Mother volume corrected to avoid overlaps with the ITS
[u/mrichter/AliRoot.git] / TPC / AliTPCv3.cxx
CommitLineData
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
88cb7938 16/* $Id$ */
4c039060 17
73042f01 18//
4b0fdcad 19///////////////////////////////////////////////////////////////////////////////
20// //
21// Time Projection Chamber version 3 -- detailed TPC and slow simulation //
37831078 22//
4b0fdcad 23//Begin_Html
24/*
25<img src="picts/AliTPCv3Class.gif">
26*/
27//End_Html
28// //
29// //
30///////////////////////////////////////////////////////////////////////////////
31
32#include <stdlib.h>
116cbefd 33
116cbefd 34#include <TInterpreter.h>
88cb7938 35#include <TLorentzVector.h>
4b0fdcad 36#include <TMath.h>
88cb7938 37#include <TVirtualMC.h>
38#include <TPDGCode.h>
116cbefd 39
4b0fdcad 40#include "AliConst.h"
116cbefd 41#include "AliRun.h"
cc80f89e 42#include "AliTPCDigitsArray.h"
4c475d27 43#include "AliTPCParam.h"
44#include "AliTPCParamSR.h"
4ed5dced 45#include "AliTPCTrackHitsV2.h"
116cbefd 46#include "AliTPCv3.h"
5d12ce38 47#include "AliMC.h"
4b0fdcad 48
49ClassImp(AliTPCv3)
79575d04 50//_____________________________________________________________________________
51
52 AliTPCv3::AliTPCv3(){
53
54 fHitType = 1;
55
56}
57
4b0fdcad 58//_____________________________________________________________________________
59AliTPCv3::AliTPCv3(const char *name, const char *title) :
60 AliTPC(name, title)
61{
62 //
cc80f89e 63 // Standard constructor for Time Projection Chamber version 3
4b0fdcad 64 //
65
66 SetBufferSize(128000);
37831078 67 fIdSens=0;
73042f01 68
69 SetGasMixt(2,20,10,-1,0.9,0.1,0.);
70
71 if (fTPCParam)
72 fTPCParam->Write(fTPCParam->GetTitle());
79575d04 73
74 fHitType =1;
4b0fdcad 75}
76
77//_____________________________________________________________________________
78void AliTPCv3::CreateGeometry()
79{
80 //
cc80f89e 81 // Creation of the TPC coarse geometry (version 3)
37831078 82 // The whole drift volume is sensitive
cc80f89e 83 // Origin Marek Kowalski Cracow
4b0fdcad 84 //
85 //Begin_Html
86 /*
37831078 87 <img src="picts/AliTPCgif">
4b0fdcad 88 */
89 //End_Html
90 //Begin_Html
91 /*
37831078 92 <img src="picts/AliTPCv3Tree.gif">
4b0fdcad 93 */
94 //End_Html
37831078 95 Float_t dm[50];
4b0fdcad 96
37831078 97 Int_t *idtmed = fIdtmed->GetArray(); // TPC media
1283eee5 98
37831078 99 Int_t idrotm[120]; // rotation matrices
1283eee5 100
37831078 101 Int_t nRotMat = 0; // actual number of rotation matrices
1283eee5 102
103
37831078 104 //
105 // Mother volume (Air) - all volumes will be positioned in it
106 //
107
108 dm[0]=0.;
109 dm[1]=360.;
79575d04 110 dm[2]=8.;
4b0fdcad 111
37831078 112 //
1283eee5 113
79575d04 114 dm[3]=-283.7;
2a1efbbd 115 dm[4]=77.017;
79575d04 116 dm[5]=278.;
4b0fdcad 117
37831078 118 //
1283eee5 119
79575d04 120 dm[6]=-253.6;
121 dm[7]=65.6;
122 dm[8]=278.;
1283eee5 123
37831078 124 //
1283eee5 125
79575d04 126 dm[9]=-73.3;
127 dm[10]=60.9;
128 dm[11]=278.;
1283eee5 129
37831078 130 //
1283eee5 131
79575d04 132 dm[12]=-73.3;
133 dm[13]=56.9;
134 dm[14]=278.;
1283eee5 135
37831078 136 //
1283eee5 137
79575d04 138 dm[15]=73.3;
139 dm[16]=56.9;
140 dm[17]=278.;
1283eee5 141
37831078 142 //
1283eee5 143
79575d04 144 dm[18]=73.3;
145 dm[19]=60.9;
146 dm[20]=278.;
1283eee5 147
37831078 148 //
1283eee5 149
79575d04 150 dm[21]=253.6;
151 dm[22]=65.6;
152 dm[23]=278.;
1283eee5 153
37831078 154 //
1283eee5 155
79575d04 156 dm[24]=283.7;
2a1efbbd 157 dm[25]=77.017;
79575d04 158 dm[26]=278.;
159
160 gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,27);
1283eee5 161
79575d04 162 // outer part
1283eee5 163
37831078 164 //-------------------------------------------------------------------
79575d04 165 // Tpc Outer INsulator (CO2) - contains cont. vessel and field cage
37831078 166 //-------------------------------------------------------------------
1283eee5 167
37831078 168 dm[0]= 0.;
169 dm[1]= 360.;
170 dm[2]= 6.;
1283eee5 171
37831078 172 //
1283eee5 173
79575d04 174 dm[3]=-253.6;
175 dm[4]=258.;
176 dm[5]=275.5;
1283eee5 177
37831078 178 //
1283eee5 179
79575d04 180 dm[6]=-250.6;
181 dm[7]=258.;
182 dm[8]=275.5;
1283eee5 183
37831078 184 //
1283eee5 185
79575d04 186 dm[9]=-250.6;
187 dm[10]=258.;
188 dm[11]=278.;
cc80f89e 189
79575d04 190 //
1283eee5 191
79575d04 192 dm[12]=253.6;
193 dm[13]=258.;
194 dm[14]=278.;
1283eee5 195
37831078 196 //
1283eee5 197
79575d04 198 dm[15]=253.6;
199 dm[16]=264.8;
200 dm[17]=278.;
1283eee5 201
37831078 202 //
1283eee5 203
79575d04 204 dm[18]=256.6;
205 dm[19]=264.8;
206 dm[20]=278.;
1283eee5 207
79575d04 208 gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
1283eee5 209
37831078 210 //----------------------------------------------------------------
211 // Tpc Outer Contaiment Vessel
212 // mother volume - Al, daughters - composite (sandwich)
213 //----------------------------------------------------------------
79575d04 214
215 dm[0]=0.;
216 dm[1]=360.;
720b23b8 217 dm[2]=6.;
1283eee5 218
37831078 219 //
1283eee5 220
79575d04 221 dm[3]=-250.6;
222 dm[4]=270.4;
223 dm[5]=278.;
1283eee5 224
37831078 225 //
1283eee5 226
79575d04 227 dm[6]=-247.6;
228 dm[7]=270.4;
229 dm[8]=278.;
1283eee5 230
37831078 231 //
1283eee5 232
79575d04 233 dm[9]=-247.6;
cea9b4f7 234 dm[10]=274.8124;
79575d04 235 dm[11]=278.;
1283eee5 236
37831078 237 //
1283eee5 238
79575d04 239 dm[12]=253.6;
cea9b4f7 240 dm[13]=274.8124;
79575d04 241 dm[14]=278.;
1283eee5 242
720b23b8 243 //
37831078 244
79575d04 245 dm[15]=253.6;
246 dm[16]=264.8;
247 dm[17]=278.;
1283eee5 248
79575d04 249 //
720b23b8 250
79575d04 251 dm[18]=256.6;
252 dm[19]=264.8;
253 dm[20]=278.;
720b23b8 254
255 gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
1283eee5 256
79575d04 257 // Daughter volumes - sandwich
37831078 258
259 // Tpc SAndwich 1 - Al
79575d04 260
cea9b4f7 261 dm[0]=274.8124;
79575d04 262 dm[1]=278.;
263 dm[2]=252.1;
1283eee5 264
37831078 265 gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
1283eee5 266
79575d04 267 // Tpc SAndwich 2 - epoxy glue (I use Lexan)
1283eee5 268
37831078 269 dm[0] += 5.e-3;
270 dm[1] -= 5.e-3;
79575d04 271
272 gMC->Gsvolu("TSA2","TUBE",idtmed[14],dm,3);
273
274 // Tpc SAndwich 3 - Tedlar
275
276 dm[0] += 0.01;
277 dm[1] -= 0.01;
37831078 278
79575d04 279 gMC->Gsvolu("TSA3","TUBE",idtmed[9],dm,3);
37831078 280
37831078 281
79575d04 282 // Tpc SAndwich 4 - fiber glass (G10)
37831078 283
cea9b4f7 284 dm[0] += 3.8e-3;
285 dm[1] -= 3.8e-3;
37831078 286
79575d04 287 gMC->Gsvolu("TSA4","TUBE",idtmed[12],dm,3);
37831078 288
79575d04 289 // Tpc SAndwich 5 - NOMEX honeycomb
37831078 290
79575d04 291 dm[0] += 0.075;
292 dm[1] -= 0.075;
37831078 293
79575d04 294 gMC->Gsvolu("TSA5","TUBE",idtmed[6],dm,3);
295
296 // 5->4->3->2->1->TCOV
297
37831078 298
79575d04 299 gMC->Gspos("TSA5",1,"TSA4",0.,0.,0.,0,"ONLY");
37831078 300 gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
301 gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
79575d04 302 gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
37831078 303
79575d04 304 gMC->Gspos("TSA1",1,"TOCV",0.,0.,3.,0,"ONLY");
37831078 305
306 // TCOV-> TOIN
307
308 gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
309
310 //-------------------------------------------------------
311 // Tpc Outer Field Cage
312 // mother volume - Al, daughters - composite (sandwich)
313 //-------------------------------------------------------
1283eee5 314
37831078 315 dm[0]=0.;
316 dm[1]=360.;
317 dm[2]=6.;
1283eee5 318
79575d04 319 //
320
321 dm[3]=-253.6;
322 dm[4]=258.;
323 dm[5]=275.5;
1283eee5 324
37831078 325 //
326
79575d04 327 dm[6]=-250.6;
328 dm[7]=258.;
329 dm[8]=275.5;
1283eee5 330
331 //
79575d04 332
333 dm[9]=-250.6;
334 dm[10]=258.;
cea9b4f7 335 dm[11]=260.0476;
37831078 336
1283eee5 337 //
338
79575d04 339 dm[12]=250.6;
340 dm[13]=258.;
cea9b4f7 341 dm[14]=260.0476;
1283eee5 342
37831078 343 //
1283eee5 344
79575d04 345 dm[15]=250.6;
346 dm[16]=258.;
dcf38560 347 dm[17]=269.6;
1283eee5 348
37831078 349 //
1283eee5 350
79575d04 351 dm[18]=253.6;
352 dm[19]=258.;
dcf38560 353 dm[20]=269.6;
37831078 354
79575d04 355 gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
37831078 356
357 // Daughter volumes
358
79575d04 359 // Tpc SAndwich 6 - Tedlar
37831078 360
361 dm[0]= 258.;
cea9b4f7 362 dm[1]= 260.0476;
79575d04 363 dm[2]= 252.1;
37831078 364
79575d04 365 gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3);
37831078 366
79575d04 367 // Tpc SAndwich 7 - fiber glass
37831078 368
cea9b4f7 369 dm[0] += 3.8e-3;
370 dm[1] -= 3.8e-3;
37831078 371
79575d04 372 gMC->Gsvolu("TSA7","TUBE",idtmed[12],dm,3);
1283eee5 373
1283eee5 374
79575d04 375 // Tpc SAndwich 8 - NOMEX
37831078 376
377 dm[0] += 0.02;
378 dm[1] -= 0.02;
379
79575d04 380 gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3);
37831078 381
79575d04 382 // 8->7->6->TOFC
37831078 383
79575d04 384 gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY");
385 gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
386 gMC->Gspos("TSA6",1,"TOFC",0.,0.,0.,0,"ONLY");
37831078 387
388 // TOFC->TOIN
389
79575d04 390 gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
37831078 391
392 // TOIN->TPC
393
394 gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
395
79575d04 396 // inner part
37831078 397
79575d04 398 //--------------------------------------------------------------------
399 // Tpc Inner INsulator (CO2) - inner f.c. will be placed there
400 // Inner containment vessel will be placed directly in the TPC
401 //--------------------------------------------------------------------
37831078 402
403 dm[0]=0.;
79575d04 404 dm[1]=360.;
405 dm[2]=4.;
1283eee5 406
79575d04 407 //
1283eee5 408
79575d04 409 dm[3]=-253.6;
410 dm[4]=65.9;
411 dm[5]=79.2;
1283eee5 412
37831078 413 //
1283eee5 414
79575d04 415 dm[6]=-73.3;
416 dm[7]=61.2;
417 dm[8]=79.2;
1283eee5 418
37831078 419 //
1283eee5 420
79575d04 421 dm[9]=73.3;
422 dm[10]=61.2;
423 dm[11]=79.2;
1283eee5 424
37831078 425 //
1283eee5 426
79575d04 427 dm[12]=253.6;
428 dm[13]=65.9;
429 dm[14]=79.2;
1283eee5 430
79575d04 431 gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,15);
1283eee5 432
79575d04 433 // the middle part of the F.C. is thinner - carve out the strip - Ne-CO2
1283eee5 434
79575d04 435 dm[0]=79.16;
436 dm[1]=79.2;
437 dm[2]=88.;
1283eee5 438
79575d04 439 gMC->Gsvolu("TII1","TUBE",idtmed[1],dm,3);
1283eee5 440
79575d04 441 gMC->Gspos("TII1",1,"TIIN",0.,0.,0.,0,"ONLY");
1283eee5 442
79575d04 443 //-----------------------------------------------------
444 // Tpc Inner Field Cage
445 // mother volume - Al, daughters - composite (sandwich)
446 //------------------------------------------------------
1283eee5 447
79575d04 448 dm[0]=0.;
449 dm[1]=360.;
450 dm[2]=10.;
1283eee5 451
37831078 452 //
1283eee5 453
79575d04 454 dm[3]=-253.6;
455 dm[4]=70.3;
456 dm[5]=79.2;
1283eee5 457
37831078 458 //
1283eee5 459
79575d04 460 dm[6]=-250.6;
461 dm[7]=70.3;
462 dm[8]=79.2;
1283eee5 463
37831078 464 //
1283eee5 465
79575d04 466 dm[9]=-250.6;
cea9b4f7 467 dm[10]=77.0524;
79575d04 468 dm[11]=79.2;
1283eee5 469
37831078 470 //
1283eee5 471
79575d04 472 dm[12]=-88.;
cea9b4f7 473 dm[13]=77.0524;
79575d04 474 dm[14]=79.2;
1283eee5 475
37831078 476 //
1283eee5 477
79575d04 478 dm[15]=-88.;
cea9b4f7 479 dm[16]=77.0924;
79575d04 480 dm[17]=79.16;
4b0fdcad 481
37831078 482 //
1283eee5 483
79575d04 484 dm[18]=88.;
cea9b4f7 485 dm[19]=77.0924;
79575d04 486 dm[20]=79.16;
1283eee5 487
37831078 488 //
1283eee5 489
79575d04 490 dm[21]=88.;
cea9b4f7 491 dm[22]=77.0524;
79575d04 492 dm[23]=79.2;
1283eee5 493
494 //
495
79575d04 496 dm[24]=250.6;
cea9b4f7 497 dm[25]=77.0524;
79575d04 498 dm[26]=79.2;
1283eee5 499
37831078 500 //
1283eee5 501
79575d04 502 dm[27]=250.6;
503 dm[28]=70.3;
504 dm[29]=79.2;
1283eee5 505
37831078 506 //
1283eee5 507
79575d04 508 dm[30]=253.6;
509 dm[31]=70.3;
510 dm[32]=79.2;
1283eee5 511
79575d04 512 gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,33);
1283eee5 513
79575d04 514 // daughter volumes - central part
1283eee5 515
79575d04 516 // Tpc Sandwich 9 -Tedlar
1283eee5 517
cea9b4f7 518 dm[0]=77.0924;
79575d04 519 dm[1]=79.16;
520 dm[2]=88.;
1283eee5 521
79575d04 522 gMC->Gsvolu("TSA9","TUBE",idtmed[9],dm,3);
1283eee5 523
79575d04 524 // Tpc Sandwich 10 - fiber glass (G10)
1283eee5 525
cea9b4f7 526 dm[0] += 3.8e-3;
527 dm[1] -= 3.8e-3;
1283eee5 528
79575d04 529 gMC->Gsvolu("TS10","TUBE",idtmed[12],dm,3);
1283eee5 530
79575d04 531 // Tpc Sandwich 11 - NOMEX
1283eee5 532
79575d04 533 dm[0] += 0.03;
534 dm[1] -= 0.03;
1283eee5 535
79575d04 536 gMC->Gsvolu("TS11","TUBE",idtmed[6],dm,3);
1283eee5 537
79575d04 538 // 11->10->9->TIFC
1283eee5 539
79575d04 540 gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
541 gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
1283eee5 542
79575d04 543 gMC->Gspos("TSA9",1,"TIFC",0.,0.,0.,0,"ONLY");
1283eee5 544
79575d04 545 // daughter volumes - outer parts (reinforced)
1283eee5 546
79575d04 547 // Tpc Sandwich 12 -Tedlar
1283eee5 548
cea9b4f7 549 dm[0]=77.0524;
79575d04 550 dm[1]=79.2;
551 dm[2]=82.05;
1283eee5 552
79575d04 553 gMC->Gsvolu("TS12","TUBE",idtmed[9],dm,3);
1283eee5 554
79575d04 555 // Tpc Sandwich 13 - fiber glass (G10)
1283eee5 556
cea9b4f7 557 dm[0] += 3.8e-3;
558 dm[1] -= 3.8e-3;
1283eee5 559
79575d04 560 gMC->Gsvolu("TS13","TUBE",idtmed[12],dm,3);
1283eee5 561
79575d04 562 // Tpc Sandwich 14 - NOMEX
1283eee5 563
79575d04 564 dm[0] += 0.07;
565 dm[1] -= 0.07;
1283eee5 566
79575d04 567 gMC->Gsvolu("TS14","TUBE",idtmed[6],dm,3);
1283eee5 568
79575d04 569 // 14->13->12->TIFC
1283eee5 570
79575d04 571 gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
572 gMC->Gspos("TS13",1,"TS12",0.,0.,0.,0,"ONLY");
1283eee5 573
79575d04 574 gMC->Gspos("TS12",1,"TIFC",0.,0.,170.05,0,"ONLY");
575 gMC->Gspos("TS12",2,"TIFC",0.,0.,-170.05,0,"ONLY");
1283eee5 576
79575d04 577 // place this inside the inner insulator
1283eee5 578
79575d04 579 gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
1283eee5 580
79575d04 581 // and now in the TPC...
1283eee5 582
79575d04 583 gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
1283eee5 584
79575d04 585 //---------------------------------------------------------
586 // Tpc Inner Containment vessel - Cones
587 //---------------------------------------------------------
1283eee5 588
79575d04 589 dm[0]=0.;
590 dm[1]=360.;
37831078 591 dm[2]=8.;
1283eee5 592
37831078 593 //
1283eee5 594
79575d04 595 dm[3]=71.8;
596 dm[4]=56.9;
597 dm[5]=59.4;
1283eee5 598
37831078 599 //
1283eee5 600
79575d04 601 dm[6]=73.;
602 dm[7]=56.9;
603 dm[8]=59.4;
1283eee5 604
37831078 605 //
1283eee5 606
79575d04 607 dm[9]=73.;
608 dm[10]=56.9;
609 dm[11]=61.2;
1283eee5 610
37831078 611 //
1283eee5 612
79575d04 613 dm[12]=73.3;
614 dm[13]=56.9;
615 dm[14]=61.2;
1283eee5 616
37831078 617 //
79575d04 618
619 dm[15]=73.3;
620 dm[16]=60.9;
621 dm[17]=61.2;
1283eee5 622
79575d04 623 //
4b0fdcad 624
79575d04 625 dm[18]=253.6;
626 dm[19]=65.6;
627 dm[20]=65.9;
4b0fdcad 628
4b0fdcad 629 //
37831078 630
79575d04 631 dm[21]=253.6;
632 dm[22]=65.6;
f4900c61 633 dm[23]=74.6;
37831078 634
4b0fdcad 635 //
4b0fdcad 636
f4900c61 637 dm[24]=256.6;
79575d04 638 dm[25]=65.6;
f4900c61 639 dm[26]=74.6;
37831078 640
79575d04 641 gMC->Gsvolu("TICC","PCON",idtmed[4],dm,27);
37831078 642
79575d04 643 Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
37831078 644
79575d04 645 // reflection matrix
646
647 theta1 = 90.;
648 phi1 = 0.;
649 theta2 = 90.;
650 phi2 = 270.;
651 theta3 = 180.;
652 phi3 = 0.;
4b0fdcad 653
79575d04 654 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
4b0fdcad 655
79575d04 656 gMC->Gspos("TICC",1,"TPC ",0.,0.,0.,0,"ONLY");
657 gMC->Gspos("TICC",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
37831078 658
37831078 659
79575d04 660 //---------------------------------------------------------
661 // Tpc Inner Containment vessel - Middle part -Al
662 //---------------------------------------------------------
37831078 663
79575d04 664 dm[0]=0.;
665 dm[1]=360.;
666 dm[2]=6.;
37831078 667
4b0fdcad 668 //
4b0fdcad 669
79575d04 670 dm[3]=-71.6;
671 dm[4]=60.2;
672 dm[5]=61.2;
37831078 673
4b0fdcad 674 //
37831078 675
79575d04 676 dm[6]=-69.1;
677 dm[7]=60.2;
678 dm[8]=61.2;
37831078 679
4b0fdcad 680 //
37831078 681
79575d04 682 dm[9]=-69.1;
cea9b4f7 683 dm[10]=60.6224;
79575d04 684 dm[11]=61.2;
37831078 685
686 //
687
79575d04 688 dm[12]=69.1;
cea9b4f7 689 dm[13]=60.6224;
79575d04 690 dm[14]=61.2;
37831078 691
692 //
693
79575d04 694 dm[15]=69.1;
695 dm[16]=60.2;
696 dm[17]=61.2;
37831078 697
698 //
699
79575d04 700 dm[18]=71.6;
701 dm[19]=60.2;
702 dm[20]=61.2;
37831078 703
79575d04 704 gMC->Gsvolu("TICM","PCON",idtmed[4],dm,21);
37831078 705
79575d04 706 // Tpc Sandwich 15 - Al
37831078 707
cea9b4f7 708 dm[0]=60.6224;
79575d04 709 dm[1]=61.2;
710 dm[2]=70.1;
37831078 711
79575d04 712 gMC->Gsvolu("TS15","TUBE",idtmed[4],dm,3);
37831078 713
79575d04 714 // Tpc Sandwich 16 - epoxy glue
37831078 715
79575d04 716 dm[0] += 5.e-3;
717 dm[1] -= 5.e-3;
37831078 718
79575d04 719 gMC->Gsvolu("TS16","TUBE",idtmed[14],dm,3);
37831078 720
6a905708 721 // Tpc Sandwich 17 - Tedlar
37831078 722
79575d04 723 dm[0] += 0.01;
724 dm[1] -= 0.01;
37831078 725
6a905708 726 gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
37831078 727
cea9b4f7 728 // Tpc Sandwich 18 - carbon fiber
37831078 729
cea9b4f7 730 dm[0] += 3.8e-3;
731 dm[1] -= 3.8e-3;
37831078 732
cea9b4f7 733 gMC->Gsvolu("TS18","TUBE",idtmed[15],dm,3);
37831078 734
79575d04 735 // Tpc Sandwich 19 - Nomex
37831078 736
cea9b4f7 737 dm[0] += 0.02;
738 dm[1] -= 0.02;
37831078 739
90222263 740 gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3);
37831078 741
79575d04 742 // 19->18->17->16->15-> TICM
37831078 743
79575d04 744 gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
37831078 745 gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
79575d04 746 gMC->Gspos("TS17",1,"TS16",0.,0.,0.,0,"ONLY");
747 gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
37831078 748
79575d04 749 gMC->Gspos("TS15",1,"TICM ",0.,0.,0.,0,"ONLY");
750
37831078 751
79575d04 752 // TPc inner cont. vessel Joints
37831078 753
79575d04 754 dm[0]=60.2;
755 dm[1]=61.2;
756 dm[2]=0.5;
37831078 757
79575d04 758 gMC->Gsvolu("TPJ1","TUBE",idtmed[4],dm,3);
37831078 759
79575d04 760 gMC->Gspos("TPJ1",1,"TPC ",0.,0.,72.3,0,"ONLY");
761 gMC->Gspos("TPJ1",2,"TPC ",0.,0.,-72.3,0,"ONLY");
37831078 762
79575d04 763 //
37831078 764
79575d04 765 dm[0]=0.;
766 dm[1]=360.;
767 dm[2]=4.;
37831078 768
79575d04 769 //
37831078 770
79575d04 771 dm[3]=70.8;
772 dm[4]=58.4;
773 dm[5]=60.1;
37831078 774
79575d04 775 //
37831078 776
79575d04 777 dm[6]=71.2;
778 dm[7]=58.4;
779 dm[8]=60.1;
37831078 780
79575d04 781 //
37831078 782
79575d04 783 dm[9]=71.2;
784 dm[10]=58.4;
785 dm[11]=59.4;
37831078 786
79575d04 787 //
37831078 788
79575d04 789 dm[12]=71.6;
790 dm[13]=58.4;
791 dm[14]=59.4;
37831078 792
79575d04 793 gMC->Gsvolu("TPJ2","PCON",idtmed[4],dm,15);
37831078 794
79575d04 795 gMC->Gspos("TPJ2",1,"TPC ",0.,0.,0.,0,"ONLY");
796 gMC->Gspos("TPJ2",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
37831078 797
37831078 798
37831078 799
79575d04 800 // Tpc Inner Containment vessel Seal (Viton, I use Lexan for a time being)
37831078 801
79575d04 802 dm[0]=58.4;
803 dm[1]=61.2;
804 dm[2]=0.1;
37831078 805
79575d04 806 gMC->Gsvolu("TICS","TUBE",idtmed[14],dm,3);
37831078 807
79575d04 808 gMC->Gspos("TICS",1,"TPC ",0.,0.,71.7,0,"ONLY");
809 gMC->Gspos("TICS",2,"TPC ",0.,0.,-71.7,0,"ONLY");
37831078 810
79575d04 811 // TICM -> TPC
37831078 812
79575d04 813 gMC->Gspos("TICM",1,"TPC ",0.,0.,0.,0,"ONLY");
37831078 814
79575d04 815 //
37831078 816
79575d04 817 nRotMat++; // prepare for the next rotation matrix
37831078 818
819 //---------------------------------------------------------
820 // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
821 // and its daughters (HV membrane, rods, readout chambers)
822 //---------------------------------------------------------
823
824 dm[0]= 79.2;
825 dm[1]= 258.0;
826 dm[2]= 253.6;
827
79575d04 828 gMC->Gsvolu("TDGS","TUBE",idtmed[2],dm,3);
37831078 829
830 // sector opening angles
831
832 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
833
834 // sector angle shift
835
836 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
837
838 // number of sectors
839
840 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
841 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
842
843 // All above parameters are identical for inner and outer
844 // sectors. The distinction is kept for the historical reasons
845 // and eventually will disappear.
846
847 Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
848 Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
849 Float_t space;
850
851 //-------------------------------------------------------------------------
852 // Tpc Inner Readout Chambers
853 //-------------------------------------------------------------------------
854
855 dm[0]= 14.483;
856 dm[1]= 23.3345;
857 dm[2]= 1.6; // thickness
858 dm[3]= 25.1;
859
860 gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
861
862 // this volume will be positioned in the empty space
863 // of the end-cap to avoid overlaps
864
865 dm[0]= 13.7305;
866 dm[1]= 21.1895;
867 dm[2]= 2.25;
868 dm[3]= 21.15;
869
870 gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
871
872
873 //------------------------------------------------
874 // Tpc Inner readout chamber Pad Plane
875 //------------------------------------------------
876
877 dm[0]= 14.483;
878 dm[1]= 23.3345;
879 dm[2]= 0.5;
880 dm[3]= 25.1;
881
882 gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
883
884 //
885
886 dm[0] -= 1.218511934;
887 dm[1] -= 1.218511934;
888 dm[2] = 0.35;
889
79575d04 890 gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
37831078 891
892 gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
893
894 gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
895
896
897 //----------------------------------------------
898 // Tpc Readout Chambers Empty spaces - for both
899 // inner and outer sectors
900 //----------------------------------------------
901
902 gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
903
904 // Inner sector - 4 spaces
905
906
907 dm[3] = 4.7625;
908 dm[0] = 12.472;
909
910 Float_t rr = 90.52;
911 Float_t zz;
912
913 zz= -12.7875;
914
915 space = rr*tanAlpha-dm[0];
916
917 for(Int_t nsLow=0;nsLow<4;nsLow++){
918
919 rr += 9.525;
920 dm[1]= rr*tanAlpha - space;
921
922 dm[2]=0.8;
923
924 gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
925
926 //
927
79575d04 928 dm[2] = 1.2;
37831078 929
930 gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
931
932 rr += 0.4;
933 dm[0] = rr*tanAlpha - space;
934 zz += (0.4+9.525);
935
936 }
937
938 dm[0]= 12.472;
939 // dm[1] - this is the dm[1] from the previous TRCE
940 dm[2]= 1.05;
941 dm[3]= 19.65;
942
79575d04 943 gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);
37831078 944
945 //
946 // TPc Space for Connectors
947 //
948
949 dm[0]= .3;
950 dm[1]= .3;
951 dm[2]= 4.5;
952
953 gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
954
955 // TPC Connectors
956
957 dm[0]= .25;
958 dm[1]= .15;
959 dm[2]= 3.75;
960
961 gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
962
963 gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
964
965 zz = -12.7875;
966
967
968 Float_t alpha;
969 Float_t astep;
970
37831078 971 // inner part of the inner sector - 2 x 20 holes
972
973 astep = 20.00096874/19.;
974
975 alpha = 10.00048437-astep;
976
977 Float_t x1,x2;
978
979 x1 = 13.31175725;
980 x1 -= 0.996357832;
981
982 x2 = 15.06180253;
983 x2 -= 1.163028812;
984
985 Int_t ncon;
986
987 for(ncon=0;ncon<20;ncon++){
988
989 phi1 = 0.;
990 theta1 = 90.+alpha;
991 phi2=90.;
992 theta2 = 90.;
993 phi3 = (alpha>0) ? 0. : 180.;
994 theta3 = TMath::Abs(alpha);
995
996 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
997
998
999
1000 gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1001 gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1002
1003
1004 x1 -= 1.296357833;
1005 x2 -= 1.463028812;
1006
1007 alpha -= astep;
1008 nRotMat++;
1009
1010 }
1011
1012 // outer part of the inner sector - 2 x 25 holes
1013
1014 astep = 20.00096874/24.;
1015 alpha = 10.00048437-astep;
1016
1017 x1 = 16.81184781;
1018 x1 -= 1.016295986;
1019
1020 x2 = 18.5618931;
1021 x2 -= 1.150914854;
1022
1023 for(ncon=0;ncon<25;ncon++){
1024
1025 phi1 = 0.;
1026 theta1 = 90.+alpha;
1027 phi2=90.;
1028 theta2 = 90.;
1029 phi3 = (alpha>0) ? 0. : 180.;
1030 theta3 = TMath::Abs(alpha);
1031
1032 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1033
1034
1035
1036 gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1037 gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1038
1039
1040 x1 -= 1.316295986;
1041 x2 -= 1.450914854;
1042
1043 alpha -= astep;
1044 nRotMat++;
1045
1046 }
1047
1048 //--------------------------------------------------------------------------
1049 // TPC Outer Readout Chambers
1050 // this is NOT a final design
1051 //--------------------------------------------------------------------------
1052
1053 dm[0]= 23.3875;
1054 dm[1]= 43.524;
1055 dm[2]= 1.5; //thickness
1056 dm[3]= 57.1;
1057
1058 gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1059
1060 //------------------------------------------------
79575d04 1061 // Tpc Outer readout chamber Pad Plane
37831078 1062 //------------------------------------------------
1063
1064 dm[2]= 0.5;
1065
1066 gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1067
1068 dm[0] -= 1.218511934;
1069 dm[1] -= 1.218511934;
1070 dm[2] = 0.35;
1071
79575d04 1072 gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
37831078 1073
1074 gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1075
1076 gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1077
1078 // empty space
1079
37831078 1080 dm[0]= 21.035;
1081 dm[1]= 38.7205;
1082 dm[2]= 0.7;
1083 dm[3]= 50.15;
1084
1085 gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1086
1087 dm[0]= 22.2935;
1088 dm[1]= 40.5085;
1089 dm[2]= 2.25;
1090 dm[3]= 51.65;
1091
1092 gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1093
37831078 1094 dm[0]= 21.35;
1095 dm[1]= 38.7205;
1096 dm[2]= 2.25;
1097 dm[3]= 50.15;
1098
79575d04 1099 gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
37831078 1100
1101 //-----------------------------------------------
1102 // Tpc Services Support Wheel
1103 //-----------------------------------------------
1104
1105 dm[0]=0.;
1106 dm[1]=360.;
1107 dm[2]=18.;
1108 dm[3]=2.;
1109
1110 dm[4]= -5.;
1111 dm[5]= 77.017;
1112 dm[6]= 255.267;
1113
1114 dm[7]= 5.;
1115 dm[8]= dm[5];
1116 dm[9]= dm[6];
1117
1118 gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1119
1120 // Tpc Services Wheel Cover
1121
1122 dm[4]= -0.5;
1123 dm[7]= 0.5;
1124
1125 gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1126
1127 // Tpc Service wheel Cover Empty space
1128
1129 dm[0]= 10.99;
1130 dm[1]= 39.599;
1131 dm[2]= .5;
1132 dm[3]= 81.125;
1133
1134 gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1135
1136 // Tpc services Wheel Empty Spaces
1137
1138 dm[0]= 13.18017507;
1139 dm[1]= 44.61045938;
1140 dm[2]= 4.;
1141 dm[3]= 89.125;
1142
1143 gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1144
1145 // Tpc Services Wheel Bars
1146
1147 gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1148
1149 // bars-> TWES
1150
1151 dm[2]= 4.;
1152 dm[3]= .4;
1153
1154 dm[0]= 13.8149522;
1155 dm[1]= 13.95601379;
1156
1157 gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1158
1159 dm[0]= 43.83462067;
1160 dm[1]= 43.97568225;
1161
1162 gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1163
1164 // TPc ELectronics - right now 30% X0 Si
1165
1166 dm[0]= 14.03813696;
1167 dm[1]= 43.3524075;
1168 dm[2]= 1.404;
1169 dm[3]= 83.125;
1170
1171 gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1172 gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1173
37831078 1174 //--------------------------------------------------------------------------
1175 // End caps
1176 //--------------------------------------------------------------------------
1177
1178 // TPc Main Wheel - Al
1179
79575d04 1180 dm[0]= 74.9;
1181 dm[1]= 264.4;
37831078 1182 dm[2]= 3.0;
1183
1184 gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1185
37831078 1186 //--------------------------------------------------------------------------
1187 // Tpc Empty Space for the Readout chambers
1188 //--------------------------------------------------------------------------
1189
1190 Float_t rLow= 86.2;
1191 Float_t rUp= 243.5;
1192 Float_t dR = 0.5*(rUp-rLow);
1193
79575d04 1194 space= 1.5/cosAlpha; // wheel ribs are 3.0 cm wide
37831078 1195
1196 dm[0]= rLow*tanAlpha-space;
1197 dm[1]= rUp*tanAlpha-space;
79575d04 1198 dm[2] = 3.0;
37831078 1199 dm[3]= dR;
1200
1201 gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1202
1203 // TIC1->TESR
1204
37831078 1205 gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1206
37831078 1207 // TOC1->TESR
1208
1209 gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1210
1211 // Tpc Empty Space Bars - Al (daughters of TESR)
1212
1213 Float_t zBar;
1214
1215 gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1216
1217 // lower bar
1218
1219 dm[0]= rLow*tanAlpha-space;
1220 dm[1]= 88.7*tanAlpha-space;
79575d04 1221 dm[2]= 2.25;
37831078 1222 dm[3]= 1.275;
1223
1224 zBar = -dR+dm[3];
1225
79575d04 1226 gMC->Gsposp("TESB",1,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
37831078 1227
1228 // middle bar
1229
1230 dm[0]= 131.65*tanAlpha-space;
1231 dm[1]= 136.5*tanAlpha-space;
1232 dm[3]= 2.425;
1233
1234 zBar = -dR +131.65+dm[3]-rLow;
1235
79575d04 1236 gMC->Gsposp("TESB",2,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
37831078 1237
1238 // upper bar
1239
1240 dm[0]= 240.4*tanAlpha-space;
1241 dm[1]= rUp*tanAlpha-space;
1242 dm[3]= 1.55;
1243
1244 zBar = dR-dm[3];
1245
79575d04 1246 gMC->Gsposp("TESB",3,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
37831078 1247
1248 // positioning of the empty spaces into the main wheel
1249
1250 Float_t rCenter,xc,yc;
1251 Float_t rInner,rOuter; // center of the inner and outer chamber
1252
1253 rCenter = rLow+dR;
1254
1255 rInner = 108.07;
1256 rOuter = 190.68;
1257
79575d04 1258
37831078 1259 for(Int_t ns=0; ns<nInnerSector;ns++){
1260
1261 phi1 = ns * innerOpenAngle + innerAngleShift;
1262 phi1 *= kRaddeg; // in degrees
1263
1264 phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1265
1266 if (phi1 > 360.) phi1 -= 360.;
1267
1268 theta1 = 90.;
1269 phi2 = 90.;
1270 theta2 = 180.;
1271 phi3 = ns * innerOpenAngle + innerAngleShift;
1272 phi3 *= kRaddeg; // in degrees
1273
1274 phi3 = (Float_t)TMath::Nint(phi3);
1275
1276 if(phi3 > 360.) phi3 -= 360.;
1277
1278 theta3 = 90.;
1279
1280 // "holes"->End plate
1281
1282 xc = rCenter*TMath::Cos(phi3*kDegrad);
1283 yc = rCenter*TMath::Sin(phi3*kDegrad);
1284
1285 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1286
1287 gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1288
1289 // TSCE->TSWC (services wheel volumes)
1290
1291 xc = 166.142*TMath::Cos(phi3*kDegrad);
1292 yc = 166.142*TMath::Sin(phi3*kDegrad);
1293
1294 gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1295 gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1296
1297
1298 // readout chambers->TDGS (drift gas)
1299
1300 xc = rInner*TMath::Cos(phi3*kDegrad);
1301 yc = rInner*TMath::Sin(phi3*kDegrad);
1302
1303 gMC->Gspos("TIRC",ns+1,"TDGS",xc,yc,252.,idrotm[nRotMat],"ONLY");
1304
1305 xc = rOuter*TMath::Cos(phi3*kDegrad);
1306 yc = rOuter*TMath::Sin(phi3*kDegrad);
1307
1308 gMC->Gspos("TORC",ns+1,"TDGS",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1309
1310 nRotMat++;
1311
1312 theta2 = 0.; // reflection
1313
1314 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1315
1316 xc = rInner*TMath::Cos(phi3*kDegrad);
1317 yc = rInner*TMath::Sin(phi3*kDegrad);
1318
1319 gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGS",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1320
1321 xc = rOuter*TMath::Cos(phi3*kDegrad);
1322 yc = rOuter*TMath::Sin(phi3*kDegrad);
1323
1324 gMC->Gspos("TORC",ns+nOuterSector+1,"TDGS",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1325
1326 nRotMat++;
1327
37831078 1328 }
37831078 1329 // TPMW->TPC
1330
1331 gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
79575d04 1332 gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[0],"ONLY");
1333
1334 //---------------------------------------------------------
1335 // Tpc High Voltage Membrane - 100 microns of mylar
1336 //---------------------------------------------------------
37831078 1337
79575d04 1338 dm[0]=82.8;
1339 dm[1]=252.;
1340 dm[2]=0.005;
37831078 1341
79575d04 1342 gMC->Gsvolu("THVM","TUBE",idtmed[8],dm,3);
37831078 1343
79575d04 1344 gMC->Gspos("THVM",1,"TDGS",0.,0.,0.,0,"ONLY");
37831078 1345
79575d04 1346 // Tpc High Voltage membrane Holders
37831078 1347
79575d04 1348 gMC->Gsvolu("THVH","TUBE",idtmed[4],dm,0);
37831078 1349
79575d04 1350
37831078 1351
79575d04 1352 // inner
37831078 1353
79575d04 1354 dm[0]=79.3;
1355 dm[1]=82.8;
1356 dm[2]=0.2;
37831078 1357
79575d04 1358 gMC->Gsposp("THVH",1,"TDGS",0.,0.,0.,0,"ONLY",dm,3);
1359
1360 // outer
37831078 1361
79575d04 1362 dm[0]= 252.;
1363 dm[1]= 257.9;
1364 dm[2]= 0.4;
1365
1366 gMC->Gsposp("THVH",2,"TDGS",0.,0.,0.,0,"ONLY",dm,3);
37831078 1367
1368 //----------------------------------------------------------
1369 // TPc Support Rods - MAKROLON
1370 //----------------------------------------------------------
1371
1372 dm[0]= 0.9;
1373 dm[1]= 1.2;
37831078 1374
79575d04 1375 gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,0); // inner and outer rods differ
37831078 1376
79575d04 1377
1378 for(Int_t nrod=0;nrod<18;nrod++){
37831078 1379 Float_t angle=innerOpenAngle*(Float_t)nrod;
1380
79575d04 1381 xc=81.5*TMath::Cos(angle);
1382 yc=81.5*TMath::Sin(angle);
37831078 1383
79575d04 1384 dm[2]=126.7;
37831078 1385
79575d04 1386 gMC->Gsposp("TPSR",nrod+1,"TDGS",xc,yc,126.9,0,"ONLY",dm,3);
1387 gMC->Gsposp("TPSR",nrod+19,"TDGS",xc,yc,-126.9,0,"ONLY",dm,3);
37831078 1388
79575d04 1389 dm[2]=126.6;
37831078 1390
79575d04 1391 xc=254.25*TMath::Cos(angle);
1392 yc=254.25*TMath::Sin(angle);
1393
1394 // rod number 54 contans the HV cable
1395
1396 if(nrod<17) {
1397 gMC->Gsposp("TPSR",nrod+37,"TDGS",xc,yc,127.,0,"ONLY",dm,3);
1398 gMC->Gsposp("TPSR",nrod+54,"TDGS",xc,yc,-127.,0,"ONLY",dm,3);
1399 }
1400
37831078 1401 }
1402
1403 //----------------------------------------------------------
79575d04 1404 // Tpc High Voltage Rod - MAKROLON + Copper cable
37831078 1405 //----------------------------------------------------------
1406
1407 // rod with cable (Left)
1408
1409 dm[0]=0.;
1410 dm[1]=2.25;
79575d04 1411 dm[2]=126.6;
37831078 1412
1413 gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1414
1415 // HV cable
1416
1417 dm[0]=0.;
1418 dm[1]=0.3;
79575d04 1419 dm[2]=126.6;
37831078 1420
79575d04 1421 gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
37831078 1422
1423 // empty space
1424
1425 dm[0]=0.3;
1426 dm[1]=1.;
79575d04 1427 dm[2]=126.6;
37831078 1428
1429 gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1430
1431 gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1432 gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1433
1434 // rod without cable
1435
1436 dm[0]=1.8;
1437 dm[1]=2.25;
79575d04 1438 dm[2]=126.6;
37831078 1439
1440 gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1441
79575d04 1442 gMC->Gspos("THVL",1,"TDGS",xc,yc,-127.,0,"ONLY");
1443 gMC->Gspos("THVR",1,"TDGS",xc,yc,127.,0,"ONLY");
37831078 1444
1445 gMC->Gspos("TDGS",1,"TPC ",0.,0.,0.,0,"ONLY");
79575d04 1446
37831078 1447 // services wheel cover -> wheel
1448
1449
1450 gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1451 gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1452
1453
1454 // put the wheel into the TPC
1455
1456 gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1457 gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1458
79575d04 1459 //
1460
37831078 1461 gMC->Gsord("TPMW",6);
1462 gMC->Gsord("TSSW",6);
1463 gMC->Gsord("TSWC",6);
1464
1465 // put the TPC into ALIC (main mother volume)
1466
1467 gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY");
1468
1469
1470} // end of function
37831078 1471
1472//_____________________________________________________________________________
1473void AliTPCv3::DrawDetector()
1474{
1475 //
79575d04 1476 // Draw a shaded view of the Time Projection Chamber version 3
37831078 1477 //
1478
1479
1480 // Set everything unseen
1481 gMC->Gsatt("*", "seen", -1);
1482 //
1483 // Set ALIC mother transparent
1484 gMC->Gsatt("ALIC","SEEN",0);
1485 //
1486 // Set the volumes visible
1487 //
1488
1489 gMC->Gsatt("TPC ","SEEN",0);
1490 gMC->Gsatt("TOIN","SEEN",1);
1491 gMC->Gsatt("TOIN","COLO",7);
37831078 1492 gMC->Gsatt("TOCV","SEEN",1);
1493 gMC->Gsatt("TOCV","COLO",4);
1494 gMC->Gsatt("TSA1","SEEN",0);
1495 gMC->Gsatt("TSA2","SEEN",0);
1496 gMC->Gsatt("TSA3","SEEN",0);
79575d04 1497 gMC->Gsatt("TSA4","SEEN",0);
1498 gMC->Gsatt("TSA5","SEEN",0);
37831078 1499 gMC->Gsatt("TOFC","SEEN",1);
1500 gMC->Gsatt("TOFC","COLO",4);
37831078 1501 gMC->Gsatt("TSA6","SEEN",0);
1502 gMC->Gsatt("TSA7","SEEN",0);
79575d04 1503 gMC->Gsatt("TSA8","SEEN",0);
37831078 1504 gMC->Gsatt("TIIN","SEEN",1);
79575d04 1505 gMC->Gsatt("TIIN","COLO",7);
1506 gMC->Gsatt("TII1","SEEN",0);
1507 gMC->Gsatt("TIFC","SEEN",1);
1508 gMC->Gsatt("TIFC","COLO",4);
1509 gMC->Gsatt("TSA9","SEEN",0);
37831078 1510 gMC->Gsatt("TS10","SEEN",0);
1511 gMC->Gsatt("TS11","SEEN",0);
1512 gMC->Gsatt("TS12","SEEN",0);
37831078 1513 gMC->Gsatt("TS13","SEEN",0);
1514 gMC->Gsatt("TS14","SEEN",0);
79575d04 1515 gMC->Gsatt("TICC","SEEN",0);
1516 gMC->Gsatt("TICM","SEEN",0);
37831078 1517 gMC->Gsatt("TS15","SEEN",0);
1518 gMC->Gsatt("TS16","SEEN",0);
37831078 1519 gMC->Gsatt("TS17","SEEN",0);
79575d04 1520 gMC->Gsatt("TS18","SEEN",0);
1521 gMC->Gsatt("TS19","SEEN",0);
1522 gMC->Gsatt("TPJ1","SEEN",0);
1523 gMC->Gsatt("TPJ2","SEEN",0);
1524 gMC->Gsatt("TICS","SEEN",0);
1525 gMC->Gsatt("TDGS","SEEN",0);
37831078 1526 gMC->Gsatt("TIRC","SEEN",0);
1527 gMC->Gsatt("TIC1","SEEN",1);
1528 gMC->Gsatt("TIPP","SEEN",0);
1529 gMC->Gsatt("TIC3","SEEN",0);
1530 gMC->Gsatt("TRCE","SEEN",0);
1531 gMC->Gsatt("TPSC","SEEN",0);
79575d04 1532 gMC->Gsatt("TPCC","SEEN",0);
37831078 1533 gMC->Gsatt("TORC","SEEN",0);
1534 gMC->Gsatt("TOPP","SEEN",0);
1535 gMC->Gsatt("TOC3","SEEN",0);
1536 gMC->Gsatt("TOC1","SEEN",1);
1537 gMC->Gsatt("TSSW","SEEN",1);
1538 gMC->Gsatt("TSWC","SEEN",1);
37831078 1539 gMC->Gsatt("TSSW","COLO",3);
1540 gMC->Gsatt("TSWC","COLO",3);
1541 gMC->Gsatt("TSCE","COLO",6);
79575d04 1542 gMC->Gsatt("TSCE","SEEN",1);
37831078 1543 gMC->Gsatt("TWES","SEEN",0);
1544 gMC->Gsatt("TSWB","SEEN",0);
1545 gMC->Gsatt("TPEL","SEEN",0);
1546 gMC->Gsatt("TPMW","SEEN",1);
37831078 1547 gMC->Gsatt("TESR","SEEN",1);
1548 gMC->Gsatt("TPMW","COLO",12);
37831078 1549 gMC->Gsatt("TIC1","COLO",5);
79575d04 1550 gMC->Gsatt("TOC1","COLO",5);
37831078 1551 gMC->Gsatt("TESB","SEEN",0);
37831078 1552 gMC->Gsatt("THVM","SEEN",1);
1553 gMC->Gsatt("THVM","COLO",11);
79575d04 1554 gMC->Gsatt("THVH","SEEN",0);
1555 gMC->Gsatt("TPSR","SEEN",0);
37831078 1556 gMC->Gsatt("THVL","SEEN",0);
79575d04 1557 gMC->Gsatt("THVC","SEEN",0);
37831078 1558 gMC->Gsatt("THVE","SEEN",0);
1559 gMC->Gsatt("THVR","SEEN",0);
1560
1561 //
1562 gMC->Gdopt("hide", "on");
1563 gMC->Gdopt("shad", "on");
1564 gMC->Gsatt("*", "fill", 7);
1565 gMC->SetClipBox(".");
1566 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1567 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1568 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1569 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1570 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1571 gMC->DefaultRange();
1572 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1573 gMC->Gdhead(1111, "Time Projection Chamber");
1574 gMC->Gdman(18, 4, "MAN");
1575 gMC->Gdopt("hide","off");
1576}
1577
1578//_____________________________________________________________________________
1579void AliTPCv3::CreateMaterials()
1580{
1581 //
1582 // Define materials for version 2 of the Time Projection Chamber
1583 //
1584
1585
1586 //
1587 AliTPC::CreateMaterials();
1588}
1589
1590//_____________________________________________________________________________
1591void AliTPCv3::Init()
1592{
1593 //
1594 // Initialises version 3 of the TPC after that it has been built
1595 //
1596 Int_t *idtmed = fIdtmed->GetArray();
4b0fdcad 1597
1598 AliTPC::Init();
1599
37831078 1600 fIdSens=gMC->VolId("TDGS"); // drift gas as a sensitive volume
4b0fdcad 1601
1602 gMC->SetMaxNStep(30000); // max. number of steps increased
1603
37831078 1604 gMC->Gstpar(idtmed[2],"LOSS",5);
4b0fdcad 1605
13a8c8d7 1606 printf("%s: *** TPC version 3 initialized***\n",ClassName());
1607
1608 printf("%s: Maximum number of steps = %d\n",ClassName(),gMC->GetMaxNStep());
1609
1610 // printf("*** TPC version 3 initialized ***\n");
1611 // printf("Maximum number of steps = %d\n",gMC->GetMaxNStep());
4b0fdcad 1612
1613 //
1614
1615}
1616
1617//_____________________________________________________________________________
1618void AliTPCv3::StepManager()
1619{
1620 //
1621 // Called for every step in the Time Projection Chamber
1622 //
1623
1624 //
1625 // parameters used for the energy loss calculations
1626 //
73042f01 1627 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1628 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1629 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
4b0fdcad 1630
1631
73042f01 1632 const Float_t kbig = 1.e10;
4b0fdcad 1633
1634 Int_t id,copy;
1635 TLorentzVector pos;
1636 Float_t hits[4];
1637 Int_t vol[2];
4b0fdcad 1638
1639 vol[1]=0;
1640 vol[0]=0;
1641
1642 //
1643
73042f01 1644 gMC->SetMaxStep(kbig);
4b0fdcad 1645
1646 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1647
1648 Float_t charge = gMC->TrackCharge();
1649
1650 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1651
1652
1653 id=gMC->CurrentVolID(copy);
1654
1655 // Check the sensitive volume
1656
37831078 1657 if (id != fIdSens) return;
4b0fdcad 1658
1659 //
1660 // charged particle is in the sensitive volume
1661 //
1662
1663 if(gMC->TrackStep() > 0) {
1664
1665
73042f01 1666 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
4b0fdcad 1667 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1668
1669 gMC->TrackPosition(pos);
1670 hits[0]=pos[0];
1671 hits[1]=pos[1];
1672 hits[2]=pos[2];
1673
1674 //
1675 // check the selected side of the TPC
1676 //
1677
1678 if(fSide && fSide*hits[2]<=0.) return;
1679
1680 hits[3]=(Float_t)nel;
1681
1682 // Add this hit
1683
5d12ce38 1684 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); //MI change
4b0fdcad 1685
1686 }
1687
1688 // Stemax calculation for the next step
1689
1690 Float_t pp;
1691 TLorentzVector mom;
1692 gMC->TrackMomentum(mom);
1693 Float_t ptot=mom.Rho();
73042f01 1694 Float_t betaGamma = ptot/gMC->TrackMass();
4b0fdcad 1695
69e40cce 1696 Int_t pid=gMC->TrackPid();
cc80f89e 1697 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
4b0fdcad 1698 {
73042f01 1699 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
4b0fdcad 1700 }
1701 else
1702 {
7b562732 1703 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3);
73042f01 1704 pp=kprim*BetheBloch(betaGamma);
4b0fdcad 1705 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1706 }
1707
b9d0a01d 1708 Double_t rnd = gMC->GetRandom()->Rndm();
4b0fdcad 1709
1710 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1711
1712}
1713
1714//_____________________________________________________________________________
1715Float_t AliTPCv3::BetheBloch(Float_t bg)
1716{
1717 //
1718 // Bethe-Bloch energy loss formula
1719 //
73042f01 1720 const Double_t kp1=0.76176e-1;
1721 const Double_t kp2=10.632;
1722 const Double_t kp3=0.13279e-4;
1723 const Double_t kp4=1.8631;
1724 const Double_t kp5=1.9479;
4b0fdcad 1725
1726 Double_t dbg = (Double_t) bg;
1727
1728 Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
1729
73042f01 1730 Double_t aa = TMath::Power(beta,kp4);
1731 Double_t bb = TMath::Power(1./dbg,kp5);
4b0fdcad 1732
73042f01 1733 bb=TMath::Log(kp3+bb);
4b0fdcad 1734
73042f01 1735 return ((Float_t)((kp2-aa-bb)*kp1/aa));
4b0fdcad 1736}