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1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
17
18//-------------------------------------------------------------------------
19// Beam pipe class
20// Default version
21// Author: A.Morsch
22//-------------------------------------------------------------------------
23
24#include <Riostream.h>
25
26#include <TSystem.h>
27#include <TVirtualMC.h>
28
29#include "AliConst.h"
30#include "AliMagF.h"
31#include "AliPIPEv0.h"
32#include "AliRun.h"
33
34ClassImp(AliPIPEv0)
35
36//_____________________________________________________________________________
37AliPIPEv0::AliPIPEv0()
38{
39// Constructor
40 SetPipeMaterial();
41}
42
43//_____________________________________________________________________________
44AliPIPEv0::AliPIPEv0(const char *name, const char *title)
45 : AliPIPE(name,title)
46{
47// Constructor
48 SetPipeMaterial();
49}
50
51
52//___________________________________________
53void AliPIPEv0::CreateGeometry()
54{
55//Begin_Html
56/*
57<img src="picts/pipe.gif">
58*/
59//End_Html
60
61
62//Begin_Html
63/*
64<img src="picts/tree_pipe.gif">
65*/
66//End_Html
67
68 if(fDebug) printf("%s: Create PIPEv0 geometry \n",ClassName());
69
70
71 Int_t *idtmed = fIdtmed->GetArray();
72 Float_t ppcon[90], ptube[3], pbox[3];
73 Int_t i=0;
74
75
76 Int_t idrotm[2099];
77 AliMatrix(idrotm[2001],90.,240., 0., 0., 90.,150.);
78 AliMatrix(idrotm[2002],90., 0., 0., 0., 90.,270.);
79 AliMatrix(idrotm[2003],90.,120., 0., 0., 90., 30.);
80 AliMatrix(idrotm[2004],90.,315., 90., 45., 0., 0.);
81 AliMatrix(idrotm[2005],90.,270., 90., 0., 0., 0.);
82 AliMatrix(idrotm[2006],90.,225., 90.,315., 0., 0.);
83 AliMatrix(idrotm[2007],90.,180., 90.,270., 0., 0.);
84 AliMatrix(idrotm[2008],90.,135., 90.,225., 0., 0.);
85 AliMatrix(idrotm[2009],90., 90., 90.,180., 0., 0.);
86 AliMatrix(idrotm[2010],90., 45., 90.,135., 0., 0.);
87 idrotm[2011] = 0;
88 AliMatrix(idrotm[2012],90.,180., 90., 90.,180., 0.);
89 AliMatrix(idrotm[2013],90., 0., 90., 90.,180., 0.);
90//
91// Bellow
92//
93// distance between bellows
94 const Float_t kdzbb = 9.0;
95// total size of bellow section
96 const Float_t kdzb = 15.0;
97// size of undulated region
98 const Float_t kdzub = 2.0;
99
100// half-lengths of various beam pipe sections
101// central Be-Pipe
102 Float_t hlenQbbe1 = 40.;
103 Float_t hlenQbbe2 = 36.5;
104 Float_t hlenQbbe = (hlenQbbe1+hlenQbbe2)/2.;
105//
106//
107// Float_t hlenQbt1 = 5.5/2.;
108//
109// Pipe outside central region (non-absober side)
110 Float_t hlenQbab = 157.5;
111//
112// Flange non-absorber side
113 Float_t hlenQb29 = 11.5/2.+1.75 + 5.0;
114//
115// Bellow element
116 Float_t hlenQbe0 = kdzb;
117//
118// Inox pipe between Be and Bellow (absorber side)
119 Float_t hlenQb24[3] = {10.5/2., 1.8, 3.3};
120//
121//
122 Float_t hlenQb28 = (800.-hlenQbbe1-2.*hlenQbab-4.*hlenQb29-2.*hlenQbe0)/2.;
123//
124// Position of the pump
125 Float_t zPump = hlenQbbe1+2.*hlenQbab+2.*hlenQb29+kdzb;
126//
127// Inner beam pipe radius
128 const Float_t kRinBe = 2.9;
129 const Float_t kRinSt = 2.92;
130//
131//
132 const Float_t kRoutBe = 2.98;
133 const Float_t kRoutSt = 3.00;
134
135
136//
137 Float_t dz;
138
139//
140// The peam pipe up to the Front Absorber
141//
142// Mother Volume QBPM
143 ppcon[0] = 0;
144 ppcon[1] = 360;
145 ppcon[2] = 20;
146// 1
147 ppcon[3] = -90.;
148 ppcon[4] = 0.;
149 ppcon[5] = 3.1;
150// 2
151 ppcon[6] = -84.;
152 ppcon[7] = 0.;
153 ppcon[8] = 3.1;
154// 3
155 ppcon[9] = -84.;
156 ppcon[10] = 0.;
157 ppcon[11] = 4.4;
158// 4
159 ppcon[12] = -90+2.*hlenQb24[2]+2.8+2.*hlenQb24[1];
160 ppcon[13] = 0.;
161 ppcon[14] = 4.4;
162// 5
163 ppcon[15] = ppcon[12];
164 ppcon[16] = 0.;
165 ppcon[17] = 4.1;
166// 6
167 ppcon[18] = ppcon[15] + 2. + 2.*kdzub+0.2;
168 ppcon[19] = 0.;
169 ppcon[20] = 4.1;
170// 7
171 ppcon[21] = ppcon[18];
172 ppcon[22] = 0.;
173 ppcon[23] = 3.2;
174// 8
175 ppcon[24] = ppcon[21] + 2.* kdzbb-0.4;
176 ppcon[25] = 0.;
177 ppcon[26] = 3.2;
178// 9
179 ppcon[27] = ppcon[24];
180 ppcon[28] = 0.;
181 ppcon[29] = 4.1;
182// 10
183 ppcon[30] = -44.;
184 ppcon[31] = 0.;
185 ppcon[32] = 4.1;
186// 11
187 ppcon[33] = -44.;
188 ppcon[34] = 0;
189 ppcon[35] = 3.0;
190// 12
191 ppcon[36] = 38.;
192 ppcon[37] = 0;
193 ppcon[38] = 3.0;
194// 13
195 ppcon[39] = 38.;
196 ppcon[40] = 0;
197 ppcon[41] = 3.6;
198// 14
199 ppcon[42] = hlenQbbe1+2.*hlenQbab-0.1;
200 ppcon[43] = 0.;
201 ppcon[44] = 3.6;
202// 15
203 ppcon[45] = ppcon[42];
204 ppcon[46] = 0.;
205 ppcon[47] = 3.6;
206// 16
207 ppcon[48] = ppcon[45]+2.*hlenQb29-5.;
208 ppcon[49] = 0.;
209 ppcon[50] = 3.6;
210// 17
211 ppcon[51] = ppcon[48];
212 ppcon[52] = 0.;
213 ppcon[53] = 56.;
214// 18
215 ppcon[54] = ppcon[51]+2.*kdzb+10.;
216 ppcon[55] = 0.;
217 ppcon[56] = 56.;
218// 19
219 ppcon[57] = ppcon[54];
220 ppcon[58] = 0.;
221 ppcon[59] = 3.6;
222// 20
223 ppcon[60] = 800.;
224 ppcon[61] = 0.;
225 ppcon[62] = 3.6;
226
227 gMC->Gsvolu("QBPM", "PCON", idtmed[kAir], ppcon,63);
228
229
230//
231// volume definitions of various sections
232//
233
234//
235// The Vacuum
236 gMC->Gsvolu("QBVA","TUBE", idtmed[kVac], ptube, 0);
237 ptube[0] = 0.0;
238 ptube[1] = kRinSt;
239 ptube[2] = (90.-hlenQbbe2)/2.;
240 dz = -90. + ptube[2];
241 gMC->Gsposp ("QBVA", 1, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
242 dz = dz + ptube[2];
243
244 ptube[1] = kRinBe;
245 ptube[2] = hlenQbbe+hlenQbab;
246 dz = dz + ptube[2];
247 gMC->Gsposp ("QBVA", 2, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
248 dz = dz + ptube[2];
249
250 ptube[1] = kRinSt;
251 ptube[2] = (800.-hlenQbbe1-2.*hlenQbab)/2.;
252 dz = dz + ptube[2];
253 gMC->Gsposp ("QBVA", 3, "QBPM", 0., 0., dz , 0, "ONLY", ptube, 3);
254
255//
256// Be Pipe in central Alice
257 ptube[0] = kRinBe;
258 ptube[1] = kRoutBe;
259 ptube[2] = hlenQbbe;
260
261 gMC->Gsvolu("QBBE","TUBE", idtmed[kBe], ptube, 3);
262
263//
264// Support Ring
265//
266 // Mother
267 ppcon[0] = 0;
268 ppcon[1] = 360;
269 ppcon[2] = 6;
270// 1:
271 ppcon[3] = -1.;
272 ppcon[4] = 3.0;
273 ppcon[5] = 3.4;
274// 2
275 ppcon[6] = -0.8;
276 ppcon[7] = 3.0;
277 ppcon[8] = 3.4;
278// 3
279 ppcon[9] = -0.8;
280 ppcon[10] = 3.0;
281 ppcon[11] = 3.2;
282// 4
283 ppcon[12] = 0.8;
284 ppcon[13] = 3.0;
285 ppcon[14] = 3.2;
286// 5
287 ppcon[15] = 0.8;
288 ppcon[16] = 3.0;
289 ppcon[17] = 3.4;
290// 6
291 ppcon[18] = 1.0;
292 ppcon[19] = 3.0;
293 ppcon[20] = 3.4;
294
295
296 gMC->Gsvolu("QBSR", "PCON", idtmed[kC], ppcon,21);
297 gMC->Gspos("QBSR", 1, "QBPM", 0.0, 0.0, 40., 0, "ONLY");
298 gMC->Gspos("QBSR", 2, "QBPM", 0.0, 0.0, 150., 0, "ONLY");
299 gMC->Gspos("QBSR", 3, "QBPM", 0.0, 0.0, 260., 0, "ONLY");
300 gMC->Gspos("QBSR", 4, "QBPM", 0.0, 0.0,- 46., 0, "ONLY");
301//
302// Flange and Fixed Point: non absorber side
303//
304// ---------->
305//
306// Mother
307 ppcon[0] = 0;
308 ppcon[1] = 360;
309 ppcon[2] = 4;
310// 1:
311 ppcon[3] = -hlenQb29;
312 ppcon[4] = kRinSt;
313 ppcon[5] = 5.8;
314// 2
315 ppcon[6] = ppcon[3]+3.6;
316 ppcon[7] = kRinSt;
317 ppcon[8] = 5.8;
318// 3
319 ppcon[9] = ppcon[6];
320 ppcon[10] = kRinSt;
321 ppcon[11] = 3.6;
322// 4
323 ppcon[12] = hlenQb29;
324 ppcon[13] = kRinSt;
325 ppcon[14] = 3.6;
326
327 gMC->Gsvolu("QB29", "PCON", idtmed[kAir], ppcon,15);
328
329
330// Flange
331 ptube[0] = kRinSt;
332 ptube[1] = 5.7;
333 ptube[2] = 1.75;
334 gMC->Gsvolu("QF29","TUBE", idtmed[kInox], ptube, 3);
335 gMC->Gspos("QF29", 1, "QB29", 0.0, 0.0, -hlenQb29+1.75, 0, "ONLY");
336// Pipe
337 ptube[0] = kRinSt;
338 ptube[1] = 3.0;
339 ptube[2] = hlenQb29;
340 gMC->Gsvolu("QS29","TUBE", idtmed[kInox], ptube, 3);
341 gMC->Gspos("QS29", 1, "QB29", 0.0, 0.0, 0., 0, "ONLY");
342// Fixed point
343 ptube[0] = kRinSt;
344 ptube[1] = 3.5;
345 ptube[2] = 0.3;
346 gMC->Gsvolu("QP29","TUBE", idtmed[kInox], ptube, 3);
347 gMC->Gspos("QP29", 1, "QB29", 0.0, 0.0, -hlenQb29+9.75+3., 0, "ONLY");
348
349//
350//
351// Inox beam pipe: final section on non-absorber side
352
353 ptube[0] = kRinSt;
354 ptube[1] = kRoutSt;
355 ptube[2] = hlenQb28;
356
357 gMC->Gsvolu("QB28","TUBE", idtmed[kInox], ptube, 3);
358
359
360// Al-Be (40-60 wgt%, rho=2.7 g/cm**3) beam pipe
361//
362// This section is under study (A.M. 1/2/2002)
363//
364
365 ptube[0] = kRinBe;
366 if (fPipeMaterial == kAlu) {
367 ptube[1] = 3.0;
368 } else if (fPipeMaterial == kBe) {
369 ptube[1] = kRoutBe;
370 } else if (fPipeMaterial == kInox){
371 ptube[1] = kRoutSt;
372 }
373 ptube[2] = hlenQbab;
374
375 gMC->Gsvolu("QBAB","TUBE", idtmed[fPipeMaterial], ptube, 3);
376
377// 2.5 mm thick SS tube for hanging pump
378/*
379 ptube[0] = Rin;
380 ptube[1] = 3.15;
381 ptube[2] = hlenQb26;
382
383 gMC->Gsvolu("QB26","TUBE", idtmed[kInox], ptube, 3);
384*/
385//
386// Bellows
387//
388//
389// Mother Volume
390 Float_t pconQBE0[33];
391 pconQBE0[ 0]= 0;
392 pconQBE0[ 1]= 360;
393 pconQBE0[ 2]= 10;
394// 1
395 pconQBE0[ 3]= -kdzb;
396 pconQBE0[ 4]= kRinSt;
397 pconQBE0[ 5]= kRoutSt;
398// 2
399 pconQBE0[ 6]= -kdzb+2.;
400 pconQBE0[ 7]= kRinSt;
401 pconQBE0[ 8]= kRoutSt;
402// 3
403 pconQBE0[ 9]= -kdzb+2.;
404 pconQBE0[10]= kRinSt;
405 pconQBE0[11]= 4.00;
406// 4
407 pconQBE0[12]= -kdzb+2.+2.*kdzub;
408 pconQBE0[13]= kRinSt;
409 pconQBE0[14]= 4.00;
410// 5
411 pconQBE0[15]= -kdzb+2.+2.*kdzub;
412 pconQBE0[16]= kRinSt;
413 pconQBE0[17]= kRoutSt;
414// 6
415 pconQBE0[18]= -kdzb+2.+2.*kdzub+2.*kdzbb;
416 pconQBE0[19]= kRinSt;
417 pconQBE0[20]= kRoutSt;
418// 7
419 pconQBE0[21]= -kdzb+2.+2.*kdzub+2.*kdzbb;
420 pconQBE0[22]= kRinSt;
421 pconQBE0[23]= 4.00;
422// 8
423 pconQBE0[24]= -kdzb+2.+4.*kdzub+2.*kdzbb;
424 pconQBE0[25]= kRinSt;
425 pconQBE0[26]= 4.00;
426// 9
427 pconQBE0[27]= -kdzb+2.+4.*kdzub+2.*kdzbb;
428 pconQBE0[28]= kRinSt;
429 pconQBE0[29]= kRoutSt;
430// 10
431 pconQBE0[30]= +kdzb;
432 pconQBE0[31]= kRinSt;
433 pconQBE0[32]= kRoutSt;
434 gMC->Gsvolu("QBE0", "PCON", idtmed[kAir], pconQBE0, 33);
435//
436// Undulated piece mother
437 ptube[0] = kRinSt;
438 ptube[1] = 4.00;
439 ptube[2] = kdzub;
440 gMC->Gsvolu("QBEM","TUBE", idtmed[kAir], ptube, 3);
441 dz = -kdzb+2.+kdzub;
442 gMC->Gspos("QBEM", 2 ,"QBE0", 0.0, 0.0, dz, 0 , "ONLY");
443 gMC->Gspos("QBEM", 1 ,"QBE0", 0.0, 0.0, -dz, idrotm[2012], "ONLY");
444//
445 Float_t pund[30];
446 Float_t uw = 0.02;
447 Float_t ur = 2.*kdzub-12.*uw;
448 Float_t uz = ur/13.;
449 Float_t ut = uz+uw;
450
451 pund[ 0] = 0;
452 pund[ 1] = 360;
453 pund[ 2] = 8;
454
455 pund[ 3] = -ut;
456 pund[ 4] = kRinSt;
457 pund[ 5] = kRinSt+uw;
458
459 pund[ 6] = -ut+uz;
460 pund[ 7] = pund[4];
461 pund[ 8] = pund[5];
462
463 pund[ 9] = pund[6];
464 pund[10] = pund[4];
465 pund[11] = 4.0;
466
467 pund[12] = pund[9]+uw;
468 pund[13] = pund[10];
469 pund[14] = pund[11];
470
471 pund[15] = pund[12];
472 pund[16] = 4.0-uw;
473 pund[17] = pund[14];
474
475 pund[18] = pund[12]+uz;
476 pund[19] = pund[16];
477 pund[20] = pund[17];
478
479 pund[21] = pund[18];
480 pund[22] = kRinSt;
481 pund[23] = pund[20];
482
483 pund[24] = pund[21]+uw;
484 pund[25] = pund[22];
485 pund[26] = pund[23];
486
487 gMC->Gsvolu("QBEU", "PCON", idtmed[kInox], pund, 27);
488
489 for (i = 0; i < 6; i++)
490 {
491 dz = -kdzub+(1+2*i)*ut;
492 gMC->Gspos("QBEU", i+1 ,"QBEM", 0.0, 0.0, dz, 0 , "ONLY");
493 }
494 ptube[0] = kRinSt;
495 ptube[1] = kRinSt+uw;
496 ptube[2] = uz;
497 gMC->Gsvolu("QBEW","TUBE", idtmed[kInox], ptube, 3);
498 gMC->Gspos("QBEW", 1 ,"QBEM", 0.0, 0.0, kdzub-uz, 0 , "ONLY");
499//
500// BeamPipe
501 gMC->Gsvolu("QBEP","TUBE", idtmed[kInox], ptube, 0);
502 ptube[0] = kRinSt;
503 ptube[1] = kRoutSt;
504 ptube[2] = 1.;
505 gMC->Gsposp("QBEP", 1 ,"QBE0", 0.0, 0.0, -kdzb+1., 0 , "ONLY", ptube, 3);
506 gMC->Gsposp("QBEP", 2 ,"QBE0", 0.0, 0.0, kdzb-1., 0 , "ONLY", ptube, 3);
507 ptube[2] = kdzbb;
508 gMC->Gsposp("QBEP", 3 ,"QBE0", 0.0, 0.0, 0., 0 , "ONLY", ptube, 3);
509//
510// End undulated part
511//
512//
513// ----> End Bellow
514//
515// **** Placement of various sections on non-absorber side ****
516//
517 //
518 // first the beryllium section
519 Float_t zpos = -(hlenQbbe2-hlenQbbe1)/2;
520 gMC->Gspos("QBBE", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
521
522 // next meta-metal transition QBT1 on on-absorber side
523// zpos = zpos + hlenQbbe + hlenQbt1;
524// gMC->Gspos("QBT1", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
525
526 // Aluminium OR Al-be alloy section
527 zpos = hlenQbbe1+hlenQbab;
528 gMC->Gspos("QBAB", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
529 //
530 // inox flange at the start of bellow
531 zpos = zpos + hlenQbab + hlenQb29;
532 gMC->Gspos("QB29", 1, "QBPM", 0.0, 0.0, zpos, idrotm[2012], "ONLY");
533 //
534 // bellow section
535 zpos = zpos + hlenQb29 + hlenQbe0;
536 gMC->Gspos("QBE0", 2 ,"QBPM", 0.0, 0.0, zpos, 0, "ONLY");
537 //
538 // inox flange at the end of bellow and start of thick inox for pump
539 zpos = zpos + hlenQbe0 + hlenQb29;
540 gMC->Gspos("QB29", 2, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
541 //
542 //last inox section till 800 cm
543 zpos = zpos + hlenQb29 + hlenQb28;
544 gMC->Gspos("QB28", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
545
546//******** end of placement on no-absorber side *********
547
548 //
549 // **** Absorber side *****
550 //
551 //
552/*
553 // metal-metal transition : Be-Alu on absorber side
554 // Mother Volume
555 ptube[0] = 2.900;
556 ptube[1] = 4.200;
557 ptube[2] = 2.750;
558 gMC->Gsvolu("QBT2","TUBE", idtmed[kAir], ptube, 3);
559 // z = 43.3 - 48.8
560 gMC->Gspos("QBT2", 1, "QBPM", 0., 0., -hlenQbbe-ptube[2], idrotm[2012], "ONLY");
561
562 ptube[0] = 2.900;
563 ptube[1] = 3.150;
564 ptube[2] = 0.375;
565 //
566 // Be-part
567 gMC->Gsvolu("QB02","TUBE", idtmed[kAlu], ptube, 3);
568
569 ptube[1] = 3.000;
570 gMC->Gsvolu("QBA2","TUBE", idtmed[kBe], ptube, 3);
571
572 gMC->Gspos("QBA2", 1, "QB02", 0., 0., 0, 0, "ONLY");
573// z = -2.75 -> -2.00
574 gMC->Gspos("QB02", 1, "QBT2", 0., 0.,-2.75+ptube[2], 0, "ONLY");
575
576 // Alu part
577 ptube[0] = 2.900;
578 ptube[1] = 3.150;
579 ptube[2] = 2.375;
580// z = -2.00 -> 2.75
581 gMC->Gsvolu("QB04","TUBE", idtmed[kAlu], ptube, 3);
582 gMC->Gspos("QB04", 1, "QBT2", 0., 0.,-2.+ptube[2], 0, "ONLY");
583
584
585 ptube[0] = 3.15;
586 ptube[1] = 3.50;
587 ptube[2] = 0.10;
588// z = 2.55 -> 2.75
589 gMC->Gsvolu("QB06","TUBE", idtmed[kAlu], ptube, 3);
590 gMC->Gspos("QB06", 1, "QBT2", 0., 0., 2.55+ptube[2], 0, "ONLY");
591
592
593 // Fixation
594 ptube[0] = 0.0;
595 ptube[1] = 0.1;
596 ptube[2] = 0.5;
597
598 gMC->Gsvolu("QBA8","TUBE", idtmed[kInox], ptube, 3);
599 gMC->Gspos("QBA8", 1 ,"QBT2", 0.000, 3.650, -1.25, idrotm[2002], "ONLY");
600 gMC->Gspos("QBA8", 2 ,"QBT2", 3.161, -1.825, -1.25, idrotm[2001], "ONLY");
601 gMC->Gspos("QBA8", 3 ,"QBT2", -3.161, -1.825, -1.25, idrotm[2003], "ONLY");
602
603 // Carbon ring
604 ptube[0] = 3.15;
605 ptube[1] = 4.10;
606 ptube[2] = 0.55;
607
608 gMC->Gsvolu("QB77","TUBE", idtmed[kC], ptube, 3);
609
610 ptube[0] = 3.15;
611 ptube[1] = 3.50;
612 ptube[2] = 0.10;
613 gMC->Gsvolu("QBB7","TUBE", idtmed[kInox], ptube, 3);
614 gMC->Gspos("QBB7", 1, "QB77", 0.0, 0.0, 0.55-0.2, 0, "ONLY");
615 gMC->Gspos("QB77", 1, "QBT2", 0.0, 0.0, 2., 0, "ONLY");
616 */
617//
618// Beam pipes between elements
619//
620
621 gMC->Gsvolu("QB24","TUBE", idtmed[kInox], ptube, 0);
622 ptube[0] = kRinSt;
623 ptube[1] = kRoutSt;
624 ptube[2] = hlenQb24[0];
625 dz = hlenQbbe2 + ptube[2];
626 gMC->Gsposp("QB24", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
627//
628// Bellow on absorber side
629 dz = dz+hlenQb24[0] + kdzb;
630 gMC->Gspos("QBE0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
631//
632 ptube[2] = hlenQb24[1];
633 dz = dz + kdzb + ptube[2];
634 gMC->Gsposp("QB24", 2 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
635 dz = dz + ptube[2];
636
637//
638// Flange
639//
640// Mother Volume
641 ptube[0] = kRinSt;
642 ptube[1] = 4.300;
643 ptube[2] = 1.4;
644
645 gMC->Gsvolu("QFA0","TUBE", idtmed[kInox], ptube, 3);
646 dz = dz + ptube[2];
647 gMC->Gspos("QFA0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
648 dz = dz + ptube[2];
649//
650//
651 ptube[0] = kRinSt;
652 ptube[1] = kRoutSt;
653 ptube[2] = hlenQb24[2];
654 dz = dz + ptube[2];
655 gMC->Gsposp("QB24", 3 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY", ptube, 3);
656
657
658// --- Place the PIPE ghost volume (QBPM) in its mother volume (ALIC)
659// by rotating it to 180 deg. and make it invisible
660//
661 gMC->Gspos("QBPM",1,"ALIC", 0, 0, 0, 0, "ONLY");
662 gMC->Gsbool("QBPM", "L3DX");
663 gMC->Gsbool("QBPM", "L3O3");
664 gMC->Gsbool("QBPM", "L3O4");
665
666
667//
668// ******** Ion Pump volume description starts here ******
669//
670 //
671 // Getters ->
672 pbox[0] = 6.50;
673 pbox[1] = 6.75;
674 pbox[2] = 15.60;
675 gMC->Gsvolu("QI32","BOX", idtmed[kInox], pbox, 3);
676
677 pbox[0] = 5.90;
678 pbox[1] = 6.15;
679 pbox[2] = 15.00;
680 gMC->Gsvolu("QI42","BOX", idtmed[kGetter], pbox, 3);
681 gMC->Gspos("QI42", 1, "QI32", 0.0, 0.0, 0.0, 0, "ONLY");
682// <-
683
684 ptube[0] = 0.0;
685 ptube[1] = 19.0;
686 ptube[2] = 2.5;
687 gMC->Gsvolu("QI33","TUBE", idtmed[kInox], ptube, 3);
688
689
690 ptube[0] = 0.0;
691 ptube[1] = 15.0;
692 ptube[2] = 2.5;
693 gMC->Gsvolu("QI43","TUBE", idtmed[kAir], ptube, 3);
694 gMC->Gspos("QI43", 1, "QI33", 0.0, 0.0, 0.0, 0, "ONLY");
695//
696// Connecting tube ->
697 ptube[0] = 0.0;
698 ptube[1] = 5.4;
699 ptube[2] = 14.6;
700 gMC->Gsvolu("QI34","TUBE", idtmed[kInox], ptube, 3);
701
702 ptube[0] = 0.0;
703 ptube[1] = 4.8;
704 ptube[2] = 14.6;
705 gMC->Gsvolu("QI44","TUBE", idtmed[kAir], ptube, 3);
706 gMC->Gspos("QI44", 1, "QI34", 0.0, 0.0, 0.0, 0, "ONLY");
707// <-
708
709 //
710 // Flange ->
711 ptube[0] = 5.41;
712 ptube[1] = 7.30;
713 ptube[2] = 2.15;
714 gMC->Gsvolu("QI35","TUBE", idtmed[kInox], ptube, 3);
715// <-
716 gMC->Gspos("QI32", 1, "QBPM", 0.0, -44.25, zPump, 0, "ONLY");
717 gMC->Gspos("QI33", 1, "QBPM", 0.0, -35.00, zPump,idrotm[2002], "ONLY");
718 gMC->Gspos("QI34", 1, "QBPM", 0.0, -17.90, zPump,idrotm[2002], "ONLY");
719 gMC->Gspos("QI35", 1, "QBPM", 0.0, -24.35, zPump,idrotm[2002], "ONLY");
720
721 gMC->Gsatt("QBPM", "SEEN", 1);
722 gMC->Gsatt("QBEM", "SEEN", 1);
723}
724
725
726
727//___________________________________________
728void AliPIPEv0::CreateMaterials()
729{
730 //
731 // Define materials for beam pipe
732 //
733
734 if(fDebug) printf("%s: Create PIPEv0 materials \n",ClassName());
735 Int_t isxfld = gAlice->Field()->Integ();
736 Float_t sxmgmx = gAlice->Field()->Max();
737 // Steel (Inox)
738 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
739 Float_t zsteel[4] = { 26.,24.,28.,14. };
740 Float_t wsteel[4] = { .715,.18,.1,.005 };
741 // AlBe - alloy
742 Float_t aAlBe[2] = { 26.98, 9.01};
743 Float_t zAlBe[2] = { 13.00, 4.00};
744 Float_t wAlBe[2] = { 0.4, 0.6};
745
746 //
747 // Berillium
748 AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
749 //
750 // Carbon
751 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
752 //
753 // Aluminum
754 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
755 //
756 // Air
757 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
758 //
759 // Vacuum
760 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
761 //
762 // stainless Steel
763 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
764 //
765 // reduced density steel to approximate pump getter material
766 AliMixture(20, "GETTER$", asteel, zsteel, 1.00, 4, wsteel);
767 // Al-Be alloy
768 //
769 AliMixture(21, "AlBe$", aAlBe, zAlBe, 2.07, 2, wAlBe);
770 //
771 // ****************
772 // Defines tracking media parameters.
773 //
774 Float_t epsil = .001; // Tracking precision,
775 Float_t stemax = -0.01; // Maximum displacement for multiple scat
776 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
777 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
778 Float_t stmin = -.8;
779 // ***************
780 //
781 // Beryllium
782
783 AliMedium(5, "BE", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
784
785 // Carbon
786 AliMedium(6, "C", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
787 //
788 // Aluminum
789 AliMedium(9, "ALU", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
790 //
791 // Air
792 AliMedium(15, "AIR", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
793 //
794 // Vacuum
795 AliMedium(16, "VACUUM", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
796 //
797 // Steel
798 AliMedium(19, "INOX", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
799 //
800 // Getter
801 AliMedium(20, "GETTER", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
802 //
803 // AlBe - Aloy
804 AliMedium(21, "AlBe" , 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
805
806}
807
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