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"
28 class AliPHOSRecPoint;
31 class AliPHOSGeometry : public AliGeometry {
36 AliPHOSGeometry(const AliPHOSGeometry & geom) ;
38 virtual ~AliPHOSGeometry(void) ;
39 static AliPHOSGeometry * GetInstance(const Text_t* name, const Text_t* title="") ;
40 static AliPHOSGeometry * GetInstance() ;
41 virtual void GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrixF & /* gmat */) const
42 {GetGlobal(RecPoint,gpos); }
43 virtual void GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const ;
44 virtual void GetGlobalPHOS(const AliPHOSRecPoint* RecPoint, TVector3 & gpos) const ;
45 virtual void GetGlobalPHOS(const AliPHOSRecPoint* RecPoint, TVector3 & gpos, TMatrixF & /* gmat */) const
46 {GetGlobalPHOS(RecPoint,gpos); }
47 virtual Bool_t Impact(const TParticle * particle) const ;
49 AliPHOSGeometry & operator = (const AliPHOSGeometry & /*rvalue*/) {
50 Fatal("operator =", "not implemented") ;
56 static TString Degre(void) { return TString("deg") ; } // a global for degree (deg)
58 static TString Radian(void){ return TString("rad") ; } // a global for radian (rad)
60 Bool_t AbsToRelNumbering(Int_t AbsId, Int_t * RelId) const ;
61 // converts the absolute PHOS numbering to a relative
63 // void EmcModuleCoverage(Int_t m, Double_t & tm, Double_t & tM, Double_t & pm,
64 // Double_t & pM, Option_t * opt = Radian() ) const ;
65 // // calculates the angular coverage in theta and phi of a EMC module
66 // void EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt = Radian() ) const ;
67 // // calculates the angular coverage in theta and phi of a
68 // // single crystal in a EMC module
70 void ImpactOnEmc(Double_t * vtx, Double_t theta, Double_t phi,
71 Int_t & ModuleNumber, Double_t & z, Double_t & x) const ;
72 // void ImpactOnEmc(const TVector3& vec, Int_t & ModuleNumber,
73 // Double_t & z, Double_t & x) const ;
74 // void ImpactOnEmc(const TParticle& p, Int_t & ModuleNumber,
75 // Double_t & z, Double_t & x) const ;
76 // // calculates the impact coordinates of a neutral particle
77 // // emitted in direction theta and phi in ALICE
78 Bool_t IsInEMC(Int_t id) const { if (id > GetNModules() * GetNCristalsInModule() ) return kFALSE; return kTRUE; }
79 void RelPosInModule(const Int_t * RelId, Float_t & y, Float_t & z) const ;
80 // gets the position of element (pad or Xtal) relative to
81 // center of PHOS module
82 void RelPosInAlice(Int_t AbsId, TVector3 & pos) const ;
83 // gets the position of element (pad or Xtal) relative to Alice
84 Bool_t RelToAbsNumbering(const Int_t * RelId, Int_t & AbsId) const ;
85 // converts the absolute PHOS numbering to a relative
86 void RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & AbsId) const;
87 // converts local PHOS-module (x, z) coordinates to absId
88 void GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x, Float_t z, TVector3& vInc) const ;
89 //calculates vector from vertex to current point in module local frame
90 void Local2Global(Int_t module, Float_t x, Float_t z, TVector3 &globaPos) const ;
92 Bool_t IsInitialized(void) const { return fgInit ; }
94 // Return general PHOS parameters
95 Int_t GetNModules(void) const { return fNModules ; }
96 Float_t GetPHOSAngle(Int_t index) const { return fPHOSAngle[index-1] ; }
97 Float_t* GetPHOSParams(void) { return fPHOSParams;} //Half-sizes of PHOS trapecoid
98 Float_t GetIPtoUpperCPVsurface(void) const { return fIPtoUpperCPVsurface ; }
99 Float_t GetOuterBoxSize(Int_t index) const { return 2.*fPHOSParams[index]; }
100 Float_t GetCrystalSize(Int_t index) const { return fGeometryEMCA->GetCrystalSize(index) ; }
101 Float_t GetCellStep(void) const { return 2.*fGeometryEMCA->GetAirCellHalfSize()[0];}
103 Float_t GetModuleCenter(Int_t module, Int_t axis) const {
104 return fModuleCenter[module][axis];}
105 Float_t GetModuleAngle(Int_t module, Int_t axis, Int_t angle) const {
106 return fModuleAngle[module][axis][angle];}
109 // Return ideal EMCA geometry parameters
111 AliPHOSEMCAGeometry * GetEMCAGeometry() const {return fGeometryEMCA ;}
112 Float_t GetIPtoCrystalSurface(void) const { return fGeometryEMCA->GetIPtoCrystalSurface() ; }
113 Float_t GetIPtoOuterCoverDistance(void) const { return fGeometryEMCA->GetIPtoOuterCoverDistance() ; }
114 Int_t GetNPhi(void) const { return fGeometryEMCA->GetNPhi() ; }
115 Int_t GetNZ(void) const { return fGeometryEMCA->GetNZ() ; }
116 Int_t GetNCristalsInModule(void) const { return fGeometryEMCA->GetNPhi() * fGeometryEMCA->GetNZ() ; }
118 // Return ideal CPV geometry parameters
119 Int_t GetNumberOfCPVLayers(void) const { return fGeometryCPV ->GetNumberOfCPVLayers(); }
120 Float_t GetCPVActiveSize(Int_t index) const { return fGeometryCPV->GetCPVActiveSize(index); }
121 Int_t GetNumberOfCPVChipsPhi(void) const { return fGeometryCPV->GetNumberOfCPVChipsPhi(); }
122 Int_t GetNumberOfCPVChipsZ(void) const { return fGeometryCPV->GetNumberOfCPVChipsZ(); }
123 Int_t GetNumberOfCPVPadsPhi(void) const { return fGeometryCPV->GetNumberOfCPVPadsPhi(); }
124 Int_t GetNumberOfCPVPadsZ(void) const { return fGeometryCPV->GetNumberOfCPVPadsZ(); }
125 Float_t GetPadSizePhi(void) const { return fGeometryCPV->GetCPVPadSizePhi(); }
126 Float_t GetPadSizeZ(void) const { return fGeometryCPV->GetCPVPadSizeZ(); }
127 Float_t GetGassiplexChipSize(Int_t index) const { return fGeometryCPV->GetGassiplexChipSize(index); }
128 Float_t GetCPVGasThickness(void) const { return fGeometryCPV->GetCPVGasThickness(); }
129 Float_t GetCPVTextoliteThickness(void) const { return fGeometryCPV->GetCPVTextoliteThickness(); }
130 Float_t GetCPVCuNiFoilThickness(void) const { return fGeometryCPV->GetCPVCuNiFoilThickness(); }
131 Float_t GetFTPosition(Int_t index) const { return fGeometryCPV->GetFTPosition(index); }
132 Float_t GetCPVFrameSize(Int_t index) const { return fGeometryCPV->GetCPVFrameSize(index); }
133 Float_t GetCPVBoxSize(Int_t index) const { return fGeometryCPV ->GetCPVBoxSize(index); }
134 Float_t GetIPtoCPVDistance(void) const { return GetIPtoOuterCoverDistance() -
135 GetCPVBoxSize(1) - 1.0; }
138 // Return real CPV geometry parameters
139 void GetModuleCenter(TVector3& center, const char *det, Int_t module) const;
140 void Global2Local(TVector3& localPosition,
141 const TVector3& globalPosition,
144 // Return PHOS' support geometry parameters
146 Float_t GetRailOuterSize(Int_t index) const { return fGeometrySUPP->GetRailOuterSize(index); }
147 Float_t GetRailPart1 (Int_t index) const { return fGeometrySUPP->GetRailPart1 (index); }
148 Float_t GetRailPart2 (Int_t index) const { return fGeometrySUPP->GetRailPart2 (index); }
149 Float_t GetRailPart3 (Int_t index) const { return fGeometrySUPP->GetRailPart3 (index); }
150 Float_t GetRailPos (Int_t index) const { return fGeometrySUPP->GetRailPos (index); }
151 Float_t GetRailLength (void) const { return fGeometrySUPP->GetRailLength (); }
152 Float_t GetDistanceBetwRails(void) const { return fGeometrySUPP->GetDistanceBetwRails(); }
153 Float_t GetRailsDistanceFromIP(void) const { return fGeometrySUPP->GetRailsDistanceFromIP();}
154 Float_t GetRailRoadSize (Int_t index) const { return fGeometrySUPP->GetRailRoadSize (index); }
155 Float_t GetCradleWallThickness(void) const { return fGeometrySUPP->GetCradleWallThickness();}
156 Float_t GetCradleWall (Int_t index) const { return fGeometrySUPP->GetCradleWall (index); }
157 Float_t GetCradleWheel (Int_t index) const { return fGeometrySUPP->GetCradleWheel (index); }
158 void Init(void) ; // steering method for PHOS and PPSD/CPV
163 AliPHOSGeometry(const Text_t* name, const Text_t* title="") ;
166 Int_t fNModules ; // Number of modules constituing PHOS
167 Float_t fAngle ; // Position angles between modules
168 Float_t *fPHOSAngle ; //[fNModules] Position angles of modules
169 Float_t fPHOSParams[4] ; // Half-sizes of PHOS trapecoid
170 Float_t fIPtoUpperCPVsurface; // Minimal distance from IP to PHOS
171 Float_t fCrystalShift ; //Distance from crystal center to front surface
172 Float_t fCryCellShift ; //Distance from crystal center to front surface
173 TObjArray *fRotMatrixArray ; // Liste of rotation matrices (one per phos module)
174 AliPHOSEMCAGeometry *fGeometryEMCA ; // Geometry object for Electromagnetic calorimeter
175 AliPHOSCPVGeometry *fGeometryCPV ; // Geometry object for CPV (IHEP)
176 AliPHOSSupportGeometry *fGeometrySUPP ; // Geometry object for PHOS support
177 Float_t fModuleCenter[5][3]; // xyz-position of the module center
178 Float_t fModuleAngle[5][3][2]; // polar and azymuth angles for 3 axes of modules
180 void SetPHOSAngles(); // calculates the PHOS modules PHI angle
182 static AliPHOSGeometry * fgGeom ; // pointer to the unique instance of the singleton
183 static Bool_t fgInit ; // Tells if geometry has been succesfully set up
185 ClassDef(AliPHOSGeometry,2) // PHOS geometry class
189 #endif // AliPHOSGEOMETRY_H