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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" | |
32 | #include "AliMUONChamber.h" | |
e118b27e | 33 | #include "AliMUONGeometryModule.h" |
a432117a | 34 | #include "AliMUONGeometryEnvelopeStore.h" |
d1cd2474 | 35 | |
36 | ClassImp(AliMUONSt1GeometryBuilder) | |
37 | ||
38 | //______________________________________________________________________________ | |
39 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(AliMUON* muon) | |
a432117a | 40 | : AliMUONVGeometryBuilder("st1.dat", |
e118b27e | 41 | muon->Chamber(0).GetGeometry(), |
42 | muon->Chamber(1).GetGeometry()), | |
d1cd2474 | 43 | fMUON(muon) |
44 | { | |
45 | // Standard constructor | |
46 | ||
47 | } | |
48 | ||
49 | //______________________________________________________________________________ | |
50 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder() | |
51 | : AliMUONVGeometryBuilder(), | |
52 | fMUON(0) | |
53 | { | |
54 | // Default constructor | |
55 | } | |
56 | ||
57 | ||
58 | //______________________________________________________________________________ | |
59 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(const AliMUONSt1GeometryBuilder& rhs) | |
60 | : AliMUONVGeometryBuilder(rhs) | |
61 | { | |
30178c30 | 62 | // Protected copy constructor |
63 | ||
8c343c7c | 64 | AliFatal("Copy constructor is not implemented."); |
d1cd2474 | 65 | } |
66 | ||
67 | //______________________________________________________________________________ | |
68 | AliMUONSt1GeometryBuilder::~AliMUONSt1GeometryBuilder() { | |
69 | // | |
70 | } | |
71 | ||
72 | //______________________________________________________________________________ | |
73 | AliMUONSt1GeometryBuilder& | |
74 | AliMUONSt1GeometryBuilder::operator = (const AliMUONSt1GeometryBuilder& rhs) | |
75 | { | |
30178c30 | 76 | // Protected assignement operator |
77 | ||
d1cd2474 | 78 | // check assignement to self |
79 | if (this == &rhs) return *this; | |
80 | ||
8c343c7c | 81 | AliFatal("Assignment operator is not implemented."); |
d1cd2474 | 82 | |
83 | return *this; | |
84 | } | |
85 | ||
86 | // | |
87 | // public methods | |
88 | // | |
89 | ||
90 | //______________________________________________________________________________ | |
91 | void AliMUONSt1GeometryBuilder::CreateGeometry() | |
92 | { | |
93 | // From AliMUONv1::CreateGeometry() | |
94 | // --- | |
95 | ||
96 | //******************************************************************** | |
97 | // Station 1 ** | |
98 | //******************************************************************** | |
99 | // CONCENTRIC | |
100 | // indices 1 and 2 for first and second chambers in the station | |
101 | // iChamber (first chamber) kept for other quanties than Z, | |
102 | // assumed to be the same in both chambers | |
103 | ||
104 | // Get tracking medias Ids | |
105 | Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099; | |
106 | Int_t idAir= idtmed[1100]; // medium 1 | |
107 | Int_t idAlu1=idtmed[1103]; // medium 4 | |
108 | Int_t idAlu2=idtmed[1104]; // medium 5 | |
109 | Int_t idGas=idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%) | |
110 | Bool_t frameCrosses=kTRUE; | |
111 | ||
112 | // Rotation matrices in the x-y plane | |
113 | // phi= 0 deg | |
114 | Int_t irot1; | |
115 | fMUON->AliMatrix(irot1, 90., 0., 90., 90., 0., 0.); | |
116 | // phi= 90 deg | |
117 | Int_t irot2; | |
118 | fMUON->AliMatrix(irot2, 90., 90., 90., 180., 0., 0.); | |
119 | ||
e118b27e | 120 | AliMUONChamber* iChamber1 = &fMUON->Chamber(0); |
121 | AliMUONChamber* iChamber2 = &fMUON->Chamber(1); | |
d1cd2474 | 122 | AliMUONChamber* iChamber = iChamber1; |
123 | ||
124 | // DGas decreased from standard one (0.5) | |
125 | iChamber->SetDGas(0.4); | |
126 | iChamber2->SetDGas(0.4); | |
127 | ||
128 | // DAlu increased from standard one (3% of X0), | |
129 | // because more electronics with smaller pads | |
130 | iChamber->SetDAlu(3.5 * 8.9 / 100.); | |
131 | iChamber2->SetDAlu(3.5 * 8.9 / 100.); | |
132 | ||
133 | // Half of the total thickness of frame crosses (including DAlu) | |
134 | // for each chamber in stations 1 and 2: | |
135 | // 3% of X0 of composite material, | |
136 | // but taken as Aluminium here, with same thickness in number of X0 | |
137 | Float_t dframez = 3. * 8.9 / 100; | |
138 | Float_t zfpos=-(iChamber->DGas()+dframez+iChamber->DAlu())/2; | |
139 | // The same parameters are defined in builder for station 2 | |
140 | ||
141 | // Mother volume | |
142 | // Outer excess and inner recess for mother volume radius | |
143 | // with respect to ROuter and RInner | |
144 | Float_t dframep=.001; // Value for station 3 should be 6 ... | |
145 | // Width (RdPhi) of the frame crosses for stations 1 and 2 (cm) | |
146 | // Float_t dframep1=.001; | |
147 | Float_t dframep1 = 11.0; | |
148 | Float_t phi=2*TMath::Pi()/12/2; | |
149 | // The same parameters are defined in builder for station 2 | |
150 | ||
151 | Float_t tpar[3]; | |
152 | Float_t dstation = (-iChamber2->Z()) - (-iChamber1->Z()); | |
153 | tpar[0] = iChamber->RInner()-dframep; | |
154 | tpar[1] = (iChamber->ROuter()+dframep)/TMath::Cos(phi); | |
155 | tpar[2] = dstation/5; | |
156 | ||
157 | gMC->Gsvolu("S01M", "TUBE", idAir, tpar, 3); | |
158 | gMC->Gsvolu("S02M", "TUBE", idAir, tpar, 3); | |
159 | ||
160 | // CHANGED | |
161 | //gMC->Gspos("S01M", 1, "ALIC", 0., 0., zpos1 , 0, "ONLY"); | |
a432117a | 162 | //gMC->Gspos("S02M", 1, "ALIC", 0., 0., zpos2 , 0, "ONLY"); |
163 | ||
164 | GetEnvelopes(0)->AddEnvelope("S01M", 100, false); | |
165 | GetEnvelopes(1)->AddEnvelope("S02M", 200, false); | |
166 | ||
d1cd2474 | 167 | |
168 | // // Aluminium frames | |
169 | // // Outer frames | |
170 | // pgpar[0] = 360/12/2; | |
171 | // pgpar[1] = 360.; | |
172 | // pgpar[2] = 12.; | |
173 | // pgpar[3] = 2; | |
174 | // pgpar[4] = -dframez/2; | |
175 | // pgpar[5] = iChamber->ROuter(); | |
176 | // pgpar[6] = pgpar[5]+dframep1; | |
177 | // pgpar[7] = +dframez/2; | |
178 | // pgpar[8] = pgpar[5]; | |
179 | // pgpar[9] = pgpar[6]; | |
180 | // gMC->Gsvolu("S01O", "PGON", idAlu1, pgpar, 10); | |
181 | // gMC->Gsvolu("S02O", "PGON", idAlu1, pgpar, 10); | |
182 | // gMC->Gspos("S01O",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
183 | // gMC->Gspos("S01O",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
184 | // gMC->Gspos("S02O",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
185 | // gMC->Gspos("S02O",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
186 | // // | |
187 | // // Inner frame | |
188 | // tpar[0]= iChamber->RInner()-dframep1; | |
189 | // tpar[1]= iChamber->RInner(); | |
190 | // tpar[2]= dframez/2; | |
191 | // gMC->Gsvolu("S01I", "TUBE", idAlu1, tpar, 3); | |
192 | // gMC->Gsvolu("S02I", "TUBE", idAlu1, tpar, 3); | |
193 | ||
194 | // gMC->Gspos("S01I",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
195 | // gMC->Gspos("S01I",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
196 | // gMC->Gspos("S02I",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
197 | // gMC->Gspos("S02I",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
198 | // | |
199 | // Frame Crosses | |
200 | if (frameCrosses) { | |
201 | // outside gas | |
202 | // security for inside mother volume | |
203 | Float_t bpar[3]; | |
204 | bpar[0] = (iChamber->ROuter() - iChamber->RInner()) | |
205 | * TMath::Cos(TMath::ASin(dframep1 / | |
206 | (iChamber->ROuter() - iChamber->RInner()))) | |
207 | / 2.0; | |
208 | bpar[1] = dframep1/2; | |
209 | // total thickness will be (4 * bpar[2]) for each chamber, | |
210 | // which has to be equal to (2 * dframez) - DAlu | |
211 | bpar[2] = (2.0 * dframez - iChamber->DAlu()) / 4.0; | |
212 | gMC->Gsvolu("S01B", "BOX", idAlu1, bpar, 3); | |
213 | gMC->Gsvolu("S02B", "BOX", idAlu1, bpar, 3); | |
214 | ||
215 | gMC->Gspos("S01B",1,"S01M", +iChamber->RInner()+bpar[0] , 0,-zfpos, | |
216 | irot1,"ONLY"); | |
217 | gMC->Gspos("S01B",2,"S01M", -iChamber->RInner()-bpar[0] , 0,-zfpos, | |
218 | irot1,"ONLY"); | |
219 | gMC->Gspos("S01B",3,"S01M", 0, +iChamber->RInner()+bpar[0] ,-zfpos, | |
220 | irot2,"ONLY"); | |
221 | gMC->Gspos("S01B",4,"S01M", 0, -iChamber->RInner()-bpar[0] ,-zfpos, | |
222 | irot2,"ONLY"); | |
223 | gMC->Gspos("S01B",5,"S01M", +iChamber->RInner()+bpar[0] , 0,+zfpos, | |
224 | irot1,"ONLY"); | |
225 | gMC->Gspos("S01B",6,"S01M", -iChamber->RInner()-bpar[0] , 0,+zfpos, | |
226 | irot1,"ONLY"); | |
227 | gMC->Gspos("S01B",7,"S01M", 0, +iChamber->RInner()+bpar[0] ,+zfpos, | |
228 | irot2,"ONLY"); | |
229 | gMC->Gspos("S01B",8,"S01M", 0, -iChamber->RInner()-bpar[0] ,+zfpos, | |
230 | irot2,"ONLY"); | |
231 | ||
232 | gMC->Gspos("S02B",1,"S02M", +iChamber->RInner()+bpar[0] , 0,-zfpos, | |
233 | irot1,"ONLY"); | |
234 | gMC->Gspos("S02B",2,"S02M", -iChamber->RInner()-bpar[0] , 0,-zfpos, | |
235 | irot1,"ONLY"); | |
236 | gMC->Gspos("S02B",3,"S02M", 0, +iChamber->RInner()+bpar[0] ,-zfpos, | |
237 | irot2,"ONLY"); | |
238 | gMC->Gspos("S02B",4,"S02M", 0, -iChamber->RInner()-bpar[0] ,-zfpos, | |
239 | irot2,"ONLY"); | |
240 | gMC->Gspos("S02B",5,"S02M", +iChamber->RInner()+bpar[0] , 0,+zfpos, | |
241 | irot1,"ONLY"); | |
242 | gMC->Gspos("S02B",6,"S02M", -iChamber->RInner()-bpar[0] , 0,+zfpos, | |
243 | irot1,"ONLY"); | |
244 | gMC->Gspos("S02B",7,"S02M", 0, +iChamber->RInner()+bpar[0] ,+zfpos, | |
245 | irot2,"ONLY"); | |
246 | gMC->Gspos("S02B",8,"S02M", 0, -iChamber->RInner()-bpar[0] ,+zfpos, | |
247 | irot2,"ONLY"); | |
248 | } | |
249 | // | |
250 | // Chamber Material represented by Alu sheet | |
251 | tpar[0]= iChamber->RInner(); | |
252 | tpar[1]= iChamber->ROuter(); | |
253 | tpar[2] = (iChamber->DGas()+iChamber->DAlu())/2; | |
254 | gMC->Gsvolu("S01A", "TUBE", idAlu2, tpar, 3); | |
255 | gMC->Gsvolu("S02A", "TUBE",idAlu2, tpar, 3); | |
256 | gMC->Gspos("S01A", 1, "S01M", 0., 0., 0., 0, "ONLY"); | |
257 | gMC->Gspos("S02A", 1, "S02M", 0., 0., 0., 0, "ONLY"); | |
258 | // | |
259 | // Sensitive volumes | |
260 | // tpar[2] = iChamber->DGas(); | |
261 | tpar[2] = iChamber->DGas()/2; | |
262 | gMC->Gsvolu("S01G", "TUBE", idGas, tpar, 3); | |
263 | gMC->Gsvolu("S02G", "TUBE", idGas, tpar, 3); | |
264 | gMC->Gspos("S01G", 1, "S01A", 0., 0., 0., 0, "ONLY"); | |
265 | gMC->Gspos("S02G", 1, "S02A", 0., 0., 0., 0, "ONLY"); | |
266 | // | |
267 | // Frame Crosses to be placed inside gas | |
268 | // NONE: chambers are sensitive everywhere | |
269 | // if (frameCrosses) { | |
270 | ||
271 | // dr = (iChamber->ROuter() - iChamber->RInner()); | |
272 | // bpar[0] = TMath::Sqrt(dr*dr-dframep1*dframep1/4)/2; | |
273 | // bpar[1] = dframep1/2; | |
274 | // bpar[2] = iChamber->DGas()/2; | |
275 | // gMC->Gsvolu("S01F", "BOX", idAlu1, bpar, 3); | |
276 | // gMC->Gsvolu("S02F", "BOX", idAlu1, bpar, 3); | |
277 | ||
278 | // gMC->Gspos("S01F",1,"S01G", +iChamber->RInner()+bpar[0] , 0, 0, | |
279 | // irot1,"ONLY"); | |
280 | // gMC->Gspos("S01F",2,"S01G", -iChamber->RInner()-bpar[0] , 0, 0, | |
281 | // irot1,"ONLY"); | |
282 | // gMC->Gspos("S01F",3,"S01G", 0, +iChamber->RInner()+bpar[0] , 0, | |
283 | // irot2,"ONLY"); | |
284 | // gMC->Gspos("S01F",4,"S01G", 0, -iChamber->RInner()-bpar[0] , 0, | |
285 | // irot2,"ONLY"); | |
286 | ||
287 | // gMC->Gspos("S02F",1,"S02G", +iChamber->RInner()+bpar[0] , 0, 0, | |
288 | // irot1,"ONLY"); | |
289 | // gMC->Gspos("S02F",2,"S02G", -iChamber->RInner()-bpar[0] , 0, 0, | |
290 | // irot1,"ONLY"); | |
291 | // gMC->Gspos("S02F",3,"S02G", 0, +iChamber->RInner()+bpar[0] , 0, | |
292 | // irot2,"ONLY"); | |
293 | // gMC->Gspos("S02F",4,"S02G", 0, -iChamber->RInner()-bpar[0] , 0, | |
294 | // irot2,"ONLY"); | |
295 | // } | |
296 | } | |
297 | ||
298 | //______________________________________________________________________________ | |
299 | void AliMUONSt1GeometryBuilder::SetTransformations() | |
300 | { | |
301 | // Defines the transformations for the station2 chambers. | |
302 | // --- | |
303 | ||
e118b27e | 304 | AliMUONChamber* iChamber1 = &fMUON->Chamber(0); |
d1cd2474 | 305 | Double_t zpos1= - iChamber1->Z(); |
306 | iChamber1->GetGeometry() | |
307 | ->SetTranslation(TGeoTranslation(0., 0., zpos1)); | |
308 | ||
e118b27e | 309 | AliMUONChamber* iChamber2 = &fMUON->Chamber(1); |
d1cd2474 | 310 | Double_t zpos2 = - iChamber2->Z(); |
311 | iChamber2->GetGeometry() | |
312 | ->SetTranslation(TGeoTranslation(0., 0., zpos2)); | |
313 | } | |
314 | ||
315 | //______________________________________________________________________________ | |
316 | void AliMUONSt1GeometryBuilder::SetSensitiveVolumes() | |
317 | { | |
318 | // Defines the sensitive volumes for station1 chambers. | |
319 | // --- | |
320 | ||
e118b27e | 321 | GetGeometry(0)->SetSensitiveVolume("S01G"); |
322 | GetGeometry(1)->SetSensitiveVolume("S02G"); | |
d1cd2474 | 323 | } |