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