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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$Log$
18*/
19
fe4da5cc 20///////////////////////////////////////////////////////////////////////////////
21// //
22// Time Projection Chamber version 1 -- detailed TPC and fast simulation //
23// //
24//Begin_Html
25/*
1439f98e 26<img src="picts/AliTPCv1Class.gif">
fe4da5cc 27*/
28//End_Html
29// //
30// //
31///////////////////////////////////////////////////////////////////////////////
32
33#include <TMath.h>
34#include <TGeometry.h>
35#include <TNode.h>
36#include <TBRIK.h>
37#include <TTUBE.h>
38#include "AliTPCv1.h"
39#include "AliRun.h"
40#include <iostream.h>
41#include <fstream.h>
42
43#include "AliMC.h"
44#include "AliConst.h"
45
8c555625 46#include "AliTPCParam.h"
47#include "AliTPCD.h"
48
fe4da5cc 49ClassImp(AliTPCv1)
50
51//_____________________________________________________________________________
52AliTPCv1::AliTPCv1(const char *name, const char *title)
53 :AliTPC(name, title) {
54 //
55 // Standard constructor for Time Projection Chamber
56 //
57 fIdSens1=fIdSens2=0;
58}
59
60//_____________________________________________________________________________
61void AliTPCv1::CreateGeometry()
62{
63 //
64 // Creates geometry for Time Projection Chamber version 1
65 // Detailed geometry -- Fast simulation
66 // Origin M.Kowalski
67 //
68 //Begin_Html
69 /*
1439f98e 70 <img src="picts/AliTPCv1.gif">
fe4da5cc 71 */
72 //End_Html
73 //Begin_Html
74 /*
1439f98e 75 <img src="picts/AliTPCv1Tree.gif">
fe4da5cc 76 */
77 //End_Html
78
1283eee5 79 AliTPCParam * fTPCParam = &(fDigParam->GetParam());
8c555625 80
1283eee5 81 Int_t *idtmed = fIdtmed->GetArray();
8c555625 82
1283eee5 83 Float_t dm[21];
62a73ee5 84 Int_t idrotm[120];
1283eee5 85
86 Int_t nRotMat = 0;
87
88
fe4da5cc 89 // ----------------------------------------------------
1283eee5 90 // FIELD CAGE WITH ENDCAPS - G10
fe4da5cc 91 // THIS IS ALSO A TPC MOTHER VOLUME
92 // ----------------------------------------------------
1283eee5 93
fe4da5cc 94 dm[0] = 76.;
95 dm[1] = 278.;
96 dm[2] = 275.;
1283eee5 97
98 gMC->Gsvolu("TPC ", "TUBE", idtmed[8], dm, 3);
99
100 //-----------------------------------------------------
101 // Endcap cover c-fibre 0.86% X0
102 //-----------------------------------------------------
103
104 dm[0] = 78.;
105 dm[1] = 258.;
106 dm[2] = 0.95;
107
108 gMC->Gsvolu("TPEC","TUBE",idtmed[10],dm,3);
109
110 //-----------------------------------------------------
111 // Drift gas , leave 2 cm at the outer radius
112 // and inner raddius
113 //-----------------------------------------------------
114
115 dm[0] = 78.;
116 dm[1] = 258.;
fe4da5cc 117 dm[2] = 250.;
fe4da5cc 118
1283eee5 119 gMC->Gsvolu("TGAS", "TUBE", idtmed[3], dm, 3);
120
121
122 //------------------------------------------------------
123 // membrane holder - carbon fiber
124 //------------------------------------------------------
125
126
127 gMC->Gsvolu("TPMH","TUBE",idtmed[6],dm,0);
128
129 dm[0] = 252.;
130 dm[1] = 258.;
131 dm[2] = 0.2;
132
133 gMC->Gsposp("TPMH",1,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
134
135 dm[0] = 78.;
136 dm[2] = 82.;
137 dm[2] = 0.1;
138
139 gMC->Gsposp("TPMH",2,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
140
141 //----------------------------------------------------------
142 // HV membrane - 25 microns of mylar
143 //----------------------------------------------------------
144
145 dm[0] = 82.;
146 dm[1] = 252.;
147 dm[2] = 0.00125;
148
149 gMC->Gsvolu("TPHV","TUBE",idtmed[5],dm,3);
150
151 gMC->Gspos("TPHV",1,"TGAS",0.,0.,0.,0,"ONLY");
152
153 gMC->Gspos("TGAS",1,"TPC ",0.,0.,0.,0,"ONLY");
154
155 //----------------------------------------------------------
156 // "side" gas volume, the same as the drift gas
157 // the readout chambers are placed there.
158 //----------------------------------------------------------
159
160 dm[0] = 78.;
161 dm[1] = 258.;
162 dm[2] = 0.5*(275. - 250.);
163
164 gMC->Gsvolu("TPSG", "TUBE", idtmed[2], dm, 3);
165
166 Float_t z_side = dm[2]; // 1/2 of the side gas thickness
167
168 //-----------------------------------------------------------
169 // Readout chambers , 25% of X0, I use Al as the material
170 //-----------------------------------------------------------
171
172 Float_t InnerOpenAngle = fTPCParam->GetInnerAngle();
173 Float_t OuterOpenAngle = fTPCParam->GetOuterAngle();
174
175 Float_t InnerAngleShift = fTPCParam->GetInnerAngleShift();
176 Float_t OuterAngleShift = fTPCParam->GetOuterAngleShift();
177
178
179 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
180 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
181
182
183 Float_t InSecLowEdge = fTPCParam->GetInSecLowEdge();
184 Float_t InSecUpEdge = fTPCParam->GetInSecUpEdge();
185
186 Float_t OuSecLowEdge = fTPCParam->GetOuSecLowEdge();
187 Float_t OuSecUpEdge = fTPCParam->GetOuSecUpEdge();
188
189 Float_t SecThick = 2.225; // Al
190
191 Float_t edge = fTPCParam->GetEdge();
192
193 // S (Inner) sectors
194
195 dm[0] = InSecLowEdge*TMath::Tan(0.5*InnerOpenAngle)-edge;
196 dm[1] = InSecUpEdge*TMath::Tan(0.5*InnerOpenAngle)-edge;
197 dm[2] = 0.5*SecThick;
198 dm[3] = 0.5*(InSecUpEdge-InSecLowEdge);
199
200 Float_t xCenterS = InSecLowEdge+dm[3];
201
202 gMC->Gsvolu("TRCS", "TRD1", idtmed[0], dm, 4);
203
204 // L (Outer) sectors
205
206 dm[0] = OuSecLowEdge*TMath::Tan(0.5*OuterOpenAngle)-edge;
207 dm[1] = OuSecUpEdge*TMath::Tan(0.5*OuterOpenAngle)-edge;
208 dm[2] = 0.5*SecThick;
209 dm[3] = 0.5*(OuSecUpEdge-OuSecLowEdge);
210
211 Float_t xCenterL = OuSecLowEdge+dm[3];
212
213 gMC->Gsvolu("TRCL", "TRD1", idtmed[0], dm, 4);
214
215 Float_t z1 = -z_side + SecThick*0.5;
216
217 //------------------------------------------------------------------
218 // S sectors - "gas sectors" (TRD1)
219 //------------------------------------------------------------------
220
221 dm[0] = InSecLowEdge*TMath::Tan(0.5*InnerOpenAngle)-0.01;
222 dm[1] = InSecUpEdge*TMath::Tan(0.5*InnerOpenAngle)-0.01;
223 dm[2] = 0.5*(250. - 0.001);
224 dm[3] = 0.5*(InSecUpEdge-InSecLowEdge);
225
226 gMC->Gsvolu("TSGA", "TRD1", idtmed[3], dm, 4); // nonsensitive
227
228 //------------------------------------------------------------------
229 // sensitive strips - "pad rows"
230 //------------------------------------------------------------------
231
232 Int_t ns;
233 Float_t r1,r2,zz;
234
235 Float_t StripThick = 0.01; // 100 microns
236 Float_t dead = fTPCParam->GetDeadZone();
237
238 gMC->Gsvolu("TSST", "TRD1", idtmed[4], dm, 0);
239
240 dm[2] = 0.5*(250. - 0.002);
241 dm[3] = 0.5 * StripThick;
242
8c555625 243
1283eee5 244 // S-sector
8c555625 245
1283eee5 246 for (ns = 0; ns < fTPCParam->GetNRowLow(); ns++) {
247
248 r1 = fTPCParam->GetPadRowRadiiLow(ns);
249 r2 = r1 + StripThick;
250 dm[0] = r1 * TMath::Tan(0.5*InnerOpenAngle) - dead;
251 dm[1] = r2 * TMath::Tan(0.5*InnerOpenAngle) - dead;
252
253 zz = -InSecLowEdge -0.5*(InSecUpEdge-InSecLowEdge);
254 zz += r1;
255 zz += dm[3];
256
257 gMC->Gsposp("TSST", ns+1, "TSGA", 0., 0., zz, 0, "ONLY", dm, 4);
258
8c555625 259
fe4da5cc 260 }
8c555625 261
1283eee5 262 //-----------------------------------------------------------------
263 // L sectors - "gas sectors" (PGON to avoid overlaps)
264 //-----------------------------------------------------------------
265
266 dm[0] = 360.*kDegrad - 0.5*OuterOpenAngle;
267 dm[0] *= kRaddeg;
268 dm[0] = (Float_t)TMath::Nint(dm[0]);
269
270 dm[1] = OuterOpenAngle*kRaddeg;
271 dm[1] = (Float_t)TMath::Nint(dm[1]);
272
273 dm[2] = 1.;
274 dm[3] = 4.;
275
276 dm[4] = 0.002;
277 dm[5] = OuSecLowEdge;
278 dm[6] = 252.*TMath::Cos(0.5*OuterOpenAngle)-0.002;
279
280 dm[7] = dm[4]+0.2;
281 dm[8] = dm[5];
282 dm[9] = dm[6];
283
284 dm[10] = dm[7];
285 dm[11] = OuSecLowEdge;
286 dm[12] = OuSecUpEdge;
287
288 dm[13] = 250.;
289 dm[14] = dm[11];
290 dm[15] = dm[12];
291
292 gMC->Gsvolu("TLGA","PGON",idtmed[3],dm,16);
293
294 //------------------------------------------------------------------
295 // sensitive strips - "pad rows"
296 //------------------------------------------------------------------
297
298 Float_t rmax = dm[6];
299
300 // L-sectors
301
302 gMC->Gsvolu("TLST", "PGON", idtmed[4], dm, 0);
303
304 dm[0] = 360.*kDegrad - 0.5*OuterOpenAngle;
305 dm[0] *= kRaddeg;
306 dm[0] = (Float_t)TMath::Nint(dm[0]);
307
308 dm[1] = OuterOpenAngle*kRaddeg;
309 dm[1] = (Float_t)TMath::Nint(dm[1]);
310
311 dm[2] = 1.;
312 dm[3] = 2.;
313
314 dm[7] = 250.;
315
316 Float_t xx = dead/TMath::Tan(0.5*OuterOpenAngle);
317
318 for(ns=0;ns<fTPCParam->GetNRowUp();ns++){
319
320 r1 = fTPCParam->GetPadRowRadiiUp(ns)-xx;
321 r2 = r1 + StripThick;
8c555625 322
1283eee5 323 dm[5] = r1;
324 dm[6] = r2;
325
326 dm[8] = r1;
327 dm[9] = r2;
328
329 if(r2+xx < rmax){
330 dm[4] = 0.002;
331 }
332 else{
333 dm[4] = 0.202;
334 }
335
336 gMC->Gsposp("TLST",ns+1,"TLGA",xx,0.,0.,0,"ONLY",dm,10);
8c555625 337
fe4da5cc 338 }
fe4da5cc 339
1283eee5 340 //------------------------------------------------------------------
341 // Positioning of the S-sector readout chambers
342 //------------------------------------------------------------------
343
344 Float_t zs = 0.5*(250.+0.002);
345
346 Float_t theta1,theta2,theta3;
347 Float_t phi1,phi2,phi3;
348 Float_t alpha;
349 Float_t x,y;
350
351 for(ns=0;ns<nInnerSector;ns++){
352
353 phi1 = ns * InnerOpenAngle + 270.*kDegrad + InnerAngleShift;
354 phi1 *= kRaddeg; // in degrees
355
356 phi1 = (Float_t)TMath::Nint(phi1);
357
358 if (phi1 > 360.) phi1 -= 360.;
62a73ee5 359
1283eee5 360
fe4da5cc 361 theta1 = 90.;
362 phi2 = 90.;
363 theta2 = 180.;
1283eee5 364 phi3 = ns * InnerOpenAngle + InnerAngleShift;
365 phi3 *= kRaddeg; // in degrees
366
367 phi3 = (Float_t)TMath::Nint(phi3);
368
369 if(phi3 > 360.) phi3 -= 360.;
370
fe4da5cc 371 theta3 = 90.;
1283eee5 372
373 alpha = phi3*kDegrad;
374
375 x = xCenterS * TMath::Cos(alpha);
376 y = xCenterS * TMath::Sin(alpha);
377
378 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
379
380 gMC->Gspos("TRCS", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
381
382 gMC->Gspos("TSGA",ns+1,"TGAS",x,y,zs,idrotm[nRotMat], "ONLY");
383 gMC->Gspos("TSGA",ns+1+nInnerSector,"TGAS",x,y,-zs,idrotm[nRotMat], "ONLY");
384
385 nRotMat++;
386
387 }
fe4da5cc 388
1283eee5 389 //-------------------------------------------------------------------
390 // Positioning of the L-sectors readout chambers
391 //-------------------------------------------------------------------
fe4da5cc 392
1283eee5 393 for(ns=0;ns<nOuterSector;ns++){
394 phi1 = ns * OuterOpenAngle + 270.*kDegrad + OuterAngleShift;
395 phi1 *= kRaddeg; // in degrees
fe4da5cc 396
1283eee5 397 phi1 = (Float_t)TMath::Nint(phi1);
fe4da5cc 398
1283eee5 399
400 if (phi1 > 360.) phi1 -= 360.;
401
fe4da5cc 402 theta1 = 90.;
403 phi2 = 90.;
404 theta2 = 180.;
1283eee5 405 phi3 = ns * OuterOpenAngle+OuterAngleShift;
406 phi3 *= kRaddeg; // in degrees
407
408 phi3 = (Float_t)TMath::Nint(phi3);
409
410
411 if(phi3 > 360.) phi3 -= 360.;
412
fe4da5cc 413 theta3 = 90.;
1283eee5 414
415 alpha = phi3*kDegrad;
416
417 x = xCenterL * TMath::Cos(alpha);
418 y = xCenterL * TMath::Sin(alpha);
419
420 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
421
422
423 gMC->Gspos("TRCL", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
424
425 nRotMat++;
426
fe4da5cc 427 }
fe4da5cc 428
1283eee5 429 //-------------------------------------------------------------------
430 // Positioning of the L-sectors (gas sectors)
431 //-------------------------------------------------------------------
432
433 for(ns=0;ns<nOuterSector;ns++){
434
435 phi1 = ns*OuterOpenAngle + OuterAngleShift;
436 phi1 *= kRaddeg;
437
438 phi1 = (Float_t)TMath::Nint(phi1);
439 if(phi1>360.) phi1 -= 360.;
440
441 theta1 = 90.;
442
443 phi2 = 90. + phi1;
444 if(phi2>360.) phi2 -= 360.;
445
446 theta2 = 90.;
447
448 phi3 = 0.;
449 theta3 = 0.;
450
451 alpha = phi1*kDegrad;
452
453
454 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
455
456
457 gMC->Gspos("TLGA",ns+1,"TGAS" ,0.,0.,0.,idrotm[nRotMat],"ONLY");
458
459 nRotMat++;
460
461 // reflection !!
462
463 phi3 = 0.;
464 theta3 = 180.;
465
466 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
467
468 gMC->Gspos("TLGA",ns+1+nOuterSector,"TGAS" ,0.,0.,0.,idrotm[nRotMat],"ONLY");
469
470 nRotMat++;
471 }
fe4da5cc 472
1283eee5 473 Float_t z0 = z_side - 0.95;
474
475 gMC->Gspos("TPEC",1,"TPSG",0.,0.,z0,0,"ONLY");
476
fe4da5cc 477 // ==========================================================
478 // wheels
479 // ==========================================================
1283eee5 480
481 //
482 // auxilary structures
483 //
484
485
486 gMC->Gsvolu("TPWI","TUBE",idtmed[24],dm,0); // "air"
487
fe4da5cc 488 // ----------------------------------------------------------
489 // Large wheel -> positioned in the TPC
490 // ----------------------------------------------------------
1283eee5 491
492
493 z0 = 263.5; // TPC length - 1/2 spoke wheel width
494
495 dm[0] = 258.;
fe4da5cc 496 dm[1] = 278.;
497 dm[2] = 11.5;
fe4da5cc 498
1283eee5 499 gMC->Gsvolu("TPWL", "TUBE", idtmed[0], dm, 3);
500
501 dm[0] = dm[0]+2.;
502 dm[1] = 278.;
503 dm[2] = dm[2]-2.;
504
505 gMC->Gsposp("TPWI",1,"TPWL",0.,0.,0.,0,"ONLY",dm,3);
506
507 gMC->Gspos("TPWL", 1, "TPC ", 0, 0, z0, 0, "ONLY");
508 gMC->Gspos("TPWL", 2, "TPC ", 0, 0, -z0, 0, "ONLY");
509
510 //
511 // Outer vessel + CO2 HV degrader
512 //
513
514 dm[0] = 260.;
515 dm[1] = 278.;
516 dm[2] = 252.;
517
518 gMC->Gsvolu("TPCO","TUBE",idtmed[12],dm,3);
519
520 dm[0] = 275.;
fe4da5cc 521 dm[1] = 278.;
fe4da5cc 522
1283eee5 523 gMC->Gsvolu("TPOV","TUBE",idtmed[10],dm,3);
524
525 gMC->Gspos("TPOV",1,"TPCO",0.,0.,0.,0,"ONLY");
526
527
528 // G10 plugs
529
530 dm[0] = 258.;
531 dm[1] = 260.;
532 dm[2] = 1.;
533
534 gMC->Gsvolu("TPG1","TUBE",idtmed[8],dm,3);
535 gMC->Gspos("TPG1",1,"TPCO",0.,0.,251.,0,"ONLY");
536 gMC->Gspos("TPG1",2,"TPCO",0.,0.,-251.,0,"ONLY");
537
538 gMC->Gspos("TPCO",1,"TPC ",0.,0.,0.,0,"ONLY");
539
540
541 //----------------------------------------------------------
542 // Small wheel -> positioned in "side gas
543 //----------------------------------------------------------
544
545 dm[0] = 78.;
fe4da5cc 546 dm[1] = 82.;
547 dm[2] = 11.5;
1283eee5 548
549 gMC->Gsvolu("TPWS", "TUBE", idtmed[0], dm, 3);
550
551 dm[0] = 78.;
552 dm[1] = dm[1]-2;
553 dm[2] = dm[2]-2.;
554
555 gMC->Gsvolu("TPW1", "TUBE", idtmed[2], dm, 3);
fe4da5cc 556
1283eee5 557 gMC->Gspos("TPW1", 1, "TPWS", 0., 0., 0., 0, "ONLY");
558
559 z0 = 1.; // spoke wheel is shifted w.r.t. center of the "side gas"
560
561 gMC->Gspos("TPWS", 1, "TPSG", 0, 0, z0, 0, "ONLY");
562
563
564 // to avoid overlaps
565
566 dm[0] = 76.;
567 dm[1] = 78.;
568 dm[2] = 11.5;
569
570 gMC->Gsvolu("TPS1","TUBE",idtmed[0],dm,3);
571
fe4da5cc 572 dm[2] = 9.5;
1283eee5 573
574 gMC->Gsvolu("TPS2","TUBE",idtmed[24],dm,3);
575
576 gMC->Gspos("TPS2",1,"TPS1",0.,0.,0.,0,"ONLY");
577
578 z0= 263.5;
fe4da5cc 579
1283eee5 580 gMC->Gspos("TPS1",1,"TPC ",0.,0.,z0,0,"ONLY");
581 gMC->Gspos("TPS1",2,"TPC ",0.,0.,-z0,0,"ONLY");
582
583 // G10 plug
584
585 dm[0] = 76.;
7d7bb9e5 586 dm[1] = 78.;
587 dm[2] = 1.;
1283eee5 588
589 gMC->Gsvolu("TPG2","TUBE",idtmed[8],dm,3);
590
591 z0 = 251.;
592
593 gMC->Gspos("TPG2",1,"TPC ",0.,0.,z0,0,"ONLY");
594 gMC->Gspos("TPG2",2,"TPC ",0.,0.,-z0,0,"ONLY");
595
596
597 //---------------------------------------------------------
598 // central wheel 6 (radial direction) x 4 (along z) cm2
599 //---------------------------------------------------------
600
601 dm[0] = 140.;
602 dm[1] = 146.;
fe4da5cc 603 dm[2] = 2.;
1283eee5 604
605 gMC->Gsvolu("TPWC","TUBE",idtmed[0],dm,3);
606
607 dm[0] = dm[0] + 2.;
608 dm[1] = dm[1] - 2.;
609 dm[2] = dm[2] - 1.;
610
611 gMC->Gsposp("TPWI",2,"TPWC",0.,0.,0.,0,"ONLY",dm,3);
612
613 z0 = z_side - 1.9 - 2.;
614
615 gMC->Gspos("TPWC",1,"TPSG",0.,0.,z0,0,"ONLY");
616
617 //
618
619 gMC->Gsvolu("TPSE","BOX ",idtmed[24],dm,0); // "empty" part of the spoke
620
621
622 //---------------------------------------------------------
623 // inner spokes (nSectorInner)
624 //---------------------------------------------------------
625
626 dm[0] = 0.5*(139.9-82.1);
fe4da5cc 627 dm[1] = 3.;
628 dm[2] = 2.;
1283eee5 629
630 Float_t x1 = dm[0]+82.;
631
632 gMC->Gsvolu("TPSI","BOX",idtmed[0],dm,3);
633
634 dm[1] = dm[1]-1.;
635 dm[2] = dm[2]-1.;
636
637 gMC->Gsposp("TPSE",1,"TPSI",0.,0.,0.,0,"ONLY",dm,3);
638
639 for(ns=0;ns<nInnerSector;ns++){
640
641 phi1 = 0.5*InnerOpenAngle + ns*InnerOpenAngle + InnerAngleShift;
642 theta1=90.;
643 phi1 *=kRaddeg;
644
645 phi1 = (Float_t)TMath::Nint(phi1);
646 if(phi1>360.) phi1 -= 360.;
647
648 phi2 = phi1+90.;
649 if(phi2>360.) phi2 -= 360.;
650 theta2=90.;
651 phi3=0.;
652 theta3=0.;
653
fe4da5cc 654 alpha = phi1 * kDegrad;
655 x = x1 * TMath::Cos(alpha);
1283eee5 656 y = x1 * TMath::Sin(alpha);
657
658 AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
659
660 gMC->Gspos("TPSI",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");
661
662 nRotMat++;
663
fe4da5cc 664 }
1283eee5 665
666 //-------------------------------------------------------------
667 // outer spokes (nSectorOuter)
668 //-------------------------------------------------------------
669
670 dm[0] = 0.5*(257.9-146.1);
671 dm[1] = 3.;
672 dm[2] = 2.;
673
674 x1 = dm[0] + 146.;
675
676 gMC->Gsvolu("TPSO","BOX ",idtmed[0],dm,3);
677
678 dm[1] = dm[1] - 1.;
679 dm[2] = dm[2] - 1.;
680
681 gMC->Gsposp("TPSE",2,"TPSO",0.,0.,0.,0,"ONLY",dm,3);
682
683 for(ns=0;ns<nOuterSector;ns++){
684
685 phi1 = 0.5*OuterOpenAngle + ns*OuterOpenAngle + OuterAngleShift;
686 theta1=90.;
687 phi1 *=kRaddeg;
688
689 phi1 = (Float_t)TMath::Nint(phi1);
690 if(phi1>360.) phi1 -= 360.;
691
692 phi2 = phi1+90.;
693 if(phi2>360.) phi2 -= 360.;
694 theta2=90.;
695 phi3=0.;
696 theta3=0.;
697
fe4da5cc 698 alpha = phi1 * kDegrad;
1283eee5 699 x = x1 * TMath::Cos(alpha);
700 y = x1 * TMath::Sin(alpha);
701
702 AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
703
704 gMC->Gspos("TPSO",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");
705
706 nRotMat++;
707
708 }
fe4da5cc 709
1283eee5 710
fe4da5cc 711
fe4da5cc 712 // --------------------------------------------------------
713 // put the readout chambers into the TPC
714 // --------------------------------------------------------
1283eee5 715
fe4da5cc 716 theta1 = 90.;
717 phi1 = 0.;
718 theta2 = 90.;
719 phi2 = 270.;
720 theta3 = 180.;
721 phi3 = 0.;
722
1283eee5 723 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
fe4da5cc 724
725 z0 = z_side + 250.;
726
cfce8870 727 gMC->Gspos("TPSG", 1, "TPC ", 0, 0, z0, 0, "ONLY");
1283eee5 728 gMC->Gspos("TPSG", 2, "TPC ", 0, 0, -z0, idrotm[nRotMat], "ONLY");
fe4da5cc 729
cfce8870 730 gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
fe4da5cc 731
1283eee5 732 //----------------------------------------------------
733 // Inner vessel and HV degrader
734 //----------------------------------------------------
fe4da5cc 735
fe4da5cc 736 dm[0] = 0.;
737 dm[1] = 360.;
738 dm[2] = 4.;
739
740 dm[3] = -250.;
1283eee5 741 dm[4] = 74.4;
fe4da5cc 742 dm[5] = 76.;
1283eee5 743
fe4da5cc 744 dm[6] = -64.5;
745 dm[7] = 50.;
746 dm[8] = 76.;
1283eee5 747
748 dm[9] = -64.5;
fe4da5cc 749 dm[10] = 50.;
750 dm[11] = 76.;
1283eee5 751
fe4da5cc 752 dm[12] = 250.;
1283eee5 753 dm[13] = 74.4;
fe4da5cc 754 dm[14] = 76.;
1283eee5 755
756 gMC->Gsvolu("TPVD", "PCON", idtmed[12], dm, 15); // CO2
757
758 // cone parts
fe4da5cc 759
760 dm[0] = 0.;
761 dm[1] = 360.;
1283eee5 762 dm[2] = 2.;
763
764 dm[3] = 64.5;
765 dm[4] = 50.;
766 dm[5] = 51.6;
767
768 dm[6] = 250.;
769 dm[7] = 74.4;
770 dm[8] = 76.;
771
772
773 gMC->Gsvolu("TIVC","PCON",idtmed[11],dm,9); // C-fibre
774
775 gMC->Gspos("TIVC",1,"TPVD",0.,0.,0.,0,"ONLY");
776 gMC->Gspos("TIVC",2,"TPVD",0.,0.,0.,idrotm[nRotMat],"ONLY");
777
778 // barrel part
779
780 dm[0] = 50.;
781 dm[1] = 50.5;
782 dm[2] = 32.25;
783
784 gMC->Gsvolu("TIVB","TUBE",idtmed[9],dm,3);
785
786 gMC->Gspos("TIVB",1,"TPVD",0.,0.,0.,0,"ONLY");
787
788 gMC->Gspos("TPVD",1,"ALIC",0.,0.,0.,0,"ONLY");
789
fe4da5cc 790
1283eee5 791
fe4da5cc 792
1283eee5 793
fe4da5cc 794 // ---------------------------------------------------
795 // volumes ordering
796 // ---------------------------------------------------
cfce8870 797 gMC->Gsord("TGAS", 6);
798 gMC->Gsord("TPSG", 6);
799 gMC->Gsord("TSGA", 3);
8022212f 800 gMC->Gsord("TLGA", 4);
1283eee5 801
802} // end of function
803
fe4da5cc 804
805//_____________________________________________________________________________
8c555625 806void AliTPCv1::DrawDetector()
fe4da5cc 807{
808 //
809 // Draw a shaded view of the Time Projection Chamber version 1
810 //
811
fe4da5cc 812 // Set everything unseen
cfce8870 813 gMC->Gsatt("*", "seen", -1);
fe4da5cc 814 //
815 // Set ALIC mother transparent
cfce8870 816 gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc 817 //
818 // Set the volumes visible
cfce8870 819 gMC->Gsatt("TPC","SEEN",0);
820 gMC->Gsatt("TGAS","SEEN",0);
821 gMC->Gsatt("TPSG","SEEN",0);
822 gMC->Gsatt("TPHV","SEEN",1);
1283eee5 823 gMC->Gsatt("TPMH","SEEN",1);
824 gMC->Gsatt("TPEC","SEEN",0);
cfce8870 825 gMC->Gsatt("TRCS","SEEN",1);
826 gMC->Gsatt("TRCL","SEEN",1);
1283eee5 827 gMC->Gsatt("TPWL","SEEN",1);
828 gMC->Gsatt("TPWI","SEEN",1);
829 gMC->Gsatt("TPWS","SEEN",1);
cfce8870 830 gMC->Gsatt("TPW1","SEEN",1);
1283eee5 831 gMC->Gsatt("TPS1","SEEN",1);
832 gMC->Gsatt("TPS2","SEEN",1);
833 gMC->Gsatt("TPG1","SEEN",1);
834 gMC->Gsatt("TPG2","SEEN",1);
835 gMC->Gsatt("TPWC","SEEN",1);
836 gMC->Gsatt("TPSI","SEEN",1);
837 gMC->Gsatt("TPSO","SEEN",1);
838 gMC->Gsatt("TPCO","SEEN",1);
839 gMC->Gsatt("TPOV","SEEN",1);
cfce8870 840 gMC->Gsatt("TPVD","SEEN",1);
fe4da5cc 841 //
cfce8870 842 gMC->Gdopt("hide", "on");
843 gMC->Gdopt("shad", "on");
844 gMC->Gsatt("*", "fill", 7);
845 gMC->SetClipBox(".");
846 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
847 gMC->DefaultRange();
848 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
849 gMC->Gdhead(1111, "Time Projection Chamber");
850 gMC->Gdman(18, 4, "MAN");
851 gMC->Gdopt("hide","off");
fe4da5cc 852}
853
854//_____________________________________________________________________________
855void AliTPCv1::CreateMaterials()
856{
857 //
858 // Define materials for Time Projection Chamber
859 //
860 AliTPC::CreateMaterials();
861}
862
863//_____________________________________________________________________________
864void AliTPCv1::Init()
865{
866 //
867 // Initialises TPC detector after it has been created
868 //
cfce8870 869
1283eee5 870 fIdSens1=gMC->VolId("TLST"); // L-sector
871 fIdSens2=gMC->VolId("TSST"); // S-sector
fe4da5cc 872
873 printf("TPC version 1 initialized\n");
874}
875
876//_____________________________________________________________________________
877void AliTPCv1::StepManager()
878{
879 //
880 // Called at every step in the Time Projection Chamber
881 //
0a6d8768 882 Int_t copy, id, i;
fe4da5cc 883 Float_t hits[4];
884 Int_t vol[2];
0a6d8768 885 TLorentzVector p;
fe4da5cc 886 TClonesArray &lhits = *fHits;
cfce8870 887
1283eee5 888 AliTPCParam *fTPCParam = &(fDigParam->GetParam());
889
fe4da5cc 890 //
1283eee5 891
0a6d8768 892 if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
fe4da5cc 893 //
894 // Only entering charged tracks
1283eee5 895 //
0a6d8768 896 if((id=gMC->CurrentVolID(copy))==fIdSens1) {
1283eee5 897
898 // L
899
900 vol[1]=copy-1; // row
0a6d8768 901 id=gMC->CurrentVolOffID(1,copy);
1283eee5 902 vol[0]=copy+fTPCParam->GetNInnerSector()-1; // sector
fe4da5cc 903 } else if(id==fIdSens2) {
1283eee5 904
905 // S
906
907 vol[1]=copy-1; // row
908 id=gMC->CurrentVolOffID(1,copy); // sector
909 vol[0]=copy-1;
fe4da5cc 910 } else return;
1283eee5 911
0a6d8768 912 gMC->TrackPosition(p);
913 for(i=0;i<3;++i) hits[i]=p[i];
fe4da5cc 914 hits[3]=0;
915 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
916 }
917}
1283eee5 918
919
920