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43d014f0 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
eeacf08b 16/* $Id$ */
43d014f0 17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// Muon ABSOrber //
21// This class contains the description of the muon absorber geometry //
22// //
23//Begin_Html
24/*
25<img src="picts/AliABSOClass.gif">
26</pre>
27<br clear=left>
28<font size=+2 color=red>
29<p>The responsible person for this module is
30<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
31</font>
32<pre>
33*/
34//End_Html
35// //
36// //
37///////////////////////////////////////////////////////////////////////////////
38
88cb7938 39#include <TVirtualMC.h>
40
43d014f0 41#include "AliABSOv0.h"
43d014f0 42#include "AliConst.h"
88cb7938 43#include "AliRun.h"
b2ef5f06 44
43d014f0 45ClassImp(AliABSOv0)
46
47//_____________________________________________________________________________
48AliABSOv0::AliABSOv0()
49{
50 //
51 // Default constructor
52 //
53}
54
55//_____________________________________________________________________________
56AliABSOv0::AliABSOv0(const char *name, const char *title)
57 : AliABSO(name,title)
58{
59 //
60 // Standard constructor
61 //
62 SetMarkerColor(7);
63 SetMarkerStyle(2);
64 SetMarkerSize(0.4);
65}
66
67//_____________________________________________________________________________
68void AliABSOv0::CreateGeometry()
69{
b2ef5f06 70 //
71 // Creation of the geometry of the muon absorber
72 //
73 //Begin_Html
74 /*
75 <img src="picts/AliABSOv0Tree.gif">
76 */
77 //End_Html
78 //Begin_Html
79 /*
80 <img src="picts/AliABSOv0.gif">
81 */
82 //End_Html
83
84 //
85 //
56f14ac2 86
87 enum {kC=1605, kAl=1608, kFe=1609, kCu=1610, kW=1611, kPb=1612,
77976fd8 88 kNiCuW=1620, kVacuum=1615, kAir=1614, kConcrete=1616,
89 kPolyCH2=1617, kSteel=1609, kInsulation=1613, kPolyCc=1619};
b2ef5f06 90
91 Int_t *idtmed = fIdtmed->GetArray()-1599;
43d014f0 92
b2ef5f06 93 Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3];
94 Float_t dz;
513b07d0 95 Int_t idrotm[1699];
b2ef5f06 96#include "ABSOSHILConst.h"
97#include "ABSOConst.h"
381ec9af 98//
99// Structure of Tracking Region
100//
101 Float_t dzFe = 25.;
102
103// 3 < theta < 9
104 fNLayers[0] = 5;
dbbe5bc1 105 fMLayers[0][0] = kAir; fZLayers[0][0] = kZAbsStart;
106 fMLayers[0][1] = kC; fZLayers[0][1] = kZAbsCc;
107 fMLayers[0][2] = kConcrete; fZLayers[0][2] = kZRear-kDRear-dzFe;
108 fMLayers[0][3] = kSteel; fZLayers[0][3] = kZRear-kDRear;
109 fMLayers[0][4] = kSteel; fZLayers[0][4] = kZRear;
381ec9af 110// 2 < theta < 3
dbbe5bc1 111 fNLayers[1] = 6;
112
113 fMLayers[1][0] = kAir ; fZLayers[1][0] = fZLayers[0][0]-10.;
114 fMLayers[1][1] = kAl ; fZLayers[1][1] = fZLayers[0][0];
115 fMLayers[1][2] = fMLayers[0][1]; fZLayers[1][2] = fZLayers[0][1];
116 fMLayers[1][3] = fMLayers[0][2]; fZLayers[1][3] = fZLayers[0][2];
117 fMLayers[1][4] = fMLayers[0][3]; fZLayers[1][4] = fZLayers[0][3];
118 fMLayers[1][5] = kNiCuW; fZLayers[1][5] = fZLayers[0][4];
381ec9af 119//
120
b2ef5f06 121 Float_t dTube=0.1; // tube thickness
122 Float_t dInsu=0.5; // insulation thickness
123 Float_t dEnve=0.1; // protective envelope thickness
ba47c054 124 // Float_t dFree=0.5; // clearance thickness
b2ef5f06 125
126
127// Mother volume and outer shielding: Pb
43d014f0 128 par[0] = 0.;
129 par[1] = 360.;
130 par[2] = 7.;
b2ef5f06 131
dbbe5bc1 132 par[3] = -(kZRear-kZAbsStart)/2.;
133 par[4] = kRAbs;
134 par[5] = kZAbsStart * TMath::Tan(kTheta1);
43d014f0 135
dbbe5bc1 136 par[6] = par[3]+(kZNose-kZAbsStart);
137 par[7] = kRAbs;
138 par[8] = kZNose * TMath::Tan(kTheta1);
43d014f0 139
dbbe5bc1 140 par[9] = par[3]+(kZConeTPC-kZAbsStart);
141 par[10] = kRAbs;
142 par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(kTheta2);
43d014f0 143
dbbe5bc1 144 par[12] = par[3]+(kZOpen-kZAbsStart);
145 par[13] = kRAbs;
146 par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(kAccMax);
43d014f0 147
dbbe5bc1 148 par[15] = par[3]+(kZRear-kDRear-kZAbsStart);
149 par[16] = kRAbs + (par[15] - par[12]) * TMath::Tan(kThetaOpen1) ;
150 par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(kAccMax);
43d014f0 151
dbbe5bc1 152 par[18] = par[3]+(kZRear-kDRear-kZAbsStart);
153 par[19] = (kZRear-kDRear) * TMath::Tan(kAccMin);
154 par[20] = par[14] + (par[18] - par[12]) * TMath::Tan(kAccMax);
43d014f0 155
156 par[21] = -par[3];
dbbe5bc1 157 par[22] = kZRear* TMath::Tan(kAccMin);
158 par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(kAccMax);
b2ef5f06 159 gMC->Gsvolu("ABSS", "PCON", idtmed[kPb], par, 24);
74c0d076 160 { // Begin local scope for i
b2ef5f06 161 for (Int_t i=4; i<18; i+=3) par[i] = 0;
74c0d076 162 } // End local scope for i
b2ef5f06 163 gMC->Gsvolu("ABSM", "PCON", idtmed[kVacuum+40], par, 24);
43d014f0 164 gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");
165
166//
167// Steel envelope
168//
dbbe5bc1 169 par[4] = par[5] -kDSteel;
170 par[7] = par[8] -kDSteel;
171 par[10]= par[11]-kDSteel;
172 par[13]= par[14]-kDSteel;
173 par[16]= par[17]-kDSteel;
174 par[19]= par[20]-kDSteel;
175 par[22]= par[23]-kDSteel;
b2ef5f06 176 gMC->Gsvolu("ABST", "PCON", idtmed[kSteel], par, 24);
43d014f0 177 gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
178//
179// Polyethylene shield
180//
dbbe5bc1 181 cpar[0] = (kZRear - kZConeTPC) / 2.;
182 cpar[1] = kZConeTPC * TMath::Tan(kAccMax);
183 cpar[2] = cpar[1] + kDPoly;
184 cpar[3] = kZRear * TMath::Tan(kAccMax);
185 cpar[4] = cpar[3] + kDPoly;
b2ef5f06 186 gMC->Gsvolu("APOL", "CONE", idtmed[kPolyCH2+40], cpar, 5);
dbbe5bc1 187 dz = (kZRear-kZAbsStart)/2.-cpar[0];
43d014f0 188 gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");
189
190//
191// Tungsten nose to protect TPC
192//
dbbe5bc1 193 cpar[0] = (kZNose - kZAbsStart) / 2.;
194 cpar[1] = kZAbsStart * TMath::Tan(kAccMax);
195 cpar[2] = kZAbsStart * TMath::Tan(kTheta1)-kDSteel;
196 cpar[3] = kZNose * TMath::Tan(kAccMax);
197 cpar[4] = kZNose * TMath::Tan(kTheta1)-kDSteel;
b2ef5f06 198 gMC->Gsvolu("ANOS", "CONE", idtmed[kW], cpar, 5);
8f657ed5 199 //
dbbe5bc1 200 dz = -(kZRear-kZAbsStart)/2.+cpar[0];
43d014f0 201 gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
8f657ed5 202 //
203 // Tungsten inner shield
204 //
dbbe5bc1 205 Float_t zW = kZTwoDeg+.1;
206 Float_t dZ = zW+(kZRear-kDRear-zW)/2.;
43d014f0 207 //
b2ef5f06 208 pcpar[0] = 0.;
209 pcpar[1] = 360.;
210 pcpar[2] = 3.;
211 pcpar[3] = zW-dZ;
dbbe5bc1 212 pcpar[4] = kRAbs;
213 pcpar[5] = zW * TMath::Tan(kAccMin);
214 pcpar[6] = kZOpen-dZ;
215 pcpar[7] = kRAbs;
216 pcpar[8] = kZOpen * TMath::Tan(kAccMin);
217 pcpar[9] = kZRear-kDRear-dZ;
218 pcpar[10] = kRAbs+(kZRear-kDRear-kZOpen) * TMath::Tan(kThetaOpen1);
219 pcpar[11] = (kZRear-kDRear) * TMath::Tan(kAccMin);
b2ef5f06 220
221 gMC->Gsvolu("AWIN", "PCON", idtmed[kNiCuW+40], pcpar, 12);
dbbe5bc1 222 dz=(zW+kZRear-kDRear)/2-(kZAbsStart+kZRear)/2.;
43d014f0 223 gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");
8f657ed5 224//
225// First part replaced by Carbon
226//
513b07d0 227 cpar[0] = (200.-zW)/2.;
dbbe5bc1 228 cpar[1] = kRAbs;
513b07d0 229 cpar[2] = pcpar[5];
dbbe5bc1 230 cpar[3] = kRAbs;
231 cpar[4] = 200. * TMath::Tan(kAccMin);
513b07d0 232 gMC->Gsvolu("ACNO", "CONE", idtmed[kC], cpar, 5);
233 dz = zW-dZ+cpar[0];
513b07d0 234 gMC->Gspos("ACNO", 1, "AWIN", 0., 0., dz, 0, "ONLY");
8f657ed5 235
8f657ed5 236/*
ba47c054 237 Float_t zWW = 383.5;
dbbe5bc1 238 cpar[0] = (kZRear-kDRear-zWW)/2.;
239 cpar[1] = kRAbs + (zWW-kZOpen) * TMath::Tan(kThetaOpen1);
240 cpar[2] = zWW * TMath::Tan(kAccMin);
8f657ed5 241 cpar[3] = pcpar[10];
242 cpar[4] = pcpar[11];
243 gMC->Gsvolu("AWNO", "CONE", idtmed[kCu+40], cpar, 5);
244 dz = zWW-dZ+cpar[0];
245
246 gMC->Gspos("AWNO", 1, "AWIN", 0., 0., dz, 0, "ONLY");
247*/
248 //
43d014f0 249 // Inner tracking region
250 //
381ec9af 251 // mother volume: Cu
43d014f0 252 //
8f657ed5 253 //
43d014f0 254 pcpar[0] = 0.;
255 pcpar[1] = 360.;
256 pcpar[2] = 3.;
dbbe5bc1 257 pcpar[3] = -(kZRear-kZAbsStart)/2.;
258 pcpar[4] = kRAbs;
259 pcpar[5] = kZAbsStart * TMath::Tan(kAccMax);
260 pcpar[6] = pcpar[3]+(kZTwoDeg-kZAbsStart);
261 pcpar[7] = kRAbs;
262 pcpar[8] = kZTwoDeg * TMath::Tan(kAccMax);
85d164ab 263 pcpar[9] = -pcpar[3];
dbbe5bc1 264 pcpar[10] = kZRear * TMath::Tan(kAccMin);
265 pcpar[11] = kZRear * TMath::Tan(kAccMax);
381ec9af 266 gMC->Gsvolu("AITR", "PCON", idtmed[fMLayers[0][4]], pcpar, 12);
43d014f0 267 //
268 // special Pb medium for last 5 cm of Pb
dbbe5bc1 269 Float_t zr=kZRear-2.-0.001;
b2ef5f06 270 cpar[0] = 1.0;
dbbe5bc1 271 cpar[1] = zr * TMath::Tan(kThetaR);
272 cpar[2] = zr * TMath::Tan(kAccMax);
273 cpar[3] = cpar[1] + TMath::Tan(kThetaR) * 2;
274 cpar[4] = cpar[2] + TMath::Tan(kAccMax) * 2;
381ec9af 275 gMC->Gsvolu("ARPB", "CONE", idtmed[fMLayers[0][4]], cpar, 5);
dbbe5bc1 276 dz=(kZRear-kZAbsStart)/2.-cpar[0]-0.001;
43d014f0 277 gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");
43d014f0 278 //
279 // concrete cone: concrete
280 //
dbbe5bc1 281 pcpar[9] = pcpar[3]+(kZRear-kDRear-kZAbsStart);
282 pcpar[10] = (kZRear-kDRear) * TMath::Tan(kAccMin);
283 pcpar[11] = (kZRear-kDRear) * TMath::Tan(kAccMax);
381ec9af 284 gMC->Gsvolu("ACON", "PCON", idtmed[fMLayers[0][2]+40], pcpar, 12);
43d014f0 285 gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
381ec9af 286//
287// Fe Cone
288//
dbbe5bc1 289 zr = kZRear-kDRear-dzFe;
381ec9af 290 cpar[0] = dzFe/2.;
dbbe5bc1 291 cpar[1] = zr * TMath::Tan(kAccMin);
292 cpar[2] = zr * TMath::Tan(kAccMax);
293 cpar[3] = cpar[1] + TMath::Tan(kAccMin) * dzFe;
294 cpar[4] = cpar[2] + TMath::Tan(kAccMax) * dzFe;
381ec9af 295 gMC->Gsvolu("ACFE", "CONE",idtmed[fMLayers[0][3]], cpar, 5);
296
dbbe5bc1 297 dz = (kZRear-kZAbsStart)/2.-kDRear-dzFe/2.;
381ec9af 298
299 gMC->Gspos("ACFE", 1, "ACON", 0., 0., dz, 0, "ONLY");
300
301
302 //
43d014f0 303 //
304 // carbon cone: carbon
305 //
dbbe5bc1 306 pcpar[9] = pcpar[3]+(kZAbsCc-kZAbsStart);
307 pcpar[10] = kZAbsCc * TMath::Tan(kAccMin);
308 pcpar[11] = kZAbsCc * TMath::Tan(kAccMax);
381ec9af 309 gMC->Gsvolu("ACAR", "PCON", idtmed[fMLayers[0][1]+40], pcpar, 12);
43d014f0 310 gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
b2ef5f06 311 //
312 // carbon cone outer region
313 //
314 cpar[0] = 10.;
dbbe5bc1 315 cpar[1] = kRAbs;
316 cpar[2] = kZAbsStart* TMath::Tan(kAccMax);
317 cpar[3] = kRAbs;
318 cpar[4] = cpar[2]+2. * cpar[0] * TMath::Tan(kAccMax);
b2ef5f06 319
381ec9af 320 gMC->Gsvolu("ACAO", "CONE", idtmed[fMLayers[0][1]], cpar, 5);
dbbe5bc1 321 dz=-(kZRear-kZAbsStart)/2.+cpar[0];
b2ef5f06 322 gMC->Gspos("ACAO", 1, "ACAR", 0., 0., dz, 0, "ONLY");
43d014f0 323 //
324 // inner W shield
b2ef5f06 325 Float_t epsi=0.;
326 Float_t repsi=1.;
327
dbbe5bc1 328 zr=kZRear-(kDRear-epsi);
329 cpar[0] = (kDRear-epsi)/2.;
330 cpar[1] = zr * TMath::Tan(kAccMin);
331 cpar[2] = zr * TMath::Tan(kThetaR*repsi);
332 cpar[3] = cpar[1] + TMath::Tan(kAccMin) * (kDRear-epsi);
333 cpar[4] = cpar[2] + TMath::Tan(kThetaR*repsi) * (kDRear-epsi);
381ec9af 334 gMC->Gsvolu("ARW0", "CONE", idtmed[fMLayers[1][4]+40], cpar, 5);
dbbe5bc1 335 dz=(kZRear-kZAbsStart)/2.-cpar[0];
43d014f0 336 gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
337 //
338 // special W medium for last 5 cm of W
dbbe5bc1 339 zr=kZRear-5;
43d014f0 340 cpar[0] = 2.5;
dbbe5bc1 341 cpar[1] = zr * TMath::Tan(kAccMin);
342 cpar[2] = zr * TMath::Tan(kThetaR*repsi);
343 cpar[3] = cpar[1] + TMath::Tan(kAccMin) * 5.;
344 cpar[4] = cpar[2] + TMath::Tan(kThetaR*repsi) * 5.;
381ec9af 345 gMC->Gsvolu("ARW1", "CONE", idtmed[fMLayers[1][4]+20], cpar, 5);
dbbe5bc1 346 dz=(kDRear-epsi)/2.-cpar[0];
43d014f0 347 gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
348 //
381ec9af 349 // Cu
dbbe5bc1 350 Float_t drMin=TMath::Tan(kThetaR) * 5;
351 Float_t drMax=TMath::Tan(kAccMax) * 5;
381ec9af 352 gMC->Gsvolu("ARPE", "CONE", idtmed[fMLayers[0][4]], cpar, 0);
43d014f0 353 cpar[0]=2.5;
74c0d076 354 { // Begin local scope for i
b2ef5f06 355 for (Int_t i=0; i<3; i++) {
dbbe5bc1 356 zr=kZRear-kDRear+5+i*10.;
357 cpar[1] = zr * TMath::Tan(kThetaR);
358 cpar[2] = zr * TMath::Tan(kAccMax);
b2ef5f06 359 cpar[3] = cpar[1] + drMin;
360 cpar[4] = cpar[2] + drMax;
dbbe5bc1 361 dz=(kZRear-kZAbsStart)/2.-cpar[0]-5.-(2-i)*10;
b2ef5f06 362 gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
363 }
74c0d076 364 } // End local scope for i
43d014f0 365 gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");
dbbe5bc1 366 dz = (kZRear-kZAbsStart)/2.+kZAbsStart;
43d014f0 367 gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
368//
369//
370// vacuum system
371//
372// pipe and heating jackets
373//
374//
375// cylindrical piece
dbbe5bc1 376 tpar0[2]=(kZOpen-kZAbsStart)/2;
377 tpar0[0]=kRVacu;
378 tpar0[1]=kRVacu+dTube+dInsu+dEnve;
b2ef5f06 379 gMC->Gsvolu("AV11", "TUBE", idtmed[kSteel+40], tpar0, 3);
43d014f0 380//
381// insulation
b2ef5f06 382
43d014f0 383 tpar[2]=tpar0[2];
dbbe5bc1 384 tpar[0]=kRVacu+dTube;
b2ef5f06 385 tpar[1]=tpar[0]+dInsu;
386 gMC->Gsvolu("AI11", "TUBE", idtmed[kInsulation+40], tpar, 3);
43d014f0 387 gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY");
b2ef5f06 388//
dbbe5bc1 389 dz=-(kZRear-kZAbsStart)/2.+tpar0[2];
43d014f0 390 gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY");
43d014f0 391//
392// conical piece
b2ef5f06 393
dbbe5bc1 394 cpar0[0]=(kZRear-kDRear-kZOpen)/2;
395 cpar0[1]= kRVacu-0.05;
396 cpar0[2]= kRVacu+dTube+dInsu+dEnve;
397 Float_t dR=2.*cpar0[0]*TMath::Tan(kThetaOpen1);
b2ef5f06 398 cpar0[3]=cpar0[1]+dR;
399 cpar0[4]=cpar0[2]+dR;
400 gMC->Gsvolu("AV21", "CONE", idtmed[kSteel+40], cpar0, 5);
401 dTube+=0.05;
402
43d014f0 403//
404// insulation
405 cpar[0]=cpar0[0];
b2ef5f06 406 cpar[1]=cpar0[1]+dTube;
407 cpar[2]=cpar0[1]+dTube+dInsu;
408 cpar[3]=cpar0[3]+dTube;
409 cpar[4]=cpar0[3]+dTube+dInsu;
410 gMC->Gsvolu("AI21", "CONE", idtmed[kInsulation+40], cpar, 5);
43d014f0 411 gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY");
43d014f0 412
dbbe5bc1 413 dz=(kZRear-kZAbsStart)/2.-cpar0[0]-kDRear;
43d014f0 414 gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY");
381ec9af 415//
416// Support cone
417
513b07d0 418 par[0] = 22.5;
419 par[1] = 360.0;
420 par[2] = 8.0;
421 par[3] = 4.0;
381ec9af 422
dbbe5bc1 423 par[4] = kZRear;
513b07d0 424 par[5] = 100.;
8f657ed5 425 par[6] = 180.;
381ec9af 426
dbbe5bc1 427 par[7] = kZRear+20.;
513b07d0 428 par[8] = 100.;
8f657ed5 429 par[9] = 180.;
381ec9af 430
dbbe5bc1 431 par[10] = kZRear+20.;
8f657ed5 432 par[11] = 178.;
433 par[12] = 180.;
381ec9af 434
513b07d0 435 par[13] = 600.;
8f657ed5 436 par[14] = 178.;
437 par[15] = 180.;
381ec9af 438
439
8f657ed5 440 gMC->Gsvolu("ASSS", "PGON", idtmed[kAl], par, 16);
381ec9af 441 gMC->Gspos("ASSS", 1, "ALIC", 0., 0., 0., 0, "ONLY");
442
513b07d0 443 Float_t trap[11];
444 trap[ 0] = (530.-170.)/2.;
445 trap[ 2] = 0.;
446 trap[ 3] = 2.;
dbbe5bc1 447 trap[ 4] = (600.-(kZRear+2.))/2.;;
513b07d0 448 trap[ 5] = trap[4];
449 trap[ 6] = 0.;
450 trap[ 7] = 2.;
451 trap[ 8] = 5.;
452 trap[ 9] = 5.;
453 trap[10] = 0.;
454 trap[ 1] = -TMath::ATan((trap[4]-trap[8])/2./trap[0])*180./TMath::Pi();
455 AliMatrix(idrotm[1600], 180., 0., 90., 0., 90., 90.);
456 AliMatrix(idrotm[1601], 180., 0., 90., 0., 90., 270.);
457 gMC->Gsvolu("ASST", "TRAP", idtmed[kSteel], trap, 11);
dbbe5bc1 458 dz = (600.+kZRear+2.)/2.+(trap[4]-trap[8])/2.;
ba47c054 459 // Float_t dy = 170.+trap[0];
513b07d0 460
8f657ed5 461// gMC->Gspos("ASST", 1, "ALIC", 0., dy, dz, idrotm[1600], "ONLY");
462// gMC->Gspos("ASST", 2, "ALIC", 0., -dy, dz, idrotm[1601], "ONLY");
43d014f0 463}
464
465//_____________________________________________________________________________
466
467void AliABSOv0::Init()
468{
469 //
470 // Initialisation of the muon absorber after it has been built
471 Int_t i;
472 //
9e1a0ddb 473 if(fDebug) {
474 printf("\n%s: ",ClassName());
475 for(i=0;i<35;i++) printf("*");
476 printf(" ABSOv0_INIT ");
477 for(i=0;i<35;i++) printf("*");
478 printf("\n%s: ",ClassName());
479 //
480 for(i=0;i<80;i++) printf("*");
481 printf("\n");
482 }
43d014f0 483}
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