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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 | /* |
17 | $Log$ |
54fba644 |
18 | Revision 1.1 2000/01/12 15:39:30 morsch |
19 | Standar version of ABSO |
20 | |
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21 | */ |
22 | |
23 | /////////////////////////////////////////////////////////////////////////////// |
24 | // // |
25 | // Muon ABSOrber // |
26 | // This class contains the description of the muon absorber geometry // |
27 | // // |
28 | //Begin_Html |
29 | /* |
30 | <img src="picts/AliABSOClass.gif"> |
31 | </pre> |
32 | <br clear=left> |
33 | <font size=+2 color=red> |
34 | <p>The responsible person for this module is |
35 | <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>. |
36 | </font> |
37 | <pre> |
38 | */ |
39 | //End_Html |
40 | // // |
41 | // // |
42 | /////////////////////////////////////////////////////////////////////////////// |
43 | |
44 | #include "AliABSOv0.h" |
45 | #include "AliRun.h" |
46 | #include "AliConst.h" |
47 | |
48 | ClassImp(AliABSOv0) |
49 | |
50 | //_____________________________________________________________________________ |
51 | AliABSOv0::AliABSOv0() |
52 | { |
53 | // |
54 | // Default constructor |
55 | // |
56 | } |
57 | |
58 | //_____________________________________________________________________________ |
59 | AliABSOv0::AliABSOv0(const char *name, const char *title) |
60 | : AliABSO(name,title) |
61 | { |
62 | // |
63 | // Standard constructor |
64 | // |
65 | SetMarkerColor(7); |
66 | SetMarkerStyle(2); |
67 | SetMarkerSize(0.4); |
68 | } |
69 | |
70 | //_____________________________________________________________________________ |
71 | void AliABSOv0::CreateGeometry() |
72 | { |
73 | // |
74 | // Creation of the geometry of the muon absorber |
75 | // |
76 | //Begin_Html |
77 | /* |
78 | <img src="picts/AliABSOv0Tree.gif"> |
79 | */ |
80 | //End_Html |
81 | //Begin_Html |
82 | /* |
83 | <img src="picts/AliABSOv0.gif"> |
84 | */ |
85 | //End_Html |
86 | |
87 | |
88 | Int_t *idtmed = fIdtmed->GetArray()-1599; |
89 | |
90 | Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3]; |
91 | Float_t dz; |
92 | #include "ShieldConst.h" |
93 | // Mother volume and outer shielding: Pb |
94 | |
95 | par[0] = 0.; |
96 | par[1] = 360.; |
97 | par[2] = 7.; |
98 | |
99 | par[3] = -(abs_l-abs_d)/2.; |
100 | par[4] = r_abs; |
101 | par[5] = abs_d * TMath::Tan(theta1); |
102 | |
103 | par[6] = par[3]+(z_nose-abs_d); |
104 | par[7] = r_abs; |
105 | par[8] = z_nose * TMath::Tan(theta1); |
106 | |
107 | par[9] = par[3]+(z_cone-abs_d); |
108 | par[10] = r_abs; |
109 | par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2); |
110 | |
111 | par[12] = par[3]+(abs_c-abs_d); |
112 | par[13] = r_abs; |
113 | par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max); |
114 | |
115 | par[15] = par[3]+(abs_l-d_rear-abs_d); |
116 | par[16] = r_abs + (par[15] - par[12]) * TMath::Tan(theta_open1) ; |
117 | par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(acc_max); |
118 | |
119 | par[18] = par[3]+(abs_l-d_rear-abs_d); |
120 | par[19] = (abs_l-d_rear) * TMath::Tan(acc_min); |
121 | par[20] = par[14] + (par[15] - par[12]) * TMath::Tan(acc_max); |
122 | |
123 | par[21] = -par[3]; |
124 | par[22] = abs_l* TMath::Tan(acc_min); |
125 | par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(acc_max); |
126 | gMC->Gsvolu("ABSS", "PCON", idtmed[1612], par, 24); |
127 | for (Int_t i=4; i<24; i+=3) par[i] = 0; |
128 | gMC->Gsvolu("ABSM", "PCON", idtmed[1655], par, 24); |
129 | gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY"); |
130 | |
131 | // |
132 | // Steel envelope |
133 | // |
134 | par[4] = par[5] -d_steel; |
135 | par[7] = par[8] -d_steel; |
136 | par[10]= par[11]-d_steel; |
137 | par[13]= par[14]-d_steel; |
138 | par[16]= par[17]-d_steel; |
139 | par[19]= par[20]-d_steel; |
140 | par[22]= par[23]-d_steel; |
141 | gMC->Gsvolu("ABST", "PCON", idtmed[1618], par, 24); |
142 | gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY"); |
143 | // |
144 | // Polyethylene shield |
145 | // |
146 | cpar[0] = (abs_l - z_cone) / 2.; |
147 | cpar[1] = z_cone * TMath::Tan(acc_max); |
148 | cpar[2] = cpar[1] + d_poly; |
149 | cpar[3] = abs_l * TMath::Tan(acc_max); |
150 | cpar[4] = cpar[3] + d_poly; |
151 | gMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar, 5); |
152 | dz = (abs_l-abs_d)/2.-cpar[0]; |
153 | gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY"); |
154 | |
155 | // |
156 | // Tungsten nose to protect TPC |
157 | // |
158 | cpar[0] = (z_nose - abs_d) / 2.; |
159 | cpar[1] = abs_d * TMath::Tan(acc_max); |
160 | cpar[2] = abs_d * TMath::Tan(theta1)-d_steel; |
161 | cpar[3] = z_nose * TMath::Tan(acc_max); |
162 | cpar[4] = z_nose * TMath::Tan(theta1)-d_steel; |
163 | gMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar, 5); |
164 | // |
165 | dz = -(abs_l-abs_d)/2.+cpar[0]; |
166 | gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY"); |
167 | // |
168 | // Tungsten inner shield |
169 | // |
170 | cpar[0] = (abs_l-d_rear - abs_c)/ 2.; |
171 | cpar[1] = r_abs; |
172 | cpar[2] = abs_c * TMath::Tan(acc_min); |
173 | cpar[3] = r_abs + 2. * cpar[0] * TMath::Tan(theta_open1); |
174 | cpar[4] = (abs_l-d_rear) * TMath::Tan(acc_min); |
175 | gMC->Gsvolu("AWIN", "CONE", idtmed[1651], cpar, 5); |
176 | // |
177 | dz = (abs_l-abs_d)/2.-cpar[0]-d_rear; |
178 | gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY"); |
179 | |
180 | // Inner tracking region |
181 | // |
182 | // mother volume: Pb |
183 | // |
184 | pcpar[0] = 0.; |
185 | pcpar[1] = 360.; |
186 | pcpar[2] = 3.; |
187 | pcpar[3] = -(abs_l-abs_d)/2.; |
188 | pcpar[4] = r_abs; |
189 | pcpar[5] = abs_d * TMath::Tan(acc_max); |
190 | pcpar[6] = pcpar[3]+(z_2deg-abs_d); |
191 | pcpar[7] = r_abs; |
192 | pcpar[8] = z_2deg * TMath::Tan(acc_max); |
193 | pcpar[9] = -par[3]; |
194 | pcpar[10] = abs_l * TMath::Tan(acc_min); |
195 | pcpar[11] = abs_l * TMath::Tan(acc_max); |
196 | gMC->Gsvolu("AITR", "PCON", idtmed[1612], pcpar, 12); |
197 | // |
198 | // special Pb medium for last 5 cm of Pb |
199 | zr=abs_l-5; |
200 | cpar[0] = 2.5; |
201 | cpar[1] = zr * TMath::Tan(theta_r); |
202 | cpar[2] = zr * TMath::Tan(acc_max); |
203 | cpar[3] = cpar[1] + TMath::Tan(acc_min) * 5; |
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204 | cpar[4] = cpar[2] + TMath::Tan(acc_max) * 5; |
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205 | gMC->Gsvolu("ARPB", "CONE", idtmed[1632], cpar, 5); |
206 | dz=(abs_l-abs_d)/2.-cpar[0]; |
207 | gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY"); |
208 | |
209 | // |
210 | // concrete cone: concrete |
211 | // |
212 | pcpar[9] = par[3]+(abs_l-d_rear-abs_d); |
213 | pcpar[10] = (abs_l-d_rear) * TMath::Tan(acc_min); |
214 | pcpar[11] = (abs_l-d_rear) * TMath::Tan(acc_max); |
215 | gMC->Gsvolu("ACON", "PCON", idtmed[1616], pcpar, 12); |
216 | gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY"); |
217 | // |
218 | // carbon cone: carbon |
219 | // |
220 | pcpar[9] = pcpar[3]+(abs_cc-abs_d); |
221 | pcpar[10] = abs_cc * TMath::Tan(acc_min); |
222 | pcpar[11] = abs_cc * TMath::Tan(acc_max); |
223 | gMC->Gsvolu("ACAR", "PCON", idtmed[1605], pcpar, 12); |
224 | gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY"); |
225 | // |
226 | // inner W shield |
227 | zr=abs_l-d_rear; |
228 | cpar[0] = d_rear/2.; |
229 | cpar[1] = zr * TMath::Tan(acc_min); |
230 | cpar[2] = zr * TMath::Tan(theta_r); |
231 | cpar[3] = cpar[1] + TMath::Tan(acc_min) * 35; |
232 | cpar[4] = cpar[2] + TMath::Tan(theta_r) * 35; |
233 | gMC->Gsvolu("ARW0", "CONE", idtmed[1611], cpar, 5); |
234 | dz=(abs_l-abs_d)/2.-cpar[0]; |
235 | gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY"); |
236 | // |
237 | // special W medium for last 5 cm of W |
238 | zr=abs_l-5; |
239 | cpar[0] = 2.5; |
240 | cpar[1] = zr * TMath::Tan(acc_min); |
241 | cpar[2] = zr * TMath::Tan(theta_r); |
242 | cpar[3] = cpar[1] + TMath::Tan(acc_min) * 5.; |
243 | cpar[4] = cpar[2] + TMath::Tan(theta_r) * 5.; |
244 | gMC->Gsvolu("ARW1", "CONE", idtmed[1631], cpar, 5); |
245 | dz=d_rear/2.-cpar[0]; |
246 | gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY"); |
247 | // |
248 | // PolyEthylene Layers |
249 | Float_t dr_min=TMath::Tan(theta_r) * 5; |
250 | Float_t dr_max=TMath::Tan(acc_max) * 5; |
251 | gMC->Gsvolu("ARPE", "CONE", idtmed[1617], cpar, 0); |
252 | cpar[0]=2.5; |
253 | for (Int_t i=0; i<3; i++) { |
254 | zr=abs_l-d_rear+5+i*10.; |
255 | cpar[1] = zr * TMath::Tan(theta_r); |
256 | cpar[2] = zr * TMath::Tan(acc_max); |
257 | cpar[3] = cpar[1] + dr_min; |
258 | cpar[4] = cpar[2] + dr_max; |
259 | dz=(abs_l-abs_d)/2.-cpar[0]-5.-(2-i)*10; |
260 | gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5); |
261 | } |
262 | gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY"); |
263 | dz = (abs_l-abs_d)/2.+abs_d; |
264 | gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY"); |
265 | // |
266 | // |
267 | // vacuum system |
268 | // |
269 | // pipe and heating jackets |
270 | // |
271 | // |
272 | // cylindrical piece |
273 | tpar0[2]=(abs_c-abs_d)/2; |
274 | tpar0[0]=r_vacu; |
275 | tpar0[1]=r_abs; |
276 | gMC->Gsvolu("AV11", "TUBE", idtmed[1658], tpar0, 3); |
277 | // |
278 | // insulation |
279 | tpar[2]=tpar0[2]; |
280 | tpar[0]=tpar0[0]+d_tube; |
281 | tpar[1]=tpar0[0]+d_tube+d_insu; |
282 | gMC->Gsvolu("AI11", "TUBE", idtmed[1653], tpar, 3); |
283 | gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY"); |
284 | // |
285 | // clearance |
286 | tpar[0]=tpar0[1]-d_prot-d_free; |
287 | tpar[1]=tpar0[1]-d_prot; |
288 | gMC->Gsvolu("AP11", "TUBE", idtmed[1655], tpar, 3); |
289 | gMC->Gspos("AP11", 1, "AV11", 0., 0., 0., 0, "ONLY"); |
290 | |
291 | dz=-(abs_l-abs_d)/2.+tpar0[2]; |
292 | gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY"); |
293 | |
294 | // |
295 | // conical piece |
296 | cpar0[0]=(abs_l-d_rear-abs_c)/2; |
297 | cpar0[1]=r_vacu; |
298 | cpar0[2]=r_abs; |
299 | cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open1); |
300 | cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open1); |
301 | gMC->Gsvolu("AV21", "CONE", idtmed[1658], cpar0, 5); |
302 | // |
303 | // insulation |
304 | cpar[0]=cpar0[0]; |
305 | cpar[1]=cpar0[1]+d_tube; |
306 | cpar[2]=cpar0[1]+d_tube+d_insu; |
307 | cpar[3]=cpar0[3]+d_tube; |
308 | cpar[4]=cpar0[3]+d_tube+d_insu; |
309 | gMC->Gsvolu("AI21", "CONE", idtmed[1653], cpar, 5); |
310 | gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY"); |
311 | // |
312 | // clearance |
313 | cpar[1]=cpar0[2]-d_prot-d_free; |
314 | cpar[2]=cpar0[2]-d_prot; |
315 | cpar[3]=cpar0[4]-d_prot-d_free; |
316 | cpar[4]=cpar0[4]-d_prot; |
317 | gMC->Gsvolu("AP21", "CONE", idtmed[1655], cpar, 5); |
318 | gMC->Gspos("AP21", 1, "AV21", 0., 0., 0., 0, "ONLY"); |
319 | |
320 | dz=(abs_l-abs_d)/2.-cpar0[0]-d_rear; |
321 | gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY"); |
322 | |
323 | } |
324 | |
325 | //_____________________________________________________________________________ |
326 | |
327 | void AliABSOv0::Init() |
328 | { |
329 | // |
330 | // Initialisation of the muon absorber after it has been built |
331 | Int_t i; |
332 | // |
333 | printf("\n"); |
334 | for(i=0;i<35;i++) printf("*"); |
335 | printf(" ABSOv0_INIT "); |
336 | for(i=0;i<35;i++) printf("*"); |
337 | printf("\n"); |
338 | // |
339 | for(i=0;i<80;i++) printf("*"); |
340 | printf("\n"); |
341 | } |
342 | |
343 | |
344 | |
345 | |
346 | |
347 | |
348 | |
349 | |
350 | |
351 | |