// --- ROOT system ---
// --- Standard library ---
-
-#include <iostream.h>
+#include <stdlib.h>
// --- AliRoot header files ---
+#include <TError.h>
#include <TMath.h>
+#include <TVector3.h>
+
// -- ALICE Headers.
#include "AliConst.h"
+
// --- EMCAL headers
#include "AliEMCALGeometry.h"
AliEMCALGeometry::~AliEMCALGeometry(void){
// dtor
}
+
+//______________________________________________________________________
+const Bool_t AliEMCALGeometry::AreInSameTower(Int_t id1, Int_t id2) const {
+ Int_t idmax = TMath::Max(id1, id2) ;
+ Int_t idmin = TMath::Min(id1, id2) ;
+ if ( ((idmax - GetNZ() * GetNPhi()) == idmin ) ||
+ ((idmax - 2 * GetNZ() * GetNPhi()) == idmin ) )
+ return kTRUE ;
+ else
+ return kFALSE ;
+}
+
//______________________________________________________________________
void AliEMCALGeometry::Init(void){
- // Initializes the EMCAL parameters
-
- fgInit = kFALSE; // Assume failer untill proven otherwise.
- if(!( (strcmp( fName, "EMCALArch1a" ) == 0) |
- (strcmp( fName, "EMCALArch1b" ) == 0) |
- (strcmp( fName, "EMCALArch2a" ) == 0) |
- (strcmp( fName, "EMCALArch2b" ) == 0) )){
- cout <<"Instance " << fName << " undefined" << endl;
- } // end if
- //
- if (((strcmp( fName, "EMCALArch1a" )) == 0) |
- ((strcmp( fName, "EMCALArch1b" )) == 0)){
- fNZ = 96;
- fNPhi = 144;
- } // end if
- if (((strcmp( fName, "EMCALArch2a" )) == 0) |
- ((strcmp( fName, "EMCALArch2b" )) == 0)){
- fNZ = 112;
- fNPhi = 168;
- } // end if
- if (((strcmp( fName, "EMCALArch1a" )) == 0) |
- ((strcmp( fName, "EMCALArch2a" )) == 0)){
- fNLayers = 21;
- } // end if
- if (((strcmp( fName, "EMCALArch1b" )) == 0) |
- ((strcmp( fName, "EMCALArch2b" )) == 0)){
- fNLayers = 25;
- } // end if
-
- // geometry
- fAirGap = 5.0; // cm, air gap between EMCAL mother volume and
- // active material.
- fAlFrontThick = 3.18; // cm, Thickness of front Al layer
- fPbRadThickness = 0.5; // cm, Thickness of theh Pb radiators.
- fPreShowerSintThick = 0.6; // cm, Thickness of the sintilator for the
- // preshower part of the calorimeter
- fFullShowerSintThick = 0.5; // cm, Thickness of the sintilator for the
- // full shower part of the calorimeter
- fArm1PhiMin = 0.0; // degrees, Starting EMCAL Phi position
- fArm1PhiMax = 120.0; // degrees, Ending EMCAL Phi position
- fArm1EtaMin = -0.7; // pseudorapidity, Starting EMCAL Eta position
- fArm1EtaMax = +0.7; // pseudorapidity, Ending EMCAL Eta position
- fIPDistance = 454.0; // cm, Radial distance to inner surface of EMCAL
- fShellThickness = GetAlFrontThickness() + 2.*GetPreSintThick() +
- (fNLayers-2)*GetFullSintThick()+(fNLayers-1)*GetPbRadThick();
- //below; cm, Z lenght of the EMCAL.
- fZLength = 2.*ZFromEtaR(fIPDistance+fShellThickness,fArm1EtaMax);
- fEnvelop[0] = fIPDistance; // mother volume inner radius
- fEnvelop[1] = fIPDistance + fShellThickness; // mother volume outer r.
- fEnvelop[2] = 1.00001*fZLength; // add some padding for mother volume.
- fGap2Active = 1.0; // cm, Gap between
- fgInit = kTRUE;
+ // Initializes the EMCAL parameters
+ // naming convention : GUV_L_WX_N_YZ_M gives the composition of a tower
+ // UV inform about the compsition of the pre-shower section:
+ // thickness in mm of Pb radiator (U) and of scintillator (V), and number of scintillator layers (L)
+ // WX inform about the composition of the EM calorimeter section:
+ // thickness in mm of Pb radiator (W) and of scintillator (X), and number of scintillator layers (N)
+ // YZ inform about the composition of the hadron calorimeter section:
+ // thickness in mm of Cu radiator (Y) and of scintillator (Z), and number of scintillator layers (M)
+ // Valid geometries are G56_2_55_19_104_14
+ // G56_2_55_19 or EMCAL_5655_21
+ // G65_2_64_19 or EMCAL_6564_21
+
+ fgInit = kFALSE; // Assume failer untill proven otherwise.
+ TString name(GetName()) ;
+
+ if ( name == "G56_2_55_19_104_14" ) {
+ fPRPbRadThickness = 0.5; // cm, Thickness of the Pb radiators for the preshower section
+ fPRScintThick = 0.6; // cm, Thickness of the sintilator for the preshower section of the tower
+ fNPRLayers = 2; // number of scintillator layers in the preshower section
+
+ fECPbRadThickness = 0.5; // cm, Thickness of the Pb radiators for the EM calorimeter section
+ fECScintThick = 0.5; // cm, Thickness of the sintilator for the EM alorimeter section of the tower
+ fNECLayers = 19; // number of scintillator layers in the EM calorimeter section
+
+ fHCCuRadThickness = 1.0; // cm, Thickness of the Cu radiators.
+ fHCScintThick = 0.4; // cm, Thickness of the sintilator for the hadronic alorimeter section of the tower
+ fNHCLayers = 14; // number of scintillator layers in the hadronic calorimeter section
+
+ fSampling = 11.3 ;
+ fSummationFraction = 0.8 ;
+
+ fAlFrontThick = 3.0; // cm, Thickness of front Al layer
+ fGap2Active = 1.0; // cm, Gap between Al and 1st Scintillator
+ }
+ else if ( name == "G56_2_55_19" || name == "EMCAL_5655_21" ) {
+ fPRPbRadThickness = 0.5; // cm, Thickness of the Pb radiators for the preshower section
+ fPRScintThick = 0.6; // cm, Thickness of the sintilator for the preshower section of the tower
+ fNPRLayers = 2; // number of scintillator layers in the preshower section
+
+ fECPbRadThickness = 0.5; // cm, Thickness of the Pb radiators for the EM calorimeter section
+ fECScintThick = 0.5; // cm, Thickness of the sintilator for the EM alorimeter section of the tower
+ fNECLayers = 19; // number of scintillator layers in the EM calorimeter section
+
+ fHCCuRadThickness = 0.0; // cm, Thickness of the Cu radiators.
+ fHCScintThick = 0.0; // cm, Thickness of the sintilator for the hadronic alorimeter section of the tower
+ fNHCLayers = 0; // number of scintillator layers in the hadronic calorimeter section
+
+ fSampling = 11.3 ;
+ fSummationFraction = 0.8 ;
+
+ fAlFrontThick = 3.0; // cm, Thickness of front Al layer
+ fGap2Active = 1.0; // cm, Gap between Al and 1st Scintillator
+ }
+ else if ( name == "G65_2_64_19" || name == "EMCAL_6564_21" ) {
+ fPRPbRadThickness = 0.6; // cm, Thickness of the Pb radiators for the preshower section
+ fPRScintThick = 0.5; // cm, Thickness of the sintilator for the preshower section of the tower
+ fNPRLayers = 2; // number of scintillator layers in the preshower section
+
+ fECPbRadThickness = 0.6; // cm, Thickness of the Pb radiators for the EM calorimeter section
+ fECScintThick = 0.4; // cm, Thickness of the sintilator for the EM alorimeter section of the tower
+ fNECLayers = 19; // number of scintillator layers in the EM calorimeter section
+
+ fHCCuRadThickness = 0.0; // cm, Thickness of the Cu radiators.
+ fHCScintThick = 0.0; // cm, Thickness of the sintilator for the hadronic alorimeter section of the tower
+ fNHCLayers = 0; // number of scintillator layers in the hadronic calorimeter section
+
+ fSampling = 16. ;
+ fSummationFraction = 0.8 ;
+
+ fAlFrontThick = 3.0; // cm, Thickness of front Al layer
+ fGap2Active = 1.0; // cm, Gap between Al and 1st Scintillator
+ }
+ else
+ Fatal("Init", "%s is an undefined geometry!", name.Data()) ;
+
+ // if( name != "EMCALArch1a" &&
+// name != "EMCALArch1b" &&
+// name != "EMCALArch2a" &&
+// name != "EMCALArch2b" &&
+// name != "EMCALArch1aN" ){
+// Fatal("Init", "%s is not a known geometry (choose among EMCALArch1a, EMCALArch1b, EMCALArch2a and EMCALArch2b, EMCALArch1aN)", name.Data()) ;
+// } // end if
+// //
+// if ( name == "EMCALArch1a" ||
+// name == "EMCALArch1b" ||
+// name == "EMCALArch1aN") {
+// fNZ = 96;
+// fNPhi = 144;
+// } // end if
+// if ( name == "EMCALArch2a" ||
+// name == "EMCALArch2b" ) {
+// fNZ = 112;
+// fNPhi = 168;
+// } // end if
+// if ( name == "EMCALArch1a" ||
+// name == "EMCALArch2a" ) {
+// fNPRLayers = 2;
+// fNECLayers = 19;
+// fNHCLayers = 0;
+// } // end if
+// if ( name == "EMCALArch1b" ||
+// name == "EMCALArch2b" ) {
+// fNPRLayers = 2;
+// fNECLayers = 23;
+// fNHCLayers = 0;
+// } // end if
+// if ( name == "EMCALArch1aN") {
+// fNPRLayers = 2;
+// fNECLayers = 19;
+// fNHCLayers = 14;
+// }
+
+ // geometry
+ fNZ = 96; // granularity along Z (eta)
+ fNPhi = 144; // granularity in phi (azimuth)
+ fArm1PhiMin = 60.0; // degrees, Starting EMCAL Phi position
+ fArm1PhiMax = 180.0; // degrees, Ending EMCAL Phi position
+ fArm1EtaMin = -0.7; // pseudorapidity, Starting EMCAL Eta position
+ fArm1EtaMax = +0.7; // pseudorapidity, Ending EMCAL Eta position
+
+ fIPDistance = 454.0; // cm, Radial distance to inner surface of EMCAL
+ fShellThickness = fAlFrontThick + fGap2Active + 2.*(GetPRScintThick() + GetPRPbRadThick()) + // pre shower
+ (fNECLayers-1)*(GetECScintThick()+ GetECPbRadThick()) + // E cal -1 because the last element is a scintillator
+ fNHCLayers*(GetHCScintThick()+ GetHCCuRadThick()) + // H cal
+ GetHCScintThick() ; // last scintillator
+ fZLength = 2.*ZFromEtaR(fIPDistance+fShellThickness,fArm1EtaMax); // Z coverage
+ fEnvelop[0] = fIPDistance; // mother volume inner radius
+ fEnvelop[1] = fIPDistance + fShellThickness; // mother volume outer r.
+ fEnvelop[2] = 1.00001*fZLength; // add some padding for mother volume.
+
+ fgInit = kTRUE;
+
+ Info("Init", "geometry of EMCAL named %s is as follows:", name.Data());
+ printf( "Tower geometry pre-shower: %d x (%f mm Pb, %f mm Sc) \n", GetNPRLayers(), GetPRPbRadThick(), GetPRScintThick() ) ;
+ printf( " ECAL : %d x (%f mm Pb, %f mm Sc) \n", GetNECLayers(), GetECPbRadThick(), GetECScintThick() ) ;
+ if ( GetNHCLayers() > 0 )
+ printf( " HCAL : %d x (%f mm Pb, %f mm Sc) \n", GetNHCLayers(), GetHCCuRadThick(), GetHCScintThick() ) ;
+ printf("Granularity: %d in eta and %d in phi\n", GetNZ(), GetNPhi()) ;
+ printf("Layout: phi = (%f, %f), eta = (%f, %f), y = %f\n",
+ GetArm1PhiMin(), GetArm1PhiMax(),GetArm1EtaMin(), GetArm1EtaMax(), GetIPDistance() ) ;
}
+
//______________________________________________________________________
AliEMCALGeometry * AliEMCALGeometry::GetInstance(){
- // Returns the pointer of the unique instance
-
- return (AliEMCALGeometry *) fgGeom;
+ // Returns the pointer of the unique instance
+
+ return static_cast<AliEMCALGeometry *>( fgGeom ) ;
}
+
//______________________________________________________________________
AliEMCALGeometry* AliEMCALGeometry::GetInstance(const Text_t* name,
const Text_t* title){
} // end if strcmp(name,"")
}else{
if ( strcmp(fgGeom->GetName(), name) != 0 ) {
- cout << "AliEMCALGeometry <E> : current geometry is "
- << fgGeom->GetName() << endl
- << " you cannot call " << name
- << endl;
+ TString message("\n") ;
+ message += "current geometry is " ;
+ message += fgGeom->GetName() ;
+ message += "\n you cannot call " ;
+ message += name ;
+ ::Info("GetGeometry", message.Data() ) ;
}else{
- rv = (AliEMCALGeometry *) fgGeom;
+ rv = (AliEMCALGeometry *) fgGeom;
} // end if
} // end if fgGeom
return rv;
}
-//______________________________________________________________________
-Int_t AliEMCALGeometry::TowerIndex(Int_t ieta,Int_t iphi,Int_t ipre){
- // Returns the tower index number from the based on the Z and Phi
- // index numbers. There are 2 times the number of towers to separate
- // out the full towsers from the pre-towsers.
- // Inputs:
- // Int_t ieta // index allong z axis [1-fNZ]
- // Int_t iphi // index allong phi axis [1-fNPhi]
- // Int_t ipre // 0 = Full tower, 1 = Pre-shower tower only. [0,1]
- // Outputs:
- // none.
- // Returned
- // Int_t the absoulute tower index. [1-2*fNZ*fNPhi]
- Int_t index;
- if((ieta<=0 || ieta>GetNEta()) || (iphi<=0 || iphi>GetNPhi()) ||
- (ipre<0 || ipre>1) ){
- cout << "inputs out of range ieta=" << ieta << " [1-" << GetNEta();
- cout << "] iphi=" << iphi << " [1-" << GetNPhi() << "] ipre=";
- cout << ipre << "[0,1]. returning -1" << endl;
- return -1;
- } // end if
- index = iphi + GetNPhi()*(ieta-1) + ipre*(GetNPhi()*GetNEta());
- return index;
+//______________________________________________________________________
+Int_t AliEMCALGeometry::TowerIndex(Int_t ieta,Int_t iphi) const {
+ // Returns the tower index number from the based on the Z and Phi
+ // index numbers. There are 2 times the number of towers to separate
+ // out the full towers from the pre-showers.
+ // Inputs:
+ // Int_t ieta // index allong z axis [1-fNZ]
+ // Int_t iphi // index allong phi axis [1-fNPhi]
+ // Int_t where // 1 = PRE section, 0 = EC section, 2 = HC section
+ // Outputs:
+ // none.
+ // Returned
+ // Int_t index // Tower index number
+
+ if ( (ieta <= 0 || ieta>GetNEta()) ||
+ (iphi <= 0 || iphi>GetNPhi()))
+ Fatal("TowerIndex", "Unexpected parameters eta = %d phi = %d!", ieta, iphi) ;
+
+ return ( (iphi - 1)*GetNEta() + ieta );
}
+
//______________________________________________________________________
void AliEMCALGeometry::TowerIndexes(Int_t index,Int_t &ieta,Int_t &iphi,
- Int_t &ipre){
- // given the tower index number it returns the based on the Z and Phi
- // index numbers and if it is for the full tower or the pre-tower number.
- // There are 2 times the number of towers to separate
- // out the full towsers from the pre-towsers.
- // Inputs:
- // Int_t index // Tower index number [1-2*fNZ*fNPhi]
- // Outputs:
- // Int_t ieta // index allong z axis [1-fNZ]
- // Int_t iphi // index allong phi axis [1-fNPhi]
- // Int_t ipre // 0 = Full tower, 1 = Pre-shower tower only. [0,1]
- // Returned
- // none.
- Int_t itowers;
-
- itowers = GetNEta()*GetNPhi();
- if(index<1 || index>2*itowers){
- cout << "index=" << index <<" is out of range [1-";
- cout << 2*itowers << "], returning -1 for all." << endl;
- ieta = -1; iphi = -1; ipre = -1;
- return ;
- } // end if
- ipre = 0;
- if(index>itowers){ // pre shower indexs
- ipre = 1;
- index = index - itowers;
- } // end if
- ieta = 1+ (Int_t)(index/GetNPhi());
- iphi = index - GetNPhi()*(ieta-1) +1;
- return;
+ Int_t &ipre) const {
+ // Inputs:
+ // Int_t index // Tower index number [1-i*fNZ*fNPhi] PRE(i=1)/ECAL(i=2)/HCAL(i=3)
+ // Outputs:
+ // Int_t ieta // index allong z axis [1-fNZ]
+ // Int_t iphi // index allong phi axis [1-fNPhi]
+ // Int_t ipre // 0 = ECAL section, 1 = Pre-shower section, 2 = HCAL section
+ // Returned
+ // none.
+
+
+ Int_t nindex = 0, itowers = GetNEta() * GetNPhi();
+
+ if ( IsInPRE(index) ) { // PRE index
+ nindex = index - itowers;
+ ipre = 1 ;
+ }
+ else if ( IsInECAL(index) ) { // ECAL index
+ nindex = index ;
+ ipre = 0 ;
+ }
+ else if ( IsInHCAL(index) ) { // HCAL index
+ nindex = index - 2*itowers;
+ ipre = 2 ;
+ }
+ else
+ Fatal("TowerIndexes", "Unexpected Id number!") ;
+
+ if (nindex%GetNZ())
+ iphi = nindex / GetNZ() + 1 ;
+ else
+ iphi = nindex / GetNZ() ;
+ ieta = nindex - (iphi - 1) * GetNZ() ;
+
+ if (gDebug==2)
+ Info("TowerIndexes", "index=%d,%d, ieta=%d, iphi = %d", index, nindex,ieta, iphi) ;
+ return;
+
}
+
//______________________________________________________________________
-void AliEMCALGeometry::EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi){
+void AliEMCALGeometry::EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi) const {
// given the tower index number it returns the based on the eta and phi
// of the tower.
// Inputs:
- // Int_t index // Tower index number [1-2*fNZ*fNPhi]
+ // Int_t index // Tower index number [1-i*fNZ*fNPhi] PRE(i=1)/ECAL(i=2)/HCAL(i=3)
// Outputs:
// Float_t eta // eta of center of tower in pseudorapidity
// Float_t phi // phi of center of tower in degrees
// Returned
// none.
- Int_t ieta,iphi,ipre;
- Double_t deta,dphi,phid;
+ Int_t ieta, iphi, ipre ;
+ Float_t deta, dphi ;
TowerIndexes(index,ieta,iphi,ipre);
- deta = (GetArm1EtaMax()-GetArm1EtaMin())/((Float_t)GetNEta());
- eta = GetArm1EtaMin() + (((Float_t)ieta)-0.5)*deta;
- dphi = (GetArm1PhiMax() - GetArm1PhiMin())/((Float_t)GetNPhi()); // in degrees.
- phid = GetArm1PhiMin() + dphi*((Float_t)iphi -0.5);//iphi range [1-fNphi].
- phi = phid;
+
+ if (gDebug == 2)
+ Info("EtaPhiFromIndex","index = %d, ieta = %d, iphi = %d", index, ieta, iphi) ;
+
+ deta = (GetArm1EtaMax()-GetArm1EtaMin())/(static_cast<Float_t>(GetNEta()));
+ eta = GetArm1EtaMin() + ((static_cast<Float_t>(ieta) - 0.5 ))*deta;
+
+ dphi = (GetArm1PhiMax() - GetArm1PhiMin())/(static_cast<Float_t>(GetNPhi())); // in degrees.
+ phi = GetArm1PhiMin() + dphi*(static_cast<Float_t>(iphi) - 0.5);//iphi range [1-fNphi].
}
+
//______________________________________________________________________
-Int_t AliEMCALGeometry::TowerIndexFromEtaPhi(Float_t eta,Float_t phi){
+Int_t AliEMCALGeometry::TowerIndexFromEtaPhi(Float_t eta,Float_t phi) const {
// returns the tower index number based on the eta and phi of the tower.
// Inputs:
// Float_t eta // eta of center of tower in pseudorapidity
// none.
// Returned
// Int_t index // Tower index number [1-fNZ*fNPhi]
+
Int_t ieta,iphi;
- ieta = 1 + (Int_t)(((Float_t)GetNEta())*(eta-GetArm1EtaMin())/
- (GetArm1EtaMax() - GetArm1EtaMin()));
- if(ieta<=0 || ieta>GetNEta()){
- cout << "TowerIndexFromEtaPhi:";
- cout << "ieta = "<< ieta << " eta=" << eta << " is outside of EMCAL. etamin=";
- cout << GetArm1EtaMin() << " to etamax=" << GetArm1EtaMax();
- cout << " returning -1" << endl;
- return -1;
- } // end if
- iphi = 1 + (Int_t)(((Float_t)GetNPhi())*(phi-GetArm1PhiMin())/
- ((Float_t)(GetArm1PhiMax() - GetArm1PhiMin())));
- if(iphi<=0 || iphi>GetNPhi()){
- cout << "TowerIndexFromEtaPhi:";
- cout << "iphi=" << iphi << " phi=" << phi << " is outside of EMCAL.";
- cout << " Phimin=" << GetArm1PhiMin() << " PhiMax=" << GetArm1PhiMax();
- cout << " returning -1" << endl;
- return -1;
- } // end if
- return TowerIndex(ieta,iphi,0);
+ ieta = static_cast<Int_t> ( 1 + (static_cast<Float_t>(GetNEta()) * (eta - GetArm1EtaMin()) / (GetArm1EtaMax() - GetArm1EtaMin())) ) ;
+
+ if( ieta <= 0 || ieta > GetNEta() ) {
+ Error("TowerIndexFromEtaPhi", "Unexpected (eta, phi) = (%f, %f) value, outside of EMCAL!", eta, phi) ;
+ return -1 ;
+ }
+
+ iphi = static_cast<Int_t> ( 1 + (static_cast<Float_t>(GetNPhi()) * (phi - GetArm1PhiMin()) / (GetArm1PhiMax() - GetArm1PhiMin())) ) ;
+
+ if( iphi <= 0 || iphi > GetNPhi() ) {
+ Error("TowerIndexFromEtaPhi", "Unexpected (eta, phi) = (%f, %f) value, outside of EMCAL!", eta, phi) ;
+ return -1 ;
+ }
+
+ return TowerIndex(ieta,iphi);
}
+
//______________________________________________________________________
-Int_t AliEMCALGeometry::PreTowerIndexFromEtaPhi(Float_t eta,Float_t phi){
+Int_t AliEMCALGeometry::PreTowerIndexFromEtaPhi(Float_t eta,Float_t phi) const {
// returns the pretower index number based on the eta and phi of the tower.
// Inputs:
// Float_t eta // eta of center of tower in pseudorapidity
return GetNEta()*GetNPhi()+TowerIndexFromEtaPhi(eta,phi);
}
+
//______________________________________________________________________
-Bool_t AliEMCALGeometry::AbsToRelNumbering(Int_t AbsId, Int_t *relid){
+Bool_t AliEMCALGeometry::AbsToRelNumbering(Int_t AbsId, Int_t *relid) const {
// Converts the absolute numbering into the following array/
- // relid[0] = EMCAL Module number 1:1 (EMCAL arm number)
- // relid[1] = 0 Not in Pre Shower layers
- // = -1 In Pre Shower
+ // relid[0] = EMCAL Arm number 1:1
+ // relid[1] = 0 ECAL section ; = 1 PRE section; = 2 HCA section
// relid[2] = Row number inside EMCAL
// relid[3] = Column number inside EMCAL
// Input:
TowerIndexes(index,ieta,iphi,ipre);
relid[0] = 1;
- relid[1] = 0;
- if(ipre==1) relid[1] = -1;
+ relid[1] = ipre;
relid[2] = ieta;
relid[3] = iphi;
return rv;
}
+
+//______________________________________________________________________
+void AliEMCALGeometry::PosInAlice(const Int_t *relid, Float_t &theta, Float_t &phi) const
+{
+ // Converts the relative numbering into the local EMCAL-module (x, z)
+ // coordinates
+ Int_t sect = relid[1]; // PRE/ECAL/HCAL section 1/0/2
+ Int_t ieta = relid[2]; // offset along x axis
+ Int_t iphi = relid[3]; // offset along z axis
+ Int_t index;
+ Float_t eta;
+
+ index = TowerIndex(ieta,iphi);
+ EtaPhiFromIndex(index,eta,phi);
+ theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
+
+ // correct for distance to IP different in PRE/ECAL/HCAL
+ Float_t d = 0. ;
+ if (sect == 1)
+ d = GetIP2PRESection() - GetIPDistance() ;
+ else if (sect == 0)
+ d = GetIP2ECALSection() - GetIPDistance() ;
+ else if (sect == 2)
+ d = GetIP2HCALSection() - GetIPDistance() ;
+ else
+ Fatal("PosInAlice", "Unexpected tower section!") ;
+
+ Float_t correction = 1 + d/GetIPDistance() ;
+ Float_t tantheta = TMath::Tan(theta) * correction ;
+ theta = TMath::ATan(tantheta) * TMath::RadToDeg() ;
+ if (theta < 0 )
+ theta += 180. ;
+
+ return;
+}
+
+//______________________________________________________________________
+void AliEMCALGeometry::PosInAlice(const Int_t absid, Float_t &theta, Float_t &phi) const
+{
+ // Converts the relative numbering into the local EMCAL-module (x, z)
+ // coordinates
+
+ Int_t relid[4] ;
+ AbsToRelNumbering(absid, relid) ;
+ Int_t ieta = relid[2]; // offset along x axis
+ Int_t iphi = relid[3]; // offset along z axis
+ Int_t index;
+ Float_t eta;
+
+ index = TowerIndex(ieta,iphi);
+ EtaPhiFromIndex(index,eta,phi);
+ theta = 2.0*TMath::ATan(TMath::Exp(-eta)) ;
+
+ // correct for distance to IP different in PRE/ECAL/HCAL
+ Float_t d = 0. ;
+ if (IsInPRE(absid))
+ d = GetIP2PRESection() - GetIPDistance() ;
+ else if (IsInECAL(absid))
+ d = GetIP2ECALSection() - GetIPDistance() ;
+ else if (IsInHCAL(absid))
+ d = GetIP2HCALSection() - GetIPDistance() ;
+ else
+ Fatal("PosInAlice", "Unexpected id # %d!", absid) ;
+
+ Float_t correction = 1 + d/GetIPDistance() ;
+ Float_t tantheta = TMath::Tan(theta) * correction ;
+ theta = TMath::ATan(tantheta) * TMath::RadToDeg() ;
+ if (theta < 0 )
+ theta += 180. ;
+
+ return;
+}
+
//______________________________________________________________________
-void AliEMCALGeometry::RelPosInModule(const Int_t *relid,Float_t &theta,
- Float_t &phi){
- // Converts the relative numbering into the local PHOS-module (x, z)
- // coordinates
+void AliEMCALGeometry::XYZFromIndex(const Int_t *relid,Float_t &x,Float_t &y, Float_t &z) const {
+ // given the tower relative number it returns the X, Y and Z
+ // of the tower.
+
+ // Outputs:
+ // Float_t x // x of center of tower in cm
+ // Float_t y // y of center of tower in cm
+ // Float_t z // z of centre of tower in cm
+ // Returned
+ // none.
+
+ Float_t eta,theta, phi,cyl_radius=0. ;
+
Int_t ieta = relid[2]; // offset along x axis
Int_t iphi = relid[3]; // offset along z axis
- Int_t ipre = relid[1]; // indecates -1 preshower, or 0 full tower.
+ Int_t ipre = relid[1]; // indicates 0 ECAL section, 1 PRE section, 2 HCAL section.
Int_t index;
- Float_t eta;
-
- if(ipre==-1) ipre = 1;
- index = TowerIndex(ieta,iphi,ipre);
+
+ index = TowerIndex(ieta,iphi);
EtaPhiFromIndex(index,eta,phi);
theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
+
+ if ( ipre == 0 )
+ cyl_radius = GetIP2ECALSection() ;
+ else if ( ipre == 1 )
+ cyl_radius = GetIP2PRESection() ;
+ else if ( ipre == 2 )
+ cyl_radius = GetIP2HCALSection() ;
+ else
+ Fatal("XYZFromIndex", "Unexpected Tower section # %d", ipre) ;
+
+ Double_t kDeg2Rad = TMath::DegToRad() ;
+ x = cyl_radius * TMath::Cos(phi * kDeg2Rad ) ;
+ y = cyl_radius * TMath::Sin(phi * kDeg2Rad ) ;
+ z = cyl_radius / TMath::Tan(theta * kDeg2Rad ) ;
+
+ return;
+}
+
+//______________________________________________________________________
+void AliEMCALGeometry::XYZFromIndex(const Int_t absid, TVector3 &v) const {
+ // given the tower relative number it returns the X, Y and Z
+ // of the tower.
+
+ // Outputs:
+ // Float_t x // x of center of tower in cm
+ // Float_t y // y of center of tower in cm
+ // Float_t z // z of centre of tower in cm
+ // Returned
+ // none.
+
+ Float_t theta, phi,cyl_radius=0. ;
+
+ PosInAlice(absid, theta, phi) ;
+
+ if ( IsInECAL(absid) )
+ cyl_radius = GetIP2ECALSection() ;
+ else if ( IsInPRE(absid) )
+ cyl_radius = GetIP2PRESection() ;
+ else if ( IsInHCAL(absid) )
+ cyl_radius = GetIP2HCALSection() ;
+ else
+ Fatal("XYZFromIndex", "Unexpected Tower section") ;
+
+ Double_t kDeg2Rad = TMath::DegToRad() ;
+ v.SetX(cyl_radius * TMath::Cos(phi * kDeg2Rad ) );
+ v.SetY(cyl_radius * TMath::Sin(phi * kDeg2Rad ) );
+ v.SetZ(cyl_radius / TMath::Tan(theta * kDeg2Rad ) ) ;
+
+ return;
+}
- return;
-}
//______________________________________________________________________
/*
-Boot_t AliEMCALGeometry::AreNeighbours(Int_t index1,Int_t index2){
+Boot_t AliEMCALGeometry::AreNeighbours(Int_t index1,Int_t index2) const {
// Returns kTRUE if the two towers are neighbours or not, including
// diagonals. Both indexes are required to be either towers or preshower.
// Inputs:
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff