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 1.24 2002/10/22 15:02:47 alibrary
19 Introducing Riostream.h
21 Revision 1.23 2002/10/14 14:57:39 hristov
22 Merging the VirtualMC branch to the main development branch (HEAD)
24 Revision 1.19.4.2 2002/10/11 08:04:28 hristov
25 Updating VirtualMC to v3-09-02
27 Revision 1.22 2002/09/02 15:29:20 morsch
28 Gsbool calls to resolve MANY added (I. Hrivnacova).
30 Revision 1.19.4.1 2002/06/10 15:13:48 hristov
33 Revision 1.21 2002/05/11 19:14:44 morsch
34 PCONE QBEU had last z defined twice.
36 Revision 1.20 2002/05/02 12:36:43 morsch
37 New version of beam-pipe geometry. Ref. AL502206PL
38 (used in production readiness report).
40 Revision 1.19 2002/03/25 12:34:40 morsch
41 Obsolete support rollers removed.
43 Revision 1.18 2002/02/01 18:02:41 morsch
44 Material of beam pipe between inner Be piece and forward detectors
45 can be set by SetPipeMaterial(mat), mat = kInox, kAlu, kBe ...
47 Revision 1.17 2001/09/24 13:11:50 morsch
48 Ion pump and bellows moved out by 15 cm to make space for forward
51 Revision 1.16 2001/05/16 14:57:22 alibrary
52 New files for folders and Stack
54 Revision 1.15 2001/05/02 11:50:18 morsch
55 New layout of the non-absorber side provided by Y. Viyogi. Not the final design
56 but the prsent most realistic.
58 Revision 1.14 2001/01/20 16:56:33 morsch
59 Put air in connecting tubes and flanges of vacuum pump.
61 Revision 1.13 2001/01/20 16:35:27 morsch
62 Increase mother volume for bellows.
64 Revision 1.12 2000/12/21 16:41:06 morsch
65 Coding convention clean-up (RS3)
67 Revision 1.11 2000/11/28 16:06:57 morsch
68 Undulated beam-pipe replaced by Al-Be (40,60) pipe 1.5 mm thick.
70 Revision 1.10 2000/11/24 13:00:37 morsch
71 - Geometry and materials imported from euclid output
73 - better struturing of volume tree
74 - improved version of flange close to front absorber
75 - more realistic pump materials
76 - undulated beam pipe imported from v3.
78 Revision 1.9 2000/10/02 21:28:15 fca
79 Removal of useless dependecies via forward declarations
81 Revision 1.8 2000/06/11 12:37:01 morsch
82 Coding rule violations corrected
84 Revision 1.7 2000/02/23 16:25:24 fca
85 AliVMC and AliGeant3 classes introduced
86 ReadEuclid moved from AliRun to AliModule
88 Revision 1.6 1999/09/29 09:24:30 fca
89 Introduction of the Copyright and cvs Log
93 ////////////////////////////////////////////////
95 ////////////////////////////////////////////////
97 #include "AliPIPEv0.h"
103 #include <Riostream.h>
107 //_____________________________________________________________________________
108 AliPIPEv0::AliPIPEv0()
114 //_____________________________________________________________________________
115 AliPIPEv0::AliPIPEv0(const char *name, const char *title)
116 : AliPIPE(name,title)
123 //___________________________________________
124 void AliPIPEv0::CreateGeometry()
128 <img src="picts/pipe.gif">
135 <img src="picts/tree_pipe.gif">
139 if(fDebug) printf("%s: Create PIPEv0 geometry \n",ClassName());
142 Int_t *idtmed = fIdtmed->GetArray();
143 Float_t ppcon[84], ptube[3], pbox[3];
148 AliMatrix(idrotm[2001],90.,240., 0., 0., 90.,150.);
149 AliMatrix(idrotm[2002],90., 0., 0., 0., 90.,270.);
150 AliMatrix(idrotm[2003],90.,120., 0., 0., 90., 30.);
151 AliMatrix(idrotm[2004],90.,315., 90., 45., 0., 0.);
152 AliMatrix(idrotm[2005],90.,270., 90., 0., 0., 0.);
153 AliMatrix(idrotm[2006],90.,225., 90.,315., 0., 0.);
154 AliMatrix(idrotm[2007],90.,180., 90.,270., 0., 0.);
155 AliMatrix(idrotm[2008],90.,135., 90.,225., 0., 0.);
156 AliMatrix(idrotm[2009],90., 90., 90.,180., 0., 0.);
157 AliMatrix(idrotm[2010],90., 45., 90.,135., 0., 0.);
159 AliMatrix(idrotm[2012],90.,180., 90., 90.,180., 0.);
160 AliMatrix(idrotm[2013],90., 0., 90., 90.,180., 0.);
164 // distance between bellows
165 const Float_t dzbb = 9.0;
166 // total size of bellow section
167 const Float_t dzb = 15.0;
168 // size of undulated region
169 const Float_t dzub = 2.0;
171 // half-lengths of various beam pipe sections
173 Float_t hlenQbbe1 = 40.;
174 Float_t hlenQbbe2 = 36.5;
175 Float_t hlenQbbe = (hlenQbbe1+hlenQbbe2)/2.;
178 // Float_t hlenQbt1 = 5.5/2.;
180 // Pipe outside central region (non-absober side)
181 Float_t hlenQbab = 157.5;
183 // Flange non-absorber side
184 Float_t hlenQb29 = 11.5/2.+1.75 + 5.0;
187 Float_t hlenQbe0 = dzb;
189 // Inox pipe between Be and Bellow (absorber side)
190 Float_t hlenQb24[3] = {10.5/2., 1.8, 3.3};
193 Float_t hlenQb28 = (800.-hlenQbbe1-2.*hlenQbab-4.*hlenQb29-2.*hlenQbe0)/2.;
195 // Position of the pump
196 Float_t zPump = hlenQbbe1+2.*hlenQbab+2.*hlenQb29+dzb;
198 // Inner beam pipe radius
200 Float_t RinSt = 2.92;
203 Float_t RoutBe = 2.98;
204 Float_t RoutSt = 3.00;
211 // The peam pipe up to the Front Absorber
213 // Mother Volume QBPM
222 ppcon[6] = -90+2.*hlenQb24[2]+2.8+2.*hlenQb24[1];
230 ppcon[12] = ppcon[9] + 2. + 2.*dzub+0.2;
234 ppcon[15] = ppcon[12];
238 ppcon[18] = ppcon[15] + 2.* dzbb-0.4;
242 ppcon[21] = ppcon[18];
262 ppcon[36] = hlenQbbe1+2.*hlenQbab-0.1;
266 ppcon[39] = ppcon[36];
270 ppcon[42] = ppcon[39]+2.*hlenQb29-5.;
274 ppcon[45] = ppcon[42];
278 ppcon[48] = ppcon[45]+2.*dzb+10.;
282 ppcon[51] = ppcon[48];
290 gMC->Gsvolu("QBPM", "PCON", idtmed[kAir], ppcon,57);
294 // volume definitions of various sections
299 gMC->Gsvolu("QBVA","TUBE", idtmed[kVac], ptube, 0);
302 ptube[2] = (90.-hlenQbbe2)/2.;
303 dz = -90. + ptube[2];
304 gMC->Gsposp ("QBVA", 1, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
308 ptube[2] = hlenQbbe+hlenQbab;
310 gMC->Gsposp ("QBVA", 2, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
314 ptube[2] = (800.-hlenQbbe1-2.*hlenQbab)/2.;
316 gMC->Gsposp ("QBVA", 3, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
319 // Be Pipe in central Alice
324 gMC->Gsvolu("QBBE","TUBE", idtmed[kBe], ptube, 3);
359 gMC->Gsvolu("QBSR", "PCON", idtmed[kC], ppcon,21);
360 gMC->Gspos("QBSR", 1, "QBPM", 0.0, 0.0, 40., 0, "ONLY");
361 gMC->Gspos("QBSR", 2, "QBPM", 0.0, 0.0, 150., 0, "ONLY");
362 gMC->Gspos("QBSR", 3, "QBPM", 0.0, 0.0, 260., 0, "ONLY");
363 gMC->Gspos("QBSR", 4, "QBPM", 0.0, 0.0,- 46., 0, "ONLY");
365 // Flange and Fixed Point: non absorber side
374 ppcon[3] = -hlenQb29;
378 ppcon[6] = ppcon[3]+3.6;
386 ppcon[12] = hlenQb29;
390 gMC->Gsvolu("QB29", "PCON", idtmed[kAir], ppcon,15);
397 gMC->Gsvolu("QF29","TUBE", idtmed[kInox], ptube, 3);
398 gMC->Gspos("QF29", 1, "QB29", 0.0, 0.0, -hlenQb29+1.75, 0, "ONLY");
403 gMC->Gsvolu("QS29","TUBE", idtmed[kInox], ptube, 3);
404 gMC->Gspos("QS29", 1, "QB29", 0.0, 0.0, 0., 0, "ONLY");
409 gMC->Gsvolu("QP29","TUBE", idtmed[kInox], ptube, 3);
410 gMC->Gspos("QP29", 1, "QB29", 0.0, 0.0, -hlenQb29+9.75+3., 0, "ONLY");
414 // Inox beam pipe: final section on non-absorber side
420 gMC->Gsvolu("QB28","TUBE", idtmed[kInox], ptube, 3);
423 // Al-Be (40-60 wgt%, rho=2.7 g/cm**3) beam pipe
425 // This section is under study (A.M. 1/2/2002)
429 if (fPipeMaterial == kAlu) {
431 } else if (fPipeMaterial == kBe) {
433 } else if (fPipeMaterial == kInox){
438 gMC->Gsvolu("QBAB","TUBE", idtmed[fPipeMaterial], ptube, 3);
440 // 2.5 mm thick SS tube for hanging pump
446 gMC->Gsvolu("QB26","TUBE", idtmed[kInox], ptube, 3);
453 Float_t pconQBE0[33];
460 pconQBE0[ 5]= RoutSt;
462 pconQBE0[ 6]= -dzb+2.;
464 pconQBE0[ 8]= RoutSt;
466 pconQBE0[ 9]= -dzb+2.;
470 pconQBE0[12]= -dzb+2.+2.*dzub;
474 pconQBE0[15]= -dzb+2.+2.*dzub;
476 pconQBE0[17]= RoutSt;
478 pconQBE0[18]= -dzb+2.+2.*dzub+2.*dzbb;
480 pconQBE0[20]= RoutSt;
482 pconQBE0[21]= -dzb+2.+2.*dzub+2.*dzbb;
486 pconQBE0[24]= -dzb+2.+4.*dzub+2.*dzbb;
490 pconQBE0[27]= -dzb+2.+4.*dzub+2.*dzbb;
492 pconQBE0[29]= RoutSt;
496 pconQBE0[32]= RoutSt;
497 gMC->Gsvolu("QBE0", "PCON", idtmed[kAir], pconQBE0, 33);
499 // Undulated piece mother
503 gMC->Gsvolu("QBEM","TUBE", idtmed[kAir], ptube, 3);
505 gMC->Gspos("QBEM", 2 ,"QBE0", 0.0, 0.0, dz, 0 , "ONLY");
506 gMC->Gspos("QBEM", 1 ,"QBE0", 0.0, 0.0, -dz, idrotm[2012], "ONLY");
510 Float_t ur = 2.*dzub-12.*uw;
530 pund[12] = pund[9]+uw;
538 pund[18] = pund[12]+uz;
546 pund[24] = pund[21]+uw;
550 gMC->Gsvolu("QBEU", "PCON", idtmed[kInox], pund, 27);
552 for (i = 0; i < 6; i++)
554 dz = -dzub+(1+2*i)*ut;
555 gMC->Gspos("QBEU", i+1 ,"QBEM", 0.0, 0.0, dz, 0 , "ONLY");
560 gMC->Gsvolu("QBEW","TUBE", idtmed[kInox], ptube, 3);
561 gMC->Gspos("QBEW", 1 ,"QBEM", 0.0, 0.0, dzub-uz, 0 , "ONLY");
564 gMC->Gsvolu("QBEP","TUBE", idtmed[kInox], ptube, 0);
568 gMC->Gsposp("QBEP", 1 ,"QBE0", 0.0, 0.0, -dzb+1., 0 , "ONLY", ptube, 3);
569 gMC->Gsposp("QBEP", 2 ,"QBE0", 0.0, 0.0, dzb-1., 0 , "ONLY", ptube, 3);
571 gMC->Gsposp("QBEP", 3 ,"QBE0", 0.0, 0.0, 0., 0 , "ONLY", ptube, 3);
573 // End undulated part
578 // **** Placement of various sections on non-absorber side ****
581 // first the beryllium section
582 Float_t zpos = -(hlenQbbe2-hlenQbbe1)/2;
583 gMC->Gspos("QBBE", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
585 // next meta-metal transition QBT1 on on-absorber side
586 // zpos = zpos + hlenQbbe + hlenQbt1;
587 // gMC->Gspos("QBT1", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
589 // Aluminium OR Al-be alloy section
590 zpos = hlenQbbe1+hlenQbab;
591 gMC->Gspos("QBAB", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
593 // inox flange at the start of bellow
594 zpos = zpos + hlenQbab + hlenQb29;
595 gMC->Gspos("QB29", 1, "QBPM", 0.0, 0.0, zpos, idrotm[2012], "ONLY");
598 zpos = zpos + hlenQb29 + hlenQbe0;
599 gMC->Gspos("QBE0", 2 ,"QBPM", 0.0, 0.0, zpos, 0, "ONLY");
601 // inox flange at the end of bellow and start of thick inox for pump
602 zpos = zpos + hlenQbe0 + hlenQb29;
603 gMC->Gspos("QB29", 2, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
605 //last inox section till 800 cm
606 zpos = zpos + hlenQb29 + hlenQb28;
607 gMC->Gspos("QB28", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
609 //******** end of placement on no-absorber side *********
612 // **** Absorber side *****
616 // metal-metal transition : Be-Alu on absorber side
621 gMC->Gsvolu("QBT2","TUBE", idtmed[kAir], ptube, 3);
623 gMC->Gspos("QBT2", 1, "QBPM", 0., 0., -hlenQbbe-ptube[2], idrotm[2012], "ONLY");
630 gMC->Gsvolu("QB02","TUBE", idtmed[kAlu], ptube, 3);
633 gMC->Gsvolu("QBA2","TUBE", idtmed[kBe], ptube, 3);
635 gMC->Gspos("QBA2", 1, "QB02", 0., 0., 0, 0, "ONLY");
636 // z = -2.75 -> -2.00
637 gMC->Gspos("QB02", 1, "QBT2", 0., 0.,-2.75+ptube[2], 0, "ONLY");
644 gMC->Gsvolu("QB04","TUBE", idtmed[kAlu], ptube, 3);
645 gMC->Gspos("QB04", 1, "QBT2", 0., 0.,-2.+ptube[2], 0, "ONLY");
652 gMC->Gsvolu("QB06","TUBE", idtmed[kAlu], ptube, 3);
653 gMC->Gspos("QB06", 1, "QBT2", 0., 0., 2.55+ptube[2], 0, "ONLY");
661 gMC->Gsvolu("QBA8","TUBE", idtmed[kInox], ptube, 3);
662 gMC->Gspos("QBA8", 1 ,"QBT2", 0.000, 3.650, -1.25, idrotm[2002], "ONLY");
663 gMC->Gspos("QBA8", 2 ,"QBT2", 3.161, -1.825, -1.25, idrotm[2001], "ONLY");
664 gMC->Gspos("QBA8", 3 ,"QBT2", -3.161, -1.825, -1.25, idrotm[2003], "ONLY");
671 gMC->Gsvolu("QB77","TUBE", idtmed[kC], ptube, 3);
676 gMC->Gsvolu("QBB7","TUBE", idtmed[kInox], ptube, 3);
677 gMC->Gspos("QBB7", 1, "QB77", 0.0, 0.0, 0.55-0.2, 0, "ONLY");
678 gMC->Gspos("QB77", 1, "QBT2", 0.0, 0.0, 2., 0, "ONLY");
681 // Beam pipes between elements
684 gMC->Gsvolu("QB24","TUBE", idtmed[kInox], ptube, 0);
687 ptube[2] = hlenQb24[0];
688 dz = hlenQbbe2 + ptube[2];
689 gMC->Gsposp("QB24", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
691 // Bellow on absorber side
692 dz = dz+hlenQb24[0] + dzb;
693 gMC->Gspos("QBE0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
695 ptube[2] = hlenQb24[1];
696 dz = dz + dzb + ptube[2];
697 gMC->Gsposp("QB24", 2 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
708 gMC->Gsvolu("QFA0","TUBE", idtmed[kInox], ptube, 3);
710 gMC->Gspos("QFA0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
716 ptube[2] = hlenQb24[2];
718 gMC->Gsposp("QB24", 3 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
721 // --- Place the PIPE ghost volume (QBPM) in its mother volume (ALIC)
722 // by rotating it to 180 deg. and make it invisible
724 gMC->Gspos("QBPM",1,"ALIC",0,0,0,idrotm[2013], "ONLY");
725 gMC->Gsbool("QBPM", "L3DX");
726 gMC->Gsbool("QBPM", "L3O3");
727 gMC->Gsbool("QBPM", "L3O4");
731 // ******** Ion Pump volume description starts here ******
738 gMC->Gsvolu("QI32","BOX", idtmed[kInox], pbox, 3);
743 gMC->Gsvolu("QI42","BOX", idtmed[kGetter], pbox, 3);
744 gMC->Gspos("QI42", 1, "QI32", 0.0, 0.0, 0.0, 0, "ONLY");
750 gMC->Gsvolu("QI33","TUBE", idtmed[kInox], ptube, 3);
756 gMC->Gsvolu("QI43","TUBE", idtmed[kAir], ptube, 3);
757 gMC->Gspos("QI43", 1, "QI33", 0.0, 0.0, 0.0, 0, "ONLY");
759 // Connecting tube ->
763 gMC->Gsvolu("QI34","TUBE", idtmed[kInox], ptube, 3);
768 gMC->Gsvolu("QI44","TUBE", idtmed[kAir], ptube, 3);
769 gMC->Gspos("QI44", 1, "QI34", 0.0, 0.0, 0.0, 0, "ONLY");
777 gMC->Gsvolu("QI35","TUBE", idtmed[kInox], ptube, 3);
779 gMC->Gspos("QI32", 1, "QBPM", 0.0, -44.25, zPump, 0, "ONLY");
780 gMC->Gspos("QI33", 1, "QBPM", 0.0, -35.00, zPump,idrotm[2002], "ONLY");
781 gMC->Gspos("QI34", 1, "QBPM", 0.0, -17.90, zPump,idrotm[2002], "ONLY");
782 gMC->Gspos("QI35", 1, "QBPM", 0.0, -24.35, zPump,idrotm[2002], "ONLY");
784 gMC->Gsatt("QBPM", "SEEN", 1);
785 gMC->Gsatt("QBEM", "SEEN", 1);
790 //___________________________________________
791 void AliPIPEv0::CreateMaterials()
794 // Define materials for beam pipe
797 if(fDebug) printf("%s: Create PIPEv0 materials \n",ClassName());
798 Int_t isxfld = gAlice->Field()->Integ();
799 Float_t sxmgmx = gAlice->Field()->Max();
801 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
802 Float_t zsteel[4] = { 26.,24.,28.,14. };
803 Float_t wsteel[4] = { .715,.18,.1,.005 };
805 Float_t aAlBe[2] = { 26.98, 9.01};
806 Float_t zAlBe[2] = { 13.00, 4.00};
807 Float_t wAlBe[2] = { 0.4, 0.6};
811 AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
814 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
817 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
820 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
823 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
826 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
828 // reduced density steel to approximate pump getter material
829 AliMixture(20, "GETTER$", asteel, zsteel, 1.00, 4, wsteel);
832 AliMixture(21, "AlBe$", aAlBe, zAlBe, 2.07, 2, wAlBe);
835 // Defines tracking media parameters.
837 Float_t epsil = .001; // Tracking precision,
838 Float_t stemax = -0.01; // Maximum displacement for multiple scat
839 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
840 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
846 AliMedium(5, "BE", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
849 AliMedium(6, "C", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
852 AliMedium(9, "ALU", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
855 AliMedium(15, "AIR", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
858 AliMedium(16, "VACUUM", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
861 AliMedium(19, "INOX", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
864 AliMedium(20, "GETTER", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
867 AliMedium(21, "AlBe" , 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);