// -0.7 to 0.7 in eta
// Number of Modules and Layers may be controlled by
// the name of the instance defined
-// EMCALArch2x has more modules along both phi and eta
-// EMCALArchxa has less Layers in the Radial Direction
//*-- Author: Sahal Yacoob (LBL / UCT)
// and : Yves Schutz (SUBATECH)
// and : Jennifer Klay (LBL)
-// --- ROOT system ---
-
-// --- Standard library ---
-//#include <stdlib.h>
-
// --- AliRoot header files ---
-//#include <TError.h>
#include <TMath.h>
#include <TVector3.h>
}
//______________________________________________________________________
-const Bool_t AliEMCALGeometry::AreInSameTower(Int_t id1, Int_t id2) const {
+Bool_t AliEMCALGeometry::AreInSameTower(Int_t id1, Int_t id2) const {
+ // Find out whether two hits are in the same tower
Int_t idmax = TMath::Max(id1, id2) ;
Int_t idmin = TMath::Min(id1, id2) ;
if ( ((idmax - GetNZ() * GetNPhi()) == idmin ) ||
//______________________________________________________________________
void AliEMCALGeometry::Init(void){
// 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)
+ // naming convention : GUV_WX_N_ gives the composition of a tower
// 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 ;
+ // thickness in mm of Pb radiator (W) and of scintillator (X), and number of scintillator layers (N)
+ // New geometry: EMCAL_55_25
- 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
+ fgInit = kFALSE; // Assume failed until proven otherwise.
+ TString name(GetName()) ;
+ if (name == "EMCAL_55_25") {
+ fECPbRadThickness = 0.5; // cm, Thickness of the Pb radiators
+ fECScintThick = 0.5; // cm, Thickness of the scintillator
+ fNECLayers = 25; // number of scintillator layers
- fSampling = 11.3 ;
- fSummationFraction = 0.8 ;
+ fSampling = 13.1; // calculated with Birk's law implementation
- fAlFrontThick = 3.0; // cm, Thickness of front Al layer
+ fAlFrontThick = 3.5; // 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 if( name == "G56_2_55_19" || name == "EMCAL_5655_21" || name == "G56_2_55_19_104_14"|| name == "G65_2_64_19" || name == "EMCAL_6564_21"){
+ Fatal("Init", "%s is an old geometry! Please update your Config file", name.Data()) ;
}
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
+ fNZ = 114; // granularity along Z (eta)
+ fNPhi = 168; // 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
+
+ //There is always one more scintillator than radiator layer because of the first block of aluminium
+ fShellThickness = fAlFrontThick + fGap2Active + fNECLayers*GetECScintThick()+(fNECLayers-1)*GetECPbRadThick();
+
fZLength = 2.*ZFromEtaR(fIPDistance+fShellThickness,fArm1EtaMax); // Z coverage
fEnvelop[0] = fIPDistance; // mother volume inner radius
fEnvelop[1] = fIPDistance + fShellThickness; // mother volume outer r.
fgInit = kTRUE;
if (gDebug) {
- 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("Init: geometry of EMCAL named %s is as follows:", name.Data());
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() ) ;
} // end if strcmp(name,"")
}else{
if ( strcmp(fgGeom->GetName(), name) != 0 ) {
- TString message("\n") ;
- message += "current geometry is " ;
- message += fgGeom->GetName() ;
- message += "\n you cannot call " ;
- message += name ;
- ::Info("GetGeometry", message.Data() ) ;
+ printf("\ncurrent geometry is ") ;
+ printf(fgGeom->GetName());
+ printf("\n you cannot call ");
+ printf(name);
}else{
rv = (AliEMCALGeometry *) fgGeom;
} // end if
//______________________________________________________________________
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.
+ // index numbers.
// 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
+ // Int_t ieta // index along z axis [1-fNZ]
+ // Int_t iphi // index along phi axis [1-fNPhi]
// 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) ;
-
+ (iphi <= 0 || iphi>GetNPhi())) {
+ Error("TowerIndex", "Unexpected parameters eta = %d phi = %d!", ieta, iphi) ;
+ return -1;
+ }
return ( (iphi - 1)*GetNEta() + ieta );
}
//______________________________________________________________________
-void AliEMCALGeometry::TowerIndexes(Int_t index,Int_t &ieta,Int_t &iphi,
- Int_t &ipre) const {
+void AliEMCALGeometry::TowerIndexes(Int_t index,Int_t &ieta,Int_t &iphi) const {
// Inputs:
- // Int_t index // Tower index number [1-i*fNZ*fNPhi] PRE(i=1)/ECAL(i=2)/HCAL(i=3)
+ // Int_t index // Tower index number [1-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 = ECAL section, 1 = Pre-shower section, 2 = HCAL section
// Returned
// none.
-
- Int_t nindex = 0, itowers = GetNEta() * GetNPhi();
+ Int_t nindex = 0;
- if ( IsInPRE(index) ) { // PRE index
- nindex = index - itowers;
- ipre = 1 ;
- }
- else if ( IsInECA(index) ) { // ECAL index
+ if ( IsInECA(index) ) { // ECAL index
nindex = index ;
- ipre = 0 ;
- }
- else if ( IsInHCA(index) ) { // HCAL index
- nindex = index - 2*itowers;
- ipre = 2 ;
}
- else
- Fatal("TowerIndexes", "Unexpected Id number!") ;
-
+ else {
+ Error("TowerIndexes", "Unexpected Id number!") ;
+ ieta = -1;
+ iphi = -1;
+ return;
+ }
+
if (nindex%GetNZ())
iphi = nindex / GetNZ() + 1 ;
else
ieta = nindex - (iphi - 1) * GetNZ() ;
if (gDebug==2)
- Info("TowerIndexes", "index=%d,%d, ieta=%d, iphi = %d", index, nindex,ieta, iphi) ;
+ printf("TowerIndexes: index=%d,%d, ieta=%d, iphi = %d", index, nindex,ieta, iphi) ;
return;
}
// 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-i*fNZ*fNPhi] PRE(i=1)/ECAL(i=2)/HCAL(i=3)
+ // Int_t index // Tower index number [1-fNZ*fNPhi]
// 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 ;
+ Int_t ieta, iphi;
Float_t deta, dphi ;
- TowerIndexes(index,ieta,iphi,ipre);
+ TowerIndexes(index,ieta,iphi);
if (gDebug == 2)
- Info("EtaPhiFromIndex","index = %d, ieta = %d, iphi = %d", index, ieta, iphi) ;
+ printf("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;
return TowerIndex(ieta,iphi);
}
-//______________________________________________________________________
-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
- // Float_t phi // phi of center of tower in degrees
- // Outputs:
- // none.
- // Returned
- // Int_t index // PreTower index number [fNZ*fNPhi-2*fNZ*fNPhi]
-
- return GetNEta()*GetNPhi()+TowerIndexFromEtaPhi(eta,phi);
-}
-
//______________________________________________________________________
Bool_t AliEMCALGeometry::AbsToRelNumbering(Int_t AbsId, Int_t *relid) const {
// Converts the absolute numbering into the following array/
- // 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
+ // relid[0] = Row number inside EMCAL
+ // relid[1] = Column number inside EMCAL
// Input:
// Int_t AbsId // Tower index number [1-2*fNZ*fNPhi]
// Outputs:
- // Int_t *relid // array of 5. Discribed above.
+ // Int_t *relid // array of 2. Described above.
Bool_t rv = kTRUE ;
- Int_t ieta=0,iphi=0,ipre=0,index=AbsId;
+ Int_t ieta=0,iphi=0,index=AbsId;
- TowerIndexes(index,ieta,iphi,ipre);
- relid[0] = 1;
- relid[1] = ipre;
- relid[2] = ieta;
- relid[3] = iphi;
+ TowerIndexes(index,ieta,iphi);
+ relid[0] = ieta;
+ relid[1] = iphi;
return rv;
}
{
// 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 ieta = relid[0]; // offset along x axis
+ Int_t iphi = relid[1]; // 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();
+ //theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
+ theta = 2.0*TMath::ATan(TMath::Exp(-eta));
- // 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 = GetIP2ECASection() - GetIPDistance() ;
- else if (sect == 2)
- d = GetIP2HCASection() - GetIPDistance() ;
- else
- Fatal("PosInAlice", "Unexpected tower section!") ;
+ // correct for distance to IP
+ Float_t d = GetIP2ECASection() - GetIPDistance() ;
Float_t correction = 1 + d/GetIPDistance() ;
Float_t tantheta = TMath::Tan(theta) * correction ;
}
//______________________________________________________________________
-void AliEMCALGeometry::PosInAlice(const Int_t absid, Float_t &theta, Float_t &phi) const
+void AliEMCALGeometry::PosInAlice(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] ;
+ Int_t relid[2] ;
AbsToRelNumbering(absid, relid) ;
- Int_t ieta = relid[2]; // offset along x axis
- Int_t iphi = relid[3]; // offset along z axis
+ Int_t ieta = relid[0]; // offset along x axis
+ Int_t iphi = relid[1]; // offset along z axis
Int_t index;
Float_t eta;
EtaPhiFromIndex(index,eta,phi);
theta = 2.0*TMath::ATan(TMath::Exp(-eta)) ;
- // correct for distance to IP different in PRE/ECAL/HCAL
+ // correct for distance to IP
Float_t d = 0. ;
- if (IsInPRE(absid))
- d = GetIP2PRESection() - GetIPDistance() ;
- else if (IsInECA(absid))
+ if (IsInECA(absid))
d = GetIP2ECASection() - GetIPDistance() ;
- else if (IsInHCA(absid))
- d = GetIP2HCASection() - GetIPDistance() ;
- else
- Fatal("PosInAlice", "Unexpected id # %d!", absid) ;
+ else {
+ Error("PosInAlice", "Unexpected id # %d!", absid) ;
+ return;
+ }
Float_t correction = 1 + d/GetIPDistance() ;
Float_t tantheta = TMath::Tan(theta) * correction ;
// Returned
// none.
- Float_t eta,theta, phi,cyl_radius=0. ;
+ Float_t eta,theta, phi,cylradius=0. ;
- Int_t ieta = relid[2]; // offset along x axis
- Int_t iphi = relid[3]; // offset along z axis
- Int_t ipre = relid[1]; // indicates 0 ECAL section, 1 PRE section, 2 HCAL section.
+ Int_t ieta = relid[0]; // offset along x axis
+ Int_t iphi = relid[1]; // offset along z axis.
Int_t index;
index = TowerIndex(ieta,iphi);
EtaPhiFromIndex(index,eta,phi);
theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
- if ( ipre == 0 )
- cyl_radius = GetIP2ECASection() ;
- else if ( ipre == 1 )
- cyl_radius = GetIP2PRESection() ;
- else if ( ipre == 2 )
- cyl_radius = GetIP2HCASection() ;
- else
- Fatal("XYZFromIndex", "Unexpected Tower section # %d", ipre) ;
+ cylradius = GetIP2ECASection() ;
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 ) ;
+ x = cylradius * TMath::Cos(phi * kDeg2Rad ) ;
+ y = cylradius * TMath::Sin(phi * kDeg2Rad ) ;
+ z = cylradius / TMath::Tan(theta * kDeg2Rad ) ;
return;
}
//______________________________________________________________________
-void AliEMCALGeometry::XYZFromIndex(const Int_t absid, TVector3 &v) const {
+void AliEMCALGeometry::XYZFromIndex(Int_t absid, TVector3 &v) const {
// given the tower relative number it returns the X, Y and Z
// of the tower.
// Returned
// none.
- Float_t theta, phi,cyl_radius=0. ;
+ Float_t theta, phi,cylradius=0. ;
PosInAlice(absid, theta, phi) ;
if ( IsInECA(absid) )
- cyl_radius = GetIP2ECASection() ;
- else if ( IsInPRE(absid) )
- cyl_radius = GetIP2PRESection() ;
- else if ( IsInHCA(absid) )
- cyl_radius = GetIP2HCASection() ;
- else
- Fatal("XYZFromIndex", "Unexpected Tower section") ;
+ cylradius = GetIP2ECASection() ;
+ else {
+ Error("XYZFromIndex", "Unexpected Tower section") ;
+ return;
+ }
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 ) ) ;
+ v.SetX(cylradius * TMath::Cos(phi * kDeg2Rad ) );
+ v.SetY(cylradius * TMath::Sin(phi * kDeg2Rad ) );
+ v.SetZ(cylradius / TMath::Tan(theta * kDeg2Rad ) ) ;
return;
}
-//______________________________________________________________________
-/*
-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:
- // Int_t index1 // index of tower 1
- // Int_t index2 // index of tower 2
- // Outputs:
- // none.
- // Returned
- // Boot_t kTRUE if the towers are neighbours otherwise false.
- Boot_t anb = kFALSE;
- Int_t ieta1 = 0, ieta2 = 0, iphi1 = 0, iphi2 = 0, ipre1 = 0, ipre2 = 0;
-
- TowerIndexes(index1,ieta1,iphi1,ipre1);
- TowerIndexes(index2,ieta2,iphi2,ipre2);
- if(ipre1!=ipre2) return anb;
- if((ieta1>=ieta2-1 && ieta1<=ieta2+1) && (iphi1>=iphi2-1 &&iphi1<=iphi2+1))
- anb = kTRUE;
- return anb;
+Bool_t AliEMCALGeometry::IsInEMCAL(Double_t x, Double_t y, Double_t z) const {
+ // Checks whether point is inside the EMCal volume
+ //
+ // Code uses cylindrical approximation made of inner radius (for speed)
+ //
+ // Points behind EMCAl, i.e. R > outer radius, but eta, phi in acceptance
+ // are considered to inside
+
+ Double_t r=sqrt(x*x+y*y);
+
+ if ( r > fEnvelop[0] ) {
+ Double_t theta;
+ theta = TMath::ATan2(r,z);
+ Double_t eta;
+ if(theta == 0)
+ eta = 9999;
+ else
+ eta = -TMath::Log(TMath::Tan(theta/2.));
+ if (eta < fArm1EtaMin || eta > fArm1EtaMax)
+ return 0;
+
+ Double_t phi = TMath::ATan2(y,x) * 180./TMath::Pi();
+ if (phi > fArm1PhiMin && phi < fArm1PhiMax)
+ return 1;
+ }
+ return 0;
}
- */
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff