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Forward declarations. Changes due to a new class AliComplexCluster.
[u/mrichter/AliRoot.git] / TPC / AliTPCv3.cxx
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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$Log$
94de3818 18Revision 1.15 2000/07/10 20:57:39 hristov
19Update of TPC code and macros by M.Kowalski
20
37831078 21Revision 1.14 2000/06/30 12:07:50 kowal2
22Updated from the TPC-PreRelease branch
23
73042f01 24Revision 1.13.2.4 2000/06/26 07:39:42 kowal2
25Changes to obey the coding rules
26
27Revision 1.13.2.3 2000/06/25 08:38:41 kowal2
28Splitted from AliTPCtracking
29
30Revision 1.13.2.2 2000/06/16 12:58:13 kowal2
31Changed parameter settings
32
33Revision 1.13.2.1 2000/06/09 07:15:07 kowal2
34
35Defaults loaded automatically (hard-wired)
36Optional parameters can be set via macro called in the constructor
37
38Revision 1.13 2000/05/15 10:00:30 kowal2
39Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova
40
e94dd9ca 41Revision 1.12 2000/04/17 09:37:33 kowal2
42removed obsolete AliTPCDigitsDisplay.C
43
cc80f89e 44Revision 1.11.8.2 2000/04/10 08:36:12 kowal2
45
46Updated readout chambers
47Some modifications to StepManager by M. Kowalski
48
49Revision 1.11.8.1 2000/04/10 07:56:53 kowal2
50Not used anymore - removed
51
52Revision 1.11 1999/11/04 17:28:07 fca
53Correct barrel part of HV Degrader
54
a5371c42 55Revision 1.10 1999/10/14 16:52:08 fca
56Only use PDG codes and not GEANT ones
57
69e40cce 58Revision 1.9 1999/10/08 06:27:23 fca
59Corrected bug in the HV degrader geometry, thanks to G.Tabary
60
d183a600 61Revision 1.8 1999/10/04 13:39:55 fca
62Correct array index problem
63
cdde5b1e 64Revision 1.7 1999/09/29 09:24:34 fca
65Introduction of the Copyright and cvs Log
66
4c039060 67*/
68
73042f01 69//
4b0fdcad 70///////////////////////////////////////////////////////////////////////////////
71// //
72// Time Projection Chamber version 3 -- detailed TPC and slow simulation //
37831078 73//
4b0fdcad 74//Begin_Html
75/*
76<img src="picts/AliTPCv3Class.gif">
77*/
78//End_Html
79// //
80// //
81///////////////////////////////////////////////////////////////////////////////
82
83#include <stdlib.h>
84#include <TMath.h>
4b0fdcad 85#include "AliTPCv3.h"
86#include "AliRun.h"
94de3818 87#include "AliMC.h"
4b0fdcad 88#include "AliConst.h"
cc80f89e 89#include "AliTPCDigitsArray.h"
90#include"AliTPCParam.h"
73042f01 91#include"AliTPCParamSR.h"
69e40cce 92#include "AliPDG.h"
73042f01 93#include <TInterpreter.h>
4b0fdcad 94
95ClassImp(AliTPCv3)
96
97//_____________________________________________________________________________
98AliTPCv3::AliTPCv3(const char *name, const char *title) :
99 AliTPC(name, title)
100{
101 //
cc80f89e 102 // Standard constructor for Time Projection Chamber version 3
4b0fdcad 103 //
104
105 SetBufferSize(128000);
37831078 106 fIdSens=0;
73042f01 107
108 SetGasMixt(2,20,10,-1,0.9,0.1,0.);
109
110 if (fTPCParam)
111 fTPCParam->Write(fTPCParam->GetTitle());
4b0fdcad 112}
113
114//_____________________________________________________________________________
115void AliTPCv3::CreateGeometry()
116{
117 //
cc80f89e 118 // Creation of the TPC coarse geometry (version 3)
37831078 119 // The whole drift volume is sensitive
cc80f89e 120 // Origin Marek Kowalski Cracow
4b0fdcad 121 //
122 //Begin_Html
123 /*
37831078 124 <img src="picts/AliTPCgif">
4b0fdcad 125 */
126 //End_Html
127 //Begin_Html
128 /*
37831078 129 <img src="picts/AliTPCv3Tree.gif">
4b0fdcad 130 */
131 //End_Html
37831078 132 Float_t dm[50];
4b0fdcad 133
37831078 134 Int_t *idtmed = fIdtmed->GetArray(); // TPC media
1283eee5 135
37831078 136 Int_t idrotm[120]; // rotation matrices
1283eee5 137
37831078 138 Int_t nRotMat = 0; // actual number of rotation matrices
1283eee5 139
140
37831078 141 //
142 // Mother volume (Air) - all volumes will be positioned in it
143 //
144
145 dm[0]=0.;
146 dm[1]=360.;
147 dm[2]=12.;
1283eee5 148
37831078 149 //
150
151 dm[3]= -283.7;
152 dm[4]= 66.2;
153 dm[5]= 277.95;
1283eee5 154
37831078 155 //
1283eee5 156
37831078 157 dm[6]= -255.6;
158 dm[7]= 66.2;
159 dm[8]= 277.95;
1283eee5 160
37831078 161 //
1283eee5 162
37831078 163 dm[9]= -73.3;
164 dm[10]= 59.0;
165 dm[11]= 277.95;
1283eee5 166
37831078 167 //
1283eee5 168
37831078 169 dm[12]= -73.3;
170 dm[13]= 56.9;
171 dm[14]= 277.95;
4b0fdcad 172
37831078 173 //
1283eee5 174
37831078 175 dm[15]= -72.1;
176 dm[16]= 56.9;
177 dm[17]= 277.95;
4b0fdcad 178
37831078 179 //
1283eee5 180
37831078 181 dm[18]= -72.1;
182 dm[19]= 60.65;
183 dm[20]= 277.95;
1283eee5 184
37831078 185 //
1283eee5 186
37831078 187 dm[21]= 72.1;
188 dm[22]= 60.65;
189 dm[23]= 277.95;
1283eee5 190
37831078 191 //
1283eee5 192
37831078 193 dm[24]= 72.1;
194 dm[25]= 56.9;
195 dm[26]= 277.95;
1283eee5 196
37831078 197 //
1283eee5 198
37831078 199 dm[27]= 73.3;
200 dm[28]= 56.9;
201 dm[29]= 277.95;
1283eee5 202
37831078 203 //
1283eee5 204
37831078 205 dm[30]= 73.3;
206 dm[31]= 60.65;
207 dm[32]= 277.95;
1283eee5 208
37831078 209 //
1283eee5 210
37831078 211 dm[33]= 250.4;
212 dm[34]= 66.0;
213 dm[35]= 277.95;
1283eee5 214
37831078 215 //
1283eee5 216
37831078 217 dm[36]= 283.7;
218 dm[37]= 66.0;
219 dm[38]= 277.95;
1283eee5 220
1283eee5 221
37831078 222 gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,39);
1283eee5 223
1283eee5 224
37831078 225 //-------------------------------------------------------------------
226 // Tpc Outer INsulator (CO2)
227 //-------------------------------------------------------------------
1283eee5 228
37831078 229 dm[0]= 0.;
230 dm[1]= 360.;
231 dm[2]= 6.;
1283eee5 232
37831078 233 //
234
235 dm[3]= -253.6;
236 dm[4]= 258.;
237 dm[5]= 266.65;
1283eee5 238
37831078 239 //
1283eee5 240
37831078 241 dm[6]= -253.;
242 dm[7]= 258.;
243 dm[8]= 266.65;
1283eee5 244
37831078 245 dm[9]= -253.;
246 dm[10]= 258.;
247 dm[11]= 277.97;
1283eee5 248
37831078 249 dm[12]= 253.6;
250 dm[13]= 258.;
251 dm[14]= 277.97;
1283eee5 252
37831078 253 //
1283eee5 254
37831078 255 dm[15]= 253.6;
256 dm[16]= 265.2;
257 dm[17]= 277.95;
1283eee5 258
37831078 259 //
1283eee5 260
37831078 261 dm[18]= 255.6;
262 dm[19]= 265.2;
263 dm[20]= 277.95;
1283eee5 264
1283eee5 265
37831078 266 gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
cc80f89e 267
37831078 268 //---------------------------------------------------------------
269 // shreds (G10) - TPC Rings
270 //---------------------------------------------------------------
1283eee5 271
37831078 272 gMC->Gsvolu("TPCR","TUBE",idtmed[12],dm,0);
1283eee5 273
37831078 274 dm[0]= 258.;
275 dm[1]= 266.65;
276 dm[2]= 0.3;
1283eee5 277
37831078 278 gMC->Gsposp("TPCR",1,"TOIN",0.,0.,-253.3,0,"ONLY",dm,3); // left bottom
1283eee5 279
37831078 280 //
1283eee5 281
37831078 282 dm[0]= 258.;
283 dm[1]= 270.9;
284 dm[2]= 0.3;
1283eee5 285
37831078 286 gMC->Gsposp("TPCR",2,"TOIN",0.,0.,253.3,0,"ONLY",dm,3); // right
1283eee5 287
37831078 288 //
1283eee5 289
37831078 290 dm[0]= 272.2;
291 dm[1]= 277.95;
292 dm[2]= 0.3;
1283eee5 293
37831078 294 gMC->Gsposp("TPCR",3,"TOIN",0.,0.,-250.7,0,"ONLY",dm,3); // left top
1283eee5 295
37831078 296 //----------------------------------------------------------------
297 // Tpc Outer Contaiment Vessel
298 // mother volume - Al, daughters - composite (sandwich)
299 //----------------------------------------------------------------
300
301 dm[0]= 0.;
302 dm[1]= 360.;
303 dm[2]=5.;
1283eee5 304
37831078 305 //
1283eee5 306
37831078 307 dm[3]= -250.4;
308 dm[4]= 272.2;
309 dm[5]= 277.95;
1283eee5 310
37831078 311 //
1283eee5 312
37831078 313 dm[6]= -248.4;
314 dm[7]= 272.2;
315 dm[8]= 277.95;
1283eee5 316
37831078 317 //
1283eee5 318
37831078 319 dm[9]= 253.6;
320 dm[10]= 272.2;
321 dm[11]= 277.95;
1283eee5 322
37831078 323 //
1283eee5 324
37831078 325 dm[12]= 253.6;
326 dm[13]= 265.2;
327 dm[14]= 277.95;
1283eee5 328
37831078 329 //
330
331 dm[15]= 255.6;
332 dm[16]= 265.2;
333 dm[17]= 277.95;
1283eee5 334
37831078 335 gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,18);
1283eee5 336
37831078 337 // Daughter volumes
338
339 // Tpc SAndwich 1 - Al
1283eee5 340
37831078 341 dm[0]= 274.81;
342 dm[1]= 277.95;
343 dm[2]= 251.7;
1283eee5 344
37831078 345 gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
1283eee5 346
37831078 347 // Tpc SAndwich 2 - Tedlar
1283eee5 348
37831078 349 dm[0] += 5.e-3;
350 dm[1] -= 5.e-3;
351
352 gMC->Gsvolu("TSA2","TUBE",idtmed[9],dm,3);
353
354 // Tpc SAndwich 3 - Kevlar
355
356 dm[0] += 5e-3;
357 dm[1] -= 5.e-3;
358
359 gMC->Gsvolu("TSA3","TUBE",idtmed[5],dm,3);
360
361 // Tpc SAndwich 4 - NOMEX honeycomb
362
363 dm[0] += 0.06;
364 dm[1] -= 0.06;
365
366 gMC->Gsvolu("TSA4","TUBE",idtmed[5],dm,3);
367
368 // 4->3->2->1->TOCV
369
370 gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
371 gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
372 gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
373
374 gMC->Gspos("TSA1",1,"TOCV",0.,0.,2.6,0,"ONLY");
375
376 // TCOV-> TOIN
377
378 gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
379
380 //-------------------------------------------------------
381 // Tpc Outer Field Cage
382 // mother volume - Al, daughters - composite (sandwich)
383 //-------------------------------------------------------
1283eee5 384
37831078 385 dm[0]=0.;
386 dm[1]=360.;
387 dm[2]=6.;
1283eee5 388
37831078 389 dm[3]= -253.;
390 dm[4]= 258.;
391 dm[5]= 277.95;
1283eee5 392
37831078 393 //
394
395 dm[6]= -251.;
396 dm[7]= 258.;
397 dm[8]= 277.95;
1283eee5 398
399 //
37831078 400
401 dm[9]= -251.;
402 dm[10]= 258.;
403 dm[11]= 260.05;
404
1283eee5 405 //
406
37831078 407 dm[12]= 251.;
408 dm[13]= 258.;
409 dm[14]= 260.05;
1283eee5 410
37831078 411 //
1283eee5 412
37831078 413 dm[15]= 251.;
414 dm[16]= 258.;
415 dm[17]= 260.05;
1283eee5 416
37831078 417 //
1283eee5 418
37831078 419 dm[18]= 253.;
420 dm[19]= 258.;
421 dm[20]= 270.9;
422
423 gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
424
425 // Daughter volumes
426
427 // Tpc SAndwich 5 - Al
428
429 dm[0]= 258.;
430 dm[1]= 260.05;
431 dm[2]= 251.7;
432
433 gMC->Gsvolu("TSA5","TUBE",idtmed[4],dm,3);
434
435 // Tpc SAndwich 6 - Tedlar
436
437 dm[0] += 5.e-3;
438 dm[1] -= 5.e-3;
439
440 gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3);
1283eee5 441
37831078 442 // Tpc SAndwich 7 - Kevlar
1283eee5 443
37831078 444 dm[0] += 5.e-3;
445 dm[1] -= 5.e-3;
1283eee5 446
37831078 447 gMC->Gsvolu("TSA7","TUBE",idtmed[5],dm,3);
448
449 // Tpc SAndwich 8 - NOMEX
450
451 dm[0] += 0.02;
452 dm[1] -= 0.02;
453
454 gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3);
455
456 // 8->7->6->5->TOFC
457
458 gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY");
459 gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
460 gMC->Gspos("TSA6",1,"TSA5",0.,0.,0.,0,"ONLY");
461
462 gMC->Gspos("TSA5",1,"TOFC",0.,0.,0.,0,"ONLY");
463
464 // TOFC->TOIN
465
466 gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
467
468 // TOIN->TPC
469
470 gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
471
472 //--------------------------------------------------------------------
473 // Tpc Inner INsulator (CO2)
474 //--------------------------------------------------------------------
475
476
477 dm[0]=0.;
478 dm[1]= 360.;
479 dm[2]= 15.;
1283eee5 480
481 //
37831078 482
483 dm[3]= -255.6;
484 dm[4]= 66.2;
485 dm[5]= 74.8;
486
1283eee5 487 //
488
37831078 489 Float_t tanL = (66.2-59.0)/(255.6-73.3); // tangent of the left cone part
1283eee5 490
37831078 491 dm[6]= -253.6;
492 dm[7]= 59.0+ (253.6-73.3)*tanL;
493 dm[8]= 74.8;
1283eee5 494
37831078 495 //
1283eee5 496
37831078 497 dm[9]= -253.6;
498 dm[10]= dm[7];
499 dm[11]= 79.2;
1283eee5 500
37831078 501 //
1283eee5 502
37831078 503 dm[12]= -73.3;
504 dm[13]= 59.0;
505 dm[14]= 79.2;
1283eee5 506
37831078 507 //
1283eee5 508
37831078 509 dm[15]= -73.3;
510 dm[16]= 56.9;
511 dm[17]= 79.2;
1283eee5 512
37831078 513 //
1283eee5 514
37831078 515 dm[18]= -72.1;
516 dm[19]= 59.6;
517 dm[20]= 79.2;
1283eee5 518
37831078 519 //
1283eee5 520
37831078 521 dm[21]= -72.1;
522 dm[22]= 60.65;
523 dm[23]= 79.2;
1283eee5 524
37831078 525 //
1283eee5 526
37831078 527 dm[24]= 72.1;
528 dm[25]= 60.65;
529 dm[26]= 79.2;
1283eee5 530
37831078 531 //
1283eee5 532
37831078 533 dm[27]= 72.1;
534 dm[28]= 59.6;
535 dm[29]= 79.2;
1283eee5 536
37831078 537 //
1283eee5 538
37831078 539 dm[30]= 73.3;
540 dm[31]= 56.9;
541 dm[32]= 79.2;
1283eee5 542
37831078 543 //
1283eee5 544
37831078 545 dm[33]= 73.3;
546 dm[34]= 59.0;
547 dm[35]= 79.2;
1283eee5 548
37831078 549 //
1283eee5 550
37831078 551 dm[36]= 250.4;
552 dm[37]= 66.0;
553 dm[38]= 79.2;
1283eee5 554
37831078 555 //
4b0fdcad 556
37831078 557 dm[39]= 253.0;
558 dm[40]= 66.0;
559 dm[41]= 79.2;
1283eee5 560
37831078 561 //
1283eee5 562
37831078 563 dm[42]= 253.0;
564 dm[43]= 75.3;
565 dm[44]= 79.2;
1283eee5 566
37831078 567 //
1283eee5 568
37831078 569 dm[45]= 253.6;
570 dm[46]= 75.3;
571 dm[47]= 79.2;
1283eee5 572
37831078 573 gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,48);
1283eee5 574
575
37831078 576 //--------------------------------------------------------------------
577 // Tpc Inner Containment vessel, Left part
578 // mother volume - Al, daughter - composite (sandwich)
579 //--------------------------------------------------------------------
1283eee5 580
37831078 581 dm[0]= 0.;
582 dm[1]= 360.;
583 dm[2]= 8.;
4b0fdcad 584
37831078 585 //
1283eee5 586
37831078 587 dm[3]= -255.6;
588 dm[4]= 66.2;
589 dm[5]= 74.8;
1283eee5 590
37831078 591 //
1283eee5 592
37831078 593 Float_t cosL = 1./TMath::Sqrt(1.+tanL*tanL);
594 Float_t sandThick = 2.14; // cone composite thickness
1283eee5 595
1283eee5 596
597 //
598
37831078 599 dm[6]= -253.6;
600 dm[7]= 59.0 + (253.6-73.3)*tanL;
601 dm[8]= 74.8;
1283eee5 602
37831078 603 //
1283eee5 604
37831078 605 dm[9]= -253.6;
606 dm[10]= dm[7];
607 dm[11]= dm[7]+sandThick/cosL;
1283eee5 608
37831078 609 //
1283eee5 610
37831078 611 dm[12]= -75.6;
612 dm[13]= 59.0+(75.6-73.3)*tanL;
613 dm[14]= dm[13]+sandThick/cosL;
1283eee5 614
37831078 615 //
1283eee5 616
37831078 617 dm[15]= -75.6;
618 dm[16]= dm[13];
619 dm[17]= 60.65;
1283eee5 620
37831078 621 //
1283eee5 622
37831078 623 dm[18]= -73.3;
624 dm[19]= 59.0;
625 dm[20]= 60.65;
1283eee5 626
37831078 627 //
1283eee5 628
37831078 629 dm[21]= -73.3;
630 dm[22]= 56.9;
631 dm[23]= 60.65;
1283eee5 632
37831078 633 //
1283eee5 634
37831078 635 dm[24]= -72.1;
636 dm[25]= 56.9;
637 dm[26]= 60.65;
1283eee5 638
37831078 639 gMC->Gsvolu("TICL","PCON",idtmed[4],dm,27);
1283eee5 640
37831078 641 // Daughter volumes
1283eee5 642
37831078 643 // Tpc SAndwich 9 - Al
1283eee5 644
37831078 645 dm[0]= 0.;
646 dm[1]= 360.;
647 dm[2]= 2.;
1283eee5 648
37831078 649 //
1283eee5 650
37831078 651 dm[3]= - 254.3;
652 dm[4]= 59.0+(254.3-73.3)*tanL;
653 dm[5]= dm[4]+sandThick/cosL;
1283eee5 654
37831078 655 //
1283eee5 656
37831078 657 dm[6]= -78.3;
658 dm[7]= 59.0+(78.3-73.3)*tanL;
659 dm[8]= dm[7]+sandThick/cosL;
1283eee5 660
37831078 661 //
1283eee5 662
37831078 663 gMC->Gsvolu("TSA9","PCON",idtmed[4],dm,9);
1283eee5 664
37831078 665 // Tpc SAndwich 10 - Tedlar
1283eee5 666
37831078 667 dm[4]+= 5.e-3/cosL;
668 dm[5]-= 5.e-3/cosL;
1283eee5 669
37831078 670 //
1283eee5 671
37831078 672 dm[7]+= 5.e-3/cosL;
673 dm[8]+= 5.e-3/cosL;
1283eee5 674
37831078 675 gMC->Gsvolu("TS10","PCON",idtmed[9],dm,9);
1283eee5 676
37831078 677 // Tpc SAndwich 11 - Kevlar
1283eee5 678
37831078 679 dm[4]+= 5.e-3/cosL;
680 dm[5]-= 5.e-3/cosL;
1283eee5 681
37831078 682 //
1283eee5 683
37831078 684 dm[7]+= 5.e-3/cosL;
685 dm[8]+= 5.e-3/cosL;
1283eee5 686
37831078 687 gMC->Gsvolu("TS11","PCON",idtmed[5],dm,9);
1283eee5 688
37831078 689 // Tpc SAndwich 12 - NOMEX
1283eee5 690
37831078 691 dm[4]+= 0.06/cosL;
692 dm[5]-= 0.06/cosL;
1283eee5 693
37831078 694 //
1283eee5 695
37831078 696 dm[7]+= 0.06/cosL;
697 dm[8]+= 0.06/cosL;
1283eee5 698
37831078 699 gMC->Gsvolu("TS12","PCON",idtmed[6],dm,9);
1283eee5 700
37831078 701 // 12->11->10->9
1283eee5 702
37831078 703 gMC->Gspos("TS12",1,"TS11",0.,0.,0.,0,"ONLY");
704 gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
705 gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
1283eee5 706
37831078 707 // TSA9->TICL
1283eee5 708
37831078 709 gMC->Gspos("TSA9",1,"TICL",0.,0.,0.,0,"ONLY");
1283eee5 710
37831078 711 //--------------------------------------------------------------------
712 // Tpc Inner Containment vessel, Right part
713 // mother volume - Al, daughter - composite (sandwich)
714 //--------------------------------------------------------------------
1283eee5 715
37831078 716 dm[0]= 0.;
717 dm[1]= 360.;
718 dm[2]=8.;
1283eee5 719
37831078 720 //
1283eee5 721
37831078 722 dm[3]= 72.1;
723 dm[4]= 56.9;
724 dm[5]= 60.65;
1283eee5 725
37831078 726 //
1283eee5 727
37831078 728 dm[6]= 73.3;
729 dm[7]= 56.9;
730 dm[8]= 60.65;
1283eee5 731
37831078 732 //
1283eee5 733
37831078 734 dm[9]= 73.3;
735 dm[10]= 59.0;
736 dm[11]= 60.65;
1283eee5 737
37831078 738 //
1283eee5 739
37831078 740 Float_t tanR = (66.0-59.0)/(250.5-73.3); // to avoid accuracy problems
741 Float_t cosR = 1./TMath::Sqrt(1.+tanR*tanR); //as above
1283eee5 742
37831078 743 //
1283eee5 744
37831078 745 dm[12]= 75.6;
746 dm[13]= 59.0+(75.6-73.3)*tanR;
747 dm[14]= 60.65;
1283eee5 748
4b0fdcad 749 //
37831078 750
751 dm[15]= 75.6;
752 dm[16]= dm[13];
753 dm[17]= dm[16]+sandThick/cosR;
754
4b0fdcad 755 //
756
37831078 757 dm[18]= 248.4;
758 dm[19]= 59.0+(248.4-73.3)*tanR;
759 dm[20]= dm[19]+sandThick/cosR;
4b0fdcad 760
4b0fdcad 761 //
37831078 762
763 dm[21]= 248.4;
764 dm[22]= dm[19];
765 dm[23]= 70.2;
766
4b0fdcad 767 //
4b0fdcad 768
37831078 769 dm[24]= 250.4;
770 dm[25]= 66.0;
771 dm[26]= 70.2;
772
773 gMC->Gsvolu("TICR","PCON",idtmed[4],dm,27);
774
775
776
777 // Daughter volumes
778
779 // Tpc SAndwich 13 - Al
780
781 dm[0]= 0.;
782 dm[1]= 360.;
783 dm[2]= 2.;
784
4b0fdcad 785 //
37831078 786
787 dm[3]= 78.3;
788 dm[4]= 59.0+(78.3-73.3)*tanR;
789 dm[5]= dm[4]+sandThick/cosR;
790
4b0fdcad 791 //
792
37831078 793 dm[6]= 249.1;
794 dm[7]= 59.0+(249.1-73.3)*tanR;
795 dm[8]= dm[7]+sandThick/cosR;
4b0fdcad 796
797 //
37831078 798
799 gMC->Gsvolu("TS13","PCON",idtmed[4],dm,9);
800
801 // Tpc SAndwich 14 - Tedlar
802
803 dm[4]+= 5.e-3/cosR;
804 dm[5]-= 5.e-3/cosR;
805
4b0fdcad 806 //
4b0fdcad 807
37831078 808 dm[7]+= 5.e-3/cosR;
809 dm[8]+= 5.e-3/cosR;
810
811 gMC->Gsvolu("TS14","PCON",idtmed[9],dm,9);
812
813 // Tpc SAndwich 15 - Kevlar
814
815 dm[4]+= 5.e-3/cosR;
816 dm[5]-= 5.e-3/cosR;
817
4b0fdcad 818 //
37831078 819
820 dm[7]+= 5.e-3/cosR;
821 dm[8]+= 5.e-3/cosR;
822
823 gMC->Gsvolu("TS15","PCON",idtmed[5],dm,9);
824
825 // Tpc SAndwich 16 - NOMEX
826
827 dm[4]+= 0.06/cosR;
828 dm[5]-= 0.06/cosR;
829
4b0fdcad 830 //
37831078 831
832 dm[7]+= 0.06/cosR;
833 dm[8]+= 0.06/cosR;
834
835 gMC->Gsvolu("TS16","PCON",idtmed[6],dm,9);
836
837 // 16->15->14->13
838
839 gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
840 gMC->Gspos("TS15",1,"TS14",0.,0.,0.,0,"ONLY");
841 gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
842
843 // TS12->TICR
844
845 gMC->Gspos("TS13",1,"TICR",0.,0.,0.,0,"ONLY");
846
847 //------------------------------------------------------
848 // Tpc Inner Field Cage
849 // mother volume - Al, daughters - composite (sandwich)
850 //------------------------------------------------------
851
852 dm[0]= 0.;
853 dm[1]= 360.;
854 dm[2]=6.;
855
856 //
857
858 dm[3]= -253.0;
859 dm[4]= 70.7;
860 dm[5]= 79.2;
861
862 //
863
864 dm[6]= -251.0;
865 dm[7]= 70.7;
866 dm[8]= 79.2;
867
868 //
869
870 dm[9]= -251.0;
871 dm[10]= 77.15;
872 dm[11]= 79.2;
873
874 //
875
876 dm[12]= 251.0;
877 dm[13]= 77.15;
878 dm[14]= 79.2;
879
880 //
881
882 dm[15]= 251.0;
883 dm[16]= 66.0;
884 dm[17]= 79.2;
885
886 //
887
888 dm[18]= 253.0;
889 dm[19]= 66.0;
890 dm[20]= 79.2;
891
892 gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,21);
893
894 // Daughter volumes
895
896 // Tpc Sandwich 17 - Al
897
898 dm[0]= 77.15;
899 dm[1]= 79.2;
900 dm[2]= 251.7;
901
902 gMC->Gsvolu("TS17","TUBE",idtmed[4],dm,3);
903
904 // Tpc Sandwich 18 - Tedlar
905
906 dm[0]+= 5.e-3;
907 dm[1]-= 5.e-3;
908
909 gMC->Gsvolu("TS18","TUBE",idtmed[9],dm,3);
910
911 // Tpc Sandwich 19 - Kevlar
912
913 dm[0]+= 5.e-3;
914 dm[1]-= 5.e-3;
915
916 gMC->Gsvolu("TS19","TUBE",idtmed[5],dm,3);
917
918 // Tpc Sandwich 20 - NOMEX
919
920 dm[0]+= 0.06;
921 dm[1]-= 0.06;
922
923 gMC->Gsvolu("TS20","TUBE",idtmed[6],dm,3);
924
925 // 20->19->18->17
926
927 gMC->Gspos("TS20",1,"TS19",0.,0.,0.,0,"ONLY");
928 gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
929 gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
930
931 // TS17->TIFC
932
933 gMC->Gspos("TS17",1,"TIFC",0.,0.,0.,0,"ONLY");
934
935 // TPC Rings
936
937 dm[0]= 70.7;
938 dm[1]= 79.2;
939 dm[2]= 0.3;
940
941 gMC->Gsposp("TPCR",4,"TIIN",0.,0.,-253.3,0,"ONLY",dm,3);
942
943 dm[0]= 66.0;
944 dm[1]= 70.2;
945
946 gMC->Gsposp("TPCR",5,"TIIN",0.,0.,250.7,0,"ONLY",dm,3);
947
948 dm[0]= 75.3;
949 dm[1]= 79.2;
950
951 gMC->Gsposp("TPCR",6,"TIIN",0.,0.,253.3,0,"ONLY",dm,3);
952
953 // TICL->TIIN
954
955 gMC->Gspos("TICL",1,"TIIN",0.,0.,0.,0,"ONLY");
956
957 // TICR->TIIN
958
959 gMC->Gspos("TICR",1,"TIIN",0.,0.,0.,0,"ONLY");
960
961 // TIFC->TIIN
962
963 gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
964
965 // Tpc Sandwich 21 - Al (central barrel)
966
967 dm[0]= 77.15;
968 dm[1]= 79.2;
969 dm[2]= 75.2;
970
971 gMC->Gsvolu("TS21","TUBE",idtmed[4],dm,3);
972
973 // Tpc Sandwich 22 - Tedlar (central barrel)
974
975 dm[0]+= 5.e-3;
976 dm[1]-= 5.e-3;
977
978 gMC->Gsvolu("TS22","TUBE",idtmed[9],dm,3);
979
980 // Tpc Sandwich 23 - Kevlar (central barrel)
981
982 dm[0]+= 5.e-3;
983 dm[1]-= 5.e-3;
984
985 gMC->Gsvolu("TS23","TUBE",idtmed[5],dm,3);
986
987 // Tpc Sandwich 24 - NOMEX (central barrel)
988
989 dm[0]+= 0.02;
990 dm[1]-= 0.02;
991
992 gMC->Gsvolu("TS24","TUBE",idtmed[6],dm,3);
993
994 // 24->23->22->21
995
996 gMC->Gspos("TS24",1,"TS23",0.,0.,0.,0,"ONLY");
997 gMC->Gspos("TS23",1,"TS22",0.,0.,0.,0,"ONLY");
998 gMC->Gspos("TS22",1,"TS21",0.,0.,0.,0,"ONLY");
999
1000 gMC->Gspos("TS21",1,"TIIN",0.,0.,0.,0,"ONLY");
1001
1002 // put everything into the TPC
1003
1004 gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
1005
1006
1007 //---------------------------------------------------------
1008 // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
1009 // and its daughters (HV membrane, rods, readout chambers)
1010 //---------------------------------------------------------
1011
1012 dm[0]= 79.2;
1013 dm[1]= 258.0;
1014 dm[2]= 253.6;
1015
1016 gMC->Gsvolu("TDGS","TUBE",idtmed[2],dm,3);
1017
1018 // sector opening angles
1019
1020 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
1021
1022 // sector angle shift
1023
1024 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
1025
1026 // number of sectors
1027
1028 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
1029 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
1030
1031 // All above parameters are identical for inner and outer
1032 // sectors. The distinction is kept for the historical reasons
1033 // and eventually will disappear.
1034
1035 Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
1036 Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
1037 Float_t space;
1038
1039 //-------------------------------------------------------------------------
1040 // Tpc Inner Readout Chambers
1041 //-------------------------------------------------------------------------
1042
1043 dm[0]= 14.483;
1044 dm[1]= 23.3345;
1045 dm[2]= 1.6; // thickness
1046 dm[3]= 25.1;
1047
1048 gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
1049
1050 // this volume will be positioned in the empty space
1051 // of the end-cap to avoid overlaps
1052
1053 dm[0]= 13.7305;
1054 dm[1]= 21.1895;
1055 dm[2]= 2.25;
1056 dm[3]= 21.15;
1057
1058 gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
1059
1060
1061 //------------------------------------------------
1062 // Tpc Inner readout chamber Pad Plane
1063 //------------------------------------------------
1064
1065 dm[0]= 14.483;
1066 dm[1]= 23.3345;
1067 dm[2]= 0.5;
1068 dm[3]= 25.1;
1069
1070 gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
1071
1072 //
1073
1074 dm[0] -= 1.218511934;
1075 dm[1] -= 1.218511934;
1076 dm[2] = 0.35;
1077
1078 gMC->Gsvolu("TIC3","TRD1",idtmed[2],dm,4);
1079
1080 gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
1081
1082 gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
1083
1084
1085 //----------------------------------------------
1086 // Tpc Readout Chambers Empty spaces - for both
1087 // inner and outer sectors
1088 //----------------------------------------------
1089
1090 gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
1091
1092 // Inner sector - 4 spaces
1093
1094
1095 dm[3] = 4.7625;
1096 dm[0] = 12.472;
1097
1098 Float_t rr = 90.52;
1099 Float_t zz;
1100
1101 zz= -12.7875;
1102
1103 space = rr*tanAlpha-dm[0];
1104
1105 for(Int_t nsLow=0;nsLow<4;nsLow++){
1106
1107 rr += 9.525;
1108 dm[1]= rr*tanAlpha - space;
1109
1110 dm[2]=0.8;
1111
1112 gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
1113
1114 //
1115
1116 dm[2]= 1.2;
1117
1118 gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
1119
1120 rr += 0.4;
1121 dm[0] = rr*tanAlpha - space;
1122 zz += (0.4+9.525);
1123
1124 }
1125
1126 dm[0]= 12.472;
1127 // dm[1] - this is the dm[1] from the previous TRCE
1128 dm[2]= 1.05;
1129 dm[3]= 19.65;
1130
1131 gMC->Gsposp("TRCE",9,"TIC1",0.,-1.,0.,0,"ONLY",dm,4);
1132
1133 //
1134 // TPc Space for Connectors
1135 //
1136
1137 dm[0]= .3;
1138 dm[1]= .3;
1139 dm[2]= 4.5;
1140
1141 gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
1142
1143 // TPC Connectors
1144
1145 dm[0]= .25;
1146 dm[1]= .15;
1147 dm[2]= 3.75;
1148
1149 gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
1150
1151 gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
1152
1153 zz = -12.7875;
1154
1155
1156 Float_t alpha;
1157 Float_t astep;
1158
1159 Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
1160
1161 // inner part of the inner sector - 2 x 20 holes
1162
1163 astep = 20.00096874/19.;
1164
1165 alpha = 10.00048437-astep;
1166
1167 Float_t x1,x2;
1168
1169 x1 = 13.31175725;
1170 x1 -= 0.996357832;
1171
1172 x2 = 15.06180253;
1173 x2 -= 1.163028812;
1174
1175 Int_t ncon;
1176
1177 for(ncon=0;ncon<20;ncon++){
1178
1179 phi1 = 0.;
1180 theta1 = 90.+alpha;
1181 phi2=90.;
1182 theta2 = 90.;
1183 phi3 = (alpha>0) ? 0. : 180.;
1184 theta3 = TMath::Abs(alpha);
1185
1186 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1187
1188
1189
1190 gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1191 gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1192
1193
1194 x1 -= 1.296357833;
1195 x2 -= 1.463028812;
1196
1197 alpha -= astep;
1198 nRotMat++;
1199
1200 }
1201
1202 // outer part of the inner sector - 2 x 25 holes
1203
1204 astep = 20.00096874/24.;
1205 alpha = 10.00048437-astep;
1206
1207 x1 = 16.81184781;
1208 x1 -= 1.016295986;
1209
1210 x2 = 18.5618931;
1211 x2 -= 1.150914854;
1212
1213 for(ncon=0;ncon<25;ncon++){
1214
1215 phi1 = 0.;
1216 theta1 = 90.+alpha;
1217 phi2=90.;
1218 theta2 = 90.;
1219 phi3 = (alpha>0) ? 0. : 180.;
1220 theta3 = TMath::Abs(alpha);
1221
1222 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1223
1224
1225
1226 gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1227 gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1228
1229
1230 x1 -= 1.316295986;
1231 x2 -= 1.450914854;
1232
1233 alpha -= astep;
1234 nRotMat++;
1235
1236 }
1237
1238 //--------------------------------------------------------------------------
1239 // TPC Outer Readout Chambers
1240 // this is NOT a final design
1241 //--------------------------------------------------------------------------
1242
1243 dm[0]= 23.3875;
1244 dm[1]= 43.524;
1245 dm[2]= 1.5; //thickness
1246 dm[3]= 57.1;
1247
1248 gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1249
1250 //------------------------------------------------
1251 // Tpc Outerr readout chamber Pad Plane
1252 //------------------------------------------------
1253
1254 dm[2]= 0.5;
1255
1256 gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1257
1258 dm[0] -= 1.218511934;
1259 dm[1] -= 1.218511934;
1260 dm[2] = 0.35;
1261
1262 gMC->Gsvolu("TOC3","TRD1",idtmed[2],dm,4);
1263
1264 gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1265
1266 gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1267
1268 // empty space
1269
1270
1271 dm[0]= 21.035;
1272 dm[1]= 38.7205;
1273 dm[2]= 0.7;
1274 dm[3]= 50.15;
1275
1276 gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1277
1278 dm[0]= 22.2935;
1279 dm[1]= 40.5085;
1280 dm[2]= 2.25;
1281 dm[3]= 51.65;
1282
1283 gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1284
1285
1286 dm[0]= 21.35;
1287 dm[1]= 38.7205;
1288 dm[2]= 2.25;
1289 dm[3]= 50.15;
1290
1291 gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1292
1293
1294 //-----------------------------------------------
1295 // Tpc Services Support Wheel
1296 //-----------------------------------------------
1297
1298 dm[0]=0.;
1299 dm[1]=360.;
1300 dm[2]=18.;
1301 dm[3]=2.;
1302
1303 dm[4]= -5.;
1304 dm[5]= 77.017;
1305 dm[6]= 255.267;
1306
1307 dm[7]= 5.;
1308 dm[8]= dm[5];
1309 dm[9]= dm[6];
1310
1311 gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1312
1313 // Tpc Services Wheel Cover
1314
1315 dm[4]= -0.5;
1316 dm[7]= 0.5;
1317
1318 gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1319
1320 // Tpc Service wheel Cover Empty space
1321
1322 dm[0]= 10.99;
1323 dm[1]= 39.599;
1324 dm[2]= .5;
1325 dm[3]= 81.125;
1326
1327 gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1328
1329 // Tpc services Wheel Empty Spaces
1330
1331 dm[0]= 13.18017507;
1332 dm[1]= 44.61045938;
1333 dm[2]= 4.;
1334 dm[3]= 89.125;
1335
1336 gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1337
1338 // Tpc Services Wheel Bars
1339
1340 gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1341
1342 // bars-> TWES
1343
1344 dm[2]= 4.;
1345 dm[3]= .4;
1346
1347 dm[0]= 13.8149522;
1348 dm[1]= 13.95601379;
1349
1350 gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1351
1352 dm[0]= 43.83462067;
1353 dm[1]= 43.97568225;
1354
1355 gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1356
1357 // TPc ELectronics - right now 30% X0 Si
1358
1359 dm[0]= 14.03813696;
1360 dm[1]= 43.3524075;
1361 dm[2]= 1.404;
1362 dm[3]= 83.125;
1363
1364 gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1365 gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1366
1367
1368 //--------------------------------------------------------------------------
1369 // End caps
1370 //--------------------------------------------------------------------------
1371
1372 // TPc Main Wheel - Al
1373
1374 dm[0]= 75.3;
1375 dm[1]= 264.8;
1376 dm[2]= 3.0;
1377
1378 gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1379
1380 // TPc Extra Wheel (to avoid overlapping) - Al
1381
1382 dm[0]= 264.8;
1383 dm[1]= 277.0;
1384 dm[2]= 1.95;
1385
1386 gMC->Gsvolu("TPEW","TUBE",idtmed[4],dm,3);
1387
1388 //--------------------------------------------------------------------------
1389 // Tpc Empty Space for the Readout chambers
1390 //--------------------------------------------------------------------------
1391
1392 Float_t rLow= 86.2;
1393 Float_t rUp= 243.5;
1394 Float_t dR = 0.5*(rUp-rLow);
1395
1396 space= 1.4/cosAlpha; // wheel ribs are 2.8 cm wide
1397
1398 dm[0]= rLow*tanAlpha-space;
1399 dm[1]= rUp*tanAlpha-space;
1400 dm[2]= 3.0;
1401 dm[3]= dR;
1402
1403 gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1404
1405 // TIC1->TESR
1406
1407
1408 gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1409
1410
1411 // TOC1->TESR
1412
1413 gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1414
1415 // Tpc Empty Space Bars - Al (daughters of TESR)
1416
1417 Float_t zBar;
1418
1419 gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1420
1421 // lower bar
1422
1423 dm[0]= rLow*tanAlpha-space;
1424 dm[1]= 88.7*tanAlpha-space;
1425 dm[2]= 0.95;
1426 dm[3]= 1.275;
1427
1428 zBar = -dR+dm[3];
1429
1430 gMC->Gsposp("TESB",1,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1431
1432 // middle bar
1433
1434 dm[0]= 131.65*tanAlpha-space;
1435 dm[1]= 136.5*tanAlpha-space;
1436 dm[3]= 2.425;
1437
1438 zBar = -dR +131.65+dm[3]-rLow;
1439
1440 gMC->Gsposp("TESB",2,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1441
1442 // upper bar
1443
1444 dm[0]= 240.4*tanAlpha-space;
1445 dm[1]= rUp*tanAlpha-space;
1446 dm[3]= 1.55;
1447
1448 zBar = dR-dm[3];
1449
1450 gMC->Gsposp("TESB",3,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1451
1452 // positioning of the empty spaces into the main wheel
1453
1454 Float_t rCenter,xc,yc;
1455 Float_t rInner,rOuter; // center of the inner and outer chamber
1456
1457 rCenter = rLow+dR;
1458
1459 rInner = 108.07;
1460 rOuter = 190.68;
1461
1462 for(Int_t ns=0; ns<nInnerSector;ns++){
1463
1464 phi1 = ns * innerOpenAngle + innerAngleShift;
1465 phi1 *= kRaddeg; // in degrees
1466
1467 phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1468
1469 if (phi1 > 360.) phi1 -= 360.;
1470
1471 theta1 = 90.;
1472 phi2 = 90.;
1473 theta2 = 180.;
1474 phi3 = ns * innerOpenAngle + innerAngleShift;
1475 phi3 *= kRaddeg; // in degrees
1476
1477 phi3 = (Float_t)TMath::Nint(phi3);
1478
1479 if(phi3 > 360.) phi3 -= 360.;
1480
1481 theta3 = 90.;
1482
1483 // "holes"->End plate
1484
1485 xc = rCenter*TMath::Cos(phi3*kDegrad);
1486 yc = rCenter*TMath::Sin(phi3*kDegrad);
1487
1488 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1489
1490 gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1491
1492 // TSCE->TSWC (services wheel volumes)
1493
1494 xc = 166.142*TMath::Cos(phi3*kDegrad);
1495 yc = 166.142*TMath::Sin(phi3*kDegrad);
1496
1497 gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1498 gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1499
1500
1501 // readout chambers->TDGS (drift gas)
1502
1503 xc = rInner*TMath::Cos(phi3*kDegrad);
1504 yc = rInner*TMath::Sin(phi3*kDegrad);
1505
1506 gMC->Gspos("TIRC",ns+1,"TDGS",xc,yc,252.,idrotm[nRotMat],"ONLY");
1507
1508 xc = rOuter*TMath::Cos(phi3*kDegrad);
1509 yc = rOuter*TMath::Sin(phi3*kDegrad);
1510
1511 gMC->Gspos("TORC",ns+1,"TDGS",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1512
1513 nRotMat++;
1514
1515 theta2 = 0.; // reflection
1516
1517 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1518
1519 xc = rInner*TMath::Cos(phi3*kDegrad);
1520 yc = rInner*TMath::Sin(phi3*kDegrad);
1521
1522 gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGS",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1523
1524 xc = rOuter*TMath::Cos(phi3*kDegrad);
1525 yc = rOuter*TMath::Sin(phi3*kDegrad);
1526
1527 gMC->Gspos("TORC",ns+nOuterSector+1,"TDGS",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1528
1529 nRotMat++;
1530
1531
1532 }
1533
1534
1535 // reflection matrix
1536
1537 theta1 = 90.;
1538 phi1 = 0.;
1539 theta2 = 90.;
1540 phi2 = 270.;
1541 theta3 = 180.;
1542 phi3 = 0.;
1543
1544 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1545
1546
1547 // TPMW->TPC
1548
1549 gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1550 gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[nRotMat],"ONLY");
1551 gMC->Gspos("TPEW",1,"TPC ",0.,0.,257.65,0,"ONLY");
1552 gMC->Gspos("TPEW",2,"TPC ",0.,0.,-257.65,0,"ONLY");
1553
1554
1555
1556 //-------------------------------------------------------
1557 // Tpc High Voltage Membrane - NOMEX honeycomb
1558 //-------------------------------------------------------
1559
1560 dm[0]=0.,
1561 dm[1]=360.;
1562 dm[2]=18.;
1563 dm[3]=2.;
1564
1565 //
1566
1567 dm[4]= -0.3;
1568 dm[5]= 81.156;
1569 dm[6]= 253.386;
1570
1571 //
1572
1573 dm[7]= 0.3;
1574 dm[8]= dm[5];
1575 dm[9]= dm[6];
1576
1577 gMC->Gsvolu("THVM","PGON",idtmed[6],dm,10);
1578
1579 gMC->Gspos("THVM",1,"TDGS",0.,0.,0.,0,"ONLY");
1580
1581 //----------------------------------------------------------
1582 // TPc Support Rods - MAKROLON
1583 //----------------------------------------------------------
1584
1585 dm[0]= 0.9;
1586 dm[1]= 1.2;
1587 dm[2]= 126.65;
1588
1589 gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,3);
1590
1591 for(Int_t nrod=1;nrod<18;nrod++){
1592 Float_t angle=innerOpenAngle*(Float_t)nrod;
1593
1594 xc=82.4*TMath::Cos(angle);
1595 yc=82.4*TMath::Sin(angle);
1596
1597 gMC->Gspos("TPSR",nrod,"TDGS",xc,yc,126.95,0,"ONLY");
1598 gMC->Gspos("TPSR",nrod+17,"TDGS",xc,yc,-126.95,0,"ONLY");
1599
1600 xc=254.2*TMath::Cos(angle);
1601 yc=254.2*TMath::Sin(angle);
1602
1603 gMC->Gspos("TPSR",nrod+34,"TDGS",xc,yc,126.95,0,"ONLY");
1604 gMC->Gspos("TPSR",nrod+51,"TDGS",xc,yc,-126.95,0,"ONLY");
1605
1606 }
1607
1608 //----------------------------------------------------------
1609 // Tpc High Voltage rod - MAKROLON + Copper cable
1610 //----------------------------------------------------------
1611
1612 // rod with cable (Left)
1613
1614 dm[0]=0.;
1615 dm[1]=2.25;
1616 dm[2]=126.65;
1617
1618 gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1619
1620 // HV cable
1621
1622 dm[0]=0.;
1623 dm[1]=0.3;
1624 dm[2]=126.65;
1625
1626 gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
1627
1628 // empty space
1629
1630 dm[0]=0.3;
1631 dm[1]=1.;
1632 dm[2]=126.65;
1633
1634 gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1635
1636 gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1637 gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1638
1639 // rod without cable
1640
1641 dm[0]=1.8;
1642 dm[1]=2.25;
1643 dm[2]=126.65;
1644
1645 gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1646
1647
1648
1649 gMC->Gspos("THVL",1,"TDGS",82.4,0.,-126.95,0,"ONLY");
1650 gMC->Gspos("THVL",2,"TDGS",254.2,0.,-126.95,0,"ONLY");
1651
1652 gMC->Gspos("THVR",1,"TDGS",82.4,0.,126.95,0,"ONLY");
1653 gMC->Gspos("THVR",2,"TDGS",254.2,0.,126.95,0,"ONLY");
1654
1655
1656
1657 gMC->Gspos("TDGS",1,"TPC ",0.,0.,0.,0,"ONLY");
1658
1659 // services wheel cover -> wheel
1660
1661
1662 gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1663 gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1664
1665
1666 // put the wheel into the TPC
1667
1668 gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1669 gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1670
1671 gMC->Gsord("TPMW",6);
1672 gMC->Gsord("TSSW",6);
1673 gMC->Gsord("TSWC",6);
1674
1675 // put the TPC into ALIC (main mother volume)
1676
1677 gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY");
1678
1679
1680} // end of function
1681
1682
1683
1684//_____________________________________________________________________________
1685void AliTPCv3::DrawDetector()
1686{
1687 //
1688 // Draw a shaded view of the Time Projection Chamber version 1
1689 //
1690
1691
1692 // Set everything unseen
1693 gMC->Gsatt("*", "seen", -1);
1694 //
1695 // Set ALIC mother transparent
1696 gMC->Gsatt("ALIC","SEEN",0);
1697 //
1698 // Set the volumes visible
1699 //
1700
1701 gMC->Gsatt("TPC ","SEEN",0);
1702 gMC->Gsatt("TOIN","SEEN",1);
1703 gMC->Gsatt("TOIN","COLO",7);
1704 gMC->Gsatt("TPCR","SEEN",0);
1705 gMC->Gsatt("TOCV","SEEN",1);
1706 gMC->Gsatt("TOCV","COLO",4);
1707 gMC->Gsatt("TSA1","SEEN",0);
1708 gMC->Gsatt("TSA2","SEEN",0);
1709 gMC->Gsatt("TSA3","SEEN",0);
1710 gMC->Gsatt("TSA4","SEEN",0);
1711 gMC->Gsatt("TOFC","SEEN",1);
1712 gMC->Gsatt("TOFC","COLO",4);
1713 gMC->Gsatt("TSA5","SEEN",0);
1714 gMC->Gsatt("TSA6","SEEN",0);
1715 gMC->Gsatt("TSA7","SEEN",0);
1716 gMC->Gsatt("TSA8","SEEN",0);
1717 gMC->Gsatt("TIIN","COLO",7);
1718 gMC->Gsatt("TIIN","SEEN",1);
1719 gMC->Gsatt("TICL","SEEN",0);
1720 gMC->Gsatt("TSA9","SEEN",0);
1721 gMC->Gsatt("TS10","SEEN",0);
1722 gMC->Gsatt("TS11","SEEN",0);
1723 gMC->Gsatt("TS12","SEEN",0);
1724 gMC->Gsatt("TICR","SEEN",0);
1725 gMC->Gsatt("TS13","SEEN",0);
1726 gMC->Gsatt("TS14","SEEN",0);
1727 gMC->Gsatt("TS15","SEEN",0);
1728 gMC->Gsatt("TS16","SEEN",0);
1729 gMC->Gsatt("TIFC","SEEN",1);
1730 gMC->Gsatt("TIFC","COLO",4);
1731 gMC->Gsatt("TS17","SEEN",0);
1732 gMC->Gsatt("TS18","SEEN",0);
1733 gMC->Gsatt("TS19","SEEN",0);
1734 gMC->Gsatt("TS20","SEEN",0);
1735 gMC->Gsatt("TS21","SEEN",0);
1736 gMC->Gsatt("TS22","SEEN",0);
1737 gMC->Gsatt("TS23","SEEN",0);
1738 gMC->Gsatt("TS24","SEEN",0);
1739 gMC->Gsatt("TDGS","SEEN",0);
1740 gMC->Gsatt("TIRC","SEEN",0);
1741 gMC->Gsatt("TIC1","SEEN",1);
1742 gMC->Gsatt("TIPP","SEEN",0);
1743 gMC->Gsatt("TIC3","SEEN",0);
1744 gMC->Gsatt("TRCE","SEEN",0);
1745 gMC->Gsatt("TPSC","SEEN",0);
1746 gMC->Gsatt("TPCC","SEEN",0);
1747 gMC->Gsatt("TORC","SEEN",0);
1748 gMC->Gsatt("TOPP","SEEN",0);
1749 gMC->Gsatt("TOC3","SEEN",0);
1750 gMC->Gsatt("TOC1","SEEN",1);
1751 gMC->Gsatt("TSSW","SEEN",1);
1752 gMC->Gsatt("TSWC","SEEN",1);
1753 gMC->Gsatt("TSCE","SEEN",1);
1754 gMC->Gsatt("TSSW","COLO",3);
1755 gMC->Gsatt("TSWC","COLO",3);
1756 gMC->Gsatt("TSCE","COLO",6);
1757 gMC->Gsatt("TWES","SEEN",0);
1758 gMC->Gsatt("TSWB","SEEN",0);
1759 gMC->Gsatt("TPEL","SEEN",0);
1760 gMC->Gsatt("TPMW","SEEN",1);
1761 gMC->Gsatt("TPEW","SEEN",1);
1762 gMC->Gsatt("TESR","SEEN",1);
1763 gMC->Gsatt("TPMW","COLO",12);
1764 gMC->Gsatt("TPEW","COLO",12);
1765 gMC->Gsatt("TWES","COLO",5);
1766 gMC->Gsatt("TIC1","COLO",5);
1767 gMC->Gsatt("TOC1","COLO",5);
1768 gMC->Gsatt("TESB","SEEN",0);
1769 gMC->Gsatt("TPLS","SEEN",0);
1770 gMC->Gsatt("TPUS","SEEN",0);
1771 gMC->Gsatt("TPSS","SEEN",0);
1772 gMC->Gsatt("THVM","SEEN",1);
1773 gMC->Gsatt("THVM","COLO",11);
1774 gMC->Gsatt("TPSR","SEEN",0);
1775 gMC->Gsatt("THVL","SEEN",0);
1776 gMC->Gsatt("THVC","SEEN",0);
1777 gMC->Gsatt("THVE","SEEN",0);
1778 gMC->Gsatt("THVR","SEEN",0);
1779
1780 //
1781 gMC->Gdopt("hide", "on");
1782 gMC->Gdopt("shad", "on");
1783 gMC->Gsatt("*", "fill", 7);
1784 gMC->SetClipBox(".");
1785 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1786 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1787 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1788 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1789 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1790 gMC->DefaultRange();
1791 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1792 gMC->Gdhead(1111, "Time Projection Chamber");
1793 gMC->Gdman(18, 4, "MAN");
1794 gMC->Gdopt("hide","off");
1795}
1796
1797//_____________________________________________________________________________
1798void AliTPCv3::CreateMaterials()
1799{
1800 //
1801 // Define materials for version 2 of the Time Projection Chamber
1802 //
1803
1804
1805 //
1806 AliTPC::CreateMaterials();
1807}
1808
1809//_____________________________________________________________________________
1810void AliTPCv3::Init()
1811{
1812 //
1813 // Initialises version 3 of the TPC after that it has been built
1814 //
1815 Int_t *idtmed = fIdtmed->GetArray();
4b0fdcad 1816
1817 AliTPC::Init();
1818
37831078 1819 fIdSens=gMC->VolId("TDGS"); // drift gas as a sensitive volume
4b0fdcad 1820
1821 gMC->SetMaxNStep(30000); // max. number of steps increased
1822
37831078 1823 gMC->Gstpar(idtmed[2],"LOSS",5);
4b0fdcad 1824
1825 printf("*** TPC version 3 initialized ***\n");
1826 printf("Maximum number of steps = %d\n",gMC->GetMaxNStep());
1827
1828 //
1829
1830}
1831
1832//_____________________________________________________________________________
1833void AliTPCv3::StepManager()
1834{
1835 //
1836 // Called for every step in the Time Projection Chamber
1837 //
1838
1839 //
1840 // parameters used for the energy loss calculations
1841 //
73042f01 1842 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1843 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1844 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
4b0fdcad 1845
1846
73042f01 1847 const Float_t kbig = 1.e10;
4b0fdcad 1848
1849 Int_t id,copy;
1850 TLorentzVector pos;
1851 Float_t hits[4];
1852 Int_t vol[2];
1853 TClonesArray &lhits = *fHits;
1854
1855 vol[1]=0;
1856 vol[0]=0;
1857
1858 //
1859
73042f01 1860 gMC->SetMaxStep(kbig);
4b0fdcad 1861
1862 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1863
1864 Float_t charge = gMC->TrackCharge();
1865
1866 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1867
1868
1869 id=gMC->CurrentVolID(copy);
1870
1871 // Check the sensitive volume
1872
37831078 1873 if (id != fIdSens) return;
4b0fdcad 1874
1875 //
1876 // charged particle is in the sensitive volume
1877 //
1878
1879 if(gMC->TrackStep() > 0) {
1880
1881
73042f01 1882 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
4b0fdcad 1883 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1884
1885 gMC->TrackPosition(pos);
1886 hits[0]=pos[0];
1887 hits[1]=pos[1];
1888 hits[2]=pos[2];
1889
1890 //
1891 // check the selected side of the TPC
1892 //
1893
1894 if(fSide && fSide*hits[2]<=0.) return;
1895
1896 hits[3]=(Float_t)nel;
1897
1898 // Add this hit
1899
1900 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1901
1902 }
1903
1904 // Stemax calculation for the next step
1905
1906 Float_t pp;
1907 TLorentzVector mom;
1908 gMC->TrackMomentum(mom);
1909 Float_t ptot=mom.Rho();
73042f01 1910 Float_t betaGamma = ptot/gMC->TrackMass();
4b0fdcad 1911
69e40cce 1912 Int_t pid=gMC->TrackPid();
cc80f89e 1913 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
4b0fdcad 1914 {
73042f01 1915 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
4b0fdcad 1916 }
1917 else
1918 {
73042f01 1919 pp=kprim*BetheBloch(betaGamma);
4b0fdcad 1920 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1921 }
1922
1923 Float_t random[1];
1924 gMC->Rndm(random,1); // good, old GRNDM from Geant3
1925
1926 Double_t rnd = (Double_t)random[0];
1927
1928 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1929
1930}
1931
1932//_____________________________________________________________________________
1933Float_t AliTPCv3::BetheBloch(Float_t bg)
1934{
1935 //
1936 // Bethe-Bloch energy loss formula
1937 //
73042f01 1938 const Double_t kp1=0.76176e-1;
1939 const Double_t kp2=10.632;
1940 const Double_t kp3=0.13279e-4;
1941 const Double_t kp4=1.8631;
1942 const Double_t kp5=1.9479;
4b0fdcad 1943
1944 Double_t dbg = (Double_t) bg;
1945
1946 Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
1947
73042f01 1948 Double_t aa = TMath::Power(beta,kp4);
1949 Double_t bb = TMath::Power(1./dbg,kp5);
4b0fdcad 1950
73042f01 1951 bb=TMath::Log(kp3+bb);
4b0fdcad 1952
73042f01 1953 return ((Float_t)((kp2-aa-bb)*kp1/aa));
4b0fdcad 1954}