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 1.25 2002/11/21 16:28:39 alibrary
19 Removing AliMCProcess and AliMC
21 Revision 1.24 2002/10/22 15:02:47 alibrary
22 Introducing Riostream.h
24 Revision 1.23 2002/10/14 14:57:39 hristov
25 Merging the VirtualMC branch to the main development branch (HEAD)
27 Revision 1.19.4.2 2002/10/11 08:04:28 hristov
28 Updating VirtualMC to v3-09-02
30 Revision 1.22 2002/09/02 15:29:20 morsch
31 Gsbool calls to resolve MANY added (I. Hrivnacova).
33 Revision 1.19.4.1 2002/06/10 15:13:48 hristov
36 Revision 1.21 2002/05/11 19:14:44 morsch
37 PCONE QBEU had last z defined twice.
39 Revision 1.20 2002/05/02 12:36:43 morsch
40 New version of beam-pipe geometry. Ref. AL502206PL
41 (used in production readiness report).
43 Revision 1.19 2002/03/25 12:34:40 morsch
44 Obsolete support rollers removed.
46 Revision 1.18 2002/02/01 18:02:41 morsch
47 Material of beam pipe between inner Be piece and forward detectors
48 can be set by SetPipeMaterial(mat), mat = kInox, kAlu, kBe ...
50 Revision 1.17 2001/09/24 13:11:50 morsch
51 Ion pump and bellows moved out by 15 cm to make space for forward
54 Revision 1.16 2001/05/16 14:57:22 alibrary
55 New files for folders and Stack
57 Revision 1.15 2001/05/02 11:50:18 morsch
58 New layout of the non-absorber side provided by Y. Viyogi. Not the final design
59 but the prsent most realistic.
61 Revision 1.14 2001/01/20 16:56:33 morsch
62 Put air in connecting tubes and flanges of vacuum pump.
64 Revision 1.13 2001/01/20 16:35:27 morsch
65 Increase mother volume for bellows.
67 Revision 1.12 2000/12/21 16:41:06 morsch
68 Coding convention clean-up (RS3)
70 Revision 1.11 2000/11/28 16:06:57 morsch
71 Undulated beam-pipe replaced by Al-Be (40,60) pipe 1.5 mm thick.
73 Revision 1.10 2000/11/24 13:00:37 morsch
74 - Geometry and materials imported from euclid output
76 - better struturing of volume tree
77 - improved version of flange close to front absorber
78 - more realistic pump materials
79 - undulated beam pipe imported from v3.
81 Revision 1.9 2000/10/02 21:28:15 fca
82 Removal of useless dependecies via forward declarations
84 Revision 1.8 2000/06/11 12:37:01 morsch
85 Coding rule violations corrected
87 Revision 1.7 2000/02/23 16:25:24 fca
88 AliVMC and AliGeant3 classes introduced
89 ReadEuclid moved from AliRun to AliModule
91 Revision 1.6 1999/09/29 09:24:30 fca
92 Introduction of the Copyright and cvs Log
96 ////////////////////////////////////////////////
98 ////////////////////////////////////////////////
100 #include "AliPIPEv0.h"
102 #include "AliConst.h"
106 #include <Riostream.h>
110 //_____________________________________________________________________________
111 AliPIPEv0::AliPIPEv0()
117 //_____________________________________________________________________________
118 AliPIPEv0::AliPIPEv0(const char *name, const char *title)
119 : AliPIPE(name,title)
126 //___________________________________________
127 void AliPIPEv0::CreateGeometry()
131 <img src="picts/pipe.gif">
138 <img src="picts/tree_pipe.gif">
142 if(fDebug) printf("%s: Create PIPEv0 geometry \n",ClassName());
145 Int_t *idtmed = fIdtmed->GetArray();
146 Float_t ppcon[90], ptube[3], pbox[3];
151 AliMatrix(idrotm[2001],90.,240., 0., 0., 90.,150.);
152 AliMatrix(idrotm[2002],90., 0., 0., 0., 90.,270.);
153 AliMatrix(idrotm[2003],90.,120., 0., 0., 90., 30.);
154 AliMatrix(idrotm[2004],90.,315., 90., 45., 0., 0.);
155 AliMatrix(idrotm[2005],90.,270., 90., 0., 0., 0.);
156 AliMatrix(idrotm[2006],90.,225., 90.,315., 0., 0.);
157 AliMatrix(idrotm[2007],90.,180., 90.,270., 0., 0.);
158 AliMatrix(idrotm[2008],90.,135., 90.,225., 0., 0.);
159 AliMatrix(idrotm[2009],90., 90., 90.,180., 0., 0.);
160 AliMatrix(idrotm[2010],90., 45., 90.,135., 0., 0.);
162 AliMatrix(idrotm[2012],90.,180., 90., 90.,180., 0.);
163 AliMatrix(idrotm[2013],90., 0., 90., 90.,180., 0.);
167 // distance between bellows
168 const Float_t dzbb = 9.0;
169 // total size of bellow section
170 const Float_t dzb = 15.0;
171 // size of undulated region
172 const Float_t dzub = 2.0;
174 // half-lengths of various beam pipe sections
176 Float_t hlenQbbe1 = 40.;
177 Float_t hlenQbbe2 = 36.5;
178 Float_t hlenQbbe = (hlenQbbe1+hlenQbbe2)/2.;
181 // Float_t hlenQbt1 = 5.5/2.;
183 // Pipe outside central region (non-absober side)
184 Float_t hlenQbab = 157.5;
186 // Flange non-absorber side
187 Float_t hlenQb29 = 11.5/2.+1.75 + 5.0;
190 Float_t hlenQbe0 = dzb;
192 // Inox pipe between Be and Bellow (absorber side)
193 Float_t hlenQb24[3] = {10.5/2., 1.8, 3.3};
196 Float_t hlenQb28 = (800.-hlenQbbe1-2.*hlenQbab-4.*hlenQb29-2.*hlenQbe0)/2.;
198 // Position of the pump
199 Float_t zPump = hlenQbbe1+2.*hlenQbab+2.*hlenQb29+dzb;
201 // Inner beam pipe radius
203 Float_t RinSt = 2.92;
206 Float_t RoutBe = 2.98;
207 Float_t RoutSt = 3.00;
214 // The peam pipe up to the Front Absorber
216 // Mother Volume QBPM
233 ppcon[12] = -90+2.*hlenQb24[2]+2.8+2.*hlenQb24[1];
237 ppcon[15] = ppcon[12];
241 ppcon[18] = ppcon[15] + 2. + 2.*dzub+0.2;
245 ppcon[21] = ppcon[18];
249 ppcon[24] = ppcon[21] + 2.* dzbb-0.4;
253 ppcon[27] = ppcon[24];
273 ppcon[42] = hlenQbbe1+2.*hlenQbab-0.1;
277 ppcon[45] = ppcon[42];
281 ppcon[48] = ppcon[45]+2.*hlenQb29-5.;
285 ppcon[51] = ppcon[48];
289 ppcon[54] = ppcon[51]+2.*dzb+10.;
293 ppcon[57] = ppcon[54];
301 gMC->Gsvolu("QBPM", "PCON", idtmed[kAir], ppcon,63);
305 // volume definitions of various sections
310 gMC->Gsvolu("QBVA","TUBE", idtmed[kVac], ptube, 0);
313 ptube[2] = (90.-hlenQbbe2)/2.;
314 dz = -90. + ptube[2];
315 gMC->Gsposp ("QBVA", 1, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
319 ptube[2] = hlenQbbe+hlenQbab;
321 gMC->Gsposp ("QBVA", 2, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
325 ptube[2] = (800.-hlenQbbe1-2.*hlenQbab)/2.;
327 gMC->Gsposp ("QBVA", 3, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
330 // Be Pipe in central Alice
335 gMC->Gsvolu("QBBE","TUBE", idtmed[kBe], ptube, 3);
370 gMC->Gsvolu("QBSR", "PCON", idtmed[kC], ppcon,21);
371 gMC->Gspos("QBSR", 1, "QBPM", 0.0, 0.0, 40., 0, "ONLY");
372 gMC->Gspos("QBSR", 2, "QBPM", 0.0, 0.0, 150., 0, "ONLY");
373 gMC->Gspos("QBSR", 3, "QBPM", 0.0, 0.0, 260., 0, "ONLY");
374 gMC->Gspos("QBSR", 4, "QBPM", 0.0, 0.0,- 46., 0, "ONLY");
376 // Flange and Fixed Point: non absorber side
385 ppcon[3] = -hlenQb29;
389 ppcon[6] = ppcon[3]+3.6;
397 ppcon[12] = hlenQb29;
401 gMC->Gsvolu("QB29", "PCON", idtmed[kAir], ppcon,15);
408 gMC->Gsvolu("QF29","TUBE", idtmed[kInox], ptube, 3);
409 gMC->Gspos("QF29", 1, "QB29", 0.0, 0.0, -hlenQb29+1.75, 0, "ONLY");
414 gMC->Gsvolu("QS29","TUBE", idtmed[kInox], ptube, 3);
415 gMC->Gspos("QS29", 1, "QB29", 0.0, 0.0, 0., 0, "ONLY");
420 gMC->Gsvolu("QP29","TUBE", idtmed[kInox], ptube, 3);
421 gMC->Gspos("QP29", 1, "QB29", 0.0, 0.0, -hlenQb29+9.75+3., 0, "ONLY");
425 // Inox beam pipe: final section on non-absorber side
431 gMC->Gsvolu("QB28","TUBE", idtmed[kInox], ptube, 3);
434 // Al-Be (40-60 wgt%, rho=2.7 g/cm**3) beam pipe
436 // This section is under study (A.M. 1/2/2002)
440 if (fPipeMaterial == kAlu) {
442 } else if (fPipeMaterial == kBe) {
444 } else if (fPipeMaterial == kInox){
449 gMC->Gsvolu("QBAB","TUBE", idtmed[fPipeMaterial], ptube, 3);
451 // 2.5 mm thick SS tube for hanging pump
457 gMC->Gsvolu("QB26","TUBE", idtmed[kInox], ptube, 3);
464 Float_t pconQBE0[33];
471 pconQBE0[ 5]= RoutSt;
473 pconQBE0[ 6]= -dzb+2.;
475 pconQBE0[ 8]= RoutSt;
477 pconQBE0[ 9]= -dzb+2.;
481 pconQBE0[12]= -dzb+2.+2.*dzub;
485 pconQBE0[15]= -dzb+2.+2.*dzub;
487 pconQBE0[17]= RoutSt;
489 pconQBE0[18]= -dzb+2.+2.*dzub+2.*dzbb;
491 pconQBE0[20]= RoutSt;
493 pconQBE0[21]= -dzb+2.+2.*dzub+2.*dzbb;
497 pconQBE0[24]= -dzb+2.+4.*dzub+2.*dzbb;
501 pconQBE0[27]= -dzb+2.+4.*dzub+2.*dzbb;
503 pconQBE0[29]= RoutSt;
507 pconQBE0[32]= RoutSt;
508 gMC->Gsvolu("QBE0", "PCON", idtmed[kAir], pconQBE0, 33);
510 // Undulated piece mother
514 gMC->Gsvolu("QBEM","TUBE", idtmed[kAir], ptube, 3);
516 gMC->Gspos("QBEM", 2 ,"QBE0", 0.0, 0.0, dz, 0 , "ONLY");
517 gMC->Gspos("QBEM", 1 ,"QBE0", 0.0, 0.0, -dz, idrotm[2012], "ONLY");
521 Float_t ur = 2.*dzub-12.*uw;
541 pund[12] = pund[9]+uw;
549 pund[18] = pund[12]+uz;
557 pund[24] = pund[21]+uw;
561 gMC->Gsvolu("QBEU", "PCON", idtmed[kInox], pund, 27);
563 for (i = 0; i < 6; i++)
565 dz = -dzub+(1+2*i)*ut;
566 gMC->Gspos("QBEU", i+1 ,"QBEM", 0.0, 0.0, dz, 0 , "ONLY");
571 gMC->Gsvolu("QBEW","TUBE", idtmed[kInox], ptube, 3);
572 gMC->Gspos("QBEW", 1 ,"QBEM", 0.0, 0.0, dzub-uz, 0 , "ONLY");
575 gMC->Gsvolu("QBEP","TUBE", idtmed[kInox], ptube, 0);
579 gMC->Gsposp("QBEP", 1 ,"QBE0", 0.0, 0.0, -dzb+1., 0 , "ONLY", ptube, 3);
580 gMC->Gsposp("QBEP", 2 ,"QBE0", 0.0, 0.0, dzb-1., 0 , "ONLY", ptube, 3);
582 gMC->Gsposp("QBEP", 3 ,"QBE0", 0.0, 0.0, 0., 0 , "ONLY", ptube, 3);
584 // End undulated part
589 // **** Placement of various sections on non-absorber side ****
592 // first the beryllium section
593 Float_t zpos = -(hlenQbbe2-hlenQbbe1)/2;
594 gMC->Gspos("QBBE", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
596 // next meta-metal transition QBT1 on on-absorber side
597 // zpos = zpos + hlenQbbe + hlenQbt1;
598 // gMC->Gspos("QBT1", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
600 // Aluminium OR Al-be alloy section
601 zpos = hlenQbbe1+hlenQbab;
602 gMC->Gspos("QBAB", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
604 // inox flange at the start of bellow
605 zpos = zpos + hlenQbab + hlenQb29;
606 gMC->Gspos("QB29", 1, "QBPM", 0.0, 0.0, zpos, idrotm[2012], "ONLY");
609 zpos = zpos + hlenQb29 + hlenQbe0;
610 gMC->Gspos("QBE0", 2 ,"QBPM", 0.0, 0.0, zpos, 0, "ONLY");
612 // inox flange at the end of bellow and start of thick inox for pump
613 zpos = zpos + hlenQbe0 + hlenQb29;
614 gMC->Gspos("QB29", 2, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
616 //last inox section till 800 cm
617 zpos = zpos + hlenQb29 + hlenQb28;
618 gMC->Gspos("QB28", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
620 //******** end of placement on no-absorber side *********
623 // **** Absorber side *****
627 // metal-metal transition : Be-Alu on absorber side
632 gMC->Gsvolu("QBT2","TUBE", idtmed[kAir], ptube, 3);
634 gMC->Gspos("QBT2", 1, "QBPM", 0., 0., -hlenQbbe-ptube[2], idrotm[2012], "ONLY");
641 gMC->Gsvolu("QB02","TUBE", idtmed[kAlu], ptube, 3);
644 gMC->Gsvolu("QBA2","TUBE", idtmed[kBe], ptube, 3);
646 gMC->Gspos("QBA2", 1, "QB02", 0., 0., 0, 0, "ONLY");
647 // z = -2.75 -> -2.00
648 gMC->Gspos("QB02", 1, "QBT2", 0., 0.,-2.75+ptube[2], 0, "ONLY");
655 gMC->Gsvolu("QB04","TUBE", idtmed[kAlu], ptube, 3);
656 gMC->Gspos("QB04", 1, "QBT2", 0., 0.,-2.+ptube[2], 0, "ONLY");
663 gMC->Gsvolu("QB06","TUBE", idtmed[kAlu], ptube, 3);
664 gMC->Gspos("QB06", 1, "QBT2", 0., 0., 2.55+ptube[2], 0, "ONLY");
672 gMC->Gsvolu("QBA8","TUBE", idtmed[kInox], ptube, 3);
673 gMC->Gspos("QBA8", 1 ,"QBT2", 0.000, 3.650, -1.25, idrotm[2002], "ONLY");
674 gMC->Gspos("QBA8", 2 ,"QBT2", 3.161, -1.825, -1.25, idrotm[2001], "ONLY");
675 gMC->Gspos("QBA8", 3 ,"QBT2", -3.161, -1.825, -1.25, idrotm[2003], "ONLY");
682 gMC->Gsvolu("QB77","TUBE", idtmed[kC], ptube, 3);
687 gMC->Gsvolu("QBB7","TUBE", idtmed[kInox], ptube, 3);
688 gMC->Gspos("QBB7", 1, "QB77", 0.0, 0.0, 0.55-0.2, 0, "ONLY");
689 gMC->Gspos("QB77", 1, "QBT2", 0.0, 0.0, 2., 0, "ONLY");
692 // Beam pipes between elements
695 gMC->Gsvolu("QB24","TUBE", idtmed[kInox], ptube, 0);
698 ptube[2] = hlenQb24[0];
699 dz = hlenQbbe2 + ptube[2];
700 gMC->Gsposp("QB24", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
702 // Bellow on absorber side
703 dz = dz+hlenQb24[0] + dzb;
704 gMC->Gspos("QBE0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
706 ptube[2] = hlenQb24[1];
707 dz = dz + dzb + ptube[2];
708 gMC->Gsposp("QB24", 2 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
719 gMC->Gsvolu("QFA0","TUBE", idtmed[kInox], ptube, 3);
721 gMC->Gspos("QFA0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
727 ptube[2] = hlenQb24[2];
729 gMC->Gsposp("QB24", 3 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
732 // --- Place the PIPE ghost volume (QBPM) in its mother volume (ALIC)
733 // by rotating it to 180 deg. and make it invisible
735 gMC->Gspos("QBPM",1,"ALIC",0,0,0,idrotm[2013], "ONLY");
736 gMC->Gsbool("QBPM", "L3DX");
737 gMC->Gsbool("QBPM", "L3O3");
738 gMC->Gsbool("QBPM", "L3O4");
742 // ******** Ion Pump volume description starts here ******
749 gMC->Gsvolu("QI32","BOX", idtmed[kInox], pbox, 3);
754 gMC->Gsvolu("QI42","BOX", idtmed[kGetter], pbox, 3);
755 gMC->Gspos("QI42", 1, "QI32", 0.0, 0.0, 0.0, 0, "ONLY");
761 gMC->Gsvolu("QI33","TUBE", idtmed[kInox], ptube, 3);
767 gMC->Gsvolu("QI43","TUBE", idtmed[kAir], ptube, 3);
768 gMC->Gspos("QI43", 1, "QI33", 0.0, 0.0, 0.0, 0, "ONLY");
770 // Connecting tube ->
774 gMC->Gsvolu("QI34","TUBE", idtmed[kInox], ptube, 3);
779 gMC->Gsvolu("QI44","TUBE", idtmed[kAir], ptube, 3);
780 gMC->Gspos("QI44", 1, "QI34", 0.0, 0.0, 0.0, 0, "ONLY");
788 gMC->Gsvolu("QI35","TUBE", idtmed[kInox], ptube, 3);
790 gMC->Gspos("QI32", 1, "QBPM", 0.0, -44.25, zPump, 0, "ONLY");
791 gMC->Gspos("QI33", 1, "QBPM", 0.0, -35.00, zPump,idrotm[2002], "ONLY");
792 gMC->Gspos("QI34", 1, "QBPM", 0.0, -17.90, zPump,idrotm[2002], "ONLY");
793 gMC->Gspos("QI35", 1, "QBPM", 0.0, -24.35, zPump,idrotm[2002], "ONLY");
795 gMC->Gsatt("QBPM", "SEEN", 1);
796 gMC->Gsatt("QBEM", "SEEN", 1);
801 //___________________________________________
802 void AliPIPEv0::CreateMaterials()
805 // Define materials for beam pipe
808 if(fDebug) printf("%s: Create PIPEv0 materials \n",ClassName());
809 Int_t isxfld = gAlice->Field()->Integ();
810 Float_t sxmgmx = gAlice->Field()->Max();
812 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
813 Float_t zsteel[4] = { 26.,24.,28.,14. };
814 Float_t wsteel[4] = { .715,.18,.1,.005 };
816 Float_t aAlBe[2] = { 26.98, 9.01};
817 Float_t zAlBe[2] = { 13.00, 4.00};
818 Float_t wAlBe[2] = { 0.4, 0.6};
822 AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
825 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
828 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
831 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
834 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
837 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
839 // reduced density steel to approximate pump getter material
840 AliMixture(20, "GETTER$", asteel, zsteel, 1.00, 4, wsteel);
843 AliMixture(21, "AlBe$", aAlBe, zAlBe, 2.07, 2, wAlBe);
846 // Defines tracking media parameters.
848 Float_t epsil = .001; // Tracking precision,
849 Float_t stemax = -0.01; // Maximum displacement for multiple scat
850 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
851 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
857 AliMedium(5, "BE", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
860 AliMedium(6, "C", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
863 AliMedium(9, "ALU", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
866 AliMedium(15, "AIR", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
869 AliMedium(16, "VACUUM", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
872 AliMedium(19, "INOX", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
875 AliMedium(20, "GETTER", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
878 AliMedium(21, "AlBe" , 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);