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fe4da5cc | 1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // // | |
3 | // Muon ABSOrber // | |
4 | // This class contains the description of the muon absorber geometry // | |
5 | // // | |
6 | //Begin_Html | |
7 | /* | |
8 | <img src="gif/AliABSOClass.gif"> | |
9 | </pre> | |
10 | <br clear=left> | |
11 | <font size=+2 color=red> | |
12 | <p>The responsible person for this module is | |
13 | <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>. | |
14 | </font> | |
15 | <pre> | |
16 | */ | |
17 | //End_Html | |
18 | // // | |
19 | // // | |
20 | /////////////////////////////////////////////////////////////////////////////// | |
21 | ||
22 | #include "AliABSO.h" | |
23 | #include "AliRun.h" | |
fe4da5cc | 24 | #include "AliConst.h" |
25 | ||
26 | ClassImp(AliABSO) | |
27 | ||
28 | //_____________________________________________________________________________ | |
29 | AliABSO::AliABSO() | |
30 | { | |
31 | // | |
32 | // Default constructor | |
33 | // | |
34 | } | |
35 | ||
36 | //_____________________________________________________________________________ | |
37 | AliABSO::AliABSO(const char *name, const char *title) | |
b8032157 | 38 | : AliModule(name,title) |
fe4da5cc | 39 | { |
40 | // | |
41 | // Standard constructor | |
42 | // | |
43 | SetMarkerColor(7); | |
44 | SetMarkerStyle(2); | |
45 | SetMarkerSize(0.4); | |
46 | } | |
47 | ||
fe4da5cc | 48 | //_____________________________________________________________________________ |
49 | void AliABSO::CreateGeometry() | |
50 | { | |
51 | // | |
52 | // Creation of the geometry of the muon absorber | |
53 | // | |
54 | //Begin_Html | |
55 | /* | |
56 | <img src="gif/AliABSOTree.gif"> | |
57 | */ | |
58 | //End_Html | |
59 | //Begin_Html | |
60 | /* | |
61 | <img src="gif/AliABSO.gif"> | |
62 | */ | |
63 | //End_Html | |
64 | ||
65 | AliMC* pMC = AliMC::GetMC(); | |
66 | ||
67 | Int_t *idtmed = gAlice->Idtmed(); | |
68 | ||
69 | Float_t d_pb, cpar[5], dpar[12], tpar[3], zpos, | |
70 | cpar1[5], cpar2[5], cpar3[5], cpar4[5], cpar5[12], | |
71 | cpar7[5], cpar8[5], cpar9[5], abs_c, abs_d, | |
72 | abs_l, cpar10[5], r_abs; | |
73 | Float_t theta1, theta2, abs_cc, d_rear, dz, zr, | |
74 | z_cone, d_poly, z_nose, theta_open; | |
75 | Float_t acc_min, acc_max, par[50], d_steel, z_w, | |
76 | theta_r, epsilon; | |
77 | // | |
78 | abs_d = 90.; // DEFINES DRIFT LENGTH | |
79 | z_nose = 102.; | |
80 | z_cone = 285.; | |
81 | theta1 = 24.; // 1. angle defining the front absorber | |
82 | theta2 = 5.; // 2. angle defining the front absorbe | |
83 | acc_max = 9.; // ANGLE POLAIRE MAXIMUM | |
84 | acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION | |
85 | abs_l = 503.; | |
86 | d_steel = 1.; // THICKNESS OF STEEL SUPPORT | |
87 | d_poly = 7.5; | |
88 | d_pb = 2.5; | |
89 | abs_cc = 315.; // DEFINES LENGTH OF CARBON | |
90 | abs_c = 358.; | |
91 | //abs_s = 150.; // DEFINES W-SHIELD LENGTH | |
92 | //abs_n = 80.; // START OF NOSE | |
93 | r_abs = 4.; | |
94 | //r_pb = .1; | |
95 | epsilon = .01; | |
96 | theta_r = 3.; | |
97 | d_rear = 35.; | |
98 | theta_open = .75; | |
99 | // | |
100 | //z_l3 = 700.; | |
101 | //zmag_in = 725.; | |
102 | //zmag_out = 1225.; | |
103 | //zfil_in = 1471.; | |
104 | //zfil_out = 1591.; | |
105 | //zcon_in = 1900.; | |
106 | //zcon_out = 2e3; | |
107 | //zcone_e = 859.0875; | |
108 | //spec_l = 1800.; | |
109 | //zplug_in = 1780.; | |
110 | //zplug_out= 1900.; | |
111 | // | |
112 | // Chamber position | |
113 | // CZ1=515.5 | |
114 | //cz1 = 511.; | |
115 | //cz2 = 686.; | |
116 | //cz3 = 971.; | |
117 | //cz4 = 1245.; | |
118 | //cz5 = 1445.; | |
119 | //cz6 = 1610.; | |
120 | //cz7 = 1710.; | |
121 | // | |
122 | // --- Outer shape of front absorber | |
123 | par[0] = 0.; | |
124 | par[1] = 360.; | |
125 | par[2] = 4.; | |
126 | par[3] = abs_d; | |
127 | par[4] = 0.; | |
128 | par[5] = abs_d * TMath::Tan(theta1 * kDegrad); | |
129 | par[6] = z_nose; | |
130 | par[7] = 0.; | |
131 | par[8] = par[6] * TMath::Tan(theta1 * kDegrad); | |
132 | par[9] = z_cone; | |
133 | par[10] = 0.; | |
134 | par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2 * kDegrad); | |
135 | par[12] = abs_l; | |
136 | par[13] = 0.; | |
137 | par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max * kDegrad); | |
138 | pMC->Gsvolu("ABSM", "PCON", idtmed[1605], par, 15); | |
139 | // | |
140 | // --- Now define all elements of the absorber | |
141 | // | |
142 | // TUNGSTEN NOSE SEGMENT BETWEEN Z=90 AND 112 CM | |
143 | // SHAPED ALONG A 24 DEG LINE | |
144 | // | |
145 | cpar1[0] = (z_nose - abs_d) / 2.; | |
146 | cpar1[1] = abs_d * TMath::Tan(acc_max * kDegrad) + d_steel; | |
147 | cpar1[2] = abs_d * TMath::Tan(theta1 * kDegrad); | |
148 | cpar1[3] = z_nose * TMath::Tan(acc_max * kDegrad) + d_steel; | |
149 | cpar1[4] = z_nose * TMath::Tan(theta1 * kDegrad); | |
150 | pMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar1, 5); | |
151 | // | |
152 | dz = cpar1[0] + abs_d; | |
153 | pMC->Gspos("ANOS", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
154 | // | |
155 | // IRON SUPPORT STRUCTURE | |
156 | // | |
157 | cpar2[0] = (abs_l - abs_d) / 2.; | |
158 | cpar2[1] = abs_d * TMath::Tan(acc_max * kDegrad); | |
159 | cpar2[2] = cpar2[1] + d_steel; | |
160 | cpar2[3] = abs_l * TMath::Tan(acc_max * kDegrad); | |
161 | cpar2[4] = cpar2[3] + d_steel; | |
162 | pMC->Gsvolu("ASST", "CONE", idtmed[1658], cpar2, 5); | |
163 | dz = cpar2[0] + abs_d; | |
164 | pMC->Gspos("ASST", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
165 | // | |
166 | // PB FRONT SHIELD INNER SEGMENT, ALSO POLYETHYLENE WAS | |
167 | // CONSIDERED FOR THIS REGION | |
168 | // | |
169 | cpar3[0] = (z_cone - z_nose) / 2.; | |
170 | cpar3[1] = cpar1[3]; | |
171 | cpar3[2] = cpar1[3] + d_poly; | |
172 | cpar3[3] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel; | |
173 | cpar3[4] = cpar3[3] + d_poly; | |
174 | pMC->Gsvolu("AWFS", "CONE", idtmed[1652], cpar3, 5); | |
175 | dz = cpar3[0] + z_nose; | |
176 | pMC->Gspos("AWFS", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
177 | // | |
178 | // PB OUTER SURFACE | |
179 | // | |
180 | cpar5[0] = 0.; | |
181 | cpar5[1] = 360.; | |
182 | cpar5[2] = 3.; | |
183 | cpar5[3] = z_nose; | |
184 | cpar5[4] = z_nose * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly; | |
185 | cpar5[5] = z_nose * TMath::Tan(theta1 * kDegrad); | |
186 | cpar5[6] = z_cone; | |
187 | cpar5[7] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly; | |
188 | cpar5[8] = cpar5[7] + d_pb; | |
189 | cpar5[9] = abs_l; | |
190 | cpar5[10] = abs_l * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly; | |
191 | cpar5[11] = cpar5[10] + d_pb; | |
192 | pMC->Gsvolu("APBS", "PCON", idtmed[1612], cpar5, 12); | |
193 | dz = 0.; | |
194 | pMC->Gspos("APBS", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
195 | // | |
196 | // POLYETHYLEN LAYER | |
197 | // | |
198 | cpar4[0] = (abs_l - z_cone) / 2.; | |
199 | cpar4[1] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel; | |
200 | cpar4[2] = cpar4[1] + d_poly; | |
201 | cpar4[3] = abs_l * TMath::Tan(acc_max * kDegrad) + d_steel; | |
202 | cpar4[4] = cpar4[3] + d_poly; | |
203 | pMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar4, 5); | |
204 | dz = cpar4[0] + z_cone; | |
205 | pMC->Gspos("APOL", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
206 | // | |
207 | // LEAD INNER SHIELD (inner radius const up to z=abs_c) | |
208 | // | |
209 | z_w = r_abs / TMath::Tan(acc_min * kDegrad); | |
210 | cpar8[0] = (abs_c - z_w) / 2.; | |
211 | cpar8[1] = r_abs; | |
212 | cpar8[2] = r_abs + epsilon; | |
213 | cpar8[3] = r_abs; | |
214 | cpar8[4] = abs_c * TMath::Tan(acc_min * kDegrad); | |
215 | pMC->Gsvolu("AWI1", "CONE", idtmed[1652], cpar8, 5); | |
216 | dz = cpar8[0] + z_w; | |
217 | pMC->Gspos("AWI1", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
218 | // | |
219 | // TUNGSTEN OPENING CONE UP TO THE END | |
220 | // | |
221 | cpar8[0] = (abs_l - abs_c) / 2.; | |
222 | cpar8[1] = r_abs; | |
223 | cpar8[2] = abs_c * TMath::Tan(acc_min * kDegrad); | |
224 | cpar8[3] = cpar8[1] + cpar8[0] * 2. * TMath::Tan(theta_open * kDegrad); | |
225 | cpar8[4] = abs_l * TMath::Tan(acc_min * kDegrad); | |
226 | pMC->Gsvolu("AWI2", "CONE", idtmed[1651], cpar8, 5); | |
227 | dz = cpar8[0] + abs_c; | |
228 | pMC->Gspos("AWI2", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
229 | // | |
230 | // CONCRETE CONE | |
231 | // | |
232 | cpar7[0] = (abs_l - d_rear - abs_cc) / 2.; | |
233 | cpar7[1] = abs_cc * TMath::Tan(acc_min * kDegrad); | |
234 | cpar7[2] = abs_cc * TMath::Tan(acc_max * kDegrad); | |
235 | cpar7[3] = (abs_l - d_rear) * TMath::Tan(acc_min * kDegrad); | |
236 | cpar7[4] = (abs_l - d_rear) * TMath::Tan(acc_max * kDegrad); | |
237 | pMC->Gsvolu("ACON", "CONE", idtmed[1656], cpar7, 5); | |
238 | dz = cpar7[0] + abs_cc; | |
239 | pMC->Gspos("ACON", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
240 | // | |
241 | // REAR SHIELD | |
242 | // | |
243 | zr = abs_l - d_rear; | |
244 | cpar9[0] = 2.5; | |
245 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
246 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
247 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
248 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
249 | pMC->Gsvolu("ARE1", "CONE", idtmed[1652], cpar9, 5); | |
250 | dz = cpar9[0] + zr; | |
251 | zr += 5.; | |
252 | pMC->Gspos("ARE1", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
253 | // | |
254 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
255 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
256 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
257 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
258 | pMC->Gsvolu("ARE2", "CONE", idtmed[1657], cpar9, 5); | |
259 | dz = cpar9[0] + zr; | |
260 | zr += 5.; | |
261 | pMC->Gspos("ARE2", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
262 | // | |
263 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
264 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
265 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
266 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
267 | pMC->Gsvolu("ARE3", "CONE", idtmed[1652], cpar9, 5); | |
268 | dz = cpar9[0] + zr; | |
269 | zr += 5.; | |
270 | pMC->Gspos("ARE3", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
271 | // | |
272 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
273 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
274 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
275 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
276 | pMC->Gsvolu("ARE4", "CONE", idtmed[1657], cpar9, 5); | |
277 | dz = cpar9[0] + zr; | |
278 | zr += 5.; | |
279 | pMC->Gspos("ARE4", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
280 | // | |
281 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
282 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
283 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
284 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
285 | pMC->Gsvolu("ARE5", "CONE", idtmed[1652], cpar9, 5); | |
286 | dz = cpar9[0] + zr; | |
287 | zr += 5.; | |
288 | pMC->Gspos("ARE5", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
289 | // | |
290 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
291 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
292 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
293 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
294 | pMC->Gsvolu("ARE6", "CONE", idtmed[1657], cpar9, 5); | |
295 | dz = cpar9[0] + zr; | |
296 | zr += 5.; | |
297 | pMC->Gspos("ARE6", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
298 | // | |
299 | cpar9[1] = zr * TMath::Tan(theta_r * kDegrad); | |
300 | cpar9[2] = zr * TMath::Tan(acc_max * kDegrad); | |
301 | cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.; | |
302 | cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.; | |
303 | pMC->Gsvolu("ARE7", "CONE", idtmed[1612], cpar9, 5); | |
304 | dz = cpar9[0] + zr; | |
305 | zr += 5.; | |
306 | pMC->Gspos("ARE7", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
307 | // | |
308 | // TUNGSTEN REAR SHIELD INNER PART | |
309 | // | |
310 | zr = abs_l - d_rear; | |
311 | cpar10[0] = d_rear / 2.; | |
312 | cpar10[1] = zr * TMath::Tan(acc_min * kDegrad); | |
313 | cpar10[2] = zr * TMath::Tan(theta_r * kDegrad); | |
314 | cpar10[3] = cpar10[1] + d_rear * TMath::Tan(acc_min * kDegrad); | |
315 | cpar10[4] = cpar10[2] + d_rear * TMath::Tan(theta_r * kDegrad); | |
316 | pMC->Gsvolu("ARIN", "CONE", idtmed[1611], cpar10, 5); | |
317 | dz = cpar10[0] + zr; | |
318 | pMC->Gspos("ARIN", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
319 | // | |
320 | // ELEMENTS OF THE BEAM PIPE TO BE POSITIONED INTO THE ABSORBER | |
321 | // | |
322 | // MOTHER VOLUME 1. SEGMENT | |
323 | // | |
324 | tpar[0] = 0.; | |
325 | tpar[1] = r_abs; | |
326 | tpar[2] = (abs_c - abs_d) / 2.; | |
327 | pMC->Gsvolu("AATU", "TUBE", idtmed[1655], tpar, 3); | |
328 | // | |
329 | tpar[1] = r_abs - .8; | |
330 | tpar[0] = tpar[1] - .2; | |
331 | tpar[2] = (abs_c - abs_d) / 2.; | |
332 | pMC->Gsvolu("ATUB", "TUBE", idtmed[1649], tpar, 3); | |
333 | dz = 0.; | |
334 | pMC->Gspos("ATUB", 1, "AATU", 0., 0., dz, 0, "ONLY"); | |
335 | // | |
336 | dz = (abs_c - abs_d) / 2. + abs_d; | |
337 | pMC->Gspos("AATU", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
338 | // | |
339 | // MOTHER VOLUME 2. SEGMENT | |
340 | // | |
341 | cpar[0] = (abs_l - abs_c) / 2.; | |
342 | cpar[1] = 0.; | |
343 | cpar[2] = r_abs; | |
344 | cpar[3] = 0.; | |
345 | cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad); | |
346 | pMC->Gsvolu("AAT1", "CONE", idtmed[1655], cpar, 5); | |
347 | // | |
348 | cpar[0] = (abs_l - abs_c) / 2.; | |
349 | cpar[2] += -.8; | |
350 | cpar[1] = cpar[2] - .2; | |
351 | cpar[4] += -.8; | |
352 | cpar[3] = cpar[4] - .2; | |
353 | pMC->Gsvolu("ATU1", "CONE", idtmed[1649], cpar, 5); | |
354 | dz = 0.; | |
355 | pMC->Gspos("ATU1", 1, "AAT1", 0., 0., dz, 0, "ONLY"); | |
356 | // | |
357 | dz = (abs_l - abs_c) / 2. + abs_c; | |
358 | pMC->Gspos("AAT1", 1, "ABSM", 0., 0., dz, 0, "ONLY"); | |
359 | // | |
360 | pMC->Gspos("ABSM", 1, "ALIC", 0., 0., 0., 0, "ONLY"); | |
361 | // | |
362 | // absorber support structure | |
363 | // | |
364 | // attention this element is positioned into ALIC | |
365 | // | |
366 | dpar[0] = 0.; | |
367 | dpar[1] = 360.; | |
368 | dpar[2] = 3.; | |
369 | dpar[3] = abs_l; | |
370 | dpar[4] = abs_l * TMath::Tan(acc_max * kDegrad); | |
371 | dpar[5] = dpar[4] + 4. / TMath::Cos(acc_max * kDegrad); | |
372 | dpar[6] = 600.; | |
373 | dpar[7] = TMath::Tan(acc_max * kDegrad) * 600; | |
374 | dpar[8] = dpar[7] + 4. / TMath::Cos(acc_max * kDegrad); | |
375 | dpar[9] = 670.; | |
376 | dpar[10] = 159.; | |
377 | dpar[11] = 163.5; | |
378 | pMC->Gsvolu("ASUP", "PCON", idtmed[1618], dpar, 12); | |
379 | dz = 0.; | |
380 | pMC->Gspos("ASUP", 1, "ALIC", 0., 0., dz, 0, "ONLY"); | |
381 | // | |
382 | // Flange at the entrance of the absorber | |
383 | // | |
384 | tpar[0] = 3.; | |
385 | tpar[1] = 5.7; | |
386 | tpar[2] = 2.; | |
387 | pMC->Gsvolu("AF63", "TUBE", idtmed[1618], tpar, 3); | |
388 | zpos = abs_d + tpar[2]; | |
389 | pMC->Gspos("AF63", 1, "ABSM", 0., 0., zpos, 0, "ONLY"); | |
390 | } | |
391 | ||
392 | //_____________________________________________________________________________ | |
b8032157 | 393 | void AliABSO::DrawModule() |
fe4da5cc | 394 | { |
395 | // | |
396 | // Draw a shaded view of the muon absorber | |
397 | // | |
398 | ||
399 | AliMC* pMC = AliMC::GetMC(); | |
400 | ||
401 | // Set everything unseen | |
402 | pMC->Gsatt("*", "seen", -1); | |
403 | // | |
404 | // Set ALIC mother transparent | |
405 | pMC->Gsatt("ALIC","SEEN",0); | |
406 | // | |
407 | // Set the volumes visible | |
408 | pMC->Gsatt("ABSM","seen",1); | |
409 | pMC->Gsatt("ANOS","seen",1); | |
410 | pMC->Gsatt("ASST","seen",1); | |
411 | pMC->Gsatt("AWFS","seen",1); | |
412 | pMC->Gsatt("APBS","seen",1); | |
413 | pMC->Gsatt("APOL","seen",1); | |
414 | pMC->Gsatt("AWI1","seen",1); | |
415 | pMC->Gsatt("AWI2","seen",1); | |
416 | pMC->Gsatt("ACON","seen",1); | |
417 | pMC->Gsatt("ARE1","seen",1); | |
418 | pMC->Gsatt("ARE2","seen",1); | |
419 | pMC->Gsatt("ARE3","seen",1); | |
420 | pMC->Gsatt("ARE4","seen",1); | |
421 | pMC->Gsatt("ARE5","seen",1); | |
422 | pMC->Gsatt("ARE6","seen",1); | |
423 | pMC->Gsatt("ARE7","seen",1); | |
424 | pMC->Gsatt("ARIN","seen",1); | |
425 | pMC->Gsatt("AATU","seen",1); | |
426 | pMC->Gsatt("ATUB","seen",1); | |
427 | pMC->Gsatt("AAT1","seen",1); | |
428 | pMC->Gsatt("ATU1","seen",1); | |
429 | pMC->Gsatt("ASUP","seen",1); | |
430 | pMC->Gsatt("AF63","seen",1); | |
431 | // | |
432 | pMC->Gdopt("hide", "on"); | |
433 | pMC->Gdopt("shad", "on"); | |
434 | pMC->Gsatt("*", "fill", 7); | |
435 | pMC->SetClipBox("."); | |
436 | pMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000); | |
437 | pMC->DefaultRange(); | |
438 | pMC->Gdraw("alic", 40, 30, 0, 21.5, 15, .04, .04); | |
439 | pMC->Gdhead(1111, "Muon Absorber"); | |
440 | pMC->Gdman(16, 6, "MAN"); | |
441 | pMC->Gdopt("hide","off"); | |
442 | } | |
443 | ||
444 | //_____________________________________________________________________________ | |
445 | void AliABSO::CreateMaterials() | |
446 | { | |
447 | // | |
448 | // Define materials for muon absorber | |
449 | // | |
450 | Int_t ISXFLD = gAlice->Field()->Integ(); | |
451 | Float_t SXMGMX = gAlice->Field()->Max(); | |
452 | ||
453 | Float_t apoly[2] = { 12.01,1. }; | |
454 | Float_t zpoly[2] = { 6.,1. }; | |
455 | Float_t wpoly[2] = { .33,.67 }; | |
456 | Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98, | |
457 | 28.086,39.1,40.08,55.85 }; | |
458 | Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. }; | |
459 | Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872, | |
460 | .337021,.013,.044,.014 }; | |
461 | Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 }; | |
462 | Float_t zsteel[4] = { 26.,24.,28.,14. }; | |
463 | Float_t wsteel[4] = { .715,.18,.1,.005 }; | |
464 | ||
465 | Float_t epsil, stmin, tmaxfd, deemax, stemax; | |
466 | // | |
467 | // Carbon | |
468 | AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9); | |
469 | AliMaterial(26, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9); | |
470 | AliMaterial(46, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9); | |
471 | // | |
472 | // Aluminum | |
473 | AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2); | |
474 | AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2); | |
475 | AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2); | |
476 | // | |
477 | // Iron | |
478 | AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1); | |
479 | AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1); | |
480 | AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1); | |
481 | // | |
482 | // Tungsten | |
483 | AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3); | |
484 | AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3); | |
485 | AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3); | |
486 | // | |
487 | // Lead | |
488 | AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5); | |
489 | AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5); | |
490 | AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5); | |
491 | // | |
492 | // Air | |
493 | AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.); | |
494 | AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.); | |
495 | AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.); | |
496 | // | |
497 | // Vacuum | |
498 | AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16); | |
499 | AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16); | |
500 | AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16); | |
501 | // | |
502 | // Concrete | |
503 | AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc); | |
504 | AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc); | |
505 | AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc); | |
506 | // | |
507 | // Poly CH2 | |
508 | AliMixture(18, "POLYETHYLEN$", apoly, zpoly, .95, -2, wpoly); | |
509 | // | |
510 | // After a call with ratios by number (negative number of elements), | |
511 | // the ratio array is changed to the ratio by weight, so all successive | |
512 | // calls with the same array must specify the number of elements as | |
513 | // positive | |
514 | // | |
515 | AliMixture(38, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly); | |
516 | AliMixture(58, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly); | |
517 | // | |
518 | // stainless Steel | |
519 | AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel); | |
520 | AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel); | |
521 | AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel); | |
522 | // | |
523 | // **************** | |
524 | // Defines tracking media parameters. | |
525 | // | |
526 | epsil = .001; // Tracking precision, | |
527 | stemax = -1.; // Maximum displacement for multiple scat | |
528 | tmaxfd = -20.; // Maximum angle due to field deflection | |
529 | deemax = -.3; // Maximum fractional energy loss, DLS | |
530 | stmin = -.8; | |
531 | // *************** | |
532 | // | |
533 | // Carbon | |
534 | AliMedium(1606, "C_C0 ", 6, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
535 | AliMedium(1626, "C_C1 ", 26, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
536 | AliMedium(1646, "C_C2 ", 46, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
537 | // | |
538 | // Aluminum | |
539 | AliMedium(1609, "ALU_C0 ", 9, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
540 | AliMedium(1629, "ALU_C1 ", 29, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
541 | AliMedium(1649, "ALU_C2 ", 49, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
542 | // | |
543 | // Iron | |
544 | AliMedium(1610, "FE_C0 ", 10, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
545 | AliMedium(1630, "FE_C1 ", 30, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
546 | AliMedium(1650, "FE_C2 ", 50, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
547 | // | |
548 | // Tungsten | |
549 | AliMedium(1612, "W_C0 ", 12, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
550 | AliMedium(1632, "W_C1 ", 32, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
551 | AliMedium(1652, "W_C2 ", 52, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
552 | // | |
553 | // Lead | |
554 | AliMedium(1613, "PB_C0 ", 13, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
555 | AliMedium(1633, "PB_C1 ", 33, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
556 | AliMedium(1653, "PB_C2 ", 53, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
557 | // | |
558 | // Air | |
559 | AliMedium(1615, "AIR_C0 ", 15, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
560 | AliMedium(1635, "AIR_C1 ", 35, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
561 | AliMedium(1655, "AIR_C2 ", 55, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
562 | // | |
563 | // Vacuum | |
564 | AliMedium(1616, "VA_C0 ", 16, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
565 | AliMedium(1636, "VA_C1 ", 36, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
566 | AliMedium(1656, "VA_C2 ", 56, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
567 | // | |
568 | // Concrete | |
569 | AliMedium(1617, "CC_C0 ", 17, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
570 | AliMedium(1637, "CC_C1 ", 37, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
571 | AliMedium(1657, "CC_C2 ", 57, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
572 | // | |
573 | // Polyethilene | |
574 | AliMedium(1618, "CH2_C0 B ", 18, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
575 | AliMedium(1638, "CH2_C1 ", 38, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
576 | AliMedium(1658, "CH2_C2 ", 58, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
577 | // | |
578 | // Steel | |
579 | AliMedium(1619, "ST_C0 ", 19, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
580 | AliMedium(1639, "ST_C1 ", 39, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
581 | AliMedium(1659, "ST_C3 ", 59, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin); | |
582 | } | |
583 | ||
584 | //_____________________________________________________________________________ | |
585 | void AliABSO::Init() | |
586 | { | |
587 | // | |
588 | // Initialisation of the muon absorber after it has been built | |
589 | Int_t i; | |
590 | // | |
591 | printf("\n"); | |
592 | for(i=0;i<35;i++) printf("*"); | |
593 | printf(" ABSO_INIT "); | |
594 | for(i=0;i<35;i++) printf("*"); | |
595 | printf("\n"); | |
596 | // | |
597 | for(i=0;i<80;i++) printf("*"); | |
598 | printf("\n"); | |
599 | } | |
600 |