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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
f7336fa3 16class AliTRDgeometry : public AliGeometry {
17
18 public:
19
dd56b762 20 enum { kNplan = 6, kNcham = 5, kNsect = 18, kNdet = 540 };
21
f7336fa3 22 AliTRDgeometry();
8230f242 23 virtual ~AliTRDgeometry();
f7336fa3 24
cbba4394 25 virtual void CreateGeometry(Int_t *idtmed);
793ff80c 26 virtual Int_t IsVersion() const = 0;
27 virtual void Init();
28 virtual Bool_t Local2Global(Int_t d, Float_t *local, Float_t *global) const;
29 virtual Bool_t Local2Global(Int_t p, Int_t c, Int_t s, Float_t *local, Float_t *global) const;
30 virtual Bool_t Rotate(Int_t d, Float_t *pos, Float_t *rot) const;
31 virtual Bool_t RotateBack(Int_t d, Float_t *rot, Float_t *pos) const;
32
33 static Int_t Nsect() { return fgkNsect; };
34 static Int_t Nplan() { return fgkNplan; };
35 static Int_t Ncham() { return fgkNcham; };
36 static Int_t Ndet() { return fgkNdet; };
37
38 static Float_t Rmin() { return fgkRmin; };
39 static Float_t Rmax() { return fgkRmax; };
40 static Float_t Zmax1() { return fgkZmax1; };
41 static Float_t Zmax2() { return fgkZmax2; };
42
43 static Float_t Cwidcha() { return (fgkSwidth2 - fgkSwidth1)
0a770ac9 44 / fgkSheight * (fgkCH + fgkVspace); };
45 static Float_t Cheight() { return fgkCH; };
46 static Float_t Cspace() { return fgkVspace; };
47 static Float_t CraHght() { return fgkCraH; };
48 static Float_t CdrHght() { return fgkCdrH; };
49 static Float_t CamHght() { return fgkCamH; };
50 static Float_t CroHght() { return fgkCroH; };
793ff80c 51 static Float_t MyThick() { return fgkMyThick; };
52 static Float_t DrThick() { return fgkDrThick; };
a2b90f83 53 static Float_t AmThick() { return fgkAmThick; };
a2b90f83 54 static Float_t DrZpos() { return fgkDrZpos; };
17b26de4 55 static Float_t RpadW() { return fgkRpadW; };
56 static Float_t CpadW() { return fgkCpadW; };
793ff80c 57
58 virtual void SetPHOShole() = 0;
59 virtual void SetRICHhole() = 0;
60
0a770ac9 61 virtual void SetNRowPad();
62 virtual void SetNRowPad(const Int_t p, const Int_t c, const Int_t npad);
63 virtual void SetColPadSize(const Int_t p, const Float_t s);
a2b90f83 64 virtual void SetNTimeBin(const Int_t nbin);
65 virtual void SetExpandTimeBin(const Int_t nbefore, const Int_t nafter)
66 { fTimeBefore = nbefore;
67 fTimeAfter = nafter; };
793ff80c 68
69 virtual Bool_t GetPHOShole() const = 0;
70 virtual Bool_t GetRICHhole() const = 0;
71
0a29d0f1 72 virtual Int_t GetDetectorSec(const Int_t p, const Int_t c) const;
a2b90f83 73 virtual Int_t GetDetector(const Int_t p, const Int_t c, const Int_t s) const;
74 virtual Int_t GetPlane(const Int_t d) const;
75 virtual Int_t GetChamber(const Int_t d) const;
76 virtual Int_t GetSector(const Int_t d) const;
793ff80c 77
0a770ac9 78 Float_t GetChamberWidth(const Int_t p) const { return fCwidth[p]; };
79 Float_t GetChamberLength(const Int_t p, const Int_t c) const { return fClength[p][c]; };
80
793ff80c 81
a2b90f83 82 Int_t GetRowMax(const Int_t p, const Int_t c, const Int_t s)
83 const { return fRowMax[p][c][s]; };
84 Int_t GetColMax(const Int_t p) const { return fColMax[p]; };
85 Int_t GetTimeMax() const { return fTimeMax; };
86 Int_t GetTimeBefore() const { return fTimeBefore; };
87 Int_t GetTimeAfter() const { return fTimeAfter; };
88 Int_t GetTimeTotal() const { return fTimeMax
89 + fTimeBefore
90 + fTimeAfter; };
91
92 Float_t GetRow0(const Int_t p, const Int_t c, const Int_t s)
93 const { return fRow0[p][c][s]; };
94 Float_t GetCol0(const Int_t p) const { return fCol0[p]; };
95 Float_t GetTime0(const Int_t p) const { return fTime0[p]; };
96
97 Float_t GetRowPadSize(const Int_t p, const Int_t c, const Int_t s)
98 const { return fRowPadSize[p][c][s]; };
99 Float_t GetColPadSize(const Int_t p) const { return fColPadSize[p]; };
100 Float_t GetTimeBinSize() const { return fTimeBinSize; };
f7336fa3 101
793ff80c 102 virtual void GetGlobal(const AliRecPoint *p, TVector3 &pos, TMatrix &mat) const;
103 virtual void GetGlobal(const AliRecPoint *p, TVector3 &pos) const;
f7336fa3 104
a2b90f83 105 static Double_t GetAlpha() { return 2 * 3.14159265358979323846 / fgkNsect; };
f7336fa3 106
793ff80c 107 protected:
f7336fa3 108
793ff80c 109 static const Int_t fgkNsect; // Number of sectors in the full detector (18)
110 static const Int_t fgkNplan; // Number of planes of the TRD (6)
111 static const Int_t fgkNcham; // Number of chambers in z-direction (5)
112 static const Int_t fgkNdet; // Total number of detectors (18 * 6 * 5 = 540)
113
114 static const Float_t fgkRmin; // Minimal radius of the TRD
115 static const Float_t fgkRmax; // Maximal radius of the TRD
116
117 static const Float_t fgkZmax1; // Half-length of the TRD at outer radius
118 static const Float_t fgkZmax2; // Half-length of the TRD at inner radius
119
120 static const Float_t fgkSheight; // Height of the TRD-volume in spaceframe (BTR1-3)
121 static const Float_t fgkSwidth1; // Lower width of the TRD-volume in spaceframe (BTR1-3)
122 static const Float_t fgkSwidth2; // Upper width of the TRD-volume in spaceframe (BTR1-3)
123 static const Float_t fgkSlenTR1; // Length of the TRD-volume in spaceframe (BTR1)
124 static const Float_t fgkSlenTR2; // Length of the TRD-volume in spaceframe (BTR2)
125 static const Float_t fgkSlenTR3; // Length of the TRD-volume in spaceframe (BTR3)
126
0a770ac9 127 static const Float_t fgkCraH; // Height of the radiator part of the chambers
128 static const Float_t fgkCdrH; // Height of the drift region of the chambers
129 static const Float_t fgkCamH; // Height of the amplification region of the chambers
130 static const Float_t fgkCroH; // Height of the readout of the chambers
131 static const Float_t fgkCH; // Total height of the chambers
132
133 static const Float_t fgkVspace; // Vertical spacing of the chambers
134 static const Float_t fgkHspace; // Horizontal spacing of the chambers
135
136 static const Float_t fgkCalT; // Thickness of the lower aluminum frame
137 static const Float_t fgkCclsT; // Thickness of the lower G10 frame sides
138 static const Float_t fgkCclfT; // Thickness of the lower G10 frame front
139 static const Float_t fgkCcuT; // Thickness of the upper G10 frame
140 static const Float_t fgkCauT; // Thickness of the upper aluminum frame
141
142 static const Float_t fgkCroW; // Additional width of the readout chamber frames
143
144 static const Float_t fgkCpadW; // Difference of outer chamber width and pad plane width
145 static const Float_t fgkRpadW; // Difference of outer chamber width and pad plane width
793ff80c 146
793ff80c 147 static const Float_t fgkRaThick; // Thickness of the radiator
793ff80c 148 static const Float_t fgkMyThick; // Thickness of the mylar-layer
149 static const Float_t fgkXeThick; // Thickness of the gas volume
150 static const Float_t fgkDrThick; // Thickness of the drift region
151 static const Float_t fgkAmThick; // Thickness of the amplification region
152 static const Float_t fgkCuThick; // Thickness of the pad plane
153 static const Float_t fgkSuThick; // Thickness of the HEXCEL+G10 support structure
154 static const Float_t fgkFeThick; // Thickness of the FEE + signal lines
155 static const Float_t fgkCoThick; // Thickness of the PE of the cooling device
156 static const Float_t fgkWaThick; // Thickness of the cooling water
157
793ff80c 158 static const Float_t fgkRaZpos; // Position of the radiator
793ff80c 159 static const Float_t fgkMyZpos; // Position of the mylar-layer
160 static const Float_t fgkDrZpos; // Position of the drift region
161 static const Float_t fgkAmZpos; // Position of the amplification region
162 static const Float_t fgkCuZpos; // Position of the pad plane
163 static const Float_t fgkSuZpos; // Position of the HEXCEL+G10 support structure
164 static const Float_t fgkFeZpos; // Position of the FEE + signal lines
165 static const Float_t fgkCoZpos; // Position of the PE of the cooling device
166 static const Float_t fgkWaZpos; // Position of the colling water
167
168 Int_t fRowMax[kNplan][kNcham][kNsect]; // Number of pad-rows
169 Int_t fColMax[kNplan]; // Number of pad-columns
a2b90f83 170 Int_t fTimeMax; // Number of timebins in the drift region
171 Int_t fTimeBefore; // Number of timebins before the drift region
172 Int_t fTimeAfter; // Number of timebins after the drift region
793ff80c 173
0a770ac9 174 Float_t fCwidth[kNplan]; // Outer widths of the chambers
175 Float_t fClength[kNplan][kNcham]; // Outer lengths of the chambers
176 Float_t fClengthPH[kNplan][kNcham]; // For sectors with holes for the PHOS
177 Float_t fClengthRH[kNplan][kNcham]; // For sectors with holes for the RICH
793ff80c 178
179 Float_t fRow0[kNplan][kNcham][kNsect]; // Row-position of pad 0
180 Float_t fCol0[kNplan]; // Column-position of pad 0
181 Float_t fTime0[kNplan]; // Time-position of pad 0
182
71d9fa7b 183 Float_t fRowPadSize[kNplan][kNcham][kNsect]; // Pad size in z-direction
184 Float_t fColPadSize[kNplan]; // Pad size in rphi-direction
793ff80c 185 Float_t fTimeBinSize; // Size of the time buckets
186
187 Float_t fRotA11[kNsect]; // Matrix elements for the rotation
188 Float_t fRotA12[kNsect]; // Matrix elements for the rotation
189 Float_t fRotA21[kNsect]; // Matrix elements for the rotation
190 Float_t fRotA22[kNsect]; // Matrix elements for the rotation
191
192 Float_t fRotB11[kNsect]; // Matrix elements for the backward rotation
193 Float_t fRotB12[kNsect]; // Matrix elements for the backward rotation
194 Float_t fRotB21[kNsect]; // Matrix elements for the backward rotation
195 Float_t fRotB22[kNsect]; // Matrix elements for the backward rotation
196
0a770ac9 197 ClassDef(AliTRDgeometry,4) // TRD geometry base class
f7336fa3 198
199};
200
201#endif