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4c039060 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
88cb7938 | 16 | /* $Id$ */ |
4c039060 | 17 | |
fe4da5cc | 18 | /////////////////////////////////////////////////////////////////////////////// |
19 | // // | |
5c7f4665 | 20 | // Transition Radiation Detector version 0 -- fast simulator // |
fe4da5cc | 21 | // // |
fe4da5cc | 22 | /////////////////////////////////////////////////////////////////////////////// |
23 | ||
332e9569 | 24 | #include <stdlib.h> |
25 | ||
88cb7938 | 26 | #include <TLorentzVector.h> |
fe4da5cc | 27 | #include <TMath.h> |
28 | #include <TRandom.h> | |
1819f4bb | 29 | #include <TVector.h> |
88cb7938 | 30 | #include <TVirtualMC.h> |
fe4da5cc | 31 | |
fe4da5cc | 32 | #include "AliConst.h" |
88cb7938 | 33 | #include "AliRun.h" |
030b4415 | 34 | #include "AliMC.h" |
35 | ||
851d3db9 | 36 | #include "AliTRDgeometry.h" |
88cb7938 | 37 | #include "AliTRDhit.h" |
38 | #include "AliTRDv0.h" | |
fe4da5cc | 39 | |
851d3db9 | 40 | ClassImp(AliTRDv0) |
8230f242 | 41 | |
42 | //_____________________________________________________________________________ | |
030b4415 | 43 | AliTRDv0::AliTRDv0() |
44 | :AliTRD() | |
45 | ,fHitsOn(0) | |
8230f242 | 46 | { |
47 | // | |
48 | // AliTRDv0 default constructor | |
49 | // | |
50 | ||
8230f242 | 51 | } |
52 | ||
fe4da5cc | 53 | //_____________________________________________________________________________ |
54 | AliTRDv0::AliTRDv0(const char *name, const char *title) | |
030b4415 | 55 | :AliTRD(name,title) |
56 | ,fHitsOn(0) | |
fe4da5cc | 57 | { |
58 | // | |
59 | // Standard constructor for Transition Radiation Detector version 0 | |
60 | // | |
82bbf98a | 61 | |
fe4da5cc | 62 | } |
851d3db9 | 63 | |
8230f242 | 64 | //_____________________________________________________________________________ |
65 | AliTRDv0::~AliTRDv0() | |
66 | { | |
67 | // | |
68 | // AliTRDv0 destructor | |
69 | // | |
70 | ||
71 | } | |
72 | ||
fe4da5cc | 73 | //_____________________________________________________________________________ |
74 | void AliTRDv0::CreateGeometry() | |
75 | { | |
76 | // | |
82bbf98a | 77 | // Create the GEANT geometry for the Transition Radiation Detector - Version 0 |
78 | // This version covers the full azimuth. | |
d3f347ff | 79 | // |
d3f347ff | 80 | |
82bbf98a | 81 | // Check that FRAME is there otherwise we have no place where to put the TRD |
8230f242 | 82 | AliModule* frame = gAlice->GetModule("FRAME"); |
030b4415 | 83 | if (!frame) { |
84 | AliError("TRD needs FRAME to be present\n"); | |
85 | return; | |
86 | } | |
fe4da5cc | 87 | |
82bbf98a | 88 | // Define the chambers |
89 | AliTRD::CreateGeometry(); | |
fe4da5cc | 90 | |
fe4da5cc | 91 | } |
92 | ||
93 | //_____________________________________________________________________________ | |
94 | void AliTRDv0::CreateMaterials() | |
95 | { | |
96 | // | |
97 | // Create materials for the Transition Radiation Detector | |
98 | // | |
82bbf98a | 99 | |
fe4da5cc | 100 | AliTRD::CreateMaterials(); |
82bbf98a | 101 | |
fe4da5cc | 102 | } |
103 | ||
104 | //_____________________________________________________________________________ | |
105 | void AliTRDv0::Init() | |
106 | { | |
107 | // | |
851d3db9 | 108 | // Initialize Transition Radiation Detector after geometry is built |
fe4da5cc | 109 | // |
82bbf98a | 110 | |
fe4da5cc | 111 | AliTRD::Init(); |
82bbf98a | 112 | |
030b4415 | 113 | AliDebug(1," Fast simulator\n\n"); |
114 | AliDebug(1,"++++++++++++++++++++++++++++++++++++++++++++++"); | |
5c7f4665 | 115 | |
fe4da5cc | 116 | } |
117 | ||
118 | //_____________________________________________________________________________ | |
119 | void AliTRDv0::StepManager() | |
120 | { | |
121 | // | |
122 | // Procedure called at every step in the TRD | |
82bbf98a | 123 | // Fast simulator. If switched on, a hit is produced when a track |
124 | // crosses the border between amplification region and pad plane. | |
fe4da5cc | 125 | // |
126 | ||
851d3db9 | 127 | Int_t pla = 0; |
128 | Int_t cha = 0; | |
129 | Int_t sec = 0; | |
82bbf98a | 130 | |
793ff80c | 131 | Float_t hits[3]; |
132 | Int_t det; | |
fe4da5cc | 133 | |
0a6d8768 | 134 | TLorentzVector p; |
332e9569 | 135 | |
136 | // Use pad plane as sensitive volume | |
137 | TString cIdSens = "L"; | |
138 | TString cIdCurrent; | |
593a9fc3 | 139 | Char_t cIdChamber[3]; |
140 | cIdChamber[2] = 0; | |
332e9569 | 141 | |
142 | const Int_t kNplan = AliTRDgeometry::Nplan(); | |
fe4da5cc | 143 | |
82bbf98a | 144 | // Writing out hits enabled? |
030b4415 | 145 | if (!(fHitsOn)) { |
146 | return; | |
147 | } | |
fe4da5cc | 148 | |
fe4da5cc | 149 | // Use only charged tracks and count them only once per volume |
82bbf98a | 150 | if (gMC->TrackCharge() && |
332e9569 | 151 | gMC->IsTrackEntering()) { |
fe4da5cc | 152 | |
153 | // Check on sensitive volume | |
332e9569 | 154 | cIdCurrent = gMC->CurrentVolName(); |
e6674585 | 155 | if (cIdSens == cIdCurrent[1]) { |
82bbf98a | 156 | |
157 | gMC->TrackPosition(p); | |
030b4415 | 158 | for (Int_t i = 0; i < 3; i++) { |
159 | hits[i] = p[i]; | |
160 | } | |
82bbf98a | 161 | |
851d3db9 | 162 | // The sector number (0 - 17) |
163 | // The numbering goes clockwise and starts at y = 0 | |
164 | Float_t phi = kRaddeg*TMath::ATan2(hits[0],hits[1]); | |
030b4415 | 165 | if (phi < 90.0) { |
166 | phi = phi + 270.0; | |
167 | } | |
168 | else { | |
169 | phi = phi - 90.0; | |
170 | } | |
171 | sec = ((Int_t) (phi / 20.0)); | |
82bbf98a | 172 | |
332e9569 | 173 | // The plane and chamber number |
030b4415 | 174 | cIdChamber[0] = cIdCurrent[2]; |
175 | cIdChamber[1] = cIdCurrent[3]; | |
332e9569 | 176 | Int_t idChamber = atoi(cIdChamber); |
177 | cha = ((Int_t) idChamber / kNplan); | |
178 | pla = ((Int_t) idChamber % kNplan); | |
793ff80c | 179 | det = fGeometry->GetDetector(pla,cha,sec); |
82bbf98a | 180 | |
5d12ce38 | 181 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),det,hits,0,kTRUE); |
d3f347ff | 182 | |
fe4da5cc | 183 | } |
d3f347ff | 184 | |
fe4da5cc | 185 | } |
d3f347ff | 186 | |
fe4da5cc | 187 | } |