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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$Log$
cc80f89e 18Revision 1.15.8.2 2000/04/10 08:29:48 kowal2
19
20Different pad geometry for different sectors
21Updated readouch chambers geometry
22
23Revision 1.15.8.1 2000/04/10 07:56:53 kowal2
24Not used anymore - removed
25
26Revision 1.15 1999/11/04 17:28:07 fca
27Correct barrel part of HV Degrader
28
a5371c42 29Revision 1.14 1999/10/08 06:27:23 fca
30Corrected bug in the HV degrader geometry, thanks to G.Tabary
31
d183a600 32Revision 1.13 1999/10/04 13:39:54 fca
33Correct array index problem
34
cdde5b1e 35Revision 1.12 1999/09/29 09:24:34 fca
36Introduction of the Copyright and cvs Log
37
4c039060 38*/
39
fe4da5cc 40///////////////////////////////////////////////////////////////////////////////
41// //
42// Time Projection Chamber version 1 -- detailed TPC and fast simulation //
43// //
44//Begin_Html
45/*
1439f98e 46<img src="picts/AliTPCv1Class.gif">
fe4da5cc 47*/
48//End_Html
49// //
50// //
51///////////////////////////////////////////////////////////////////////////////
52
53#include <TMath.h>
54#include <TGeometry.h>
55#include <TNode.h>
56#include <TBRIK.h>
57#include <TTUBE.h>
58#include "AliTPCv1.h"
59#include "AliRun.h"
60#include <iostream.h>
61#include <fstream.h>
62
63#include "AliMC.h"
64#include "AliConst.h"
65
8c555625 66#include "AliTPCParam.h"
cc80f89e 67#include "AliTPCDigitsArray.h"
8c555625 68
fe4da5cc 69ClassImp(AliTPCv1)
70
71//_____________________________________________________________________________
72AliTPCv1::AliTPCv1(const char *name, const char *title)
73 :AliTPC(name, title) {
74 //
75 // Standard constructor for Time Projection Chamber
76 //
77 fIdSens1=fIdSens2=0;
78}
79
80//_____________________________________________________________________________
81void AliTPCv1::CreateGeometry()
82{
83 //
84 // Creates geometry for Time Projection Chamber version 1
85 // Detailed geometry -- Fast simulation
86 // Origin M.Kowalski
87 //
88 //Begin_Html
89 /*
1439f98e 90 <img src="picts/AliTPCv1.gif">
fe4da5cc 91 */
92 //End_Html
93 //Begin_Html
94 /*
1439f98e 95 <img src="picts/AliTPCv1Tree.gif">
fe4da5cc 96 */
97 //End_Html
98
8c555625 99
1283eee5 100 Int_t *idtmed = fIdtmed->GetArray();
8c555625 101
1283eee5 102 Float_t dm[21];
62a73ee5 103 Int_t idrotm[120];
1283eee5 104
105 Int_t nRotMat = 0;
106
107
fe4da5cc 108 // ----------------------------------------------------
1283eee5 109 // FIELD CAGE WITH ENDCAPS - G10
fe4da5cc 110 // THIS IS ALSO A TPC MOTHER VOLUME
111 // ----------------------------------------------------
1283eee5 112
fe4da5cc 113 dm[0] = 76.;
114 dm[1] = 278.;
115 dm[2] = 275.;
1283eee5 116
117 gMC->Gsvolu("TPC ", "TUBE", idtmed[8], dm, 3);
118
119 //-----------------------------------------------------
120 // Endcap cover c-fibre 0.86% X0
121 //-----------------------------------------------------
122
123 dm[0] = 78.;
124 dm[1] = 258.;
125 dm[2] = 0.95;
126
127 gMC->Gsvolu("TPEC","TUBE",idtmed[10],dm,3);
128
129 //-----------------------------------------------------
130 // Drift gas , leave 2 cm at the outer radius
131 // and inner raddius
132 //-----------------------------------------------------
133
134 dm[0] = 78.;
135 dm[1] = 258.;
fe4da5cc 136 dm[2] = 250.;
fe4da5cc 137
1283eee5 138 gMC->Gsvolu("TGAS", "TUBE", idtmed[3], dm, 3);
139
140
141 //------------------------------------------------------
142 // membrane holder - carbon fiber
143 //------------------------------------------------------
144
145
146 gMC->Gsvolu("TPMH","TUBE",idtmed[6],dm,0);
147
148 dm[0] = 252.;
149 dm[1] = 258.;
150 dm[2] = 0.2;
151
152 gMC->Gsposp("TPMH",1,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
153
154 dm[0] = 78.;
cdde5b1e 155 dm[1] = 82.;
1283eee5 156 dm[2] = 0.1;
157
158 gMC->Gsposp("TPMH",2,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
159
160 //----------------------------------------------------------
161 // HV membrane - 25 microns of mylar
162 //----------------------------------------------------------
163
164 dm[0] = 82.;
165 dm[1] = 252.;
166 dm[2] = 0.00125;
167
168 gMC->Gsvolu("TPHV","TUBE",idtmed[5],dm,3);
169
170 gMC->Gspos("TPHV",1,"TGAS",0.,0.,0.,0,"ONLY");
171
172 gMC->Gspos("TGAS",1,"TPC ",0.,0.,0.,0,"ONLY");
173
174 //----------------------------------------------------------
175 // "side" gas volume, the same as the drift gas
176 // the readout chambers are placed there.
177 //----------------------------------------------------------
178
179 dm[0] = 78.;
180 dm[1] = 258.;
181 dm[2] = 0.5*(275. - 250.);
182
183 gMC->Gsvolu("TPSG", "TUBE", idtmed[2], dm, 3);
184
185 Float_t z_side = dm[2]; // 1/2 of the side gas thickness
186
187 //-----------------------------------------------------------
188 // Readout chambers , 25% of X0, I use Al as the material
189 //-----------------------------------------------------------
190
191 Float_t InnerOpenAngle = fTPCParam->GetInnerAngle();
192 Float_t OuterOpenAngle = fTPCParam->GetOuterAngle();
193
194 Float_t InnerAngleShift = fTPCParam->GetInnerAngleShift();
195 Float_t OuterAngleShift = fTPCParam->GetOuterAngleShift();
196
197
198 Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
199 Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
200
201
cc80f89e 202 Float_t InSecLowEdge = fTPCParam->GetInnerRadiusLow();
203 Float_t InSecUpEdge = fTPCParam->GetInnerRadiusUp();
1283eee5 204
cc80f89e 205 Float_t OuSecLowEdge = fTPCParam->GetOuterRadiusLow();
206 Float_t OuSecUpEdge = fTPCParam->GetOuterRadiusUp();
1283eee5 207
208 Float_t SecThick = 2.225; // Al
209
1283eee5 210 // S (Inner) sectors
211
cc80f89e 212 Float_t LowEdge = fTPCParam->GetInnerFrameSpace();
213
214 dm[0] = InSecLowEdge*TMath::Tan(0.5*InnerOpenAngle)-LowEdge;
215 dm[1] = InSecUpEdge*TMath::Tan(0.5*InnerOpenAngle)-LowEdge;
1283eee5 216 dm[2] = 0.5*SecThick;
217 dm[3] = 0.5*(InSecUpEdge-InSecLowEdge);
218
219 Float_t xCenterS = InSecLowEdge+dm[3];
220
221 gMC->Gsvolu("TRCS", "TRD1", idtmed[0], dm, 4);
222
223 // L (Outer) sectors
224
cc80f89e 225 Float_t UpEdge = fTPCParam->GetOuterFrameSpace();
226
227 dm[0] = OuSecLowEdge*TMath::Tan(0.5*OuterOpenAngle)-UpEdge;
228 dm[1] = OuSecUpEdge*TMath::Tan(0.5*OuterOpenAngle)-UpEdge;
1283eee5 229 dm[2] = 0.5*SecThick;
230 dm[3] = 0.5*(OuSecUpEdge-OuSecLowEdge);
231
232 Float_t xCenterL = OuSecLowEdge+dm[3];
233
234 gMC->Gsvolu("TRCL", "TRD1", idtmed[0], dm, 4);
235
236 Float_t z1 = -z_side + SecThick*0.5;
237
238 //------------------------------------------------------------------
239 // S sectors - "gas sectors" (TRD1)
240 //------------------------------------------------------------------
241
242 dm[0] = InSecLowEdge*TMath::Tan(0.5*InnerOpenAngle)-0.01;
243 dm[1] = InSecUpEdge*TMath::Tan(0.5*InnerOpenAngle)-0.01;
244 dm[2] = 0.5*(250. - 0.001);
245 dm[3] = 0.5*(InSecUpEdge-InSecLowEdge);
246
247 gMC->Gsvolu("TSGA", "TRD1", idtmed[3], dm, 4); // nonsensitive
248
249 //------------------------------------------------------------------
250 // sensitive strips - "pad rows"
251 //------------------------------------------------------------------
252
253 Int_t ns;
254 Float_t r1,r2,zz;
255
256 Float_t StripThick = 0.01; // 100 microns
cc80f89e 257 Float_t dead;
1283eee5 258
259 gMC->Gsvolu("TSST", "TRD1", idtmed[4], dm, 0);
260
261 dm[2] = 0.5*(250. - 0.002);
262 dm[3] = 0.5 * StripThick;
263
8c555625 264
1283eee5 265 // S-sector
8c555625 266
cc80f89e 267 dead = fTPCParam->GetInnerWireMount();
268
1283eee5 269 for (ns = 0; ns < fTPCParam->GetNRowLow(); ns++) {
270
271 r1 = fTPCParam->GetPadRowRadiiLow(ns);
272 r2 = r1 + StripThick;
273 dm[0] = r1 * TMath::Tan(0.5*InnerOpenAngle) - dead;
274 dm[1] = r2 * TMath::Tan(0.5*InnerOpenAngle) - dead;
275
276 zz = -InSecLowEdge -0.5*(InSecUpEdge-InSecLowEdge);
277 zz += r1;
278 zz += dm[3];
279
280 gMC->Gsposp("TSST", ns+1, "TSGA", 0., 0., zz, 0, "ONLY", dm, 4);
281
8c555625 282
fe4da5cc 283 }
8c555625 284
1283eee5 285 //-----------------------------------------------------------------
286 // L sectors - "gas sectors" (PGON to avoid overlaps)
287 //-----------------------------------------------------------------
288
289 dm[0] = 360.*kDegrad - 0.5*OuterOpenAngle;
290 dm[0] *= kRaddeg;
291 dm[0] = (Float_t)TMath::Nint(dm[0]);
292
293 dm[1] = OuterOpenAngle*kRaddeg;
294 dm[1] = (Float_t)TMath::Nint(dm[1]);
295
296 dm[2] = 1.;
297 dm[3] = 4.;
298
299 dm[4] = 0.002;
300 dm[5] = OuSecLowEdge;
301 dm[6] = 252.*TMath::Cos(0.5*OuterOpenAngle)-0.002;
302
303 dm[7] = dm[4]+0.2;
304 dm[8] = dm[5];
305 dm[9] = dm[6];
306
307 dm[10] = dm[7];
308 dm[11] = OuSecLowEdge;
309 dm[12] = OuSecUpEdge;
310
311 dm[13] = 250.;
312 dm[14] = dm[11];
313 dm[15] = dm[12];
314
315 gMC->Gsvolu("TLGA","PGON",idtmed[3],dm,16);
316
317 //------------------------------------------------------------------
318 // sensitive strips - "pad rows"
319 //------------------------------------------------------------------
320
321 Float_t rmax = dm[6];
322
323 // L-sectors
324
325 gMC->Gsvolu("TLST", "PGON", idtmed[4], dm, 0);
326
327 dm[0] = 360.*kDegrad - 0.5*OuterOpenAngle;
328 dm[0] *= kRaddeg;
329 dm[0] = (Float_t)TMath::Nint(dm[0]);
330
331 dm[1] = OuterOpenAngle*kRaddeg;
332 dm[1] = (Float_t)TMath::Nint(dm[1]);
333
334 dm[2] = 1.;
335 dm[3] = 2.;
336
337 dm[7] = 250.;
338
cc80f89e 339 dead = fTPCParam->GetOuterWireMount();
340
1283eee5 341 Float_t xx = dead/TMath::Tan(0.5*OuterOpenAngle);
342
343 for(ns=0;ns<fTPCParam->GetNRowUp();ns++){
344
345 r1 = fTPCParam->GetPadRowRadiiUp(ns)-xx;
346 r2 = r1 + StripThick;
8c555625 347
1283eee5 348 dm[5] = r1;
349 dm[6] = r2;
350
351 dm[8] = r1;
352 dm[9] = r2;
353
354 if(r2+xx < rmax){
355 dm[4] = 0.002;
356 }
357 else{
358 dm[4] = 0.202;
359 }
360
361 gMC->Gsposp("TLST",ns+1,"TLGA",xx,0.,0.,0,"ONLY",dm,10);
8c555625 362
fe4da5cc 363 }
fe4da5cc 364
1283eee5 365 //------------------------------------------------------------------
366 // Positioning of the S-sector readout chambers
367 //------------------------------------------------------------------
368
369 Float_t zs = 0.5*(250.+0.002);
370
371 Float_t theta1,theta2,theta3;
372 Float_t phi1,phi2,phi3;
373 Float_t alpha;
374 Float_t x,y;
375
376 for(ns=0;ns<nInnerSector;ns++){
377
378 phi1 = ns * InnerOpenAngle + 270.*kDegrad + InnerAngleShift;
379 phi1 *= kRaddeg; // in degrees
380
381 phi1 = (Float_t)TMath::Nint(phi1);
382
383 if (phi1 > 360.) phi1 -= 360.;
62a73ee5 384
1283eee5 385
fe4da5cc 386 theta1 = 90.;
387 phi2 = 90.;
388 theta2 = 180.;
1283eee5 389 phi3 = ns * InnerOpenAngle + InnerAngleShift;
390 phi3 *= kRaddeg; // in degrees
391
392 phi3 = (Float_t)TMath::Nint(phi3);
393
394 if(phi3 > 360.) phi3 -= 360.;
395
fe4da5cc 396 theta3 = 90.;
1283eee5 397
398 alpha = phi3*kDegrad;
399
400 x = xCenterS * TMath::Cos(alpha);
401 y = xCenterS * TMath::Sin(alpha);
402
403 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
404
405 gMC->Gspos("TRCS", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
406
407 gMC->Gspos("TSGA",ns+1,"TGAS",x,y,zs,idrotm[nRotMat], "ONLY");
408 gMC->Gspos("TSGA",ns+1+nInnerSector,"TGAS",x,y,-zs,idrotm[nRotMat], "ONLY");
409
410 nRotMat++;
411
412 }
fe4da5cc 413
1283eee5 414 //-------------------------------------------------------------------
415 // Positioning of the L-sectors readout chambers
416 //-------------------------------------------------------------------
fe4da5cc 417
1283eee5 418 for(ns=0;ns<nOuterSector;ns++){
419 phi1 = ns * OuterOpenAngle + 270.*kDegrad + OuterAngleShift;
420 phi1 *= kRaddeg; // in degrees
fe4da5cc 421
1283eee5 422 phi1 = (Float_t)TMath::Nint(phi1);
fe4da5cc 423
1283eee5 424
425 if (phi1 > 360.) phi1 -= 360.;
426
fe4da5cc 427 theta1 = 90.;
428 phi2 = 90.;
429 theta2 = 180.;
1283eee5 430 phi3 = ns * OuterOpenAngle+OuterAngleShift;
431 phi3 *= kRaddeg; // in degrees
432
433 phi3 = (Float_t)TMath::Nint(phi3);
434
435
436 if(phi3 > 360.) phi3 -= 360.;
437
fe4da5cc 438 theta3 = 90.;
1283eee5 439
440 alpha = phi3*kDegrad;
441
442 x = xCenterL * TMath::Cos(alpha);
443 y = xCenterL * TMath::Sin(alpha);
444
445 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
446
447
448 gMC->Gspos("TRCL", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
449
450 nRotMat++;
451
fe4da5cc 452 }
fe4da5cc 453
1283eee5 454 //-------------------------------------------------------------------
455 // Positioning of the L-sectors (gas sectors)
456 //-------------------------------------------------------------------
457
458 for(ns=0;ns<nOuterSector;ns++){
459
460 phi1 = ns*OuterOpenAngle + OuterAngleShift;
461 phi1 *= kRaddeg;
462
463 phi1 = (Float_t)TMath::Nint(phi1);
464 if(phi1>360.) phi1 -= 360.;
465
466 theta1 = 90.;
467
468 phi2 = 90. + phi1;
469 if(phi2>360.) phi2 -= 360.;
470
471 theta2 = 90.;
472
473 phi3 = 0.;
474 theta3 = 0.;
475
476 alpha = phi1*kDegrad;
477
478
479 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
480
481
482 gMC->Gspos("TLGA",ns+1,"TGAS" ,0.,0.,0.,idrotm[nRotMat],"ONLY");
483
484 nRotMat++;
485
486 // reflection !!
487
488 phi3 = 0.;
489 theta3 = 180.;
490
491 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
492
493 gMC->Gspos("TLGA",ns+1+nOuterSector,"TGAS" ,0.,0.,0.,idrotm[nRotMat],"ONLY");
494
495 nRotMat++;
496 }
fe4da5cc 497
1283eee5 498 Float_t z0 = z_side - 0.95;
499
500 gMC->Gspos("TPEC",1,"TPSG",0.,0.,z0,0,"ONLY");
501
fe4da5cc 502 // ==========================================================
503 // wheels
504 // ==========================================================
1283eee5 505
506 //
507 // auxilary structures
508 //
509
510
511 gMC->Gsvolu("TPWI","TUBE",idtmed[24],dm,0); // "air"
512
fe4da5cc 513 // ----------------------------------------------------------
514 // Large wheel -> positioned in the TPC
515 // ----------------------------------------------------------
1283eee5 516
517
518 z0 = 263.5; // TPC length - 1/2 spoke wheel width
519
520 dm[0] = 258.;
fe4da5cc 521 dm[1] = 278.;
522 dm[2] = 11.5;
fe4da5cc 523
1283eee5 524 gMC->Gsvolu("TPWL", "TUBE", idtmed[0], dm, 3);
525
526 dm[0] = dm[0]+2.;
527 dm[1] = 278.;
528 dm[2] = dm[2]-2.;
529
530 gMC->Gsposp("TPWI",1,"TPWL",0.,0.,0.,0,"ONLY",dm,3);
531
532 gMC->Gspos("TPWL", 1, "TPC ", 0, 0, z0, 0, "ONLY");
533 gMC->Gspos("TPWL", 2, "TPC ", 0, 0, -z0, 0, "ONLY");
534
535 //
536 // Outer vessel + CO2 HV degrader
537 //
538
539 dm[0] = 260.;
540 dm[1] = 278.;
541 dm[2] = 252.;
542
543 gMC->Gsvolu("TPCO","TUBE",idtmed[12],dm,3);
544
545 dm[0] = 275.;
fe4da5cc 546 dm[1] = 278.;
fe4da5cc 547
1283eee5 548 gMC->Gsvolu("TPOV","TUBE",idtmed[10],dm,3);
549
550 gMC->Gspos("TPOV",1,"TPCO",0.,0.,0.,0,"ONLY");
551
552
553 // G10 plugs
554
555 dm[0] = 258.;
556 dm[1] = 260.;
557 dm[2] = 1.;
558
559 gMC->Gsvolu("TPG1","TUBE",idtmed[8],dm,3);
560 gMC->Gspos("TPG1",1,"TPCO",0.,0.,251.,0,"ONLY");
561 gMC->Gspos("TPG1",2,"TPCO",0.,0.,-251.,0,"ONLY");
562
563 gMC->Gspos("TPCO",1,"TPC ",0.,0.,0.,0,"ONLY");
564
565
566 //----------------------------------------------------------
567 // Small wheel -> positioned in "side gas
568 //----------------------------------------------------------
569
570 dm[0] = 78.;
fe4da5cc 571 dm[1] = 82.;
572 dm[2] = 11.5;
1283eee5 573
574 gMC->Gsvolu("TPWS", "TUBE", idtmed[0], dm, 3);
575
576 dm[0] = 78.;
577 dm[1] = dm[1]-2;
578 dm[2] = dm[2]-2.;
579
580 gMC->Gsvolu("TPW1", "TUBE", idtmed[2], dm, 3);
fe4da5cc 581
1283eee5 582 gMC->Gspos("TPW1", 1, "TPWS", 0., 0., 0., 0, "ONLY");
583
584 z0 = 1.; // spoke wheel is shifted w.r.t. center of the "side gas"
585
586 gMC->Gspos("TPWS", 1, "TPSG", 0, 0, z0, 0, "ONLY");
587
588
589 // to avoid overlaps
590
591 dm[0] = 76.;
592 dm[1] = 78.;
593 dm[2] = 11.5;
594
595 gMC->Gsvolu("TPS1","TUBE",idtmed[0],dm,3);
596
fe4da5cc 597 dm[2] = 9.5;
1283eee5 598
599 gMC->Gsvolu("TPS2","TUBE",idtmed[24],dm,3);
600
601 gMC->Gspos("TPS2",1,"TPS1",0.,0.,0.,0,"ONLY");
602
603 z0= 263.5;
fe4da5cc 604
1283eee5 605 gMC->Gspos("TPS1",1,"TPC ",0.,0.,z0,0,"ONLY");
606 gMC->Gspos("TPS1",2,"TPC ",0.,0.,-z0,0,"ONLY");
607
608 // G10 plug
609
610 dm[0] = 76.;
7d7bb9e5 611 dm[1] = 78.;
612 dm[2] = 1.;
1283eee5 613
614 gMC->Gsvolu("TPG2","TUBE",idtmed[8],dm,3);
615
616 z0 = 251.;
617
618 gMC->Gspos("TPG2",1,"TPC ",0.,0.,z0,0,"ONLY");
619 gMC->Gspos("TPG2",2,"TPC ",0.,0.,-z0,0,"ONLY");
620
621
622 //---------------------------------------------------------
623 // central wheel 6 (radial direction) x 4 (along z) cm2
624 //---------------------------------------------------------
625
626 dm[0] = 140.;
627 dm[1] = 146.;
fe4da5cc 628 dm[2] = 2.;
1283eee5 629
630 gMC->Gsvolu("TPWC","TUBE",idtmed[0],dm,3);
631
632 dm[0] = dm[0] + 2.;
633 dm[1] = dm[1] - 2.;
634 dm[2] = dm[2] - 1.;
635
636 gMC->Gsposp("TPWI",2,"TPWC",0.,0.,0.,0,"ONLY",dm,3);
637
638 z0 = z_side - 1.9 - 2.;
639
640 gMC->Gspos("TPWC",1,"TPSG",0.,0.,z0,0,"ONLY");
641
642 //
643
644 gMC->Gsvolu("TPSE","BOX ",idtmed[24],dm,0); // "empty" part of the spoke
645
646
647 //---------------------------------------------------------
648 // inner spokes (nSectorInner)
649 //---------------------------------------------------------
650
651 dm[0] = 0.5*(139.9-82.1);
fe4da5cc 652 dm[1] = 3.;
653 dm[2] = 2.;
1283eee5 654
655 Float_t x1 = dm[0]+82.;
656
657 gMC->Gsvolu("TPSI","BOX",idtmed[0],dm,3);
658
659 dm[1] = dm[1]-1.;
660 dm[2] = dm[2]-1.;
661
662 gMC->Gsposp("TPSE",1,"TPSI",0.,0.,0.,0,"ONLY",dm,3);
663
664 for(ns=0;ns<nInnerSector;ns++){
665
666 phi1 = 0.5*InnerOpenAngle + ns*InnerOpenAngle + InnerAngleShift;
667 theta1=90.;
668 phi1 *=kRaddeg;
669
670 phi1 = (Float_t)TMath::Nint(phi1);
671 if(phi1>360.) phi1 -= 360.;
672
673 phi2 = phi1+90.;
674 if(phi2>360.) phi2 -= 360.;
675 theta2=90.;
676 phi3=0.;
677 theta3=0.;
678
fe4da5cc 679 alpha = phi1 * kDegrad;
680 x = x1 * TMath::Cos(alpha);
1283eee5 681 y = x1 * TMath::Sin(alpha);
682
683 AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
684
685 gMC->Gspos("TPSI",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");
686
687 nRotMat++;
688
fe4da5cc 689 }
1283eee5 690
691 //-------------------------------------------------------------
692 // outer spokes (nSectorOuter)
693 //-------------------------------------------------------------
694
695 dm[0] = 0.5*(257.9-146.1);
696 dm[1] = 3.;
697 dm[2] = 2.;
698
699 x1 = dm[0] + 146.;
700
701 gMC->Gsvolu("TPSO","BOX ",idtmed[0],dm,3);
702
703 dm[1] = dm[1] - 1.;
704 dm[2] = dm[2] - 1.;
705
706 gMC->Gsposp("TPSE",2,"TPSO",0.,0.,0.,0,"ONLY",dm,3);
707
708 for(ns=0;ns<nOuterSector;ns++){
709
710 phi1 = 0.5*OuterOpenAngle + ns*OuterOpenAngle + OuterAngleShift;
711 theta1=90.;
712 phi1 *=kRaddeg;
713
714 phi1 = (Float_t)TMath::Nint(phi1);
715 if(phi1>360.) phi1 -= 360.;
716
717 phi2 = phi1+90.;
718 if(phi2>360.) phi2 -= 360.;
719 theta2=90.;
720 phi3=0.;
721 theta3=0.;
722
fe4da5cc 723 alpha = phi1 * kDegrad;
1283eee5 724 x = x1 * TMath::Cos(alpha);
725 y = x1 * TMath::Sin(alpha);
726
727 AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
728
729 gMC->Gspos("TPSO",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");
730
731 nRotMat++;
732
733 }
fe4da5cc 734
1283eee5 735
fe4da5cc 736
fe4da5cc 737 // --------------------------------------------------------
738 // put the readout chambers into the TPC
739 // --------------------------------------------------------
1283eee5 740
fe4da5cc 741 theta1 = 90.;
742 phi1 = 0.;
743 theta2 = 90.;
744 phi2 = 270.;
745 theta3 = 180.;
746 phi3 = 0.;
747
1283eee5 748 AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
fe4da5cc 749
750 z0 = z_side + 250.;
751
cfce8870 752 gMC->Gspos("TPSG", 1, "TPC ", 0, 0, z0, 0, "ONLY");
1283eee5 753 gMC->Gspos("TPSG", 2, "TPC ", 0, 0, -z0, idrotm[nRotMat], "ONLY");
fe4da5cc 754
cfce8870 755 gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
fe4da5cc 756
1283eee5 757 //----------------------------------------------------
758 // Inner vessel and HV degrader
759 //----------------------------------------------------
fe4da5cc 760
fe4da5cc 761 dm[0] = 0.;
762 dm[1] = 360.;
763 dm[2] = 4.;
764
765 dm[3] = -250.;
1283eee5 766 dm[4] = 74.4;
fe4da5cc 767 dm[5] = 76.;
1283eee5 768
fe4da5cc 769 dm[6] = -64.5;
770 dm[7] = 50.;
771 dm[8] = 76.;
1283eee5 772
d183a600 773 dm[9] = 64.5;
fe4da5cc 774 dm[10] = 50.;
775 dm[11] = 76.;
1283eee5 776
fe4da5cc 777 dm[12] = 250.;
1283eee5 778 dm[13] = 74.4;
fe4da5cc 779 dm[14] = 76.;
1283eee5 780
781 gMC->Gsvolu("TPVD", "PCON", idtmed[12], dm, 15); // CO2
782
783 // cone parts
fe4da5cc 784
785 dm[0] = 0.;
786 dm[1] = 360.;
1283eee5 787 dm[2] = 2.;
788
789 dm[3] = 64.5;
790 dm[4] = 50.;
791 dm[5] = 51.6;
792
793 dm[6] = 250.;
794 dm[7] = 74.4;
795 dm[8] = 76.;
796
797
798 gMC->Gsvolu("TIVC","PCON",idtmed[11],dm,9); // C-fibre
799
800 gMC->Gspos("TIVC",1,"TPVD",0.,0.,0.,0,"ONLY");
801 gMC->Gspos("TIVC",2,"TPVD",0.,0.,0.,idrotm[nRotMat],"ONLY");
802
803 // barrel part
804
805 dm[0] = 50.;
806 dm[1] = 50.5;
a5371c42 807 dm[2] = 64.5;
1283eee5 808
809 gMC->Gsvolu("TIVB","TUBE",idtmed[9],dm,3);
810
811 gMC->Gspos("TIVB",1,"TPVD",0.,0.,0.,0,"ONLY");
812
813 gMC->Gspos("TPVD",1,"ALIC",0.,0.,0.,0,"ONLY");
814
fe4da5cc 815
1283eee5 816
fe4da5cc 817
1283eee5 818
fe4da5cc 819 // ---------------------------------------------------
820 // volumes ordering
821 // ---------------------------------------------------
cfce8870 822 gMC->Gsord("TGAS", 6);
823 gMC->Gsord("TPSG", 6);
824 gMC->Gsord("TSGA", 3);
8022212f 825 gMC->Gsord("TLGA", 4);
1283eee5 826
827} // end of function
828
fe4da5cc 829
830//_____________________________________________________________________________
8c555625 831void AliTPCv1::DrawDetector()
fe4da5cc 832{
833 //
834 // Draw a shaded view of the Time Projection Chamber version 1
835 //
836
fe4da5cc 837 // Set everything unseen
cfce8870 838 gMC->Gsatt("*", "seen", -1);
fe4da5cc 839 //
840 // Set ALIC mother transparent
cfce8870 841 gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc 842 //
843 // Set the volumes visible
cfce8870 844 gMC->Gsatt("TPC","SEEN",0);
845 gMC->Gsatt("TGAS","SEEN",0);
846 gMC->Gsatt("TPSG","SEEN",0);
847 gMC->Gsatt("TPHV","SEEN",1);
1283eee5 848 gMC->Gsatt("TPMH","SEEN",1);
849 gMC->Gsatt("TPEC","SEEN",0);
cfce8870 850 gMC->Gsatt("TRCS","SEEN",1);
851 gMC->Gsatt("TRCL","SEEN",1);
1283eee5 852 gMC->Gsatt("TPWL","SEEN",1);
853 gMC->Gsatt("TPWI","SEEN",1);
854 gMC->Gsatt("TPWS","SEEN",1);
cfce8870 855 gMC->Gsatt("TPW1","SEEN",1);
1283eee5 856 gMC->Gsatt("TPS1","SEEN",1);
857 gMC->Gsatt("TPS2","SEEN",1);
858 gMC->Gsatt("TPG1","SEEN",1);
859 gMC->Gsatt("TPG2","SEEN",1);
860 gMC->Gsatt("TPWC","SEEN",1);
861 gMC->Gsatt("TPSI","SEEN",1);
862 gMC->Gsatt("TPSO","SEEN",1);
863 gMC->Gsatt("TPCO","SEEN",1);
864 gMC->Gsatt("TPOV","SEEN",1);
cfce8870 865 gMC->Gsatt("TPVD","SEEN",1);
cc80f89e 866
cfce8870 867 gMC->Gdopt("hide", "on");
868 gMC->Gdopt("shad", "on");
869 gMC->Gsatt("*", "fill", 7);
870 gMC->SetClipBox(".");
871 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
872 gMC->DefaultRange();
873 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
874 gMC->Gdhead(1111, "Time Projection Chamber");
875 gMC->Gdman(18, 4, "MAN");
876 gMC->Gdopt("hide","off");
fe4da5cc 877}
878
879//_____________________________________________________________________________
880void AliTPCv1::CreateMaterials()
881{
882 //
883 // Define materials for Time Projection Chamber
884 //
885 AliTPC::CreateMaterials();
886}
887
888//_____________________________________________________________________________
889void AliTPCv1::Init()
890{
891 //
892 // Initialises TPC detector after it has been created
893 //
cfce8870 894
1283eee5 895 fIdSens1=gMC->VolId("TLST"); // L-sector
896 fIdSens2=gMC->VolId("TSST"); // S-sector
fe4da5cc 897
898 printf("TPC version 1 initialized\n");
899}
900
901//_____________________________________________________________________________
902void AliTPCv1::StepManager()
903{
904 //
905 // Called at every step in the Time Projection Chamber
906 //
0a6d8768 907 Int_t copy, id, i;
fe4da5cc 908 Float_t hits[4];
909 Int_t vol[2];
0a6d8768 910 TLorentzVector p;
fe4da5cc 911 TClonesArray &lhits = *fHits;
1283eee5 912
fe4da5cc 913 //
1283eee5 914
0a6d8768 915 if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
fe4da5cc 916 //
917 // Only entering charged tracks
1283eee5 918 //
0a6d8768 919 if((id=gMC->CurrentVolID(copy))==fIdSens1) {
1283eee5 920
921 // L
922
923 vol[1]=copy-1; // row
0a6d8768 924 id=gMC->CurrentVolOffID(1,copy);
1283eee5 925 vol[0]=copy+fTPCParam->GetNInnerSector()-1; // sector
cc80f89e 926
927 //I.Belikov's modification
928 if (vol[1]==0) {
929 gMC->TrackMomentum(p);
930 hits[0]=p[0];
931 hits[1]=p[1];
932 hits[2]=p[2];
933 hits[3]=0.; // this hit has no energy loss
934 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
935
936 gMC->TrackPosition(p);
937 hits[0]=p[0];
938 hits[1]=p[1];
939 hits[2]=p[2];
940 hits[3]=0.; // this hit has no energy loss
941 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
942 }
943 //end of I.Belikov's modification
fe4da5cc 944 } else if(id==fIdSens2) {
1283eee5 945
946 // S
947
948 vol[1]=copy-1; // row
949 id=gMC->CurrentVolOffID(1,copy); // sector
950 vol[0]=copy-1;
cc80f89e 951
952 //I.Belikov's modification
953 if (vol[1]==0) {
954 gMC->TrackMomentum(p);
955 hits[0]=p[0];
956 hits[1]=p[1];
957 hits[2]=p[2];
958 hits[3]=0.; // this hit has no energy loss
959 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
960
961 gMC->TrackPosition(p);
962 hits[0]=p[0];
963 hits[1]=p[1];
964 hits[2]=p[2];
965 hits[3]=0.; // this hit has no energy loss
966 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
967 }
968 //end of I.Belikov's modification
969
fe4da5cc 970 } else return;
1283eee5 971
0a6d8768 972 gMC->TrackPosition(p);
973 for(i=0;i<3;++i) hits[i]=p[i];
cc80f89e 974 hits[3]=1; //I'd like to have something positive here (I.Belikov)
fe4da5cc 975 new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
976 }
977}
1283eee5 978
979
980