZNA=0., denZNA=0., cZNA, wZNA; 
  //
  for(Int_t i=0; i<4; i++){
    if(fZN1TowerEnergy[i+1]>0.) {
      wZNC = TMath::Power(fZN1TowerEnergy[i+1], alpha);
      numXZNC += x[i]*wZNC;
      numYZNC += y[i]*wZNC;
      denZNC += wZNC;
    }
    if(fZN2TowerEnergy[i+1]>0.) {
      wZNA = TMath::Power(fZN1TowerEnergy[i+1], alpha);
      numXZNA += x[i]*wZNA;
      numYZNA += y[i]*wZNA;
      denZNA += wZNA;
    }
  }
  //
  if(denZNC!=0){
    Float_t nSpecnC = fZDCN1Energy/beamEne;
    cZNC = 1.89358-0.71262/(nSpecnC+0.71789);
    fZNCCentrCoord[0] = cZNC*numXZNC/denZNC;
    fZNCCentrCoord[1] = cZNC*numYZNC/denZNC;
  } 
  else{
    fZNCCentrCoord[0] = fZNCCentrCoord[1] = 999.;
  }
  if(denZNA!=0){
    Float_t nSpecnA = fZDCN1Energy/beamEne;
    cZNA = 1.89358-0.71262/(nSpecnA+0.71789);
    fZNCCentrCoord[0] = cZNA*numXZNA/denZNA;
    fZNCCentrCoord[1] = cZNA*numYZNA/denZNA;
  } 
  else{
    fZNACentrCoord[0] = fZNACentrCoord[1] = 999.;
  }
  //
  for(Int_t il=0; il<2; il++){
    centrZNC[il] = fZNCCentrCoord[il];
    centrZNA[il] = fZNACentrCoord[il];
  }
  
  return kTRUE;
}

//______________________________________________________________________________
Bool_t AliESDZDC::GetZNCentroidInpp(Double_t centrZNC[2], Double_t centrZNA[2]) 
{
  // Provide coordinates of centroid over ZN (side C) front face
  const Float_t x[4] = {-1.75, 1.75, -1.75, 1.75};
  const Float_t y[4] = {-1.75, -1.75, 1.75, 1.75};
  const Float_t alpha=0.5;
  Float_t numXZNC=0., numYZNC=0., denZNC=0., wZNC; 
  Float_t numXZNA=0., numYZNA=0., denZNA=0., wZNA; 
  //
  for(Int_t i=0; i<4; i++){
    if(fZN1TowerEnergy[i+1]>0.) {
      wZNC = TMath::Power(fZN1TowerEnergy[i+1], alpha);
      numXZNC += x[i]*wZNC;
      numYZNC += y[i]*wZNC;
      denZNC += wZNC;
    }
    if(fZN2TowerEnergy[i+1]>0.) {
      wZNA = TMath::Power(fZN2TowerEnergy[i+1], alpha);
      numXZNA += x[i]*wZNA;
      numYZNA += y[i]*wZNA;
      denZNA += wZNA;
    }
  }
  //
  if(denZNC!=0){
    fZNCCentrCoord[0] = numXZNC/denZNC;
    fZNCCentrCoord[1] = numYZNC/denZNC;
  } 
  else{
    fZNCCentrCoord[0] = fZNCCentrCoord[1] = 999.;
  }
  if(denZNA!=0){
    fZNACentrCoord[0] = numXZNA/denZNA;
    fZNACentrCoord[1] = numYZNA/denZNA;
  } 
  else{
    fZNACentrCoord[0] = fZNACentrCoord[1] = 999.;
  }
  //
  for(Int_t il=0; il<2; il++){
    centrZNC[il] = fZNCCentrCoord[il];
    centrZNA[il] = fZNACentrCoord[il];
  }
  
  return kTRUE;
}
Commit	Line	Data
d5ebf00e	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
cb6a0388	24	#include <TMath.h>
d5ebf00e	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),
f6536de8	37	fZDCEMEnergy(0),
f6536de8	38	fZDCEMEnergy1(0),
2b6cdc43	39	fZDCParticipants(0),
5f0ec064	40	fZDCPartSideA(0),
	41	fZDCPartSideC(0),
	42	fImpactParameter(0),
	43	fImpactParamSideA(0),
	44	fImpactParamSideC(0),
	45	fESDQuality(0)
d5ebf00e	46	{
89291556	47	for(Int_t i=0; i<5; i++){
a85132e7	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	}
89291556	53	for(Int_t i=0; i<2; i++){
	54	fZNACentrCoord[i] = fZNCCentrCoord[i] = 0.;
	55	}
54c6a92c	56	for(Int_t i=0; i<32; i++) fVMEScaler[i]=0;
d5ebf00e	57	}
d5ebf00e	58
2b6cdc43	59	//______________________________________________________________________________
d5ebf00e	60	AliESDZDC::AliESDZDC(const AliESDZDC& zdc) :
	61	TObject(zdc),
	62	fZDCN1Energy(zdc.fZDCN1Energy),
	63	fZDCP1Energy(zdc.fZDCP1Energy),
	64	fZDCN2Energy(zdc.fZDCN2Energy),
	65	fZDCP2Energy(zdc.fZDCP2Energy),
f6536de8	66	fZDCEMEnergy(zdc.fZDCEMEnergy),
f6536de8	67	fZDCEMEnergy1(zdc.fZDCEMEnergy1),
2b6cdc43	68	fZDCParticipants(zdc.fZDCParticipants),
5f0ec064	69	fZDCPartSideA(zdc.fZDCPartSideA),
	70	fZDCPartSideC(zdc.fZDCPartSideC),
	71	fImpactParameter(zdc.fImpactParameter),
8c755c03	72	fImpactParamSideA(zdc.fImpactParamSideA),
8c755c03	73	fImpactParamSideC(zdc.fImpactParamSideC),
5f0ec064	74	fESDQuality(zdc.fESDQuality)
d5ebf00e	75	{
d5ebf00e	76	// copy constructor
89291556	77	for(Int_t i=0; i<5; i++){
a85132e7	78	fZN1TowerEnergy[i] = zdc.fZN1TowerEnergy[i];
	79	fZN2TowerEnergy[i] = zdc.fZN2TowerEnergy[i];
	80	fZP1TowerEnergy[i] = zdc.fZP1TowerEnergy[i];
	81	fZP2TowerEnergy[i] = zdc.fZP2TowerEnergy[i];
	82	fZN1TowerEnergyLR[i] = zdc.fZN1TowerEnergyLR[i];
	83	fZN2TowerEnergyLR[i] = zdc.fZN2TowerEnergyLR[i];
	84	fZP1TowerEnergyLR[i] = zdc.fZP1TowerEnergyLR[i];
	85	fZP2TowerEnergyLR[i] = zdc.fZP2TowerEnergyLR[i];
	86	}
89291556	87	for(Int_t i=0; i<2; i++){
	88	fZNACentrCoord[i] = zdc.fZNACentrCoord[i];
	89	fZNCCentrCoord[i] = zdc.fZNCCentrCoord[i];
	90	}
54c6a92c	91	for(Int_t i=0; i<32; i++) fVMEScaler[i] = zdc.fVMEScaler[i];
d5ebf00e	92	}
d5ebf00e	93
2b6cdc43	94	//______________________________________________________________________________
d5ebf00e	95	AliESDZDC& AliESDZDC::operator=(const AliESDZDC&zdc)
	96	{
	97	// assigment operator
	98	if(this!=&zdc) {
	99	TObject::operator=(zdc);
	100	fZDCN1Energy = zdc.fZDCN1Energy;
	101	fZDCP1Energy = zdc.fZDCP1Energy;
	102	fZDCN2Energy = zdc.fZDCN2Energy;
	103	fZDCP2Energy = zdc.fZDCP2Energy;
f6536de8	104	fZDCEMEnergy = zdc.fZDCEMEnergy;
f6536de8	105	fZDCEMEnergy1 = zdc.fZDCEMEnergy1;
a85132e7	106	for(Int_t i=0; i<5; i++){
7b4458a2	107	fZN1TowerEnergy[i] = zdc.fZN1TowerEnergy[i];
7b4458a2	108	fZN2TowerEnergy[i] = zdc.fZN2TowerEnergy[i];
a85132e7	109	fZP1TowerEnergy[i] = zdc.fZP1TowerEnergy[i];
	110	fZP2TowerEnergy[i] = zdc.fZP2TowerEnergy[i];
	111	fZN1TowerEnergyLR[i] = zdc.fZN1TowerEnergyLR[i];
	112	fZN2TowerEnergyLR[i] = zdc.fZN2TowerEnergyLR[i];
	113	fZP1TowerEnergyLR[i] = zdc.fZP1TowerEnergyLR[i];
	114	fZP2TowerEnergyLR[i] = zdc.fZP2TowerEnergyLR[i];
7b4458a2	115	}
5f0ec064	116	//
	117	fZDCParticipants = zdc.fZDCParticipants;
	118	fZDCPartSideA = zdc.fZDCPartSideA;
	119	fZDCPartSideC = zdc.fZDCPartSideC;
	120	fImpactParameter = zdc.fImpactParameter;
	121	fImpactParamSideA = zdc.fImpactParamSideA;
	122	fImpactParamSideC = zdc.fImpactParamSideC;
	123	//
89291556	124	for(Int_t i=0; i<2; i++){
	125	fZNACentrCoord[i] = zdc.fZNACentrCoord[i];
	126	fZNCCentrCoord[i] = zdc.fZNCCentrCoord[i];
	127	}
5f0ec064	128	//
5f0ec064	129	fESDQuality = zdc.fESDQuality;
54c6a92c	130	for(Int_t i=0; i<32; i++) fVMEScaler[i] = zdc.fVMEScaler[i];
d5ebf00e	131	}
	132	return *this;
	133	}
	134
2b6cdc43	135	//______________________________________________________________________________
732a24fe	136	void AliESDZDC::Copy(TObject &obj) const {
	137
	138	// this overwrites the virtual TOBject::Copy()
	139	// to allow run time copying without casting
	140	// in AliESDEvent
	141
	142	if(this==&obj)return;
	143	AliESDZDC robj = dynamic_cast<AliESDZDC>(&obj);
	144	if(!robj)return; // not an AliESDZDC
	145	robj = this;
	146
	147	}
	148
d5ebf00e	149
	150	//______________________________________________________________________________
	151	void AliESDZDC::Reset()
	152	{
	153	// reset all data members
	154	fZDCN1Energy=0;
	155	fZDCP1Energy=0;
	156	fZDCN2Energy=0;
	157	fZDCP2Energy=0;
f6536de8	158	fZDCEMEnergy=0;
f6536de8	159	fZDCEMEnergy1=0;
89291556	160	for(Int_t i=0; i<5; i++){
a85132e7	161	fZN1TowerEnergy[i] = fZN2TowerEnergy[i] = 0.;
	162	fZP1TowerEnergy[i] = fZP2TowerEnergy[i] = 0.;
	163	fZN1TowerEnergyLR[i] = fZN2TowerEnergyLR[i] = 0.;
	164	fZP1TowerEnergyLR[i] = fZP2TowerEnergyLR[i] = 0.;
	165	}
5f0ec064	166	fZDCParticipants=0;
	167	fZDCPartSideA=0;
	168	fZDCPartSideC=0;
	169	fImpactParameter=0;
	170	fImpactParamSideA=0;
	171	fImpactParamSideC=0;
89291556	172	for(Int_t i=0; i<2; i++){
	173	fZNACentrCoord[i] = fZNCCentrCoord[i] = 0.;
	174	}
5f0ec064	175	fESDQuality=0;
54c6a92c	176	for(Int_t i=0; i<32; i++) fVMEScaler[i] = 0;
d5ebf00e	177	}
	178
	179	//______________________________________________________________________________
	180	void AliESDZDC::Print(const Option_t *) const
	181	{
a85132e7	182	// Print ESD for the ZDC
5f0ec064	183	printf("\n \t E_{ZNC} = %f TeV, E_{ZPC} = %f TeV, E_{ZNA} = %f TeV, E_{ZPA} = %f TeV,"
	184	" E_{ZEM} = %f GeV, Npart = %d, b = %1.2f fm\n",
	185	fZDCN1Energy/1000.,fZDCP1Energy/1000.,fZDCN2Energy/1000.,fZDCP2Energy/1000.,
	186	fZDCEMEnergy+fZDCEMEnergy1, fZDCParticipants,fImpactParameter);
54c6a92c	187	//
	188	printf(" ### fVMEScaler: \n");
	189	for(Int_t i=0; i<32; i++) printf("\t datum %d: %d \n",i,fVMEScaler[i]);
	190	printf("\n");
d5ebf00e	191	}
d5ebf00e	192
d1d3e36b	193	//______________________________________________________________________________
789b8a8d	194	Bool_t AliESDZDC::GetZNCentroidInPbPb(Float_t beamEne, Double_t centrZNC[2], Double_t centrZNA[2])
d1d3e36b	195	{
d1d3e36b	196	// Provide coordinates of centroid over ZN (side C) front face
789b8a8d	197	if(beamEne==0){
	198	printf(" ZDC centroid in PbPb can't be calculated with E_beam = 0 !!!\n");
	199	for(Int_t jj=0; jj<2; jj++) fZNCCentrCoord[jj] = 999.;
	200	return kFALSE;
	201	}
	202
b19cc8d0	203	const Float_t x[4] = {-1.75, 1.75, -1.75, 1.75};
b19cc8d0	204	const Float_t y[4] = {-1.75, -1.75, 1.75, 1.75};
b19cc8d0	205	const Float_t alpha=0.395;
789b8a8d	206	Float_t numXZNC=0., numYZNC=0., denZNC=0., cZNC, wZNC;
789b8a8d	207	Float_t numXZNA=0., numYZNA=0., denZNA=0., cZNA, wZNA;
5f0ec064	208	//
789b8a8d	209	for(Int_t i=0; i<4; i++){
b19cc8d0	210	if(fZN1TowerEnergy[i+1]>0.) {
789b8a8d	211	wZNC = TMath::Power(fZN1TowerEnergy[i+1], alpha);
	212	numXZNC += x[i]*wZNC;
	213	numYZNC += y[i]*wZNC;
	214	denZNC += wZNC;
b19cc8d0	215	}
b19cc8d0	216	if(fZN2TowerEnergy[i+1]>0.) {
789b8a8d	217	wZNA = TMath::Power(fZN1TowerEnergy[i+1], alpha);
	218	numXZNA += x[i]*wZNA;
	219	numYZNA += y[i]*wZNA;
	220	denZNA += wZNA;
b19cc8d0	221	}
789b8a8d	222	}
ce099621	223	//
789b8a8d	224	if(denZNC!=0){
	225	Float_t nSpecnC = fZDCN1Energy/beamEne;
	226	cZNC = 1.89358-0.71262/(nSpecnC+0.71789);
	227	fZNCCentrCoord[0] = cZNC*numXZNC/denZNC;
	228	fZNCCentrCoord[1] = cZNC*numYZNC/denZNC;
	229	}
	230	else{
	231	fZNCCentrCoord[0] = fZNCCentrCoord[1] = 999.;
b19cc8d0	232	}
789b8a8d	233	if(denZNA!=0){
	234	Float_t nSpecnA = fZDCN1Energy/beamEne;
	235	cZNA = 1.89358-0.71262/(nSpecnA+0.71789);
	236	fZNCCentrCoord[0] = cZNA*numXZNA/denZNA;
	237	fZNCCentrCoord[1] = cZNA*numYZNA/denZNA;
	238	}
	239	else{
	240	fZNACentrCoord[0] = fZNACentrCoord[1] = 999.;
	241	}
	242	//
	243	for(Int_t il=0; il<2; il++){
	244	centrZNC[il] = fZNCCentrCoord[il];
	245	centrZNA[il] = fZNACentrCoord[il];
	246	}
	247
	248	return kTRUE;
b19cc8d0	249	}
	250
	251	//______________________________________________________________________________
789b8a8d	252	Bool_t AliESDZDC::GetZNCentroidInpp(Double_t centrZNC[2], Double_t centrZNA[2])
b19cc8d0	253	{
	254	// Provide coordinates of centroid over ZN (side C) front face
	255	const Float_t x[4] = {-1.75, 1.75, -1.75, 1.75};
	256	const Float_t y[4] = {-1.75, -1.75, 1.75, 1.75};
b19cc8d0	257	const Float_t alpha=0.5;
789b8a8d	258	Float_t numXZNC=0., numYZNC=0., denZNC=0., wZNC;
789b8a8d	259	Float_t numXZNA=0., numYZNA=0., denZNA=0., wZNA;
b19cc8d0	260	//
789b8a8d	261	for(Int_t i=0; i<4; i++){
b19cc8d0	262	if(fZN1TowerEnergy[i+1]>0.) {
789b8a8d	263	wZNC = TMath::Power(fZN1TowerEnergy[i+1], alpha);
	264	numXZNC += x[i]*wZNC;
	265	numYZNC += y[i]*wZNC;
	266	denZNC += wZNC;
b19cc8d0	267	}
b19cc8d0	268	if(fZN2TowerEnergy[i+1]>0.) {
789b8a8d	269	wZNA = TMath::Power(fZN2TowerEnergy[i+1], alpha);
	270	numXZNA += x[i]*wZNA;
	271	numYZNA += y[i]*wZNA;
	272	denZNA += wZNA;
b19cc8d0	273	}
789b8a8d	274	}
	275	//
	276	if(denZNC!=0){
	277	fZNCCentrCoord[0] = numXZNC/denZNC;
	278	fZNCCentrCoord[1] = numYZNC/denZNC;
	279	}
	280	else{
	281	fZNCCentrCoord[0] = fZNCCentrCoord[1] = 999.;
	282	}
	283	if(denZNA!=0){
	284	fZNACentrCoord[0] = numXZNA/denZNA;
	285	fZNACentrCoord[1] = numYZNA/denZNA;
	286	}
	287	else{
	288	fZNACentrCoord[0] = fZNACentrCoord[1] = 999.;
	289	}
b19cc8d0	290	//
789b8a8d	291	for(Int_t il=0; il<2; il++){
	292	centrZNC[il] = fZNCCentrCoord[il];
	293	centrZNA[il] = fZNACentrCoord[il];
ce099621	294	}
789b8a8d	295
789b8a8d	296	return kTRUE;
d1d3e36b	297	}