1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
20 ///////////////////////////////////////////////////////////////////////////////
23 // This class contains the description of the muon absorber geometry //
27 <img src="picts/AliABSOClass.gif">
30 <font size=+2 color=red>
31 <p>The responsible person for this module is
32 <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
39 ///////////////////////////////////////////////////////////////////////////////
47 //_____________________________________________________________________________
51 // Default constructor
55 //_____________________________________________________________________________
56 AliABSO::AliABSO(const char *name, const char *title)
57 : AliModule(name,title)
60 // Standard constructor
67 //_____________________________________________________________________________
68 void AliABSO::CreateGeometry()
71 // Creation of the geometry of the muon absorber
75 <img src="picts/AliABSOTree.gif">
80 <img src="picts/AliABSO.gif">
84 Int_t *idtmed = fIdtmed->GetArray()-1599;
86 Float_t d_pb, cpar[5], dpar[12], tpar[3], zpos,
87 cpar1[5], cpar2[5], cpar3[5], cpar4[5], cpar5[12],
88 cpar7[5], cpar8[5], cpar9[5], abs_c, abs_d,
89 abs_l, cpar10[5], r_abs;
90 Float_t theta1, theta2, abs_cc, d_rear, dz, zr,
91 z_cone, d_poly, z_nose, theta_open;
92 Float_t acc_min, acc_max, par[50], d_steel, z_w,
95 abs_d = 90.; // DEFINES DRIFT LENGTH
98 theta1 = 24.; // 1. angle defining the front absorber
99 theta2 = 5.; // 2. angle defining the front absorbe
100 acc_max = 9.; // ANGLE POLAIRE MAXIMUM
101 acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION
103 d_steel = 1.; // THICKNESS OF STEEL SUPPORT
106 abs_cc = 315.; // DEFINES LENGTH OF CARBON
108 //abs_s = 150.; // DEFINES W-SHIELD LENGTH
109 //abs_n = 80.; // START OF NOSE
124 //zcone_e = 859.0875;
139 // --- Outer shape of front absorber
145 par[5] = abs_d * TMath::Tan(theta1 * kDegrad);
148 par[8] = par[6] * TMath::Tan(theta1 * kDegrad);
151 par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2 * kDegrad);
154 par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max * kDegrad);
155 gMC->Gsvolu("ABSM", "PCON", idtmed[1605], par, 15);
157 // --- Now define all elements of the absorber
159 // TUNGSTEN NOSE SEGMENT BETWEEN Z=90 AND 112 CM
160 // SHAPED ALONG A 24 DEG LINE
162 cpar1[0] = (z_nose - abs_d) / 2.;
163 cpar1[1] = abs_d * TMath::Tan(acc_max * kDegrad) + d_steel;
164 cpar1[2] = abs_d * TMath::Tan(theta1 * kDegrad);
165 cpar1[3] = z_nose * TMath::Tan(acc_max * kDegrad) + d_steel;
166 cpar1[4] = z_nose * TMath::Tan(theta1 * kDegrad);
167 gMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar1, 5);
169 dz = cpar1[0] + abs_d;
170 gMC->Gspos("ANOS", 1, "ABSM", 0., 0., dz, 0, "ONLY");
172 // IRON SUPPORT STRUCTURE
174 cpar2[0] = (abs_l - abs_d) / 2.;
175 cpar2[1] = abs_d * TMath::Tan(acc_max * kDegrad);
176 cpar2[2] = cpar2[1] + d_steel;
177 cpar2[3] = abs_l * TMath::Tan(acc_max * kDegrad);
178 cpar2[4] = cpar2[3] + d_steel;
179 gMC->Gsvolu("ASST", "CONE", idtmed[1658], cpar2, 5);
180 dz = cpar2[0] + abs_d;
181 gMC->Gspos("ASST", 1, "ABSM", 0., 0., dz, 0, "ONLY");
183 // PB FRONT SHIELD INNER SEGMENT, ALSO POLYETHYLENE WAS
184 // CONSIDERED FOR THIS REGION
186 cpar3[0] = (z_cone - z_nose) / 2.;
188 cpar3[2] = cpar1[3] + d_poly;
189 cpar3[3] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel;
190 cpar3[4] = cpar3[3] + d_poly;
191 gMC->Gsvolu("AWFS", "CONE", idtmed[1652], cpar3, 5);
192 dz = cpar3[0] + z_nose;
193 gMC->Gspos("AWFS", 1, "ABSM", 0., 0., dz, 0, "ONLY");
201 cpar5[4] = z_nose * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly;
202 cpar5[5] = z_nose * TMath::Tan(theta1 * kDegrad);
204 cpar5[7] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly;
205 cpar5[8] = cpar5[7] + d_pb;
207 cpar5[10] = abs_l * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly;
208 cpar5[11] = cpar5[10] + d_pb;
209 gMC->Gsvolu("APBS", "PCON", idtmed[1612], cpar5, 12);
211 gMC->Gspos("APBS", 1, "ABSM", 0., 0., dz, 0, "ONLY");
215 cpar4[0] = (abs_l - z_cone) / 2.;
216 cpar4[1] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel;
217 cpar4[2] = cpar4[1] + d_poly;
218 cpar4[3] = abs_l * TMath::Tan(acc_max * kDegrad) + d_steel;
219 cpar4[4] = cpar4[3] + d_poly;
220 gMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar4, 5);
221 dz = cpar4[0] + z_cone;
222 gMC->Gspos("APOL", 1, "ABSM", 0., 0., dz, 0, "ONLY");
224 // LEAD INNER SHIELD (inner radius const up to z=abs_c)
226 z_w = r_abs / TMath::Tan(acc_min * kDegrad);
227 cpar8[0] = (abs_c - z_w) / 2.;
229 cpar8[2] = r_abs + epsilon;
231 cpar8[4] = abs_c * TMath::Tan(acc_min * kDegrad);
232 gMC->Gsvolu("AWI1", "CONE", idtmed[1652], cpar8, 5);
234 gMC->Gspos("AWI1", 1, "ABSM", 0., 0., dz, 0, "ONLY");
236 // TUNGSTEN OPENING CONE UP TO THE END
238 cpar8[0] = (abs_l - abs_c) / 2.;
240 cpar8[2] = abs_c * TMath::Tan(acc_min * kDegrad);
241 cpar8[3] = cpar8[1] + cpar8[0] * 2. * TMath::Tan(theta_open * kDegrad);
242 cpar8[4] = abs_l * TMath::Tan(acc_min * kDegrad);
243 gMC->Gsvolu("AWI2", "CONE", idtmed[1651], cpar8, 5);
244 dz = cpar8[0] + abs_c;
245 gMC->Gspos("AWI2", 1, "ABSM", 0., 0., dz, 0, "ONLY");
249 cpar7[0] = (abs_l - d_rear - abs_cc) / 2.;
250 cpar7[1] = abs_cc * TMath::Tan(acc_min * kDegrad);
251 cpar7[2] = abs_cc * TMath::Tan(acc_max * kDegrad);
252 cpar7[3] = (abs_l - d_rear) * TMath::Tan(acc_min * kDegrad);
253 cpar7[4] = (abs_l - d_rear) * TMath::Tan(acc_max * kDegrad);
254 gMC->Gsvolu("ACON", "CONE", idtmed[1656], cpar7, 5);
255 dz = cpar7[0] + abs_cc;
256 gMC->Gspos("ACON", 1, "ABSM", 0., 0., dz, 0, "ONLY");
262 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
263 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
264 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
265 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
266 gMC->Gsvolu("ARE1", "CONE", idtmed[1652], cpar9, 5);
269 gMC->Gspos("ARE1", 1, "ABSM", 0., 0., dz, 0, "ONLY");
271 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
272 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
273 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
274 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
275 gMC->Gsvolu("ARE2", "CONE", idtmed[1657], cpar9, 5);
278 gMC->Gspos("ARE2", 1, "ABSM", 0., 0., dz, 0, "ONLY");
280 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
281 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
282 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
283 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
284 gMC->Gsvolu("ARE3", "CONE", idtmed[1652], cpar9, 5);
287 gMC->Gspos("ARE3", 1, "ABSM", 0., 0., dz, 0, "ONLY");
289 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
290 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
291 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
292 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
293 gMC->Gsvolu("ARE4", "CONE", idtmed[1657], cpar9, 5);
296 gMC->Gspos("ARE4", 1, "ABSM", 0., 0., dz, 0, "ONLY");
298 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
299 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
300 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
301 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
302 gMC->Gsvolu("ARE5", "CONE", idtmed[1652], cpar9, 5);
305 gMC->Gspos("ARE5", 1, "ABSM", 0., 0., dz, 0, "ONLY");
307 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
308 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
309 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
310 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
311 gMC->Gsvolu("ARE6", "CONE", idtmed[1657], cpar9, 5);
314 gMC->Gspos("ARE6", 1, "ABSM", 0., 0., dz, 0, "ONLY");
316 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
317 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
318 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
319 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
320 gMC->Gsvolu("ARE7", "CONE", idtmed[1612], cpar9, 5);
323 gMC->Gspos("ARE7", 1, "ABSM", 0., 0., dz, 0, "ONLY");
325 // TUNGSTEN REAR SHIELD INNER PART
328 cpar10[0] = d_rear / 2.;
329 cpar10[1] = zr * TMath::Tan(acc_min * kDegrad);
330 cpar10[2] = zr * TMath::Tan(theta_r * kDegrad);
331 cpar10[3] = cpar10[1] + d_rear * TMath::Tan(acc_min * kDegrad);
332 cpar10[4] = cpar10[2] + d_rear * TMath::Tan(theta_r * kDegrad);
333 gMC->Gsvolu("ARIN", "CONE", idtmed[1611], cpar10, 5);
335 gMC->Gspos("ARIN", 1, "ABSM", 0., 0., dz, 0, "ONLY");
337 // ELEMENTS OF THE BEAM PIPE TO BE POSITIONED INTO THE ABSORBER
339 // MOTHER VOLUME 1. SEGMENT
343 tpar[2] = (abs_c - abs_d) / 2.;
344 gMC->Gsvolu("AATU", "TUBE", idtmed[1655], tpar, 3);
346 tpar[1] = r_abs - .8;
347 tpar[0] = tpar[1] - .2;
348 tpar[2] = (abs_c - abs_d) / 2.;
349 gMC->Gsvolu("ATUB", "TUBE", idtmed[1649], tpar, 3);
351 gMC->Gspos("ATUB", 1, "AATU", 0., 0., dz, 0, "ONLY");
353 dz = (abs_c - abs_d) / 2. + abs_d;
354 gMC->Gspos("AATU", 1, "ABSM", 0., 0., dz, 0, "ONLY");
356 // MOTHER VOLUME 2. SEGMENT
358 cpar[0] = (abs_l - abs_c) / 2.;
362 cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad);
363 gMC->Gsvolu("AAT1", "CONE", idtmed[1655], cpar, 5);
365 cpar[0] = (abs_l - abs_c) / 2.;
367 cpar[1] = cpar[2] - .2;
369 cpar[3] = cpar[4] - .2;
370 gMC->Gsvolu("ATU1", "CONE", idtmed[1649], cpar, 5);
372 gMC->Gspos("ATU1", 1, "AAT1", 0., 0., dz, 0, "ONLY");
374 dz = (abs_l - abs_c) / 2. + abs_c;
375 gMC->Gspos("AAT1", 1, "ABSM", 0., 0., dz, 0, "ONLY");
377 gMC->Gspos("ABSM", 1, "ALIC", 0., 0., 0., 0, "ONLY");
379 // absorber support structure
381 // attention this element is positioned into ALIC
387 dpar[4] = abs_l * TMath::Tan(acc_max * kDegrad);
388 dpar[5] = dpar[4] + 4. / TMath::Cos(acc_max * kDegrad);
390 dpar[7] = TMath::Tan(acc_max * kDegrad) * 600;
391 dpar[8] = dpar[7] + 4. / TMath::Cos(acc_max * kDegrad);
395 gMC->Gsvolu("ASUP", "PCON", idtmed[1618], dpar, 12);
397 gMC->Gspos("ASUP", 1, "ALIC", 0., 0., dz, 0, "ONLY");
399 // Flange at the entrance of the absorber
404 gMC->Gsvolu("AF63", "TUBE", idtmed[1618], tpar, 3);
405 zpos = abs_d + tpar[2];
406 gMC->Gspos("AF63", 1, "ABSM", 0., 0., zpos, 0, "ONLY");
409 //_____________________________________________________________________________
410 void AliABSO::DrawModule()
413 // Draw a shaded view of the muon absorber
416 // Set everything unseen
417 gMC->Gsatt("*", "seen", -1);
419 // Set ALIC mother transparent
420 gMC->Gsatt("ALIC","SEEN",0);
422 // Set the volumes visible
423 gMC->Gsatt("ABSM","seen",1);
424 gMC->Gsatt("ANOS","seen",1);
425 gMC->Gsatt("ASST","seen",1);
426 gMC->Gsatt("AWFS","seen",1);
427 gMC->Gsatt("APBS","seen",1);
428 gMC->Gsatt("APOL","seen",1);
429 gMC->Gsatt("AWI1","seen",1);
430 gMC->Gsatt("AWI2","seen",1);
431 gMC->Gsatt("ACON","seen",1);
432 gMC->Gsatt("ARE1","seen",1);
433 gMC->Gsatt("ARE2","seen",1);
434 gMC->Gsatt("ARE3","seen",1);
435 gMC->Gsatt("ARE4","seen",1);
436 gMC->Gsatt("ARE5","seen",1);
437 gMC->Gsatt("ARE6","seen",1);
438 gMC->Gsatt("ARE7","seen",1);
439 gMC->Gsatt("ARIN","seen",1);
440 gMC->Gsatt("AATU","seen",1);
441 gMC->Gsatt("ATUB","seen",1);
442 gMC->Gsatt("AAT1","seen",1);
443 gMC->Gsatt("ATU1","seen",1);
444 gMC->Gsatt("ASUP","seen",1);
445 gMC->Gsatt("AF63","seen",1);
447 gMC->Gdopt("hide", "on");
448 gMC->Gdopt("shad", "on");
449 gMC->Gsatt("*", "fill", 7);
450 gMC->SetClipBox(".");
451 gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
453 gMC->Gdraw("alic", 40, 30, 0, 21.5, 15, .04, .04);
454 gMC->Gdhead(1111, "Muon Absorber");
455 gMC->Gdman(16, 6, "MAN");
456 gMC->Gdopt("hide","off");
459 //_____________________________________________________________________________
460 void AliABSO::CreateMaterials()
463 // Define materials for muon absorber
465 Int_t ISXFLD = gAlice->Field()->Integ();
466 Float_t SXMGMX = gAlice->Field()->Max();
468 Float_t apoly[2] = { 12.01,1. };
469 Float_t zpoly[2] = { 6.,1. };
470 Float_t wpoly[2] = { .33,.67 };
471 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,
472 28.086,39.1,40.08,55.85 };
473 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
474 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,
475 .337021,.013,.044,.014 };
476 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
477 Float_t zsteel[4] = { 26.,24.,28.,14. };
478 Float_t wsteel[4] = { .715,.18,.1,.005 };
480 Float_t epsil, stmin, tmaxfd, deemax, stemax;
483 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
484 AliMaterial(26, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
485 AliMaterial(46, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
488 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
489 AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
490 AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
493 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
494 AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
495 AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
498 AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
499 AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
500 AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
503 AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
504 AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
505 AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
508 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
509 AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
510 AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
513 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
514 AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
515 AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
518 AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
519 AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
520 AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
523 AliMixture(18, "POLYETHYLEN$", apoly, zpoly, .95, -2, wpoly);
525 // After a call with ratios by number (negative number of elements),
526 // the ratio array is changed to the ratio by weight, so all successive
527 // calls with the same array must specify the number of elements as
530 AliMixture(38, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
531 AliMixture(58, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
534 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
535 AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
536 AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
539 // Defines tracking media parameters.
541 epsil = .001; // Tracking precision,
542 stemax = -1.; // Maximum displacement for multiple scat
543 tmaxfd = -20.; // Maximum angle due to field deflection
544 deemax = -.3; // Maximum fractional energy loss, DLS
549 AliMedium(6, "C_C0 ", 6, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
550 AliMedium(26, "C_C1 ", 26, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
551 AliMedium(46, "C_C2 ", 46, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
554 AliMedium(9, "ALU_C0 ", 9, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
555 AliMedium(29, "ALU_C1 ", 29, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
556 AliMedium(49, "ALU_C2 ", 49, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
559 AliMedium(10, "FE_C0 ", 10, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
560 AliMedium(30, "FE_C1 ", 30, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
561 AliMedium(50, "FE_C2 ", 50, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
564 AliMedium(12, "W_C0 ", 12, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
565 AliMedium(32, "W_C1 ", 32, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
566 AliMedium(52, "W_C2 ", 52, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
569 AliMedium(13, "PB_C0 ", 13, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
570 AliMedium(33, "PB_C1 ", 33, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
571 AliMedium(53, "PB_C2 ", 53, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
574 AliMedium(15, "AIR_C0 ", 15, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
575 AliMedium(35, "AIR_C1 ", 35, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
576 AliMedium(55, "AIR_C2 ", 55, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
579 AliMedium(16, "VA_C0 ", 16, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
580 AliMedium(36, "VA_C1 ", 36, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
581 AliMedium(56, "VA_C2 ", 56, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
584 AliMedium(17, "CC_C0 ", 17, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
585 AliMedium(37, "CC_C1 ", 37, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
586 AliMedium(57, "CC_C2 ", 57, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
589 AliMedium(18, "CH2_C0 B ", 18, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
590 AliMedium(38, "CH2_C1 ", 38, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
591 AliMedium(58, "CH2_C2 ", 58, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
594 AliMedium(19, "ST_C0 ", 19, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
595 AliMedium(39, "ST_C1 ", 39, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
596 AliMedium(59, "ST_C3 ", 59, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
599 //_____________________________________________________________________________
603 // Initialisation of the muon absorber after it has been built
607 for(i=0;i<35;i++) printf("*");
608 printf(" ABSO_INIT ");
609 for(i=0;i<35;i++) printf("*");
612 for(i=0;i<80;i++) printf("*");