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d1cd2474 | 1 | // $Id$ |
2 | // | |
3 | // Class AliMUONSt1GeometryBuilder | |
4 | // ------------------------------- | |
5 | // MUON Station1 coarse geometry construction class. | |
d1cd2474 | 6 | // Extracted from AliMUONv1 |
7 | // by Ivana Hrivnacova, IPN Orsay | |
5f1df83a | 8 | // Included in AliRoot 2004/01/23 |
d1cd2474 | 9 | |
10 | #include <TVirtualMC.h> | |
11 | #include <TGeoMatrix.h> | |
12 | ||
13 | #include "AliMUONSt1GeometryBuilder.h" | |
14 | #include "AliMUON.h" | |
15 | #include "AliMUONChamber.h" | |
16 | #include "AliMUONChamberGeometry.h" | |
17 | ||
18 | ClassImp(AliMUONSt1GeometryBuilder) | |
19 | ||
20 | //______________________________________________________________________________ | |
21 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(AliMUON* muon) | |
22 | : AliMUONVGeometryBuilder(&muon->Chamber(0), &muon->Chamber(1)), | |
23 | fMUON(muon) | |
24 | { | |
25 | // Standard constructor | |
26 | ||
27 | } | |
28 | ||
29 | //______________________________________________________________________________ | |
30 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder() | |
31 | : AliMUONVGeometryBuilder(), | |
32 | fMUON(0) | |
33 | { | |
34 | // Default constructor | |
35 | } | |
36 | ||
37 | ||
38 | //______________________________________________________________________________ | |
39 | AliMUONSt1GeometryBuilder::AliMUONSt1GeometryBuilder(const AliMUONSt1GeometryBuilder& rhs) | |
40 | : AliMUONVGeometryBuilder(rhs) | |
41 | { | |
30178c30 | 42 | // Protected copy constructor |
43 | ||
d1cd2474 | 44 | Fatal("Copy constructor", |
45 | "Copy constructor is not implemented."); | |
46 | } | |
47 | ||
48 | //______________________________________________________________________________ | |
49 | AliMUONSt1GeometryBuilder::~AliMUONSt1GeometryBuilder() { | |
50 | // | |
51 | } | |
52 | ||
53 | //______________________________________________________________________________ | |
54 | AliMUONSt1GeometryBuilder& | |
55 | AliMUONSt1GeometryBuilder::operator = (const AliMUONSt1GeometryBuilder& rhs) | |
56 | { | |
30178c30 | 57 | // Protected assignement operator |
58 | ||
d1cd2474 | 59 | // check assignement to self |
60 | if (this == &rhs) return *this; | |
61 | ||
62 | Fatal("operator=", | |
63 | "Assignment operator is not implemented."); | |
64 | ||
65 | return *this; | |
66 | } | |
67 | ||
68 | // | |
69 | // public methods | |
70 | // | |
71 | ||
72 | //______________________________________________________________________________ | |
73 | void AliMUONSt1GeometryBuilder::CreateGeometry() | |
74 | { | |
75 | // From AliMUONv1::CreateGeometry() | |
76 | // --- | |
77 | ||
78 | //******************************************************************** | |
79 | // Station 1 ** | |
80 | //******************************************************************** | |
81 | // CONCENTRIC | |
82 | // indices 1 and 2 for first and second chambers in the station | |
83 | // iChamber (first chamber) kept for other quanties than Z, | |
84 | // assumed to be the same in both chambers | |
85 | ||
86 | // Get tracking medias Ids | |
87 | Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099; | |
88 | Int_t idAir= idtmed[1100]; // medium 1 | |
89 | Int_t idAlu1=idtmed[1103]; // medium 4 | |
90 | Int_t idAlu2=idtmed[1104]; // medium 5 | |
91 | Int_t idGas=idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%) | |
92 | Bool_t frameCrosses=kTRUE; | |
93 | ||
94 | // Rotation matrices in the x-y plane | |
95 | // phi= 0 deg | |
96 | Int_t irot1; | |
97 | fMUON->AliMatrix(irot1, 90., 0., 90., 90., 0., 0.); | |
98 | // phi= 90 deg | |
99 | Int_t irot2; | |
100 | fMUON->AliMatrix(irot2, 90., 90., 90., 180., 0., 0.); | |
101 | ||
102 | AliMUONChamber* iChamber1 = GetChamber(0); | |
103 | AliMUONChamber* iChamber2 = GetChamber(1); | |
104 | AliMUONChamber* iChamber = iChamber1; | |
105 | ||
106 | // DGas decreased from standard one (0.5) | |
107 | iChamber->SetDGas(0.4); | |
108 | iChamber2->SetDGas(0.4); | |
109 | ||
110 | // DAlu increased from standard one (3% of X0), | |
111 | // because more electronics with smaller pads | |
112 | iChamber->SetDAlu(3.5 * 8.9 / 100.); | |
113 | iChamber2->SetDAlu(3.5 * 8.9 / 100.); | |
114 | ||
115 | // Half of the total thickness of frame crosses (including DAlu) | |
116 | // for each chamber in stations 1 and 2: | |
117 | // 3% of X0 of composite material, | |
118 | // but taken as Aluminium here, with same thickness in number of X0 | |
119 | Float_t dframez = 3. * 8.9 / 100; | |
120 | Float_t zfpos=-(iChamber->DGas()+dframez+iChamber->DAlu())/2; | |
121 | // The same parameters are defined in builder for station 2 | |
122 | ||
123 | // Mother volume | |
124 | // Outer excess and inner recess for mother volume radius | |
125 | // with respect to ROuter and RInner | |
126 | Float_t dframep=.001; // Value for station 3 should be 6 ... | |
127 | // Width (RdPhi) of the frame crosses for stations 1 and 2 (cm) | |
128 | // Float_t dframep1=.001; | |
129 | Float_t dframep1 = 11.0; | |
130 | Float_t phi=2*TMath::Pi()/12/2; | |
131 | // The same parameters are defined in builder for station 2 | |
132 | ||
133 | Float_t tpar[3]; | |
134 | Float_t dstation = (-iChamber2->Z()) - (-iChamber1->Z()); | |
135 | tpar[0] = iChamber->RInner()-dframep; | |
136 | tpar[1] = (iChamber->ROuter()+dframep)/TMath::Cos(phi); | |
137 | tpar[2] = dstation/5; | |
138 | ||
139 | gMC->Gsvolu("S01M", "TUBE", idAir, tpar, 3); | |
140 | gMC->Gsvolu("S02M", "TUBE", idAir, tpar, 3); | |
141 | ||
142 | // CHANGED | |
143 | //gMC->Gspos("S01M", 1, "ALIC", 0., 0., zpos1 , 0, "ONLY"); | |
144 | //gMC->Gspos("S02M", 1, "ALIC", 0., 0., zpos2 , 0, "ONLY"); | |
145 | GetChamber(0)->GetGeometry()->AddEnvelope("S01M", false); | |
146 | GetChamber(1)->GetGeometry()->AddEnvelope("S02M", false); | |
147 | ||
148 | // // Aluminium frames | |
149 | // // Outer frames | |
150 | // pgpar[0] = 360/12/2; | |
151 | // pgpar[1] = 360.; | |
152 | // pgpar[2] = 12.; | |
153 | // pgpar[3] = 2; | |
154 | // pgpar[4] = -dframez/2; | |
155 | // pgpar[5] = iChamber->ROuter(); | |
156 | // pgpar[6] = pgpar[5]+dframep1; | |
157 | // pgpar[7] = +dframez/2; | |
158 | // pgpar[8] = pgpar[5]; | |
159 | // pgpar[9] = pgpar[6]; | |
160 | // gMC->Gsvolu("S01O", "PGON", idAlu1, pgpar, 10); | |
161 | // gMC->Gsvolu("S02O", "PGON", idAlu1, pgpar, 10); | |
162 | // gMC->Gspos("S01O",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
163 | // gMC->Gspos("S01O",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
164 | // gMC->Gspos("S02O",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
165 | // gMC->Gspos("S02O",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
166 | // // | |
167 | // // Inner frame | |
168 | // tpar[0]= iChamber->RInner()-dframep1; | |
169 | // tpar[1]= iChamber->RInner(); | |
170 | // tpar[2]= dframez/2; | |
171 | // gMC->Gsvolu("S01I", "TUBE", idAlu1, tpar, 3); | |
172 | // gMC->Gsvolu("S02I", "TUBE", idAlu1, tpar, 3); | |
173 | ||
174 | // gMC->Gspos("S01I",1,"S01M", 0.,0.,-zfpos, 0,"ONLY"); | |
175 | // gMC->Gspos("S01I",2,"S01M", 0.,0.,+zfpos, 0,"ONLY"); | |
176 | // gMC->Gspos("S02I",1,"S02M", 0.,0.,-zfpos, 0,"ONLY"); | |
177 | // gMC->Gspos("S02I",2,"S02M", 0.,0.,+zfpos, 0,"ONLY"); | |
178 | // | |
179 | // Frame Crosses | |
180 | if (frameCrosses) { | |
181 | // outside gas | |
182 | // security for inside mother volume | |
183 | Float_t bpar[3]; | |
184 | bpar[0] = (iChamber->ROuter() - iChamber->RInner()) | |
185 | * TMath::Cos(TMath::ASin(dframep1 / | |
186 | (iChamber->ROuter() - iChamber->RInner()))) | |
187 | / 2.0; | |
188 | bpar[1] = dframep1/2; | |
189 | // total thickness will be (4 * bpar[2]) for each chamber, | |
190 | // which has to be equal to (2 * dframez) - DAlu | |
191 | bpar[2] = (2.0 * dframez - iChamber->DAlu()) / 4.0; | |
192 | gMC->Gsvolu("S01B", "BOX", idAlu1, bpar, 3); | |
193 | gMC->Gsvolu("S02B", "BOX", idAlu1, bpar, 3); | |
194 | ||
195 | gMC->Gspos("S01B",1,"S01M", +iChamber->RInner()+bpar[0] , 0,-zfpos, | |
196 | irot1,"ONLY"); | |
197 | gMC->Gspos("S01B",2,"S01M", -iChamber->RInner()-bpar[0] , 0,-zfpos, | |
198 | irot1,"ONLY"); | |
199 | gMC->Gspos("S01B",3,"S01M", 0, +iChamber->RInner()+bpar[0] ,-zfpos, | |
200 | irot2,"ONLY"); | |
201 | gMC->Gspos("S01B",4,"S01M", 0, -iChamber->RInner()-bpar[0] ,-zfpos, | |
202 | irot2,"ONLY"); | |
203 | gMC->Gspos("S01B",5,"S01M", +iChamber->RInner()+bpar[0] , 0,+zfpos, | |
204 | irot1,"ONLY"); | |
205 | gMC->Gspos("S01B",6,"S01M", -iChamber->RInner()-bpar[0] , 0,+zfpos, | |
206 | irot1,"ONLY"); | |
207 | gMC->Gspos("S01B",7,"S01M", 0, +iChamber->RInner()+bpar[0] ,+zfpos, | |
208 | irot2,"ONLY"); | |
209 | gMC->Gspos("S01B",8,"S01M", 0, -iChamber->RInner()-bpar[0] ,+zfpos, | |
210 | irot2,"ONLY"); | |
211 | ||
212 | gMC->Gspos("S02B",1,"S02M", +iChamber->RInner()+bpar[0] , 0,-zfpos, | |
213 | irot1,"ONLY"); | |
214 | gMC->Gspos("S02B",2,"S02M", -iChamber->RInner()-bpar[0] , 0,-zfpos, | |
215 | irot1,"ONLY"); | |
216 | gMC->Gspos("S02B",3,"S02M", 0, +iChamber->RInner()+bpar[0] ,-zfpos, | |
217 | irot2,"ONLY"); | |
218 | gMC->Gspos("S02B",4,"S02M", 0, -iChamber->RInner()-bpar[0] ,-zfpos, | |
219 | irot2,"ONLY"); | |
220 | gMC->Gspos("S02B",5,"S02M", +iChamber->RInner()+bpar[0] , 0,+zfpos, | |
221 | irot1,"ONLY"); | |
222 | gMC->Gspos("S02B",6,"S02M", -iChamber->RInner()-bpar[0] , 0,+zfpos, | |
223 | irot1,"ONLY"); | |
224 | gMC->Gspos("S02B",7,"S02M", 0, +iChamber->RInner()+bpar[0] ,+zfpos, | |
225 | irot2,"ONLY"); | |
226 | gMC->Gspos("S02B",8,"S02M", 0, -iChamber->RInner()-bpar[0] ,+zfpos, | |
227 | irot2,"ONLY"); | |
228 | } | |
229 | // | |
230 | // Chamber Material represented by Alu sheet | |
231 | tpar[0]= iChamber->RInner(); | |
232 | tpar[1]= iChamber->ROuter(); | |
233 | tpar[2] = (iChamber->DGas()+iChamber->DAlu())/2; | |
234 | gMC->Gsvolu("S01A", "TUBE", idAlu2, tpar, 3); | |
235 | gMC->Gsvolu("S02A", "TUBE",idAlu2, tpar, 3); | |
236 | gMC->Gspos("S01A", 1, "S01M", 0., 0., 0., 0, "ONLY"); | |
237 | gMC->Gspos("S02A", 1, "S02M", 0., 0., 0., 0, "ONLY"); | |
238 | // | |
239 | // Sensitive volumes | |
240 | // tpar[2] = iChamber->DGas(); | |
241 | tpar[2] = iChamber->DGas()/2; | |
242 | gMC->Gsvolu("S01G", "TUBE", idGas, tpar, 3); | |
243 | gMC->Gsvolu("S02G", "TUBE", idGas, tpar, 3); | |
244 | gMC->Gspos("S01G", 1, "S01A", 0., 0., 0., 0, "ONLY"); | |
245 | gMC->Gspos("S02G", 1, "S02A", 0., 0., 0., 0, "ONLY"); | |
246 | // | |
247 | // Frame Crosses to be placed inside gas | |
248 | // NONE: chambers are sensitive everywhere | |
249 | // if (frameCrosses) { | |
250 | ||
251 | // dr = (iChamber->ROuter() - iChamber->RInner()); | |
252 | // bpar[0] = TMath::Sqrt(dr*dr-dframep1*dframep1/4)/2; | |
253 | // bpar[1] = dframep1/2; | |
254 | // bpar[2] = iChamber->DGas()/2; | |
255 | // gMC->Gsvolu("S01F", "BOX", idAlu1, bpar, 3); | |
256 | // gMC->Gsvolu("S02F", "BOX", idAlu1, bpar, 3); | |
257 | ||
258 | // gMC->Gspos("S01F",1,"S01G", +iChamber->RInner()+bpar[0] , 0, 0, | |
259 | // irot1,"ONLY"); | |
260 | // gMC->Gspos("S01F",2,"S01G", -iChamber->RInner()-bpar[0] , 0, 0, | |
261 | // irot1,"ONLY"); | |
262 | // gMC->Gspos("S01F",3,"S01G", 0, +iChamber->RInner()+bpar[0] , 0, | |
263 | // irot2,"ONLY"); | |
264 | // gMC->Gspos("S01F",4,"S01G", 0, -iChamber->RInner()-bpar[0] , 0, | |
265 | // irot2,"ONLY"); | |
266 | ||
267 | // gMC->Gspos("S02F",1,"S02G", +iChamber->RInner()+bpar[0] , 0, 0, | |
268 | // irot1,"ONLY"); | |
269 | // gMC->Gspos("S02F",2,"S02G", -iChamber->RInner()-bpar[0] , 0, 0, | |
270 | // irot1,"ONLY"); | |
271 | // gMC->Gspos("S02F",3,"S02G", 0, +iChamber->RInner()+bpar[0] , 0, | |
272 | // irot2,"ONLY"); | |
273 | // gMC->Gspos("S02F",4,"S02G", 0, -iChamber->RInner()-bpar[0] , 0, | |
274 | // irot2,"ONLY"); | |
275 | // } | |
276 | } | |
277 | ||
278 | //______________________________________________________________________________ | |
279 | void AliMUONSt1GeometryBuilder::SetTransformations() | |
280 | { | |
281 | // Defines the transformations for the station2 chambers. | |
282 | // --- | |
283 | ||
284 | AliMUONChamber* iChamber1 = GetChamber(0); | |
285 | Double_t zpos1= - iChamber1->Z(); | |
286 | iChamber1->GetGeometry() | |
287 | ->SetTranslation(TGeoTranslation(0., 0., zpos1)); | |
288 | ||
289 | AliMUONChamber* iChamber2 = GetChamber(1); | |
290 | Double_t zpos2 = - iChamber2->Z(); | |
291 | iChamber2->GetGeometry() | |
292 | ->SetTranslation(TGeoTranslation(0., 0., zpos2)); | |
293 | } | |
294 | ||
295 | //______________________________________________________________________________ | |
296 | void AliMUONSt1GeometryBuilder::SetSensitiveVolumes() | |
297 | { | |
298 | // Defines the sensitive volumes for station1 chambers. | |
299 | // --- | |
300 | ||
301 | GetChamber(0)->GetGeometry()->SetSensitiveVolume("S01G"); | |
302 | GetChamber(1)->GetGeometry()->SetSensitiveVolume("S02G"); | |
303 | } |