1 #ifndef ALIPHOSGEOMETRY_H
2 #define ALIPHOSGEOMETRY_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //_________________________________________________________________________
9 // Geometry class for PHOS : singleton
10 // PHOS consists of the electromagnetic calorimeter (EMCA)
11 // and a charged particle veto either in the Subatech's version (PPSD)
12 // or in the IHEP's one (CPV).
13 // The EMCA/PPSD/CPV modules are parametrized so that any configuration
14 // can be easily implemented
15 // The title is used to identify the version of CPV used.
17 //*-- Author: Yves Schutz (SUBATECH)
19 // --- ROOT system ---
21 // --- AliRoot header files ---
23 #include "AliGeometry.h"
24 #include "AliPHOSEMCAGeometry.h"
25 #include "AliPHOSCPVGeometry.h"
26 #include "AliPHOSSupportGeometry.h"
29 class AliPHOSGeometry : public AliGeometry {
35 AliPHOSGeometry(const AliPHOSGeometry & geom) : AliGeometry(geom) {
36 Fatal("cpy ctor", "not implemented") ;
39 virtual ~AliPHOSGeometry(void) ;
40 static AliPHOSGeometry * GetInstance(const Text_t* name, const Text_t* title="") ;
41 static AliPHOSGeometry * GetInstance() ;
42 virtual void GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const ;
43 virtual void GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const ;
44 virtual Bool_t Impact(const TParticle * particle) const ;
46 AliPHOSGeometry & operator = (const AliPHOSGeometry & /*rvalue*/) const {
47 Fatal("operator =", "nt implemented") ; return *(GetInstance()) ; }
51 static TString Degre(void) { return TString("deg") ; } // a global for degree (deg)
53 static TString Radian(void){ return TString("rad") ; } // a global for radian (rad)
55 Bool_t AbsToRelNumbering(const Int_t AbsId, Int_t * RelId) const ;
56 // converts the absolute PHOS numbering to a relative
58 void EmcModuleCoverage(const Int_t m, Double_t & tm, Double_t & tM, Double_t & pm,
59 Double_t & pM, Option_t * opt = Radian() ) const ;
60 // calculates the angular coverage in theta and phi of a EMC module
61 void EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt = Radian() ) const ;
62 // calculates the angular coverage in theta and phi of a
63 // single crystal in a EMC module
64 void ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber,
65 Double_t & z, Double_t & x) const ;
66 // calculates the impact coordinates of a neutral particle
67 // emitted in direction theta and phi in ALICE
68 Bool_t IsInEMC(const Int_t id) const { if (id > GetNModules() * GetNCristalsInModule() ) return kFALSE; return kTRUE; }
69 void RelPosInModule(const Int_t * RelId, Float_t & y, Float_t & z) const ;
70 // gets the position of element (pad or Xtal) relative to
71 // center of PHOS module
72 void RelPosInAlice(const Int_t AbsId, TVector3 & pos) const ;
73 // gets the position of element (pad or Xtal) relative to Alice
74 Bool_t RelToAbsNumbering(const Int_t * RelId, Int_t & AbsId) const ;
75 // converts the absolute PHOS numbering to a relative
77 Bool_t IsInitialized(void) const { return fgInit ; }
79 // Return general PHOS parameters
80 Int_t GetNModules(void) const { return fNModules ; }
81 Float_t GetPHOSAngle(Int_t index) const { return fPHOSAngle[index-1] ; }
82 Float_t* GetPHOSParams(void) { return fPHOSParams;} //Half-sizes of PHOS trapecoid
83 Float_t GetIPtoUpperCPVsurface(void) const { return fIPtoUpperCPVsurface ; }
84 Float_t GetOuterBoxSize(Int_t index) const { return 2.*fPHOSParams[index]; }
85 Float_t GetCrystalSize(Int_t index) const { return fGeometryEMCA->GetCrystalSize(index) ; }
86 Float_t GetCellStep(void) const { return 2*(fGeometryEMCA->GetAirCellHalfSize()[0] +
87 fGeometryEMCA->GetStripWallWidthOut()) ;}
89 // Return EMCA geometry parameters
91 AliPHOSEMCAGeometry * GetEMCAGeometry() const {return fGeometryEMCA ;}
92 Float_t GetIPtoCrystalSurface(void) const { return fGeometryEMCA->GetIPtoCrystalSurface() ; }
93 Float_t GetIPtoOuterCoverDistance(void) const { return fGeometryEMCA->GetIPtoOuterCoverDistance() ; }
94 Int_t GetNPhi(void) const { return fGeometryEMCA->GetNPhi() ; }
95 Int_t GetNZ(void) const { return fGeometryEMCA->GetNZ() ; }
96 Int_t GetNCristalsInModule(void) const { return fGeometryEMCA->GetNPhi() * fGeometryEMCA->GetNZ() ; }
98 // Return CPV geometry parameters
99 Int_t GetNumberOfCPVLayers(void) const { return fGeometryCPV ->GetNumberOfCPVLayers(); }
100 Float_t GetCPVActiveSize(Int_t index) const { return fGeometryCPV->GetCPVActiveSize(index); }
101 Int_t GetNumberOfCPVChipsPhi(void) const { return fGeometryCPV->GetNumberOfCPVChipsPhi(); }
102 Int_t GetNumberOfCPVChipsZ(void) const { return fGeometryCPV->GetNumberOfCPVChipsZ(); }
103 Int_t GetNumberOfCPVPadsPhi(void) const { return fGeometryCPV->GetNumberOfCPVPadsPhi(); }
104 Int_t GetNumberOfCPVPadsZ(void) const { return fGeometryCPV->GetNumberOfCPVPadsZ(); }
105 Float_t GetPadSizePhi(void) const { return fGeometryCPV->GetCPVPadSizePhi(); }
106 Float_t GetPadSizeZ(void) const { return fGeometryCPV->GetCPVPadSizeZ(); }
107 Float_t GetGassiplexChipSize(Int_t index) const { return fGeometryCPV->GetGassiplexChipSize(index); }
108 Float_t GetCPVGasThickness(void) const { return fGeometryCPV->GetCPVGasThickness(); }
109 Float_t GetCPVTextoliteThickness(void) const { return fGeometryCPV->GetCPVTextoliteThickness(); }
110 Float_t GetCPVCuNiFoilThickness(void) const { return fGeometryCPV->GetCPVCuNiFoilThickness(); }
111 Float_t GetFTPosition(Int_t index) const { return fGeometryCPV->GetFTPosition(index); }
112 Float_t GetCPVFrameSize(Int_t index) const { return fGeometryCPV->GetCPVFrameSize(index); }
113 Float_t GetCPVBoxSize(Int_t index) const { return fGeometryCPV ->GetCPVBoxSize(index); }
114 Float_t GetIPtoCPVDistance(void) const { return GetIPtoOuterCoverDistance() -
115 GetCPVBoxSize(1) - 1.0; }
117 // Return PHOS' support geometry parameters
119 Float_t GetRailOuterSize(Int_t index) const { return fGeometrySUPP->GetRailOuterSize(index); }
120 Float_t GetRailPart1 (Int_t index) const { return fGeometrySUPP->GetRailPart1 (index); }
121 Float_t GetRailPart2 (Int_t index) const { return fGeometrySUPP->GetRailPart2 (index); }
122 Float_t GetRailPart3 (Int_t index) const { return fGeometrySUPP->GetRailPart3 (index); }
123 Float_t GetRailPos (Int_t index) const { return fGeometrySUPP->GetRailPos (index); }
124 Float_t GetRailLength (void) const { return fGeometrySUPP->GetRailLength (); }
125 Float_t GetDistanceBetwRails(void) const { return fGeometrySUPP->GetDistanceBetwRails(); }
126 Float_t GetRailsDistanceFromIP(void) const { return fGeometrySUPP->GetRailsDistanceFromIP();}
127 Float_t GetRailRoadSize (Int_t index) const { return fGeometrySUPP->GetRailRoadSize (index); }
128 Float_t GetCradleWallThickness(void) const { return fGeometrySUPP->GetCradleWallThickness();}
129 Float_t GetCradleWall (Int_t index) const { return fGeometrySUPP->GetCradleWall (index); }
130 Float_t GetCradleWheel (Int_t index) const { return fGeometrySUPP->GetCradleWheel (index); }
134 AliPHOSGeometry(const Text_t* name, const Text_t* title="") : AliGeometry(name, title) {
135 // ctor only for internal usage (singleton)
138 void Init(void) ; // steering method for PHOS and PPSD/CPV
142 Int_t fNModules ; // Number of modules constituing PHOS
143 Float_t fAngle ; // Position angles between modules
144 Float_t *fPHOSAngle ; //[fNModules] Position angles of modules
145 Float_t fPHOSParams[4] ; // Half-sizes of PHOS trapecoid
146 Float_t fIPtoUpperCPVsurface; // Minimal distance from IP to PHOS
147 TObjArray *fRotMatrixArray ; // Liste of rotation matrices (one per phos module)
148 AliPHOSEMCAGeometry *fGeometryEMCA ; // Geometry object for Electromagnetic calorimeter
149 AliPHOSCPVGeometry *fGeometryCPV ; // Geometry object for CPV (IHEP)
150 AliPHOSSupportGeometry *fGeometrySUPP ; // Geometry object for PHOS support
152 void SetPHOSAngles(); // calculates the PHOS modules PHI angle
154 static AliPHOSGeometry * fgGeom ; // pointer to the unique instance of the singleton
155 static Bool_t fgInit ; // Tells if geometry has been succesfully set up
157 ClassDef(AliPHOSGeometry,1) // PHOS geometry class
161 #endif // AliPHOSGEOMETRY_H