New TRD files from C.Blume.
[u/mrichter/AliRoot.git] / TRD / AliTRD.h
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fe4da5cc 1#ifndef TRD_H
2#define TRD_H
3////////////////////////////////////////////////
d3f347ff 4// Manager and hits classes for set: TRD //
fe4da5cc 5////////////////////////////////////////////////
6
7#include "AliDetector.h"
8#include "AliHit.h"
9
10class AliTRD : public AliDetector {
11
d3f347ff 12protected:
13
14 Int_t fGasMix; // Gas mixture. 0: Xe/Isobutane 1: Xe/CO2
15 Int_t fSensSelect; // Switch to select only parts of the detector
16 Int_t fSensPlane; // Sensitive detector plane
17 Int_t fSensChamber; // Sensitive detector chamber
18 Int_t fSensSector; // Sensitive detector sector
19
fe4da5cc 20public:
21 AliTRD();
22 AliTRD(const char *name, const char *title);
23 virtual ~AliTRD() {}
24 virtual void AddHit(Int_t, Int_t*, Float_t*);
25 virtual void BuildGeometry();
fe4da5cc 26 virtual void CreateMaterials();
27 Int_t DistancetoPrimitive(Int_t px, Int_t py);
28 virtual void Init();
29 virtual Int_t IsVersion() const =0;
30 virtual void StepManager()=0;
d3f347ff 31 virtual void SetGasMix(Int_t imix = 0);
32 virtual void SetSensPlane(Int_t iplane = 0);
33 virtual void SetSensChamber(Int_t ichamber = 0);
34 virtual void SetSensSector(Int_t isector = 0);
35
36 ClassDef(AliTRD,1) // Transition Radiation Detector base class
fe4da5cc 37};
38
d3f347ff 39////////////////////////////////////////////////
40// Geometry parameter
41////////////////////////////////////////////////
42
43const Int_t nsect = 18; // Number of sectors in the full detector
44const Int_t nmodul = 6; // Number of modules in each sector
45const Int_t ncham = 6; // Number of different chambers
46const Int_t narmsec = 5; // Number of sectors in one arm (geometry 1)
47
48const Float_t rmin = 294.0; // r-dimensions of the TRD-frame
49const Float_t rmax = 368.0;
50
51const Float_t zmax1 = 378.35; // z-dimensions of the TRD-frame
52const Float_t zmax2 = 302.0;
53
54const Float_t zleni = 110.0; // z-dimension of the inner chamber
55const Float_t zlenn = 156.0; // z-dimension of the neighbouring chambers
56const Float_t zleno = 156.0; // z-dimension of the outer chambers
57
58const Float_t widpl1 = 99.6; // rphi-dimension of the innermost plane
59
60const Float_t alframe = 1.0; // Thickness of the aluminium of the support frame
fe4da5cc 61
d3f347ff 62const Float_t ccframe = 1.0; // Thickness of the carbon chamber frame
63
64// Thicknesses of the the material layers
65const Float_t sethick = 0.02; // Radiator seal
66const Float_t rathick = 4.2; // Radiator
67const Float_t pethick = 0.20; // PE-layer in the radiator
68const Float_t mythick = 0.005; // Mylar-layer
69const Float_t xethick = 3.5; // Gas mixture
70const Float_t cuthick = 0.001; // Pad plane
71const Float_t suthick = 0.06; // HEXCEL+G10 support structure (= 0.31% X0)
72const Float_t fethick = 0.0044; // FEE + signal lines (= 0.31% X0)
73const Float_t cothick = 0.02; // PE of the cooling device
74const Float_t wathick = 0.01; // Cooling water
75
76// Position of the material layers
77const Float_t sezpos = -5.657; // Radiator seal
78const Float_t razpos = -3.557; // Radiator
79const Float_t pezpos = 0.0; // PE-layer in the radiator
80const Float_t myzpos = -1.4545; // Mylar-layer
81const Float_t xezpos = 0.298; // Gas mixture
82const Float_t cuzpos = 2.047; // Pad plane
83const Float_t suzpos = 3.046; // HEXCEL+G10 support structure
84const Float_t fezpos = 4.0482; // FEE + signal lines
85const Float_t cozpos = 4.1504; // PE of the cooling devices
86const Float_t wazpos = 4.3004; // Cooling water
87
88////////////////////////////////////////////////
89// Parameter for the energy loss calculation
90////////////////////////////////////////////////
91
92const Float_t kPoti = 12.1; // First ionization potential (eV)
93const Float_t kEend = 50000.0; // Maximum energy (50 keV);
94
fe4da5cc 95//_____________________________________________________________________________
96class AliTRDhit : public AliHit {
97
98public:
99 Int_t fSector; // TRD sector number
100 Int_t fChamber; // TRD chamber number
101 Int_t fPlane; // TRD plane number
102 Float_t fQ; // Charge created by a hit (geometry 2)
103
104public:
105 AliTRDhit() {}
106 AliTRDhit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits);
107 virtual ~AliTRDhit() {}
108
109 ClassDef(AliTRDhit,1) // Hits for Transition Radiation Detector
110};
111
112#endif