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e118b27e | 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 | ||
d1cd2474 | 16 | // $Id$ |
17 | // | |
18 | // Class AliMUONSt1GeometryBuilder | |
19 | // ------------------------------- | |
20 | // MUON Station1 coarse geometry construction class. | |
d1cd2474 | 21 | // Extracted from AliMUONv1 |
22 | // by Ivana Hrivnacova, IPN Orsay | |
5f1df83a | 23 | // Included in AliRoot 2004/01/23 |
d1cd2474 | 24 | |
25 | #include <TVirtualMC.h> | |
26 | #include <TGeoMatrix.h> | |
27 | ||
e118b27e | 28 | #include "AliLog.h" |
29 | ||
d1cd2474 | 30 | #include "AliMUONSt1GeometryBuilder.h" |
31 | #include "AliMUON.h" | |
b7ef3c96 | 32 | #include "AliMUONConstants.h" |
e118b27e | 33 | #include "AliMUONGeometryModule.h" |
a432117a | 34 | #include "AliMUONGeometryEnvelopeStore.h" |
d1cd2474 | 35 | |
36 | ClassImp(AliMUONSt1GeometryBuilder) | |
37 | ||
38 | //______________________________________________________________________________ | |
39 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(AliMUON* muon) | |
b7ef3c96 | 40 | : AliMUONVGeometryBuilder(0, 1), |
d1cd2474 | 41 | fMUON(muon) |
42 | { | |
43 | // Standard constructor | |
44 | ||
45 | } | |
46 | ||
47 | //______________________________________________________________________________ | |
48 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder() | |
49 | : AliMUONVGeometryBuilder(), | |
50 | fMUON(0) | |
51 | { | |
52 | // Default constructor | |
53 | } | |
54 | ||
55 | ||
56 | //______________________________________________________________________________ | |
57 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(const AliMUONSt1GeometryBuilder& rhs) | |
58 | : AliMUONVGeometryBuilder(rhs) | |
59 | { | |
30178c30 | 60 | // Protected copy constructor |
61 | ||
8c343c7c | 62 | AliFatal("Copy constructor is not implemented."); |
d1cd2474 | 63 | } |
64 | ||
65 | //______________________________________________________________________________ | |
66 | AliMUONSt1GeometryBuilder::~AliMUONSt1GeometryBuilder() { | |
67 | // | |
68 | } | |
69 | ||
70 | //______________________________________________________________________________ | |
71 | AliMUONSt1GeometryBuilder& | |
72 | AliMUONSt1GeometryBuilder::operator = (const AliMUONSt1GeometryBuilder& rhs) | |
73 | { | |
30178c30 | 74 | // Protected assignement operator |
75 | ||
d1cd2474 | 76 | // check assignement to self |
77 | if (this == &rhs) return *this; | |
78 | ||
8c343c7c | 79 | AliFatal("Assignment operator is not implemented."); |
d1cd2474 | 80 | |
81 | return *this; | |
82 | } | |
83 | ||
84 | // | |
85 | // public methods | |
86 | // | |
87 | ||
88 | //______________________________________________________________________________ | |
89 | void AliMUONSt1GeometryBuilder::CreateGeometry() | |
90 | { | |
91 | // From AliMUONv1::CreateGeometry() | |
92 | // --- | |
93 | ||
94 | //******************************************************************** | |
95 | // Station 1 ** | |
96 | //******************************************************************** | |
97 | // CONCENTRIC | |
98 | // indices 1 and 2 for first and second chambers in the station | |
99 | // iChamber (first chamber) kept for other quanties than Z, | |
100 | // assumed to be the same in both chambers | |
101 | ||
102 | // Get tracking medias Ids | |
103 | Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099; | |
104 | Int_t idAir= idtmed[1100]; // medium 1 | |
105 | Int_t idAlu1=idtmed[1103]; // medium 4 | |
106 | Int_t idAlu2=idtmed[1104]; // medium 5 | |
107 | Int_t idGas=idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%) | |
108 | Bool_t frameCrosses=kTRUE; | |
109 | ||
110 | // Rotation matrices in the x-y plane | |
111 | // phi= 0 deg | |
112 | Int_t irot1; | |
113 | fMUON->AliMatrix(irot1, 90., 0., 90., 90., 0., 0.); | |
114 | // phi= 90 deg | |
115 | Int_t irot2; | |
116 | fMUON->AliMatrix(irot2, 90., 90., 90., 180., 0., 0.); | |
117 | ||
d1cd2474 | 118 | // DGas decreased from standard one (0.5) |
b7ef3c96 | 119 | const Float_t kDGas = 0.4; |
d1cd2474 | 120 | |
121 | // DAlu increased from standard one (3% of X0), | |
122 | // because more electronics with smaller pads | |
b7ef3c96 | 123 | const Float_t kDAlu = 3.5 * 8.9 / 100.; |
d1cd2474 | 124 | |
125 | // Half of the total thickness of frame crosses (including DAlu) | |
126 | // for each chamber in stations 1 and 2: | |
127 | // 3% of X0 of composite material, | |
128 | // but taken as Aluminium here, with same thickness in number of X0 | |
129 | Float_t dframez = 3. * 8.9 / 100; | |
b7ef3c96 | 130 | Float_t zfpos=-(kDGas+dframez+kDAlu)/2; |
d1cd2474 | 131 | // The same parameters are defined in builder for station 2 |
132 | ||
133 | // Mother volume | |
134 | // Outer excess and inner recess for mother volume radius | |
135 | // with respect to ROuter and RInner | |
136 | Float_t dframep=.001; // Value for station 3 should be 6 ... | |
137 | // Width (RdPhi) of the frame crosses for stations 1 and 2 (cm) | |
138 | // Float_t dframep1=.001; | |
139 | Float_t dframep1 = 11.0; | |
140 | Float_t phi=2*TMath::Pi()/12/2; | |
141 | // The same parameters are defined in builder for station 2 | |
142 | ||
143 | Float_t tpar[3]; | |
b7ef3c96 | 144 | Float_t dstation = (-AliMUONConstants::DefaultChamberZ(1)) - |
145 | (-AliMUONConstants::DefaultChamberZ(0)); | |
146 | tpar[0] = AliMUONConstants::Rmin(0)-dframep; | |
147 | tpar[1] = (AliMUONConstants::Rmax(0)+dframep)/TMath::Cos(phi); | |
d1cd2474 | 148 | tpar[2] = dstation/5; |
149 | ||
150 | gMC->Gsvolu("S01M", "TUBE", idAir, tpar, 3); | |
151 | gMC->Gsvolu("S02M", "TUBE", idAir, tpar, 3); | |
152 | ||
153 | // CHANGED | |
154 | //gMC->Gspos("S01M", 1, "ALIC", 0., 0., zpos1 , 0, "ONLY"); | |
a432117a | 155 | //gMC->Gspos("S02M", 1, "ALIC", 0., 0., zpos2 , 0, "ONLY"); |
156 | ||
157 | GetEnvelopes(0)->AddEnvelope("S01M", 100, false); | |
158 | GetEnvelopes(1)->AddEnvelope("S02M", 200, false); | |
159 | ||
d1cd2474 | 160 | |
161 | // // Aluminium frames | |
162 | // // Outer frames | |
163 | // pgpar[0] = 360/12/2; | |
164 | // pgpar[1] = 360.; | |
165 | // pgpar[2] = 12.; | |
166 | // pgpar[3] = 2; | |
167 | // pgpar[4] = -dframez/2; | |
b7ef3c96 | 168 | // pgpar[5] = AliMUONConstants::Rmax(0); |
d1cd2474 | 169 | // pgpar[6] = pgpar[5]+dframep1; |
170 | // pgpar[7] = +dframez/2; | |
171 | // pgpar[8] = pgpar[5]; | |
172 | // pgpar[9] = pgpar[6]; | |
173 | // gMC->Gsvolu("S01O", "PGON", idAlu1, pgpar, 10); | |
174 | // gMC->Gsvolu("S02O", "PGON", idAlu1, pgpar, 10); | |
175 | // gMC->Gspos("S01O",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
176 | // gMC->Gspos("S01O",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
177 | // gMC->Gspos("S02O",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
178 | // gMC->Gspos("S02O",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
179 | // // | |
180 | // // Inner frame | |
b7ef3c96 | 181 | // tpar[0]= AliMUONConstants::Rmin(0)-dframep1; |
182 | // tpar[1]= AliMUONConstants::Rmin(0); | |
d1cd2474 | 183 | // tpar[2]= dframez/2; |
184 | // gMC->Gsvolu("S01I", "TUBE", idAlu1, tpar, 3); | |
185 | // gMC->Gsvolu("S02I", "TUBE", idAlu1, tpar, 3); | |
186 | ||
187 | // gMC->Gspos("S01I",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
188 | // gMC->Gspos("S01I",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
189 | // gMC->Gspos("S02I",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
190 | // gMC->Gspos("S02I",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
191 | // | |
192 | // Frame Crosses | |
193 | if (frameCrosses) { | |
194 | // outside gas | |
195 | // security for inside mother volume | |
196 | Float_t bpar[3]; | |
b7ef3c96 | 197 | bpar[0] = (AliMUONConstants::Rmax(0) - AliMUONConstants::Rmin(0)) |
d1cd2474 | 198 | * TMath::Cos(TMath::ASin(dframep1 / |
b7ef3c96 | 199 | (AliMUONConstants::Rmax(0) - AliMUONConstants::Rmin(0)))) |
d1cd2474 | 200 | / 2.0; |
201 | bpar[1] = dframep1/2; | |
202 | // total thickness will be (4 * bpar[2]) for each chamber, | |
203 | // which has to be equal to (2 * dframez) - DAlu | |
b7ef3c96 | 204 | bpar[2] = (2.0 * dframez - kDAlu) / 4.0; |
d1cd2474 | 205 | gMC->Gsvolu("S01B", "BOX", idAlu1, bpar, 3); |
206 | gMC->Gsvolu("S02B", "BOX", idAlu1, bpar, 3); | |
207 | ||
b7ef3c96 | 208 | gMC->Gspos("S01B",1,"S01M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,-zfpos, |
d1cd2474 | 209 | irot1,"ONLY"); |
b7ef3c96 | 210 | gMC->Gspos("S01B",2,"S01M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,-zfpos, |
d1cd2474 | 211 | irot1,"ONLY"); |
b7ef3c96 | 212 | gMC->Gspos("S01B",3,"S01M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,-zfpos, |
d1cd2474 | 213 | irot2,"ONLY"); |
b7ef3c96 | 214 | gMC->Gspos("S01B",4,"S01M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,-zfpos, |
d1cd2474 | 215 | irot2,"ONLY"); |
b7ef3c96 | 216 | gMC->Gspos("S01B",5,"S01M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,+zfpos, |
d1cd2474 | 217 | irot1,"ONLY"); |
b7ef3c96 | 218 | gMC->Gspos("S01B",6,"S01M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,+zfpos, |
d1cd2474 | 219 | irot1,"ONLY"); |
b7ef3c96 | 220 | gMC->Gspos("S01B",7,"S01M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,+zfpos, |
d1cd2474 | 221 | irot2,"ONLY"); |
b7ef3c96 | 222 | gMC->Gspos("S01B",8,"S01M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,+zfpos, |
d1cd2474 | 223 | irot2,"ONLY"); |
224 | ||
b7ef3c96 | 225 | gMC->Gspos("S02B",1,"S02M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,-zfpos, |
d1cd2474 | 226 | irot1,"ONLY"); |
b7ef3c96 | 227 | gMC->Gspos("S02B",2,"S02M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,-zfpos, |
d1cd2474 | 228 | irot1,"ONLY"); |
b7ef3c96 | 229 | gMC->Gspos("S02B",3,"S02M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,-zfpos, |
d1cd2474 | 230 | irot2,"ONLY"); |
b7ef3c96 | 231 | gMC->Gspos("S02B",4,"S02M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,-zfpos, |
d1cd2474 | 232 | irot2,"ONLY"); |
b7ef3c96 | 233 | gMC->Gspos("S02B",5,"S02M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,+zfpos, |
d1cd2474 | 234 | irot1,"ONLY"); |
b7ef3c96 | 235 | gMC->Gspos("S02B",6,"S02M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,+zfpos, |
d1cd2474 | 236 | irot1,"ONLY"); |
b7ef3c96 | 237 | gMC->Gspos("S02B",7,"S02M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,+zfpos, |
d1cd2474 | 238 | irot2,"ONLY"); |
b7ef3c96 | 239 | gMC->Gspos("S02B",8,"S02M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,+zfpos, |
d1cd2474 | 240 | irot2,"ONLY"); |
241 | } | |
242 | // | |
243 | // Chamber Material represented by Alu sheet | |
b7ef3c96 | 244 | tpar[0]= AliMUONConstants::Rmin(0); |
245 | tpar[1]= AliMUONConstants::Rmax(0); | |
246 | tpar[2] = (kDGas+kDAlu)/2; | |
d1cd2474 | 247 | gMC->Gsvolu("S01A", "TUBE", idAlu2, tpar, 3); |
248 | gMC->Gsvolu("S02A", "TUBE",idAlu2, tpar, 3); | |
249 | gMC->Gspos("S01A", 1, "S01M", 0., 0., 0., 0, "ONLY"); | |
250 | gMC->Gspos("S02A", 1, "S02M", 0., 0., 0., 0, "ONLY"); | |
251 | // | |
252 | // Sensitive volumes | |
b7ef3c96 | 253 | // tpar[2] = kDGas; |
254 | tpar[2] = kDGas/2; | |
d1cd2474 | 255 | gMC->Gsvolu("S01G", "TUBE", idGas, tpar, 3); |
256 | gMC->Gsvolu("S02G", "TUBE", idGas, tpar, 3); | |
257 | gMC->Gspos("S01G", 1, "S01A", 0., 0., 0., 0, "ONLY"); | |
258 | gMC->Gspos("S02G", 1, "S02A", 0., 0., 0., 0, "ONLY"); | |
259 | // | |
260 | // Frame Crosses to be placed inside gas | |
261 | // NONE: chambers are sensitive everywhere | |
262 | // if (frameCrosses) { | |
263 | ||
b7ef3c96 | 264 | // dr = (AliMUONConstants::Rmax(0) - AliMUONConstants::Rmin(0)); |
d1cd2474 | 265 | // bpar[0] = TMath::Sqrt(dr*dr-dframep1*dframep1/4)/2; |
266 | // bpar[1] = dframep1/2; | |
b7ef3c96 | 267 | // bpar[2] = kDGas/2; |
d1cd2474 | 268 | // gMC->Gsvolu("S01F", "BOX", idAlu1, bpar, 3); |
269 | // gMC->Gsvolu("S02F", "BOX", idAlu1, bpar, 3); | |
270 | ||
b7ef3c96 | 271 | // gMC->Gspos("S01F",1,"S01G", +AliMUONConstants::Rmin(0)+bpar[0] , 0, 0, |
d1cd2474 | 272 | // irot1,"ONLY"); |
b7ef3c96 | 273 | // gMC->Gspos("S01F",2,"S01G", -AliMUONConstants::Rmin(0)-bpar[0] , 0, 0, |
d1cd2474 | 274 | // irot1,"ONLY"); |
b7ef3c96 | 275 | // gMC->Gspos("S01F",3,"S01G", 0, +AliMUONConstants::Rmin(0)+bpar[0] , 0, |
d1cd2474 | 276 | // irot2,"ONLY"); |
b7ef3c96 | 277 | // gMC->Gspos("S01F",4,"S01G", 0, -AliMUONConstants::Rmin(0)-bpar[0] , 0, |
d1cd2474 | 278 | // irot2,"ONLY"); |
279 | ||
b7ef3c96 | 280 | // gMC->Gspos("S02F",1,"S02G", +AliMUONConstants::Rmin(0)+bpar[0] , 0, 0, |
d1cd2474 | 281 | // irot1,"ONLY"); |
b7ef3c96 | 282 | // gMC->Gspos("S02F",2,"S02G", -AliMUONConstants::Rmin(0)-bpar[0] , 0, 0, |
d1cd2474 | 283 | // irot1,"ONLY"); |
b7ef3c96 | 284 | // gMC->Gspos("S02F",3,"S02G", 0, +AliMUONConstants::Rmin(0)+bpar[0] , 0, |
d1cd2474 | 285 | // irot2,"ONLY"); |
b7ef3c96 | 286 | // gMC->Gspos("S02F",4,"S02G", 0, -AliMUONConstants::Rmin(0)-bpar[0] , 0, |
d1cd2474 | 287 | // irot2,"ONLY"); |
288 | // } | |
289 | } | |
290 | ||
291 | //______________________________________________________________________________ | |
292 | void AliMUONSt1GeometryBuilder::SetTransformations() | |
293 | { | |
294 | // Defines the transformations for the station2 chambers. | |
295 | // --- | |
296 | ||
b7ef3c96 | 297 | Double_t zpos1= - AliMUONConstants::DefaultChamberZ(0); |
298 | SetTranslation(0, TGeoTranslation(0., 0., zpos1)); | |
d1cd2474 | 299 | |
b7ef3c96 | 300 | Double_t zpos2 = - AliMUONConstants::DefaultChamberZ(1); |
301 | SetTranslation(0, TGeoTranslation(0., 0., zpos2)); | |
d1cd2474 | 302 | } |
303 | ||
304 | //______________________________________________________________________________ | |
305 | void AliMUONSt1GeometryBuilder::SetSensitiveVolumes() | |
306 | { | |
307 | // Defines the sensitive volumes for station1 chambers. | |
308 | // --- | |
309 | ||
e118b27e | 310 | GetGeometry(0)->SetSensitiveVolume("S01G"); |
311 | GetGeometry(1)->SetSensitiveVolume("S02G"); | |
d1cd2474 | 312 | } |