1 ///////////////////////////////////////////////////////////////////////////////
4 // This class contains the description of the muon absorber geometry //
8 <img src="gif/AliABSOClass.gif">
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>.
20 ///////////////////////////////////////////////////////////////////////////////
29 //_____________________________________________________________________________
33 // Default constructor
37 //_____________________________________________________________________________
38 AliABSO::AliABSO(const char *name, const char *title)
39 : AliDetector(name,title)
42 // Standard constructor
49 //_____________________________________________________________________________
50 void AliABSO::BuildGeometry()
53 // ROOT TNode geometry is built only for sensitive detectors
54 // and not for structural elements
58 //_____________________________________________________________________________
59 void AliABSO::CreateGeometry()
62 // Creation of the geometry of the muon absorber
66 <img src="gif/AliABSOTree.gif">
71 <img src="gif/AliABSO.gif">
75 AliMC* pMC = AliMC::GetMC();
77 Int_t *idtmed = gAlice->Idtmed();
79 Float_t d_pb, cpar[5], dpar[12], tpar[3], zpos,
80 cpar1[5], cpar2[5], cpar3[5], cpar4[5], cpar5[12],
81 cpar7[5], cpar8[5], cpar9[5], abs_c, abs_d,
82 abs_l, cpar10[5], r_abs;
83 Float_t theta1, theta2, abs_cc, d_rear, dz, zr,
84 z_cone, d_poly, z_nose, theta_open;
85 Float_t acc_min, acc_max, par[50], d_steel, z_w,
88 abs_d = 90.; // DEFINES DRIFT LENGTH
91 theta1 = 24.; // 1. angle defining the front absorber
92 theta2 = 5.; // 2. angle defining the front absorbe
93 acc_max = 9.; // ANGLE POLAIRE MAXIMUM
94 acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION
96 d_steel = 1.; // THICKNESS OF STEEL SUPPORT
99 abs_cc = 315.; // DEFINES LENGTH OF CARBON
101 //abs_s = 150.; // DEFINES W-SHIELD LENGTH
102 //abs_n = 80.; // START OF NOSE
117 //zcone_e = 859.0875;
132 // --- Outer shape of front absorber
138 par[5] = abs_d * TMath::Tan(theta1 * kDegrad);
141 par[8] = par[6] * TMath::Tan(theta1 * kDegrad);
144 par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2 * kDegrad);
147 par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max * kDegrad);
148 pMC->Gsvolu("ABSM", "PCON", idtmed[1605], par, 15);
150 // --- Now define all elements of the absorber
152 // TUNGSTEN NOSE SEGMENT BETWEEN Z=90 AND 112 CM
153 // SHAPED ALONG A 24 DEG LINE
155 cpar1[0] = (z_nose - abs_d) / 2.;
156 cpar1[1] = abs_d * TMath::Tan(acc_max * kDegrad) + d_steel;
157 cpar1[2] = abs_d * TMath::Tan(theta1 * kDegrad);
158 cpar1[3] = z_nose * TMath::Tan(acc_max * kDegrad) + d_steel;
159 cpar1[4] = z_nose * TMath::Tan(theta1 * kDegrad);
160 pMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar1, 5);
162 dz = cpar1[0] + abs_d;
163 pMC->Gspos("ANOS", 1, "ABSM", 0., 0., dz, 0, "ONLY");
165 // IRON SUPPORT STRUCTURE
167 cpar2[0] = (abs_l - abs_d) / 2.;
168 cpar2[1] = abs_d * TMath::Tan(acc_max * kDegrad);
169 cpar2[2] = cpar2[1] + d_steel;
170 cpar2[3] = abs_l * TMath::Tan(acc_max * kDegrad);
171 cpar2[4] = cpar2[3] + d_steel;
172 pMC->Gsvolu("ASST", "CONE", idtmed[1658], cpar2, 5);
173 dz = cpar2[0] + abs_d;
174 pMC->Gspos("ASST", 1, "ABSM", 0., 0., dz, 0, "ONLY");
176 // PB FRONT SHIELD INNER SEGMENT, ALSO POLYETHYLENE WAS
177 // CONSIDERED FOR THIS REGION
179 cpar3[0] = (z_cone - z_nose) / 2.;
181 cpar3[2] = cpar1[3] + d_poly;
182 cpar3[3] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel;
183 cpar3[4] = cpar3[3] + d_poly;
184 pMC->Gsvolu("AWFS", "CONE", idtmed[1652], cpar3, 5);
185 dz = cpar3[0] + z_nose;
186 pMC->Gspos("AWFS", 1, "ABSM", 0., 0., dz, 0, "ONLY");
194 cpar5[4] = z_nose * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly;
195 cpar5[5] = z_nose * TMath::Tan(theta1 * kDegrad);
197 cpar5[7] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly;
198 cpar5[8] = cpar5[7] + d_pb;
200 cpar5[10] = abs_l * TMath::Tan(acc_max * kDegrad) + d_steel + d_poly;
201 cpar5[11] = cpar5[10] + d_pb;
202 pMC->Gsvolu("APBS", "PCON", idtmed[1612], cpar5, 12);
204 pMC->Gspos("APBS", 1, "ABSM", 0., 0., dz, 0, "ONLY");
208 cpar4[0] = (abs_l - z_cone) / 2.;
209 cpar4[1] = z_cone * TMath::Tan(acc_max * kDegrad) + d_steel;
210 cpar4[2] = cpar4[1] + d_poly;
211 cpar4[3] = abs_l * TMath::Tan(acc_max * kDegrad) + d_steel;
212 cpar4[4] = cpar4[3] + d_poly;
213 pMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar4, 5);
214 dz = cpar4[0] + z_cone;
215 pMC->Gspos("APOL", 1, "ABSM", 0., 0., dz, 0, "ONLY");
217 // LEAD INNER SHIELD (inner radius const up to z=abs_c)
219 z_w = r_abs / TMath::Tan(acc_min * kDegrad);
220 cpar8[0] = (abs_c - z_w) / 2.;
222 cpar8[2] = r_abs + epsilon;
224 cpar8[4] = abs_c * TMath::Tan(acc_min * kDegrad);
225 pMC->Gsvolu("AWI1", "CONE", idtmed[1652], cpar8, 5);
227 pMC->Gspos("AWI1", 1, "ABSM", 0., 0., dz, 0, "ONLY");
229 // TUNGSTEN OPENING CONE UP TO THE END
231 cpar8[0] = (abs_l - abs_c) / 2.;
233 cpar8[2] = abs_c * TMath::Tan(acc_min * kDegrad);
234 cpar8[3] = cpar8[1] + cpar8[0] * 2. * TMath::Tan(theta_open * kDegrad);
235 cpar8[4] = abs_l * TMath::Tan(acc_min * kDegrad);
236 pMC->Gsvolu("AWI2", "CONE", idtmed[1651], cpar8, 5);
237 dz = cpar8[0] + abs_c;
238 pMC->Gspos("AWI2", 1, "ABSM", 0., 0., dz, 0, "ONLY");
242 cpar7[0] = (abs_l - d_rear - abs_cc) / 2.;
243 cpar7[1] = abs_cc * TMath::Tan(acc_min * kDegrad);
244 cpar7[2] = abs_cc * TMath::Tan(acc_max * kDegrad);
245 cpar7[3] = (abs_l - d_rear) * TMath::Tan(acc_min * kDegrad);
246 cpar7[4] = (abs_l - d_rear) * TMath::Tan(acc_max * kDegrad);
247 pMC->Gsvolu("ACON", "CONE", idtmed[1656], cpar7, 5);
248 dz = cpar7[0] + abs_cc;
249 pMC->Gspos("ACON", 1, "ABSM", 0., 0., dz, 0, "ONLY");
255 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
256 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
257 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
258 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
259 pMC->Gsvolu("ARE1", "CONE", idtmed[1652], cpar9, 5);
262 pMC->Gspos("ARE1", 1, "ABSM", 0., 0., dz, 0, "ONLY");
264 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
265 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
266 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
267 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
268 pMC->Gsvolu("ARE2", "CONE", idtmed[1657], cpar9, 5);
271 pMC->Gspos("ARE2", 1, "ABSM", 0., 0., dz, 0, "ONLY");
273 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
274 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
275 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
276 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
277 pMC->Gsvolu("ARE3", "CONE", idtmed[1652], cpar9, 5);
280 pMC->Gspos("ARE3", 1, "ABSM", 0., 0., dz, 0, "ONLY");
282 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
283 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
284 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
285 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
286 pMC->Gsvolu("ARE4", "CONE", idtmed[1657], cpar9, 5);
289 pMC->Gspos("ARE4", 1, "ABSM", 0., 0., dz, 0, "ONLY");
291 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
292 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
293 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
294 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
295 pMC->Gsvolu("ARE5", "CONE", idtmed[1652], cpar9, 5);
298 pMC->Gspos("ARE5", 1, "ABSM", 0., 0., dz, 0, "ONLY");
300 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
301 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
302 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
303 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
304 pMC->Gsvolu("ARE6", "CONE", idtmed[1657], cpar9, 5);
307 pMC->Gspos("ARE6", 1, "ABSM", 0., 0., dz, 0, "ONLY");
309 cpar9[1] = zr * TMath::Tan(theta_r * kDegrad);
310 cpar9[2] = zr * TMath::Tan(acc_max * kDegrad);
311 cpar9[3] = cpar9[1] + TMath::Tan(theta_r * kDegrad) * 5.;
312 cpar9[4] = cpar9[2] + TMath::Tan(acc_max * kDegrad) * 5.;
313 pMC->Gsvolu("ARE7", "CONE", idtmed[1612], cpar9, 5);
316 pMC->Gspos("ARE7", 1, "ABSM", 0., 0., dz, 0, "ONLY");
318 // TUNGSTEN REAR SHIELD INNER PART
321 cpar10[0] = d_rear / 2.;
322 cpar10[1] = zr * TMath::Tan(acc_min * kDegrad);
323 cpar10[2] = zr * TMath::Tan(theta_r * kDegrad);
324 cpar10[3] = cpar10[1] + d_rear * TMath::Tan(acc_min * kDegrad);
325 cpar10[4] = cpar10[2] + d_rear * TMath::Tan(theta_r * kDegrad);
326 pMC->Gsvolu("ARIN", "CONE", idtmed[1611], cpar10, 5);
328 pMC->Gspos("ARIN", 1, "ABSM", 0., 0., dz, 0, "ONLY");
330 // ELEMENTS OF THE BEAM PIPE TO BE POSITIONED INTO THE ABSORBER
332 // MOTHER VOLUME 1. SEGMENT
336 tpar[2] = (abs_c - abs_d) / 2.;
337 pMC->Gsvolu("AATU", "TUBE", idtmed[1655], tpar, 3);
339 tpar[1] = r_abs - .8;
340 tpar[0] = tpar[1] - .2;
341 tpar[2] = (abs_c - abs_d) / 2.;
342 pMC->Gsvolu("ATUB", "TUBE", idtmed[1649], tpar, 3);
344 pMC->Gspos("ATUB", 1, "AATU", 0., 0., dz, 0, "ONLY");
346 dz = (abs_c - abs_d) / 2. + abs_d;
347 pMC->Gspos("AATU", 1, "ABSM", 0., 0., dz, 0, "ONLY");
349 // MOTHER VOLUME 2. SEGMENT
351 cpar[0] = (abs_l - abs_c) / 2.;
355 cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad);
356 pMC->Gsvolu("AAT1", "CONE", idtmed[1655], cpar, 5);
358 cpar[0] = (abs_l - abs_c) / 2.;
360 cpar[1] = cpar[2] - .2;
362 cpar[3] = cpar[4] - .2;
363 pMC->Gsvolu("ATU1", "CONE", idtmed[1649], cpar, 5);
365 pMC->Gspos("ATU1", 1, "AAT1", 0., 0., dz, 0, "ONLY");
367 dz = (abs_l - abs_c) / 2. + abs_c;
368 pMC->Gspos("AAT1", 1, "ABSM", 0., 0., dz, 0, "ONLY");
370 pMC->Gspos("ABSM", 1, "ALIC", 0., 0., 0., 0, "ONLY");
372 // absorber support structure
374 // attention this element is positioned into ALIC
380 dpar[4] = abs_l * TMath::Tan(acc_max * kDegrad);
381 dpar[5] = dpar[4] + 4. / TMath::Cos(acc_max * kDegrad);
383 dpar[7] = TMath::Tan(acc_max * kDegrad) * 600;
384 dpar[8] = dpar[7] + 4. / TMath::Cos(acc_max * kDegrad);
388 pMC->Gsvolu("ASUP", "PCON", idtmed[1618], dpar, 12);
390 pMC->Gspos("ASUP", 1, "ALIC", 0., 0., dz, 0, "ONLY");
392 // Flange at the entrance of the absorber
397 pMC->Gsvolu("AF63", "TUBE", idtmed[1618], tpar, 3);
398 zpos = abs_d + tpar[2];
399 pMC->Gspos("AF63", 1, "ABSM", 0., 0., zpos, 0, "ONLY");
402 //_____________________________________________________________________________
403 void AliABSO::DrawDetector()
406 // Draw a shaded view of the muon absorber
409 AliMC* pMC = AliMC::GetMC();
411 // Set everything unseen
412 pMC->Gsatt("*", "seen", -1);
414 // Set ALIC mother transparent
415 pMC->Gsatt("ALIC","SEEN",0);
417 // Set the volumes visible
418 pMC->Gsatt("ABSM","seen",1);
419 pMC->Gsatt("ANOS","seen",1);
420 pMC->Gsatt("ASST","seen",1);
421 pMC->Gsatt("AWFS","seen",1);
422 pMC->Gsatt("APBS","seen",1);
423 pMC->Gsatt("APOL","seen",1);
424 pMC->Gsatt("AWI1","seen",1);
425 pMC->Gsatt("AWI2","seen",1);
426 pMC->Gsatt("ACON","seen",1);
427 pMC->Gsatt("ARE1","seen",1);
428 pMC->Gsatt("ARE2","seen",1);
429 pMC->Gsatt("ARE3","seen",1);
430 pMC->Gsatt("ARE4","seen",1);
431 pMC->Gsatt("ARE5","seen",1);
432 pMC->Gsatt("ARE6","seen",1);
433 pMC->Gsatt("ARE7","seen",1);
434 pMC->Gsatt("ARIN","seen",1);
435 pMC->Gsatt("AATU","seen",1);
436 pMC->Gsatt("ATUB","seen",1);
437 pMC->Gsatt("AAT1","seen",1);
438 pMC->Gsatt("ATU1","seen",1);
439 pMC->Gsatt("ASUP","seen",1);
440 pMC->Gsatt("AF63","seen",1);
442 pMC->Gdopt("hide", "on");
443 pMC->Gdopt("shad", "on");
444 pMC->Gsatt("*", "fill", 7);
445 pMC->SetClipBox(".");
446 pMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
448 pMC->Gdraw("alic", 40, 30, 0, 21.5, 15, .04, .04);
449 pMC->Gdhead(1111, "Muon Absorber");
450 pMC->Gdman(16, 6, "MAN");
451 pMC->Gdopt("hide","off");
454 //_____________________________________________________________________________
455 void AliABSO::CreateMaterials()
458 // Define materials for muon absorber
460 Int_t ISXFLD = gAlice->Field()->Integ();
461 Float_t SXMGMX = gAlice->Field()->Max();
463 Float_t apoly[2] = { 12.01,1. };
464 Float_t zpoly[2] = { 6.,1. };
465 Float_t wpoly[2] = { .33,.67 };
466 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,
467 28.086,39.1,40.08,55.85 };
468 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
469 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,
470 .337021,.013,.044,.014 };
471 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
472 Float_t zsteel[4] = { 26.,24.,28.,14. };
473 Float_t wsteel[4] = { .715,.18,.1,.005 };
475 Float_t epsil, stmin, tmaxfd, deemax, stemax;
478 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
479 AliMaterial(26, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
480 AliMaterial(46, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
483 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
484 AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
485 AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
488 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
489 AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
490 AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
493 AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
494 AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
495 AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
498 AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
499 AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
500 AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
503 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
504 AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
505 AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
508 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
509 AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
510 AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
513 AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
514 AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
515 AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
518 AliMixture(18, "POLYETHYLEN$", apoly, zpoly, .95, -2, wpoly);
520 // After a call with ratios by number (negative number of elements),
521 // the ratio array is changed to the ratio by weight, so all successive
522 // calls with the same array must specify the number of elements as
525 AliMixture(38, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
526 AliMixture(58, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
529 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
530 AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
531 AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
534 // Defines tracking media parameters.
536 epsil = .001; // Tracking precision,
537 stemax = -1.; // Maximum displacement for multiple scat
538 tmaxfd = -20.; // Maximum angle due to field deflection
539 deemax = -.3; // Maximum fractional energy loss, DLS
544 AliMedium(1606, "C_C0 ", 6, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
545 AliMedium(1626, "C_C1 ", 26, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
546 AliMedium(1646, "C_C2 ", 46, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
549 AliMedium(1609, "ALU_C0 ", 9, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
550 AliMedium(1629, "ALU_C1 ", 29, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
551 AliMedium(1649, "ALU_C2 ", 49, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
554 AliMedium(1610, "FE_C0 ", 10, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
555 AliMedium(1630, "FE_C1 ", 30, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
556 AliMedium(1650, "FE_C2 ", 50, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
559 AliMedium(1612, "W_C0 ", 12, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
560 AliMedium(1632, "W_C1 ", 32, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
561 AliMedium(1652, "W_C2 ", 52, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
564 AliMedium(1613, "PB_C0 ", 13, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
565 AliMedium(1633, "PB_C1 ", 33, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
566 AliMedium(1653, "PB_C2 ", 53, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
569 AliMedium(1615, "AIR_C0 ", 15, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
570 AliMedium(1635, "AIR_C1 ", 35, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
571 AliMedium(1655, "AIR_C2 ", 55, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
574 AliMedium(1616, "VA_C0 ", 16, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
575 AliMedium(1636, "VA_C1 ", 36, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
576 AliMedium(1656, "VA_C2 ", 56, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
579 AliMedium(1617, "CC_C0 ", 17, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
580 AliMedium(1637, "CC_C1 ", 37, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
581 AliMedium(1657, "CC_C2 ", 57, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
584 AliMedium(1618, "CH2_C0 B ", 18, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
585 AliMedium(1638, "CH2_C1 ", 38, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
586 AliMedium(1658, "CH2_C2 ", 58, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
589 AliMedium(1619, "ST_C0 ", 19, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
590 AliMedium(1639, "ST_C1 ", 39, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
591 AliMedium(1659, "ST_C3 ", 59, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
594 //_____________________________________________________________________________
598 // Initialisation of the muon absorber after it has been built
602 for(i=0;i<35;i++) printf("*");
603 printf(" ABSO_INIT ");
604 for(i=0;i<35;i++) printf("*");
607 for(i=0;i<80;i++) printf("*");
611 //_____________________________________________________________________________
612 void AliABSO::StepManager()
615 // Procedure called at every step in the muon absorber