//_________________________________________________________________________
// Geometry class for EMCAL : singleton
-// EMCAL consists of a shell of Pb
+// EMCAL consists of a layers of scintillator, and lead.
//
-//*-- Author: Yves Schutz (SUBATECH)
+//*-- Author: Sahal Yacoob (LBL / UCT)
+//*-- and : Yves Schutz (Subatech)
-#include <assert.h>
// --- ROOT system ---
-
-class TObjArray ;
-class TVector3;
-class TMatrix ;
+class TString ;
+class TObjArray ;
+class TVector3 ;
+class TParticle ;
// --- AliRoot header files ---
#include "AliGeometry.h"
-
class AliEMCALGeometry : public AliGeometry {
-
-public:
-
+public:
AliEMCALGeometry() {
- // default ctor
- // must be kept public for root persistency purposes, but should never be called by the outside world
- } ;
-
- AliEMCALGeometry(const AliEMCALGeometry & geom) {
+ // default ctor, must be kept public for root persistency purposes,
+ // but should never be called by the outside world
+ };
+ AliEMCALGeometry(const AliEMCALGeometry& geom):AliGeometry(geom) {
// cpy ctor requested by Coding Convention but not yet needed
- assert(0==1) ;
- }
-
+ Fatal("Cpy ctor", "Not implemented");
+ };
virtual ~AliEMCALGeometry(void) ;
- static AliEMCALGeometry * GetInstance(const Text_t* name, const Text_t* title="") ;
- static AliEMCALGeometry * GetInstance() ;
-
- AliEMCALGeometry & operator = (const AliEMCALGeometry & rvalue) const {
+ static AliEMCALGeometry * GetInstance(const Text_t* name,
+ const Text_t* title="") ;
+ static AliEMCALGeometry * GetInstance() ;
+ AliEMCALGeometry & operator = (const AliEMCALGeometry & /*rvalue*/) const {
// assignement operator requested by coding convention but not needed
- assert(0==1) ;
+ Fatal("operator =", "not implemented");
return *(GetInstance()) ;
- }
+ };
+
+ Bool_t AreInSameTower(Int_t id1, Int_t id2) const ;
virtual void GetGlobal(const AliRecPoint *, TVector3 &, TMatrix &) const {}
virtual void GetGlobal(const AliRecPoint *, TVector3 &) const {}
+ virtual Bool_t Impact(const TParticle *) const {return kTRUE;}
// General
-
- Bool_t IsInitialized(void) const { return fgInit ; }
-
- // Return EMCA geometrical parameters
-
+ Bool_t IsInitialized(void) const { return fgInit ; }
+ // Return EMCA geometrical parameters
// geometry
- const Float_t GetAirGap() const { return fAirGap ; }
- const Float_t GetArm1PhiMin() const { return fArm1PhiMin ; }
- const Float_t GetArm1PhiMax() const { return fArm1PhiMax ; }
- const Float_t GetArm2PhiMin() const { return fArm2PhiMin ; }
- const Float_t GetArm2PhiMax() const { return fArm2PhiMax ; }
- const Float_t GetIPDistance() const { return fIPDistance ; }
- const Float_t GetEnvelop(Int_t index) const { return fEnvelop[index] ; }
- const Float_t GetShellThickness() const { return fShellThickness ; }
- const Float_t GetZLength() const { return fZLength ; }
- const Float_t GetGap2Active() const {return fGap2Active ; }
- // material
- const Float_t GetAmat() const { return fAmat ; }
- const Float_t GetZmat() const { return fZmat ; }
- const Float_t GetDmat() const { return fDmat ; }
- const Float_t GetRmat() const { return fRmat ; }
- const Float_t GetEmat() const { return fEmat ; }
- const Float_t GetLmat() const { return fEmat * fRmat ; }
-
-protected:
-
- AliEMCALGeometry(const Text_t* name, const Text_t* title="") : AliGeometry(name, title) {
- // ctor only for internal usage (singleton)
- Init() ;
+ Float_t GetAlFrontThickness() const { return fAlFrontThick;}
+ Float_t GetArm1PhiMin() const { return fArm1PhiMin ; }
+ Float_t GetArm1PhiMax() const { return fArm1PhiMax ; }
+ Float_t GetArm1EtaMin() const { return fArm1EtaMin;}
+ Float_t GetArm1EtaMax() const { return fArm1EtaMax;}
+ Float_t GetIPDistance() const { return fIPDistance;}
+ Float_t GetIP2ECASection() const { return ( GetIPDistance() + GetAlFrontThickness() + GetGap2Active() ) ; }
+ Float_t GetEnvelop(Int_t index) const { return fEnvelop[index] ; }
+ Float_t GetShellThickness() const { return fShellThickness ; }
+ Float_t GetZLength() const { return fZLength ; }
+ Float_t GetGap2Active() const {return fGap2Active ; }
+ Float_t GetDeltaEta() const {return (fArm1EtaMax-fArm1EtaMin)/
+ ((Float_t)fNZ);}
+ Float_t GetDeltaPhi() const {return (fArm1PhiMax-fArm1PhiMin)/
+ ((Float_t)fNPhi);}
+ Int_t GetNECLayers() const {return fNECLayers ;}
+ Int_t GetNZ() const {return fNZ ;}
+ Int_t GetNEta() const {return fNZ ;}
+ Int_t GetNPhi() const {return fNPhi ;}
+ Int_t GetNTowers() const {return fNPhi * fNZ ;}
+ Float_t GetECPbRadThick()const {return fECPbRadThickness;}
+ Float_t GetECScintThick() const {return fECScintThick;}
+ Float_t GetSampling() const {return fSampling ; }
+ Bool_t IsInECA(Int_t index) const { if ( (index > 0 && (index <= GetNZ() * GetNPhi()))) return kTRUE; else return kFALSE ;}
+
+ Float_t AngleFromEta(Float_t eta){ // returns theta in radians for a given pseudorapidity
+ return 2.0*TMath::ATan(TMath::Exp(-eta));
+ }
+ Float_t ZFromEtaR(Float_t r,Float_t eta){ // returns z in for a given
+ // pseudorapidity and r=sqrt(x*x+y*y).
+ return r/TMath::Tan(AngleFromEta(eta));
}
- void Init(void) ; // initializes the parameters of EMCAL
+ Int_t TowerIndex(Int_t iz,Int_t iphi) const; // returns tower index
+ // returns tower indexs iz, iphi.
+ void TowerIndexes(Int_t index,Int_t &iz,Int_t &iphi) const;
+ // for a given tower index it returns eta and phi of center of that tower.
+ void EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi) const;
+ // returns x, y, and z (cm) on the inner surface of a given EMCAL Cell specified by relid.
+ void XYZFromIndex(const Int_t *relid,Float_t &x,Float_t &y, Float_t &z) const;
+ void XYZFromIndex(Int_t absid, TVector3 &v) const;
+ // for a given eta and phi in the EMCAL it returns the tower index.
+ Int_t TowerIndexFromEtaPhi(Float_t eta,Float_t phi) const;
+ // for a given eta and phi in the EMCAL it returns the pretower index.
+ void PosInAlice(const Int_t *relid, Float_t &theta, Float_t &phi) const ;
+ void PosInAlice(Int_t absid, Float_t &theta, Float_t &phi) const ;
+ Bool_t AbsToRelNumbering(Int_t AbsId, Int_t *relid) const;
+ void SetNZ(Int_t nz) { fNZ= nz ; printf("SetNZ: Number of modules in Z set to %d", fNZ) ; }
+ void SetNPhi(Int_t nphi) { fNPhi= nphi ; printf("SetNPhi: Number of modules in Phi set to %d", fNPhi) ; }
+ void SetSampling(Float_t samp) { fSampling = samp; printf("SetSampling: Sampling factor set to %f", fSampling) ; }
+protected:
+ AliEMCALGeometry(const Text_t* name, const Text_t* title="") :
+ AliGeometry(name, title) {// ctor only for internal usage (singleton)
+ Init();
+ };
+ void Init(void); // initializes the parameters of EMCAL
+
private:
-
- static AliEMCALGeometry * fgGeom ; // pointer to the unique instance of the singleton
- static Bool_t fgInit ; // Tells if geometry has been succesfully set up
-
- // geometry
- Float_t fAirGap ; // Distance between envelop and active material
- Float_t fArm1PhiMin ; // Minimum phi angle covered by Arm 1
- Float_t fArm1PhiMax ; // Maximum phi angle covered by Arm 1
- Float_t fArm2PhiMin ; // Minimum phi angle covered by Arm 2
- Float_t fArm2PhiMax ; // Maximum phi angle covered by Arm 2
- // It is assumed that Arm1 and Arm2 have the same following parameters
- Float_t fEnvelop[3] ; // the GEANT TUB that contains the 2 arms
- Float_t fIPDistance ; // Distance of the inner surface to the interaction point
- Float_t fShellThickness ; // Total thickness in (x,y) direction
- Float_t fZLength ; // Total length in z direction
- Float_t fGap2Active ; // Gap between the envelop and the active material
-
- //material
- Float_t fAmat ; // average atomic weight of the active material
- Float_t fZmat ; // average atomic number of the active material
- Float_t fDmat ; // average density of the active material
- Float_t fRmat ; // average radiation length of the active material
- Float_t fEmat ; // thickness of the active material in radiation length units
-
- ClassDef(AliEMCALGeometry,1) // EMCAL geometry class
-
-} ;
+ static AliEMCALGeometry * fgGeom; // pointer to the unique instance of the singleton
+ static Bool_t fgInit; // Tells if geometry has been succesfully set up.
+ Float_t fAlFrontThick; // Thickness of the front Al face of the support box
+
+ Float_t fECPbRadThickness; // cm, Thickness of the Pb radiators
+ Float_t fECScintThick; // cm, Thickness of the scintillators
+ Int_t fNECLayers; // number of scintillator layers
+
+ Float_t fArm1PhiMin; // Minimum angular position of EMCAL in Phi (degrees)
+ Float_t fArm1PhiMax; // Maximum angular position of EMCAL in Phi (degrees)
+ Float_t fArm1EtaMin; // Minimum pseudorapidity position of EMCAL in Eta
+ Float_t fArm1EtaMax; // Maximum pseudorapidity position of EMCAL in Eta
+
+ // Geometry Parameters
+ Float_t fEnvelop[3]; // the GEANT TUB for the detector
+ Float_t fIPDistance; // Radial Distance of the inner surface of the EMCAL
+ Float_t fShellThickness; // Total thickness in (x,y) direction
+ Float_t fZLength; // Total length in z direction
+ Float_t fGap2Active; // Gap between the envelop and the active material
+ Int_t fNZ; // Number of Towers in the Z direction
+ Int_t fNPhi; // Number of Towers in the Phi Direction
+ Float_t fSampling; // Sampling factor
+
+ ClassDef(AliEMCALGeometry,8) // EMCAL geometry class
+
+ };
#endif // AliEMCALGEOMETRY_H
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff