1 #ifndef ALIEMCALGEOMETRY_H
2 #define ALIEMCALGEOMETRY_H
3 /* Copyright(c) 1998-2004, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //_________________________________________________________________________
9 // Geometry class for EMCAL : singleton
10 // EMCAL consists of a layers of scintillator, and lead.
12 //*-- Author: Sahal Yacoob (LBL / UCT)
13 //*-- and : Yves Schutz (Subatech)
17 // --- ROOT system ---
23 // --- AliRoot header files ---
25 #include "AliGeometry.h"
27 class AliEMCALGeometry : public AliGeometry {
30 // default ctor, must be kept public for root persistency purposes,
31 // but should never be called by the outside world
33 AliEMCALGeometry(const AliEMCALGeometry& geom):AliGeometry(geom) {
34 // cpy ctor requested by Coding Convention but not yet needed
35 Fatal("Cpy ctor", "Not implemented");
37 virtual ~AliEMCALGeometry(void) ;
38 static AliEMCALGeometry * GetInstance(const Text_t* name,
39 const Text_t* title="") ;
40 static AliEMCALGeometry * GetInstance() ;
41 AliEMCALGeometry & operator = (const AliEMCALGeometry & /*rvalue*/) const {
42 // assignement operator requested by coding convention but not needed
43 Fatal("operator =", "not implemented");
44 return *(GetInstance()) ;
47 Bool_t AreInSameTower(Int_t id1, Int_t id2) const ;
48 virtual void GetGlobal(const AliRecPoint *, TVector3 &, TMatrix &) const {}
49 virtual void GetGlobal(const AliRecPoint *, TVector3 &) const {}
50 virtual Bool_t Impact(const TParticle *) const {return kTRUE;}
52 Bool_t IsInEMCAL(Double_t x, Double_t y, Double_t z) const;
54 Bool_t IsInitialized(void) const { return fgInit ; }
55 // Return EMCA geometrical parameters
57 Float_t GetAlFrontThickness() const { return fAlFrontThick;}
58 Float_t GetArm1PhiMin() const { return fArm1PhiMin ; }
59 Float_t GetArm1PhiMax() const { return fArm1PhiMax ; }
60 Float_t GetArm1EtaMin() const { return fArm1EtaMin;}
61 Float_t GetArm1EtaMax() const { return fArm1EtaMax;}
62 Float_t GetIPDistance() const { return fIPDistance;}
63 Float_t GetIP2ECASection() const { return ( GetIPDistance() + GetAlFrontThickness() + GetGap2Active() ) ; }
64 Float_t GetEnvelop(Int_t index) const { return fEnvelop[index] ; }
65 Float_t GetShellThickness() const { return fShellThickness ; }
66 Float_t GetZLength() const { return fZLength ; }
67 Float_t GetGap2Active() const {return fGap2Active ; }
68 Float_t GetDeltaEta() const {return (fArm1EtaMax-fArm1EtaMin)/
70 Float_t GetDeltaPhi() const {return (fArm1PhiMax-fArm1PhiMin)/
72 Int_t GetNECLayers() const {return fNECLayers ;}
73 Int_t GetNZ() const {return fNZ ;}
74 Int_t GetNEta() const {return fNZ ;}
75 Int_t GetNPhi() const {return fNPhi ;}
76 Int_t GetNTowers() const {return fNPhi * fNZ ;}
77 Float_t GetECPbRadThick()const {return fECPbRadThickness;}
78 Float_t GetECScintThick() const {return fECScintThick;}
79 Float_t GetSampling() const {return fSampling ; }
80 Bool_t IsInECA(Int_t index) const { if ( (index > 0 && (index <= GetNZ() * GetNPhi()))) return kTRUE; else return kFALSE ;}
82 Int_t GetNumberOfSuperModules() {return fNumberOfSuperModules;}
83 Float_t GetPhiModuleSize() const {return fPhiModuleSize;}
84 Float_t GetEtaModuleSize() const {return fEtaModuleSize;}
85 Float_t GetFrontSteelStrip() const {return fFrontSteelStrip;}
86 Float_t GetLateralSteelStrip() const {return fLateralSteelStrip;}
87 Float_t GetPassiveScintThick() const {return fPassiveScintThick;}
88 Float_t GetPhiTileSize() const {return fPhiTileSize;}
89 Float_t GetEtaTileSize() const {return fEtaTileSize;}
90 Int_t GetNPhiSuperModule() const {return fNPhiSuperModule;}
91 Int_t GetNPHIdiv() const {return fNPHIdiv ;}
92 Int_t GetNETAdiv() const {return fNETAdiv ;}
93 Int_t GetNCells() const {return fNCells;}
94 Float_t GetSteelFrontThickness() const { return fSteelFrontThick;}
95 Float_t GetLongModuleSize() const {return fLongModuleSize;}
97 Float_t GetTrd1Angle() const {return fTrd1Angle;}
98 Float_t Get2Trd1Dx2() const {return f2Trd1Dx2;}
99 Float_t GetTrd2AngleY()const {return fTrd2AngleY;}
100 Float_t Get2Trd2Dy2() const {return f2Trd2Dy2;}
101 Float_t GetTubsR() const {return fTubsR;}
102 Float_t GetTubsTurnAngle() const {return fTubsTurnAngle;}
103 // Dabs id <-> indexes; Shish-kebab case
104 Int_t GetAbsCellId(const Int_t nSupMod, const Int_t nTower, const Int_t nIphi, const Int_t nIeta);
105 Bool_t GetCellIndex(const Int_t absId, Int_t &nSupMod, Int_t &nTower, Int_t &nIphi, Int_t &nIeta);
106 void GetCellPhiEtaIndexInSModule(const Int_t nTower, const Int_t nIphi, const Int_t nIeta, Int_t &iphi, Int_t &ieta);
107 Bool_t CheckAbsCellId(Int_t ind); // replace the IsInECA
109 Float_t AngleFromEta(Float_t eta){ // returns theta in radians for a given pseudorapidity
110 return 2.0*TMath::ATan(TMath::Exp(-eta));
112 Float_t ZFromEtaR(Float_t r,Float_t eta){ // returns z in for a given
113 // pseudorapidity and r=sqrt(x*x+y*y).
114 return r/TMath::Tan(AngleFromEta(eta));
116 Int_t TowerIndex(Int_t iz,Int_t iphi) const; // returns tower index
117 // returns tower indexs iz, iphi.
118 void TowerIndexes(Int_t index,Int_t &iz,Int_t &iphi) const;
119 // for a given tower index it returns eta and phi of center of that tower.
120 void EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi) const;
121 // returns x, y, and z (cm) on the inner surface of a given EMCAL Cell specified by relid.
122 void XYZFromIndex(const Int_t *relid,Float_t &x,Float_t &y, Float_t &z) const;
123 void XYZFromIndex(Int_t absid, TVector3 &v) const;
124 // for a given eta and phi in the EMCAL it returns the tower index.
125 Int_t TowerIndexFromEtaPhi(Float_t eta,Float_t phi) const;
126 // for a given eta and phi in the EMCAL it returns the pretower index.
127 void PosInAlice(const Int_t *relid, Float_t &theta, Float_t &phi) const ;
128 void PosInAlice(Int_t absid, Float_t &theta, Float_t &phi) const ;
129 Bool_t AbsToRelNumbering(Int_t AbsId, Int_t *relid) const;
130 void SetNZ(Int_t nz) { fNZ= nz ; printf("SetNZ: Number of modules in Z set to %d", fNZ) ; }
131 void SetNPhi(Int_t nphi) { fNPhi= nphi ; printf("SetNPhi: Number of modules in Phi set to %d", fNPhi) ; }
132 void SetSampling(Float_t samp) { fSampling = samp; printf("SetSampling: Sampling factor set to %f", fSampling) ; }
135 AliEMCALGeometry(const Text_t* name, const Text_t* title="") :
136 AliGeometry(name, title) {// ctor only for internal usage (singleton)
139 void Init(void); // initializes the parameters of EMCAL
142 static AliEMCALGeometry * fgGeom; // pointer to the unique instance of the singleton
143 static Bool_t fgInit; // Tells if geometry has been succesfully set up.
144 Float_t fAlFrontThick; // Thickness of the front Al face of the support box
146 Float_t fECPbRadThickness; // cm, Thickness of the Pb radiators
147 Float_t fECScintThick; // cm, Thickness of the scintillators
148 Int_t fNECLayers; // number of scintillator layers
150 Float_t fArm1PhiMin; // Minimum angular position of EMCAL in Phi (degrees)
151 Float_t fArm1PhiMax; // Maximum angular position of EMCAL in Phi (degrees)
152 Float_t fArm1EtaMin; // Minimum pseudorapidity position of EMCAL in Eta
153 Float_t fArm1EtaMax; // Maximum pseudorapidity position of EMCAL in Eta
155 // Geometry Parameters
156 Float_t fEnvelop[3]; // the GEANT TUB for the detector
157 Float_t fIPDistance; // Radial Distance of the inner surface of the EMCAL
158 Float_t fShellThickness; // Total thickness in (x,y) direction
159 Float_t fZLength; // Total length in z direction
160 Float_t fGap2Active; // Gap between the envelop and the active material
161 Int_t fNZ; // Number of Towers in the Z direction
162 Int_t fNPhi; // Number of Towers in the PHI direction
163 Float_t fSampling; // Sampling factor
165 // Shish-kebab option - 23-aug-04 by PAI; COMPACT, TWIST, TRD1 and TRD2
166 Int_t fNumberOfSuperModules; // default is 12 = 6 * 2
167 Float_t fSteelFrontThick; // Thickness of the front stell face of the support box - 9-sep-04
168 Float_t fFrontSteelStrip; // 13-may-05
169 Float_t fLateralSteelStrip; // 13-may-05
170 Float_t fPassiveScintThick; // 13-may-05
171 Float_t fPhiModuleSize; // Phi -> X
172 Float_t fEtaModuleSize; // Eta -> Y
173 Float_t fPhiTileSize; //
174 Float_t fEtaTileSize; //
175 Float_t fLongModuleSize; //
176 Int_t fNPhiSuperModule; // 6 - number supermodule in phi direction
177 Int_t fNPHIdiv; // number phi dvizion
178 Int_t fNETAdiv; // number eta divizion
180 Int_t fNCells; // number of cells in calo
181 Int_t fNCellsInSupMod; // number cell in super module
182 Int_t fNCellsInTower; // number cell in tower
183 // TRD1 options - 30-sep-04
184 Float_t fTrd1Angle; // angle in x-z plane (in degree)
185 Float_t f2Trd1Dx2; // 2*dx2 for TRD1
186 // TRD2 options - 27-jan-07
187 Float_t fTrd2AngleY; // angle in y-z plane (in degree)
188 Float_t f2Trd2Dy2; // 2*dy2 for TRD2
189 Float_t fEmptySpace; // 2mm om fred drawing
190 // Sumper module as TUBS
191 Float_t fTubsR; // radius of tubs
192 Float_t fTubsTurnAngle; // turn angle of tubs in degree
194 ClassDef(AliEMCALGeometry,9) // EMCAL geometry class
197 #endif // AliEMCALGEOMETRY_H