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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 | $Log$ | |
cea9b4f7 | 18 | Revision 1.37 2001/04/27 15:23:07 kowal2 |
19 | Correct materian in the central part of the inner containment vessel | |
20 | ||
90222263 | 21 | Revision 1.36 2001/04/26 06:15:12 kowal2 |
22 | Corrected bug in the inner containment vessel (cones) | |
23 | ||
f4900c61 | 24 | Revision 1.35 2001/04/24 11:17:33 kowal2 |
25 | New TPC geometry. | |
26 | ||
79575d04 | 27 | Revision 1.34 2001/04/23 10:20:18 hristov |
28 | Constant casted to avoid ambiguity | |
29 | ||
07521998 | 30 | Revision 1.33 2001/04/20 08:16:47 kowal2 |
31 | Protection against too small betaGamma. Thanks to Ivana and Yves. | |
32 | ||
595bf2c3 | 33 | Revision 1.32 2001/03/13 13:07:34 kowal2 |
34 | Corrected bug in the TPC mother volume geometry. | |
35 | Thanks to A. Morsch | |
36 | ||
7ab50f40 | 37 | Revision 1.31 2000/11/30 11:48:50 kowal2 |
38 | TLorentzVector.h adde to satisfy the latest changes by Federico | |
39 | ||
a383b30d | 40 | Revision 1.30 2000/11/14 10:48:57 kowal2 |
41 | Correct material used for TSA4. Thanks to J. Barbosa. | |
42 | ||
2c668420 | 43 | Revision 1.29 2000/11/06 17:24:10 kowal2 |
44 | Corrected bug in the outer containment vessel and | |
45 | the outer field cage geometry. | |
46 | Thanks to J. Barbosa. | |
47 | ||
720b23b8 | 48 | Revision 1.28 2000/11/02 16:55:24 kowal2 |
49 | Corrected bug in the inner containment vessel geometry. | |
50 | Thanks to J. Belikov | |
51 | ||
08db548a | 52 | Revision 1.27 2000/11/02 07:24:11 kowal2 |
53 | Correction in the TPC geometry. | |
54 | Changes due to the new hit structure. | |
55 | ||
6a905708 | 56 | Revision 1.26 2000/10/05 16:16:29 kowal2 |
57 | Corrections of the hit recording algorithm. | |
58 | ||
d4c354b9 | 59 | Revision 1.25 2000/10/02 21:28:18 fca |
60 | Removal of useless dependecies via forward declarations | |
61 | ||
94de3818 | 62 | Revision 1.24 2000/08/28 10:02:30 kowal2 |
63 | Corrected bug in the StepManager | |
64 | ||
930ee558 | 65 | Revision 1.23 2000/07/10 20:57:39 hristov |
66 | Update of TPC code and macros by M.Kowalski | |
67 | ||
37831078 | 68 | Revision 1.22 2000/06/30 12:07:50 kowal2 |
69 | Updated from the TPC-PreRelease branch | |
70 | ||
73042f01 | 71 | Revision 1.21.2.4 2000/06/26 07:39:42 kowal2 |
72 | Changes to obey the coding rules | |
73 | ||
74 | Revision 1.21.2.3 2000/06/25 08:38:41 kowal2 | |
75 | Splitted from AliTPCtracking | |
76 | ||
77 | Revision 1.21.2.2 2000/06/16 12:58:13 kowal2 | |
78 | Changed parameter settings | |
79 | ||
80 | Revision 1.21.2.1 2000/06/09 07:15:07 kowal2 | |
81 | ||
82 | Defaults loaded automatically (hard-wired) | |
83 | Optional parameters can be set via macro called in the constructor | |
84 | ||
85 | Revision 1.21 2000/05/15 10:00:30 kowal2 | |
86 | Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova | |
87 | ||
e94dd9ca | 88 | Revision 1.20 2000/04/17 09:37:33 kowal2 |
89 | removed obsolete AliTPCDigitsDisplay.C | |
90 | ||
cc80f89e | 91 | Revision 1.19.8.2 2000/04/10 08:31:52 kowal2 |
92 | ||
93 | Different geometry for different sectors | |
94 | Updated readout chambers | |
95 | Some modifications to StepManager by J.Belikov | |
96 | ||
97 | Revision 1.19.8.1 2000/04/10 07:56:53 kowal2 | |
98 | Not used anymore - removed | |
99 | ||
100 | Revision 1.19 1999/11/04 17:28:07 fca | |
101 | Correct barrel part of HV Degrader | |
102 | ||
a5371c42 | 103 | Revision 1.18 1999/10/14 16:52:08 fca |
104 | Only use PDG codes and not GEANT ones | |
105 | ||
69e40cce | 106 | Revision 1.17 1999/10/08 06:27:23 fca |
107 | Corrected bug in the HV degrader geometry, thanks to G.Tabary | |
108 | ||
d183a600 | 109 | Revision 1.16 1999/10/04 13:39:54 fca |
110 | Correct array index problem | |
111 | ||
cdde5b1e | 112 | Revision 1.15 1999/09/29 09:24:34 fca |
113 | Introduction of the Copyright and cvs Log | |
114 | ||
4c039060 | 115 | */ |
116 | ||
73042f01 | 117 | // |
fe4da5cc | 118 | /////////////////////////////////////////////////////////////////////////////// |
119 | // // | |
120 | // Time Projection Chamber version 2 -- detailed TPC and slow simulation // | |
121 | // // | |
122 | //Begin_Html | |
123 | /* | |
1439f98e | 124 | <img src="picts/AliTPCv2Class.gif"> |
fe4da5cc | 125 | */ |
126 | //End_Html | |
127 | // // | |
128 | // // | |
129 | /////////////////////////////////////////////////////////////////////////////// | |
2a49965d | 130 | #include <stdlib.h> |
fe4da5cc | 131 | |
132 | #include <TMath.h> | |
bcac8ae4 | 133 | |
fe4da5cc | 134 | #include "AliTPCv2.h" |
cc80f89e | 135 | #include "AliTPCDigitsArray.h" |
fe4da5cc | 136 | #include "AliRun.h" |
94de3818 | 137 | #include "AliMC.h" |
fe4da5cc | 138 | #include "AliConst.h" |
69e40cce | 139 | #include "AliPDG.h" |
73042f01 | 140 | #include "AliTPCParam.h" |
141 | #include "AliTPCParamSR.h" | |
6a905708 | 142 | #include "AliTPCTrackHits.h" |
a383b30d | 143 | #include "TLorentzVector.h" |
6a905708 | 144 | |
8c555625 | 145 | |
fe4da5cc | 146 | ClassImp(AliTPCv2) |
147 | ||
148 | //_____________________________________________________________________________ | |
149 | AliTPCv2::AliTPCv2(const char *name, const char *title) : | |
150 | AliTPC(name, title) | |
151 | { | |
152 | // | |
153 | // Standard constructor for Time Projection Chamber version 2 | |
154 | // | |
37831078 | 155 | fIdSens=0; |
156 | fIdLSec=0; | |
157 | fIdUSec=0; | |
158 | ||
fe4da5cc | 159 | SetBufferSize(128000); |
73042f01 | 160 | |
161 | SetGasMixt(2,20,10,-1,0.9,0.1,0.); // Ne-CO2 90-10 | |
162 | ||
163 | // Default sectors | |
164 | ||
165 | SetSecAL(4); | |
166 | SetSecAU(4); | |
167 | SetSecLows(1, 2, 3, 19, 20, 21); | |
168 | SetSecUps(37, 38, 39, 37+18, 38+18, 39+18, -1, -1, -1, -1, -1, -1); | |
37831078 | 169 | SetSens(1); // sensitive strips set |
73042f01 | 170 | |
171 | if (fTPCParam) | |
172 | fTPCParam->Write(fTPCParam->GetTitle()); | |
fe4da5cc | 173 | } |
174 | ||
175 | //_____________________________________________________________________________ | |
176 | void AliTPCv2::CreateGeometry() | |
177 | { | |
178 | // | |
179 | // Create the geometry of Time Projection Chamber version 2 | |
180 | // | |
181 | //Begin_Html | |
182 | /* | |
37831078 | 183 | <img src="picts/AliTPC.gif"> |
fe4da5cc | 184 | */ |
185 | //End_Html | |
186 | //Begin_Html | |
187 | /* | |
1439f98e | 188 | <img src="picts/AliTPCv2Tree.gif"> |
fe4da5cc | 189 | */ |
190 | //End_Html | |
191 | ||
8c555625 | 192 | |
1283eee5 | 193 | Int_t *idtmed = fIdtmed->GetArray(); |
194 | ||
37831078 | 195 | Float_t dm[50]; |
62a73ee5 | 196 | Int_t idrotm[120]; |
1283eee5 | 197 | |
198 | Int_t nRotMat = 0; | |
199 | ||
d4c354b9 | 200 | Int_t i,ifl1=0; |
1283eee5 | 201 | |
37831078 | 202 | // number of sectors |
203 | ||
1283eee5 | 204 | Int_t nInnerSector = fTPCParam->GetNInnerSector()/2; |
205 | Int_t nOuterSector = fTPCParam->GetNOuterSector()/2; | |
fe4da5cc | 206 | |
207 | // --------------------------------------------------- | |
208 | // sector specification check | |
209 | // --------------------------------------------------- | |
210 | if (fSecAL >= 0) { | |
211 | ifl1 = 0; | |
212 | ||
213 | for (i = 0; i < 6; ++i) { | |
1283eee5 | 214 | if (fSecLows[i] >= 0 && fSecLows[i] < 2*nInnerSector) { |
fe4da5cc | 215 | ifl1 = 1; |
216 | printf("*** SECTOR %d selected\n",fSecLows[i]); | |
217 | } | |
218 | } | |
219 | ||
220 | } else { | |
221 | printf("*** ALL LOWER SECTORS SELECTED ***\n"); | |
8c555625 | 222 | ifl1 = 1; |
fe4da5cc | 223 | } |
224 | ||
d4c354b9 | 225 | if (ifl1 == 0) { |
226 | printf("*** ERROR: AT LEAST ONE LOWER SECTOR MUST BE SPECIFIED ***\n"); | |
227 | printf("!!! PROGRAM STOPPED !!!\n"); | |
228 | exit(1); | |
229 | } | |
230 | ||
fe4da5cc | 231 | if (fSecAU >= 0) { |
fe4da5cc | 232 | |
233 | for (i = 0; i < 12; ++i) { | |
1283eee5 | 234 | if (fSecUps[i] > 2*nInnerSector-1 && |
235 | fSecUps[i] < 2*(nInnerSector+nOuterSector)) { | |
fe4da5cc | 236 | printf("*** SECTOR %d selected\n",fSecUps[i]); |
237 | } | |
238 | } | |
239 | ||
240 | } else { | |
241 | printf("*** ALL UPPER SECTORS SELECTED ***\n"); | |
242 | } | |
243 | ||
d4c354b9 | 244 | |
37831078 | 245 | |
246 | //-------------------------------------------------------------------- | |
247 | ||
248 | // | |
79575d04 | 249 | // Mother volume TPC (Air) - all volumes will be positioned in it |
37831078 | 250 | // |
79575d04 | 251 | |
37831078 | 252 | dm[0]=0.; |
253 | dm[1]=360.; | |
79575d04 | 254 | dm[2]=8.; |
1283eee5 | 255 | |
37831078 | 256 | // |
1283eee5 | 257 | |
79575d04 | 258 | dm[3]=-283.7; |
259 | dm[4]=65.6; | |
260 | dm[5]=278.; | |
1283eee5 | 261 | |
37831078 | 262 | // |
1283eee5 | 263 | |
79575d04 | 264 | dm[6]=-253.6; |
265 | dm[7]=65.6; | |
266 | dm[8]=278.; | |
1283eee5 | 267 | |
37831078 | 268 | // |
1283eee5 | 269 | |
79575d04 | 270 | dm[9]=-73.3; |
271 | dm[10]=60.9; | |
272 | dm[11]=278.; | |
1283eee5 | 273 | |
37831078 | 274 | // |
1283eee5 | 275 | |
79575d04 | 276 | dm[12]=-73.3; |
277 | dm[13]=56.9; | |
278 | dm[14]=278.; | |
1283eee5 | 279 | |
37831078 | 280 | // |
1283eee5 | 281 | |
79575d04 | 282 | dm[15]=73.3; |
283 | dm[16]=56.9; | |
284 | dm[17]=278.; | |
1283eee5 | 285 | |
37831078 | 286 | // |
1283eee5 | 287 | |
79575d04 | 288 | dm[18]=73.3; |
289 | dm[19]=60.9; | |
290 | dm[20]=278.; | |
1283eee5 | 291 | |
37831078 | 292 | // |
1283eee5 | 293 | |
79575d04 | 294 | dm[21]=253.6; |
295 | dm[22]=65.6; | |
296 | dm[23]=278.; | |
1283eee5 | 297 | |
37831078 | 298 | // |
1283eee5 | 299 | |
79575d04 | 300 | dm[24]=283.7; |
301 | dm[25]=65.6; | |
302 | dm[26]=278.; | |
303 | ||
304 | gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,27); | |
1283eee5 | 305 | |
79575d04 | 306 | // outer part |
1283eee5 | 307 | |
37831078 | 308 | //------------------------------------------------------------------- |
79575d04 | 309 | // Tpc Outer INsulator (CO2) - contains cont. vessel and field cage |
37831078 | 310 | //------------------------------------------------------------------- |
1283eee5 | 311 | |
37831078 | 312 | dm[0]= 0.; |
313 | dm[1]= 360.; | |
314 | dm[2]= 6.; | |
1283eee5 | 315 | |
37831078 | 316 | // |
1283eee5 | 317 | |
79575d04 | 318 | dm[3]=-253.6; |
319 | dm[4]=258.; | |
320 | dm[5]=275.5; | |
1283eee5 | 321 | |
37831078 | 322 | // |
1283eee5 | 323 | |
79575d04 | 324 | dm[6]=-250.6; |
325 | dm[7]=258.; | |
326 | dm[8]=275.5; | |
1283eee5 | 327 | |
37831078 | 328 | // |
cc80f89e | 329 | |
79575d04 | 330 | dm[9]=-250.6; |
331 | dm[10]=258.; | |
332 | dm[11]=278.; | |
1283eee5 | 333 | |
79575d04 | 334 | // |
1283eee5 | 335 | |
79575d04 | 336 | dm[12]=253.6; |
337 | dm[13]=258.; | |
338 | dm[14]=278.; | |
1283eee5 | 339 | |
37831078 | 340 | // |
1283eee5 | 341 | |
79575d04 | 342 | dm[15]=253.6; |
343 | dm[16]=264.8; | |
344 | dm[17]=278.; | |
1283eee5 | 345 | |
37831078 | 346 | // |
1283eee5 | 347 | |
79575d04 | 348 | dm[18]=256.6; |
349 | dm[19]=264.8; | |
350 | dm[20]=278.; | |
1283eee5 | 351 | |
79575d04 | 352 | gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21); |
1283eee5 | 353 | |
37831078 | 354 | //---------------------------------------------------------------- |
355 | // Tpc Outer Contaiment Vessel | |
356 | // mother volume - Al, daughters - composite (sandwich) | |
357 | //---------------------------------------------------------------- | |
79575d04 | 358 | |
359 | dm[0]=0.; | |
360 | dm[1]=360.; | |
720b23b8 | 361 | dm[2]=6.; |
1283eee5 | 362 | |
37831078 | 363 | // |
cc80f89e | 364 | |
79575d04 | 365 | dm[3]=-250.6; |
366 | dm[4]=270.4; | |
367 | dm[5]=278.; | |
1283eee5 | 368 | |
37831078 | 369 | // |
1283eee5 | 370 | |
79575d04 | 371 | dm[6]=-247.6; |
372 | dm[7]=270.4; | |
373 | dm[8]=278.; | |
1283eee5 | 374 | |
37831078 | 375 | // |
79575d04 | 376 | |
377 | dm[9]=-247.6; | |
cea9b4f7 | 378 | dm[10]=274.8124; |
79575d04 | 379 | dm[11]=278.; |
380 | ||
37831078 | 381 | // |
1283eee5 | 382 | |
79575d04 | 383 | dm[12]=253.6; |
cea9b4f7 | 384 | dm[13]=274.8124; |
79575d04 | 385 | dm[14]=278.; |
1283eee5 | 386 | |
720b23b8 | 387 | // |
1283eee5 | 388 | |
79575d04 | 389 | dm[15]=253.6; |
390 | dm[16]=264.8; | |
391 | dm[17]=278.; | |
1283eee5 | 392 | |
79575d04 | 393 | // |
720b23b8 | 394 | |
79575d04 | 395 | dm[18]=256.6; |
396 | dm[19]=264.8; | |
397 | dm[20]=278.; | |
720b23b8 | 398 | |
399 | gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21); | |
1283eee5 | 400 | |
79575d04 | 401 | // Daughter volumes - sandwich |
1283eee5 | 402 | |
37831078 | 403 | // Tpc SAndwich 1 - Al |
79575d04 | 404 | |
cea9b4f7 | 405 | dm[0]=274.8124; |
79575d04 | 406 | dm[1]=278.; |
407 | dm[2]=252.1; | |
1283eee5 | 408 | |
37831078 | 409 | gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3); |
1283eee5 | 410 | |
79575d04 | 411 | // Tpc SAndwich 2 - epoxy glue (I use Lexan) |
1283eee5 | 412 | |
37831078 | 413 | dm[0] += 5.e-3; |
414 | dm[1] -= 5.e-3; | |
79575d04 | 415 | |
416 | gMC->Gsvolu("TSA2","TUBE",idtmed[14],dm,3); | |
417 | ||
418 | // Tpc SAndwich 3 - Tedlar | |
419 | ||
420 | dm[0] += 0.01; | |
421 | dm[1] -= 0.01; | |
37831078 | 422 | |
79575d04 | 423 | gMC->Gsvolu("TSA3","TUBE",idtmed[9],dm,3); |
1283eee5 | 424 | |
8c555625 | 425 | |
79575d04 | 426 | // Tpc SAndwich 4 - fiber glass (G10) |
8c555625 | 427 | |
cea9b4f7 | 428 | dm[0] += 3.8e-3; |
429 | dm[1] -= 3.8e-3; | |
8c555625 | 430 | |
79575d04 | 431 | gMC->Gsvolu("TSA4","TUBE",idtmed[12],dm,3); |
1283eee5 | 432 | |
79575d04 | 433 | // Tpc SAndwich 5 - NOMEX honeycomb |
1283eee5 | 434 | |
79575d04 | 435 | dm[0] += 0.075; |
436 | dm[1] -= 0.075; | |
37831078 | 437 | |
79575d04 | 438 | gMC->Gsvolu("TSA5","TUBE",idtmed[6],dm,3); |
439 | ||
440 | // 5->4->3->2->1->TCOV | |
8c555625 | 441 | |
79575d04 | 442 | |
443 | gMC->Gspos("TSA5",1,"TSA4",0.,0.,0.,0,"ONLY"); | |
37831078 | 444 | gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY"); |
445 | gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY"); | |
79575d04 | 446 | gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY"); |
fe4da5cc | 447 | |
79575d04 | 448 | gMC->Gspos("TSA1",1,"TOCV",0.,0.,3.,0,"ONLY"); |
fe4da5cc | 449 | |
37831078 | 450 | // TCOV-> TOIN |
fe4da5cc | 451 | |
37831078 | 452 | gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY"); |
fe4da5cc | 453 | |
37831078 | 454 | //------------------------------------------------------- |
455 | // Tpc Outer Field Cage | |
456 | // mother volume - Al, daughters - composite (sandwich) | |
457 | //------------------------------------------------------- | |
1283eee5 | 458 | |
37831078 | 459 | dm[0]=0.; |
460 | dm[1]=360.; | |
461 | dm[2]=6.; | |
1283eee5 | 462 | |
79575d04 | 463 | // |
464 | ||
465 | dm[3]=-253.6; | |
466 | dm[4]=258.; | |
467 | dm[5]=275.5; | |
1283eee5 | 468 | |
37831078 | 469 | // |
1283eee5 | 470 | |
79575d04 | 471 | dm[6]=-250.6; |
472 | dm[7]=258.; | |
473 | dm[8]=275.5; | |
1283eee5 | 474 | |
37831078 | 475 | // |
79575d04 | 476 | |
477 | dm[9]=-250.6; | |
478 | dm[10]=258.; | |
cea9b4f7 | 479 | dm[11]=260.0476; |
1283eee5 | 480 | |
37831078 | 481 | // |
1283eee5 | 482 | |
79575d04 | 483 | dm[12]=250.6; |
484 | dm[13]=258.; | |
cea9b4f7 | 485 | dm[14]=260.0476; |
1283eee5 | 486 | |
37831078 | 487 | // |
1283eee5 | 488 | |
79575d04 | 489 | dm[15]=250.6; |
490 | dm[16]=258.; | |
491 | dm[17]=275.5; | |
1283eee5 | 492 | |
37831078 | 493 | // |
1283eee5 | 494 | |
79575d04 | 495 | dm[18]=253.6; |
496 | dm[19]=258.; | |
497 | dm[20]=275.5; | |
1283eee5 | 498 | |
79575d04 | 499 | gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21); |
1283eee5 | 500 | |
37831078 | 501 | // Daughter volumes |
1283eee5 | 502 | |
79575d04 | 503 | // Tpc SAndwich 6 - Tedlar |
1283eee5 | 504 | |
37831078 | 505 | dm[0]= 258.; |
cea9b4f7 | 506 | dm[1]= 260.0476; |
79575d04 | 507 | dm[2]= 252.1; |
1283eee5 | 508 | |
79575d04 | 509 | gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3); |
1283eee5 | 510 | |
79575d04 | 511 | // Tpc SAndwich 7 - fiber glass |
1283eee5 | 512 | |
cea9b4f7 | 513 | dm[0] += 3.8e-3; |
514 | dm[1] -= 3.8e-3; | |
1283eee5 | 515 | |
79575d04 | 516 | gMC->Gsvolu("TSA7","TUBE",idtmed[12],dm,3); |
1283eee5 | 517 | |
1283eee5 | 518 | |
37831078 | 519 | // Tpc SAndwich 8 - NOMEX |
1283eee5 | 520 | |
37831078 | 521 | dm[0] += 0.02; |
522 | dm[1] -= 0.02; | |
1283eee5 | 523 | |
79575d04 | 524 | gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3); |
1283eee5 | 525 | |
79575d04 | 526 | // 8->7->6->TOFC |
1283eee5 | 527 | |
79575d04 | 528 | gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY"); |
529 | gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY"); | |
530 | gMC->Gspos("TSA6",1,"TOFC",0.,0.,0.,0,"ONLY"); | |
fe4da5cc | 531 | |
37831078 | 532 | // TOFC->TOIN |
fe4da5cc | 533 | |
79575d04 | 534 | gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY"); |
1283eee5 | 535 | |
37831078 | 536 | // TOIN->TPC |
1283eee5 | 537 | |
37831078 | 538 | gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY"); |
1283eee5 | 539 | |
79575d04 | 540 | // inner part |
1283eee5 | 541 | |
79575d04 | 542 | //-------------------------------------------------------------------- |
543 | // Tpc Inner INsulator (CO2) - inner f.c. will be placed there | |
544 | // Inner containment vessel will be placed directly in the TPC | |
545 | //-------------------------------------------------------------------- | |
1283eee5 | 546 | |
37831078 | 547 | dm[0]=0.; |
79575d04 | 548 | dm[1]=360.; |
549 | dm[2]=4.; | |
1283eee5 | 550 | |
79575d04 | 551 | // |
1283eee5 | 552 | |
79575d04 | 553 | dm[3]=-253.6; |
554 | dm[4]=65.9; | |
555 | dm[5]=79.2; | |
1283eee5 | 556 | |
37831078 | 557 | // |
1283eee5 | 558 | |
79575d04 | 559 | dm[6]=-73.3; |
560 | dm[7]=61.2; | |
561 | dm[8]=79.2; | |
1283eee5 | 562 | |
37831078 | 563 | // |
1283eee5 | 564 | |
79575d04 | 565 | dm[9]=73.3; |
566 | dm[10]=61.2; | |
567 | dm[11]=79.2; | |
1283eee5 | 568 | |
37831078 | 569 | // |
1283eee5 | 570 | |
79575d04 | 571 | dm[12]=253.6; |
572 | dm[13]=65.9; | |
573 | dm[14]=79.2; | |
1283eee5 | 574 | |
79575d04 | 575 | gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,15); |
1283eee5 | 576 | |
79575d04 | 577 | // the middle part of the F.C. is thinner - carve out the strip - Ne-CO2 |
1283eee5 | 578 | |
79575d04 | 579 | dm[0]=79.16; |
580 | dm[1]=79.2; | |
581 | dm[2]=88.; | |
1283eee5 | 582 | |
79575d04 | 583 | gMC->Gsvolu("TII1","TUBE",idtmed[1],dm,3); |
1283eee5 | 584 | |
79575d04 | 585 | gMC->Gspos("TII1",1,"TIIN",0.,0.,0.,0,"ONLY"); |
1283eee5 | 586 | |
79575d04 | 587 | //----------------------------------------------------- |
588 | // Tpc Inner Field Cage | |
589 | // mother volume - Al, daughters - composite (sandwich) | |
590 | //------------------------------------------------------ | |
1283eee5 | 591 | |
79575d04 | 592 | dm[0]=0.; |
593 | dm[1]=360.; | |
594 | dm[2]=10.; | |
1283eee5 | 595 | |
37831078 | 596 | // |
1283eee5 | 597 | |
79575d04 | 598 | dm[3]=-253.6; |
599 | dm[4]=70.3; | |
600 | dm[5]=79.2; | |
1283eee5 | 601 | |
37831078 | 602 | // |
1283eee5 | 603 | |
79575d04 | 604 | dm[6]=-250.6; |
605 | dm[7]=70.3; | |
606 | dm[8]=79.2; | |
1283eee5 | 607 | |
37831078 | 608 | // |
1283eee5 | 609 | |
79575d04 | 610 | dm[9]=-250.6; |
cea9b4f7 | 611 | dm[10]=77.0524; |
79575d04 | 612 | dm[11]=79.2; |
37831078 | 613 | |
614 | // | |
615 | ||
79575d04 | 616 | dm[12]=-88.; |
cea9b4f7 | 617 | dm[13]=77.0524; |
79575d04 | 618 | dm[14]=79.2; |
1283eee5 | 619 | |
37831078 | 620 | // |
1283eee5 | 621 | |
79575d04 | 622 | dm[15]=-88.; |
cea9b4f7 | 623 | dm[16]=77.0924; |
79575d04 | 624 | dm[17]=79.16; |
1283eee5 | 625 | |
626 | // | |
37831078 | 627 | |
79575d04 | 628 | dm[18]=88.; |
cea9b4f7 | 629 | dm[19]=77.0924; |
79575d04 | 630 | dm[20]=79.16; |
37831078 | 631 | |
1283eee5 | 632 | // |
633 | ||
79575d04 | 634 | dm[21]=88.; |
cea9b4f7 | 635 | dm[22]=77.0524; |
79575d04 | 636 | dm[23]=79.2; |
1283eee5 | 637 | |
37831078 | 638 | // |
1283eee5 | 639 | |
79575d04 | 640 | dm[24]=250.6; |
cea9b4f7 | 641 | dm[25]=77.0524; |
79575d04 | 642 | dm[26]=79.2; |
1283eee5 | 643 | |
37831078 | 644 | // |
1283eee5 | 645 | |
79575d04 | 646 | dm[27]=250.6; |
647 | dm[28]=70.3; | |
648 | dm[29]=79.2; | |
1283eee5 | 649 | |
37831078 | 650 | // |
1283eee5 | 651 | |
79575d04 | 652 | dm[30]=253.6; |
653 | dm[31]=70.3; | |
654 | dm[32]=79.2; | |
1283eee5 | 655 | |
79575d04 | 656 | gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,33); |
1283eee5 | 657 | |
79575d04 | 658 | // daughter volumes - central part |
1283eee5 | 659 | |
79575d04 | 660 | // Tpc Sandwich 9 -Tedlar |
1283eee5 | 661 | |
cea9b4f7 | 662 | dm[0]=77.0924; |
79575d04 | 663 | dm[1]=79.16; |
664 | dm[2]=88.; | |
1283eee5 | 665 | |
79575d04 | 666 | gMC->Gsvolu("TSA9","TUBE",idtmed[9],dm,3); |
1283eee5 | 667 | |
79575d04 | 668 | // Tpc Sandwich 10 - fiber glass (G10) |
1283eee5 | 669 | |
cea9b4f7 | 670 | dm[0] += 3.8e-3; |
671 | dm[1] -= 3.8e-3; | |
1283eee5 | 672 | |
79575d04 | 673 | gMC->Gsvolu("TS10","TUBE",idtmed[12],dm,3); |
1283eee5 | 674 | |
79575d04 | 675 | // Tpc Sandwich 11 - NOMEX |
1283eee5 | 676 | |
79575d04 | 677 | dm[0] += 0.03; |
678 | dm[1] -= 0.03; | |
1283eee5 | 679 | |
79575d04 | 680 | gMC->Gsvolu("TS11","TUBE",idtmed[6],dm,3); |
1283eee5 | 681 | |
79575d04 | 682 | // 11->10->9->TIFC |
1283eee5 | 683 | |
79575d04 | 684 | gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY"); |
685 | gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY"); | |
1283eee5 | 686 | |
79575d04 | 687 | gMC->Gspos("TSA9",1,"TIFC",0.,0.,0.,0,"ONLY"); |
1283eee5 | 688 | |
79575d04 | 689 | // daughter volumes - outer parts (reinforced) |
1283eee5 | 690 | |
79575d04 | 691 | // Tpc Sandwich 12 -Tedlar |
1283eee5 | 692 | |
cea9b4f7 | 693 | dm[0]=77.0524; |
79575d04 | 694 | dm[1]=79.2; |
695 | dm[2]=82.05; | |
1283eee5 | 696 | |
79575d04 | 697 | gMC->Gsvolu("TS12","TUBE",idtmed[9],dm,3); |
1283eee5 | 698 | |
79575d04 | 699 | // Tpc Sandwich 13 - fiber glass (G10) |
1283eee5 | 700 | |
cea9b4f7 | 701 | dm[0] += 3.8e-3; |
702 | dm[1] -= 3.8e-3; | |
1283eee5 | 703 | |
79575d04 | 704 | gMC->Gsvolu("TS13","TUBE",idtmed[12],dm,3); |
1283eee5 | 705 | |
79575d04 | 706 | // Tpc Sandwich 14 - NOMEX |
1283eee5 | 707 | |
79575d04 | 708 | dm[0] += 0.07; |
709 | dm[1] -= 0.07; | |
1283eee5 | 710 | |
79575d04 | 711 | gMC->Gsvolu("TS14","TUBE",idtmed[6],dm,3); |
1283eee5 | 712 | |
79575d04 | 713 | // 14->13->12->TIFC |
1283eee5 | 714 | |
79575d04 | 715 | gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY"); |
716 | gMC->Gspos("TS13",1,"TS12",0.,0.,0.,0,"ONLY"); | |
1283eee5 | 717 | |
79575d04 | 718 | gMC->Gspos("TS12",1,"TIFC",0.,0.,170.05,0,"ONLY"); |
719 | gMC->Gspos("TS12",2,"TIFC",0.,0.,-170.05,0,"ONLY"); | |
1283eee5 | 720 | |
79575d04 | 721 | // place this inside the inner insulator |
1283eee5 | 722 | |
79575d04 | 723 | gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY"); |
1283eee5 | 724 | |
79575d04 | 725 | // and now in the TPC... |
1283eee5 | 726 | |
79575d04 | 727 | gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY"); |
37831078 | 728 | |
79575d04 | 729 | //--------------------------------------------------------- |
730 | // Tpc Inner Containment vessel - Cones | |
731 | //--------------------------------------------------------- | |
1283eee5 | 732 | |
79575d04 | 733 | dm[0]=0.; |
734 | dm[1]=360.; | |
37831078 | 735 | dm[2]=8.; |
1283eee5 | 736 | |
37831078 | 737 | // |
1283eee5 | 738 | |
79575d04 | 739 | dm[3]=71.8; |
740 | dm[4]=56.9; | |
741 | dm[5]=59.4; | |
1283eee5 | 742 | |
37831078 | 743 | // |
1283eee5 | 744 | |
79575d04 | 745 | dm[6]=73.; |
746 | dm[7]=56.9; | |
747 | dm[8]=59.4; | |
1283eee5 | 748 | |
37831078 | 749 | // |
1283eee5 | 750 | |
79575d04 | 751 | dm[9]=73.; |
752 | dm[10]=56.9; | |
753 | dm[11]=61.2; | |
1283eee5 | 754 | |
37831078 | 755 | // |
1283eee5 | 756 | |
79575d04 | 757 | dm[12]=73.3; |
758 | dm[13]=56.9; | |
759 | dm[14]=61.2; | |
1283eee5 | 760 | |
37831078 | 761 | // |
79575d04 | 762 | |
763 | dm[15]=73.3; | |
764 | dm[16]=60.9; | |
765 | dm[17]=61.2; | |
1283eee5 | 766 | |
79575d04 | 767 | // |
1283eee5 | 768 | |
79575d04 | 769 | dm[18]=253.6; |
770 | dm[19]=65.6; | |
771 | dm[20]=65.9; | |
1283eee5 | 772 | |
37831078 | 773 | // |
1283eee5 | 774 | |
79575d04 | 775 | dm[21]=253.6; |
776 | dm[22]=65.6; | |
f4900c61 | 777 | dm[23]=74.6; |
1283eee5 | 778 | |
37831078 | 779 | // |
1283eee5 | 780 | |
f4900c61 | 781 | dm[24]=256.6; |
79575d04 | 782 | dm[25]=65.6; |
f4900c61 | 783 | dm[26]=74.6; |
1283eee5 | 784 | |
79575d04 | 785 | gMC->Gsvolu("TICC","PCON",idtmed[4],dm,27); |
1283eee5 | 786 | |
79575d04 | 787 | Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles |
1283eee5 | 788 | |
79575d04 | 789 | // reflection matrix |
790 | ||
791 | theta1 = 90.; | |
792 | phi1 = 0.; | |
793 | theta2 = 90.; | |
794 | phi2 = 270.; | |
795 | theta3 = 180.; | |
796 | phi3 = 0.; | |
1283eee5 | 797 | |
79575d04 | 798 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); |
1283eee5 | 799 | |
79575d04 | 800 | gMC->Gspos("TICC",1,"TPC ",0.,0.,0.,0,"ONLY"); |
801 | gMC->Gspos("TICC",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY"); | |
1283eee5 | 802 | |
1283eee5 | 803 | |
79575d04 | 804 | //--------------------------------------------------------- |
805 | // Tpc Inner Containment vessel - Middle part -Al | |
806 | //--------------------------------------------------------- | |
1283eee5 | 807 | |
79575d04 | 808 | dm[0]=0.; |
809 | dm[1]=360.; | |
810 | dm[2]=6.; | |
1283eee5 | 811 | |
37831078 | 812 | // |
1283eee5 | 813 | |
79575d04 | 814 | dm[3]=-71.6; |
815 | dm[4]=60.2; | |
816 | dm[5]=61.2; | |
1283eee5 | 817 | |
37831078 | 818 | // |
1283eee5 | 819 | |
79575d04 | 820 | dm[6]=-69.1; |
821 | dm[7]=60.2; | |
822 | dm[8]=61.2; | |
1283eee5 | 823 | |
37831078 | 824 | // |
1283eee5 | 825 | |
79575d04 | 826 | dm[9]=-69.1; |
cea9b4f7 | 827 | dm[10]=60.6224; |
79575d04 | 828 | dm[11]=61.2; |
1283eee5 | 829 | |
fe4da5cc | 830 | // |
831 | ||
79575d04 | 832 | dm[12]=69.1; |
cea9b4f7 | 833 | dm[13]=60.6224; |
79575d04 | 834 | dm[14]=61.2; |
fe4da5cc | 835 | |
fe4da5cc | 836 | // |
837 | ||
79575d04 | 838 | dm[15]=69.1; |
839 | dm[16]=60.2; | |
840 | dm[17]=61.2; | |
37831078 | 841 | |
fe4da5cc | 842 | // |
37831078 | 843 | |
79575d04 | 844 | dm[18]=71.6; |
845 | dm[19]=60.2; | |
846 | dm[20]=61.2; | |
37831078 | 847 | |
79575d04 | 848 | gMC->Gsvolu("TICM","PCON",idtmed[4],dm,21); |
fe4da5cc | 849 | |
79575d04 | 850 | // Tpc Sandwich 15 - Al |
37831078 | 851 | |
cea9b4f7 | 852 | dm[0]=60.6224; |
79575d04 | 853 | dm[1]=61.2; |
854 | dm[2]=70.1; | |
37831078 | 855 | |
79575d04 | 856 | gMC->Gsvolu("TS15","TUBE",idtmed[4],dm,3); |
fe4da5cc | 857 | |
79575d04 | 858 | // Tpc Sandwich 16 - epoxy glue |
fe4da5cc | 859 | |
79575d04 | 860 | dm[0] += 5.e-3; |
861 | dm[1] -= 5.e-3; | |
fe4da5cc | 862 | |
79575d04 | 863 | gMC->Gsvolu("TS16","TUBE",idtmed[14],dm,3); |
fe4da5cc | 864 | |
6a905708 | 865 | // Tpc Sandwich 17 - Tedlar |
37831078 | 866 | |
79575d04 | 867 | dm[0] += 0.01; |
868 | dm[1] -= 0.01; | |
37831078 | 869 | |
6a905708 | 870 | gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3); |
37831078 | 871 | |
cea9b4f7 | 872 | // Tpc Sandwich 18 - carbon fiber |
37831078 | 873 | |
cea9b4f7 | 874 | dm[0] += 3.8e-3; |
875 | dm[1] -= 3.8e-3; | |
37831078 | 876 | |
cea9b4f7 | 877 | gMC->Gsvolu("TS18","TUBE",idtmed[15],dm,3); |
37831078 | 878 | |
79575d04 | 879 | // Tpc Sandwich 19 - Nomex |
37831078 | 880 | |
cea9b4f7 | 881 | dm[0] += 0.02; |
882 | dm[1] -= 0.02; | |
37831078 | 883 | |
90222263 | 884 | gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3); |
37831078 | 885 | |
79575d04 | 886 | // 19->18->17->16->15-> TICM |
37831078 | 887 | |
79575d04 | 888 | gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY"); |
37831078 | 889 | gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY"); |
79575d04 | 890 | gMC->Gspos("TS17",1,"TS16",0.,0.,0.,0,"ONLY"); |
891 | gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY"); | |
37831078 | 892 | |
79575d04 | 893 | gMC->Gspos("TS15",1,"TICM ",0.,0.,0.,0,"ONLY"); |
894 | ||
37831078 | 895 | |
79575d04 | 896 | // TPc inner cont. vessel Joints |
37831078 | 897 | |
79575d04 | 898 | dm[0]=60.2; |
899 | dm[1]=61.2; | |
900 | dm[2]=0.5; | |
37831078 | 901 | |
79575d04 | 902 | gMC->Gsvolu("TPJ1","TUBE",idtmed[4],dm,3); |
37831078 | 903 | |
79575d04 | 904 | gMC->Gspos("TPJ1",1,"TPC ",0.,0.,72.3,0,"ONLY"); |
905 | gMC->Gspos("TPJ1",2,"TPC ",0.,0.,-72.3,0,"ONLY"); | |
37831078 | 906 | |
79575d04 | 907 | // |
37831078 | 908 | |
79575d04 | 909 | dm[0]=0.; |
910 | dm[1]=360.; | |
911 | dm[2]=4.; | |
37831078 | 912 | |
79575d04 | 913 | // |
37831078 | 914 | |
79575d04 | 915 | dm[3]=70.8; |
916 | dm[4]=58.4; | |
917 | dm[5]=60.1; | |
37831078 | 918 | |
79575d04 | 919 | // |
37831078 | 920 | |
79575d04 | 921 | dm[6]=71.2; |
922 | dm[7]=58.4; | |
923 | dm[8]=60.1; | |
37831078 | 924 | |
79575d04 | 925 | // |
37831078 | 926 | |
79575d04 | 927 | dm[9]=71.2; |
928 | dm[10]=58.4; | |
929 | dm[11]=59.4; | |
37831078 | 930 | |
79575d04 | 931 | // |
37831078 | 932 | |
79575d04 | 933 | dm[12]=71.6; |
934 | dm[13]=58.4; | |
935 | dm[14]=59.4; | |
37831078 | 936 | |
79575d04 | 937 | gMC->Gsvolu("TPJ2","PCON",idtmed[4],dm,15); |
37831078 | 938 | |
79575d04 | 939 | gMC->Gspos("TPJ2",1,"TPC ",0.,0.,0.,0,"ONLY"); |
940 | gMC->Gspos("TPJ2",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY"); | |
37831078 | 941 | |
37831078 | 942 | |
37831078 | 943 | |
79575d04 | 944 | // Tpc Inner Containment vessel Seal (Viton, I use Lexan for a time being) |
37831078 | 945 | |
79575d04 | 946 | dm[0]=58.4; |
947 | dm[1]=61.2; | |
948 | dm[2]=0.1; | |
37831078 | 949 | |
79575d04 | 950 | gMC->Gsvolu("TICS","TUBE",idtmed[14],dm,3); |
37831078 | 951 | |
79575d04 | 952 | gMC->Gspos("TICS",1,"TPC ",0.,0.,71.7,0,"ONLY"); |
953 | gMC->Gspos("TICS",2,"TPC ",0.,0.,-71.7,0,"ONLY"); | |
37831078 | 954 | |
79575d04 | 955 | // TICM -> TPC |
37831078 | 956 | |
79575d04 | 957 | gMC->Gspos("TICM",1,"TPC ",0.,0.,0.,0,"ONLY"); |
37831078 | 958 | |
79575d04 | 959 | // |
37831078 | 960 | |
79575d04 | 961 | nRotMat++; // prepare for the next rotation matrix |
37831078 | 962 | |
963 | //--------------------------------------------------------- | |
964 | // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10) | |
965 | // and its daughters (HV membrane, rods, readout chambers) | |
966 | //--------------------------------------------------------- | |
967 | ||
968 | dm[0]= 79.2; | |
969 | dm[1]= 258.0; | |
970 | dm[2]= 253.6; | |
971 | ||
79575d04 | 972 | gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3); |
37831078 | 973 | |
79575d04 | 974 | // sector opening angles |
37831078 | 975 | |
976 | Float_t innerOpenAngle = fTPCParam->GetInnerAngle(); | |
977 | Float_t outerOpenAngle = fTPCParam->GetOuterAngle(); | |
978 | ||
979 | // sector angle shift | |
980 | ||
981 | Float_t innerAngleShift = fTPCParam->GetInnerAngleShift(); | |
982 | ||
79575d04 | 983 | |
37831078 | 984 | // All above parameters are identical for inner and outer |
985 | // sectors. The distinction is kept for the historical reasons | |
986 | // and eventually will disappear. | |
987 | ||
988 | Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle); | |
989 | Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha); | |
990 | Float_t space; | |
991 | ||
992 | //------------------------------------------------------------------------- | |
993 | // Tpc Inner Readout Chambers | |
994 | //------------------------------------------------------------------------- | |
995 | ||
996 | dm[0]= 14.483; | |
997 | dm[1]= 23.3345; | |
998 | dm[2]= 1.6; // thickness | |
999 | dm[3]= 25.1; | |
1000 | ||
1001 | gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4); | |
1002 | ||
1003 | // this volume will be positioned in the empty space | |
1004 | // of the end-cap to avoid overlaps | |
1005 | ||
1006 | dm[0]= 13.7305; | |
1007 | dm[1]= 21.1895; | |
1008 | dm[2]= 2.25; | |
1009 | dm[3]= 21.15; | |
1010 | ||
1011 | gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4); | |
1012 | ||
79575d04 | 1013 | |
37831078 | 1014 | //------------------------------------------------ |
1015 | // Tpc Inner readout chamber Pad Plane | |
1016 | //------------------------------------------------ | |
1017 | ||
1018 | dm[0]= 14.483; | |
1019 | dm[1]= 23.3345; | |
1020 | dm[2]= 0.5; | |
1021 | dm[3]= 25.1; | |
1022 | ||
1023 | gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4); | |
1024 | ||
1025 | // | |
1026 | ||
1027 | dm[0] -= 1.218511934; | |
1028 | dm[1] -= 1.218511934; | |
1029 | dm[2] = 0.35; | |
1030 | ||
1031 | gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4); | |
1032 | ||
1033 | gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY"); | |
1034 | ||
1035 | gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY"); | |
1036 | ||
79575d04 | 1037 | |
37831078 | 1038 | //---------------------------------------------- |
1039 | // Tpc Readout Chambers Empty spaces - for both | |
1040 | // inner and outer sectors | |
1041 | //---------------------------------------------- | |
1042 | ||
1043 | gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0); | |
1044 | ||
1045 | // Inner sector - 4 spaces | |
1046 | ||
1047 | ||
1048 | dm[3] = 4.7625; | |
1049 | dm[0] = 12.472; | |
1050 | ||
1051 | Float_t rr = 90.52; | |
1052 | Float_t zz; | |
1053 | ||
1054 | zz= -12.7875; | |
1055 | ||
1056 | space = rr*tanAlpha-dm[0]; | |
1057 | ||
1058 | for(Int_t nsLow=0;nsLow<4;nsLow++){ | |
1059 | ||
1060 | rr += 9.525; | |
1061 | dm[1]= rr*tanAlpha - space; | |
1062 | ||
1063 | dm[2]=0.8; | |
1064 | ||
1065 | gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4); | |
1066 | ||
1067 | // | |
1068 | ||
79575d04 | 1069 | dm[2] = 1.2; |
37831078 | 1070 | |
1071 | gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4); | |
1072 | ||
1073 | rr += 0.4; | |
1074 | dm[0] = rr*tanAlpha - space; | |
1075 | zz += (0.4+9.525); | |
1076 | ||
1077 | } | |
1078 | ||
1079 | dm[0]= 12.472; | |
1080 | // dm[1] - this is the dm[1] from the previous TRCE | |
1081 | dm[2]= 1.05; | |
1082 | dm[3]= 19.65; | |
1083 | ||
79575d04 | 1084 | gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4); |
37831078 | 1085 | |
1086 | // | |
1087 | // TPc Space for Connectors | |
1088 | // | |
1089 | ||
1090 | dm[0]= .3; | |
1091 | dm[1]= .3; | |
1092 | dm[2]= 4.5; | |
1093 | ||
1094 | gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3); | |
1095 | ||
1096 | // TPC Connectors | |
1097 | ||
1098 | dm[0]= .25; | |
1099 | dm[1]= .15; | |
1100 | dm[2]= 3.75; | |
1101 | ||
1102 | gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3); | |
1103 | ||
1104 | gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY"); | |
1105 | ||
1106 | zz = -12.7875; | |
1107 | ||
79575d04 | 1108 | |
37831078 | 1109 | Float_t alpha; |
1110 | Float_t astep; | |
1111 | ||
37831078 | 1112 | // inner part of the inner sector - 2 x 20 holes |
1113 | ||
1114 | astep = 20.00096874/19.; | |
1115 | ||
1116 | alpha = 10.00048437-astep; | |
1117 | ||
1118 | Float_t x1,x2; | |
1119 | ||
1120 | x1 = 13.31175725; | |
1121 | x1 -= 0.996357832; | |
1122 | ||
1123 | x2 = 15.06180253; | |
1124 | x2 -= 1.163028812; | |
1125 | ||
1126 | Int_t ncon; | |
1127 | ||
1128 | for(ncon=0;ncon<20;ncon++){ | |
1129 | ||
1130 | phi1 = 0.; | |
1131 | theta1 = 90.+alpha; | |
1132 | phi2=90.; | |
1133 | theta2 = 90.; | |
1134 | phi3 = (alpha>0) ? 0. : 180.; | |
1135 | theta3 = TMath::Abs(alpha); | |
1136 | ||
1137 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1138 | ||
1139 | ||
1140 | ||
1141 | gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY"); | |
1142 | gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY"); | |
1143 | ||
1144 | ||
1145 | x1 -= 1.296357833; | |
1146 | x2 -= 1.463028812; | |
1147 | ||
1148 | alpha -= astep; | |
1149 | nRotMat++; | |
1150 | ||
1151 | } | |
1152 | ||
1153 | // outer part of the inner sector - 2 x 25 holes | |
1154 | ||
1155 | astep = 20.00096874/24.; | |
1156 | alpha = 10.00048437-astep; | |
1157 | ||
1158 | x1 = 16.81184781; | |
1159 | x1 -= 1.016295986; | |
1160 | ||
1161 | x2 = 18.5618931; | |
1162 | x2 -= 1.150914854; | |
1163 | ||
1164 | for(ncon=0;ncon<25;ncon++){ | |
1165 | ||
1166 | phi1 = 0.; | |
1167 | theta1 = 90.+alpha; | |
1168 | phi2=90.; | |
1169 | theta2 = 90.; | |
1170 | phi3 = (alpha>0) ? 0. : 180.; | |
1171 | theta3 = TMath::Abs(alpha); | |
1172 | ||
1173 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1174 | ||
1175 | ||
1176 | ||
1177 | gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY"); | |
1178 | gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY"); | |
1179 | ||
1180 | ||
1181 | x1 -= 1.316295986; | |
1182 | x2 -= 1.450914854; | |
1183 | ||
1184 | alpha -= astep; | |
1185 | nRotMat++; | |
1186 | ||
1187 | } | |
1188 | ||
1189 | //-------------------------------------------------------------------------- | |
1190 | // TPC Outer Readout Chambers | |
1191 | // this is NOT a final design | |
1192 | //-------------------------------------------------------------------------- | |
1193 | ||
1194 | dm[0]= 23.3875; | |
1195 | dm[1]= 43.524; | |
1196 | dm[2]= 1.5; //thickness | |
1197 | dm[3]= 57.1; | |
1198 | ||
1199 | gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4); | |
1200 | ||
1201 | //------------------------------------------------ | |
1202 | // Tpc Outer readout chamber Pad Plane | |
1203 | //------------------------------------------------ | |
1204 | ||
1205 | dm[2]= 0.5; | |
1206 | ||
1207 | gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4); | |
1208 | ||
1209 | dm[0] -= 1.218511934; | |
1210 | dm[1] -= 1.218511934; | |
1211 | dm[2] = 0.35; | |
1212 | ||
1213 | gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4); | |
1214 | ||
1215 | gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY"); | |
1216 | ||
1217 | gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY"); | |
1218 | ||
1219 | // empty space | |
1220 | ||
37831078 | 1221 | dm[0]= 21.035; |
1222 | dm[1]= 38.7205; | |
1223 | dm[2]= 0.7; | |
1224 | dm[3]= 50.15; | |
1225 | ||
1226 | gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4); | |
1227 | ||
1228 | dm[0]= 22.2935; | |
1229 | dm[1]= 40.5085; | |
1230 | dm[2]= 2.25; | |
1231 | dm[3]= 51.65; | |
1232 | ||
1233 | gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4); | |
1234 | ||
1235 | dm[0]= 21.35; | |
1236 | dm[1]= 38.7205; | |
1237 | dm[2]= 2.25; | |
1238 | dm[3]= 50.15; | |
1239 | ||
79575d04 | 1240 | gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4); |
37831078 | 1241 | |
1242 | //----------------------------------------------- | |
1243 | // Tpc Services Support Wheel | |
1244 | //----------------------------------------------- | |
1245 | ||
1246 | dm[0]=0.; | |
1247 | dm[1]=360.; | |
1248 | dm[2]=18.; | |
1249 | dm[3]=2.; | |
1250 | ||
1251 | dm[4]= -5.; | |
1252 | dm[5]= 77.017; | |
1253 | dm[6]= 255.267; | |
1254 | ||
1255 | dm[7]= 5.; | |
1256 | dm[8]= dm[5]; | |
1257 | dm[9]= dm[6]; | |
1258 | ||
1259 | gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10); | |
1260 | ||
1261 | // Tpc Services Wheel Cover | |
1262 | ||
1263 | dm[4]= -0.5; | |
1264 | dm[7]= 0.5; | |
1265 | ||
1266 | gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10); | |
1267 | ||
1268 | // Tpc Service wheel Cover Empty space | |
1269 | ||
1270 | dm[0]= 10.99; | |
1271 | dm[1]= 39.599; | |
1272 | dm[2]= .5; | |
1273 | dm[3]= 81.125; | |
1274 | ||
1275 | gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4); | |
1276 | ||
1277 | // Tpc services Wheel Empty Spaces | |
1278 | ||
1279 | dm[0]= 13.18017507; | |
1280 | dm[1]= 44.61045938; | |
1281 | dm[2]= 4.; | |
1282 | dm[3]= 89.125; | |
1283 | ||
1284 | gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4); | |
1285 | ||
1286 | // Tpc Services Wheel Bars | |
1287 | ||
1288 | gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0); | |
1289 | ||
1290 | // bars-> TWES | |
1291 | ||
1292 | dm[2]= 4.; | |
1293 | dm[3]= .4; | |
1294 | ||
1295 | dm[0]= 13.8149522; | |
1296 | dm[1]= 13.95601379; | |
1297 | ||
1298 | gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4); | |
1299 | ||
1300 | dm[0]= 43.83462067; | |
1301 | dm[1]= 43.97568225; | |
1302 | ||
1303 | gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4); | |
1304 | ||
1305 | // TPc ELectronics - right now 30% X0 Si | |
1306 | ||
1307 | dm[0]= 14.03813696; | |
1308 | dm[1]= 43.3524075; | |
1309 | dm[2]= 1.404; | |
1310 | dm[3]= 83.125; | |
1311 | ||
1312 | gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4); | |
1313 | gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY"); | |
1314 | ||
1315 | //-------------------------------------------------------------------------- | |
1316 | // End caps | |
1317 | //-------------------------------------------------------------------------- | |
1318 | ||
1319 | // TPc Main Wheel - Al | |
1320 | ||
79575d04 | 1321 | dm[0]= 74.9; |
1322 | dm[1]= 264.4; | |
37831078 | 1323 | dm[2]= 3.0; |
1324 | ||
1325 | gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3); | |
1326 | ||
37831078 | 1327 | //-------------------------------------------------------------------------- |
1328 | // Tpc Empty Space for the Readout chambers | |
1329 | //-------------------------------------------------------------------------- | |
1330 | ||
1331 | Float_t rLow= 86.2; | |
1332 | Float_t rUp= 243.5; | |
1333 | Float_t dR = 0.5*(rUp-rLow); | |
1334 | ||
79575d04 | 1335 | space= 1.5/cosAlpha; // wheel ribs are 3.0 cm wide |
37831078 | 1336 | |
1337 | dm[0]= rLow*tanAlpha-space; | |
1338 | dm[1]= rUp*tanAlpha-space; | |
79575d04 | 1339 | dm[2] = 3.0; |
37831078 | 1340 | dm[3]= dR; |
1341 | ||
1342 | gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4); | |
1343 | ||
1344 | // TIC1->TESR | |
1345 | ||
37831078 | 1346 | gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY"); |
1347 | ||
37831078 | 1348 | // TOC1->TESR |
1349 | ||
1350 | gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY"); | |
1351 | ||
1352 | // Tpc Empty Space Bars - Al (daughters of TESR) | |
1353 | ||
1354 | Float_t zBar; | |
1355 | ||
1356 | gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0); | |
1357 | ||
1358 | // lower bar | |
1359 | ||
1360 | dm[0]= rLow*tanAlpha-space; | |
1361 | dm[1]= 88.7*tanAlpha-space; | |
79575d04 | 1362 | dm[2]= 2.25; |
37831078 | 1363 | dm[3]= 1.275; |
1364 | ||
1365 | zBar = -dR+dm[3]; | |
1366 | ||
79575d04 | 1367 | gMC->Gsposp("TESB",1,"TESR",0.,0.75,zBar,0,"ONLY",dm,4); |
37831078 | 1368 | |
1369 | // middle bar | |
1370 | ||
1371 | dm[0]= 131.65*tanAlpha-space; | |
1372 | dm[1]= 136.5*tanAlpha-space; | |
1373 | dm[3]= 2.425; | |
1374 | ||
1375 | zBar = -dR +131.65+dm[3]-rLow; | |
1376 | ||
79575d04 | 1377 | gMC->Gsposp("TESB",2,"TESR",0.,0.75,zBar,0,"ONLY",dm,4); |
37831078 | 1378 | |
1379 | // upper bar | |
1380 | ||
1381 | dm[0]= 240.4*tanAlpha-space; | |
1382 | dm[1]= rUp*tanAlpha-space; | |
1383 | dm[3]= 1.55; | |
1384 | ||
1385 | zBar = dR-dm[3]; | |
1386 | ||
79575d04 | 1387 | gMC->Gsposp("TESB",3,"TESR",0.,0.75,zBar,0,"ONLY",dm,4); |
37831078 | 1388 | |
1389 | //------------------------------------------------------ | |
1390 | // TPc Lower "S" Sectors | |
1391 | //------------------------------------------------------ | |
1392 | ||
1393 | ||
1394 | Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow(); | |
1395 | Float_t inSecUpEdge = fTPCParam->GetInnerRadiusUp(); | |
1396 | ||
1397 | dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01; | |
1398 | dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01; | |
79575d04 | 1399 | dm[2] = 0.5*(250. - 5.e-3); |
37831078 | 1400 | dm[3] = 0.5*(inSecUpEdge-inSecLowEdge); |
1401 | ||
1402 | gMC->Gsvolu("TPLS", "TRD1", idtmed[2], dm, 4); // sensitive | |
1403 | ||
79575d04 | 1404 | |
37831078 | 1405 | //---------------------------------------------------------- |
1406 | // TPc Upper Sectors | |
1407 | //---------------------------------------------------------- | |
1408 | ||
1409 | Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow(); | |
1410 | Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp(); | |
1411 | ||
1412 | dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01; | |
1413 | dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01; | |
79575d04 | 1414 | dm[2] = 0.5*(250. - 5.e-3); |
37831078 | 1415 | dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge); |
1416 | ||
1417 | gMC->Gsvolu("TPUS", "TRD1", idtmed[2], dm, 4); // sensitive | |
1418 | ||
1419 | ||
37831078 | 1420 | |
79575d04 | 1421 | // sensitive strips |
37831078 | 1422 | |
1423 | gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive | |
1424 | ||
1425 | Int_t nofStrips,nstr; | |
1426 | Float_t r1,r2,zs; | |
1427 | Float_t stripThick = 0.01; // 100 microns | |
1428 | Float_t deadSpace; | |
1429 | ||
1430 | // inner sector | |
1431 | ||
d4c354b9 | 1432 | |
1433 | // if all lower sectors selected define only 1 strip | |
1434 | ||
1435 | nofStrips=((fSecAL <0)||(fSecAL>=0 && fSens<0)) ? 1 : fTPCParam->GetNRowLow(); | |
37831078 | 1436 | deadSpace = fTPCParam->GetInnerWireMount(); |
1437 | ||
79575d04 | 1438 | dm[2] = 0.5*(250. - 5.e-3); |
1439 | dm[3] = 0.5 * stripThick; | |
d4c354b9 | 1440 | |
37831078 | 1441 | for(nstr=0;nstr<nofStrips;nstr++){ |
1442 | ||
1443 | r1 = fTPCParam->GetPadRowRadiiLow(nstr); | |
1444 | r2 = r1 + stripThick; | |
1445 | dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace; | |
1446 | dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace; | |
1447 | zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge); | |
1448 | zs += r1; | |
1449 | zs += dm[3]; | |
1450 | ||
1451 | gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4); | |
1452 | ||
37831078 | 1453 | |
1454 | } | |
1455 | ||
d4c354b9 | 1456 | // strips only if several upper sectors selected end fSens > 0 |
1457 | ||
1458 | if(fSecAU >=0 && fSens >0){ | |
1459 | ||
37831078 | 1460 | Int_t nsSave = nofStrips; |
1461 | ||
1462 | // outer sector | |
1463 | ||
1464 | nofStrips = fTPCParam->GetNRowUp(); | |
1465 | deadSpace = fTPCParam->GetOuterWireMount(); | |
1466 | ||
79575d04 | 1467 | dm[2] = 0.5*(250. - 5.e-3); |
37831078 | 1468 | dm[3] = 0.5 * stripThick; |
d4c354b9 | 1469 | |
37831078 | 1470 | |
1471 | for(nstr=0;nstr<nofStrips;nstr++){ | |
1472 | ||
1473 | r1 = fTPCParam->GetPadRowRadiiUp(nstr); | |
1474 | r2 = r1 + stripThick; | |
1475 | dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace; | |
1476 | dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace; | |
1477 | zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge); | |
1478 | zs += r1; | |
1479 | zs += dm[3]; | |
1480 | ||
1481 | gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4); | |
1482 | ||
1483 | } | |
79575d04 | 1484 | } |
1485 | ||
37831078 | 1486 | |
1487 | //------------------------------------------------------- | |
1488 | // positioning of the empty spaces into the main wheel | |
1489 | // and readout chambers and sectors into the drift gas | |
1490 | //------------------------------------------------------- | |
1491 | ||
1492 | Float_t rCenter,xc,yc; | |
1493 | Float_t rInner,rOuter; // center of the inner and outer chamber | |
1494 | ||
1495 | rCenter = rLow+dR; | |
1496 | ||
1497 | rInner = 108.07; | |
1498 | rOuter = 190.68; | |
1499 | ||
79575d04 | 1500 | |
37831078 | 1501 | for(Int_t ns=0; ns<nInnerSector;ns++){ |
1502 | ||
1503 | phi1 = ns * innerOpenAngle + innerAngleShift; | |
1504 | phi1 *= kRaddeg; // in degrees | |
1505 | ||
1506 | phi1 = (Float_t)TMath::Nint(phi1) + 270.; | |
1507 | ||
1508 | if (phi1 > 360.) phi1 -= 360.; | |
1509 | ||
1510 | theta1 = 90.; | |
1511 | phi2 = 90.; | |
1512 | theta2 = 180.; | |
1513 | phi3 = ns * innerOpenAngle + innerAngleShift; | |
1514 | phi3 *= kRaddeg; // in degrees | |
1515 | ||
1516 | phi3 = (Float_t)TMath::Nint(phi3); | |
1517 | ||
1518 | if(phi3 > 360.) phi3 -= 360.; | |
1519 | ||
1520 | theta3 = 90.; | |
1521 | ||
1522 | // "holes"->End plate | |
1523 | ||
1524 | xc = rCenter*TMath::Cos(phi3*kDegrad); | |
1525 | yc = rCenter*TMath::Sin(phi3*kDegrad); | |
1526 | ||
1527 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1528 | ||
1529 | gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY"); | |
1530 | ||
1531 | // TSCE->TSWC (services wheel volumes) | |
1532 | ||
1533 | xc = 166.142*TMath::Cos(phi3*kDegrad); | |
1534 | yc = 166.142*TMath::Sin(phi3*kDegrad); | |
1535 | ||
1536 | gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY"); | |
1537 | gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY"); | |
1538 | ||
79575d04 | 1539 | |
37831078 | 1540 | // readout chambers->TDGN (drift gas) |
1541 | ||
1542 | xc = rInner*TMath::Cos(phi3*kDegrad); | |
1543 | yc = rInner*TMath::Sin(phi3*kDegrad); | |
1544 | ||
1545 | gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY"); | |
1546 | ||
1547 | // here lower sectors | |
1548 | ||
1549 | if(fSecAL <0){ | |
1550 | ||
1551 | // all lower sectors are positioned | |
1552 | ||
79575d04 | 1553 | gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1554 | gMC-> |
79575d04 | 1555 | Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1556 | } |
1557 | else{ | |
1558 | ||
1559 | // only selected sectors are positioned (up to 6 sectors) | |
1560 | ||
1561 | for(Int_t sel=0;sel<6;sel++){ | |
1562 | ||
1563 | if(fSecLows[sel] == ns){ | |
79575d04 | 1564 | gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1565 | } |
1566 | else if(fSecLows[sel] == ns+nInnerSector){ | |
1567 | gMC-> | |
79575d04 | 1568 | Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1569 | } |
1570 | } | |
1571 | } // lower sectors finished | |
79575d04 | 1572 | |
1573 | ||
37831078 | 1574 | xc = rOuter*TMath::Cos(phi3*kDegrad); |
1575 | yc = rOuter*TMath::Sin(phi3*kDegrad); | |
1576 | ||
1577 | gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY"); | |
1578 | ||
1579 | // here upper sectors | |
1580 | ||
1581 | if(fSecAU <0){ | |
1582 | ||
1583 | // all upper sectors | |
1584 | ||
79575d04 | 1585 | gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1586 | gMC-> |
79575d04 | 1587 | Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1588 | } |
1589 | else{ | |
1590 | ||
1591 | // only selected sectors (up to 12) | |
1592 | ||
1593 | for(Int_t sel=0;sel<12;sel++){ | |
1594 | if(fSecUps[sel] == ns+2*nInnerSector){ | |
79575d04 | 1595 | gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1596 | } |
1597 | else if(fSecUps[sel] == ns+2*nInnerSector+nOuterSector){ | |
1598 | gMC-> | |
79575d04 | 1599 | Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1600 | } |
1601 | } | |
1602 | } // upper sectors finished | |
1603 | ||
79575d04 | 1604 | |
37831078 | 1605 | nRotMat++; |
1606 | ||
79575d04 | 1607 | theta2 = 0.; // reflection |
37831078 | 1608 | |
1609 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1610 | ||
1611 | xc = rInner*TMath::Cos(phi3*kDegrad); | |
1612 | yc = rInner*TMath::Sin(phi3*kDegrad); | |
1613 | ||
1614 | gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY"); | |
1615 | ||
1616 | xc = rOuter*TMath::Cos(phi3*kDegrad); | |
1617 | yc = rOuter*TMath::Sin(phi3*kDegrad); | |
1618 | ||
1619 | gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY"); | |
1620 | ||
1621 | nRotMat++; | |
1622 | ||
37831078 | 1623 | } |
37831078 | 1624 | // TPMW->TPC |
1625 | ||
1626 | gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY"); | |
79575d04 | 1627 | gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[0],"ONLY"); |
37831078 | 1628 | |
79575d04 | 1629 | //--------------------------------------------------------- |
1630 | // Tpc High Voltage Membrane - 100 microns of mylar | |
1631 | //--------------------------------------------------------- | |
37831078 | 1632 | |
79575d04 | 1633 | dm[0]=82.8; |
1634 | dm[1]=252.; | |
1635 | dm[2]=0.005; | |
37831078 | 1636 | |
79575d04 | 1637 | gMC->Gsvolu("THVM","TUBE",idtmed[8],dm,3); |
37831078 | 1638 | |
79575d04 | 1639 | gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY"); |
37831078 | 1640 | |
79575d04 | 1641 | // Tpc High Voltage membrane Holders |
37831078 | 1642 | |
79575d04 | 1643 | gMC->Gsvolu("THVH","TUBE",idtmed[4],dm,0); |
37831078 | 1644 | |
79575d04 | 1645 | |
37831078 | 1646 | |
79575d04 | 1647 | // inner |
37831078 | 1648 | |
79575d04 | 1649 | dm[0]=79.3; |
1650 | dm[1]=82.8; | |
1651 | dm[2]=0.2; | |
37831078 | 1652 | |
79575d04 | 1653 | gMC->Gsposp("THVH",1,"TDGN",0.,0.,0.,0,"ONLY",dm,3); |
1654 | ||
1655 | // outer | |
1656 | ||
1657 | dm[0]= 252.; | |
1658 | dm[1]= 257.9; | |
1659 | dm[2]= 0.4; | |
1660 | ||
1661 | gMC->Gsposp("THVH",2,"TDGN",0.,0.,0.,0,"ONLY",dm,3); | |
37831078 | 1662 | |
1663 | //---------------------------------------------------------- | |
1664 | // TPc Support Rods - MAKROLON | |
1665 | //---------------------------------------------------------- | |
1666 | ||
1667 | dm[0]= 0.9; | |
1668 | dm[1]= 1.2; | |
37831078 | 1669 | |
79575d04 | 1670 | gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,0); // inner and outer rods differ |
37831078 | 1671 | |
79575d04 | 1672 | |
1673 | for(Int_t nrod=0;nrod<18;nrod++){ | |
37831078 | 1674 | Float_t angle=innerOpenAngle*(Float_t)nrod; |
1675 | ||
79575d04 | 1676 | xc=81.5*TMath::Cos(angle); |
1677 | yc=81.5*TMath::Sin(angle); | |
1678 | ||
1679 | dm[2]=126.7; | |
37831078 | 1680 | |
79575d04 | 1681 | gMC->Gsposp("TPSR",nrod+1,"TDGN",xc,yc,126.9,0,"ONLY",dm,3); |
1682 | gMC->Gsposp("TPSR",nrod+19,"TDGN",xc,yc,-126.9,0,"ONLY",dm,3); | |
37831078 | 1683 | |
79575d04 | 1684 | dm[2]=126.6; |
37831078 | 1685 | |
79575d04 | 1686 | xc=254.25*TMath::Cos(angle); |
1687 | yc=254.25*TMath::Sin(angle); | |
1688 | ||
1689 | // rod number 54 contans the HV cable | |
37831078 | 1690 | |
79575d04 | 1691 | if(nrod<17) { |
1692 | gMC->Gsposp("TPSR",nrod+37,"TDGN",xc,yc,127.,0,"ONLY",dm,3); | |
1693 | gMC->Gsposp("TPSR",nrod+54,"TDGN",xc,yc,-127.,0,"ONLY",dm,3); | |
1694 | } | |
1695 | ||
37831078 | 1696 | } |
1697 | ||
1698 | //---------------------------------------------------------- | |
79575d04 | 1699 | // Tpc High Voltage Rod - MAKROLON + Copper cable |
37831078 | 1700 | //---------------------------------------------------------- |
1701 | ||
1702 | // rod with cable (Left) | |
1703 | ||
1704 | dm[0]=0.; | |
1705 | dm[1]=2.25; | |
79575d04 | 1706 | dm[2]=126.6; |
37831078 | 1707 | |
1708 | gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3); | |
1709 | ||
1710 | // HV cable | |
1711 | ||
1712 | dm[0]=0.; | |
1713 | dm[1]=0.3; | |
79575d04 | 1714 | dm[2]=126.6; |
37831078 | 1715 | |
79575d04 | 1716 | gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3); |
37831078 | 1717 | |
1718 | // empty space | |
1719 | ||
1720 | dm[0]=0.3; | |
1721 | dm[1]=1.; | |
79575d04 | 1722 | dm[2]=126.6; |
37831078 | 1723 | |
1724 | gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3); | |
1725 | ||
1726 | gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY"); | |
1727 | gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY"); | |
1728 | ||
1729 | // rod without cable | |
1730 | ||
1731 | dm[0]=1.8; | |
1732 | dm[1]=2.25; | |
79575d04 | 1733 | dm[2]=126.6; |
37831078 | 1734 | |
1735 | gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3); | |
1736 | ||
79575d04 | 1737 | gMC->Gspos("THVL",1,"TDGN",xc,yc,-127.,0,"ONLY"); |
1738 | gMC->Gspos("THVR",1,"TDGN",xc,yc,127.,0,"ONLY"); | |
37831078 | 1739 | |
1740 | gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY"); | |
79575d04 | 1741 | |
37831078 | 1742 | // services wheel cover -> wheel |
1743 | ||
1744 | ||
1745 | gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY"); | |
1746 | gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY"); | |
1747 | ||
1748 | ||
1749 | // put the wheel into the TPC | |
1750 | ||
1751 | gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY"); | |
1752 | gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY"); | |
1753 | ||
79575d04 | 1754 | // |
1755 | ||
37831078 | 1756 | gMC->Gsord("TPMW",6); |
79575d04 | 1757 | gMC->Gsord("TSSW",6); |
1758 | gMC->Gsord("TSWC",6); | |
d4c354b9 | 1759 | if(fSecAL >=0) gMC->Gsord("TPLS",3); |
1760 | if(fSecAU >=0 && fSens >0) gMC->Gsord("TPUS",3); | |
37831078 | 1761 | gMC->Gsord("TDGN",6); |
37831078 | 1762 | |
1763 | // put the TPC into ALIC (main mother volume) | |
1764 | ||
79575d04 | 1765 | gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY"); |
1766 | ||
1767 | ||
37831078 | 1768 | |
1769 | } // end of function | |
1770 | ||
1771 | //_____________________________________________________________________________ | |
1772 | void AliTPCv2::DrawDetector() | |
1773 | { | |
1774 | // | |
1775 | // Draw a shaded view of the Time Projection Chamber version 1 | |
1776 | // | |
1777 | ||
1778 | // Set everything unseen | |
1779 | gMC->Gsatt("*", "seen", -1); | |
1780 | // | |
1781 | // Set ALIC mother transparent | |
1782 | gMC->Gsatt("ALIC","SEEN",0); | |
1783 | // | |
1784 | // Set the volumes visible | |
1785 | // | |
1786 | ||
1787 | gMC->Gsatt("TPC ","SEEN",0); | |
1788 | gMC->Gsatt("TOIN","SEEN",1); | |
1789 | gMC->Gsatt("TOIN","COLO",7); | |
37831078 | 1790 | gMC->Gsatt("TOCV","SEEN",1); |
1791 | gMC->Gsatt("TOCV","COLO",4); | |
1792 | gMC->Gsatt("TSA1","SEEN",0); | |
1793 | gMC->Gsatt("TSA2","SEEN",0); | |
1794 | gMC->Gsatt("TSA3","SEEN",0); | |
79575d04 | 1795 | gMC->Gsatt("TSA4","SEEN",0); |
1796 | gMC->Gsatt("TSA5","SEEN",0); | |
37831078 | 1797 | gMC->Gsatt("TOFC","SEEN",1); |
1798 | gMC->Gsatt("TOFC","COLO",4); | |
37831078 | 1799 | gMC->Gsatt("TSA6","SEEN",0); |
1800 | gMC->Gsatt("TSA7","SEEN",0); | |
79575d04 | 1801 | gMC->Gsatt("TSA8","SEEN",0); |
37831078 | 1802 | gMC->Gsatt("TIIN","SEEN",1); |
79575d04 | 1803 | gMC->Gsatt("TIIN","COLO",7); |
1804 | gMC->Gsatt("TII1","SEEN",0); | |
1805 | gMC->Gsatt("TIFC","SEEN",1); | |
1806 | gMC->Gsatt("TIFC","COLO",4); | |
1807 | gMC->Gsatt("TSA9","SEEN",0); | |
37831078 | 1808 | gMC->Gsatt("TS10","SEEN",0); |
1809 | gMC->Gsatt("TS11","SEEN",0); | |
1810 | gMC->Gsatt("TS12","SEEN",0); | |
37831078 | 1811 | gMC->Gsatt("TS13","SEEN",0); |
1812 | gMC->Gsatt("TS14","SEEN",0); | |
79575d04 | 1813 | gMC->Gsatt("TICC","SEEN",0); |
1814 | gMC->Gsatt("TICM","SEEN",0); | |
37831078 | 1815 | gMC->Gsatt("TS15","SEEN",0); |
1816 | gMC->Gsatt("TS16","SEEN",0); | |
37831078 | 1817 | gMC->Gsatt("TS17","SEEN",0); |
79575d04 | 1818 | gMC->Gsatt("TS18","SEEN",0); |
1819 | gMC->Gsatt("TS19","SEEN",0); | |
1820 | gMC->Gsatt("TPJ1","SEEN",0); | |
1821 | gMC->Gsatt("TPJ2","SEEN",0); | |
1822 | gMC->Gsatt("TICS","SEEN",0); | |
1823 | gMC->Gsatt("TDGN","SEEN",0); | |
37831078 | 1824 | gMC->Gsatt("TIRC","SEEN",0); |
1825 | gMC->Gsatt("TIC1","SEEN",1); | |
1826 | gMC->Gsatt("TIPP","SEEN",0); | |
1827 | gMC->Gsatt("TIC3","SEEN",0); | |
1828 | gMC->Gsatt("TRCE","SEEN",0); | |
1829 | gMC->Gsatt("TPSC","SEEN",0); | |
79575d04 | 1830 | gMC->Gsatt("TPCC","SEEN",0); |
37831078 | 1831 | gMC->Gsatt("TORC","SEEN",0); |
1832 | gMC->Gsatt("TOPP","SEEN",0); | |
1833 | gMC->Gsatt("TOC3","SEEN",0); | |
1834 | gMC->Gsatt("TOC1","SEEN",1); | |
1835 | gMC->Gsatt("TSSW","SEEN",1); | |
1836 | gMC->Gsatt("TSWC","SEEN",1); | |
37831078 | 1837 | gMC->Gsatt("TSSW","COLO",3); |
1838 | gMC->Gsatt("TSWC","COLO",3); | |
1839 | gMC->Gsatt("TSCE","COLO",6); | |
79575d04 | 1840 | gMC->Gsatt("TSCE","SEEN",1); |
37831078 | 1841 | gMC->Gsatt("TWES","SEEN",0); |
1842 | gMC->Gsatt("TSWB","SEEN",0); | |
1843 | gMC->Gsatt("TPEL","SEEN",0); | |
1844 | gMC->Gsatt("TPMW","SEEN",1); | |
37831078 | 1845 | gMC->Gsatt("TESR","SEEN",1); |
1846 | gMC->Gsatt("TPMW","COLO",12); | |
37831078 | 1847 | gMC->Gsatt("TIC1","COLO",5); |
79575d04 | 1848 | gMC->Gsatt("TOC1","COLO",5); |
37831078 | 1849 | gMC->Gsatt("TESB","SEEN",0); |
37831078 | 1850 | gMC->Gsatt("THVM","SEEN",1); |
1851 | gMC->Gsatt("THVM","COLO",11); | |
79575d04 | 1852 | gMC->Gsatt("THVH","SEEN",0); |
1853 | gMC->Gsatt("TPSR","SEEN",0); | |
37831078 | 1854 | gMC->Gsatt("THVL","SEEN",0); |
79575d04 | 1855 | gMC->Gsatt("THVC","SEEN",0); |
37831078 | 1856 | gMC->Gsatt("THVE","SEEN",0); |
1857 | gMC->Gsatt("THVR","SEEN",0); | |
79575d04 | 1858 | gMC->Gsatt("TPSS","SEEN",0); |
1859 | gMC->Gsatt("TPUS","SEEN",0); | |
1860 | gMC->Gsatt("TPLS","SEEN",0); | |
37831078 | 1861 | |
1862 | // | |
1863 | gMC->Gdopt("hide", "on"); | |
1864 | gMC->Gdopt("shad", "on"); | |
1865 | gMC->Gsatt("*", "fill", 7); | |
1866 | gMC->SetClipBox("."); | |
1867 | gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.); | |
1868 | gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.); | |
1869 | gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.); | |
1870 | gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.); | |
1871 | gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290); | |
1872 | gMC->DefaultRange(); | |
1873 | gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025); | |
1874 | gMC->Gdhead(1111, "Time Projection Chamber"); | |
1875 | gMC->Gdman(18, 4, "MAN"); | |
1876 | gMC->Gdopt("hide","off"); | |
1877 | } | |
1878 | ||
1879 | //_____________________________________________________________________________ | |
1880 | void AliTPCv2::CreateMaterials() | |
1881 | { | |
1882 | // | |
1883 | // Define materials for version 2 of the Time Projection Chamber | |
1884 | // | |
1885 | ||
1886 | AliTPC::CreateMaterials(); | |
1887 | } | |
1888 | ||
1889 | //_____________________________________________________________________________ | |
1890 | void AliTPCv2::Init() | |
1891 | { | |
1892 | // | |
1893 | // Initialises version 2 of the TPC after that it has been built | |
1894 | // | |
1895 | ||
1896 | Int_t *idtmed = fIdtmed->GetArray(); | |
1897 | ||
1898 | AliTPC::Init(); | |
d4c354b9 | 1899 | |
1900 | ||
1901 | ||
1902 | fIdSens=gMC->VolId("TPSS"); | |
1903 | ||
1904 | fIdLSec=gMC->VolId("TPLS"); // lower sector | |
37831078 | 1905 | fIdUSec=gMC->VolId("TPUS"); // upper sector |
1906 | ||
1907 | gMC->SetMaxNStep(30000); // max. number of steps increased | |
1908 | ||
1909 | gMC->Gstpar(idtmed[2],"LOSS",5); // specific energy loss | |
1910 | ||
1911 | printf("*** TPC version 2 initialized ***\n"); | |
1912 | printf("Maximum number of steps = %d\n",gMC->GetMaxNStep()); | |
1913 | ||
1914 | // | |
fe4da5cc | 1915 | |
1916 | } | |
1917 | ||
1918 | //_____________________________________________________________________________ | |
1919 | void AliTPCv2::StepManager() | |
1920 | { | |
1921 | // | |
1922 | // Called for every step in the Time Projection Chamber | |
1923 | // | |
1924 | ||
1925 | // | |
1926 | // parameters used for the energy loss calculations | |
1927 | // | |
73042f01 | 1928 | const Float_t kprim = 14.35; // number of primary collisions per 1 cm |
1929 | const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2 | |
1930 | const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation | |
fe4da5cc | 1931 | |
1932 | ||
73042f01 | 1933 | const Float_t kbig = 1.e10; |
fe4da5cc | 1934 | |
1935 | Int_t id,copy; | |
1936 | Float_t hits[4]; | |
1937 | Int_t vol[2]; | |
37831078 | 1938 | TLorentzVector p; |
fe4da5cc | 1939 | |
37831078 | 1940 | vol[1]=0; // preset row number to 0 |
fe4da5cc | 1941 | |
1942 | // | |
1943 | ||
73042f01 | 1944 | gMC->SetMaxStep(kbig); |
fe4da5cc | 1945 | |
0a6d8768 | 1946 | if(!gMC->IsTrackAlive()) return; // particle has disappeared |
fe4da5cc | 1947 | |
cfce8870 | 1948 | Float_t charge = gMC->TrackCharge(); |
fe4da5cc | 1949 | |
1950 | if(TMath::Abs(charge)<=0.) return; // take only charged particles | |
1951 | ||
37831078 | 1952 | // check the sensitive volume |
1953 | ||
1954 | id = gMC->CurrentVolID(copy); // current volume Id | |
1955 | ||
1956 | if(id == fIdLSec){ | |
1957 | vol[0] = copy-1; // lower sector number | |
1958 | } | |
1959 | else if(id == fIdUSec){ | |
1960 | vol[0] = copy+fTPCParam->GetNInnerSector()-1; // upper sector number | |
1961 | } | |
1962 | else if(id == fIdSens && gMC->IsTrackEntering()){ | |
1963 | ||
1964 | // track is entering the sensitive strip | |
1965 | ||
1966 | vol[1]= copy-1; // row number (absolute) | |
1967 | ||
1968 | // sector type | |
1969 | ||
1970 | id = gMC->CurrentVolOffID(1,copy); | |
1971 | ||
1972 | if(id == fIdLSec){ | |
1973 | ||
1974 | // lower sector | |
1975 | ||
1976 | vol[0] = copy-1; // sector number | |
1977 | ||
fe4da5cc | 1978 | } |
37831078 | 1979 | else { |
1980 | ||
1981 | // upper sector | |
1982 | ||
1983 | vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number | |
6a905708 | 1984 | vol[1] -= fTPCParam->GetNRowLow(); // row number (starts also from 0) |
37831078 | 1985 | |
1986 | } | |
1987 | ||
1988 | if(vol[1] == 0){ | |
1989 | ||
1990 | // because Jouri wants to have this | |
1991 | ||
1992 | gMC->TrackMomentum(p); | |
1993 | hits[0]=p[0]; | |
1994 | hits[1]=p[1]; | |
1995 | hits[2]=p[2]; | |
fe4da5cc | 1996 | hits[3]=0.; // this hit has no energy loss |
6a905708 | 1997 | // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
1998 | ||
1999 | AddHit(gAlice->CurrentTrack(), vol,hits); //MI change | |
37831078 | 2000 | |
930ee558 | 2001 | } |
37831078 | 2002 | |
930ee558 | 2003 | gMC->TrackPosition(p); |
2004 | hits[0]=p[0]; | |
2005 | hits[1]=p[1]; | |
2006 | hits[2]=p[2]; | |
2007 | hits[3]=0.; // this hit has no energy loss | |
6a905708 | 2008 | // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
2009 | ||
2010 | AddHit(gAlice->CurrentTrack(), vol,hits); //MI change | |
930ee558 | 2011 | |
37831078 | 2012 | } |
fe4da5cc | 2013 | else return; |
37831078 | 2014 | |
2015 | //----------------------------------------------------------------- | |
fe4da5cc | 2016 | // charged particle is in the sensitive volume |
37831078 | 2017 | //----------------------------------------------------------------- |
fe4da5cc | 2018 | |
cfce8870 | 2019 | if(gMC->TrackStep() > 0) { |
fe4da5cc | 2020 | |
73042f01 | 2021 | Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1; |
fe4da5cc | 2022 | nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV |
2023 | ||
37831078 | 2024 | gMC->TrackPosition(p); |
2025 | hits[0]=p[0]; | |
2026 | hits[1]=p[1]; | |
2027 | hits[2]=p[2]; | |
fe4da5cc | 2028 | hits[3]=(Float_t)nel; |
2029 | ||
2030 | // Add this hit | |
2031 | ||
6a905708 | 2032 | // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
2033 | if (fHitType&&2){ | |
2034 | gMC->TrackMomentum(p); | |
2035 | Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]); | |
2036 | Float_t precision = (momentum>0.1) ? 0.002 :0.01; | |
2037 | fTrackHits->SetHitPrecision(precision); | |
2038 | } | |
2039 | AddHit(gAlice->CurrentTrack(), vol,hits); //MI change | |
fe4da5cc | 2040 | |
2041 | } | |
2042 | ||
2043 | // Stemax calculation for the next step | |
2044 | ||
2045 | Float_t pp; | |
0a6d8768 | 2046 | TLorentzVector mom; |
2047 | gMC->TrackMomentum(mom); | |
2048 | Float_t ptot=mom.Rho(); | |
73042f01 | 2049 | Float_t betaGamma = ptot/gMC->TrackMass(); |
fe4da5cc | 2050 | |
69e40cce | 2051 | Int_t pid=gMC->TrackPid(); |
cc80f89e | 2052 | if((pid==kElectron || pid==kPositron) && ptot > 0.002) |
fe4da5cc | 2053 | { |
73042f01 | 2054 | pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau! |
fe4da5cc | 2055 | } |
2056 | else | |
2057 | { | |
595bf2c3 | 2058 | |
07521998 | 2059 | betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg |
595bf2c3 | 2060 | pp=kprim*BetheBloch(betaGamma); |
2061 | ||
fe4da5cc | 2062 | if(TMath::Abs(charge) > 1.) pp *= (charge*charge); |
2063 | } | |
2064 | ||
2065 | Float_t random[1]; | |
cfce8870 | 2066 | gMC->Rndm(random,1); // good, old GRNDM from Geant3 |
fe4da5cc | 2067 | |
2068 | Double_t rnd = (Double_t)random[0]; | |
2069 | ||
cfce8870 | 2070 | gMC->SetMaxStep(-TMath::Log(rnd)/pp); |
fe4da5cc | 2071 | |
2072 | } | |
2073 | ||
2074 | //_____________________________________________________________________________ | |
2075 | Float_t AliTPCv2::BetheBloch(Float_t bg) | |
2076 | { | |
2077 | // | |
2078 | // Bethe-Bloch energy loss formula | |
2079 | // | |
73042f01 | 2080 | const Double_t kp1=0.76176e-1; |
2081 | const Double_t kp2=10.632; | |
2082 | const Double_t kp3=0.13279e-4; | |
2083 | const Double_t kp4=1.8631; | |
2084 | const Double_t kp5=1.9479; | |
fe4da5cc | 2085 | |
2086 | Double_t dbg = (Double_t) bg; | |
2087 | ||
2088 | Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg); | |
2089 | ||
73042f01 | 2090 | Double_t aa = TMath::Power(beta,kp4); |
2091 | Double_t bb = TMath::Power(1./dbg,kp5); | |
fe4da5cc | 2092 | |
73042f01 | 2093 | bb=TMath::Log(kp3+bb); |
fe4da5cc | 2094 | |
73042f01 | 2095 | return ((Float_t)((kp2-aa-bb)*kp1/aa)); |
fe4da5cc | 2096 | } |
73042f01 | 2097 | |
2098 |