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)
21 // --- ROOT system ---
24 #include "TObjArray.h"
27 // --- AliRoot header files ---
29 #include "AliGeometry.h"
31 #include "AliPHOSEMCAGeometry.h"
32 #include "AliPHOSCPVGeometry.h"
33 #include "AliPHOSSupportGeometry.h"
36 class AliPHOSGeometry : public AliGeometry {
42 // must be kept public for root persistency purposes, but should never be called by the outside world
46 AliPHOSGeometry(const AliPHOSGeometry & geom) {
47 // cpy ctor requested by Coding Convention but not yet needed
51 virtual ~AliPHOSGeometry(void) ;
52 static AliPHOSGeometry * GetInstance(const Text_t* name, const Text_t* title="") ;
53 static AliPHOSGeometry * GetInstance() ;
54 virtual void GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const ;
55 virtual void GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const ;
57 AliPHOSGeometry & operator = (const AliPHOSGeometry & rvalue) const {
58 // assignement operator requested by coding convention but not needed
60 return *(GetInstance()) ;
65 static TString Degre(void) { return TString("deg") ; } // a global for degree (deg)
67 static TString Radian(void){ return TString("rad") ; } // a global for radian (rad)
69 Bool_t AbsToRelNumbering(const Int_t AbsId, Int_t * RelId) const ;
70 // converts the absolute PHOS numbering to a relative
72 void EmcModuleCoverage(const Int_t m, Double_t & tm, Double_t & tM, Double_t & pm,
73 Double_t & pM, Option_t * opt = Radian() ) const ;
74 // calculates the angular coverage in theta and phi of a EMC module
75 void EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt = Radian() ) const ;
76 // calculates the angular coverage in theta and phi of a
77 // single crystal in a EMC module
78 void ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber,
79 Double_t & z, Double_t & x) const ;
80 // calculates the impact coordinates of a neutral particle
81 // emitted in direction theta and phi in ALICE
82 void RelPosInModule(const Int_t * RelId, Float_t & y, Float_t & z) const ;
83 // gets the position of element (pad or Xtal) relative to
84 // center of PHOS module
85 void RelPosInAlice(const Int_t AbsId, TVector3 & pos) const ;
86 // gets the position of element (pad or Xtal) relative to Alice
87 Bool_t RelToAbsNumbering(const Int_t * RelId, Int_t & AbsId) const ;
88 // converts the absolute PHOS numbering to a relative
90 Bool_t IsInitialized(void) const { return fgInit ; }
92 // Return general PHOS parameters
93 Int_t GetNModules(void) const { return fNModules ; }
94 Float_t GetPHOSAngle(Int_t index) const { return fPHOSAngle[index-1] ; }
95 Float_t* GetPHOSParams(void) { return fPHOSParams;} //Half-sizes of PHOS trapecoid
96 Float_t GetIPtoUpperCPVsurface(void) const { return fIPtoUpperCPVsurface ; }
97 Float_t GetOuterBoxSize(Int_t index) const { return 2.*fPHOSParams[index]; }
98 Float_t GetCrystalSize(Int_t index) const { return fGeometryEMCA->GetCrystalSize(index) ; }
100 // Return EMCA geometry parameters
102 AliPHOSEMCAGeometry * GetEMCAGeometry() const {return fGeometryEMCA ;}
103 Float_t GetIPtoCrystalSurface(void) const { return fGeometryEMCA->GetIPtoCrystalSurface() ; }
104 Float_t GetIPtoOuterCoverDistance(void) const { return fGeometryEMCA->GetIPtoOuterCoverDistance() ; }
105 Int_t GetNPhi(void) const { return fGeometryEMCA->GetNPhi() ; }
106 Int_t GetNZ(void) const { return fGeometryEMCA->GetNZ() ; }
107 Int_t GetNCristalsInModule(void) const { return fGeometryEMCA->GetNPhi() * fGeometryEMCA->GetNZ() ; }
109 // Return CPV geometry parameters
110 Int_t GetNumberOfCPVLayers(void) const { return fGeometryCPV ->GetNumberOfCPVLayers(); }
111 Float_t GetCPVActiveSize(Int_t index) const { return fGeometryCPV->GetCPVActiveSize(index); }
112 Int_t GetNumberOfCPVChipsPhi(void) const { return fGeometryCPV->GetNumberOfCPVChipsPhi(); }
113 Int_t GetNumberOfCPVChipsZ(void) const { return fGeometryCPV->GetNumberOfCPVChipsZ(); }
114 Int_t GetNumberOfCPVPadsPhi(void) const { return fGeometryCPV->GetNumberOfCPVPadsPhi(); }
115 Int_t GetNumberOfCPVPadsZ(void) const { return fGeometryCPV->GetNumberOfCPVPadsZ(); }
116 Float_t GetPadSizePhi(void) const { return fGeometryCPV->GetCPVPadSizePhi(); }
117 Float_t GetPadSizeZ(void) const { return fGeometryCPV->GetCPVPadSizeZ(); }
118 Float_t GetGassiplexChipSize(Int_t index) const { return fGeometryCPV->GetGassiplexChipSize(index); }
119 Float_t GetCPVGasThickness(void) const { return fGeometryCPV->GetCPVGasThickness(); }
120 Float_t GetCPVTextoliteThickness(void) const { return fGeometryCPV->GetCPVTextoliteThickness(); }
121 Float_t GetCPVCuNiFoilThickness(void) const { return fGeometryCPV->GetCPVCuNiFoilThickness(); }
122 Float_t GetFTPosition(Int_t index) const { return fGeometryCPV->GetFTPosition(index); }
123 Float_t GetCPVFrameSize(Int_t index) const { return fGeometryCPV->GetCPVFrameSize(index); }
124 Float_t GetCPVBoxSize(Int_t index) const { return fGeometryCPV ->GetCPVBoxSize(index); }
125 Float_t GetIPtoCPVDistance(void) const { return GetIPtoOuterCoverDistance() -
126 GetCPVBoxSize(1) - 1.0; }
128 // Return PHOS' support geometry parameters
130 Float_t GetRailOuterSize(Int_t index) const { return fGeometrySUPP->GetRailOuterSize(index); }
131 Float_t GetRailPart1 (Int_t index) const { return fGeometrySUPP->GetRailPart1 (index); }
132 Float_t GetRailPart2 (Int_t index) const { return fGeometrySUPP->GetRailPart2 (index); }
133 Float_t GetRailPart3 (Int_t index) const { return fGeometrySUPP->GetRailPart3 (index); }
134 Float_t GetRailPos (Int_t index) const { return fGeometrySUPP->GetRailPos (index); }
135 Float_t GetRailLength (void) const { return fGeometrySUPP->GetRailLength (); }
136 Float_t GetDistanceBetwRails(void) const { return fGeometrySUPP->GetDistanceBetwRails(); }
137 Float_t GetRailsDistanceFromIP(void) const { return fGeometrySUPP->GetRailsDistanceFromIP();}
138 Float_t GetRailRoadSize (Int_t index) const { return fGeometrySUPP->GetRailRoadSize (index); }
139 Float_t GetCradleWallThickness(void) const { return fGeometrySUPP->GetCradleWallThickness();}
140 Float_t GetCradleWall (Int_t index) const { return fGeometrySUPP->GetCradleWall (index); }
141 Float_t GetCradleWheel (Int_t index) const { return fGeometrySUPP->GetCradleWheel (index); }
145 AliPHOSGeometry(const Text_t* name, const Text_t* title="") : AliGeometry(name, title) {
146 // ctor only for internal usage (singleton)
149 void Init(void) ; // steering method for PHOS and PPSD/CPV
153 Int_t fNModules ; // Number of modules constituing PHOS
154 Float_t fAngle ; // Position angles between modules
155 Float_t *fPHOSAngle ; //[fNModules] Position angles of modules
156 Float_t fPHOSParams[4] ; // Half-sizes of PHOS trapecoid
157 Float_t fIPtoUpperCPVsurface; // Minimal distance from IP to PHOS
158 TObjArray *fRotMatrixArray ; // Liste of rotation matrices (one per phos module)
159 AliPHOSEMCAGeometry *fGeometryEMCA ; // Geometry object for Electromagnetic calorimeter
160 AliPHOSCPVGeometry *fGeometryCPV ; // Geometry object for CPV (IHEP)
161 AliPHOSSupportGeometry *fGeometrySUPP ; // Geometry object for PHOS support
163 void SetPHOSAngles(); // calculates the PHOS modules PHI angle
165 static AliPHOSGeometry * fgGeom ; // pointer to the unique instance of the singleton
166 static Bool_t fgInit ; // Tells if geometry has been succesfully set up
168 ClassDef(AliPHOSGeometry,1) // PHOS geometry class
172 #endif // AliPHOSGEOMETRY_H