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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" | |
17c7d4c9 | 32 | #include "TArrayI.h" |
b7ef3c96 | 33 | #include "AliMUONConstants.h" |
e118b27e | 34 | #include "AliMUONGeometryModule.h" |
a432117a | 35 | #include "AliMUONGeometryEnvelopeStore.h" |
d1cd2474 | 36 | |
5398f946 | 37 | /// \cond CLASSIMP |
d1cd2474 | 38 | ClassImp(AliMUONSt1GeometryBuilder) |
5398f946 | 39 | /// \endcond |
d1cd2474 | 40 | |
41 | //______________________________________________________________________________ | |
42 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(AliMUON* muon) | |
8cf07955 | 43 | : AliMUONVGeometryBuilder(0, 2), |
d1cd2474 | 44 | fMUON(muon) |
45 | { | |
5398f946 | 46 | /// Standard constructor |
d1cd2474 | 47 | |
48 | } | |
49 | ||
50 | //______________________________________________________________________________ | |
51 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder() | |
52 | : AliMUONVGeometryBuilder(), | |
53 | fMUON(0) | |
54 | { | |
5398f946 | 55 | /// Default constructor |
d1cd2474 | 56 | } |
57 | ||
d1cd2474 | 58 | //______________________________________________________________________________ |
5398f946 | 59 | AliMUONSt1GeometryBuilder::~AliMUONSt1GeometryBuilder() |
60 | { | |
61 | /// Destructor | |
d1cd2474 | 62 | } |
63 | ||
d1cd2474 | 64 | // |
65 | // public methods | |
66 | // | |
67 | ||
68 | //______________________________________________________________________________ | |
69 | void AliMUONSt1GeometryBuilder::CreateGeometry() | |
70 | { | |
5398f946 | 71 | /// From AliMUONv1::CreateGeometry() |
d1cd2474 | 72 | |
73 | //******************************************************************** | |
74 | // Station 1 ** | |
75 | //******************************************************************** | |
76 | // CONCENTRIC | |
77 | // indices 1 and 2 for first and second chambers in the station | |
78 | // iChamber (first chamber) kept for other quanties than Z, | |
79 | // assumed to be the same in both chambers | |
80 | ||
81 | // Get tracking medias Ids | |
82 | Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099; | |
83 | Int_t idAir= idtmed[1100]; // medium 1 | |
84 | Int_t idAlu1=idtmed[1103]; // medium 4 | |
85 | Int_t idAlu2=idtmed[1104]; // medium 5 | |
86 | Int_t idGas=idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%) | |
87 | Bool_t frameCrosses=kTRUE; | |
88 | ||
89 | // Rotation matrices in the x-y plane | |
90 | // phi= 0 deg | |
91 | Int_t irot1; | |
92 | fMUON->AliMatrix(irot1, 90., 0., 90., 90., 0., 0.); | |
93 | // phi= 90 deg | |
94 | Int_t irot2; | |
95 | fMUON->AliMatrix(irot2, 90., 90., 90., 180., 0., 0.); | |
96 | ||
d1cd2474 | 97 | // DGas decreased from standard one (0.5) |
b7ef3c96 | 98 | const Float_t kDGas = 0.4; |
d1cd2474 | 99 | |
100 | // DAlu increased from standard one (3% of X0), | |
101 | // because more electronics with smaller pads | |
b7ef3c96 | 102 | const Float_t kDAlu = 3.5 * 8.9 / 100.; |
d1cd2474 | 103 | |
104 | // Half of the total thickness of frame crosses (including DAlu) | |
105 | // for each chamber in stations 1 and 2: | |
106 | // 3% of X0 of composite material, | |
107 | // but taken as Aluminium here, with same thickness in number of X0 | |
108 | Float_t dframez = 3. * 8.9 / 100; | |
b7ef3c96 | 109 | Float_t zfpos=-(kDGas+dframez+kDAlu)/2; |
d1cd2474 | 110 | // The same parameters are defined in builder for station 2 |
111 | ||
112 | // Mother volume | |
113 | // Outer excess and inner recess for mother volume radius | |
114 | // with respect to ROuter and RInner | |
115 | Float_t dframep=.001; // Value for station 3 should be 6 ... | |
116 | // Width (RdPhi) of the frame crosses for stations 1 and 2 (cm) | |
117 | // Float_t dframep1=.001; | |
118 | Float_t dframep1 = 11.0; | |
119 | Float_t phi=2*TMath::Pi()/12/2; | |
120 | // The same parameters are defined in builder for station 2 | |
121 | ||
122 | Float_t tpar[3]; | |
b7ef3c96 | 123 | Float_t dstation = (-AliMUONConstants::DefaultChamberZ(1)) - |
124 | (-AliMUONConstants::DefaultChamberZ(0)); | |
125 | tpar[0] = AliMUONConstants::Rmin(0)-dframep; | |
126 | tpar[1] = (AliMUONConstants::Rmax(0)+dframep)/TMath::Cos(phi); | |
d1cd2474 | 127 | tpar[2] = dstation/5; |
128 | ||
129 | gMC->Gsvolu("S01M", "TUBE", idAir, tpar, 3); | |
130 | gMC->Gsvolu("S02M", "TUBE", idAir, tpar, 3); | |
131 | ||
132 | // CHANGED | |
133 | //gMC->Gspos("S01M", 1, "ALIC", 0., 0., zpos1 , 0, "ONLY"); | |
a432117a | 134 | //gMC->Gspos("S02M", 1, "ALIC", 0., 0., zpos2 , 0, "ONLY"); |
135 | ||
136 | GetEnvelopes(0)->AddEnvelope("S01M", 100, false); | |
137 | GetEnvelopes(1)->AddEnvelope("S02M", 200, false); | |
138 | ||
d1cd2474 | 139 | |
140 | // // Aluminium frames | |
141 | // // Outer frames | |
142 | // pgpar[0] = 360/12/2; | |
143 | // pgpar[1] = 360.; | |
144 | // pgpar[2] = 12.; | |
145 | // pgpar[3] = 2; | |
146 | // pgpar[4] = -dframez/2; | |
b7ef3c96 | 147 | // pgpar[5] = AliMUONConstants::Rmax(0); |
d1cd2474 | 148 | // pgpar[6] = pgpar[5]+dframep1; |
149 | // pgpar[7] = +dframez/2; | |
150 | // pgpar[8] = pgpar[5]; | |
151 | // pgpar[9] = pgpar[6]; | |
152 | // gMC->Gsvolu("S01O", "PGON", idAlu1, pgpar, 10); | |
153 | // gMC->Gsvolu("S02O", "PGON", idAlu1, pgpar, 10); | |
154 | // gMC->Gspos("S01O",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
155 | // gMC->Gspos("S01O",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
156 | // gMC->Gspos("S02O",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
157 | // gMC->Gspos("S02O",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
158 | // // | |
159 | // // Inner frame | |
b7ef3c96 | 160 | // tpar[0]= AliMUONConstants::Rmin(0)-dframep1; |
161 | // tpar[1]= AliMUONConstants::Rmin(0); | |
d1cd2474 | 162 | // tpar[2]= dframez/2; |
163 | // gMC->Gsvolu("S01I", "TUBE", idAlu1, tpar, 3); | |
164 | // gMC->Gsvolu("S02I", "TUBE", idAlu1, tpar, 3); | |
165 | ||
166 | // gMC->Gspos("S01I",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
167 | // gMC->Gspos("S01I",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
168 | // gMC->Gspos("S02I",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
169 | // gMC->Gspos("S02I",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
170 | // | |
171 | // Frame Crosses | |
172 | if (frameCrosses) { | |
173 | // outside gas | |
174 | // security for inside mother volume | |
175 | Float_t bpar[3]; | |
b7ef3c96 | 176 | bpar[0] = (AliMUONConstants::Rmax(0) - AliMUONConstants::Rmin(0)) |
d1cd2474 | 177 | * TMath::Cos(TMath::ASin(dframep1 / |
b7ef3c96 | 178 | (AliMUONConstants::Rmax(0) - AliMUONConstants::Rmin(0)))) |
d1cd2474 | 179 | / 2.0; |
180 | bpar[1] = dframep1/2; | |
181 | // total thickness will be (4 * bpar[2]) for each chamber, | |
182 | // which has to be equal to (2 * dframez) - DAlu | |
b7ef3c96 | 183 | bpar[2] = (2.0 * dframez - kDAlu) / 4.0; |
d1cd2474 | 184 | gMC->Gsvolu("S01B", "BOX", idAlu1, bpar, 3); |
185 | gMC->Gsvolu("S02B", "BOX", idAlu1, bpar, 3); | |
186 | ||
b7ef3c96 | 187 | gMC->Gspos("S01B",1,"S01M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,-zfpos, |
d1cd2474 | 188 | irot1,"ONLY"); |
b7ef3c96 | 189 | gMC->Gspos("S01B",2,"S01M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,-zfpos, |
d1cd2474 | 190 | irot1,"ONLY"); |
b7ef3c96 | 191 | gMC->Gspos("S01B",3,"S01M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,-zfpos, |
d1cd2474 | 192 | irot2,"ONLY"); |
b7ef3c96 | 193 | gMC->Gspos("S01B",4,"S01M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,-zfpos, |
d1cd2474 | 194 | irot2,"ONLY"); |
b7ef3c96 | 195 | gMC->Gspos("S01B",5,"S01M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,+zfpos, |
d1cd2474 | 196 | irot1,"ONLY"); |
b7ef3c96 | 197 | gMC->Gspos("S01B",6,"S01M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,+zfpos, |
d1cd2474 | 198 | irot1,"ONLY"); |
b7ef3c96 | 199 | gMC->Gspos("S01B",7,"S01M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,+zfpos, |
d1cd2474 | 200 | irot2,"ONLY"); |
b7ef3c96 | 201 | gMC->Gspos("S01B",8,"S01M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,+zfpos, |
d1cd2474 | 202 | irot2,"ONLY"); |
203 | ||
b7ef3c96 | 204 | gMC->Gspos("S02B",1,"S02M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,-zfpos, |
d1cd2474 | 205 | irot1,"ONLY"); |
b7ef3c96 | 206 | gMC->Gspos("S02B",2,"S02M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,-zfpos, |
d1cd2474 | 207 | irot1,"ONLY"); |
b7ef3c96 | 208 | gMC->Gspos("S02B",3,"S02M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,-zfpos, |
d1cd2474 | 209 | irot2,"ONLY"); |
b7ef3c96 | 210 | gMC->Gspos("S02B",4,"S02M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,-zfpos, |
d1cd2474 | 211 | irot2,"ONLY"); |
b7ef3c96 | 212 | gMC->Gspos("S02B",5,"S02M", +AliMUONConstants::Rmin(0)+bpar[0] , 0,+zfpos, |
d1cd2474 | 213 | irot1,"ONLY"); |
b7ef3c96 | 214 | gMC->Gspos("S02B",6,"S02M", -AliMUONConstants::Rmin(0)-bpar[0] , 0,+zfpos, |
d1cd2474 | 215 | irot1,"ONLY"); |
b7ef3c96 | 216 | gMC->Gspos("S02B",7,"S02M", 0, +AliMUONConstants::Rmin(0)+bpar[0] ,+zfpos, |
d1cd2474 | 217 | irot2,"ONLY"); |
b7ef3c96 | 218 | gMC->Gspos("S02B",8,"S02M", 0, -AliMUONConstants::Rmin(0)-bpar[0] ,+zfpos, |
d1cd2474 | 219 | irot2,"ONLY"); |
220 | } | |
221 | // | |
222 | // Chamber Material represented by Alu sheet | |
b7ef3c96 | 223 | tpar[0]= AliMUONConstants::Rmin(0); |
224 | tpar[1]= AliMUONConstants::Rmax(0); | |
225 | tpar[2] = (kDGas+kDAlu)/2; | |
d1cd2474 | 226 | gMC->Gsvolu("S01A", "TUBE", idAlu2, tpar, 3); |
227 | gMC->Gsvolu("S02A", "TUBE",idAlu2, tpar, 3); | |
228 | gMC->Gspos("S01A", 1, "S01M", 0., 0., 0., 0, "ONLY"); | |
229 | gMC->Gspos("S02A", 1, "S02M", 0., 0., 0., 0, "ONLY"); | |
230 | // | |
231 | // Sensitive volumes | |
b7ef3c96 | 232 | // tpar[2] = kDGas; |
233 | tpar[2] = kDGas/2; | |
d1cd2474 | 234 | gMC->Gsvolu("S01G", "TUBE", idGas, tpar, 3); |
235 | gMC->Gsvolu("S02G", "TUBE", idGas, tpar, 3); | |
236 | gMC->Gspos("S01G", 1, "S01A", 0., 0., 0., 0, "ONLY"); | |
237 | gMC->Gspos("S02G", 1, "S02A", 0., 0., 0., 0, "ONLY"); | |
238 | // | |
239 | // Frame Crosses to be placed inside gas | |
240 | // NONE: chambers are sensitive everywhere | |
241 | // if (frameCrosses) { | |
242 | ||
b7ef3c96 | 243 | // dr = (AliMUONConstants::Rmax(0) - AliMUONConstants::Rmin(0)); |
d1cd2474 | 244 | // bpar[0] = TMath::Sqrt(dr*dr-dframep1*dframep1/4)/2; |
245 | // bpar[1] = dframep1/2; | |
b7ef3c96 | 246 | // bpar[2] = kDGas/2; |
d1cd2474 | 247 | // gMC->Gsvolu("S01F", "BOX", idAlu1, bpar, 3); |
248 | // gMC->Gsvolu("S02F", "BOX", idAlu1, bpar, 3); | |
249 | ||
b7ef3c96 | 250 | // gMC->Gspos("S01F",1,"S01G", +AliMUONConstants::Rmin(0)+bpar[0] , 0, 0, |
d1cd2474 | 251 | // irot1,"ONLY"); |
b7ef3c96 | 252 | // gMC->Gspos("S01F",2,"S01G", -AliMUONConstants::Rmin(0)-bpar[0] , 0, 0, |
d1cd2474 | 253 | // irot1,"ONLY"); |
b7ef3c96 | 254 | // gMC->Gspos("S01F",3,"S01G", 0, +AliMUONConstants::Rmin(0)+bpar[0] , 0, |
d1cd2474 | 255 | // irot2,"ONLY"); |
b7ef3c96 | 256 | // gMC->Gspos("S01F",4,"S01G", 0, -AliMUONConstants::Rmin(0)-bpar[0] , 0, |
d1cd2474 | 257 | // irot2,"ONLY"); |
258 | ||
b7ef3c96 | 259 | // gMC->Gspos("S02F",1,"S02G", +AliMUONConstants::Rmin(0)+bpar[0] , 0, 0, |
d1cd2474 | 260 | // irot1,"ONLY"); |
b7ef3c96 | 261 | // gMC->Gspos("S02F",2,"S02G", -AliMUONConstants::Rmin(0)-bpar[0] , 0, 0, |
d1cd2474 | 262 | // irot1,"ONLY"); |
b7ef3c96 | 263 | // gMC->Gspos("S02F",3,"S02G", 0, +AliMUONConstants::Rmin(0)+bpar[0] , 0, |
d1cd2474 | 264 | // irot2,"ONLY"); |
b7ef3c96 | 265 | // gMC->Gspos("S02F",4,"S02G", 0, -AliMUONConstants::Rmin(0)-bpar[0] , 0, |
d1cd2474 | 266 | // irot2,"ONLY"); |
267 | // } | |
268 | } | |
269 | ||
270 | //______________________________________________________________________________ | |
271 | void AliMUONSt1GeometryBuilder::SetTransformations() | |
272 | { | |
5398f946 | 273 | /// Define the transformations for the station2 chambers. |
d1cd2474 | 274 | |
b7ef3c96 | 275 | Double_t zpos1= - AliMUONConstants::DefaultChamberZ(0); |
276 | SetTranslation(0, TGeoTranslation(0., 0., zpos1)); | |
d1cd2474 | 277 | |
b7ef3c96 | 278 | Double_t zpos2 = - AliMUONConstants::DefaultChamberZ(1); |
279 | SetTranslation(0, TGeoTranslation(0., 0., zpos2)); | |
d1cd2474 | 280 | } |
281 | ||
282 | //______________________________________________________________________________ | |
283 | void AliMUONSt1GeometryBuilder::SetSensitiveVolumes() | |
284 | { | |
5398f946 | 285 | /// Define the sensitive volumes for station1 chambers. |
d1cd2474 | 286 | |
e118b27e | 287 | GetGeometry(0)->SetSensitiveVolume("S01G"); |
288 | GetGeometry(1)->SetSensitiveVolume("S02G"); | |
d1cd2474 | 289 | } |