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 1.23 2002/10/14 14:57:39 hristov
19 Merging the VirtualMC branch to the main development branch (HEAD)
21 Revision 1.19.4.2 2002/10/11 08:04:28 hristov
22 Updating VirtualMC to v3-09-02
24 Revision 1.22 2002/09/02 15:29:20 morsch
25 Gsbool calls to resolve MANY added (I. Hrivnacova).
27 Revision 1.19.4.1 2002/06/10 15:13:48 hristov
30 Revision 1.21 2002/05/11 19:14:44 morsch
31 PCONE QBEU had last z defined twice.
33 Revision 1.20 2002/05/02 12:36:43 morsch
34 New version of beam-pipe geometry. Ref. AL502206PL
35 (used in production readiness report).
37 Revision 1.19 2002/03/25 12:34:40 morsch
38 Obsolete support rollers removed.
40 Revision 1.18 2002/02/01 18:02:41 morsch
41 Material of beam pipe between inner Be piece and forward detectors
42 can be set by SetPipeMaterial(mat), mat = kInox, kAlu, kBe ...
44 Revision 1.17 2001/09/24 13:11:50 morsch
45 Ion pump and bellows moved out by 15 cm to make space for forward
48 Revision 1.16 2001/05/16 14:57:22 alibrary
49 New files for folders and Stack
51 Revision 1.15 2001/05/02 11:50:18 morsch
52 New layout of the non-absorber side provided by Y. Viyogi. Not the final design
53 but the prsent most realistic.
55 Revision 1.14 2001/01/20 16:56:33 morsch
56 Put air in connecting tubes and flanges of vacuum pump.
58 Revision 1.13 2001/01/20 16:35:27 morsch
59 Increase mother volume for bellows.
61 Revision 1.12 2000/12/21 16:41:06 morsch
62 Coding convention clean-up (RS3)
64 Revision 1.11 2000/11/28 16:06:57 morsch
65 Undulated beam-pipe replaced by Al-Be (40,60) pipe 1.5 mm thick.
67 Revision 1.10 2000/11/24 13:00:37 morsch
68 - Geometry and materials imported from euclid output
70 - better struturing of volume tree
71 - improved version of flange close to front absorber
72 - more realistic pump materials
73 - undulated beam pipe imported from v3.
75 Revision 1.9 2000/10/02 21:28:15 fca
76 Removal of useless dependecies via forward declarations
78 Revision 1.8 2000/06/11 12:37:01 morsch
79 Coding rule violations corrected
81 Revision 1.7 2000/02/23 16:25:24 fca
82 AliVMC and AliGeant3 classes introduced
83 ReadEuclid moved from AliRun to AliModule
85 Revision 1.6 1999/09/29 09:24:30 fca
86 Introduction of the Copyright and cvs Log
90 ////////////////////////////////////////////////
92 ////////////////////////////////////////////////
94 #include "AliPIPEv0.h"
101 #include <Riostream.h>
105 //_____________________________________________________________________________
106 AliPIPEv0::AliPIPEv0()
112 //_____________________________________________________________________________
113 AliPIPEv0::AliPIPEv0(const char *name, const char *title)
114 : AliPIPE(name,title)
121 //___________________________________________
122 void AliPIPEv0::CreateGeometry()
126 <img src="picts/pipe.gif">
133 <img src="picts/tree_pipe.gif">
137 if(fDebug) printf("%s: Create PIPEv0 geometry \n",ClassName());
140 Int_t *idtmed = fIdtmed->GetArray();
141 Float_t ppcon[84], ptube[3], pbox[3];
146 AliMatrix(idrotm[2001],90.,240., 0., 0., 90.,150.);
147 AliMatrix(idrotm[2002],90., 0., 0., 0., 90.,270.);
148 AliMatrix(idrotm[2003],90.,120., 0., 0., 90., 30.);
149 AliMatrix(idrotm[2004],90.,315., 90., 45., 0., 0.);
150 AliMatrix(idrotm[2005],90.,270., 90., 0., 0., 0.);
151 AliMatrix(idrotm[2006],90.,225., 90.,315., 0., 0.);
152 AliMatrix(idrotm[2007],90.,180., 90.,270., 0., 0.);
153 AliMatrix(idrotm[2008],90.,135., 90.,225., 0., 0.);
154 AliMatrix(idrotm[2009],90., 90., 90.,180., 0., 0.);
155 AliMatrix(idrotm[2010],90., 45., 90.,135., 0., 0.);
157 AliMatrix(idrotm[2012],90.,180., 90., 90.,180., 0.);
158 AliMatrix(idrotm[2013],90., 0., 90., 90.,180., 0.);
162 // distance between bellows
163 const Float_t dzbb = 9.0;
164 // total size of bellow section
165 const Float_t dzb = 15.0;
166 // size of undulated region
167 const Float_t dzub = 2.0;
169 // half-lengths of various beam pipe sections
171 Float_t hlenQbbe1 = 40.;
172 Float_t hlenQbbe2 = 36.5;
173 Float_t hlenQbbe = (hlenQbbe1+hlenQbbe2)/2.;
176 // Float_t hlenQbt1 = 5.5/2.;
178 // Pipe outside central region (non-absober side)
179 Float_t hlenQbab = 157.5;
181 // Flange non-absorber side
182 Float_t hlenQb29 = 11.5/2.+1.75 + 5.0;
185 Float_t hlenQbe0 = dzb;
187 // Inox pipe between Be and Bellow (absorber side)
188 Float_t hlenQb24[3] = {10.5/2., 1.8, 3.3};
191 Float_t hlenQb28 = (800.-hlenQbbe1-2.*hlenQbab-4.*hlenQb29-2.*hlenQbe0)/2.;
193 // Position of the pump
194 Float_t zPump = hlenQbbe1+2.*hlenQbab+2.*hlenQb29+dzb;
196 // Inner beam pipe radius
198 Float_t RinSt = 2.92;
201 Float_t RoutBe = 2.98;
202 Float_t RoutSt = 3.00;
209 // The peam pipe up to the Front Absorber
211 // Mother Volume QBPM
220 ppcon[6] = -90+2.*hlenQb24[2]+2.8+2.*hlenQb24[1];
228 ppcon[12] = ppcon[9] + 2. + 2.*dzub+0.2;
232 ppcon[15] = ppcon[12];
236 ppcon[18] = ppcon[15] + 2.* dzbb-0.4;
240 ppcon[21] = ppcon[18];
260 ppcon[36] = hlenQbbe1+2.*hlenQbab-0.1;
264 ppcon[39] = ppcon[36];
268 ppcon[42] = ppcon[39]+2.*hlenQb29-5.;
272 ppcon[45] = ppcon[42];
276 ppcon[48] = ppcon[45]+2.*dzb+10.;
280 ppcon[51] = ppcon[48];
288 gMC->Gsvolu("QBPM", "PCON", idtmed[kAir], ppcon,57);
292 // volume definitions of various sections
297 gMC->Gsvolu("QBVA","TUBE", idtmed[kVac], ptube, 0);
300 ptube[2] = (90.-hlenQbbe2)/2.;
301 dz = -90. + ptube[2];
302 gMC->Gsposp ("QBVA", 1, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
306 ptube[2] = hlenQbbe+hlenQbab;
308 gMC->Gsposp ("QBVA", 2, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
312 ptube[2] = (800.-hlenQbbe1-2.*hlenQbab)/2.;
314 gMC->Gsposp ("QBVA", 3, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
317 // Be Pipe in central Alice
322 gMC->Gsvolu("QBBE","TUBE", idtmed[kBe], ptube, 3);
357 gMC->Gsvolu("QBSR", "PCON", idtmed[kC], ppcon,21);
358 gMC->Gspos("QBSR", 1, "QBPM", 0.0, 0.0, 40., 0, "ONLY");
359 gMC->Gspos("QBSR", 2, "QBPM", 0.0, 0.0, 150., 0, "ONLY");
360 gMC->Gspos("QBSR", 3, "QBPM", 0.0, 0.0, 260., 0, "ONLY");
361 gMC->Gspos("QBSR", 4, "QBPM", 0.0, 0.0,- 46., 0, "ONLY");
363 // Flange and Fixed Point: non absorber side
372 ppcon[3] = -hlenQb29;
376 ppcon[6] = ppcon[3]+3.6;
384 ppcon[12] = hlenQb29;
388 gMC->Gsvolu("QB29", "PCON", idtmed[kAir], ppcon,15);
395 gMC->Gsvolu("QF29","TUBE", idtmed[kInox], ptube, 3);
396 gMC->Gspos("QF29", 1, "QB29", 0.0, 0.0, -hlenQb29+1.75, 0, "ONLY");
401 gMC->Gsvolu("QS29","TUBE", idtmed[kInox], ptube, 3);
402 gMC->Gspos("QS29", 1, "QB29", 0.0, 0.0, 0., 0, "ONLY");
407 gMC->Gsvolu("QP29","TUBE", idtmed[kInox], ptube, 3);
408 gMC->Gspos("QP29", 1, "QB29", 0.0, 0.0, -hlenQb29+9.75+3., 0, "ONLY");
412 // Inox beam pipe: final section on non-absorber side
418 gMC->Gsvolu("QB28","TUBE", idtmed[kInox], ptube, 3);
421 // Al-Be (40-60 wgt%, rho=2.7 g/cm**3) beam pipe
423 // This section is under study (A.M. 1/2/2002)
427 if (fPipeMaterial == kAlu) {
429 } else if (fPipeMaterial == kBe) {
431 } else if (fPipeMaterial == kInox){
436 gMC->Gsvolu("QBAB","TUBE", idtmed[fPipeMaterial], ptube, 3);
438 // 2.5 mm thick SS tube for hanging pump
444 gMC->Gsvolu("QB26","TUBE", idtmed[kInox], ptube, 3);
451 Float_t pconQBE0[33];
458 pconQBE0[ 5]= RoutSt;
460 pconQBE0[ 6]= -dzb+2.;
462 pconQBE0[ 8]= RoutSt;
464 pconQBE0[ 9]= -dzb+2.;
468 pconQBE0[12]= -dzb+2.+2.*dzub;
472 pconQBE0[15]= -dzb+2.+2.*dzub;
474 pconQBE0[17]= RoutSt;
476 pconQBE0[18]= -dzb+2.+2.*dzub+2.*dzbb;
478 pconQBE0[20]= RoutSt;
480 pconQBE0[21]= -dzb+2.+2.*dzub+2.*dzbb;
484 pconQBE0[24]= -dzb+2.+4.*dzub+2.*dzbb;
488 pconQBE0[27]= -dzb+2.+4.*dzub+2.*dzbb;
490 pconQBE0[29]= RoutSt;
494 pconQBE0[32]= RoutSt;
495 gMC->Gsvolu("QBE0", "PCON", idtmed[kAir], pconQBE0, 33);
497 // Undulated piece mother
501 gMC->Gsvolu("QBEM","TUBE", idtmed[kAir], ptube, 3);
503 gMC->Gspos("QBEM", 2 ,"QBE0", 0.0, 0.0, dz, 0 , "ONLY");
504 gMC->Gspos("QBEM", 1 ,"QBE0", 0.0, 0.0, -dz, idrotm[2012], "ONLY");
508 Float_t ur = 2.*dzub-12.*uw;
528 pund[12] = pund[9]+uw;
536 pund[18] = pund[12]+uz;
544 pund[24] = pund[21]+uw;
548 gMC->Gsvolu("QBEU", "PCON", idtmed[kInox], pund, 27);
550 for (i = 0; i < 6; i++)
552 dz = -dzub+(1+2*i)*ut;
553 gMC->Gspos("QBEU", i+1 ,"QBEM", 0.0, 0.0, dz, 0 , "ONLY");
558 gMC->Gsvolu("QBEW","TUBE", idtmed[kInox], ptube, 3);
559 gMC->Gspos("QBEW", 1 ,"QBEM", 0.0, 0.0, dzub-uz, 0 , "ONLY");
562 gMC->Gsvolu("QBEP","TUBE", idtmed[kInox], ptube, 0);
566 gMC->Gsposp("QBEP", 1 ,"QBE0", 0.0, 0.0, -dzb+1., 0 , "ONLY", ptube, 3);
567 gMC->Gsposp("QBEP", 2 ,"QBE0", 0.0, 0.0, dzb-1., 0 , "ONLY", ptube, 3);
569 gMC->Gsposp("QBEP", 3 ,"QBE0", 0.0, 0.0, 0., 0 , "ONLY", ptube, 3);
571 // End undulated part
576 // **** Placement of various sections on non-absorber side ****
579 // first the beryllium section
580 Float_t zpos = -(hlenQbbe2-hlenQbbe1)/2;
581 gMC->Gspos("QBBE", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
583 // next meta-metal transition QBT1 on on-absorber side
584 // zpos = zpos + hlenQbbe + hlenQbt1;
585 // gMC->Gspos("QBT1", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
587 // Aluminium OR Al-be alloy section
588 zpos = hlenQbbe1+hlenQbab;
589 gMC->Gspos("QBAB", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
591 // inox flange at the start of bellow
592 zpos = zpos + hlenQbab + hlenQb29;
593 gMC->Gspos("QB29", 1, "QBPM", 0.0, 0.0, zpos, idrotm[2012], "ONLY");
596 zpos = zpos + hlenQb29 + hlenQbe0;
597 gMC->Gspos("QBE0", 2 ,"QBPM", 0.0, 0.0, zpos, 0, "ONLY");
599 // inox flange at the end of bellow and start of thick inox for pump
600 zpos = zpos + hlenQbe0 + hlenQb29;
601 gMC->Gspos("QB29", 2, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
603 //last inox section till 800 cm
604 zpos = zpos + hlenQb29 + hlenQb28;
605 gMC->Gspos("QB28", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
607 //******** end of placement on no-absorber side *********
610 // **** Absorber side *****
614 // metal-metal transition : Be-Alu on absorber side
619 gMC->Gsvolu("QBT2","TUBE", idtmed[kAir], ptube, 3);
621 gMC->Gspos("QBT2", 1, "QBPM", 0., 0., -hlenQbbe-ptube[2], idrotm[2012], "ONLY");
628 gMC->Gsvolu("QB02","TUBE", idtmed[kAlu], ptube, 3);
631 gMC->Gsvolu("QBA2","TUBE", idtmed[kBe], ptube, 3);
633 gMC->Gspos("QBA2", 1, "QB02", 0., 0., 0, 0, "ONLY");
634 // z = -2.75 -> -2.00
635 gMC->Gspos("QB02", 1, "QBT2", 0., 0.,-2.75+ptube[2], 0, "ONLY");
642 gMC->Gsvolu("QB04","TUBE", idtmed[kAlu], ptube, 3);
643 gMC->Gspos("QB04", 1, "QBT2", 0., 0.,-2.+ptube[2], 0, "ONLY");
650 gMC->Gsvolu("QB06","TUBE", idtmed[kAlu], ptube, 3);
651 gMC->Gspos("QB06", 1, "QBT2", 0., 0., 2.55+ptube[2], 0, "ONLY");
659 gMC->Gsvolu("QBA8","TUBE", idtmed[kInox], ptube, 3);
660 gMC->Gspos("QBA8", 1 ,"QBT2", 0.000, 3.650, -1.25, idrotm[2002], "ONLY");
661 gMC->Gspos("QBA8", 2 ,"QBT2", 3.161, -1.825, -1.25, idrotm[2001], "ONLY");
662 gMC->Gspos("QBA8", 3 ,"QBT2", -3.161, -1.825, -1.25, idrotm[2003], "ONLY");
669 gMC->Gsvolu("QB77","TUBE", idtmed[kC], ptube, 3);
674 gMC->Gsvolu("QBB7","TUBE", idtmed[kInox], ptube, 3);
675 gMC->Gspos("QBB7", 1, "QB77", 0.0, 0.0, 0.55-0.2, 0, "ONLY");
676 gMC->Gspos("QB77", 1, "QBT2", 0.0, 0.0, 2., 0, "ONLY");
679 // Beam pipes between elements
682 gMC->Gsvolu("QB24","TUBE", idtmed[kInox], ptube, 0);
685 ptube[2] = hlenQb24[0];
686 dz = hlenQbbe2 + ptube[2];
687 gMC->Gsposp("QB24", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
689 // Bellow on absorber side
690 dz = dz+hlenQb24[0] + dzb;
691 gMC->Gspos("QBE0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
693 ptube[2] = hlenQb24[1];
694 dz = dz + dzb + ptube[2];
695 gMC->Gsposp("QB24", 2 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
706 gMC->Gsvolu("QFA0","TUBE", idtmed[kInox], ptube, 3);
708 gMC->Gspos("QFA0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
714 ptube[2] = hlenQb24[2];
716 gMC->Gsposp("QB24", 3 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
719 // --- Place the PIPE ghost volume (QBPM) in its mother volume (ALIC)
720 // by rotating it to 180 deg. and make it invisible
722 gMC->Gspos("QBPM",1,"ALIC",0,0,0,idrotm[2013], "ONLY");
723 gMC->Gsbool("QBPM", "L3DX");
724 gMC->Gsbool("QBPM", "L3O3");
725 gMC->Gsbool("QBPM", "L3O4");
729 // ******** Ion Pump volume description starts here ******
736 gMC->Gsvolu("QI32","BOX", idtmed[kInox], pbox, 3);
741 gMC->Gsvolu("QI42","BOX", idtmed[kGetter], pbox, 3);
742 gMC->Gspos("QI42", 1, "QI32", 0.0, 0.0, 0.0, 0, "ONLY");
748 gMC->Gsvolu("QI33","TUBE", idtmed[kInox], ptube, 3);
754 gMC->Gsvolu("QI43","TUBE", idtmed[kAir], ptube, 3);
755 gMC->Gspos("QI43", 1, "QI33", 0.0, 0.0, 0.0, 0, "ONLY");
757 // Connecting tube ->
761 gMC->Gsvolu("QI34","TUBE", idtmed[kInox], ptube, 3);
766 gMC->Gsvolu("QI44","TUBE", idtmed[kAir], ptube, 3);
767 gMC->Gspos("QI44", 1, "QI34", 0.0, 0.0, 0.0, 0, "ONLY");
775 gMC->Gsvolu("QI35","TUBE", idtmed[kInox], ptube, 3);
777 gMC->Gspos("QI32", 1, "QBPM", 0.0, -44.25, zPump, 0, "ONLY");
778 gMC->Gspos("QI33", 1, "QBPM", 0.0, -35.00, zPump,idrotm[2002], "ONLY");
779 gMC->Gspos("QI34", 1, "QBPM", 0.0, -17.90, zPump,idrotm[2002], "ONLY");
780 gMC->Gspos("QI35", 1, "QBPM", 0.0, -24.35, zPump,idrotm[2002], "ONLY");
782 gMC->Gsatt("QBPM", "SEEN", 1);
783 gMC->Gsatt("QBEM", "SEEN", 1);
788 //___________________________________________
789 void AliPIPEv0::CreateMaterials()
792 // Define materials for beam pipe
795 if(fDebug) printf("%s: Create PIPEv0 materials \n",ClassName());
796 Int_t isxfld = gAlice->Field()->Integ();
797 Float_t sxmgmx = gAlice->Field()->Max();
799 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
800 Float_t zsteel[4] = { 26.,24.,28.,14. };
801 Float_t wsteel[4] = { .715,.18,.1,.005 };
803 Float_t aAlBe[2] = { 26.98, 9.01};
804 Float_t zAlBe[2] = { 13.00, 4.00};
805 Float_t wAlBe[2] = { 0.4, 0.6};
809 AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
812 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
815 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
818 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
821 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
824 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
826 // reduced density steel to approximate pump getter material
827 AliMixture(20, "GETTER$", asteel, zsteel, 1.00, 4, wsteel);
830 AliMixture(21, "AlBe$", aAlBe, zAlBe, 2.07, 2, wAlBe);
833 // Defines tracking media parameters.
835 Float_t epsil = .001; // Tracking precision,
836 Float_t stemax = -0.01; // Maximum displacement for multiple scat
837 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
838 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
844 AliMedium(5, "BE", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
847 AliMedium(6, "C", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
850 AliMedium(9, "ALU", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
853 AliMedium(15, "AIR", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
856 AliMedium(16, "VACUUM", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
859 AliMedium(19, "INOX", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
862 AliMedium(20, "GETTER", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
865 AliMedium(21, "AlBe" , 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);