New TRD version now inserted in the space frame
[u/mrichter/AliRoot.git] / TRD / AliTRDconst.h
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82bbf98a 1//
2// Parameter for the TRD
3//
4
5//_____________________________________________________________________________
6// Geometry parameter
7
8const Int_t kNsect = 18; // Number of sectors in the full detector
9const Int_t kNplan = 6; // Number of planes of the TRD
10
11const Float_t kRmin = 294.0; // r-dimensions of the TRD
12const Float_t kRmax = 368.0;
13
14const Float_t kZmax1 = 378.35; // z-dimensions of the TRD
15const Float_t kZmax2 = 302.0;
16
17const Float_t kSheight = 74.0; // Height of the TRD-volume in spaceframe
18const Float_t kSwidth1 = 103.674; // Lower width of the TRD-volume in spaceframe
19const Float_t kSwidth2 = 129.768; // Upper width of the TRD-volume in spaceframe
20const Float_t kSlength = 751.0; // Length of the TRD-volume in spaceframe
21
22const Float_t kCheight = 11.0; // Height of the chambers
23const Float_t kCspace = 1.6; // Vertical spacing of the chambers
24const Float_t kCaframe = 2.675; // Height of the aluminum frame
25const Float_t kCathick = 1.0; // Thickness of the aluminum frame
26const Float_t kCcthick = 1.0; // Thickness of the carbon frame
27
28const Float_t kCwidcha = (kSwidth2 - kSwidth1) / kSheight * (kCheight + kCspace);
29const Float_t kCcframe = kCheight - kCaframe;
30
31// Thicknesses of the the material layers
32const Float_t kSeThick = 0.02; // Radiator seal
33const Float_t kRaThick = 4.8; // Radiator
34const Float_t kPeThick = 0.20; // PE-layer in the radiator
35const Float_t kMyThick = 0.005; // Mylar-layer
36const Float_t kXeThick = 3.5; // Gas mixture
37const Float_t kDrThick = 3.0; // Drift region
38const Float_t kAmThick = kXeThick - kDrThick; // Amplification region
39
40const Float_t kCuThick = 0.001; // Pad plane
41const Float_t kSuThick = 0.06; // HEXCEL+G10 support structure (= 0.31% X0)
42const Float_t kFeThick = 0.0044; // FEE + signal lines (= 0.31% X0)
43const Float_t kCoThick = 0.02; // PE of the cooling device
44const Float_t kWaThick = 0.01; // Cooling water
45
46// Position of the material layers
47const Float_t kSeZpos = -4.1525; // Radiator seal
48const Float_t kRaZpos = -1.7425; // Radiator
49const Float_t kPeZpos = 0.0000; // PE-layer in the radiator
50const Float_t kMyZpos = 0.6600; // Mylar-layer
51const Float_t kDrZpos = 2.1625; // Drift region
52const Float_t kAmZpos = 4.1125; // Amplification region
53
54const Float_t kCuZpos = -1.3370; // Pad plane
55const Float_t kSuZpos = 0.0000; // Support structure
56const Float_t kFeZpos = 1.3053; // FEE + signal lines
57const Float_t kCoZpos = 1.3175; // PE of the cooling device
58const Float_t kWaZpos = 1.3325; // Cooling Water
59
60//_____________________________________________________________________________