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New class to make V2 clusters starting from digits or hits (fast simulation). Origin...
[u/mrichter/AliRoot.git] / TRD / AliTRDgeometry.h
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dd9a6ee3 1#ifndef ALITRDGEOMETRY_H
2#define ALITRDGEOMETRY_H
f7336fa3 3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
db30bf0f 6/* $Id$ */
f7336fa3 7
0a29d0f1 8///////////////////////////////////////////////////////////////////////////////
9// //
10// TRD geometry class //
11// //
12///////////////////////////////////////////////////////////////////////////////
13
94de3818 14#include "AliGeometry.h"
f7336fa3 15
5443e65e 16class AliTRDparameter;
17
f7336fa3 18class AliTRDgeometry : public AliGeometry {
19
20 public:
21
dd56b762 22 enum { kNplan = 6, kNcham = 5, kNsect = 18, kNdet = 540 };
23
f7336fa3 24 AliTRDgeometry();
8230f242 25 virtual ~AliTRDgeometry();
f7336fa3 26
cbba4394 27 virtual void CreateGeometry(Int_t *idtmed);
793ff80c 28 virtual Int_t IsVersion() const = 0;
29 virtual void Init();
5443e65e 30 virtual Bool_t Impact(const TParticle * particle) const { return kTRUE; };
31 virtual Bool_t Local2Global(Int_t d, Float_t *local, Float_t *global, AliTRDparameter *par) const;
32 virtual Bool_t Local2Global(Int_t p, Int_t c, Int_t s, Float_t *local, Float_t *global, AliTRDparameter *par) const;
793ff80c 33 virtual Bool_t Rotate(Int_t d, Float_t *pos, Float_t *rot) const;
34 virtual Bool_t RotateBack(Int_t d, Float_t *rot, Float_t *pos) const;
35
36 static Int_t Nsect() { return fgkNsect; };
37 static Int_t Nplan() { return fgkNplan; };
38 static Int_t Ncham() { return fgkNcham; };
39 static Int_t Ndet() { return fgkNdet; };
40
41 static Float_t Rmin() { return fgkRmin; };
42 static Float_t Rmax() { return fgkRmax; };
43 static Float_t Zmax1() { return fgkZmax1; };
44 static Float_t Zmax2() { return fgkZmax2; };
45
46 static Float_t Cwidcha() { return (fgkSwidth2 - fgkSwidth1)
0a770ac9 47 / fgkSheight * (fgkCH + fgkVspace); };
48 static Float_t Cheight() { return fgkCH; };
49 static Float_t Cspace() { return fgkVspace; };
50 static Float_t CraHght() { return fgkCraH; };
51 static Float_t CdrHght() { return fgkCdrH; };
52 static Float_t CamHght() { return fgkCamH; };
53 static Float_t CroHght() { return fgkCroH; };
793ff80c 54 static Float_t MyThick() { return fgkMyThick; };
55 static Float_t DrThick() { return fgkDrThick; };
a2b90f83 56 static Float_t AmThick() { return fgkAmThick; };
a2b90f83 57 static Float_t DrZpos() { return fgkDrZpos; };
17b26de4 58 static Float_t RpadW() { return fgkRpadW; };
59 static Float_t CpadW() { return fgkCpadW; };
793ff80c 60
61 virtual void SetPHOShole() = 0;
62 virtual void SetRICHhole() = 0;
63
8737e16f 64 virtual void SetOldGeometry();
65
793ff80c 66 virtual Bool_t GetPHOShole() const = 0;
67 virtual Bool_t GetRICHhole() const = 0;
68
0a29d0f1 69 virtual Int_t GetDetectorSec(const Int_t p, const Int_t c) const;
a2b90f83 70 virtual Int_t GetDetector(const Int_t p, const Int_t c, const Int_t s) const;
71 virtual Int_t GetPlane(const Int_t d) const;
72 virtual Int_t GetChamber(const Int_t d) const;
73 virtual Int_t GetSector(const Int_t d) const;
793ff80c 74
0a770ac9 75 Float_t GetChamberWidth(const Int_t p) const { return fCwidth[p]; };
76 Float_t GetChamberLength(const Int_t p, const Int_t c) const { return fClength[p][c]; };
77
5443e65e 78 virtual void GetGlobal(const AliRecPoint *p, TVector3 &pos, TMatrix &mat) const { };
79 virtual void GetGlobal(const AliRecPoint *p, TVector3 &pos) const { };
80
a2b90f83 81 static Double_t GetAlpha() { return 2 * 3.14159265358979323846 / fgkNsect; };
f7336fa3 82
793ff80c 83 protected:
f7336fa3 84
793ff80c 85 static const Int_t fgkNsect; // Number of sectors in the full detector (18)
86 static const Int_t fgkNplan; // Number of planes of the TRD (6)
87 static const Int_t fgkNcham; // Number of chambers in z-direction (5)
88 static const Int_t fgkNdet; // Total number of detectors (18 * 6 * 5 = 540)
89
90 static const Float_t fgkRmin; // Minimal radius of the TRD
91 static const Float_t fgkRmax; // Maximal radius of the TRD
92
93 static const Float_t fgkZmax1; // Half-length of the TRD at outer radius
94 static const Float_t fgkZmax2; // Half-length of the TRD at inner radius
95
96 static const Float_t fgkSheight; // Height of the TRD-volume in spaceframe (BTR1-3)
97 static const Float_t fgkSwidth1; // Lower width of the TRD-volume in spaceframe (BTR1-3)
98 static const Float_t fgkSwidth2; // Upper width of the TRD-volume in spaceframe (BTR1-3)
99 static const Float_t fgkSlenTR1; // Length of the TRD-volume in spaceframe (BTR1)
100 static const Float_t fgkSlenTR2; // Length of the TRD-volume in spaceframe (BTR2)
101 static const Float_t fgkSlenTR3; // Length of the TRD-volume in spaceframe (BTR3)
102
0a770ac9 103 static const Float_t fgkCraH; // Height of the radiator part of the chambers
104 static const Float_t fgkCdrH; // Height of the drift region of the chambers
105 static const Float_t fgkCamH; // Height of the amplification region of the chambers
106 static const Float_t fgkCroH; // Height of the readout of the chambers
107 static const Float_t fgkCH; // Total height of the chambers
108
109 static const Float_t fgkVspace; // Vertical spacing of the chambers
110 static const Float_t fgkHspace; // Horizontal spacing of the chambers
111
112 static const Float_t fgkCalT; // Thickness of the lower aluminum frame
113 static const Float_t fgkCclsT; // Thickness of the lower G10 frame sides
114 static const Float_t fgkCclfT; // Thickness of the lower G10 frame front
115 static const Float_t fgkCcuT; // Thickness of the upper G10 frame
116 static const Float_t fgkCauT; // Thickness of the upper aluminum frame
117
118 static const Float_t fgkCroW; // Additional width of the readout chamber frames
119
120 static const Float_t fgkCpadW; // Difference of outer chamber width and pad plane width
121 static const Float_t fgkRpadW; // Difference of outer chamber width and pad plane width
793ff80c 122
793ff80c 123 static const Float_t fgkRaThick; // Thickness of the radiator
793ff80c 124 static const Float_t fgkMyThick; // Thickness of the mylar-layer
125 static const Float_t fgkXeThick; // Thickness of the gas volume
126 static const Float_t fgkDrThick; // Thickness of the drift region
127 static const Float_t fgkAmThick; // Thickness of the amplification region
128 static const Float_t fgkCuThick; // Thickness of the pad plane
129 static const Float_t fgkSuThick; // Thickness of the HEXCEL+G10 support structure
130 static const Float_t fgkFeThick; // Thickness of the FEE + signal lines
131 static const Float_t fgkCoThick; // Thickness of the PE of the cooling device
132 static const Float_t fgkWaThick; // Thickness of the cooling water
133
793ff80c 134 static const Float_t fgkRaZpos; // Position of the radiator
793ff80c 135 static const Float_t fgkMyZpos; // Position of the mylar-layer
136 static const Float_t fgkDrZpos; // Position of the drift region
137 static const Float_t fgkAmZpos; // Position of the amplification region
138 static const Float_t fgkCuZpos; // Position of the pad plane
139 static const Float_t fgkSuZpos; // Position of the HEXCEL+G10 support structure
140 static const Float_t fgkFeZpos; // Position of the FEE + signal lines
141 static const Float_t fgkCoZpos; // Position of the PE of the cooling device
142 static const Float_t fgkWaZpos; // Position of the colling water
143
0a770ac9 144 Float_t fCwidth[kNplan]; // Outer widths of the chambers
145 Float_t fClength[kNplan][kNcham]; // Outer lengths of the chambers
146 Float_t fClengthPH[kNplan][kNcham]; // For sectors with holes for the PHOS
147 Float_t fClengthRH[kNplan][kNcham]; // For sectors with holes for the RICH
793ff80c 148
793ff80c 149 Float_t fRotA11[kNsect]; // Matrix elements for the rotation
150 Float_t fRotA12[kNsect]; // Matrix elements for the rotation
151 Float_t fRotA21[kNsect]; // Matrix elements for the rotation
152 Float_t fRotA22[kNsect]; // Matrix elements for the rotation
153
154 Float_t fRotB11[kNsect]; // Matrix elements for the backward rotation
155 Float_t fRotB12[kNsect]; // Matrix elements for the backward rotation
156 Float_t fRotB21[kNsect]; // Matrix elements for the backward rotation
157 Float_t fRotB22[kNsect]; // Matrix elements for the backward rotation
158
5443e65e 159 ClassDef(AliTRDgeometry,5) // TRD geometry base class
f7336fa3 160
161};
162
163#endif