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 **************************************************************************/
18 Revision 1.1 2000/01/12 15:44:03 morsch
19 Standard version of SHIL
23 ///////////////////////////////////////////////////////////////////////////////
25 // Muon Shield Class //
26 // This class contains a description of the muon shield //
30 <img src="picts/AliSHILClass.gif">
35 ///////////////////////////////////////////////////////////////////////////////
37 #include "AliSHILv0.h"
43 //_____________________________________________________________________________
44 AliSHILv0::AliSHILv0()
47 // Default constructor for muon shield
51 //_____________________________________________________________________________
52 AliSHILv0::AliSHILv0(const char *name, const char *title)
56 // Standard constructor for muon shield
63 //_____________________________________________________________________________
64 void AliSHILv0::CreateGeometry()
67 // Build muon shield geometry
72 <img src="picts/AliSHILv0.gif">
77 <img src="picts/AliSHILv0Tree.gif">
81 Float_t cpar[5], cpar0[5], tpar[3], par1[39], par2[21], par3[27], par4[21], par0[42];
84 Int_t *idtmed = fIdtmed->GetArray()-1699;
86 #include "ShieldConst.h"
94 Float_t dl=(zvac12-abs_l+d_rear)/2.;
99 par0[5] = (abs_l-d_rear) * TMath::Tan(acc_min);
101 par0[6] = -dl+d_rear;
103 par0[8] = abs_l * TMath::Tan(acc_min);
105 par0[9] = -dl+d_rear;
109 par0[12] = -dz+zvac4;
113 par0[15] = -dz+zvac4;
117 par0[18] = -dz+zvac6;
121 par0[21] = -dz+zvac6;
123 par0[23] = zvac6 * TMath::Tan(acc_min);
125 par0[24] = -dz+zcone_e;
129 par0[27] = -dz+zvac10;
133 par0[30] = -dz+zvac10;
137 par0[33] = -dz+zvac11;
141 par0[36] = -dz+zvac11;
145 par0[39] = -dz+zvac12;
149 gMC->Gsvolu("YMOT", "PCON", idtmed[1755], par0, 42);
151 gMC->Gspos("YMOT", 1, "ALIC", 0., 0., dz, 0, "ONLY");
157 // First section: bellows below and behind front absorber
164 dl=(zvac4-abs_l+d_rear)/2.;
167 par1[4] = r_abs+(abs_l-d_rear-abs_c) * TMath::Tan(theta_open1);
168 par1[5] = (abs_l-d_rear)* TMath::Tan(acc_min);
170 par1[6] = -dl+zvac1-(abs_l-d_rear);
171 par1[7] = r_abs+ (zvac1-abs_c) * TMath::Tan(theta_open1);
172 par1[8] = zvac1 * TMath::Tan(acc_min);
174 par1[9] = par1[6]+dr11;
175 par1[10] = par1[7]+dr11;
176 par1[11] = (zvac1+dr11) * TMath::Tan(acc_min);
178 par1[12] = -dl+d_rear;
180 par1[14] = abs_l * TMath::Tan(acc_min);
182 par1[15] = -dl+d_rear;
186 par1[18] = -dl+(zvac1+dr11+dB1-abs_l+d_rear);
190 par1[21] = par1[18]+dr12;
191 par1[22] = par1[19]+dr12;
194 par1[24] = par1[21]+dF1;
198 par1[27] = par1[24]+dr12;
199 par1[28] = par1[25]-dr12;
202 par1[30] = par1[27]+dB1;
206 par1[33] = par1[30]+dr13;
207 par1[34] = par1[31]-dr13;
210 par1[36] = -dl+zvac4-abs_l+d_rear;
211 par1[37] = par1[34]+(zvac4-zvac3)*TMath::Tan(theta_open2);
216 gMC->Gsvolu("YGO1", "PCON", idtmed[1760], par1, 39);
218 for (Int_t i=4; i<38; i+=3) par1[i] = 0;
219 gMC->Gsvolu("YMO1", "PCON", idtmed[1755], par1, 39);
221 gMC->Gspos("YGO1", 1, "YMO1", 0., 0., 0., 0, "ONLY");
224 gMC->Gspos("YMO1", 1, "YMOT", 0., 0., DZ, 0, "ONLY");
229 tpar[0]=R11-dRSteel1;
232 gMC->Gsvolu("YSE1", "TUBE", idtmed[1718], tpar, 3);
235 gMC->Gspos("YSE1", 1, "YGO1", 0., 0., dz, 0, "ONLY");
238 // 1st section: vacuum system
246 gMC->Gsvolu("YB11", "TUBE", idtmed[1758], tpar, 3);
251 tpar[2]=(lB1/2.-2.*eB1)/2.;
252 gMC->Gsvolu("YB12", "TUBE", idtmed[1758], tpar, 3);
258 gMC->Gsvolu("YB13", "TUBE", idtmed[1758], tpar, 3);
265 gMC->Gsvolu("YBU1", "TUBE", idtmed[1755], tpar, 3);
268 gMC->Gspos("YB13", 1, "YBU1", 0., 0., dz, 0, "ONLY");
271 gMC->Gspos("YB11", 1, "YBU1", 0., 0., dz, 0, "ONLY");
274 gMC->Gspos("YB12", 1, "YBU1", 0., 0., dz, 0, "ONLY");
277 gMC->Gspos("YB11", 2, "YBU1", 0., 0., dz, 0, "ONLY");
280 gMC->Gspos("YB13", 2, "YBU1", 0., 0., dz, 0, "ONLY");
286 gMC->Gsvolu("YBM1", "TUBE", idtmed[1755], tpar, 3);
288 for (Int_t i=0; i<10; i++) {
289 gMC->Gspos("YBU1", i+1 , "YBM1", 0., 0.,dz , 0, "ONLY");
292 dz=-dl+(zvac1-abs_l+d_rear)+dr11+tpar[2];
293 gMC->Gspos("YBM1", 1, "YMO1", 0., 0., dz, 0, "ONLY");
295 dz=dl-dr13-(zvac4-zvac3)-tpar[2]-(dr11-dr13);
296 gMC->Gspos("YBM1", 2, "YMO1", 0., 0., dz, 0, "ONLY");
304 gMC->Gsvolu("YFM1", "TUBE", idtmed[1755], tpar, 3);
306 tpar[0]=rF1-d_flange;
309 gMC->Gsvolu("YF11", "TUBE", idtmed[1758], tpar, 3);
310 gMC->Gspos("YF11", 1, "YFM1", 0., 0., 0., 0, "ONLY");
313 tpar[1]=rF1-d_flange;
315 gMC->Gsvolu("YF12", "TUBE", idtmed[1758], tpar, 3);
317 gMC->Gspos("YF12", 1, "YFM1", 0., 0., dz, 0, "ONLY");
319 gMC->Gspos("YF12", 2, "YFM1", 0., 0., dz, 0, "ONLY");
321 dz=-dl+(zvac2-abs_l+d_rear);
322 gMC->Gspos("YFM1", 2, "YMO1", 0., 0., dz, 0, "ONLY");
326 // pipe between flange and bellows
329 tpar[2]=2.*(dB1+dr12-10.*lB1)/4.;
330 gMC->Gsvolu("YPF1", "TUBE", idtmed[1758], tpar, 3);
331 dz=-dl+(zvac2-abs_l+d_rear)-dF1/2.-tpar[2];
332 gMC->Gspos("YPF1", 1, "YMO1", 0., 0., dz, 0, "ONLY");
333 dz=-dl+(zvac2-abs_l+d_rear)+dF1/2.+tpar[2];
334 gMC->Gspos("YPF1", 2, "YMO1", 0., 0., dz, 0, "ONLY");
337 // pipe and heating jackets outside bellows
340 cpar0[0]=(zvac1-abs_l+d_rear)/2;
341 cpar0[1]=r_vacu+(abs_l-d_rear-abs_c)*TMath::Tan(theta_open1);
342 cpar0[2]=r_abs +(abs_l-d_rear-abs_c)*TMath::Tan(theta_open1);
343 cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open1);
344 cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open1);
345 gMC->Gsvolu("YV11", "CONE", idtmed[1758], cpar0, 5);
349 cpar[1]=cpar0[1]+d_tube;
350 cpar[2]=cpar0[1]+d_tube+d_insu;
351 cpar[3]=cpar0[3]+d_tube;
352 cpar[4]=cpar0[3]+d_tube+d_insu;
353 gMC->Gsvolu("YI11", "CONE", idtmed[1753], cpar, 5);
354 gMC->Gspos("YI11", 1, "YV11", 0., 0., 0., 0, "ONLY");
357 cpar[1]=cpar0[2]-d_prot-d_free;
358 cpar[2]=cpar0[2]-d_prot;
359 cpar[3]=cpar0[4]-d_prot-d_free;
360 cpar[4]=cpar0[4]-d_prot;
361 gMC->Gsvolu("YP11", "CONE", idtmed[1755], cpar, 5);
362 gMC->Gspos("YP11", 1, "YV11", 0., 0., 0., 0, "ONLY");
365 gMC->Gspos("YV11", 1, "YMO1", 0., 0., dz, 0, "ONLY");
368 cpar0[0]=(zvac4-zvac3)/2;
371 cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open2);
372 cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open2);
373 gMC->Gsvolu("YV12", "CONE", idtmed[1758], cpar0, 5);
377 cpar[1]=cpar0[1]+d_tube;
378 cpar[2]=cpar0[1]+d_tube+d_insu;
379 cpar[3]=cpar0[3]+d_tube;
380 cpar[4]=cpar0[3]+d_tube+d_insu;
381 gMC->Gsvolu("YI12", "CONE", idtmed[1753], cpar, 5);
382 gMC->Gspos("YI12", 1, "YV12", 0., 0., 0., 0, "ONLY");
385 cpar[1]=cpar0[2]-d_prot-d_free;
386 cpar[2]=cpar0[2]-d_prot;
387 cpar[3]=cpar0[4]-d_prot-d_free;
388 cpar[4]=cpar0[4]-d_prot;
389 gMC->Gsvolu("YP12", "CONE", idtmed[1755], cpar, 5);
390 gMC->Gspos("YP12", 1, "YV12", 0., 0., 0., 0, "ONLY");
393 gMC->Gspos("YV12", 1, "YMO1", 0., 0., dz, 0, "ONLY");
404 par2[4] = r2+(zvac4-zvac3) * TMath::Tan(theta_open2);
411 par2[9] = -dl+(zvac6-zvac4);
412 par2[10] = r2+(zvac6-zvac3) * TMath::Tan(theta_open2);
415 par2[12] = -dl+(zvac6-zvac4);
417 par2[14] = zvac6*TMath::Tan(acc_min);
419 par2[15] = -dl+(zcone_e-zvac4);
420 par2[16] = r2+(zcone_e-zvac3) * TMath::Tan(theta_open2);
423 par2[18] = -dl+(zvac7-zvac4);
424 par2[19] = r2+(zvac7-zvac3) * TMath::Tan(theta_open2);
428 gMC->Gsvolu("YGO2", "PCON", idtmed[1760], par2, 21);
430 for (Int_t i=4; i<20; i+=3) par2[i] = 0;
432 gMC->Gsvolu("YMO2", "PCON", idtmed[1755], par2, 21);
433 gMC->Gspos("YGO2", 1, "YMO2", 0., 0., 0., 0, "ONLY");
436 gMC->Gspos("YMO2", 1, "YMOT", 0., 0., DZ, 0, "ONLY");
441 tpar[0]=R11-dRSteel1;
444 gMC->Gsvolu("YS21", "TUBE", idtmed[1718], tpar, 3);
446 gMC->Gspos("YS21", 1, "YGO2", 0., 0., dz, 0, "ONLY");
448 tpar[0]=R21-dRSteel2;
450 tpar[2]=(zvac6-zvac5)/2.;
451 gMC->Gsvolu("YS22", "TUBE", idtmed[1718], tpar, 3);
453 gMC->Gspos("YS22", 1, "YGO2", 0., 0., dz, 0, "ONLY");
457 cpar[1]=R21-dRSteel2;
458 cpar[2]=zvac6 * TMath::Tan(acc_min);
460 cpar[4]=cpar[2]+4.*TMath::Tan(acc_min);
462 gMC->Gsvolu("YS23", "CONE", idtmed[1718], cpar, 5);
464 gMC->Gspos("YS23", 1, "YGO2", 0., 0., dz, 0, "ONLY");
467 cpar[0]=(zcone_e-zvac6-4.)/2;
469 cpar[4]=cpar[2]+2.*cpar[0]*TMath::Tan(acc_min);
470 cpar[1]=cpar[2]-dRSteel2;
471 cpar[3]=cpar[4]-dRSteel2;
473 gMC->Gsvolu("YS24", "CONE", idtmed[1718], cpar, 5);
475 gMC->Gspos("YS24", 1, "YGO2", 0., 0., dz, 0, "ONLY");
480 tpar[2]=(zvac7-zcone_e)/2.;
482 gMC->Gsvolu("YS25", "TUBE", idtmed[1718], tpar, 3);
484 gMC->Gspos("YS25", 1, "YGO2", 0., 0., dz, 0, "ONLY");
488 // 2nd section: vacuum system
490 cpar0[0]=(zvac7-zvac4)/2;
491 cpar0[1]=r2-d_vacu+(zvac4-zvac3)*TMath::Tan(theta_open2);
492 cpar0[2]=r2 +(zvac4-zvac3)*TMath::Tan(theta_open2);
493 cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open2);
494 cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open2);
495 gMC->Gsvolu("YV21", "CONE", idtmed[1758], cpar0, 5);
499 cpar[1]=cpar0[1]+d_tube;
500 cpar[2]=cpar0[1]+d_tube+d_insu;
501 cpar[3]=cpar0[3]+d_tube;
502 cpar[4]=cpar0[3]+d_tube+d_insu;
503 gMC->Gsvolu("YI21", "CONE", idtmed[1753], cpar, 5);
504 gMC->Gspos("YI21", 1, "YV21", 0., 0., 0., 0, "ONLY");
507 cpar[1]=cpar0[2]-d_prot-d_free;
508 cpar[2]=cpar0[2]-d_prot;
509 cpar[3]=cpar0[4]-d_prot-d_free;
510 cpar[4]=cpar0[4]-d_prot;
511 gMC->Gsvolu("YP21", "CONE", idtmed[1755], cpar, 5);
512 gMC->Gspos("YP21", 1, "YV21", 0., 0., 0., 0, "ONLY");
515 gMC->Gspos("YV21", 1, "YMO2", 0., 0., dz, 0, "ONLY");
518 // Third Section: Bellows and Flange
526 par3[4] = r2+(zvac7-zvac3) * TMath::Tan(theta_open2);
530 par3[7] = par3[4]+dr21;
533 par3[9] = par3[6]+dB2;
537 par3[12] = par3[9]+dr22;
538 par3[13] = par3[10]+dr22;
541 par3[15] = par3[12]+dF2;
545 par3[18] = par3[15]+dr22;
546 par3[19] = par3[16]-dr22;
549 par3[21] = par3[18]+dB2;
553 par3[24] = par3[21]+dr23;
554 par3[25] = par3[22]-dr23;
559 gMC->Gsvolu("YGO3", "PCON", idtmed[1760], par3, 27);
561 for (Int_t i=4; i<26; i+=3) par3[i] = 0;
563 gMC->Gsvolu("YMO3", "PCON", idtmed[1755], par3, 27);
564 gMC->Gspos("YGO3", 1, "YMO3", 0., 0., 0., 0, "ONLY");
571 gMC->Gsvolu("YS31", "TUBE", idtmed[1718], tpar, 3);
572 gMC->Gspos("YS31", 1, "YGO3", 0., 0., 0., 0, "ONLY");
574 gMC->Gspos("YMO3", 1, "YMOT", 0., 0., DZ, 0, "ONLY");
578 // 3rd section: vacuum system
586 gMC->Gsvolu("YB21", "TUBE", idtmed[1758], tpar, 3);
591 tpar[2]=(lB2/2.-2.*eB2)/2.;
592 gMC->Gsvolu("YB22", "TUBE", idtmed[1758], tpar, 3);
598 gMC->Gsvolu("YB23", "TUBE", idtmed[1758], tpar, 3);
605 gMC->Gsvolu("YBU2", "TUBE", idtmed[1755], tpar, 3);
608 gMC->Gspos("YB23", 1, "YBU2", 0., 0., dz, 0, "ONLY");
611 gMC->Gspos("YB21", 1, "YBU2", 0., 0., dz, 0, "ONLY");
614 gMC->Gspos("YB22", 1, "YBU2", 0., 0., dz, 0, "ONLY");
617 gMC->Gspos("YB21", 2, "YBU2", 0., 0., dz, 0, "ONLY");
620 gMC->Gspos("YB23", 2, "YBU2", 0., 0., dz, 0, "ONLY");
626 gMC->Gsvolu("YBM2", "TUBE", idtmed[1755], tpar, 3);
628 for (Int_t i=0; i<7; i++) {
629 gMC->Gspos("YBU2", i+1 , "YBM2", 0., 0.,dz , 0, "ONLY");
634 gMC->Gspos("YBM2", 1, "YMO3", 0., 0., dz, 0, "ONLY");
637 gMC->Gspos("YBM2", 2, "YMO3", 0., 0., dz, 0, "ONLY");
645 gMC->Gsvolu("YFM2", "TUBE", idtmed[1755], tpar, 3);
647 tpar[0]=rF2-d_flange;
650 gMC->Gsvolu("YF21", "TUBE", idtmed[1758], tpar, 3);
651 gMC->Gspos("YF21", 1, "YFM2", 0., 0., 0., 0, "ONLY");
654 tpar[1]=rF2-d_flange;
656 gMC->Gsvolu("YF22", "TUBE", idtmed[1758], tpar, 3);
658 gMC->Gspos("YF22", 1, "YFM2", 0., 0., dz, 0, "ONLY");
660 gMC->Gspos("YF22", 2, "YFM2", 0., 0., dz, 0, "ONLY");
663 gMC->Gspos("YFM2", 2, "YMO3", 0., 0., dz, 0, "ONLY");
667 // pipe between flange and bellows
670 tpar[2]=2.*(dB2+dr22-7.*lB2)/4.;
671 gMC->Gsvolu("YPF2", "TUBE", idtmed[1758], tpar, 3);
672 dz=dr21/2.-dr23/2.-dF2/2.-tpar[2];
673 gMC->Gspos("YPF2", 1, "YMO3", 0., 0., dz, 0, "ONLY");
674 dz=dr21/2.-dr23/2.+dF2/2.+tpar[2];
675 gMC->Gspos("YPF2", 2, "YMO3", 0., 0., dz, 0, "ONLY");
678 // 4th section: rear shield and closing cone
683 dl=(zvac12-zvac9)/2.;
689 par4[6] = -dl+(zvac10-zvac9);
690 par4[7] = r3+(zvac10-zvac9) * TMath::Tan(theta_open3);
697 par4[12] = -dl+(zvac11-zvac9);
698 par4[13] = r3+(zvac11-zvac9) * TMath::Tan(theta_open3);
705 par4[18] = -dl+(zvac12-zvac9);
709 gMC->Gsvolu("YGO4", "PCON", idtmed[1760], par4, 21);
710 for (Int_t i=4; i<20; i+=3) par4[i] = 0;
713 gMC->Gsvolu("YMO4", "PCON", idtmed[1755], par4, 21);
714 gMC->Gspos("YGO4", 1, "YMO4", 0., 0., 0., 0, "ONLY");
718 gMC->Gspos("YMO4", 1, "YMOT", 0., 0., DZ, 0, "ONLY");
721 // Closing concrete cone
723 cpar[0]=(zvac12-zvac11)/2.;
724 cpar[1] = r3+(zvac11-zvac9) * TMath::Tan(theta_open3);
725 cpar[2] = cpar[1]+0.001;
728 gMC->Gsvolu("YCC4", "CONE", idtmed[1752], cpar, 5);
730 gMC->Gspos("YCC4", 1, "YGO4", 0., 0., dz, 0, "ONLY");
737 tpar[2]=(zvac10-zvac9)/2.;
738 gMC->Gsvolu("YS41", "TUBE", idtmed[1718], tpar, 3);
740 gMC->Gspos("YS41", 1, "YGO4", 0., 0., dz, 0, "ONLY");
746 gMC->Gsvolu("YS42", "TUBE", idtmed[1718], tpar, 3);
748 gMC->Gspos("YS42", 1, "YGO4", 0., 0., dz, 0, "ONLY");
751 tpar[0]=R41-dRSteel2;
753 tpar[2]=(zvac11-zvac10-4)/2.;
754 gMC->Gsvolu("YS43", "TUBE", idtmed[1718], tpar, 3);
756 gMC->Gspos("YS43", 1, "YGO4", 0., 0., dz, 0, "ONLY");
762 tpar[2]=(zvac11-zvac10)/2.;
763 gMC->Gsvolu("YPBI", "TUBE", idtmed[1752], tpar, 3);
765 gMC->Gspos("YPBI", 1, "YGO4", 0., 0., dz, 0, "ONLY");
769 tpar[2]=(zvac11-zvac10)/2.;
770 gMC->Gsvolu("YPBO", "TUBE", idtmed[1712], tpar, 3);
771 gMC->Gspos("YPBO", 1, "YPBI", 0., 0., 0., 0, "ONLY");
779 tpar[2]=(zvac12-zvac11)/2.;
780 gMC->Gsvolu("YFEI", "TUBE", idtmed[1749], tpar, 3);
782 gMC->Gspos("YFEI", 1, "YGO4", 0., 0., dz, 0, "ONLY");
787 gMC->Gsvolu("YFEO", "TUBE", idtmed[1709], tpar, 3);
788 dz=-(zvac12-zvac11)/2.+tpar[2];
789 gMC->Gspos("YFEO", 1, "YFEI", 0., 0., dz, 0, "ONLY");
792 // 4th section: vacuum system
794 // up to closing cone
795 cpar0[0]=(zvac11-zvac9)/2;
798 cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open3);
799 cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open3);
800 gMC->Gsvolu("YV31", "CONE", idtmed[1758], cpar0, 5);
804 cpar[1]=cpar0[1]+d_tube;
805 cpar[2]=cpar0[1]+d_tube+d_insu;
806 cpar[3]=cpar0[3]+d_tube;
807 cpar[4]=cpar0[3]+d_tube+d_insu;
808 gMC->Gsvolu("YI31", "CONE", idtmed[1753], cpar, 5);
809 gMC->Gspos("YI31", 1, "YV31", 0., 0., 0., 0, "ONLY");
812 cpar[1]=cpar0[2]-d_prot-d_free;
813 cpar[2]=cpar0[2]-d_prot;
814 cpar[3]=cpar0[4]-d_prot-d_free;
815 cpar[4]=cpar0[4]-d_prot;
816 gMC->Gsvolu("YP31", "CONE", idtmed[1755], cpar, 5);
817 gMC->Gspos("YP31", 1, "YV31", 0., 0., 0., 0, "ONLY");
820 gMC->Gspos("YV31", 1, "YMO4", 0., 0., dz, 0, "ONLY");
823 cpar0[0]=(zvac12-zvac11)/2;
824 cpar0[1]=r3-d_vacu+(zvac11-zvac9)*TMath::Tan(theta_open3);
825 cpar0[2]=r3 +(zvac11-zvac9)*TMath::Tan(theta_open3);
828 gMC->Gsvolu("YV32", "CONE", idtmed[1758], cpar0, 5);
832 cpar[1]=cpar0[1]+d_tube;
833 cpar[2]=cpar0[1]+d_tube+d_insu;
834 cpar[3]=cpar0[3]+d_tube;
835 cpar[4]=cpar0[3]+d_tube+d_insu;
836 gMC->Gsvolu("YI32", "CONE", idtmed[1753], cpar, 5);
837 gMC->Gspos("YI32", 1, "YV32", 0., 0., 0., 0, "ONLY");
840 cpar[1]=cpar0[2]-d_prot-d_free;
841 cpar[2]=cpar0[2]-d_prot;
842 cpar[3]=cpar0[4]-d_prot-d_free;
843 cpar[4]=cpar0[4]-d_prot;
844 gMC->Gsvolu("YP32", "CONE", idtmed[1755], cpar, 5);
845 gMC->Gspos("YP32", 1, "YV32", 0., 0., 0., 0, "ONLY");
848 gMC->Gspos("YV32", 1, "YMO4", 0., 0., dz, 0, "ONLY");
855 tpar[2] = (zfil_out - zfil_in) / 2.;
856 gMC->Gsvolu("YFIM", "TUBE", idtmed[1749], tpar, 3);
857 dz = (zfil_in + zfil_out) / 2.;
859 gMC->Gsvolu("YFII","TUBE", idtmed[1709], tpar, 3);
860 gMC->Gspos("YFII", 1, "YFIM", 0., 0., 0., 0, "ONLY");
861 gMC->Gspos("YFIM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
863 // Shielding close to chamber
866 cpar[0]=(zch1-dzch-1.-abs_l)/2.;
868 cpar[2]=abs_l*TMath::Tan(acc_min);
870 cpar[4]=(abs_l+2.*cpar[0])*TMath::Tan(acc_min);
871 gMC->Gsvolu("YCS1", "CONE", idtmed[1720], cpar, 5);
873 gMC->Gspos("YCS1", 1, "ALIC", 0., 0., dz, 0, "ONLY");
875 cpar[0]=(zvac4-(zch1+dzch+1.))/2.;
877 cpar[2]=(zvac4-2.*cpar[0])*TMath::Tan(acc_min);
880 gMC->Gsvolu("YCS2", "CONE", idtmed[1720], cpar, 5);
882 gMC->Gspos("YCS2", 1, "ALIC", 0., 0., dz, 0, "ONLY");
885 cpar[0]=(zch2-dzch-1.-zvac4)/2.;
887 cpar[2]=zvac4*TMath::Tan(acc_min);
889 cpar[4]=(zvac4+2.*cpar[0])*TMath::Tan(acc_min);
890 gMC->Gsvolu("YCS3", "CONE", idtmed[1720], cpar, 5);
892 gMC->Gspos("YCS3", 1, "ALIC", 0., 0., dz, 0, "ONLY");
895 cpar[0]=(zvac6-(zch2+dzch+1.))/2.;
897 cpar[2]=(zvac6-2.*cpar[0])*TMath::Tan(acc_min);
899 cpar[4]=zvac6*TMath::Tan(acc_min);
900 gMC->Gsvolu("YCS4", "CONE", idtmed[1720], cpar, 5);
902 gMC->Gspos("YCS4", 1, "ALIC", 0., 0., dz, 0, "ONLY");
906 void AliSHILv0::Init()
909 // Initialise the muon shield after it has been built
914 for(i=0;i<35;i++) printf("*");
915 printf(" SHILv0_INIT ");
916 for(i=0;i<35;i++) printf("*");
919 // Here the SHIL initialisation code (if any!)
920 for(i=0;i<80;i++) printf("*");