- AddTrackReference moved to AliModule
[u/mrichter/AliRoot.git] / TPC / AliTPCv2.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
4  * Author: The ALICE Off-line Project.                                    *
5  * Contributors are mentioned in the code where appropriate.              *
6  *                                                                        *
7  * Permission to use, copy, modify and distribute this software and its   *
8  * documentation strictly for non-commercial purposes is hereby granted   *
9  * without fee, provided that the above copyright notice appears in all   *
10  * copies and that both the copyright notice and this permission notice   *
11  * appear in the supporting documentation. The authors make no claims     *
12  * about the suitability of this software for any purpose. It is          *
13  * provided "as is" without express or implied warranty.                  *
14  **************************************************************************/
15
16 /*
17 $Log$
18 Revision 1.47  2003/03/04 15:16:54  kowal2
19 Geometry corrected for an overlap
20
21 Revision 1.46  2003/02/11 16:54:07  hristov
22 Updated AliTrackReference class (S.Radomski)
23
24 Revision 1.45  2003/01/14 10:50:20  alibrary
25 Cleanup of STEER coding conventions
26
27 Revision 1.44  2002/11/21 22:43:32  alibrary
28 Removing AliMC and AliMCProcess
29
30 Revision 1.43  2002/10/14 14:57:43  hristov
31 Merging the VirtualMC branch to the main development branch (HEAD)
32
33 Revision 1.40.6.2  2002/07/24 10:09:01  alibrary
34 Updating VirtualMC
35
36 Revision 1.42  2002/06/12 14:56:56  kowal2
37 Added track length to the reference hits
38
39 Revision 1.41  2002/05/27 14:33:15  hristov
40 The new class AliTrackReference used (M.Ivanov)
41
42 Revision 1.40  2002/01/21 17:12:00  kowal2
43 New track hits structure using root containers
44
45 Revision 1.39  2001/05/16 14:57:25  alibrary
46 New files for folders and Stack
47
48 Revision 1.38  2001/05/08 16:03:06  kowal2
49 Geometry update according to the latest technical spec.
50
51 Revision 1.37  2001/04/27 15:23:07  kowal2
52 Correct materian in the central part of the inner containment vessel
53
54 Revision 1.36  2001/04/26 06:15:12  kowal2
55 Corrected bug in the inner containment vessel (cones)
56
57 Revision 1.35  2001/04/24 11:17:33  kowal2
58 New TPC geometry.
59
60 Revision 1.34  2001/04/23 10:20:18  hristov
61 Constant casted to avoid ambiguity
62
63 Revision 1.33  2001/04/20 08:16:47  kowal2
64 Protection against too small betaGamma. Thanks to Ivana and Yves.
65
66 Revision 1.32  2001/03/13 13:07:34  kowal2
67 Corrected bug in the TPC mother volume geometry.
68 Thanks to A. Morsch
69
70 Revision 1.31  2000/11/30 11:48:50  kowal2
71 TLorentzVector.h adde to satisfy the latest changes by Federico
72
73 Revision 1.30  2000/11/14 10:48:57  kowal2
74 Correct material used for TSA4. Thanks to J. Barbosa.
75
76 Revision 1.29  2000/11/06 17:24:10  kowal2
77 Corrected bug in the outer containment vessel and
78 the outer field cage geometry.
79 Thanks to J. Barbosa.
80
81 Revision 1.28  2000/11/02 16:55:24  kowal2
82 Corrected bug in the inner containment vessel geometry.
83 Thanks to J. Belikov
84
85 Revision 1.27  2000/11/02 07:24:11  kowal2
86 Correction in the TPC geometry.
87 Changes due to the new hit structure.
88
89 Revision 1.26  2000/10/05 16:16:29  kowal2
90 Corrections of the hit recording algorithm.
91
92 Revision 1.25  2000/10/02 21:28:18  fca
93 Removal of useless dependecies via forward declarations
94
95 Revision 1.24  2000/08/28 10:02:30  kowal2
96 Corrected bug in the StepManager
97
98 Revision 1.23  2000/07/10 20:57:39  hristov
99 Update of TPC code and macros by M.Kowalski
100
101 Revision 1.22  2000/06/30 12:07:50  kowal2
102 Updated from the TPC-PreRelease branch
103
104 Revision 1.21.2.4  2000/06/26 07:39:42  kowal2
105 Changes to obey the coding rules
106
107 Revision 1.21.2.3  2000/06/25 08:38:41  kowal2
108 Splitted from AliTPCtracking
109
110 Revision 1.21.2.2  2000/06/16 12:58:13  kowal2
111 Changed parameter settings
112
113 Revision 1.21.2.1  2000/06/09 07:15:07  kowal2
114
115 Defaults loaded automatically (hard-wired)
116 Optional parameters can be set via macro called in the constructor
117
118 Revision 1.21  2000/05/15 10:00:30  kowal2
119 Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova
120
121 Revision 1.20  2000/04/17 09:37:33  kowal2
122 removed obsolete AliTPCDigitsDisplay.C
123
124 Revision 1.19.8.2  2000/04/10 08:31:52  kowal2
125
126 Different geometry for different sectors
127 Updated readout chambers
128 Some modifications to StepManager by J.Belikov
129
130 Revision 1.19.8.1  2000/04/10 07:56:53  kowal2
131 Not used anymore - removed
132
133 Revision 1.19  1999/11/04 17:28:07  fca
134 Correct barrel part of HV Degrader
135
136 Revision 1.18  1999/10/14 16:52:08  fca
137 Only use PDG codes and not GEANT ones
138
139 Revision 1.17  1999/10/08 06:27:23  fca
140 Corrected bug in the HV degrader geometry, thanks to G.Tabary
141
142 Revision 1.16  1999/10/04 13:39:54  fca
143 Correct array index problem
144
145 Revision 1.15  1999/09/29 09:24:34  fca
146 Introduction of the Copyright and cvs Log
147
148 */
149
150 //
151 ///////////////////////////////////////////////////////////////////////////////
152 //                                                                           //
153 //  Time Projection Chamber version 2 -- detailed TPC and slow simulation    //
154 //                                                                           //
155 //Begin_Html
156 /*
157 <img src="picts/AliTPCv2Class.gif">
158 */
159 //End_Html
160 //                                                                           //
161 //                                                                           //
162 ///////////////////////////////////////////////////////////////////////////////
163
164 #include <stdlib.h>
165
166 #include <TMath.h>
167 #include <TPDGCode.h>
168
169 #include "AliConst.h"
170 #include "AliRun.h"
171 #include "AliTPCDigitsArray.h"
172 #include "AliTPCParam.h"
173 #include "AliTPCParamSR.h"
174 #include "AliTPCTrackHitsV2.h"
175 #include "AliTPCv2.h"
176 #include "TLorentzVector.h"
177
178 ClassImp(AliTPCv2)
179  
180 //_____________________________________________________________________________
181 AliTPCv2::AliTPCv2(const char *name, const char *title) :
182   AliTPC(name, title) 
183 {
184   //
185   // Standard constructor for Time Projection Chamber version 2
186   //
187   fIdSens=0;
188   fIdLSec=0;
189   fIdUSec=0;
190
191   SetBufferSize(128000);
192
193   SetGasMixt(2,20,10,-1,0.9,0.1,0.); // Ne-CO2 90-10
194
195   // Default sectors
196
197   SetSecAL(4);
198   SetSecAU(4);
199   SetSecLows(1,  2,  3, 19, 20, 21);
200   SetSecUps(37, 38, 39, 37+18, 38+18, 39+18, -1, -1, -1, -1, -1, -1);
201   SetSens(1); // sensitive strips set 
202
203   if (fTPCParam)
204      fTPCParam->Write(fTPCParam->GetTitle());
205 }
206  
207 //_____________________________________________________________________________
208 void AliTPCv2::CreateGeometry()
209 {
210   //
211   // Create the geometry of Time Projection Chamber version 2
212   //
213   //Begin_Html
214   /*
215     <img src="picts/AliTPC.gif">
216   */
217   //End_Html
218   //Begin_Html
219   /*
220     <img src="picts/AliTPCv2Tree.gif">
221   */
222   //End_Html
223
224
225   Int_t *idtmed = fIdtmed->GetArray();
226
227   Float_t dm[50];
228   Int_t idrotm[120];
229
230   Int_t nRotMat = 0;
231
232   Int_t i,ifl1=0;
233
234   // number of sectors
235
236   Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
237   Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
238   
239   // --------------------------------------------------- 
240   //        sector specification check 
241   // --------------------------------------------------- 
242   if (fSecAL >= 0) {
243     ifl1 = 0;
244     
245     for (i = 0; i < 6; ++i) {
246       if (fSecLows[i] >= 0 && fSecLows[i] < 2*nInnerSector) {
247         ifl1 = 1;
248         printf("%s: *** SECTOR %d selected\n",ClassName(),fSecLows[i]);
249       }
250     }
251
252   } else {
253     printf("%s: *** ALL LOWER SECTORS SELECTED ***\n",ClassName());
254     ifl1 = 1;
255   }
256
257   if (ifl1 == 0) {
258     printf("%s: *** ERROR: AT LEAST ONE LOWER SECTOR MUST BE SPECIFIED ***\n",ClassName());
259     printf("%s: !!! PROGRAM STOPPED !!!\n",ClassName());
260     exit(1);
261   }
262
263   if (fSecAU >= 0) {
264     
265     for (i = 0; i < 12; ++i) {
266       if (fSecUps[i] > 2*nInnerSector-1 && 
267           fSecUps[i] < 2*(nInnerSector+nOuterSector)) {
268         printf("%s: *** SECTOR %d selected\n",ClassName(),fSecUps[i]);
269       }
270     }
271     
272   } else {
273     printf("%s: *** ALL UPPER SECTORS SELECTED ***\n",ClassName());
274   }
275   
276  
277
278   //--------------------------------------------------------------------
279
280   //
281   //  Mother volume TPC (Air) - all volumes will be positioned in it
282   //
283
284   dm[0]=0.;
285   dm[1]=360.;
286   dm[2]=8.;
287
288   //
289
290   dm[3]=-283.7;
291   dm[4]=65.6;
292   dm[5]=278.;
293
294   //
295
296   dm[6]=-253.6;
297   dm[7]=65.6;
298   dm[8]=278.;
299
300   //
301
302   dm[9]=-73.3;
303   dm[10]=60.9;
304   dm[11]=278.;  
305
306   //
307
308   dm[12]=-73.3;
309   dm[13]=56.9;
310   dm[14]=278.;
311
312   //
313
314   dm[15]=73.3;
315   dm[16]=56.9;
316   dm[17]=278.;
317
318   //
319
320   dm[18]=73.3;
321   dm[19]=60.9;
322   dm[20]=278.;
323
324   //
325
326   dm[21]=253.6;
327   dm[22]=65.6;
328   dm[23]=278.;
329
330   //
331
332   dm[24]=283.7;
333   dm[25]=65.6;
334   dm[26]=278.;
335   
336   gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,27);
337
338   // outer part
339
340   //-------------------------------------------------------------------
341   //   Tpc Outer INsulator (CO2) - contains cont. vessel and field cage
342   //-------------------------------------------------------------------
343
344   dm[0]= 0.;
345   dm[1]= 360.;
346   dm[2]= 6.;
347
348   //
349
350   dm[3]=-253.6;
351   dm[4]=258.;
352   dm[5]=275.5;
353
354   //
355
356   dm[6]=-250.6;
357   dm[7]=258.;
358   dm[8]=275.5; 
359
360   //
361
362   dm[9]=-250.6;
363   dm[10]=258.;
364   dm[11]=278.;
365
366   //
367
368   dm[12]=253.6;
369   dm[13]=258.;
370   dm[14]=278.; 
371
372   //
373
374   dm[15]=253.6;
375   dm[16]=264.8;
376   dm[17]=278.;  
377
378   //
379
380   dm[18]=256.6;
381   dm[19]=264.8;
382   dm[20]=278.;
383
384   gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
385
386   //----------------------------------------------------------------
387   // Tpc Outer Contaiment Vessel  
388   //  mother volume - Al, daughters - composite (sandwich)
389   //----------------------------------------------------------------
390
391   dm[0]=0.;
392   dm[1]=360.;
393   dm[2]=6.;
394
395   //
396
397   dm[3]=-250.6;
398   dm[4]=270.4;
399   dm[5]=278.;
400
401   //
402
403   dm[6]=-247.6;
404   dm[7]=270.4;
405   dm[8]=278.; 
406
407   //
408
409   dm[9]=-247.6;
410   dm[10]=274.8124;
411   dm[11]=278.;
412
413   //
414
415   dm[12]=253.6;
416   dm[13]=274.8124;
417   dm[14]=278.;
418
419   //
420
421   dm[15]=253.6;
422   dm[16]=264.8;
423   dm[17]=278.;
424
425   //
426
427   dm[18]=256.6;
428   dm[19]=264.8;
429   dm[20]=278.;
430
431   gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
432
433   // Daughter volumes - sandwich
434
435   // Tpc SAndwich 1 - Al
436
437   dm[0]=274.8124;
438   dm[1]=278.;
439   dm[2]=252.1;
440
441   gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
442
443   // Tpc SAndwich 2 - epoxy glue (I use Lexan)
444
445   dm[0] += 5.e-3;
446   dm[1] -= 5.e-3;
447
448   gMC->Gsvolu("TSA2","TUBE",idtmed[14],dm,3);
449
450   // Tpc SAndwich 3 - Tedlar
451
452   dm[0] += 0.01;
453   dm[1] -= 0.01;
454   
455   gMC->Gsvolu("TSA3","TUBE",idtmed[9],dm,3);
456
457
458   // Tpc SAndwich 4 - fiber glass (G10)
459
460   dm[0] += 3.8e-3;
461   dm[1] -= 3.8e-3;
462
463   gMC->Gsvolu("TSA4","TUBE",idtmed[12],dm,3);  
464
465   // Tpc SAndwich 5 - NOMEX honeycomb
466
467   dm[0] += 0.075;
468   dm[1] -= 0.075;   
469   
470   gMC->Gsvolu("TSA5","TUBE",idtmed[6],dm,3);
471
472   // 5->4->3->2->1->TCOV
473
474
475   gMC->Gspos("TSA5",1,"TSA4",0.,0.,0.,0,"ONLY");
476   gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
477   gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
478   gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");  
479
480   gMC->Gspos("TSA1",1,"TOCV",0.,0.,3.,0,"ONLY");
481
482   // TCOV-> TOIN
483
484   gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
485
486   //-------------------------------------------------------
487   //  Tpc Outer Field Cage
488   //  mother volume - Al, daughters - composite (sandwich)
489   //-------------------------------------------------------
490
491   dm[0]=0.;
492   dm[1]=360.;
493   dm[2]=6.;
494
495   //
496
497   dm[3]=-253.6;
498   dm[4]=258.;
499   dm[5]=275.5;
500
501   //
502
503   dm[6]=-250.6;
504   dm[7]=258.;
505   dm[8]=275.5;
506
507   //
508
509   dm[9]=-250.6;
510   dm[10]=258.;
511   dm[11]=260.0476;
512
513   //
514
515   dm[12]=250.6;
516   dm[13]=258.;
517   dm[14]=260.0476;
518
519   //
520
521   dm[15]=250.6;
522   dm[16]=258.;
523   dm[17]=269.6;
524
525   //
526
527   dm[18]=253.6;
528   dm[19]=258.;
529   dm[20]=269.6;
530
531   gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
532
533   // Daughter volumes 
534
535   // Tpc SAndwich 6 - Tedlar
536
537   dm[0]= 258.;
538   dm[1]= 260.0476;
539   dm[2]= 252.1;
540
541   gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3);
542
543   // Tpc SAndwich 7 - fiber glass
544
545   dm[0] += 3.8e-3;
546   dm[1] -= 3.8e-3;
547
548   gMC->Gsvolu("TSA7","TUBE",idtmed[12],dm,3);
549
550
551   // Tpc SAndwich 8 - NOMEX
552
553   dm[0] += 0.02;
554   dm[1] -= 0.02;
555
556   gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3);    
557
558   // 8->7->6->TOFC
559
560   gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY");
561   gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY"); 
562   gMC->Gspos("TSA6",1,"TOFC",0.,0.,0.,0,"ONLY");
563
564   // TOFC->TOIN 
565   // TOFC overlaps with 
566
567   gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
568
569   // TOIN->TPC
570
571   gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
572
573   // inner part
574
575   //--------------------------------------------------------------------
576   // Tpc Inner INsulator (CO2) - inner f.c. will be placed there
577   // Inner containment vessel will be placed directly in the TPC
578   //-------------------------------------------------------------------- 
579
580   dm[0]=0.;
581   dm[1]=360.;
582   dm[2]=4.;
583
584   // 
585
586   dm[3]=-253.6;
587   dm[4]=65.9;
588   dm[5]=79.2;
589
590   //
591
592   dm[6]=-73.3;
593   dm[7]=61.2;
594   dm[8]=79.2;  
595
596   //
597
598   dm[9]=73.3;
599   dm[10]=61.2;
600   dm[11]=79.2;
601
602   //
603
604   dm[12]=253.6;
605   dm[13]=65.9;
606   dm[14]=79.2;
607
608   gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,15);
609
610   // the middle part of the F.C. is thinner - carve out the strip - Ne-CO2
611
612   dm[0]=79.16;
613   dm[1]=79.2;
614   dm[2]=88.;
615
616   gMC->Gsvolu("TII1","TUBE",idtmed[1],dm,3);
617
618   gMC->Gspos("TII1",1,"TIIN",0.,0.,0.,0,"ONLY");
619
620   //-----------------------------------------------------
621   // Tpc Inner Field Cage
622   // mother volume - Al, daughters - composite (sandwich)
623   //------------------------------------------------------
624
625   dm[0]=0.;
626   dm[1]=360.;
627   dm[2]=10.;
628
629   //
630
631   dm[3]=-253.6;
632   dm[4]=70.3;
633   dm[5]=79.2;
634
635   //
636
637   dm[6]=-250.6;
638   dm[7]=70.3;
639   dm[8]=79.2;
640
641   //
642
643   dm[9]=-250.6;
644   dm[10]=77.0524;
645   dm[11]=79.2;
646
647   //
648
649   dm[12]=-88.;
650   dm[13]=77.0524;
651   dm[14]=79.2;
652
653   //
654
655   dm[15]=-88.;
656   dm[16]=77.0924;
657   dm[17]=79.16;
658
659   //
660
661   dm[18]=88.;
662   dm[19]=77.0924;
663   dm[20]=79.16;
664
665   //
666
667   dm[21]=88.;
668   dm[22]=77.0524;
669   dm[23]=79.2;
670
671   //
672
673   dm[24]=250.6;
674   dm[25]=77.0524;
675   dm[26]=79.2;
676
677   //
678
679   dm[27]=250.6;
680   dm[28]=70.3;
681   dm[29]=79.2;
682
683   //
684
685   dm[30]=253.6;
686   dm[31]=70.3;
687   dm[32]=79.2;
688
689   gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,33);
690
691   // daughter volumes - central part
692
693   // Tpc Sandwich 9 -Tedlar
694
695   dm[0]=77.0924;
696   dm[1]=79.16;
697   dm[2]=88.;
698
699   gMC->Gsvolu("TSA9","TUBE",idtmed[9],dm,3); 
700
701   // Tpc Sandwich 10 - fiber glass (G10) 
702
703   dm[0] += 3.8e-3;
704   dm[1] -= 3.8e-3;
705
706   gMC->Gsvolu("TS10","TUBE",idtmed[12],dm,3);
707
708   // Tpc Sandwich 11 - NOMEX
709
710   dm[0] += 0.03;
711   dm[1] -= 0.03; 
712
713   gMC->Gsvolu("TS11","TUBE",idtmed[6],dm,3);
714
715   // 11->10->9->TIFC
716
717   gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
718   gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
719
720   gMC->Gspos("TSA9",1,"TIFC",0.,0.,0.,0,"ONLY");
721
722   // daughter volumes - outer parts (reinforced)
723
724   // Tpc Sandwich 12 -Tedlar
725
726   dm[0]=77.0524;
727   dm[1]=79.2;
728   dm[2]=82.05;
729
730   gMC->Gsvolu("TS12","TUBE",idtmed[9],dm,3);
731
732   // Tpc Sandwich 13 - fiber glass (G10) 
733
734   dm[0] += 3.8e-3;
735   dm[1] -= 3.8e-3;
736
737   gMC->Gsvolu("TS13","TUBE",idtmed[12],dm,3);
738
739   // Tpc Sandwich 14 - NOMEX
740
741   dm[0] += 0.07;
742   dm[1] -= 0.07;  
743
744   gMC->Gsvolu("TS14","TUBE",idtmed[6],dm,3);
745
746   // 14->13->12->TIFC
747
748   gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
749   gMC->Gspos("TS13",1,"TS12",0.,0.,0.,0,"ONLY"); 
750
751   gMC->Gspos("TS12",1,"TIFC",0.,0.,170.05,0,"ONLY");
752   gMC->Gspos("TS12",2,"TIFC",0.,0.,-170.05,0,"ONLY"); 
753
754   // place this inside the inner insulator
755
756   gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
757
758   // and now in the TPC...
759
760   gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
761
762   //---------------------------------------------------------
763   // Tpc Inner Containment vessel - Cones
764   //---------------------------------------------------------
765
766   dm[0]=0.;
767   dm[1]=360.;
768   dm[2]=8.;
769
770   //
771
772   dm[3]=71.8;
773   dm[4]=56.9;
774   dm[5]=59.4;
775
776   //
777
778   dm[6]=73.;
779   dm[7]=56.9;
780   dm[8]=59.4;
781
782   //
783
784   dm[9]=73.;
785   dm[10]=56.9;
786   dm[11]=61.2;
787
788   //
789
790   dm[12]=73.3;
791   dm[13]=56.9;
792   dm[14]=61.2;
793
794   //
795    
796   dm[15]=73.3;
797   dm[16]=60.9;
798   dm[17]=61.2;
799
800   // 
801
802   dm[18]=253.6;
803   dm[19]=65.6;
804   dm[20]=65.9; 
805
806   //
807
808   dm[21]=253.6;
809   dm[22]=65.6;
810   dm[23]=74.6;
811
812   //
813
814   dm[24]=256.6;
815   dm[25]=65.6;
816   dm[26]=74.6;
817
818   gMC->Gsvolu("TICC","PCON",idtmed[4],dm,27);
819
820   Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
821
822   // reflection matrix
823   
824   theta1 = 90.;
825   phi1   = 0.;
826   theta2 = 90.;
827   phi2   = 270.;
828   theta3 = 180.;
829   phi3   = 0.;
830
831   AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
832
833   gMC->Gspos("TICC",1,"TPC ",0.,0.,0.,0,"ONLY");
834   gMC->Gspos("TICC",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
835
836
837   //---------------------------------------------------------
838   // Tpc Inner Containment vessel - Middle part -Al
839   //---------------------------------------------------------
840
841   dm[0]=0.;
842   dm[1]=360.;
843   dm[2]=6.;
844
845   //
846
847   dm[3]=-71.6;
848   dm[4]=60.2;
849   dm[5]=61.2;
850
851   //
852
853   dm[6]=-69.1;
854   dm[7]=60.2;
855   dm[8]=61.2;
856
857   //
858
859   dm[9]=-69.1;
860   dm[10]=60.6224;
861   dm[11]=61.2;  
862
863   //
864
865   dm[12]=69.1;
866   dm[13]=60.6224;
867   dm[14]=61.2;
868
869   //
870
871   dm[15]=69.1;
872   dm[16]=60.2;
873   dm[17]=61.2;
874
875   //
876
877   dm[18]=71.6;
878   dm[19]=60.2;
879   dm[20]=61.2;
880
881   gMC->Gsvolu("TICM","PCON",idtmed[4],dm,21);
882
883   // Tpc Sandwich 15 - Al
884
885   dm[0]=60.6224;
886   dm[1]=61.2;
887   dm[2]=70.1;
888
889   gMC->Gsvolu("TS15","TUBE",idtmed[4],dm,3);
890
891   // Tpc Sandwich 16 -  epoxy glue
892
893   dm[0] += 5.e-3;
894   dm[1] -= 5.e-3;
895
896   gMC->Gsvolu("TS16","TUBE",idtmed[14],dm,3);
897
898   // Tpc Sandwich 17 - Tedlar
899
900   dm[0] += 0.01;
901   dm[1] -= 0.01;
902
903   gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
904
905   // Tpc Sandwich 18 - carbon fiber
906
907   dm[0] += 3.8e-3;
908   dm[1] -= 3.8e-3;
909
910   gMC->Gsvolu("TS18","TUBE",idtmed[15],dm,3);  
911
912   // Tpc Sandwich 19 - Nomex
913
914   dm[0] += 0.02;
915   dm[1] -= 0.02;
916
917   gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3); 
918
919   // 19->18->17->16->15-> TICM
920
921   gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY"); 
922   gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
923   gMC->Gspos("TS17",1,"TS16",0.,0.,0.,0,"ONLY");
924   gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
925
926   gMC->Gspos("TS15",1,"TICM ",0.,0.,0.,0,"ONLY");
927  
928
929   // TPc inner cont. vessel Joints
930
931   dm[0]=60.2;
932   dm[1]=61.2;
933   dm[2]=0.5;
934
935   gMC->Gsvolu("TPJ1","TUBE",idtmed[4],dm,3);
936
937   gMC->Gspos("TPJ1",1,"TPC ",0.,0.,72.3,0,"ONLY");
938   gMC->Gspos("TPJ1",2,"TPC ",0.,0.,-72.3,0,"ONLY");
939
940   //
941
942   dm[0]=0.;
943   dm[1]=360.;
944   dm[2]=4.;
945
946   //
947
948   dm[3]=70.8;
949   dm[4]=58.4;
950   dm[5]=60.1;
951
952   //
953
954   dm[6]=71.2;
955   dm[7]=58.4;
956   dm[8]=60.1;
957
958   //
959
960   dm[9]=71.2;
961   dm[10]=58.4;
962   dm[11]=59.4;
963
964   //
965
966   dm[12]=71.6;
967   dm[13]=58.4;
968   dm[14]=59.4;
969
970   gMC->Gsvolu("TPJ2","PCON",idtmed[4],dm,15);
971
972   gMC->Gspos("TPJ2",1,"TPC ",0.,0.,0.,0,"ONLY");
973   gMC->Gspos("TPJ2",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
974
975
976
977   // Tpc Inner Containment vessel Seal (Viton, I use Lexan for a time being)
978
979   dm[0]=58.4;
980   dm[1]=61.2;
981   dm[2]=0.1;
982
983   gMC->Gsvolu("TICS","TUBE",idtmed[14],dm,3);
984
985   gMC->Gspos("TICS",1,"TPC ",0.,0.,71.7,0,"ONLY");
986   gMC->Gspos("TICS",2,"TPC ",0.,0.,-71.7,0,"ONLY"); 
987
988   // TICM -> TPC
989
990   gMC->Gspos("TICM",1,"TPC ",0.,0.,0.,0,"ONLY");
991
992   //
993
994   nRotMat++; // prepare for the next rotation matrix 
995
996   //---------------------------------------------------------
997   //  Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
998   //  and its daughters (HV membrane, rods, readout chambers)
999   //---------------------------------------------------------
1000
1001   dm[0]= 79.2;
1002   dm[1]= 258.0;
1003   dm[2]= 253.6;
1004
1005   gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3); 
1006
1007   // sector opening angles
1008
1009   Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
1010   Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1011
1012   // sector angle shift
1013
1014   Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
1015
1016
1017   // All above parameters are identical for inner and outer
1018   // sectors. The distinction is kept for the historical reasons
1019   // and eventually will disappear.
1020
1021   Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
1022   Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
1023   Float_t space;
1024
1025   //-------------------------------------------------------------------------
1026   //   Tpc Inner Readout Chambers 
1027   //-------------------------------------------------------------------------
1028
1029   dm[0]= 14.483;
1030   dm[1]= 23.3345; 
1031   dm[2]= 1.6; // thickness
1032   dm[3]= 25.1;
1033
1034   gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
1035
1036   // this volume will be positioned in the empty space
1037   // of the end-cap to avoid overlaps
1038
1039   dm[0]= 13.7305;
1040   dm[1]= 21.1895;
1041   dm[2]= 2.25;
1042   dm[3]= 21.15;
1043
1044   gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
1045
1046
1047   //------------------------------------------------
1048   // Tpc Inner readout chamber Pad Plane
1049   //------------------------------------------------
1050
1051   dm[0]= 14.483;
1052   dm[1]= 23.3345;
1053   dm[2]= 0.5;
1054   dm[3]= 25.1;
1055
1056   gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
1057
1058   // 
1059
1060   dm[0] -= 1.218511934;
1061   dm[1] -= 1.218511934;
1062   dm[2] = 0.35;
1063
1064   gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
1065
1066   gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
1067
1068   gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
1069
1070
1071   //----------------------------------------------
1072   // Tpc Readout Chambers Empty spaces - for both
1073   // inner and outer sectors
1074   //----------------------------------------------
1075
1076   gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
1077
1078   // Inner sector - 4 spaces
1079
1080
1081   dm[3] = 4.7625;
1082   dm[0] = 12.472;
1083
1084   Float_t rr = 90.52;
1085   Float_t zz;
1086
1087   zz= -12.7875;
1088   
1089   space = rr*tanAlpha-dm[0];
1090
1091   for(Int_t nsLow=0;nsLow<4;nsLow++){
1092
1093     rr += 9.525;
1094     dm[1]= rr*tanAlpha - space;  
1095
1096     dm[2]=0.8;
1097
1098     gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
1099
1100     //
1101
1102     dm[2] = 1.2;
1103
1104     gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
1105
1106     rr += 0.4;
1107     dm[0] = rr*tanAlpha - space;
1108     zz += (0.4+9.525); 
1109
1110   }
1111
1112   dm[0]= 12.472;
1113   // dm[1] - this is the dm[1] from the previous TRCE
1114   dm[2]= 1.05;
1115   dm[3]= 19.65;
1116
1117   gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);   
1118
1119   //
1120   // TPc Space for Connectors
1121   //
1122
1123   dm[0]= .3;
1124   dm[1]= .3;
1125   dm[2]= 4.5;
1126
1127   gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
1128
1129   // TPC Connectors
1130
1131   dm[0]= .25;
1132   dm[1]= .15;
1133   dm[2]= 3.75;
1134
1135   gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3); 
1136
1137   gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
1138
1139   zz = -12.7875;
1140
1141
1142   Float_t alpha;
1143   Float_t astep;
1144
1145   // inner part of the inner sector - 2 x 20 holes
1146   
1147   astep = 20.00096874/19.;
1148
1149   alpha = 10.00048437-astep;
1150
1151   Float_t x1,x2;
1152
1153     x1 = 13.31175725;
1154     x1 -= 0.996357832; 
1155
1156     x2 = 15.06180253;
1157     x2 -= 1.163028812;
1158
1159   Int_t ncon;
1160
1161   for(ncon=0;ncon<20;ncon++){
1162
1163     phi1 = 0.;
1164     theta1 = 90.+alpha;
1165     phi2=90.;
1166     theta2 = 90.;
1167     phi3 = (alpha>0) ? 0. : 180.;
1168     theta3 = TMath::Abs(alpha);
1169
1170     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1171
1172  
1173
1174     gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1175     gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1176
1177
1178     x1 -= 1.296357833;
1179     x2 -= 1.463028812;
1180
1181     alpha -= astep;   
1182     nRotMat++; 
1183
1184   }
1185
1186   // outer part of the inner sector - 2 x 25 holes
1187
1188    astep = 20.00096874/24.; 
1189    alpha = 10.00048437-astep;
1190
1191    x1 = 16.81184781;
1192    x1 -= 1.016295986;
1193
1194    x2 = 18.5618931;
1195    x2 -= 1.150914854;
1196
1197   for(ncon=0;ncon<25;ncon++){
1198
1199     phi1 = 0.;
1200     theta1 = 90.+alpha;
1201     phi2=90.;
1202     theta2 = 90.;
1203     phi3 = (alpha>0) ? 0. : 180.;
1204     theta3 = TMath::Abs(alpha);
1205
1206     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1207
1208  
1209
1210     gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1211     gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1212
1213
1214     x1 -= 1.316295986;
1215     x2 -= 1.450914854;
1216
1217     alpha -= astep;   
1218     nRotMat++; 
1219
1220   }  
1221
1222   //--------------------------------------------------------------------------
1223   //  TPC Outer Readout Chambers
1224   //  this is NOT a final design
1225   //--------------------------------------------------------------------------
1226
1227   dm[0]= 23.3875;
1228   dm[1]= 43.524;
1229   dm[2]= 1.5; //thickness
1230   dm[3]= 57.1;
1231
1232   gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1233
1234   //------------------------------------------------
1235   // Tpc Outer readout chamber Pad Plane
1236   //------------------------------------------------
1237
1238   dm[2]= 0.5;
1239
1240   gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1241
1242   dm[0] -= 1.218511934;
1243   dm[1] -= 1.218511934;
1244   dm[2] = 0.35;
1245
1246   gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
1247
1248   gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1249
1250   gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1251
1252   // empty space
1253
1254   dm[0]= 21.035;
1255   dm[1]= 38.7205;
1256   dm[2]= 0.7; 
1257   dm[3]= 50.15;
1258
1259   gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);  
1260
1261   dm[0]= 22.2935;
1262   dm[1]= 40.5085;
1263   dm[2]= 2.25;
1264   dm[3]= 51.65;
1265
1266   gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1267
1268   dm[0]= 21.35;
1269   dm[1]= 38.7205;
1270   dm[2]= 2.25;
1271   dm[3]= 50.15;
1272
1273   gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1274
1275   //-----------------------------------------------
1276   // Tpc Services Support Wheel
1277   //-----------------------------------------------
1278
1279   dm[0]=0.;
1280   dm[1]=360.;
1281   dm[2]=18.;
1282   dm[3]=2.;
1283
1284   dm[4]= -5.;
1285   dm[5]= 77.017;
1286   dm[6]= 255.267;
1287
1288   dm[7]= 5.;
1289   dm[8]= dm[5];
1290   dm[9]= dm[6];
1291
1292   gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1293
1294   // Tpc Services Wheel Cover
1295
1296   dm[4]= -0.5;
1297   dm[7]= 0.5;
1298
1299   gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1300
1301   // Tpc Service wheel Cover Empty space
1302    
1303   dm[0]= 10.99;
1304   dm[1]= 39.599;
1305   dm[2]= .5;
1306   dm[3]= 81.125;
1307
1308   gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1309
1310   // Tpc services Wheel Empty Spaces
1311
1312   dm[0]= 13.18017507;
1313   dm[1]= 44.61045938;
1314   dm[2]= 4.;
1315   dm[3]= 89.125;
1316
1317   gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1318
1319   // Tpc Services Wheel Bars
1320
1321   gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1322
1323   // bars-> TWES
1324
1325   dm[2]= 4.;
1326   dm[3]= .4;
1327
1328   dm[0]= 13.8149522;
1329   dm[1]= 13.95601379;
1330   
1331   gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1332
1333   dm[0]= 43.83462067; 
1334   dm[1]= 43.97568225;
1335
1336   gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1337
1338   // TPc ELectronics - right now 30% X0 Si
1339
1340   dm[0]= 14.03813696;
1341   dm[1]= 43.3524075;
1342   dm[2]= 1.404;
1343   dm[3]= 83.125;
1344
1345   gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1346   gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1347
1348   //--------------------------------------------------------------------------
1349   //  End caps
1350   //--------------------------------------------------------------------------
1351
1352   // TPc Main Wheel - Al
1353
1354   dm[0]= 74.9;
1355   dm[1]= 264.4;
1356   dm[2]= 3.0;
1357
1358   gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1359
1360   //--------------------------------------------------------------------------
1361   //  Tpc Empty Space for the Readout chambers
1362   //--------------------------------------------------------------------------  
1363
1364   Float_t rLow= 86.2;
1365   Float_t rUp= 243.5;
1366   Float_t dR = 0.5*(rUp-rLow);
1367
1368   space= 1.5/cosAlpha; // wheel ribs are 3.0 cm wide
1369
1370   dm[0]= rLow*tanAlpha-space;
1371   dm[1]= rUp*tanAlpha-space;
1372   dm[2] = 3.0;
1373   dm[3]= dR;
1374
1375   gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1376
1377   // TIC1->TESR
1378
1379   gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1380
1381   // TOC1->TESR
1382
1383   gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1384
1385   // Tpc Empty Space Bars - Al (daughters of TESR)
1386
1387   Float_t zBar;
1388
1389   gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1390
1391   // lower bar
1392
1393   dm[0]= rLow*tanAlpha-space;
1394   dm[1]= 88.7*tanAlpha-space;
1395   dm[2]= 2.25;
1396   dm[3]= 1.275;
1397
1398   zBar = -dR+dm[3];
1399
1400   gMC->Gsposp("TESB",1,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1401
1402   // middle bar
1403
1404   dm[0]= 131.65*tanAlpha-space;
1405   dm[1]= 136.5*tanAlpha-space;
1406   dm[3]= 2.425;
1407
1408   zBar = -dR +131.65+dm[3]-rLow;
1409
1410   gMC->Gsposp("TESB",2,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);  
1411
1412   // upper bar
1413
1414   dm[0]= 240.4*tanAlpha-space;
1415   dm[1]= rUp*tanAlpha-space;
1416   dm[3]= 1.55;
1417
1418   zBar = dR-dm[3];
1419
1420   gMC->Gsposp("TESB",3,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1421
1422   //------------------------------------------------------
1423   //  TPc Lower "S" Sectors 
1424   //------------------------------------------------------
1425
1426
1427   Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow();
1428   Float_t inSecUpEdge =  fTPCParam->GetInnerRadiusUp();
1429
1430   dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1431   dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1432   dm[2] = 0.5*(250. - 5.e-3);
1433   dm[3] = 0.5*(inSecUpEdge-inSecLowEdge);  
1434
1435   gMC->Gsvolu("TPLS", "TRD1", idtmed[2], dm, 4); // sensitive 
1436
1437
1438   //----------------------------------------------------------
1439   //  TPc Upper Sectors
1440   //----------------------------------------------------------
1441
1442   Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow();
1443   Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp();
1444
1445   dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;  
1446   dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;  
1447   dm[2] = 0.5*(250. - 5.e-3);
1448   dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge);
1449
1450   gMC->Gsvolu("TPUS", "TRD1", idtmed[2], dm, 4); // sensitive
1451
1452
1453
1454   // sensitive strips
1455
1456     gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive
1457
1458     Int_t nofStrips,nstr;
1459     Float_t r1,r2,zs;
1460     Float_t stripThick = 0.01; // 100 microns
1461     Float_t deadSpace;
1462
1463     // inner sector
1464
1465
1466     // if all lower sectors selected define only 1 strip
1467
1468     nofStrips=((fSecAL <0)||(fSecAL>=0 && fSens<0)) ? 1 : fTPCParam->GetNRowLow(); 
1469     deadSpace = fTPCParam->GetInnerWireMount();
1470
1471     dm[2] = 0.5*(250. - 5.e-3);
1472     dm[3] = 0.5 * stripThick;
1473
1474     for(nstr=0;nstr<nofStrips;nstr++){
1475
1476       r1 = fTPCParam->GetPadRowRadiiLow(nstr);
1477       r2 = r1 + stripThick;     
1478       dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1479       dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1480       zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge);
1481       zs += r1;
1482       zs += dm[3];
1483     
1484       gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4);
1485
1486
1487     }
1488
1489     // strips only if several upper sectors selected end fSens > 0
1490
1491     if(fSecAU >=0 && fSens >0){
1492
1493     Int_t nsSave = nofStrips;
1494
1495     // outer sector
1496
1497     nofStrips = fTPCParam->GetNRowUp();
1498     deadSpace = fTPCParam->GetOuterWireMount();
1499
1500     dm[2] = 0.5*(250. - 5.e-3);
1501     dm[3] = 0.5 * stripThick;
1502
1503   
1504     for(nstr=0;nstr<nofStrips;nstr++){
1505     
1506       r1 = fTPCParam->GetPadRowRadiiUp(nstr); 
1507       r2 = r1 + stripThick;
1508       dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1509       dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1510       zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge);
1511       zs += r1;
1512       zs += dm[3];
1513
1514       gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4);
1515
1516      }    
1517     }    
1518
1519
1520   //-------------------------------------------------------
1521   //  positioning of the empty spaces into the main wheel
1522   //  and readout chambers and sectors into the drift gas
1523   //-------------------------------------------------------
1524
1525   Float_t rCenter,xc,yc;
1526   Float_t rInner,rOuter; // center of the inner and outer chamber
1527
1528   rCenter = rLow+dR;
1529
1530   rInner = 108.07;
1531   rOuter = 190.68;
1532
1533
1534   for(Int_t ns=0; ns<nInnerSector;ns++){
1535
1536     phi1 = ns * innerOpenAngle + innerAngleShift;
1537     phi1 *= kRaddeg; // in degrees
1538
1539     phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1540
1541     if (phi1 > 360.) phi1 -= 360.;
1542
1543     theta1 = 90.;
1544     phi2   = 90.;
1545     theta2 = 180.;
1546     phi3   = ns * innerOpenAngle + innerAngleShift;
1547     phi3 *= kRaddeg; // in degrees
1548
1549     phi3 = (Float_t)TMath::Nint(phi3);
1550       
1551     if(phi3 > 360.) phi3 -= 360.;
1552
1553     theta3 = 90.;
1554
1555     // "holes"->End plate
1556
1557     xc = rCenter*TMath::Cos(phi3*kDegrad);
1558     yc = rCenter*TMath::Sin(phi3*kDegrad);
1559
1560     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1561
1562     gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1563
1564     // TSCE->TSWC (services wheel volumes)
1565
1566     xc = 166.142*TMath::Cos(phi3*kDegrad);
1567     yc = 166.142*TMath::Sin(phi3*kDegrad);
1568
1569     gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1570     gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1571
1572
1573     // readout chambers->TDGN (drift gas)
1574
1575     xc = rInner*TMath::Cos(phi3*kDegrad);
1576     yc = rInner*TMath::Sin(phi3*kDegrad);
1577
1578     gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY");
1579
1580     // here lower sectors 
1581
1582     if(fSecAL <0){
1583
1584       // all lower sectors are positioned
1585
1586       gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1587       gMC->
1588         Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1589     }
1590     else{
1591
1592       // only selected sectors are positioned (up to 6 sectors)
1593
1594       for(Int_t sel=0;sel<6;sel++){
1595
1596         if(fSecLows[sel] == ns){
1597           gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1598         }
1599         else if(fSecLows[sel] == ns+nInnerSector){
1600          gMC->
1601          Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1602         }
1603       }
1604     } // lower sectors finished
1605
1606     
1607     xc = rOuter*TMath::Cos(phi3*kDegrad);
1608     yc = rOuter*TMath::Sin(phi3*kDegrad);
1609
1610     gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1611
1612     // here upper sectors 
1613
1614     if(fSecAU <0){
1615
1616       // all upper sectors
1617
1618       gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1619       gMC->
1620         Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1621     }
1622     else{
1623
1624       // only selected sectors (up to 12)
1625
1626       for(Int_t sel=0;sel<12;sel++){
1627         if(fSecUps[sel] == ns+2*nInnerSector){
1628           gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1629         }         
1630         else if(fSecUps[sel] == ns+2*nInnerSector+nOuterSector){
1631          gMC->
1632           Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY"); 
1633         }
1634       }
1635     } // upper sectors finished
1636
1637
1638     nRotMat++;
1639
1640     theta2 = 0.; // reflection
1641
1642     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1643
1644     xc = rInner*TMath::Cos(phi3*kDegrad);
1645     yc = rInner*TMath::Sin(phi3*kDegrad);
1646
1647     gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1648
1649     xc = rOuter*TMath::Cos(phi3*kDegrad);
1650     yc = rOuter*TMath::Sin(phi3*kDegrad);
1651
1652     gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1653
1654     nRotMat++;
1655
1656   } 
1657   // TPMW->TPC
1658
1659   gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1660   gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[0],"ONLY");
1661
1662   //---------------------------------------------------------
1663   //  Tpc High Voltage Membrane - 100 microns of mylar
1664   //---------------------------------------------------------
1665
1666   dm[0]=82.8;
1667   dm[1]=252.;
1668   dm[2]=0.005;
1669
1670   gMC->Gsvolu("THVM","TUBE",idtmed[8],dm,3);
1671
1672   gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY");
1673
1674   // Tpc High Voltage membrane Holders
1675
1676   gMC->Gsvolu("THVH","TUBE",idtmed[4],dm,0);
1677
1678   
1679
1680   // inner
1681
1682   dm[0]=79.3;
1683   dm[1]=82.8;
1684   dm[2]=0.2;
1685
1686   gMC->Gsposp("THVH",1,"TDGN",0.,0.,0.,0,"ONLY",dm,3);
1687   
1688   // outer
1689
1690   dm[0]= 252.;
1691   dm[1]= 257.9;
1692   dm[2]= 0.4;
1693
1694   gMC->Gsposp("THVH",2,"TDGN",0.,0.,0.,0,"ONLY",dm,3);
1695
1696   //----------------------------------------------------------
1697   // TPc Support Rods - MAKROLON
1698   //----------------------------------------------------------
1699
1700   dm[0]= 0.9;
1701   dm[1]= 1.2;
1702
1703   gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,0); // inner and outer rods differ
1704
1705
1706   for(Int_t nrod=0;nrod<18;nrod++){
1707     Float_t angle=innerOpenAngle*(Float_t)nrod;
1708
1709     xc=81.5*TMath::Cos(angle);
1710     yc=81.5*TMath::Sin(angle); 
1711
1712     dm[2]=126.7;
1713
1714     gMC->Gsposp("TPSR",nrod+1,"TDGN",xc,yc,126.9,0,"ONLY",dm,3); 
1715     gMC->Gsposp("TPSR",nrod+19,"TDGN",xc,yc,-126.9,0,"ONLY",dm,3);
1716
1717     dm[2]=126.6;
1718
1719     xc=254.25*TMath::Cos(angle);
1720     yc=254.25*TMath::Sin(angle);   
1721       
1722     // rod number 54 contans the HV cable
1723
1724     if(nrod<17) {
1725       gMC->Gsposp("TPSR",nrod+37,"TDGN",xc,yc,127.,0,"ONLY",dm,3);
1726       gMC->Gsposp("TPSR",nrod+54,"TDGN",xc,yc,-127.,0,"ONLY",dm,3);
1727     }
1728     
1729   }
1730
1731   //----------------------------------------------------------
1732   // Tpc High Voltage Rod - MAKROLON + Copper cable
1733   //----------------------------------------------------------
1734
1735   // rod with cable (Left)
1736
1737   dm[0]=0.;
1738   dm[1]=2.25;
1739   dm[2]=126.6;
1740
1741   gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1742
1743   // HV cable
1744  
1745   dm[0]=0.;
1746   dm[1]=0.3;
1747   dm[2]=126.6;
1748
1749   gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);  
1750
1751   // empty space
1752
1753   dm[0]=0.3;
1754   dm[1]=1.;
1755   dm[2]=126.6;
1756
1757   gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1758
1759   gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1760   gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1761
1762   // rod without cable
1763
1764   dm[0]=1.8;
1765   dm[1]=2.25;
1766   dm[2]=126.6;
1767
1768   gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1769
1770   gMC->Gspos("THVL",1,"TDGN",xc,yc,-127.,0,"ONLY");  
1771   gMC->Gspos("THVR",1,"TDGN",xc,yc,127.,0,"ONLY");
1772
1773   gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY"); 
1774  
1775   // services wheel cover -> wheel
1776
1777
1778   gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1779   gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1780
1781
1782   // put the wheel into the TPC
1783
1784   gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1785   gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1786
1787   //
1788
1789   gMC->Gsord("TPMW",6);
1790   gMC->Gsord("TSSW",6);
1791   gMC->Gsord("TSWC",6);
1792   if(fSecAL >=0)  gMC->Gsord("TPLS",3);
1793   if(fSecAU >=0 && fSens >0)  gMC->Gsord("TPUS",3);
1794   gMC->Gsord("TDGN",6);
1795
1796   // put the TPC into ALIC (main mother volume)
1797
1798   gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY");
1799
1800  
1801
1802 } // end of function
1803  
1804 //_____________________________________________________________________________
1805 void AliTPCv2::DrawDetector()
1806 {
1807   //
1808   // Draw a shaded view of the Time Projection Chamber version 1
1809   //
1810
1811   // Set everything unseen
1812   gMC->Gsatt("*", "seen", -1);
1813   // 
1814   // Set ALIC mother transparent
1815   gMC->Gsatt("ALIC","SEEN",0);
1816   //
1817   // Set the volumes visible
1818   //
1819
1820   gMC->Gsatt("TPC ","SEEN",0);
1821   gMC->Gsatt("TOIN","SEEN",1);
1822   gMC->Gsatt("TOIN","COLO",7);
1823   gMC->Gsatt("TOCV","SEEN",1);
1824   gMC->Gsatt("TOCV","COLO",4);
1825   gMC->Gsatt("TSA1","SEEN",0);
1826   gMC->Gsatt("TSA2","SEEN",0);
1827   gMC->Gsatt("TSA3","SEEN",0);
1828   gMC->Gsatt("TSA4","SEEN",0);  
1829   gMC->Gsatt("TSA5","SEEN",0);
1830   gMC->Gsatt("TOFC","SEEN",1);
1831   gMC->Gsatt("TOFC","COLO",4);
1832   gMC->Gsatt("TSA6","SEEN",0);
1833   gMC->Gsatt("TSA7","SEEN",0);
1834   gMC->Gsatt("TSA8","SEEN",0);    
1835   gMC->Gsatt("TIIN","SEEN",1);
1836   gMC->Gsatt("TIIN","COLO",7);
1837   gMC->Gsatt("TII1","SEEN",0);
1838   gMC->Gsatt("TIFC","SEEN",1);
1839   gMC->Gsatt("TIFC","COLO",4);
1840   gMC->Gsatt("TSA9","SEEN",0); 
1841   gMC->Gsatt("TS10","SEEN",0);
1842   gMC->Gsatt("TS11","SEEN",0);
1843   gMC->Gsatt("TS12","SEEN",0);
1844   gMC->Gsatt("TS13","SEEN",0);
1845   gMC->Gsatt("TS14","SEEN",0);
1846   gMC->Gsatt("TICC","SEEN",0);
1847   gMC->Gsatt("TICM","SEEN",0);
1848   gMC->Gsatt("TS15","SEEN",0);
1849   gMC->Gsatt("TS16","SEEN",0);
1850   gMC->Gsatt("TS17","SEEN",0);
1851   gMC->Gsatt("TS18","SEEN",0);  
1852   gMC->Gsatt("TS19","SEEN",0); 
1853   gMC->Gsatt("TPJ1","SEEN",0);
1854   gMC->Gsatt("TPJ2","SEEN",0);
1855   gMC->Gsatt("TICS","SEEN",0);
1856   gMC->Gsatt("TDGN","SEEN",0); 
1857   gMC->Gsatt("TIRC","SEEN",0);
1858   gMC->Gsatt("TIC1","SEEN",1);
1859   gMC->Gsatt("TIPP","SEEN",0);
1860   gMC->Gsatt("TIC3","SEEN",0);
1861   gMC->Gsatt("TRCE","SEEN",0);
1862   gMC->Gsatt("TPSC","SEEN",0);
1863   gMC->Gsatt("TPCC","SEEN",0); 
1864   gMC->Gsatt("TORC","SEEN",0);
1865   gMC->Gsatt("TOPP","SEEN",0);
1866   gMC->Gsatt("TOC3","SEEN",0);
1867   gMC->Gsatt("TOC1","SEEN",1);
1868   gMC->Gsatt("TSSW","SEEN",1);
1869   gMC->Gsatt("TSWC","SEEN",1);
1870   gMC->Gsatt("TSSW","COLO",3);
1871   gMC->Gsatt("TSWC","COLO",3);
1872   gMC->Gsatt("TSCE","COLO",6);
1873   gMC->Gsatt("TSCE","SEEN",1);
1874   gMC->Gsatt("TWES","SEEN",0);
1875   gMC->Gsatt("TSWB","SEEN",0);
1876   gMC->Gsatt("TPEL","SEEN",0);
1877   gMC->Gsatt("TPMW","SEEN",1);
1878   gMC->Gsatt("TESR","SEEN",1);
1879   gMC->Gsatt("TPMW","COLO",12);
1880   gMC->Gsatt("TIC1","COLO",5);
1881   gMC->Gsatt("TOC1","COLO",5);
1882   gMC->Gsatt("TESB","SEEN",0);
1883   gMC->Gsatt("THVM","SEEN",1);
1884   gMC->Gsatt("THVM","COLO",11);
1885   gMC->Gsatt("THVH","SEEN",0);
1886   gMC->Gsatt("TPSR","SEEN",0); 
1887   gMC->Gsatt("THVL","SEEN",0);
1888   gMC->Gsatt("THVC","SEEN",0);  
1889   gMC->Gsatt("THVE","SEEN",0);
1890   gMC->Gsatt("THVR","SEEN",0);
1891   gMC->Gsatt("TPSS","SEEN",0);
1892   gMC->Gsatt("TPUS","SEEN",0);
1893   gMC->Gsatt("TPLS","SEEN",0);
1894
1895   //
1896   gMC->Gdopt("hide", "on");
1897   gMC->Gdopt("shad", "on");
1898   gMC->Gsatt("*", "fill", 7);
1899   gMC->SetClipBox(".");
1900   gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1901   gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1902   gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1903   gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1904   gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1905   gMC->DefaultRange();
1906   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1907   gMC->Gdhead(1111, "Time Projection Chamber");
1908   gMC->Gdman(18, 4, "MAN");
1909   gMC->Gdopt("hide","off");
1910 }
1911
1912 //_____________________________________________________________________________
1913 void AliTPCv2::CreateMaterials()
1914 {
1915   //
1916   // Define materials for version 2 of the Time Projection Chamber
1917   //
1918  
1919   AliTPC::CreateMaterials();
1920 }
1921
1922 //_____________________________________________________________________________
1923 void AliTPCv2::Init()
1924 {
1925   //
1926   // Initialises version 2 of the TPC after that it has been built
1927   //
1928
1929   Int_t *idtmed = fIdtmed->GetArray();
1930   
1931   AliTPC::Init();
1932
1933
1934   
1935   fIdSens=gMC->VolId("TPSS");  
1936
1937   fIdLSec=gMC->VolId("TPLS"); // lower sector 
1938   fIdUSec=gMC->VolId("TPUS"); // upper sector
1939
1940   gMC->SetMaxNStep(30000); // max. number of steps increased
1941
1942   gMC->Gstpar(idtmed[2],"LOSS",5); // specific energy loss
1943
1944   printf("%s: *** TPC version 2 initialized ***\n",ClassName());
1945   printf("%s: Maximum number of steps = %d\n",ClassName(),gMC->GetMaxNStep());
1946
1947   //
1948   
1949 }
1950
1951 //_____________________________________________________________________________
1952 void AliTPCv2::StepManager()
1953 {
1954   //
1955   // Called for every step in the Time Projection Chamber
1956   //
1957
1958   //
1959   // parameters used for the energy loss calculations
1960   //
1961   const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1962   const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1963   const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation 
1964  
1965  
1966   const Float_t kbig = 1.e10;
1967
1968   Int_t id,copy;
1969   Float_t hits[4];
1970   Int_t vol[2];  
1971   TLorentzVector p;
1972   
1973   vol[1]=0; // preset row number to 0
1974
1975   //
1976
1977   gMC->SetMaxStep(kbig);
1978   
1979   if(!gMC->IsTrackAlive()) return; // particle has disappeared
1980   
1981   Float_t charge = gMC->TrackCharge();
1982   
1983   if(TMath::Abs(charge)<=0.) return; // take only charged particles
1984   
1985   // check the sensitive volume
1986
1987   id = gMC->CurrentVolID(copy); // current volume Id
1988
1989   if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting()) &&
1990        ((id == fIdLSec) || (id == fIdUSec)) ) {
1991
1992     AddTrackReference(gAlice->CurrentTrack());
1993   }
1994
1995   if(id == fIdLSec){
1996     vol[0] = copy-1; // lower sector number
1997   }
1998   else if(id == fIdUSec){
1999     vol[0] = copy+fTPCParam->GetNInnerSector()-1; // upper sector number
2000   }
2001   else if(id == fIdSens && gMC->IsTrackEntering()){
2002  
2003     // track is entering the sensitive strip
2004     
2005     vol[1]= copy-1; // row number (absolute)
2006    
2007     // sector type
2008  
2009     id = gMC->CurrentVolOffID(1,copy);
2010
2011     if(id == fIdLSec){
2012
2013       // lower sector
2014      
2015       vol[0] = copy-1; // sector number
2016
2017     }
2018     else {
2019    
2020       // upper sector
2021
2022       vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number
2023       vol[1] -= fTPCParam->GetNRowLow(); // row number (starts also from 0)  
2024
2025     } 
2026
2027     if(vol[1] == 0){
2028   
2029       // because Jouri wants to have this
2030
2031       gMC->TrackMomentum(p);
2032       hits[0]=p[0];
2033       hits[1]=p[1];
2034       hits[2]=p[2];
2035       hits[3]=0.; // this hit has no energy loss
2036       // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2037
2038       AddHit(gAlice->CurrentTrack(), vol,hits);  //MI change
2039
2040     }
2041
2042      gMC->TrackPosition(p);
2043      hits[0]=p[0];
2044      hits[1]=p[1];
2045      hits[2]=p[2];
2046      hits[3]=0.; // this hit has no energy loss
2047      // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2048
2049      AddHit(gAlice->CurrentTrack(), vol,hits);  //MI change    
2050
2051   }
2052   else return;
2053     
2054   //-----------------------------------------------------------------
2055   //  charged particle is in the sensitive volume
2056   //-----------------------------------------------------------------
2057   
2058   if(gMC->TrackStep() > 0) {
2059     
2060     Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
2061     nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
2062     
2063     gMC->TrackPosition(p);
2064     hits[0]=p[0];
2065     hits[1]=p[1];
2066     hits[2]=p[2];
2067     hits[3]=(Float_t)nel;
2068     
2069     // Add this hit
2070     
2071     // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2072     if (fHitType&&2){
2073       gMC->TrackMomentum(p);
2074       Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
2075       Float_t precision =   (momentum>0.1) ? 0.002 :0.01;
2076       fTrackHits->SetHitPrecision(precision);
2077     }
2078     AddHit(gAlice->CurrentTrack(), vol,hits);  //MI change 
2079     
2080   } 
2081   
2082   // Stemax calculation for the next step
2083   
2084   Float_t pp;
2085   TLorentzVector mom;
2086   gMC->TrackMomentum(mom);
2087   Float_t ptot=mom.Rho();
2088   Float_t betaGamma = ptot/gMC->TrackMass();
2089   
2090   Int_t pid=gMC->TrackPid();
2091   if((pid==kElectron || pid==kPositron) && ptot > 0.002)
2092     { 
2093       pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
2094     }
2095   else
2096     {
2097
2098       betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg
2099       pp=kprim*BetheBloch(betaGamma); 
2100    
2101       if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
2102     }
2103   
2104   Double_t rnd = gMC->GetRandom()->Rndm();
2105   
2106   gMC->SetMaxStep(-TMath::Log(rnd)/pp);
2107   
2108 }
2109
2110 //_____________________________________________________________________________
2111 Float_t AliTPCv2::BetheBloch(Float_t bg)
2112 {
2113   //
2114   // Bethe-Bloch energy loss formula
2115   //
2116   const Double_t kp1=0.76176e-1;
2117   const Double_t kp2=10.632;
2118   const Double_t kp3=0.13279e-4;
2119   const Double_t kp4=1.8631;
2120   const Double_t kp5=1.9479;
2121
2122   Double_t dbg = (Double_t) bg;
2123
2124   Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
2125
2126   Double_t aa = TMath::Power(beta,kp4);
2127   Double_t bb = TMath::Power(1./dbg,kp5);
2128
2129   bb=TMath::Log(kp3+bb);
2130   
2131   return ((Float_t)((kp2-aa-bb)*kp1/aa));
2132 }
2133
2134