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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 | $Log$ | |
79575d04 | 18 | Revision 1.34 2001/04/23 10:20:18 hristov |
19 | Constant casted to avoid ambiguity | |
20 | ||
07521998 | 21 | Revision 1.33 2001/04/20 08:16:47 kowal2 |
22 | Protection against too small betaGamma. Thanks to Ivana and Yves. | |
23 | ||
595bf2c3 | 24 | Revision 1.32 2001/03/13 13:07:34 kowal2 |
25 | Corrected bug in the TPC mother volume geometry. | |
26 | Thanks to A. Morsch | |
27 | ||
7ab50f40 | 28 | Revision 1.31 2000/11/30 11:48:50 kowal2 |
29 | TLorentzVector.h adde to satisfy the latest changes by Federico | |
30 | ||
a383b30d | 31 | Revision 1.30 2000/11/14 10:48:57 kowal2 |
32 | Correct material used for TSA4. Thanks to J. Barbosa. | |
33 | ||
2c668420 | 34 | Revision 1.29 2000/11/06 17:24:10 kowal2 |
35 | Corrected bug in the outer containment vessel and | |
36 | the outer field cage geometry. | |
37 | Thanks to J. Barbosa. | |
38 | ||
720b23b8 | 39 | Revision 1.28 2000/11/02 16:55:24 kowal2 |
40 | Corrected bug in the inner containment vessel geometry. | |
41 | Thanks to J. Belikov | |
42 | ||
08db548a | 43 | Revision 1.27 2000/11/02 07:24:11 kowal2 |
44 | Correction in the TPC geometry. | |
45 | Changes due to the new hit structure. | |
46 | ||
6a905708 | 47 | Revision 1.26 2000/10/05 16:16:29 kowal2 |
48 | Corrections of the hit recording algorithm. | |
49 | ||
d4c354b9 | 50 | Revision 1.25 2000/10/02 21:28:18 fca |
51 | Removal of useless dependecies via forward declarations | |
52 | ||
94de3818 | 53 | Revision 1.24 2000/08/28 10:02:30 kowal2 |
54 | Corrected bug in the StepManager | |
55 | ||
930ee558 | 56 | Revision 1.23 2000/07/10 20:57:39 hristov |
57 | Update of TPC code and macros by M.Kowalski | |
58 | ||
37831078 | 59 | Revision 1.22 2000/06/30 12:07:50 kowal2 |
60 | Updated from the TPC-PreRelease branch | |
61 | ||
73042f01 | 62 | Revision 1.21.2.4 2000/06/26 07:39:42 kowal2 |
63 | Changes to obey the coding rules | |
64 | ||
65 | Revision 1.21.2.3 2000/06/25 08:38:41 kowal2 | |
66 | Splitted from AliTPCtracking | |
67 | ||
68 | Revision 1.21.2.2 2000/06/16 12:58:13 kowal2 | |
69 | Changed parameter settings | |
70 | ||
71 | Revision 1.21.2.1 2000/06/09 07:15:07 kowal2 | |
72 | ||
73 | Defaults loaded automatically (hard-wired) | |
74 | Optional parameters can be set via macro called in the constructor | |
75 | ||
76 | Revision 1.21 2000/05/15 10:00:30 kowal2 | |
77 | Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova | |
78 | ||
e94dd9ca | 79 | Revision 1.20 2000/04/17 09:37:33 kowal2 |
80 | removed obsolete AliTPCDigitsDisplay.C | |
81 | ||
cc80f89e | 82 | Revision 1.19.8.2 2000/04/10 08:31:52 kowal2 |
83 | ||
84 | Different geometry for different sectors | |
85 | Updated readout chambers | |
86 | Some modifications to StepManager by J.Belikov | |
87 | ||
88 | Revision 1.19.8.1 2000/04/10 07:56:53 kowal2 | |
89 | Not used anymore - removed | |
90 | ||
91 | Revision 1.19 1999/11/04 17:28:07 fca | |
92 | Correct barrel part of HV Degrader | |
93 | ||
a5371c42 | 94 | Revision 1.18 1999/10/14 16:52:08 fca |
95 | Only use PDG codes and not GEANT ones | |
96 | ||
69e40cce | 97 | Revision 1.17 1999/10/08 06:27:23 fca |
98 | Corrected bug in the HV degrader geometry, thanks to G.Tabary | |
99 | ||
d183a600 | 100 | Revision 1.16 1999/10/04 13:39:54 fca |
101 | Correct array index problem | |
102 | ||
cdde5b1e | 103 | Revision 1.15 1999/09/29 09:24:34 fca |
104 | Introduction of the Copyright and cvs Log | |
105 | ||
4c039060 | 106 | */ |
107 | ||
73042f01 | 108 | // |
fe4da5cc | 109 | /////////////////////////////////////////////////////////////////////////////// |
110 | // // | |
111 | // Time Projection Chamber version 2 -- detailed TPC and slow simulation // | |
112 | // // | |
113 | //Begin_Html | |
114 | /* | |
1439f98e | 115 | <img src="picts/AliTPCv2Class.gif"> |
fe4da5cc | 116 | */ |
117 | //End_Html | |
118 | // // | |
119 | // // | |
120 | /////////////////////////////////////////////////////////////////////////////// | |
2a49965d | 121 | #include <stdlib.h> |
fe4da5cc | 122 | |
123 | #include <TMath.h> | |
bcac8ae4 | 124 | |
fe4da5cc | 125 | #include "AliTPCv2.h" |
cc80f89e | 126 | #include "AliTPCDigitsArray.h" |
fe4da5cc | 127 | #include "AliRun.h" |
94de3818 | 128 | #include "AliMC.h" |
fe4da5cc | 129 | #include "AliConst.h" |
69e40cce | 130 | #include "AliPDG.h" |
73042f01 | 131 | #include "AliTPCParam.h" |
132 | #include "AliTPCParamSR.h" | |
6a905708 | 133 | #include "AliTPCTrackHits.h" |
a383b30d | 134 | #include "TLorentzVector.h" |
6a905708 | 135 | |
8c555625 | 136 | |
fe4da5cc | 137 | ClassImp(AliTPCv2) |
138 | ||
139 | //_____________________________________________________________________________ | |
140 | AliTPCv2::AliTPCv2(const char *name, const char *title) : | |
141 | AliTPC(name, title) | |
142 | { | |
143 | // | |
144 | // Standard constructor for Time Projection Chamber version 2 | |
145 | // | |
37831078 | 146 | fIdSens=0; |
147 | fIdLSec=0; | |
148 | fIdUSec=0; | |
149 | ||
fe4da5cc | 150 | SetBufferSize(128000); |
73042f01 | 151 | |
152 | SetGasMixt(2,20,10,-1,0.9,0.1,0.); // Ne-CO2 90-10 | |
153 | ||
154 | // Default sectors | |
155 | ||
156 | SetSecAL(4); | |
157 | SetSecAU(4); | |
158 | SetSecLows(1, 2, 3, 19, 20, 21); | |
159 | SetSecUps(37, 38, 39, 37+18, 38+18, 39+18, -1, -1, -1, -1, -1, -1); | |
37831078 | 160 | SetSens(1); // sensitive strips set |
73042f01 | 161 | |
162 | if (fTPCParam) | |
163 | fTPCParam->Write(fTPCParam->GetTitle()); | |
fe4da5cc | 164 | } |
165 | ||
166 | //_____________________________________________________________________________ | |
167 | void AliTPCv2::CreateGeometry() | |
168 | { | |
169 | // | |
170 | // Create the geometry of Time Projection Chamber version 2 | |
171 | // | |
172 | //Begin_Html | |
173 | /* | |
37831078 | 174 | <img src="picts/AliTPC.gif"> |
fe4da5cc | 175 | */ |
176 | //End_Html | |
177 | //Begin_Html | |
178 | /* | |
1439f98e | 179 | <img src="picts/AliTPCv2Tree.gif"> |
fe4da5cc | 180 | */ |
181 | //End_Html | |
182 | ||
8c555625 | 183 | |
1283eee5 | 184 | Int_t *idtmed = fIdtmed->GetArray(); |
185 | ||
37831078 | 186 | Float_t dm[50]; |
62a73ee5 | 187 | Int_t idrotm[120]; |
1283eee5 | 188 | |
189 | Int_t nRotMat = 0; | |
190 | ||
d4c354b9 | 191 | Int_t i,ifl1=0; |
1283eee5 | 192 | |
37831078 | 193 | // number of sectors |
194 | ||
1283eee5 | 195 | Int_t nInnerSector = fTPCParam->GetNInnerSector()/2; |
196 | Int_t nOuterSector = fTPCParam->GetNOuterSector()/2; | |
fe4da5cc | 197 | |
198 | // --------------------------------------------------- | |
199 | // sector specification check | |
200 | // --------------------------------------------------- | |
201 | if (fSecAL >= 0) { | |
202 | ifl1 = 0; | |
203 | ||
204 | for (i = 0; i < 6; ++i) { | |
1283eee5 | 205 | if (fSecLows[i] >= 0 && fSecLows[i] < 2*nInnerSector) { |
fe4da5cc | 206 | ifl1 = 1; |
207 | printf("*** SECTOR %d selected\n",fSecLows[i]); | |
208 | } | |
209 | } | |
210 | ||
211 | } else { | |
212 | printf("*** ALL LOWER SECTORS SELECTED ***\n"); | |
8c555625 | 213 | ifl1 = 1; |
fe4da5cc | 214 | } |
215 | ||
d4c354b9 | 216 | if (ifl1 == 0) { |
217 | printf("*** ERROR: AT LEAST ONE LOWER SECTOR MUST BE SPECIFIED ***\n"); | |
218 | printf("!!! PROGRAM STOPPED !!!\n"); | |
219 | exit(1); | |
220 | } | |
221 | ||
fe4da5cc | 222 | if (fSecAU >= 0) { |
fe4da5cc | 223 | |
224 | for (i = 0; i < 12; ++i) { | |
1283eee5 | 225 | if (fSecUps[i] > 2*nInnerSector-1 && |
226 | fSecUps[i] < 2*(nInnerSector+nOuterSector)) { | |
fe4da5cc | 227 | printf("*** SECTOR %d selected\n",fSecUps[i]); |
228 | } | |
229 | } | |
230 | ||
231 | } else { | |
232 | printf("*** ALL UPPER SECTORS SELECTED ***\n"); | |
233 | } | |
234 | ||
d4c354b9 | 235 | |
37831078 | 236 | |
237 | //-------------------------------------------------------------------- | |
238 | ||
239 | // | |
79575d04 | 240 | // Mother volume TPC (Air) - all volumes will be positioned in it |
37831078 | 241 | // |
79575d04 | 242 | |
37831078 | 243 | dm[0]=0.; |
244 | dm[1]=360.; | |
79575d04 | 245 | dm[2]=8.; |
1283eee5 | 246 | |
37831078 | 247 | // |
1283eee5 | 248 | |
79575d04 | 249 | dm[3]=-283.7; |
250 | dm[4]=65.6; | |
251 | dm[5]=278.; | |
1283eee5 | 252 | |
37831078 | 253 | // |
1283eee5 | 254 | |
79575d04 | 255 | dm[6]=-253.6; |
256 | dm[7]=65.6; | |
257 | dm[8]=278.; | |
1283eee5 | 258 | |
37831078 | 259 | // |
1283eee5 | 260 | |
79575d04 | 261 | dm[9]=-73.3; |
262 | dm[10]=60.9; | |
263 | dm[11]=278.; | |
1283eee5 | 264 | |
37831078 | 265 | // |
1283eee5 | 266 | |
79575d04 | 267 | dm[12]=-73.3; |
268 | dm[13]=56.9; | |
269 | dm[14]=278.; | |
1283eee5 | 270 | |
37831078 | 271 | // |
1283eee5 | 272 | |
79575d04 | 273 | dm[15]=73.3; |
274 | dm[16]=56.9; | |
275 | dm[17]=278.; | |
1283eee5 | 276 | |
37831078 | 277 | // |
1283eee5 | 278 | |
79575d04 | 279 | dm[18]=73.3; |
280 | dm[19]=60.9; | |
281 | dm[20]=278.; | |
1283eee5 | 282 | |
37831078 | 283 | // |
1283eee5 | 284 | |
79575d04 | 285 | dm[21]=253.6; |
286 | dm[22]=65.6; | |
287 | dm[23]=278.; | |
1283eee5 | 288 | |
37831078 | 289 | // |
1283eee5 | 290 | |
79575d04 | 291 | dm[24]=283.7; |
292 | dm[25]=65.6; | |
293 | dm[26]=278.; | |
294 | ||
295 | gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,27); | |
1283eee5 | 296 | |
79575d04 | 297 | // outer part |
1283eee5 | 298 | |
37831078 | 299 | //------------------------------------------------------------------- |
79575d04 | 300 | // Tpc Outer INsulator (CO2) - contains cont. vessel and field cage |
37831078 | 301 | //------------------------------------------------------------------- |
1283eee5 | 302 | |
37831078 | 303 | dm[0]= 0.; |
304 | dm[1]= 360.; | |
305 | dm[2]= 6.; | |
1283eee5 | 306 | |
37831078 | 307 | // |
1283eee5 | 308 | |
79575d04 | 309 | dm[3]=-253.6; |
310 | dm[4]=258.; | |
311 | dm[5]=275.5; | |
1283eee5 | 312 | |
37831078 | 313 | // |
1283eee5 | 314 | |
79575d04 | 315 | dm[6]=-250.6; |
316 | dm[7]=258.; | |
317 | dm[8]=275.5; | |
1283eee5 | 318 | |
37831078 | 319 | // |
cc80f89e | 320 | |
79575d04 | 321 | dm[9]=-250.6; |
322 | dm[10]=258.; | |
323 | dm[11]=278.; | |
1283eee5 | 324 | |
79575d04 | 325 | // |
1283eee5 | 326 | |
79575d04 | 327 | dm[12]=253.6; |
328 | dm[13]=258.; | |
329 | dm[14]=278.; | |
1283eee5 | 330 | |
37831078 | 331 | // |
1283eee5 | 332 | |
79575d04 | 333 | dm[15]=253.6; |
334 | dm[16]=264.8; | |
335 | dm[17]=278.; | |
1283eee5 | 336 | |
37831078 | 337 | // |
1283eee5 | 338 | |
79575d04 | 339 | dm[18]=256.6; |
340 | dm[19]=264.8; | |
341 | dm[20]=278.; | |
1283eee5 | 342 | |
79575d04 | 343 | gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21); |
1283eee5 | 344 | |
37831078 | 345 | //---------------------------------------------------------------- |
346 | // Tpc Outer Contaiment Vessel | |
347 | // mother volume - Al, daughters - composite (sandwich) | |
348 | //---------------------------------------------------------------- | |
79575d04 | 349 | |
350 | dm[0]=0.; | |
351 | dm[1]=360.; | |
720b23b8 | 352 | dm[2]=6.; |
1283eee5 | 353 | |
37831078 | 354 | // |
cc80f89e | 355 | |
79575d04 | 356 | dm[3]=-250.6; |
357 | dm[4]=270.4; | |
358 | dm[5]=278.; | |
1283eee5 | 359 | |
37831078 | 360 | // |
1283eee5 | 361 | |
79575d04 | 362 | dm[6]=-247.6; |
363 | dm[7]=270.4; | |
364 | dm[8]=278.; | |
1283eee5 | 365 | |
37831078 | 366 | // |
79575d04 | 367 | |
368 | dm[9]=-247.6; | |
369 | dm[10]=274.81; | |
370 | dm[11]=278.; | |
371 | ||
37831078 | 372 | // |
1283eee5 | 373 | |
79575d04 | 374 | dm[12]=253.6; |
375 | dm[13]=274.81; | |
376 | dm[14]=278.; | |
1283eee5 | 377 | |
720b23b8 | 378 | // |
1283eee5 | 379 | |
79575d04 | 380 | dm[15]=253.6; |
381 | dm[16]=264.8; | |
382 | dm[17]=278.; | |
1283eee5 | 383 | |
79575d04 | 384 | // |
720b23b8 | 385 | |
79575d04 | 386 | dm[18]=256.6; |
387 | dm[19]=264.8; | |
388 | dm[20]=278.; | |
720b23b8 | 389 | |
390 | gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21); | |
1283eee5 | 391 | |
79575d04 | 392 | // Daughter volumes - sandwich |
1283eee5 | 393 | |
37831078 | 394 | // Tpc SAndwich 1 - Al |
79575d04 | 395 | |
396 | dm[0]=274.81; | |
397 | dm[1]=278.; | |
398 | dm[2]=252.1; | |
1283eee5 | 399 | |
37831078 | 400 | gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3); |
1283eee5 | 401 | |
79575d04 | 402 | // Tpc SAndwich 2 - epoxy glue (I use Lexan) |
1283eee5 | 403 | |
37831078 | 404 | dm[0] += 5.e-3; |
405 | dm[1] -= 5.e-3; | |
79575d04 | 406 | |
407 | gMC->Gsvolu("TSA2","TUBE",idtmed[14],dm,3); | |
408 | ||
409 | // Tpc SAndwich 3 - Tedlar | |
410 | ||
411 | dm[0] += 0.01; | |
412 | dm[1] -= 0.01; | |
37831078 | 413 | |
79575d04 | 414 | gMC->Gsvolu("TSA3","TUBE",idtmed[9],dm,3); |
1283eee5 | 415 | |
8c555625 | 416 | |
79575d04 | 417 | // Tpc SAndwich 4 - fiber glass (G10) |
8c555625 | 418 | |
79575d04 | 419 | dm[0] += 5.e-3; |
420 | dm[1] -= 5.e-3; | |
8c555625 | 421 | |
79575d04 | 422 | gMC->Gsvolu("TSA4","TUBE",idtmed[12],dm,3); |
1283eee5 | 423 | |
79575d04 | 424 | // Tpc SAndwich 5 - NOMEX honeycomb |
1283eee5 | 425 | |
79575d04 | 426 | dm[0] += 0.075; |
427 | dm[1] -= 0.075; | |
37831078 | 428 | |
79575d04 | 429 | gMC->Gsvolu("TSA5","TUBE",idtmed[6],dm,3); |
430 | ||
431 | // 5->4->3->2->1->TCOV | |
8c555625 | 432 | |
79575d04 | 433 | |
434 | gMC->Gspos("TSA5",1,"TSA4",0.,0.,0.,0,"ONLY"); | |
37831078 | 435 | gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY"); |
436 | gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY"); | |
79575d04 | 437 | gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY"); |
fe4da5cc | 438 | |
79575d04 | 439 | gMC->Gspos("TSA1",1,"TOCV",0.,0.,3.,0,"ONLY"); |
fe4da5cc | 440 | |
37831078 | 441 | // TCOV-> TOIN |
fe4da5cc | 442 | |
37831078 | 443 | gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY"); |
fe4da5cc | 444 | |
37831078 | 445 | //------------------------------------------------------- |
446 | // Tpc Outer Field Cage | |
447 | // mother volume - Al, daughters - composite (sandwich) | |
448 | //------------------------------------------------------- | |
1283eee5 | 449 | |
37831078 | 450 | dm[0]=0.; |
451 | dm[1]=360.; | |
452 | dm[2]=6.; | |
1283eee5 | 453 | |
79575d04 | 454 | // |
455 | ||
456 | dm[3]=-253.6; | |
457 | dm[4]=258.; | |
458 | dm[5]=275.5; | |
1283eee5 | 459 | |
37831078 | 460 | // |
1283eee5 | 461 | |
79575d04 | 462 | dm[6]=-250.6; |
463 | dm[7]=258.; | |
464 | dm[8]=275.5; | |
1283eee5 | 465 | |
37831078 | 466 | // |
79575d04 | 467 | |
468 | dm[9]=-250.6; | |
469 | dm[10]=258.; | |
470 | dm[11]=260.05; | |
1283eee5 | 471 | |
37831078 | 472 | // |
1283eee5 | 473 | |
79575d04 | 474 | dm[12]=250.6; |
475 | dm[13]=258.; | |
476 | dm[14]=260.05; | |
1283eee5 | 477 | |
37831078 | 478 | // |
1283eee5 | 479 | |
79575d04 | 480 | dm[15]=250.6; |
481 | dm[16]=258.; | |
482 | dm[17]=275.5; | |
1283eee5 | 483 | |
37831078 | 484 | // |
1283eee5 | 485 | |
79575d04 | 486 | dm[18]=253.6; |
487 | dm[19]=258.; | |
488 | dm[20]=275.5; | |
1283eee5 | 489 | |
79575d04 | 490 | gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21); |
1283eee5 | 491 | |
37831078 | 492 | // Daughter volumes |
1283eee5 | 493 | |
79575d04 | 494 | // Tpc SAndwich 6 - Tedlar |
1283eee5 | 495 | |
37831078 | 496 | dm[0]= 258.; |
497 | dm[1]= 260.05; | |
79575d04 | 498 | dm[2]= 252.1; |
1283eee5 | 499 | |
79575d04 | 500 | gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3); |
1283eee5 | 501 | |
79575d04 | 502 | // Tpc SAndwich 7 - fiber glass |
1283eee5 | 503 | |
37831078 | 504 | dm[0] += 5.e-3; |
505 | dm[1] -= 5.e-3; | |
1283eee5 | 506 | |
79575d04 | 507 | gMC->Gsvolu("TSA7","TUBE",idtmed[12],dm,3); |
1283eee5 | 508 | |
1283eee5 | 509 | |
37831078 | 510 | // Tpc SAndwich 8 - NOMEX |
1283eee5 | 511 | |
37831078 | 512 | dm[0] += 0.02; |
513 | dm[1] -= 0.02; | |
1283eee5 | 514 | |
79575d04 | 515 | gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3); |
1283eee5 | 516 | |
79575d04 | 517 | // 8->7->6->TOFC |
1283eee5 | 518 | |
79575d04 | 519 | gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY"); |
520 | gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY"); | |
521 | gMC->Gspos("TSA6",1,"TOFC",0.,0.,0.,0,"ONLY"); | |
fe4da5cc | 522 | |
37831078 | 523 | // TOFC->TOIN |
fe4da5cc | 524 | |
79575d04 | 525 | gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY"); |
1283eee5 | 526 | |
37831078 | 527 | // TOIN->TPC |
1283eee5 | 528 | |
37831078 | 529 | gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY"); |
1283eee5 | 530 | |
79575d04 | 531 | // inner part |
1283eee5 | 532 | |
79575d04 | 533 | //-------------------------------------------------------------------- |
534 | // Tpc Inner INsulator (CO2) - inner f.c. will be placed there | |
535 | // Inner containment vessel will be placed directly in the TPC | |
536 | //-------------------------------------------------------------------- | |
1283eee5 | 537 | |
37831078 | 538 | dm[0]=0.; |
79575d04 | 539 | dm[1]=360.; |
540 | dm[2]=4.; | |
1283eee5 | 541 | |
79575d04 | 542 | // |
1283eee5 | 543 | |
79575d04 | 544 | dm[3]=-253.6; |
545 | dm[4]=65.9; | |
546 | dm[5]=79.2; | |
1283eee5 | 547 | |
37831078 | 548 | // |
1283eee5 | 549 | |
79575d04 | 550 | dm[6]=-73.3; |
551 | dm[7]=61.2; | |
552 | dm[8]=79.2; | |
1283eee5 | 553 | |
37831078 | 554 | // |
1283eee5 | 555 | |
79575d04 | 556 | dm[9]=73.3; |
557 | dm[10]=61.2; | |
558 | dm[11]=79.2; | |
1283eee5 | 559 | |
37831078 | 560 | // |
1283eee5 | 561 | |
79575d04 | 562 | dm[12]=253.6; |
563 | dm[13]=65.9; | |
564 | dm[14]=79.2; | |
1283eee5 | 565 | |
79575d04 | 566 | gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,15); |
1283eee5 | 567 | |
79575d04 | 568 | // the middle part of the F.C. is thinner - carve out the strip - Ne-CO2 |
1283eee5 | 569 | |
79575d04 | 570 | dm[0]=79.16; |
571 | dm[1]=79.2; | |
572 | dm[2]=88.; | |
1283eee5 | 573 | |
79575d04 | 574 | gMC->Gsvolu("TII1","TUBE",idtmed[1],dm,3); |
1283eee5 | 575 | |
79575d04 | 576 | gMC->Gspos("TII1",1,"TIIN",0.,0.,0.,0,"ONLY"); |
1283eee5 | 577 | |
79575d04 | 578 | //----------------------------------------------------- |
579 | // Tpc Inner Field Cage | |
580 | // mother volume - Al, daughters - composite (sandwich) | |
581 | //------------------------------------------------------ | |
1283eee5 | 582 | |
79575d04 | 583 | dm[0]=0.; |
584 | dm[1]=360.; | |
585 | dm[2]=10.; | |
1283eee5 | 586 | |
37831078 | 587 | // |
1283eee5 | 588 | |
79575d04 | 589 | dm[3]=-253.6; |
590 | dm[4]=70.3; | |
591 | dm[5]=79.2; | |
1283eee5 | 592 | |
37831078 | 593 | // |
1283eee5 | 594 | |
79575d04 | 595 | dm[6]=-250.6; |
596 | dm[7]=70.3; | |
597 | dm[8]=79.2; | |
1283eee5 | 598 | |
37831078 | 599 | // |
1283eee5 | 600 | |
79575d04 | 601 | dm[9]=-250.6; |
602 | dm[10]=77.05; | |
603 | dm[11]=79.2; | |
37831078 | 604 | |
605 | // | |
606 | ||
79575d04 | 607 | dm[12]=-88.; |
608 | dm[13]=77.05; | |
609 | dm[14]=79.2; | |
1283eee5 | 610 | |
37831078 | 611 | // |
1283eee5 | 612 | |
79575d04 | 613 | dm[15]=-88.; |
614 | dm[16]=77.09; | |
615 | dm[17]=79.16; | |
1283eee5 | 616 | |
617 | // | |
37831078 | 618 | |
79575d04 | 619 | dm[18]=88.; |
620 | dm[19]=77.09; | |
621 | dm[20]=79.16; | |
37831078 | 622 | |
1283eee5 | 623 | // |
624 | ||
79575d04 | 625 | dm[21]=88.; |
626 | dm[22]=77.05; | |
627 | dm[23]=79.2; | |
1283eee5 | 628 | |
37831078 | 629 | // |
1283eee5 | 630 | |
79575d04 | 631 | dm[24]=250.6; |
632 | dm[25]=77.05; | |
633 | dm[26]=79.2; | |
1283eee5 | 634 | |
37831078 | 635 | // |
1283eee5 | 636 | |
79575d04 | 637 | dm[27]=250.6; |
638 | dm[28]=70.3; | |
639 | dm[29]=79.2; | |
1283eee5 | 640 | |
37831078 | 641 | // |
1283eee5 | 642 | |
79575d04 | 643 | dm[30]=253.6; |
644 | dm[31]=70.3; | |
645 | dm[32]=79.2; | |
1283eee5 | 646 | |
79575d04 | 647 | gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,33); |
1283eee5 | 648 | |
79575d04 | 649 | // daughter volumes - central part |
1283eee5 | 650 | |
79575d04 | 651 | // Tpc Sandwich 9 -Tedlar |
1283eee5 | 652 | |
79575d04 | 653 | dm[0]=77.09; |
654 | dm[1]=79.16; | |
655 | dm[2]=88.; | |
1283eee5 | 656 | |
79575d04 | 657 | gMC->Gsvolu("TSA9","TUBE",idtmed[9],dm,3); |
1283eee5 | 658 | |
79575d04 | 659 | // Tpc Sandwich 10 - fiber glass (G10) |
1283eee5 | 660 | |
79575d04 | 661 | dm[0] += 5.e-3; |
662 | dm[1] -= 5.e-3; | |
1283eee5 | 663 | |
79575d04 | 664 | gMC->Gsvolu("TS10","TUBE",idtmed[12],dm,3); |
1283eee5 | 665 | |
79575d04 | 666 | // Tpc Sandwich 11 - NOMEX |
1283eee5 | 667 | |
79575d04 | 668 | dm[0] += 0.03; |
669 | dm[1] -= 0.03; | |
1283eee5 | 670 | |
79575d04 | 671 | gMC->Gsvolu("TS11","TUBE",idtmed[6],dm,3); |
1283eee5 | 672 | |
79575d04 | 673 | // 11->10->9->TIFC |
1283eee5 | 674 | |
79575d04 | 675 | gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY"); |
676 | gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY"); | |
1283eee5 | 677 | |
79575d04 | 678 | gMC->Gspos("TSA9",1,"TIFC",0.,0.,0.,0,"ONLY"); |
1283eee5 | 679 | |
79575d04 | 680 | // daughter volumes - outer parts (reinforced) |
1283eee5 | 681 | |
79575d04 | 682 | // Tpc Sandwich 12 -Tedlar |
1283eee5 | 683 | |
79575d04 | 684 | dm[0]=77.05; |
685 | dm[1]=79.2; | |
686 | dm[2]=82.05; | |
1283eee5 | 687 | |
79575d04 | 688 | gMC->Gsvolu("TS12","TUBE",idtmed[9],dm,3); |
1283eee5 | 689 | |
79575d04 | 690 | // Tpc Sandwich 13 - fiber glass (G10) |
1283eee5 | 691 | |
79575d04 | 692 | dm[0] += 5.e-3; |
693 | dm[1] -= 5.e-3; | |
1283eee5 | 694 | |
79575d04 | 695 | gMC->Gsvolu("TS13","TUBE",idtmed[12],dm,3); |
1283eee5 | 696 | |
79575d04 | 697 | // Tpc Sandwich 14 - NOMEX |
1283eee5 | 698 | |
79575d04 | 699 | dm[0] += 0.07; |
700 | dm[1] -= 0.07; | |
1283eee5 | 701 | |
79575d04 | 702 | gMC->Gsvolu("TS14","TUBE",idtmed[6],dm,3); |
1283eee5 | 703 | |
79575d04 | 704 | // 14->13->12->TIFC |
1283eee5 | 705 | |
79575d04 | 706 | gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY"); |
707 | gMC->Gspos("TS13",1,"TS12",0.,0.,0.,0,"ONLY"); | |
1283eee5 | 708 | |
79575d04 | 709 | gMC->Gspos("TS12",1,"TIFC",0.,0.,170.05,0,"ONLY"); |
710 | gMC->Gspos("TS12",2,"TIFC",0.,0.,-170.05,0,"ONLY"); | |
1283eee5 | 711 | |
79575d04 | 712 | // place this inside the inner insulator |
1283eee5 | 713 | |
79575d04 | 714 | gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY"); |
1283eee5 | 715 | |
79575d04 | 716 | // and now in the TPC... |
1283eee5 | 717 | |
79575d04 | 718 | gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY"); |
37831078 | 719 | |
79575d04 | 720 | //--------------------------------------------------------- |
721 | // Tpc Inner Containment vessel - Cones | |
722 | //--------------------------------------------------------- | |
1283eee5 | 723 | |
79575d04 | 724 | dm[0]=0.; |
725 | dm[1]=360.; | |
37831078 | 726 | dm[2]=8.; |
1283eee5 | 727 | |
37831078 | 728 | // |
1283eee5 | 729 | |
79575d04 | 730 | dm[3]=71.8; |
731 | dm[4]=56.9; | |
732 | dm[5]=59.4; | |
1283eee5 | 733 | |
37831078 | 734 | // |
1283eee5 | 735 | |
79575d04 | 736 | dm[6]=73.; |
737 | dm[7]=56.9; | |
738 | dm[8]=59.4; | |
1283eee5 | 739 | |
37831078 | 740 | // |
1283eee5 | 741 | |
79575d04 | 742 | dm[9]=73.; |
743 | dm[10]=56.9; | |
744 | dm[11]=61.2; | |
1283eee5 | 745 | |
37831078 | 746 | // |
1283eee5 | 747 | |
79575d04 | 748 | dm[12]=73.3; |
749 | dm[13]=56.9; | |
750 | dm[14]=61.2; | |
1283eee5 | 751 | |
37831078 | 752 | // |
79575d04 | 753 | |
754 | dm[15]=73.3; | |
755 | dm[16]=60.9; | |
756 | dm[17]=61.2; | |
1283eee5 | 757 | |
79575d04 | 758 | // |
1283eee5 | 759 | |
79575d04 | 760 | dm[18]=253.6; |
761 | dm[19]=65.6; | |
762 | dm[20]=65.9; | |
1283eee5 | 763 | |
37831078 | 764 | // |
1283eee5 | 765 | |
79575d04 | 766 | dm[21]=253.6; |
767 | dm[22]=65.6; | |
768 | dm[23]=76.4; | |
1283eee5 | 769 | |
37831078 | 770 | // |
1283eee5 | 771 | |
79575d04 | 772 | dm[24]=256.3; |
773 | dm[25]=65.6; | |
774 | dm[26]=76.4; | |
1283eee5 | 775 | |
79575d04 | 776 | gMC->Gsvolu("TICC","PCON",idtmed[4],dm,27); |
1283eee5 | 777 | |
79575d04 | 778 | Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles |
1283eee5 | 779 | |
79575d04 | 780 | // reflection matrix |
781 | ||
782 | theta1 = 90.; | |
783 | phi1 = 0.; | |
784 | theta2 = 90.; | |
785 | phi2 = 270.; | |
786 | theta3 = 180.; | |
787 | phi3 = 0.; | |
1283eee5 | 788 | |
79575d04 | 789 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); |
1283eee5 | 790 | |
79575d04 | 791 | gMC->Gspos("TICC",1,"TPC ",0.,0.,0.,0,"ONLY"); |
792 | gMC->Gspos("TICC",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY"); | |
1283eee5 | 793 | |
1283eee5 | 794 | |
79575d04 | 795 | //--------------------------------------------------------- |
796 | // Tpc Inner Containment vessel - Middle part -Al | |
797 | //--------------------------------------------------------- | |
1283eee5 | 798 | |
79575d04 | 799 | dm[0]=0.; |
800 | dm[1]=360.; | |
801 | dm[2]=6.; | |
1283eee5 | 802 | |
37831078 | 803 | // |
1283eee5 | 804 | |
79575d04 | 805 | dm[3]=-71.6; |
806 | dm[4]=60.2; | |
807 | dm[5]=61.2; | |
1283eee5 | 808 | |
37831078 | 809 | // |
1283eee5 | 810 | |
79575d04 | 811 | dm[6]=-69.1; |
812 | dm[7]=60.2; | |
813 | dm[8]=61.2; | |
1283eee5 | 814 | |
37831078 | 815 | // |
1283eee5 | 816 | |
79575d04 | 817 | dm[9]=-69.1; |
818 | dm[10]=60.64; | |
819 | dm[11]=61.2; | |
1283eee5 | 820 | |
fe4da5cc | 821 | // |
822 | ||
79575d04 | 823 | dm[12]=69.1; |
824 | dm[13]=60.64; | |
825 | dm[14]=61.2; | |
fe4da5cc | 826 | |
fe4da5cc | 827 | // |
828 | ||
79575d04 | 829 | dm[15]=69.1; |
830 | dm[16]=60.2; | |
831 | dm[17]=61.2; | |
37831078 | 832 | |
fe4da5cc | 833 | // |
37831078 | 834 | |
79575d04 | 835 | dm[18]=71.6; |
836 | dm[19]=60.2; | |
837 | dm[20]=61.2; | |
37831078 | 838 | |
79575d04 | 839 | gMC->Gsvolu("TICM","PCON",idtmed[4],dm,21); |
fe4da5cc | 840 | |
79575d04 | 841 | // Tpc Sandwich 15 - Al |
37831078 | 842 | |
79575d04 | 843 | dm[0]=60.64; |
844 | dm[1]=61.2; | |
845 | dm[2]=70.1; | |
37831078 | 846 | |
79575d04 | 847 | gMC->Gsvolu("TS15","TUBE",idtmed[4],dm,3); |
fe4da5cc | 848 | |
79575d04 | 849 | // Tpc Sandwich 16 - epoxy glue |
fe4da5cc | 850 | |
79575d04 | 851 | dm[0] += 5.e-3; |
852 | dm[1] -= 5.e-3; | |
fe4da5cc | 853 | |
79575d04 | 854 | gMC->Gsvolu("TS16","TUBE",idtmed[14],dm,3); |
fe4da5cc | 855 | |
6a905708 | 856 | // Tpc Sandwich 17 - Tedlar |
37831078 | 857 | |
79575d04 | 858 | dm[0] += 0.01; |
859 | dm[1] -= 0.01; | |
37831078 | 860 | |
6a905708 | 861 | gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3); |
37831078 | 862 | |
79575d04 | 863 | // Tpc Sandwich 18 - fiber glass |
37831078 | 864 | |
79575d04 | 865 | dm[0] += 5.e-3; |
866 | dm[1] -= 5.e-3; | |
37831078 | 867 | |
79575d04 | 868 | gMC->Gsvolu("TS18","TUBE",idtmed[12],dm,3); |
37831078 | 869 | |
79575d04 | 870 | // Tpc Sandwich 19 - Nomex |
37831078 | 871 | |
79575d04 | 872 | dm[0] += 0.01; |
873 | dm[1] -= 0.01; | |
37831078 | 874 | |
79575d04 | 875 | gMC->Gsvolu("TS19","TUBE",idtmed[12],dm,3); |
37831078 | 876 | |
79575d04 | 877 | // 19->18->17->16->15-> TICM |
37831078 | 878 | |
79575d04 | 879 | gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY"); |
37831078 | 880 | gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY"); |
79575d04 | 881 | gMC->Gspos("TS17",1,"TS16",0.,0.,0.,0,"ONLY"); |
882 | gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY"); | |
37831078 | 883 | |
79575d04 | 884 | gMC->Gspos("TS15",1,"TICM ",0.,0.,0.,0,"ONLY"); |
885 | ||
37831078 | 886 | |
79575d04 | 887 | // TPc inner cont. vessel Joints |
37831078 | 888 | |
79575d04 | 889 | dm[0]=60.2; |
890 | dm[1]=61.2; | |
891 | dm[2]=0.5; | |
37831078 | 892 | |
79575d04 | 893 | gMC->Gsvolu("TPJ1","TUBE",idtmed[4],dm,3); |
37831078 | 894 | |
79575d04 | 895 | gMC->Gspos("TPJ1",1,"TPC ",0.,0.,72.3,0,"ONLY"); |
896 | gMC->Gspos("TPJ1",2,"TPC ",0.,0.,-72.3,0,"ONLY"); | |
37831078 | 897 | |
79575d04 | 898 | // |
37831078 | 899 | |
79575d04 | 900 | dm[0]=0.; |
901 | dm[1]=360.; | |
902 | dm[2]=4.; | |
37831078 | 903 | |
79575d04 | 904 | // |
37831078 | 905 | |
79575d04 | 906 | dm[3]=70.8; |
907 | dm[4]=58.4; | |
908 | dm[5]=60.1; | |
37831078 | 909 | |
79575d04 | 910 | // |
37831078 | 911 | |
79575d04 | 912 | dm[6]=71.2; |
913 | dm[7]=58.4; | |
914 | dm[8]=60.1; | |
37831078 | 915 | |
79575d04 | 916 | // |
37831078 | 917 | |
79575d04 | 918 | dm[9]=71.2; |
919 | dm[10]=58.4; | |
920 | dm[11]=59.4; | |
37831078 | 921 | |
79575d04 | 922 | // |
37831078 | 923 | |
79575d04 | 924 | dm[12]=71.6; |
925 | dm[13]=58.4; | |
926 | dm[14]=59.4; | |
37831078 | 927 | |
79575d04 | 928 | gMC->Gsvolu("TPJ2","PCON",idtmed[4],dm,15); |
37831078 | 929 | |
79575d04 | 930 | gMC->Gspos("TPJ2",1,"TPC ",0.,0.,0.,0,"ONLY"); |
931 | gMC->Gspos("TPJ2",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY"); | |
37831078 | 932 | |
37831078 | 933 | |
37831078 | 934 | |
79575d04 | 935 | // Tpc Inner Containment vessel Seal (Viton, I use Lexan for a time being) |
37831078 | 936 | |
79575d04 | 937 | dm[0]=58.4; |
938 | dm[1]=61.2; | |
939 | dm[2]=0.1; | |
37831078 | 940 | |
79575d04 | 941 | gMC->Gsvolu("TICS","TUBE",idtmed[14],dm,3); |
37831078 | 942 | |
79575d04 | 943 | gMC->Gspos("TICS",1,"TPC ",0.,0.,71.7,0,"ONLY"); |
944 | gMC->Gspos("TICS",2,"TPC ",0.,0.,-71.7,0,"ONLY"); | |
37831078 | 945 | |
79575d04 | 946 | // TICM -> TPC |
37831078 | 947 | |
79575d04 | 948 | gMC->Gspos("TICM",1,"TPC ",0.,0.,0.,0,"ONLY"); |
37831078 | 949 | |
79575d04 | 950 | // |
37831078 | 951 | |
79575d04 | 952 | nRotMat++; // prepare for the next rotation matrix |
37831078 | 953 | |
954 | //--------------------------------------------------------- | |
955 | // Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10) | |
956 | // and its daughters (HV membrane, rods, readout chambers) | |
957 | //--------------------------------------------------------- | |
958 | ||
959 | dm[0]= 79.2; | |
960 | dm[1]= 258.0; | |
961 | dm[2]= 253.6; | |
962 | ||
79575d04 | 963 | gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3); |
37831078 | 964 | |
79575d04 | 965 | // sector opening angles |
37831078 | 966 | |
967 | Float_t innerOpenAngle = fTPCParam->GetInnerAngle(); | |
968 | Float_t outerOpenAngle = fTPCParam->GetOuterAngle(); | |
969 | ||
970 | // sector angle shift | |
971 | ||
972 | Float_t innerAngleShift = fTPCParam->GetInnerAngleShift(); | |
973 | ||
79575d04 | 974 | |
37831078 | 975 | // All above parameters are identical for inner and outer |
976 | // sectors. The distinction is kept for the historical reasons | |
977 | // and eventually will disappear. | |
978 | ||
979 | Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle); | |
980 | Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha); | |
981 | Float_t space; | |
982 | ||
983 | //------------------------------------------------------------------------- | |
984 | // Tpc Inner Readout Chambers | |
985 | //------------------------------------------------------------------------- | |
986 | ||
987 | dm[0]= 14.483; | |
988 | dm[1]= 23.3345; | |
989 | dm[2]= 1.6; // thickness | |
990 | dm[3]= 25.1; | |
991 | ||
992 | gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4); | |
993 | ||
994 | // this volume will be positioned in the empty space | |
995 | // of the end-cap to avoid overlaps | |
996 | ||
997 | dm[0]= 13.7305; | |
998 | dm[1]= 21.1895; | |
999 | dm[2]= 2.25; | |
1000 | dm[3]= 21.15; | |
1001 | ||
1002 | gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4); | |
1003 | ||
79575d04 | 1004 | |
37831078 | 1005 | //------------------------------------------------ |
1006 | // Tpc Inner readout chamber Pad Plane | |
1007 | //------------------------------------------------ | |
1008 | ||
1009 | dm[0]= 14.483; | |
1010 | dm[1]= 23.3345; | |
1011 | dm[2]= 0.5; | |
1012 | dm[3]= 25.1; | |
1013 | ||
1014 | gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4); | |
1015 | ||
1016 | // | |
1017 | ||
1018 | dm[0] -= 1.218511934; | |
1019 | dm[1] -= 1.218511934; | |
1020 | dm[2] = 0.35; | |
1021 | ||
1022 | gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4); | |
1023 | ||
1024 | gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY"); | |
1025 | ||
1026 | gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY"); | |
1027 | ||
79575d04 | 1028 | |
37831078 | 1029 | //---------------------------------------------- |
1030 | // Tpc Readout Chambers Empty spaces - for both | |
1031 | // inner and outer sectors | |
1032 | //---------------------------------------------- | |
1033 | ||
1034 | gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0); | |
1035 | ||
1036 | // Inner sector - 4 spaces | |
1037 | ||
1038 | ||
1039 | dm[3] = 4.7625; | |
1040 | dm[0] = 12.472; | |
1041 | ||
1042 | Float_t rr = 90.52; | |
1043 | Float_t zz; | |
1044 | ||
1045 | zz= -12.7875; | |
1046 | ||
1047 | space = rr*tanAlpha-dm[0]; | |
1048 | ||
1049 | for(Int_t nsLow=0;nsLow<4;nsLow++){ | |
1050 | ||
1051 | rr += 9.525; | |
1052 | dm[1]= rr*tanAlpha - space; | |
1053 | ||
1054 | dm[2]=0.8; | |
1055 | ||
1056 | gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4); | |
1057 | ||
1058 | // | |
1059 | ||
79575d04 | 1060 | dm[2] = 1.2; |
37831078 | 1061 | |
1062 | gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4); | |
1063 | ||
1064 | rr += 0.4; | |
1065 | dm[0] = rr*tanAlpha - space; | |
1066 | zz += (0.4+9.525); | |
1067 | ||
1068 | } | |
1069 | ||
1070 | dm[0]= 12.472; | |
1071 | // dm[1] - this is the dm[1] from the previous TRCE | |
1072 | dm[2]= 1.05; | |
1073 | dm[3]= 19.65; | |
1074 | ||
79575d04 | 1075 | gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4); |
37831078 | 1076 | |
1077 | // | |
1078 | // TPc Space for Connectors | |
1079 | // | |
1080 | ||
1081 | dm[0]= .3; | |
1082 | dm[1]= .3; | |
1083 | dm[2]= 4.5; | |
1084 | ||
1085 | gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3); | |
1086 | ||
1087 | // TPC Connectors | |
1088 | ||
1089 | dm[0]= .25; | |
1090 | dm[1]= .15; | |
1091 | dm[2]= 3.75; | |
1092 | ||
1093 | gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3); | |
1094 | ||
1095 | gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY"); | |
1096 | ||
1097 | zz = -12.7875; | |
1098 | ||
79575d04 | 1099 | |
37831078 | 1100 | Float_t alpha; |
1101 | Float_t astep; | |
1102 | ||
37831078 | 1103 | // inner part of the inner sector - 2 x 20 holes |
1104 | ||
1105 | astep = 20.00096874/19.; | |
1106 | ||
1107 | alpha = 10.00048437-astep; | |
1108 | ||
1109 | Float_t x1,x2; | |
1110 | ||
1111 | x1 = 13.31175725; | |
1112 | x1 -= 0.996357832; | |
1113 | ||
1114 | x2 = 15.06180253; | |
1115 | x2 -= 1.163028812; | |
1116 | ||
1117 | Int_t ncon; | |
1118 | ||
1119 | for(ncon=0;ncon<20;ncon++){ | |
1120 | ||
1121 | phi1 = 0.; | |
1122 | theta1 = 90.+alpha; | |
1123 | phi2=90.; | |
1124 | theta2 = 90.; | |
1125 | phi3 = (alpha>0) ? 0. : 180.; | |
1126 | theta3 = TMath::Abs(alpha); | |
1127 | ||
1128 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1129 | ||
1130 | ||
1131 | ||
1132 | gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY"); | |
1133 | gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY"); | |
1134 | ||
1135 | ||
1136 | x1 -= 1.296357833; | |
1137 | x2 -= 1.463028812; | |
1138 | ||
1139 | alpha -= astep; | |
1140 | nRotMat++; | |
1141 | ||
1142 | } | |
1143 | ||
1144 | // outer part of the inner sector - 2 x 25 holes | |
1145 | ||
1146 | astep = 20.00096874/24.; | |
1147 | alpha = 10.00048437-astep; | |
1148 | ||
1149 | x1 = 16.81184781; | |
1150 | x1 -= 1.016295986; | |
1151 | ||
1152 | x2 = 18.5618931; | |
1153 | x2 -= 1.150914854; | |
1154 | ||
1155 | for(ncon=0;ncon<25;ncon++){ | |
1156 | ||
1157 | phi1 = 0.; | |
1158 | theta1 = 90.+alpha; | |
1159 | phi2=90.; | |
1160 | theta2 = 90.; | |
1161 | phi3 = (alpha>0) ? 0. : 180.; | |
1162 | theta3 = TMath::Abs(alpha); | |
1163 | ||
1164 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1165 | ||
1166 | ||
1167 | ||
1168 | gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY"); | |
1169 | gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY"); | |
1170 | ||
1171 | ||
1172 | x1 -= 1.316295986; | |
1173 | x2 -= 1.450914854; | |
1174 | ||
1175 | alpha -= astep; | |
1176 | nRotMat++; | |
1177 | ||
1178 | } | |
1179 | ||
1180 | //-------------------------------------------------------------------------- | |
1181 | // TPC Outer Readout Chambers | |
1182 | // this is NOT a final design | |
1183 | //-------------------------------------------------------------------------- | |
1184 | ||
1185 | dm[0]= 23.3875; | |
1186 | dm[1]= 43.524; | |
1187 | dm[2]= 1.5; //thickness | |
1188 | dm[3]= 57.1; | |
1189 | ||
1190 | gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4); | |
1191 | ||
1192 | //------------------------------------------------ | |
1193 | // Tpc Outer readout chamber Pad Plane | |
1194 | //------------------------------------------------ | |
1195 | ||
1196 | dm[2]= 0.5; | |
1197 | ||
1198 | gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4); | |
1199 | ||
1200 | dm[0] -= 1.218511934; | |
1201 | dm[1] -= 1.218511934; | |
1202 | dm[2] = 0.35; | |
1203 | ||
1204 | gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4); | |
1205 | ||
1206 | gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY"); | |
1207 | ||
1208 | gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY"); | |
1209 | ||
1210 | // empty space | |
1211 | ||
37831078 | 1212 | dm[0]= 21.035; |
1213 | dm[1]= 38.7205; | |
1214 | dm[2]= 0.7; | |
1215 | dm[3]= 50.15; | |
1216 | ||
1217 | gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4); | |
1218 | ||
1219 | dm[0]= 22.2935; | |
1220 | dm[1]= 40.5085; | |
1221 | dm[2]= 2.25; | |
1222 | dm[3]= 51.65; | |
1223 | ||
1224 | gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4); | |
1225 | ||
1226 | dm[0]= 21.35; | |
1227 | dm[1]= 38.7205; | |
1228 | dm[2]= 2.25; | |
1229 | dm[3]= 50.15; | |
1230 | ||
79575d04 | 1231 | gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4); |
37831078 | 1232 | |
1233 | //----------------------------------------------- | |
1234 | // Tpc Services Support Wheel | |
1235 | //----------------------------------------------- | |
1236 | ||
1237 | dm[0]=0.; | |
1238 | dm[1]=360.; | |
1239 | dm[2]=18.; | |
1240 | dm[3]=2.; | |
1241 | ||
1242 | dm[4]= -5.; | |
1243 | dm[5]= 77.017; | |
1244 | dm[6]= 255.267; | |
1245 | ||
1246 | dm[7]= 5.; | |
1247 | dm[8]= dm[5]; | |
1248 | dm[9]= dm[6]; | |
1249 | ||
1250 | gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10); | |
1251 | ||
1252 | // Tpc Services Wheel Cover | |
1253 | ||
1254 | dm[4]= -0.5; | |
1255 | dm[7]= 0.5; | |
1256 | ||
1257 | gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10); | |
1258 | ||
1259 | // Tpc Service wheel Cover Empty space | |
1260 | ||
1261 | dm[0]= 10.99; | |
1262 | dm[1]= 39.599; | |
1263 | dm[2]= .5; | |
1264 | dm[3]= 81.125; | |
1265 | ||
1266 | gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4); | |
1267 | ||
1268 | // Tpc services Wheel Empty Spaces | |
1269 | ||
1270 | dm[0]= 13.18017507; | |
1271 | dm[1]= 44.61045938; | |
1272 | dm[2]= 4.; | |
1273 | dm[3]= 89.125; | |
1274 | ||
1275 | gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4); | |
1276 | ||
1277 | // Tpc Services Wheel Bars | |
1278 | ||
1279 | gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0); | |
1280 | ||
1281 | // bars-> TWES | |
1282 | ||
1283 | dm[2]= 4.; | |
1284 | dm[3]= .4; | |
1285 | ||
1286 | dm[0]= 13.8149522; | |
1287 | dm[1]= 13.95601379; | |
1288 | ||
1289 | gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4); | |
1290 | ||
1291 | dm[0]= 43.83462067; | |
1292 | dm[1]= 43.97568225; | |
1293 | ||
1294 | gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4); | |
1295 | ||
1296 | // TPc ELectronics - right now 30% X0 Si | |
1297 | ||
1298 | dm[0]= 14.03813696; | |
1299 | dm[1]= 43.3524075; | |
1300 | dm[2]= 1.404; | |
1301 | dm[3]= 83.125; | |
1302 | ||
1303 | gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4); | |
1304 | gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY"); | |
1305 | ||
1306 | //-------------------------------------------------------------------------- | |
1307 | // End caps | |
1308 | //-------------------------------------------------------------------------- | |
1309 | ||
1310 | // TPc Main Wheel - Al | |
1311 | ||
79575d04 | 1312 | dm[0]= 74.9; |
1313 | dm[1]= 264.4; | |
37831078 | 1314 | dm[2]= 3.0; |
1315 | ||
1316 | gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3); | |
1317 | ||
37831078 | 1318 | //-------------------------------------------------------------------------- |
1319 | // Tpc Empty Space for the Readout chambers | |
1320 | //-------------------------------------------------------------------------- | |
1321 | ||
1322 | Float_t rLow= 86.2; | |
1323 | Float_t rUp= 243.5; | |
1324 | Float_t dR = 0.5*(rUp-rLow); | |
1325 | ||
79575d04 | 1326 | space= 1.5/cosAlpha; // wheel ribs are 3.0 cm wide |
37831078 | 1327 | |
1328 | dm[0]= rLow*tanAlpha-space; | |
1329 | dm[1]= rUp*tanAlpha-space; | |
79575d04 | 1330 | dm[2] = 3.0; |
37831078 | 1331 | dm[3]= dR; |
1332 | ||
1333 | gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4); | |
1334 | ||
1335 | // TIC1->TESR | |
1336 | ||
37831078 | 1337 | gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY"); |
1338 | ||
37831078 | 1339 | // TOC1->TESR |
1340 | ||
1341 | gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY"); | |
1342 | ||
1343 | // Tpc Empty Space Bars - Al (daughters of TESR) | |
1344 | ||
1345 | Float_t zBar; | |
1346 | ||
1347 | gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0); | |
1348 | ||
1349 | // lower bar | |
1350 | ||
1351 | dm[0]= rLow*tanAlpha-space; | |
1352 | dm[1]= 88.7*tanAlpha-space; | |
79575d04 | 1353 | dm[2]= 2.25; |
37831078 | 1354 | dm[3]= 1.275; |
1355 | ||
1356 | zBar = -dR+dm[3]; | |
1357 | ||
79575d04 | 1358 | gMC->Gsposp("TESB",1,"TESR",0.,0.75,zBar,0,"ONLY",dm,4); |
37831078 | 1359 | |
1360 | // middle bar | |
1361 | ||
1362 | dm[0]= 131.65*tanAlpha-space; | |
1363 | dm[1]= 136.5*tanAlpha-space; | |
1364 | dm[3]= 2.425; | |
1365 | ||
1366 | zBar = -dR +131.65+dm[3]-rLow; | |
1367 | ||
79575d04 | 1368 | gMC->Gsposp("TESB",2,"TESR",0.,0.75,zBar,0,"ONLY",dm,4); |
37831078 | 1369 | |
1370 | // upper bar | |
1371 | ||
1372 | dm[0]= 240.4*tanAlpha-space; | |
1373 | dm[1]= rUp*tanAlpha-space; | |
1374 | dm[3]= 1.55; | |
1375 | ||
1376 | zBar = dR-dm[3]; | |
1377 | ||
79575d04 | 1378 | gMC->Gsposp("TESB",3,"TESR",0.,0.75,zBar,0,"ONLY",dm,4); |
37831078 | 1379 | |
1380 | //------------------------------------------------------ | |
1381 | // TPc Lower "S" Sectors | |
1382 | //------------------------------------------------------ | |
1383 | ||
1384 | ||
1385 | Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow(); | |
1386 | Float_t inSecUpEdge = fTPCParam->GetInnerRadiusUp(); | |
1387 | ||
1388 | dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01; | |
1389 | dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01; | |
79575d04 | 1390 | dm[2] = 0.5*(250. - 5.e-3); |
37831078 | 1391 | dm[3] = 0.5*(inSecUpEdge-inSecLowEdge); |
1392 | ||
1393 | gMC->Gsvolu("TPLS", "TRD1", idtmed[2], dm, 4); // sensitive | |
1394 | ||
79575d04 | 1395 | |
37831078 | 1396 | //---------------------------------------------------------- |
1397 | // TPc Upper Sectors | |
1398 | //---------------------------------------------------------- | |
1399 | ||
1400 | Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow(); | |
1401 | Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp(); | |
1402 | ||
1403 | dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01; | |
1404 | dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01; | |
79575d04 | 1405 | dm[2] = 0.5*(250. - 5.e-3); |
37831078 | 1406 | dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge); |
1407 | ||
1408 | gMC->Gsvolu("TPUS", "TRD1", idtmed[2], dm, 4); // sensitive | |
1409 | ||
1410 | ||
37831078 | 1411 | |
79575d04 | 1412 | // sensitive strips |
37831078 | 1413 | |
1414 | gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive | |
1415 | ||
1416 | Int_t nofStrips,nstr; | |
1417 | Float_t r1,r2,zs; | |
1418 | Float_t stripThick = 0.01; // 100 microns | |
1419 | Float_t deadSpace; | |
1420 | ||
1421 | // inner sector | |
1422 | ||
d4c354b9 | 1423 | |
1424 | // if all lower sectors selected define only 1 strip | |
1425 | ||
1426 | nofStrips=((fSecAL <0)||(fSecAL>=0 && fSens<0)) ? 1 : fTPCParam->GetNRowLow(); | |
37831078 | 1427 | deadSpace = fTPCParam->GetInnerWireMount(); |
1428 | ||
79575d04 | 1429 | dm[2] = 0.5*(250. - 5.e-3); |
1430 | dm[3] = 0.5 * stripThick; | |
d4c354b9 | 1431 | |
37831078 | 1432 | for(nstr=0;nstr<nofStrips;nstr++){ |
1433 | ||
1434 | r1 = fTPCParam->GetPadRowRadiiLow(nstr); | |
1435 | r2 = r1 + stripThick; | |
1436 | dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace; | |
1437 | dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace; | |
1438 | zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge); | |
1439 | zs += r1; | |
1440 | zs += dm[3]; | |
1441 | ||
1442 | gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4); | |
1443 | ||
37831078 | 1444 | |
1445 | } | |
1446 | ||
d4c354b9 | 1447 | // strips only if several upper sectors selected end fSens > 0 |
1448 | ||
1449 | if(fSecAU >=0 && fSens >0){ | |
1450 | ||
37831078 | 1451 | Int_t nsSave = nofStrips; |
1452 | ||
1453 | // outer sector | |
1454 | ||
1455 | nofStrips = fTPCParam->GetNRowUp(); | |
1456 | deadSpace = fTPCParam->GetOuterWireMount(); | |
1457 | ||
79575d04 | 1458 | dm[2] = 0.5*(250. - 5.e-3); |
37831078 | 1459 | dm[3] = 0.5 * stripThick; |
d4c354b9 | 1460 | |
37831078 | 1461 | |
1462 | for(nstr=0;nstr<nofStrips;nstr++){ | |
1463 | ||
1464 | r1 = fTPCParam->GetPadRowRadiiUp(nstr); | |
1465 | r2 = r1 + stripThick; | |
1466 | dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace; | |
1467 | dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace; | |
1468 | zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge); | |
1469 | zs += r1; | |
1470 | zs += dm[3]; | |
1471 | ||
1472 | gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4); | |
1473 | ||
1474 | } | |
79575d04 | 1475 | } |
1476 | ||
37831078 | 1477 | |
1478 | //------------------------------------------------------- | |
1479 | // positioning of the empty spaces into the main wheel | |
1480 | // and readout chambers and sectors into the drift gas | |
1481 | //------------------------------------------------------- | |
1482 | ||
1483 | Float_t rCenter,xc,yc; | |
1484 | Float_t rInner,rOuter; // center of the inner and outer chamber | |
1485 | ||
1486 | rCenter = rLow+dR; | |
1487 | ||
1488 | rInner = 108.07; | |
1489 | rOuter = 190.68; | |
1490 | ||
79575d04 | 1491 | |
37831078 | 1492 | for(Int_t ns=0; ns<nInnerSector;ns++){ |
1493 | ||
1494 | phi1 = ns * innerOpenAngle + innerAngleShift; | |
1495 | phi1 *= kRaddeg; // in degrees | |
1496 | ||
1497 | phi1 = (Float_t)TMath::Nint(phi1) + 270.; | |
1498 | ||
1499 | if (phi1 > 360.) phi1 -= 360.; | |
1500 | ||
1501 | theta1 = 90.; | |
1502 | phi2 = 90.; | |
1503 | theta2 = 180.; | |
1504 | phi3 = ns * innerOpenAngle + innerAngleShift; | |
1505 | phi3 *= kRaddeg; // in degrees | |
1506 | ||
1507 | phi3 = (Float_t)TMath::Nint(phi3); | |
1508 | ||
1509 | if(phi3 > 360.) phi3 -= 360.; | |
1510 | ||
1511 | theta3 = 90.; | |
1512 | ||
1513 | // "holes"->End plate | |
1514 | ||
1515 | xc = rCenter*TMath::Cos(phi3*kDegrad); | |
1516 | yc = rCenter*TMath::Sin(phi3*kDegrad); | |
1517 | ||
1518 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1519 | ||
1520 | gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY"); | |
1521 | ||
1522 | // TSCE->TSWC (services wheel volumes) | |
1523 | ||
1524 | xc = 166.142*TMath::Cos(phi3*kDegrad); | |
1525 | yc = 166.142*TMath::Sin(phi3*kDegrad); | |
1526 | ||
1527 | gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY"); | |
1528 | gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY"); | |
1529 | ||
79575d04 | 1530 | |
37831078 | 1531 | // readout chambers->TDGN (drift gas) |
1532 | ||
1533 | xc = rInner*TMath::Cos(phi3*kDegrad); | |
1534 | yc = rInner*TMath::Sin(phi3*kDegrad); | |
1535 | ||
1536 | gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY"); | |
1537 | ||
1538 | // here lower sectors | |
1539 | ||
1540 | if(fSecAL <0){ | |
1541 | ||
1542 | // all lower sectors are positioned | |
1543 | ||
79575d04 | 1544 | gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1545 | gMC-> |
79575d04 | 1546 | Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1547 | } |
1548 | else{ | |
1549 | ||
1550 | // only selected sectors are positioned (up to 6 sectors) | |
1551 | ||
1552 | for(Int_t sel=0;sel<6;sel++){ | |
1553 | ||
1554 | if(fSecLows[sel] == ns){ | |
79575d04 | 1555 | gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1556 | } |
1557 | else if(fSecLows[sel] == ns+nInnerSector){ | |
1558 | gMC-> | |
79575d04 | 1559 | Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1560 | } |
1561 | } | |
1562 | } // lower sectors finished | |
79575d04 | 1563 | |
1564 | ||
37831078 | 1565 | xc = rOuter*TMath::Cos(phi3*kDegrad); |
1566 | yc = rOuter*TMath::Sin(phi3*kDegrad); | |
1567 | ||
1568 | gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY"); | |
1569 | ||
1570 | // here upper sectors | |
1571 | ||
1572 | if(fSecAU <0){ | |
1573 | ||
1574 | // all upper sectors | |
1575 | ||
79575d04 | 1576 | gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1577 | gMC-> |
79575d04 | 1578 | Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1579 | } |
1580 | else{ | |
1581 | ||
1582 | // only selected sectors (up to 12) | |
1583 | ||
1584 | for(Int_t sel=0;sel<12;sel++){ | |
1585 | if(fSecUps[sel] == ns+2*nInnerSector){ | |
79575d04 | 1586 | gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1587 | } |
1588 | else if(fSecUps[sel] == ns+2*nInnerSector+nOuterSector){ | |
1589 | gMC-> | |
79575d04 | 1590 | Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); |
37831078 | 1591 | } |
1592 | } | |
1593 | } // upper sectors finished | |
1594 | ||
79575d04 | 1595 | |
37831078 | 1596 | nRotMat++; |
1597 | ||
79575d04 | 1598 | theta2 = 0.; // reflection |
37831078 | 1599 | |
1600 | AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3); | |
1601 | ||
1602 | xc = rInner*TMath::Cos(phi3*kDegrad); | |
1603 | yc = rInner*TMath::Sin(phi3*kDegrad); | |
1604 | ||
1605 | gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY"); | |
1606 | ||
1607 | xc = rOuter*TMath::Cos(phi3*kDegrad); | |
1608 | yc = rOuter*TMath::Sin(phi3*kDegrad); | |
1609 | ||
1610 | gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY"); | |
1611 | ||
1612 | nRotMat++; | |
1613 | ||
37831078 | 1614 | } |
37831078 | 1615 | // TPMW->TPC |
1616 | ||
1617 | gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY"); | |
79575d04 | 1618 | gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[0],"ONLY"); |
37831078 | 1619 | |
79575d04 | 1620 | //--------------------------------------------------------- |
1621 | // Tpc High Voltage Membrane - 100 microns of mylar | |
1622 | //--------------------------------------------------------- | |
37831078 | 1623 | |
79575d04 | 1624 | dm[0]=82.8; |
1625 | dm[1]=252.; | |
1626 | dm[2]=0.005; | |
37831078 | 1627 | |
79575d04 | 1628 | gMC->Gsvolu("THVM","TUBE",idtmed[8],dm,3); |
37831078 | 1629 | |
79575d04 | 1630 | gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY"); |
37831078 | 1631 | |
79575d04 | 1632 | // Tpc High Voltage membrane Holders |
37831078 | 1633 | |
79575d04 | 1634 | gMC->Gsvolu("THVH","TUBE",idtmed[4],dm,0); |
37831078 | 1635 | |
79575d04 | 1636 | |
37831078 | 1637 | |
79575d04 | 1638 | // inner |
37831078 | 1639 | |
79575d04 | 1640 | dm[0]=79.3; |
1641 | dm[1]=82.8; | |
1642 | dm[2]=0.2; | |
37831078 | 1643 | |
79575d04 | 1644 | gMC->Gsposp("THVH",1,"TDGN",0.,0.,0.,0,"ONLY",dm,3); |
1645 | ||
1646 | // outer | |
1647 | ||
1648 | dm[0]= 252.; | |
1649 | dm[1]= 257.9; | |
1650 | dm[2]= 0.4; | |
1651 | ||
1652 | gMC->Gsposp("THVH",2,"TDGN",0.,0.,0.,0,"ONLY",dm,3); | |
37831078 | 1653 | |
1654 | //---------------------------------------------------------- | |
1655 | // TPc Support Rods - MAKROLON | |
1656 | //---------------------------------------------------------- | |
1657 | ||
1658 | dm[0]= 0.9; | |
1659 | dm[1]= 1.2; | |
37831078 | 1660 | |
79575d04 | 1661 | gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,0); // inner and outer rods differ |
37831078 | 1662 | |
79575d04 | 1663 | |
1664 | for(Int_t nrod=0;nrod<18;nrod++){ | |
37831078 | 1665 | Float_t angle=innerOpenAngle*(Float_t)nrod; |
1666 | ||
79575d04 | 1667 | xc=81.5*TMath::Cos(angle); |
1668 | yc=81.5*TMath::Sin(angle); | |
1669 | ||
1670 | dm[2]=126.7; | |
37831078 | 1671 | |
79575d04 | 1672 | gMC->Gsposp("TPSR",nrod+1,"TDGN",xc,yc,126.9,0,"ONLY",dm,3); |
1673 | gMC->Gsposp("TPSR",nrod+19,"TDGN",xc,yc,-126.9,0,"ONLY",dm,3); | |
37831078 | 1674 | |
79575d04 | 1675 | dm[2]=126.6; |
37831078 | 1676 | |
79575d04 | 1677 | xc=254.25*TMath::Cos(angle); |
1678 | yc=254.25*TMath::Sin(angle); | |
1679 | ||
1680 | // rod number 54 contans the HV cable | |
37831078 | 1681 | |
79575d04 | 1682 | if(nrod<17) { |
1683 | gMC->Gsposp("TPSR",nrod+37,"TDGN",xc,yc,127.,0,"ONLY",dm,3); | |
1684 | gMC->Gsposp("TPSR",nrod+54,"TDGN",xc,yc,-127.,0,"ONLY",dm,3); | |
1685 | } | |
1686 | ||
37831078 | 1687 | } |
1688 | ||
1689 | //---------------------------------------------------------- | |
79575d04 | 1690 | // Tpc High Voltage Rod - MAKROLON + Copper cable |
37831078 | 1691 | //---------------------------------------------------------- |
1692 | ||
1693 | // rod with cable (Left) | |
1694 | ||
1695 | dm[0]=0.; | |
1696 | dm[1]=2.25; | |
79575d04 | 1697 | dm[2]=126.6; |
37831078 | 1698 | |
1699 | gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3); | |
1700 | ||
1701 | // HV cable | |
1702 | ||
1703 | dm[0]=0.; | |
1704 | dm[1]=0.3; | |
79575d04 | 1705 | dm[2]=126.6; |
37831078 | 1706 | |
79575d04 | 1707 | gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3); |
37831078 | 1708 | |
1709 | // empty space | |
1710 | ||
1711 | dm[0]=0.3; | |
1712 | dm[1]=1.; | |
79575d04 | 1713 | dm[2]=126.6; |
37831078 | 1714 | |
1715 | gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3); | |
1716 | ||
1717 | gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY"); | |
1718 | gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY"); | |
1719 | ||
1720 | // rod without cable | |
1721 | ||
1722 | dm[0]=1.8; | |
1723 | dm[1]=2.25; | |
79575d04 | 1724 | dm[2]=126.6; |
37831078 | 1725 | |
1726 | gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3); | |
1727 | ||
79575d04 | 1728 | gMC->Gspos("THVL",1,"TDGN",xc,yc,-127.,0,"ONLY"); |
1729 | gMC->Gspos("THVR",1,"TDGN",xc,yc,127.,0,"ONLY"); | |
37831078 | 1730 | |
1731 | gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY"); | |
79575d04 | 1732 | |
37831078 | 1733 | // services wheel cover -> wheel |
1734 | ||
1735 | ||
1736 | gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY"); | |
1737 | gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY"); | |
1738 | ||
1739 | ||
1740 | // put the wheel into the TPC | |
1741 | ||
1742 | gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY"); | |
1743 | gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY"); | |
1744 | ||
79575d04 | 1745 | // |
1746 | ||
37831078 | 1747 | gMC->Gsord("TPMW",6); |
79575d04 | 1748 | gMC->Gsord("TSSW",6); |
1749 | gMC->Gsord("TSWC",6); | |
d4c354b9 | 1750 | if(fSecAL >=0) gMC->Gsord("TPLS",3); |
1751 | if(fSecAU >=0 && fSens >0) gMC->Gsord("TPUS",3); | |
37831078 | 1752 | gMC->Gsord("TDGN",6); |
37831078 | 1753 | |
1754 | // put the TPC into ALIC (main mother volume) | |
1755 | ||
79575d04 | 1756 | gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY"); |
1757 | ||
1758 | ||
37831078 | 1759 | |
1760 | } // end of function | |
1761 | ||
1762 | //_____________________________________________________________________________ | |
1763 | void AliTPCv2::DrawDetector() | |
1764 | { | |
1765 | // | |
1766 | // Draw a shaded view of the Time Projection Chamber version 1 | |
1767 | // | |
1768 | ||
1769 | // Set everything unseen | |
1770 | gMC->Gsatt("*", "seen", -1); | |
1771 | // | |
1772 | // Set ALIC mother transparent | |
1773 | gMC->Gsatt("ALIC","SEEN",0); | |
1774 | // | |
1775 | // Set the volumes visible | |
1776 | // | |
1777 | ||
1778 | gMC->Gsatt("TPC ","SEEN",0); | |
1779 | gMC->Gsatt("TOIN","SEEN",1); | |
1780 | gMC->Gsatt("TOIN","COLO",7); | |
37831078 | 1781 | gMC->Gsatt("TOCV","SEEN",1); |
1782 | gMC->Gsatt("TOCV","COLO",4); | |
1783 | gMC->Gsatt("TSA1","SEEN",0); | |
1784 | gMC->Gsatt("TSA2","SEEN",0); | |
1785 | gMC->Gsatt("TSA3","SEEN",0); | |
79575d04 | 1786 | gMC->Gsatt("TSA4","SEEN",0); |
1787 | gMC->Gsatt("TSA5","SEEN",0); | |
37831078 | 1788 | gMC->Gsatt("TOFC","SEEN",1); |
1789 | gMC->Gsatt("TOFC","COLO",4); | |
37831078 | 1790 | gMC->Gsatt("TSA6","SEEN",0); |
1791 | gMC->Gsatt("TSA7","SEEN",0); | |
79575d04 | 1792 | gMC->Gsatt("TSA8","SEEN",0); |
37831078 | 1793 | gMC->Gsatt("TIIN","SEEN",1); |
79575d04 | 1794 | gMC->Gsatt("TIIN","COLO",7); |
1795 | gMC->Gsatt("TII1","SEEN",0); | |
1796 | gMC->Gsatt("TIFC","SEEN",1); | |
1797 | gMC->Gsatt("TIFC","COLO",4); | |
1798 | gMC->Gsatt("TSA9","SEEN",0); | |
37831078 | 1799 | gMC->Gsatt("TS10","SEEN",0); |
1800 | gMC->Gsatt("TS11","SEEN",0); | |
1801 | gMC->Gsatt("TS12","SEEN",0); | |
37831078 | 1802 | gMC->Gsatt("TS13","SEEN",0); |
1803 | gMC->Gsatt("TS14","SEEN",0); | |
79575d04 | 1804 | gMC->Gsatt("TICC","SEEN",0); |
1805 | gMC->Gsatt("TICM","SEEN",0); | |
37831078 | 1806 | gMC->Gsatt("TS15","SEEN",0); |
1807 | gMC->Gsatt("TS16","SEEN",0); | |
37831078 | 1808 | gMC->Gsatt("TS17","SEEN",0); |
79575d04 | 1809 | gMC->Gsatt("TS18","SEEN",0); |
1810 | gMC->Gsatt("TS19","SEEN",0); | |
1811 | gMC->Gsatt("TPJ1","SEEN",0); | |
1812 | gMC->Gsatt("TPJ2","SEEN",0); | |
1813 | gMC->Gsatt("TICS","SEEN",0); | |
1814 | gMC->Gsatt("TDGN","SEEN",0); | |
37831078 | 1815 | gMC->Gsatt("TIRC","SEEN",0); |
1816 | gMC->Gsatt("TIC1","SEEN",1); | |
1817 | gMC->Gsatt("TIPP","SEEN",0); | |
1818 | gMC->Gsatt("TIC3","SEEN",0); | |
1819 | gMC->Gsatt("TRCE","SEEN",0); | |
1820 | gMC->Gsatt("TPSC","SEEN",0); | |
79575d04 | 1821 | gMC->Gsatt("TPCC","SEEN",0); |
37831078 | 1822 | gMC->Gsatt("TORC","SEEN",0); |
1823 | gMC->Gsatt("TOPP","SEEN",0); | |
1824 | gMC->Gsatt("TOC3","SEEN",0); | |
1825 | gMC->Gsatt("TOC1","SEEN",1); | |
1826 | gMC->Gsatt("TSSW","SEEN",1); | |
1827 | gMC->Gsatt("TSWC","SEEN",1); | |
37831078 | 1828 | gMC->Gsatt("TSSW","COLO",3); |
1829 | gMC->Gsatt("TSWC","COLO",3); | |
1830 | gMC->Gsatt("TSCE","COLO",6); | |
79575d04 | 1831 | gMC->Gsatt("TSCE","SEEN",1); |
37831078 | 1832 | gMC->Gsatt("TWES","SEEN",0); |
1833 | gMC->Gsatt("TSWB","SEEN",0); | |
1834 | gMC->Gsatt("TPEL","SEEN",0); | |
1835 | gMC->Gsatt("TPMW","SEEN",1); | |
37831078 | 1836 | gMC->Gsatt("TESR","SEEN",1); |
1837 | gMC->Gsatt("TPMW","COLO",12); | |
37831078 | 1838 | gMC->Gsatt("TIC1","COLO",5); |
79575d04 | 1839 | gMC->Gsatt("TOC1","COLO",5); |
37831078 | 1840 | gMC->Gsatt("TESB","SEEN",0); |
37831078 | 1841 | gMC->Gsatt("THVM","SEEN",1); |
1842 | gMC->Gsatt("THVM","COLO",11); | |
79575d04 | 1843 | gMC->Gsatt("THVH","SEEN",0); |
1844 | gMC->Gsatt("TPSR","SEEN",0); | |
37831078 | 1845 | gMC->Gsatt("THVL","SEEN",0); |
79575d04 | 1846 | gMC->Gsatt("THVC","SEEN",0); |
37831078 | 1847 | gMC->Gsatt("THVE","SEEN",0); |
1848 | gMC->Gsatt("THVR","SEEN",0); | |
79575d04 | 1849 | gMC->Gsatt("TPSS","SEEN",0); |
1850 | gMC->Gsatt("TPUS","SEEN",0); | |
1851 | gMC->Gsatt("TPLS","SEEN",0); | |
37831078 | 1852 | |
1853 | // | |
1854 | gMC->Gdopt("hide", "on"); | |
1855 | gMC->Gdopt("shad", "on"); | |
1856 | gMC->Gsatt("*", "fill", 7); | |
1857 | gMC->SetClipBox("."); | |
1858 | gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.); | |
1859 | gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.); | |
1860 | gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.); | |
1861 | gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.); | |
1862 | gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290); | |
1863 | gMC->DefaultRange(); | |
1864 | gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025); | |
1865 | gMC->Gdhead(1111, "Time Projection Chamber"); | |
1866 | gMC->Gdman(18, 4, "MAN"); | |
1867 | gMC->Gdopt("hide","off"); | |
1868 | } | |
1869 | ||
1870 | //_____________________________________________________________________________ | |
1871 | void AliTPCv2::CreateMaterials() | |
1872 | { | |
1873 | // | |
1874 | // Define materials for version 2 of the Time Projection Chamber | |
1875 | // | |
1876 | ||
1877 | AliTPC::CreateMaterials(); | |
1878 | } | |
1879 | ||
1880 | //_____________________________________________________________________________ | |
1881 | void AliTPCv2::Init() | |
1882 | { | |
1883 | // | |
1884 | // Initialises version 2 of the TPC after that it has been built | |
1885 | // | |
1886 | ||
1887 | Int_t *idtmed = fIdtmed->GetArray(); | |
1888 | ||
1889 | AliTPC::Init(); | |
d4c354b9 | 1890 | |
1891 | ||
1892 | ||
1893 | fIdSens=gMC->VolId("TPSS"); | |
1894 | ||
1895 | fIdLSec=gMC->VolId("TPLS"); // lower sector | |
37831078 | 1896 | fIdUSec=gMC->VolId("TPUS"); // upper sector |
1897 | ||
1898 | gMC->SetMaxNStep(30000); // max. number of steps increased | |
1899 | ||
1900 | gMC->Gstpar(idtmed[2],"LOSS",5); // specific energy loss | |
1901 | ||
1902 | printf("*** TPC version 2 initialized ***\n"); | |
1903 | printf("Maximum number of steps = %d\n",gMC->GetMaxNStep()); | |
1904 | ||
1905 | // | |
fe4da5cc | 1906 | |
1907 | } | |
1908 | ||
1909 | //_____________________________________________________________________________ | |
1910 | void AliTPCv2::StepManager() | |
1911 | { | |
1912 | // | |
1913 | // Called for every step in the Time Projection Chamber | |
1914 | // | |
1915 | ||
1916 | // | |
1917 | // parameters used for the energy loss calculations | |
1918 | // | |
73042f01 | 1919 | const Float_t kprim = 14.35; // number of primary collisions per 1 cm |
1920 | const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2 | |
1921 | const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation | |
fe4da5cc | 1922 | |
1923 | ||
73042f01 | 1924 | const Float_t kbig = 1.e10; |
fe4da5cc | 1925 | |
1926 | Int_t id,copy; | |
1927 | Float_t hits[4]; | |
1928 | Int_t vol[2]; | |
37831078 | 1929 | TLorentzVector p; |
fe4da5cc | 1930 | |
37831078 | 1931 | vol[1]=0; // preset row number to 0 |
fe4da5cc | 1932 | |
1933 | // | |
1934 | ||
73042f01 | 1935 | gMC->SetMaxStep(kbig); |
fe4da5cc | 1936 | |
0a6d8768 | 1937 | if(!gMC->IsTrackAlive()) return; // particle has disappeared |
fe4da5cc | 1938 | |
cfce8870 | 1939 | Float_t charge = gMC->TrackCharge(); |
fe4da5cc | 1940 | |
1941 | if(TMath::Abs(charge)<=0.) return; // take only charged particles | |
1942 | ||
37831078 | 1943 | // check the sensitive volume |
1944 | ||
1945 | id = gMC->CurrentVolID(copy); // current volume Id | |
1946 | ||
1947 | if(id == fIdLSec){ | |
1948 | vol[0] = copy-1; // lower sector number | |
1949 | } | |
1950 | else if(id == fIdUSec){ | |
1951 | vol[0] = copy+fTPCParam->GetNInnerSector()-1; // upper sector number | |
1952 | } | |
1953 | else if(id == fIdSens && gMC->IsTrackEntering()){ | |
1954 | ||
1955 | // track is entering the sensitive strip | |
1956 | ||
1957 | vol[1]= copy-1; // row number (absolute) | |
1958 | ||
1959 | // sector type | |
1960 | ||
1961 | id = gMC->CurrentVolOffID(1,copy); | |
1962 | ||
1963 | if(id == fIdLSec){ | |
1964 | ||
1965 | // lower sector | |
1966 | ||
1967 | vol[0] = copy-1; // sector number | |
1968 | ||
fe4da5cc | 1969 | } |
37831078 | 1970 | else { |
1971 | ||
1972 | // upper sector | |
1973 | ||
1974 | vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number | |
6a905708 | 1975 | vol[1] -= fTPCParam->GetNRowLow(); // row number (starts also from 0) |
37831078 | 1976 | |
1977 | } | |
1978 | ||
1979 | if(vol[1] == 0){ | |
1980 | ||
1981 | // because Jouri wants to have this | |
1982 | ||
1983 | gMC->TrackMomentum(p); | |
1984 | hits[0]=p[0]; | |
1985 | hits[1]=p[1]; | |
1986 | hits[2]=p[2]; | |
fe4da5cc | 1987 | hits[3]=0.; // this hit has no energy loss |
6a905708 | 1988 | // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
1989 | ||
1990 | AddHit(gAlice->CurrentTrack(), vol,hits); //MI change | |
37831078 | 1991 | |
930ee558 | 1992 | } |
37831078 | 1993 | |
930ee558 | 1994 | gMC->TrackPosition(p); |
1995 | hits[0]=p[0]; | |
1996 | hits[1]=p[1]; | |
1997 | hits[2]=p[2]; | |
1998 | hits[3]=0.; // this hit has no energy loss | |
6a905708 | 1999 | // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
2000 | ||
2001 | AddHit(gAlice->CurrentTrack(), vol,hits); //MI change | |
930ee558 | 2002 | |
37831078 | 2003 | } |
fe4da5cc | 2004 | else return; |
37831078 | 2005 | |
2006 | //----------------------------------------------------------------- | |
fe4da5cc | 2007 | // charged particle is in the sensitive volume |
37831078 | 2008 | //----------------------------------------------------------------- |
fe4da5cc | 2009 | |
cfce8870 | 2010 | if(gMC->TrackStep() > 0) { |
fe4da5cc | 2011 | |
73042f01 | 2012 | Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1; |
fe4da5cc | 2013 | nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV |
2014 | ||
37831078 | 2015 | gMC->TrackPosition(p); |
2016 | hits[0]=p[0]; | |
2017 | hits[1]=p[1]; | |
2018 | hits[2]=p[2]; | |
fe4da5cc | 2019 | hits[3]=(Float_t)nel; |
2020 | ||
2021 | // Add this hit | |
2022 | ||
6a905708 | 2023 | // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
2024 | if (fHitType&&2){ | |
2025 | gMC->TrackMomentum(p); | |
2026 | Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]); | |
2027 | Float_t precision = (momentum>0.1) ? 0.002 :0.01; | |
2028 | fTrackHits->SetHitPrecision(precision); | |
2029 | } | |
2030 | AddHit(gAlice->CurrentTrack(), vol,hits); //MI change | |
fe4da5cc | 2031 | |
2032 | } | |
2033 | ||
2034 | // Stemax calculation for the next step | |
2035 | ||
2036 | Float_t pp; | |
0a6d8768 | 2037 | TLorentzVector mom; |
2038 | gMC->TrackMomentum(mom); | |
2039 | Float_t ptot=mom.Rho(); | |
73042f01 | 2040 | Float_t betaGamma = ptot/gMC->TrackMass(); |
fe4da5cc | 2041 | |
69e40cce | 2042 | Int_t pid=gMC->TrackPid(); |
cc80f89e | 2043 | if((pid==kElectron || pid==kPositron) && ptot > 0.002) |
fe4da5cc | 2044 | { |
73042f01 | 2045 | pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau! |
fe4da5cc | 2046 | } |
2047 | else | |
2048 | { | |
595bf2c3 | 2049 | |
07521998 | 2050 | betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg |
595bf2c3 | 2051 | pp=kprim*BetheBloch(betaGamma); |
2052 | ||
fe4da5cc | 2053 | if(TMath::Abs(charge) > 1.) pp *= (charge*charge); |
2054 | } | |
2055 | ||
2056 | Float_t random[1]; | |
cfce8870 | 2057 | gMC->Rndm(random,1); // good, old GRNDM from Geant3 |
fe4da5cc | 2058 | |
2059 | Double_t rnd = (Double_t)random[0]; | |
2060 | ||
cfce8870 | 2061 | gMC->SetMaxStep(-TMath::Log(rnd)/pp); |
fe4da5cc | 2062 | |
2063 | } | |
2064 | ||
2065 | //_____________________________________________________________________________ | |
2066 | Float_t AliTPCv2::BetheBloch(Float_t bg) | |
2067 | { | |
2068 | // | |
2069 | // Bethe-Bloch energy loss formula | |
2070 | // | |
73042f01 | 2071 | const Double_t kp1=0.76176e-1; |
2072 | const Double_t kp2=10.632; | |
2073 | const Double_t kp3=0.13279e-4; | |
2074 | const Double_t kp4=1.8631; | |
2075 | const Double_t kp5=1.9479; | |
fe4da5cc | 2076 | |
2077 | Double_t dbg = (Double_t) bg; | |
2078 | ||
2079 | Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg); | |
2080 | ||
73042f01 | 2081 | Double_t aa = TMath::Power(beta,kp4); |
2082 | Double_t bb = TMath::Power(1./dbg,kp5); | |
fe4da5cc | 2083 | |
73042f01 | 2084 | bb=TMath::Log(kp3+bb); |
fe4da5cc | 2085 | |
73042f01 | 2086 | return ((Float_t)((kp2-aa-bb)*kp1/aa)); |
fe4da5cc | 2087 | } |
73042f01 | 2088 | |
2089 |