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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 | // $Id$ | |
17 | ||
18 | //----------------------------------------------------------------------------- | |
19 | // Class AliMUONSt2GeometryBuilder | |
20 | // ------------------------------- | |
21 | // MUON Station2 coarse geometry construction class. | |
22 | // Extracted from AliMUONv1 | |
23 | // Dummy version of station 2 with the right DE id (Ch. Finck) | |
24 | //----------------------------------------------------------------------------- | |
25 | ||
26 | #include <TVirtualMC.h> | |
27 | #include <TGeoMatrix.h> | |
28 | #include <TArrayI.h> | |
29 | ||
30 | #include "AliLog.h" | |
31 | ||
32 | #include "AliMUONSt2GeometryBuilder.h" | |
33 | #include "AliMUON.h" | |
34 | #include "AliMUONConstants.h" | |
35 | #include "AliMUONGeometryModule.h" | |
36 | #include "AliMUONGeometryEnvelopeStore.h" | |
37 | ||
38 | /// \cond CLASSIMP | |
39 | ClassImp(AliMUONSt2GeometryBuilder) | |
40 | /// \endcond | |
41 | ||
42 | //______________________________________________________________________________ | |
43 | AliMUONSt2GeometryBuilder::AliMUONSt2GeometryBuilder(AliMUON* muon) | |
44 | : AliMUONVGeometryBuilder(2, 2), | |
45 | fMUON(muon) | |
46 | { | |
47 | /// Standard constructor | |
48 | ||
49 | } | |
50 | ||
51 | //______________________________________________________________________________ | |
52 | AliMUONSt2GeometryBuilder::AliMUONSt2GeometryBuilder() | |
53 | : AliMUONVGeometryBuilder(), | |
54 | fMUON(0) | |
55 | { | |
56 | /// Default constructor | |
57 | } | |
58 | ||
59 | ||
60 | //______________________________________________________________________________ | |
61 | AliMUONSt2GeometryBuilder::~AliMUONSt2GeometryBuilder() | |
62 | { | |
63 | /// Destructor | |
64 | } | |
65 | ||
66 | // | |
67 | // public methods | |
68 | // | |
69 | ||
70 | //______________________________________________________________________________ | |
71 | void AliMUONSt2GeometryBuilder::CreateGeometry() | |
72 | { | |
73 | /// From AliMUONv1::CreateGeometry() | |
74 | ||
75 | // | |
76 | //******************************************************************** | |
77 | // Station 2 ** | |
78 | //******************************************************************** | |
79 | // indices 1 and 2 for first and second chambers in the station | |
80 | // iChamber (first chamber) kept for other quanties than Z, | |
81 | // assumed to be the same in both chambers | |
82 | ||
83 | // Get tracking medias Ids | |
84 | Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099; | |
85 | Int_t idAir= idtmed[1100]; // medium 1 | |
86 | // Int_t idAlu1=idtmed[1103]; // medium 4 | |
87 | // Int_t idAlu2=idtmed[1104]; // medium 5 | |
88 | Int_t idGas=idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%) | |
89 | ||
90 | const Float_t kDeltaQuad = 0.01;//2.6; dummy value til we find the good value | |
91 | const Float_t kDeltaZ = 6.5/2.; | |
92 | ||
93 | // Rotation matrices in the x-y plane | |
94 | // phi= 0 deg | |
95 | Int_t irot1; | |
96 | fMUON->AliMatrix(irot1, 90., 0., 90., 90., 0., 0.); | |
97 | // phi= 90 deg | |
98 | Int_t irot2; | |
99 | fMUON->AliMatrix(irot2, 90., 90., 90., 180., 0., 0.); | |
100 | ||
101 | // Half of the total thickness of frame crosses (including DAlu) | |
102 | // for each chamber in stations 1 and 2: | |
103 | // 3% of X0 of composite material, | |
104 | // but taken as Aluminium here, with same thickness in number of X0 | |
105 | // Float_t dframez = 3. * 8.9 / 100; | |
106 | // DGas and DAlu not changed from standard values | |
107 | // Double_t zfpos=-(iChamber->DGas()+dframez+iChamber->DAlu())/2; | |
108 | // The same parameters are defined in builder for station 1 | |
109 | ||
110 | // sensitive gas gap | |
111 | const Float_t kDGas = 0.5; | |
112 | ||
113 | // 3% radiation length of aluminum (X0=8.9 cm) | |
114 | // const Float_t kDAlu = 3.5 * 8.9 / 100.; | |
115 | ||
116 | // Mother volume | |
117 | // Outer excess and inner recess for mother volume radius | |
118 | // with respect to ROuter and RInner | |
119 | // Float_t dframep=.001; // Value for station 3 should be 6 ... | |
120 | // Width (RdPhi) of the frame crosses for stations 1 and 2 (cm) | |
121 | // Float_t dframep1=.001; | |
122 | // Float_t phi=2*TMath::Pi()/12/2; | |
123 | // The same parameters are defined in builder for station 1 (30deg) | |
124 | ||
125 | Float_t tpar[5]; | |
126 | // Double_t dstation = (-iChamber2->Z()) - (-iChamber1->Z()); | |
127 | ||
128 | ||
129 | Float_t posx, posy, posz; | |
130 | // Chamber Material represented by Alu sheet | |
131 | tpar[0]= AliMUONConstants::Rmin(1); | |
132 | tpar[1]= AliMUONConstants::Rmax(1); | |
133 | tpar[2] = kDGas/2; | |
134 | tpar[3] = 0.; | |
135 | tpar[4] = 90.; | |
136 | ||
137 | // | |
138 | // Sensitive volumes | |
139 | gMC->Gsvolu("S03G", "TUBS", idGas, tpar, 5); | |
140 | gMC->Gsvolu("S04G", "TUBS", idGas, tpar, 5); | |
141 | ||
142 | Int_t detElemId; | |
143 | ||
144 | posx = kDeltaQuad; | |
145 | posy = kDeltaQuad; | |
146 | posz = -kDeltaZ; | |
147 | ||
148 | detElemId = 301; | |
149 | gMC->Gsvolu("LE01", "TUBS", idAir, tpar, 5); | |
150 | GetEnvelopes(2)->AddEnvelope("LE01", detElemId, true, TGeoTranslation(posx, posy, posz), | |
151 | TGeoRotation("rot1",90,0,90,90,0,0) ); | |
152 | detElemId = 401; | |
153 | gMC->Gsvolu("LF01", "TUBS", idAir, tpar, 5); | |
154 | GetEnvelopes(3)->AddEnvelope("LF01", detElemId, true, TGeoTranslation(posx, posy, posz), | |
155 | TGeoRotation("rot1",90,0,90,90,0,0) ); | |
156 | detElemId = 300; | |
157 | gMC->Gsvolu("LE02", "TUBS", idAir, tpar, 5); | |
158 | GetEnvelopes(2)->AddEnvelope("LE02", detElemId, true, TGeoTranslation(-posx, posy,-posz), | |
159 | TGeoRotation("rot2",90,180,90,90,180,0) ); | |
160 | detElemId = 400; | |
161 | gMC->Gsvolu("LF02", "TUBS", idAir, tpar, 5); | |
162 | GetEnvelopes(3)->AddEnvelope("LF02", detElemId, true, TGeoTranslation(-posx, posy,-posz), | |
163 | TGeoRotation("rot2",90,180,90,90,180,0) ); | |
164 | detElemId = 302; | |
165 | gMC->Gsvolu("LE03", "TUBS", idAir, tpar, 5); | |
166 | GetEnvelopes(2)->AddEnvelope("LE03", detElemId, true, TGeoTranslation(posx, -posy, -posz), | |
167 | TGeoRotation("rot3",90,0,90,270,180,0) ); | |
168 | detElemId = 402; | |
169 | gMC->Gsvolu("LF03", "TUBS", idAir, tpar, 5); | |
170 | GetEnvelopes(3)->AddEnvelope("LF03", detElemId, true, TGeoTranslation(posx, -posy, -posz), | |
171 | TGeoRotation("rot3",90,0,90,270,180,0) ); | |
172 | detElemId = 303; | |
173 | gMC->Gsvolu("LE04", "TUBS", idAir, tpar, 5); | |
174 | GetEnvelopes(2)->AddEnvelope("LE04", detElemId, true, TGeoTranslation(-posx, -posy, posz), | |
175 | TGeoRotation("rot4",90,180,90,270,0,0) ); | |
176 | detElemId = 403; | |
177 | gMC->Gsvolu("LF04", "TUBS", idAir, tpar, 5); | |
178 | GetEnvelopes(3)->AddEnvelope("LF04", detElemId, true, TGeoTranslation(-posx, -posy, posz), | |
179 | TGeoRotation("rot4",90,180,90,270,0,0) ); | |
180 | ||
181 | GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE01", 1); | |
182 | GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF01", 1); | |
183 | ||
184 | GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE02", 2); | |
185 | GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF02", 2); | |
186 | ||
187 | GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE03", 3); | |
188 | GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF03", 3); | |
189 | ||
190 | GetEnvelopes(2)->AddEnvelopeConstituent("S03G", "LE04", 4); | |
191 | GetEnvelopes(3)->AddEnvelopeConstituent("S04G", "LF04", 4); | |
192 | } | |
193 | ||
194 | //______________________________________________________________________________ | |
195 | void AliMUONSt2GeometryBuilder::SetVolumes() | |
196 | { | |
197 | /// Defines the volumes for the station2 chambers. | |
198 | ||
199 | // Define chamber volumes as virtual | |
200 | SetVolume(2, "SC03", true); | |
201 | SetVolume(3, "SC04", true); | |
202 | } | |
203 | ||
204 | //______________________________________________________________________________ | |
205 | void AliMUONSt2GeometryBuilder::SetTransformations() | |
206 | { | |
207 | /// Defines the transformations for the station2 chambers. | |
208 | ||
209 | Double_t zpos1 = - AliMUONConstants::DefaultChamberZ(2); | |
210 | SetTranslation(2, TGeoTranslation(0., 0., zpos1)); | |
211 | ||
212 | Double_t zpos2 = - AliMUONConstants::DefaultChamberZ(3); | |
213 | SetTranslation(3, TGeoTranslation(0., 0., zpos2)); | |
214 | } | |
215 | ||
216 | //______________________________________________________________________________ | |
217 | void AliMUONSt2GeometryBuilder::SetSensitiveVolumes() | |
218 | { | |
219 | /// Defines the sensitive volumes for station2 chambers. | |
220 | ||
221 | GetGeometry(2)->SetSensitiveVolume("S03G"); | |
222 | GetGeometry(3)->SetSensitiveVolume("S04G"); | |
223 | } |