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4c039060 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/*
17$Log$
9e1a0ddb 18Revision 1.15 2001/05/02 11:50:18 morsch
19New layout of the non-absorber side provided by Y. Viyogi. Not the final design
20but the prsent most realistic.
21
cd9c4f3a 22Revision 1.14 2001/01/20 16:56:33 morsch
23Put air in connecting tubes and flanges of vacuum pump.
24
14b75006 25Revision 1.13 2001/01/20 16:35:27 morsch
26Increase mother volume for bellows.
27
1416b7f3 28Revision 1.12 2000/12/21 16:41:06 morsch
29Coding convention clean-up (RS3)
30
13391c3e 31Revision 1.11 2000/11/28 16:06:57 morsch
32Undulated beam-pipe replaced by Al-Be (40,60) pipe 1.5 mm thick.
33
2196bc42 34Revision 1.10 2000/11/24 13:00:37 morsch
35- Geometry and materials imported from euclid output
36- include comments
37- better struturing of volume tree
38- improved version of flange close to front absorber
39- more realistic pump materials
40- undulated beam pipe imported from v3.
41
7bd7faf8 42Revision 1.9 2000/10/02 21:28:15 fca
43Removal of useless dependecies via forward declarations
44
94de3818 45Revision 1.8 2000/06/11 12:37:01 morsch
46Coding rule violations corrected
47
b43eb0dc 48Revision 1.7 2000/02/23 16:25:24 fca
49AliVMC and AliGeant3 classes introduced
50ReadEuclid moved from AliRun to AliModule
51
b13db077 52Revision 1.6 1999/09/29 09:24:30 fca
53Introduction of the Copyright and cvs Log
54
4c039060 55*/
56
fe4da5cc 57////////////////////////////////////////////////
58// Beam pipe class /
59////////////////////////////////////////////////
60
fe4da5cc 61#include "AliPIPEv0.h"
62#include "AliRun.h"
7bd7faf8 63#include "AliConst.h"
64#include "AliMagF.h"
94de3818 65#include "AliMC.h"
fe4da5cc 66#include "TSystem.h"
67
68ClassImp(AliPIPEv0)
69
70//_____________________________________________________________________________
b8032157 71AliPIPEv0::AliPIPEv0()
fe4da5cc 72{
b43eb0dc 73// Constructor
fe4da5cc 74}
75
76//_____________________________________________________________________________
77AliPIPEv0::AliPIPEv0(const char *name, const char *title)
78 : AliPIPE(name,title)
79{
b43eb0dc 80// Constructor
fe4da5cc 81}
82
83
84//___________________________________________
85void AliPIPEv0::CreateGeometry()
86{
fe4da5cc 87//Begin_Html
88/*
1439f98e 89<img src="picts/pipe.gif">
fe4da5cc 90*/
91//End_Html
92
93
94//Begin_Html
95/*
1439f98e 96<img src="picts/tree_pipe.gif">
fe4da5cc 97*/
98//End_Html
99
9e1a0ddb 100 if(fDebug) printf("%s: Create PIPEv0 geometry \n",ClassName());
fe4da5cc 101
fe4da5cc 102
7bd7faf8 103 Int_t *idtmed = fIdtmed->GetArray();
cd9c4f3a 104 Float_t ppcon[48], ptube[3], pbox[3];
7bd7faf8 105 Int_t i=0;
106
2196bc42 107 enum {kC=6, kAlu=9, kInox=19, kGetter=20, kBe=5, kVac=16, kAir=15, kAlBe=21};
7bd7faf8 108
109 Int_t idrotm[2099];
110 AliMatrix(idrotm[2001],90.,240., 0., 0., 90.,150.);
111 AliMatrix(idrotm[2002],90., 0., 0., 0., 90.,270.);
112 AliMatrix(idrotm[2003],90.,120., 0., 0., 90., 30.);
113 AliMatrix(idrotm[2004],90.,315., 90., 45., 0., 0.);
114 AliMatrix(idrotm[2005],90.,270., 90., 0., 0., 0.);
115 AliMatrix(idrotm[2006],90.,225., 90.,315., 0., 0.);
116 AliMatrix(idrotm[2007],90.,180., 90.,270., 0., 0.);
117 AliMatrix(idrotm[2008],90.,135., 90.,225., 0., 0.);
118 AliMatrix(idrotm[2009],90., 90., 90.,180., 0., 0.);
119 AliMatrix(idrotm[2010],90., 45., 90.,135., 0., 0.);
120 idrotm[2011] = 0;
121 AliMatrix(idrotm[2012],90.,180., 90., 90.,180., 0.);
122 AliMatrix(idrotm[2013],90., 0., 90., 90.,180., 0.);
123
7bd7faf8 124
fe4da5cc 125//
126// The peam pipe up to the Front Absorber
fe4da5cc 127//
7bd7faf8 128// Mother Volume QBPM
cd9c4f3a 129 const Float_t dbe1 = 15.;
130 const Float_t dbe2 = 15.;
7bd7faf8 131 ppcon[0] = 0;
132 ppcon[1] = 360;
cd9c4f3a 133 ppcon[2] = 15;
7bd7faf8 134// 1:
135 ppcon[3] = - 90;
136 ppcon[4] = 0;
137 ppcon[5] = 5.8;
138// 2
139 ppcon[6] = - 81.0;
140 ppcon[7] = 0.;
141 ppcon[8] = 5.8;
142// 3
143 ppcon[9] = - 81.;
144 ppcon[10] = 0.;
145 ppcon[11] = 4.22;
146// 4
cd9c4f3a 147 ppcon[12] = - 28.00-dbe2;
7bd7faf8 148 ppcon[13] = 0;
149 ppcon[14] = 4.22;
150// 5
cd9c4f3a 151 ppcon[15] = - 28.00-dbe2;
7bd7faf8 152 ppcon[16] = 0;
153 ppcon[17] = 3.2;
154// 6
155 ppcon[18] = 0;
156 ppcon[19] = 0;
157 ppcon[20] = 3.2;
158// 7
cd9c4f3a 159 ppcon[21] = 28.+dbe1;
7bd7faf8 160 ppcon[22] = 0;
161 ppcon[23] = 3.2;
162// 8
cd9c4f3a 163 ppcon[24] = 28.+dbe1;
7bd7faf8 164 ppcon[25] = 0;
165 ppcon[26] = 4.22;
166// 9
167 ppcon[27] = 250;
168 ppcon[28] = 0;
169 ppcon[29] = 4.22;
170// 10
171 ppcon[30] = 250;
172 ppcon[31] = 0;
173 ppcon[32] = 5;
174// 11
cd9c4f3a 175 ppcon[33] = 365;
7bd7faf8 176 ppcon[34] = 0;
177 ppcon[35] = 5;
cd9c4f3a 178// 12
179 ppcon[36] = 365;
180 ppcon[37] = 0;
181 ppcon[38] = 56;
182// 13
183 ppcon[39] = 405;
184 ppcon[40] = 0;
185 ppcon[41] = 56;
186// 14
187 ppcon[42] = 405;
188 ppcon[43] = 0;
189 ppcon[44] = 5;
190// 15
191 ppcon[45] = 800;
192 ppcon[46] = 0;
193 ppcon[47] = 5;
194
195 gMC->Gsvolu("QBPM", "PCON", idtmed[kAir], ppcon, 48);
7bd7faf8 196
197//
198// The Vacuum
199 ptube[0] = 0.0;
200 ptube[1] = 2.9;
201 ptube[2] = 445.0;
202
203 gMC->Gsvolu("QBVA","TUBE", idtmed[kVac], ptube, 3);
cd9c4f3a 204 gMC->Gspos ("QBVA", 1, "QBPM", 0., 0., 355., 0, "ONLY");
7bd7faf8 205//
cd9c4f3a 206// volume definitions of various sections
207//
208// distance between bellows
209 const Float_t dzbb = 8.0;
210// size of bellow
211 const Float_t dzb = 11.4;
212
213 //half-lengths of various beam pipe sections
214 Float_t hlenQbbe=43.3;
215 Float_t hlenQbt1=5.5/2.;
216 Float_t hlenQbab=286.6/2.;
217 Float_t hlenQb10=286.6/2.;
218 Float_t hlenQb29=4.4/2.;
219 Float_t hlenQbe0=(2.* dzb + dzbb)/2.;
220 Float_t hlenQb26=20./2.;
221 Float_t hlenQb28=400.6/2.;
222
223// Be Pipe in central Alice : length 43.3 * 2
7bd7faf8 224 ptube[0] = 2.90;
225 ptube[1] = 3.00;
cd9c4f3a 226 ptube[2] = hlenQbbe;
7bd7faf8 227
228 gMC->Gsvolu("QBBE","TUBE", idtmed[kBe], ptube, 3);
7bd7faf8 229
230//
cd9c4f3a 231// Metal-Metal Transitions : non-absorber side
7bd7faf8 232//
cd9c4f3a 233// Be-Al (or Be to Be-Al alloy)
7bd7faf8 234// Mother Volume
235 ptube[0] = 2.900;
236 ptube[1] = 4.200;
cd9c4f3a 237 ptube[2] = hlenQbt1;
7bd7faf8 238 gMC->Gsvolu("QBT1","TUBE", idtmed[kAir], ptube, 3);
7bd7faf8 239
240 ptube[0] = 2.900;
241 ptube[1] = 3.150;
242 ptube[2] = 0.375;
243 //
244 // Be-part
cd9c4f3a 245 gMC->Gsvolu("QB01","TUBE", idtmed[kAlu], ptube, 3);
7bd7faf8 246
247 ptube[1] = 3.000;
248 gMC->Gsvolu("QBA1","TUBE", idtmed[kBe], ptube, 3);
249
250 gMC->Gspos("QBA1", 1, "QB01", 0., 0., 0, 0, "ONLY");
251 gMC->Gspos("QB01", 1, "QBT1", 0., 0.,-2.75+ptube[2], 0, "ONLY");
252
cd9c4f3a 253 // Al-part
7bd7faf8 254 //
255 ptube[0] = 2.900;
256 ptube[1] = 3.150;
257 ptube[2] = 2.375;
258
cd9c4f3a 259 gMC->Gsvolu("QB03","TUBE", idtmed[kAlu], ptube, 3);
7bd7faf8 260 gMC->Gspos("QB03", 1, "QBT1", 0., 0.,-2.+ptube[2], 0, "ONLY");
261
262
263 ptube[0] = 3.15;
264 ptube[1] = 3.50;
265 ptube[2] = 0.10;
266
cd9c4f3a 267 gMC->Gsvolu("QB05","TUBE", idtmed[kAlu], ptube, 3);
7bd7faf8 268 gMC->Gspos("QB05", 1, "QBT1", 0., 0., 2.55+ptube[2], 0, "ONLY");
269
270
271 // Fixations
272 ptube[0] = 0.0;
273 ptube[1] = 0.1;
274 ptube[2] = 0.5;
275
276 gMC->Gsvolu("QB08","TUBE", idtmed[kInox], ptube, 3);
277 gMC->Gspos("QB08", 1 ,"QBT1", 0.000, 3.650, -1.25, idrotm[2002], "ONLY");
278 gMC->Gspos("QB08", 2 ,"QBT1", 3.161, -1.825, -1.25, idrotm[2001], "ONLY");
279 gMC->Gspos("QB08", 3 ,"QBT1", -3.161, -1.825, -1.25, idrotm[2003], "ONLY");
280
281 // Carbon ring
282 ptube[0] = 3.15;
283 ptube[1] = 4.10;
284 ptube[2] = 0.55;
285
286 gMC->Gsvolu("QB07","TUBE", idtmed[kC], ptube, 3);
287
288 ptube[0] = 3.15;
289 ptube[1] = 3.50;
290 ptube[2] = 0.10;
291 gMC->Gsvolu("QBA7","TUBE", idtmed[kInox], ptube, 3);
292 gMC->Gspos("QBA7", 1, "QB07", 0.0, 0.0, 0.55-0.2, 0, "ONLY");
293 gMC->Gspos("QB07", 1, "QBT1", 0.0, 0.0, 2., 0, "ONLY");
294
7bd7faf8 295
296//
297// 1st section Alu non-absorber side
298 ptube[0] = 2.9;
299 ptube[1] = 3.0;
cd9c4f3a 300 ptube[2] = hlenQb10;
7bd7faf8 301
302 gMC->Gsvolu("QB10","TUBE", idtmed[kAlu], ptube, 3);
7bd7faf8 303//
304// Support rollers: non absorber side
305//
306// Mother volume
307 ptube[0] = 3.2;
308 ptube[1] = 4.8;
309 ptube[2] = 3.0;
310 gMC->Gsvolu("QBRM","TUBE", idtmed[kAir], ptube, 3);
7bd7faf8 311
312 ptube[0] = 0.0;
313 ptube[1] = 0.7;
314 ptube[2] = 3.0;
315
316 gMC->Gsvolu("QB30","TUBE", idtmed[kInox], ptube, 3);
317
318 for (i=0; i<8; i++) {
319 Float_t phi = 45.+i*45.*kDegrad;
320 Float_t xpos = 4.*TMath::Sin(phi);
321 Float_t ypos = 4.*TMath::Cos(phi);
322 gMC->Gspos("QB30", i+1, "QBRM", xpos, ypos, 0, idrotm[2004+i], "ONLY");
323 }
324
325//
326// Flanges: non absorber side
327 ptube[0] = 3.0;
328 ptube[1] = 4.9;
cd9c4f3a 329 ptube[2] = hlenQb29;
7bd7faf8 330
331 gMC->Gsvolu("QB29","TUBE", idtmed[kInox], ptube, 3);
cd9c4f3a 332
7bd7faf8 333//
cd9c4f3a 334// Inox beam pipe: final section on non-absorber side
7bd7faf8 335
336 ptube[0] = 2.90;
337 ptube[1] = 2.98;
cd9c4f3a 338 ptube[2] = hlenQb28;
7bd7faf8 339
340 gMC->Gsvolu("QB28","TUBE", idtmed[kInox], ptube, 3);
7bd7faf8 341
342//
343// Undulated beam pipe
344//
2196bc42 345/*
7bd7faf8 346 Float_t pitch=0.25;
347 Float_t thick=0.015;
348 Float_t zundul=171;
349 Float_t rundul=3.0;
350 char cn48[][5]={"QN21","QN22","QN23","QN24","QN25","QN26","QN27","QN28"};
351
352 Undulation("QUND",pitch,thick,zundul,rundul,cn48);
353 gMC->Gspos("QUND", 1, "QBPM", 0., 0., 335.+zundul, 0, "ONLY");
2196bc42 354*/
355
356// Al-Be (40-60 wgt%, rho=2.7 g/cm**3) beam pipe
357//
358 ptube[0] = 2.90;
359 ptube[1] = 3.05;
cd9c4f3a 360 ptube[2] = hlenQbab;
2196bc42 361
362 gMC->Gsvolu("QBAB","TUBE", idtmed[kAlBe], ptube, 3);
2196bc42 363
7bd7faf8 364
365//
cd9c4f3a 366// last piece : inox pipe from pump till end
7bd7faf8 367//
cd9c4f3a 368 //ptube[0] = 2.90;
369 //ptube[1] = 2.98;
370 //ptube[2] = 61.55;
7bd7faf8 371
cd9c4f3a 372 //gMC->Gsvolu("QB48","TUBE", idtmed[kInox], ptube, 3);
7bd7faf8 373
cd9c4f3a 374/*
7bd7faf8 375 ptube[0] = 2.90;
376 ptube[1] = 2.98;
377 ptube[2] = 1.0;
378
379 gMC->Gsvolu("QB27","TUBE", idtmed[kInox], ptube, 3);
380 gMC->Gspos("QB27", 1, "QBPM", 0.0, 0.0, 208.1, 0, "ONLY");
cd9c4f3a 381*/
7bd7faf8 382//
cd9c4f3a 383// Aluminium collar for support rollers
7bd7faf8 384
cd9c4f3a 385 gMC->Gsvolu("QB25","TUBE", idtmed[kAlu], ptube, 0);
7bd7faf8 386
cd9c4f3a 387
388// 2.5 mm thick SS tube for hanging pump
389 ptube[0] = 2.90;
7bd7faf8 390 ptube[1] = 3.15;
cd9c4f3a 391 ptube[2] = hlenQb26;
7bd7faf8 392
cd9c4f3a 393 gMC->Gsvolu("QB26","TUBE", idtmed[kInox], ptube, 3);
7bd7faf8 394
395//
396// Bellows
fe4da5cc 397//
7bd7faf8 398// Mother Volume
399 ptube[0] = 2.90;
400 ptube[1] = 3.75;
cd9c4f3a 401 ptube[2] = (2.*dzb+dzbb)/2.;
7bd7faf8 402 gMC->Gsvolu("QBE0","TUBE", idtmed[kAir], ptube, 3);
7bd7faf8 403
cd9c4f3a 404 ptube[2] = dzb/2.;
7bd7faf8 405
406 gMC->Gsvolu("QBEM","TUBE", idtmed[kAir], ptube, 3);
cd9c4f3a 407 Float_t dz = (dzb+dzbb)/2.;
408 gMC->Gspos("QBEM", 2 ,"QBE0", 0.0, 0.0, -dz, 0 , "ONLY");
409 gMC->Gspos("QBEM", 1 ,"QBE0", 0.0, 0.0, dz, idrotm[2012], "ONLY");
7bd7faf8 410
411 ptube[0] = 2.90;
412 ptube[1] = 3.25;
413 ptube[2] = 3.70;
414
415 gMC->Gsvolu("QB19","TUBE", idtmed[kVac], ptube, 3);
416 gMC->Gspos("QB19", 1 ,"QBEM", 0.0, 0.0, 0.5, 0 , "ONLY");
417
418 ptube[0] = 3.25;
419 ptube[1] = 3.74;
420 ptube[2] = 0.095;
421
422 gMC->Gsvolu("QB18","TUBE", idtmed[kVac], ptube, 3);
423 for (i=0; i<15; i++) {
424 gMC->Gspos("QB18", i+1, "QBEM", 0.0, 0.0, 3.3-i*0.4, 0, "ONLY");
425 }
426
427 ptube[0] = 2.90;
428 ptube[1] = 3.00;
429 ptube[2] = 1.20;
430
431 gMC->Gsvolu("QB21","TUBE", idtmed[kVac], ptube, 3);
432 gMC->Gspos("QB21", 1 ,"QBEM", 0.0, 0.0, -4.5, 0 , "ONLY");
433
434 ptube[0] = 3.250;
435 ptube[1] = 3.750;
436 ptube[2] = 0.005;
437
438 gMC->Gsvolu("QB15","TUBE", idtmed[kInox], ptube, 3);
439 for (i=0; i<30; i++) {
440 gMC->Gspos("QB15", i+1, "QBEM", 0.0, 0.0, 3.4-i*0.2, 0, "ONLY");
441 }
442
443 ptube[0] = 3.740;
444 ptube[1] = 3.750;
445 ptube[2] = 0.095;
446
447 gMC->Gsvolu("QB16","TUBE", idtmed[kInox], ptube, 3);
448 for (i=0; i<15; i++) {
449 gMC->Gspos("QB16", i+1, "QBEM", 0.0, 0.0, 3.3-i*0.4, 0, "ONLY");
450 }
451
452 ptube[0] = 3.250;
453 ptube[1] = 3.260;
454 ptube[2] = 0.095;
455
456 gMC->Gsvolu("QB17","TUBE", idtmed[kInox], ptube, 3);
457 for (i=0; i<14; i++) {
458 gMC->Gspos("QB17", i+1, "QBEM", 0.0, 0.0, 3.1-i*0.4, 0, "ONLY");
459 }
460
461 ptube[0] = 3.250;
462 ptube[1] = 3.260;
463 ptube[2] = 0.3975;
464
465 gMC->Gsvolu("QB14","TUBE", idtmed[kInox], ptube, 3);
466 gMC->Gspos("QB14", 2 ,"QBEM", 0.0, 0.0, -2.8025, 0 , "ONLY");
467 gMC->Gspos("QB14", 1 ,"QBEM", 0.0, 0.0, 3.8025, 0 , "ONLY");
468
469 ptube[0] = 2.900;
470 ptube[1] = 3.260;
471 ptube[2] = 0.050;
472
473 gMC->Gsvolu("QB13","TUBE", idtmed[kInox], ptube, 3);
474 gMC->Gspos("QB13", 2 ,"QBEM", 0.0, 0.0, -3.25, 0 , "ONLY");
475 gMC->Gspos("QB13", 1 ,"QBEM", 0.0, 0.0, 4.25, 0 , "ONLY");
476
477 ptube[0] = 2.900;
478 ptube[1] = 3.000;
479 ptube[2] = 0.700;
480
481 gMC->Gsvolu("QB12","TUBE", idtmed[kInox], ptube, 3);
482 gMC->Gspos("QB12", 1 ,"QBEM", 0.0, 0.0, 5.0, 0, "ONLY");
483
484
485//
486// pipe between Bellows
487 ptube[0] = 2.9;
488 ptube[1] = 3.0;
cd9c4f3a 489 ptube[2] = dzbb/2.;
7bd7faf8 490 gMC->Gsvolu("QB23","TUBE", idtmed[kInox], ptube, 3);
491 gMC->Gspos("QB23", 1 ,"QBE0", 0.0, 0.0, 0.0, 0, "ONLY");
492
493//
494// End Bellow
cd9c4f3a 495
496// **** placement of various sections on non-absorber side ****
497 //
498 // first the beryllium section : 43.3 cm long on both sides of IP
499 // zstart=0, zend=43.3, length=43.3 on one side
500 Float_t zpos=0;
501 gMC->Gspos("QBBE", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
502
503 // next meta-metal transition QBT1 on on-absorber side
504 // zstart=43.3, zend=48.8, length=5.5
505 zpos = zpos + hlenQbbe + hlenQbt1;
506 gMC->Gspos("QBT1", 1, "QBPM", 0., 0., zpos, 0, "ONLY");
507
508 // Aluminium OR Al-be alloy section
509 //zpos=zpos + hlenQbt1 + hlenQb10;
510 //gMC->Gspos("QB10", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
511 // zstart= 48.8, zend=335.4, length=286.6
512 zpos = zpos + hlenQbt1 + hlenQbab;
513 gMC->Gspos("QBAB", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
514
515 // inox flange at the start of bellow
516 // zstart=335.4, zend=339.8, length=4.4
517 zpos = zpos + hlenQbab + hlenQb29;
518 gMC->Gspos("QB29", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
519
520 // bellow section
521 // zstart=339.8, zend=370.6, length=30.9
522 zpos = zpos + hlenQb29 + hlenQbe0;
523 gMC->Gspos("QBE0", 2 ,"QBPM", 0.0, 0.0, zpos, 0, "ONLY");
524
525 // inox flange at the end of bellow and start of thick inox for pump
526 // zstart=370.6, zend=375.0, length=4.4
527 zpos = zpos + hlenQbe0 + hlenQb29;
528 gMC->Gspos("QB29", 2, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
529
530 // 2.5mm thick inox section to hang the pump
531 // zstart=375.0, zend=395.0, length=20.0
532 zpos = zpos + hlenQb29 + hlenQb26;
533 gMC->Gspos("QB26", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
534
535 //inox flange at the end of pump section to join to next pipe
536 // zstart=395.0, zend=399.4, length=4.4
537 zpos = zpos + hlenQb26 + hlenQb29;
538 gMC->Gspos("QB29", 3, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
539
540 //last inox section till 800 cm
541 // zstart=399.4, zend=800., length=400.6
542 zpos = zpos + hlenQb29 + hlenQb28;
543 gMC->Gspos("QB28", 1, "QBPM", 0.0, 0.0, zpos, 0, "ONLY");
544
545
546 // aluminium collars and support rollers at two places
547
548 ptube[0] = 3.0;
549 ptube[1] = 3.15;
550 ptube[2] = 2.75;
551
552 gMC->Gsposp("QB25", 1, "QBPM", 0., 0., 654.8, 0, "ONLY", ptube, 3);
553 gMC->Gspos("QBRM", 1, "QBPM", 0., 0., 654.8, 0, "ONLY");
554
555 ptube[0] = 3.05;
556 ptube[1] = 3.20;
557 gMC->Gsposp("QB25", 2, "QBPM", 0., 0., 254.8, 0, "ONLY", ptube, 3);
558 gMC->Gspos("QBRM", 2, "QBPM", 0., 0., 254.8, 0, "ONLY");
559
560
561
562//******** end of placement on no-absorber side *********
563
564 //
565 // **** Absorber side *****
566 //
567 //
568 // metal-metal transition : Be-Alu on absorber side
569 // Mother Volume
570 ptube[0] = 2.900;
571 ptube[1] = 4.200;
572 ptube[2] = 2.750;
573 gMC->Gsvolu("QBT2","TUBE", idtmed[kAir], ptube, 3);
574 // z = 43.3 - 48.8
575 gMC->Gspos("QBT2", 1, "QBPM", 0., 0., -hlenQbbe-ptube[2], idrotm[2012], "ONLY");
576
577 ptube[0] = 2.900;
578 ptube[1] = 3.150;
579 ptube[2] = 0.375;
580 //
581 // Be-part
582 gMC->Gsvolu("QB02","TUBE", idtmed[kAlu], ptube, 3);
583
584 ptube[1] = 3.000;
585 gMC->Gsvolu("QBA2","TUBE", idtmed[kBe], ptube, 3);
586
587 gMC->Gspos("QBA2", 1, "QB02", 0., 0., 0, 0, "ONLY");
588// z = -2.75 -> -2.00
589 gMC->Gspos("QB02", 1, "QBT2", 0., 0.,-2.75+ptube[2], 0, "ONLY");
590
591 // Alu part
592 ptube[0] = 2.900;
593 ptube[1] = 3.150;
594 ptube[2] = 2.375;
595// z = -2.00 -> 2.75
596 gMC->Gsvolu("QB04","TUBE", idtmed[kAlu], ptube, 3);
597 gMC->Gspos("QB04", 1, "QBT2", 0., 0.,-2.+ptube[2], 0, "ONLY");
598
599
600 ptube[0] = 3.15;
601 ptube[1] = 3.50;
602 ptube[2] = 0.10;
603// z = 2.55 -> 2.75
604 gMC->Gsvolu("QB06","TUBE", idtmed[kAlu], ptube, 3);
605 gMC->Gspos("QB06", 1, "QBT2", 0., 0., 2.55+ptube[2], 0, "ONLY");
606
607
608 // Fixation
609 ptube[0] = 0.0;
610 ptube[1] = 0.1;
611 ptube[2] = 0.5;
612
613 gMC->Gsvolu("QBA8","TUBE", idtmed[kInox], ptube, 3);
614 gMC->Gspos("QBA8", 1 ,"QBT2", 0.000, 3.650, -1.25, idrotm[2002], "ONLY");
615 gMC->Gspos("QBA8", 2 ,"QBT2", 3.161, -1.825, -1.25, idrotm[2001], "ONLY");
616 gMC->Gspos("QBA8", 3 ,"QBT2", -3.161, -1.825, -1.25, idrotm[2003], "ONLY");
617
618 // Carbon ring
619 ptube[0] = 3.15;
620 ptube[1] = 4.10;
621 ptube[2] = 0.55;
622
623 gMC->Gsvolu("QB77","TUBE", idtmed[kC], ptube, 3);
624
625 ptube[0] = 3.15;
626 ptube[1] = 3.50;
627 ptube[2] = 0.10;
628 gMC->Gsvolu("QBB7","TUBE", idtmed[kInox], ptube, 3);
629 gMC->Gspos("QBB7", 1, "QB77", 0.0, 0.0, 0.55-0.2, 0, "ONLY");
630 gMC->Gspos("QB77", 1, "QBT2", 0.0, 0.0, 2., 0, "ONLY");
631
632
7bd7faf8 633// beam pipe between metal-metal transition and bellows
634 ptube[0] = 2.9;
635 ptube[1] = 3.0;
cd9c4f3a 636 ptube[2] = (81.7-(2.*dzb+dzbb)-(hlenQbbe+5.5))/2.;
7bd7faf8 637
cd9c4f3a 638
7bd7faf8 639 gMC->Gsvolu("QB24","TUBE", idtmed[kInox], ptube, 3);
cd9c4f3a 640// z = 48.8 - 50.9
641 dz = (hlenQbbe+5.5)+ptube[2];
642 gMC->Gspos("QB24", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
7bd7faf8 643//
644// beam pipe between flange and bellows
645 ptube[0] = 2.90;
646 ptube[1] = 3.00;
647 ptube[2] = 0.45;
648
649 gMC->Gsvolu("QB22","TUBE", idtmed[kInox], ptube, 3);
650 gMC->Gspos("QB22", 1 ,"QBPM", 0.0, 0.0, -82.15, 0, "ONLY");
651
652//
653// Flange
654//
655// Mother Volume
656 ptube[0] = 2.900;
657 ptube[1] = 4.300;
658 ptube[2] = 1.400;
659
660 gMC->Gsvolu("QFA0","TUBE", idtmed[kAlu], ptube, 3);
661 gMC->Gspos("QFA0", 1 ,"QBPM", 0.0, 0.0, -84.0, 0, "ONLY");
662//
663// inner Inox piece
664 ptube[0] = 2.900;
665 ptube[1] = 3.500;
666 ptube[2] = 0.450;
667 gMC->Gsvolu("QFA1","TUBE", idtmed[kInox], ptube, 3);
668 gMC->Gspos("QFA1", 1 ,"QFA0", 0.0, 0.0, 0.225, 0, "ONLY");
669//
670// 8 x M5 Inox
671 ptube[0] = 0.000;
672 ptube[1] = 0.250;
673 ptube[2] = 1.400;
674 gMC->Gsvolu("QFA2","TUBE", idtmed[kInox], ptube, 3);
675 for (i=0; i<8; i++) {
676 Float_t phi = i*45.*kDegrad;
677 Float_t xpos = 3.9*TMath::Sin(phi);
678 Float_t ypos = 3.9*TMath::Cos(phi);
679 gMC->Gspos("QFA2", i+1, "QFA0", xpos, ypos, 0., 0, "ONLY");
680 }
681
682
683 ptube[0] = 2.900;
684 ptube[1] = 3.000;
685 ptube[2] = 2.300;
686
687 gMC->Gsvolu("QB32","TUBE", idtmed[kInox], ptube, 3);
688 gMC->Gspos("QB32", 1 ,"QBPM", 0.0, 0.0, -90.+2.3, 0, "ONLY");
689
cd9c4f3a 690 //bellow on absorber side
691 ptube[2] = (2.*dzb+dzbb)/2.;
692 dz = (81.7-ptube[2]);
693 gMC->Gspos("QBE0", 1 ,"QBPM", 0.0, 0.0, -dz, 0, "ONLY");
694
695
fe4da5cc 696// --- Place the PIPE ghost volume (QBPM) in its mother volume (ALIC)
cd9c4f3a 697// by rotating it to 180 deg. and make it invisible
fe4da5cc 698//
7bd7faf8 699
fe4da5cc 700
7bd7faf8 701 gMC->Gspos("QBPM",1,"ALIC",0,0,0,idrotm[2013], "ONLY");
702
cd9c4f3a 703
7bd7faf8 704//
cd9c4f3a 705// ******** Ion Pump volume description starts here ******
7bd7faf8 706//
7bd7faf8 707 //
708 // Getters ->
709 pbox[0] = 6.50;
710 pbox[1] = 6.75;
711 pbox[2] = 15.60;
712 gMC->Gsvolu("QI32","BOX", idtmed[kInox], pbox, 3);
713
714 pbox[0] = 5.90;
715 pbox[1] = 6.15;
716 pbox[2] = 15.00;
717 gMC->Gsvolu("QI42","BOX", idtmed[kGetter], pbox, 3);
718 gMC->Gspos("QI42", 1, "QI32", 0.0, 0.0, 0.0, 0, "ONLY");
719// <-
720
721 ptube[0] = 0.0;
722 ptube[1] = 19.0;
723 ptube[2] = 2.5;
724 gMC->Gsvolu("QI33","TUBE", idtmed[kInox], ptube, 3);
725
726
727 ptube[0] = 0.0;
728 ptube[1] = 15.0;
729 ptube[2] = 2.5;
14b75006 730 gMC->Gsvolu("QI43","TUBE", idtmed[kAir], ptube, 3);
7bd7faf8 731 gMC->Gspos("QI43", 1, "QI33", 0.0, 0.0, 0.0, 0, "ONLY");
732//
733// Connecting tube ->
734 ptube[0] = 0.0;
735 ptube[1] = 5.4;
cd9c4f3a 736 //ptube[2] = 13.7;
737 ptube[2] = 14.6;
7bd7faf8 738 gMC->Gsvolu("QI34","TUBE", idtmed[kInox], ptube, 3);
739
740 ptube[0] = 0.0;
741 ptube[1] = 4.8;
cd9c4f3a 742 ptube[2] = 14.6;
14b75006 743 gMC->Gsvolu("QI44","TUBE", idtmed[kAir], ptube, 3);
7bd7faf8 744 gMC->Gspos("QI44", 1, "QI34", 0.0, 0.0, 0.0, 0, "ONLY");
745// <-
746
747 //
748 // Flange ->
cd9c4f3a 749 ptube[0] = 5.41;
7bd7faf8 750 ptube[1] = 7.30;
751 ptube[2] = 2.15;
752 gMC->Gsvolu("QI35","TUBE", idtmed[kInox], ptube, 3);
7bd7faf8 753// <-
cd9c4f3a 754 Float_t zPump = 385.;
7bd7faf8 755
cd9c4f3a 756 gMC->Gspos("QI32", 1, "QBPM", 0.0, -44.25, zPump, 0, "ONLY");
757 gMC->Gspos("QI33", 1, "QBPM", 0.0, -35.00, zPump,idrotm[2002], "ONLY");
758 gMC->Gspos("QI34", 1, "QBPM", 0.0, -17.90, zPump,idrotm[2002], "ONLY");
759 gMC->Gspos("QI35", 1, "QBPM", 0.0, -24.35, zPump,idrotm[2002], "ONLY");
fe4da5cc 760
7bd7faf8 761 gMC->Gsatt("QBPM", "SEEN", 0);
762 gMC->Gsatt("QBEM", "SEEN", 0);
fe4da5cc 763}
764
cd9c4f3a 765
fe4da5cc 766
767//___________________________________________
768void AliPIPEv0::CreateMaterials()
769{
7bd7faf8 770 //
13391c3e 771 // Define materials for beam pipe
7bd7faf8 772 //
13391c3e 773
9e1a0ddb 774 if(fDebug) printf("%s: Create PIPEv0 materials \n",ClassName());
7bd7faf8 775 Int_t isxfld = gAlice->Field()->Integ();
776 Float_t sxmgmx = gAlice->Field()->Max();
2196bc42 777 // Steel (Inox)
7bd7faf8 778 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
779 Float_t zsteel[4] = { 26.,24.,28.,14. };
780 Float_t wsteel[4] = { .715,.18,.1,.005 };
2196bc42 781 // AlBe - alloy
782 Float_t aAlBe[2] = { 26.98, 9.01};
783 Float_t zAlBe[2] = { 13.00, 4.00};
784 Float_t wAlBe[2] = { 0.4, 0.6};
785
7bd7faf8 786 //
787 // Berillium
788 AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
789 //
790 // Carbon
791 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
792 //
793 // Aluminum
794 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
795 //
796 // Air
797 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
798 //
799 // Vacuum
800 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
801 //
802 // stainless Steel
803 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
804 //
805 // reduced density steel to approximate pump getter material
806 AliMixture(20, "GETTER$", asteel, zsteel, 1.00, 4, wsteel);
2196bc42 807 // Al-Be alloy
808 //
809 AliMixture(21, "AlBe$", aAlBe, zAlBe, 2.07, 2, wAlBe);
7bd7faf8 810 //
811 // ****************
812 // Defines tracking media parameters.
813 //
814 Float_t epsil = .001; // Tracking precision,
815 Float_t stemax = -0.01; // Maximum displacement for multiple scat
816 Float_t tmaxfd = -20.; // Maximum angle due to field deflection
817 Float_t deemax = -.3; // Maximum fractional energy loss, DLS
818 Float_t stmin = -.8;
819 // ***************
820 //
821 // Beryllium
822
823 AliMedium(5, "BE", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
824
825 // Carbon
826 AliMedium(6, "C", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
827 //
828 // Aluminum
829 AliMedium(9, "ALU", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
830 //
831 // Air
832 AliMedium(15, "AIR", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
833 //
834 // Vacuum
835 AliMedium(16, "VACUUM", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
836 //
837 // Steel
838 AliMedium(19, "INOX", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
839 //
840 // Getter
841 AliMedium(20, "GETTER", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
2196bc42 842 //
843 // AlBe - Aloy
844 AliMedium(21, "AlBe" , 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
845
fe4da5cc 846}
847
848
fe4da5cc 849
850
851
852
853
854
855
856