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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 | ||
16 | /* | |
17 | $Log$ | |
9d0b222b | 18 | Revision 1.14 2000/02/28 19:10:26 cblume |
19 | Include the new TRD classes | |
20 | ||
851d3db9 | 21 | Revision 1.13.4.1 2000/02/28 18:01:53 cblume |
22 | Change to new hit version and introduce geometry class | |
23 | ||
24 | Revision 1.13 1999/11/05 22:50:28 fca | |
25 | Do not use Atan, removed from ROOT too | |
26 | ||
90f8d287 | 27 | Revision 1.12 1999/11/02 16:35:56 fca |
28 | New version of TRD introduced | |
29 | ||
5c7f4665 | 30 | Revision 1.11 1999/11/01 20:41:51 fca |
31 | Added protections against using the wrong version of FRAME | |
32 | ||
ab76897d | 33 | Revision 1.10 1999/09/29 09:24:35 fca |
34 | Introduction of the Copyright and cvs Log | |
35 | ||
4c039060 | 36 | */ |
37 | ||
fe4da5cc | 38 | /////////////////////////////////////////////////////////////////////////////// |
39 | // // | |
5c7f4665 | 40 | // Transition Radiation Detector version 0 -- fast simulator // |
fe4da5cc | 41 | // // |
42 | //Begin_Html | |
43 | /* | |
5c7f4665 | 44 | <img src="picts/AliTRDfullClass.gif"> |
fe4da5cc | 45 | */ |
46 | //End_Html | |
47 | // // | |
48 | // // | |
49 | /////////////////////////////////////////////////////////////////////////////// | |
50 | ||
51 | #include <TMath.h> | |
52 | #include <TRandom.h> | |
53 | #include <TVector.h> | |
fe4da5cc | 54 | |
fe4da5cc | 55 | #include "AliRun.h" |
56 | #include "AliMC.h" | |
57 | #include "AliConst.h" | |
58 | ||
851d3db9 | 59 | #include "AliTRDv0.h" |
60 | #include "AliTRDgeometry.h" | |
fe4da5cc | 61 | |
851d3db9 | 62 | ClassImp(AliTRDv0) |
63 | ||
fe4da5cc | 64 | //_____________________________________________________________________________ |
65 | AliTRDv0::AliTRDv0(const char *name, const char *title) | |
66 | :AliTRD(name, title) | |
67 | { | |
68 | // | |
69 | // Standard constructor for Transition Radiation Detector version 0 | |
70 | // | |
82bbf98a | 71 | |
72 | fIdSens = 0; | |
73 | fHitsOn = 0; | |
74 | ||
82bbf98a | 75 | fIdChamber1 = 0; |
76 | fIdChamber2 = 0; | |
77 | fIdChamber3 = 0; | |
78 | ||
fe4da5cc | 79 | } |
851d3db9 | 80 | |
fe4da5cc | 81 | //_____________________________________________________________________________ |
82 | void AliTRDv0::CreateGeometry() | |
83 | { | |
84 | // | |
82bbf98a | 85 | // Create the GEANT geometry for the Transition Radiation Detector - Version 0 |
86 | // This version covers the full azimuth. | |
d3f347ff | 87 | // |
d3f347ff | 88 | |
82bbf98a | 89 | // Check that FRAME is there otherwise we have no place where to put the TRD |
90 | AliModule* FRAME = gAlice->GetModule("FRAME"); | |
91 | if (!FRAME) return; | |
fe4da5cc | 92 | |
82bbf98a | 93 | // Define the chambers |
94 | AliTRD::CreateGeometry(); | |
fe4da5cc | 95 | |
fe4da5cc | 96 | } |
97 | ||
98 | //_____________________________________________________________________________ | |
99 | void AliTRDv0::CreateMaterials() | |
100 | { | |
101 | // | |
102 | // Create materials for the Transition Radiation Detector | |
103 | // | |
82bbf98a | 104 | |
fe4da5cc | 105 | AliTRD::CreateMaterials(); |
82bbf98a | 106 | |
fe4da5cc | 107 | } |
108 | ||
109 | //_____________________________________________________________________________ | |
110 | void AliTRDv0::Init() | |
111 | { | |
112 | // | |
851d3db9 | 113 | // Initialize Transition Radiation Detector after geometry is built |
fe4da5cc | 114 | // |
82bbf98a | 115 | |
fe4da5cc | 116 | AliTRD::Init(); |
82bbf98a | 117 | |
82bbf98a | 118 | // Identifier of the sensitive volume (amplification region) |
119 | fIdSens = gMC->VolId("UL06"); | |
120 | ||
82bbf98a | 121 | // Identifier of the TRD-driftchambers |
122 | fIdChamber1 = gMC->VolId("UCIO"); | |
123 | fIdChamber2 = gMC->VolId("UCIM"); | |
124 | fIdChamber3 = gMC->VolId("UCII"); | |
125 | ||
851d3db9 | 126 | printf(" Fast simulator\n\n"); |
5c7f4665 | 127 | for (Int_t i = 0; i < 80; i++) printf("*"); |
128 | printf("\n"); | |
129 | ||
fe4da5cc | 130 | } |
131 | ||
132 | //_____________________________________________________________________________ | |
133 | void AliTRDv0::StepManager() | |
134 | { | |
135 | // | |
136 | // Procedure called at every step in the TRD | |
82bbf98a | 137 | // Fast simulator. If switched on, a hit is produced when a track |
138 | // crosses the border between amplification region and pad plane. | |
fe4da5cc | 139 | // |
140 | ||
851d3db9 | 141 | Int_t pla = 0; |
142 | Int_t cha = 0; | |
143 | Int_t sec = 0; | |
82bbf98a | 144 | Int_t iIdSens, icSens; |
82bbf98a | 145 | Int_t iIdChamber, icChamber; |
146 | ||
82bbf98a | 147 | Float_t hits[4]; |
9d0b222b | 148 | Int_t det[1]; |
fe4da5cc | 149 | |
0a6d8768 | 150 | TLorentzVector p; |
82bbf98a | 151 | TClonesArray &lhits = *fHits; |
fe4da5cc | 152 | |
82bbf98a | 153 | // Writing out hits enabled? |
154 | if (!(fHitsOn)) return; | |
fe4da5cc | 155 | |
fe4da5cc | 156 | // Use only charged tracks and count them only once per volume |
82bbf98a | 157 | if (gMC->TrackCharge() && |
158 | gMC->IsTrackExiting()) { | |
fe4da5cc | 159 | |
160 | // Check on sensitive volume | |
82bbf98a | 161 | iIdSens = gMC->CurrentVolID(icSens); |
162 | if (iIdSens == fIdSens) { | |
163 | ||
164 | gMC->TrackPosition(p); | |
165 | for (Int_t i = 0; i < 3; i++) hits[i] = p[i]; | |
166 | // No charge created | |
167 | hits[3] = 0; | |
168 | ||
851d3db9 | 169 | // The sector number (0 - 17) |
170 | // The numbering goes clockwise and starts at y = 0 | |
171 | Float_t phi = kRaddeg*TMath::ATan2(hits[0],hits[1]); | |
172 | if (phi < 90.) | |
173 | phi = phi + 270.; | |
174 | else | |
175 | phi = phi - 90.; | |
176 | sec = ((Int_t) (phi / 20)); | |
82bbf98a | 177 | |
d3f347ff | 178 | // The chamber number |
851d3db9 | 179 | // 0: outer left |
180 | // 1: middle left | |
181 | // 2: inner | |
182 | // 3: middle right | |
183 | // 4: outer right | |
5c7f4665 | 184 | iIdChamber = gMC->CurrentVolOffID(1,icChamber); |
82bbf98a | 185 | if (iIdChamber == fIdChamber1) |
851d3db9 | 186 | cha = (hits[2] < 0 ? 0 : 4); |
82bbf98a | 187 | else if (iIdChamber == fIdChamber2) |
851d3db9 | 188 | cha = (hits[2] < 0 ? 1 : 3); |
82bbf98a | 189 | else if (iIdChamber == fIdChamber3) |
851d3db9 | 190 | cha = 2; |
82bbf98a | 191 | |
851d3db9 | 192 | // The plane number (0 - 5) |
193 | pla = icChamber - TMath::Nint((Float_t) (icChamber / 7)) * 6 - 1; | |
82bbf98a | 194 | |
9d0b222b | 195 | det[0] = fGeometry->GetDetector(pla,cha,sec); |
851d3db9 | 196 | new(lhits[fNhits++]) AliTRDhit(fIshunt |
197 | ,gAlice->CurrentTrack() | |
9d0b222b | 198 | ,det |
851d3db9 | 199 | ,hits); |
d3f347ff | 200 | |
fe4da5cc | 201 | } |
d3f347ff | 202 | |
fe4da5cc | 203 | } |
d3f347ff | 204 | |
fe4da5cc | 205 | } |