removed obsolete AliTPCDigitsDisplay.C
[u/mrichter/AliRoot.git] / TPC / AliTPCv0.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 1.13.8.2  2000/04/10 08:33:44  kowal2
19
20 Updated readout chambers
21
22 Revision 1.13.8.1  2000/04/10 07:56:53  kowal2
23 Not used anymore - removed
24
25 Revision 1.13  1999/11/04 17:28:06  fca
26 Correct barrel part of HV Degrader
27
28 Revision 1.12  1999/10/08 06:27:23  fca
29 Corrected bug in the HV degrader geometry, thanks to G.Tabary
30
31 Revision 1.11  1999/10/04 13:39:54  fca
32 Correct array index problem
33
34 Revision 1.10  1999/09/29 09:24:34  fca
35 Introduction of the Copyright and cvs Log
36
37 */
38
39 ///////////////////////////////////////////////////////////////////////////////
40 //                                                                           //
41 //  Time Projection Chamber version 0 -- "coarse" TPC                        //
42 //                                                                           //
43 //Begin_Html
44 /*
45 <img src="picts/AliTPCv0Class.gif">
46 */
47 //End_Html
48 //                                                                           //
49 //                                                                           //
50 ///////////////////////////////////////////////////////////////////////////////
51
52 #include <TMath.h>
53 #include <TGeometry.h>
54 #include <TNode.h>
55 #include <TTUBE.h>
56 #include "AliTPCv0.h"
57 #include "AliRun.h"
58 #include <iostream.h>
59 #include <fstream.h>
60 #include "AliMC.h"
61 #include "AliConst.h"
62
63 #include "AliTPCParam.h"
64 #include "AliTPCDigitsArray.h"
65
66 ClassImp(AliTPCv0)
67  
68 //_____________________________________________________________________________
69 AliTPCv0::AliTPCv0(const char *name, const char *title) 
70          :AliTPC(name, title)
71 {
72   //
73   // Standard creator for TPC version 0
74   //
75 }
76
77 //_____________________________________________________________________________
78 void AliTPCv0::CreateGeometry()
79 {
80   //
81   // Creation of the TPC coarse geometry (version 0)
82   // Origin Marek Kowalski Cracow
83   //
84   //Begin_Html
85   /*
86     <img src="picts/AliTPCv0.gif">
87   */
88   //End_Html
89   //Begin_Html
90   /*
91     <img src="picts/AliTPCv0Tree.gif">
92   */
93   //End_Html
94
95
96   Int_t *idtmed = fIdtmed->GetArray();
97
98   Float_t dm[21];
99   Int_t idrotm[120];
100
101   Int_t nRotMat = 0;
102
103
104   // ---------------------------------------------------- 
105   //          FIELD CAGE WITH ENDCAPS - G10
106   //          THIS IS ALSO A TPC MOTHER VOLUME 
107   // ---------------------------------------------------- 
108
109   dm[0] = 76.;
110   dm[1] = 278.;
111   dm[2] = 275.;
112
113   gMC->Gsvolu("TPC ", "TUBE", idtmed[8], dm, 3); 
114
115   //-----------------------------------------------------
116   //  Endcap cover c-fibre 0.86% X0
117   //-----------------------------------------------------
118
119   dm[0] = 78.;
120   dm[1] = 258.;
121   dm[2] = 0.95;
122
123   gMC->Gsvolu("TPEC","TUBE",idtmed[10],dm,3);
124
125   //-----------------------------------------------------
126   // Drift gas , leave 2 cm at the outer radius
127   // and inner raddius
128   //-----------------------------------------------------
129
130   dm[0] = 78.;
131   dm[1] = 258.;
132   dm[2] = 250.;
133
134   gMC->Gsvolu("TGAS", "TUBE", idtmed[3], dm, 3);
135
136
137   //------------------------------------------------------
138   //  membrane holder - carbon fiber
139   //------------------------------------------------------
140
141
142   gMC->Gsvolu("TPMH","TUBE",idtmed[6],dm,0);
143
144   dm[0] = 252.;
145   dm[1] = 258.;
146   dm[2] = 0.2;
147
148   gMC->Gsposp("TPMH",1,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
149  
150   dm[0] = 78.;
151   dm[1] = 82.;
152   dm[2] = 0.1;
153
154   gMC->Gsposp("TPMH",2,"TGAS",0.,0.,0.,0,"ONLY",dm,3);
155
156   //----------------------------------------------------------
157   //  HV membrane - 25 microns of mylar
158   //----------------------------------------------------------
159
160   dm[0] = 82.;
161   dm[1] = 252.;
162   dm[2] = 0.00125;
163
164   gMC->Gsvolu("TPHV","TUBE",idtmed[5],dm,3);
165
166   gMC->Gspos("TPHV",1,"TGAS",0.,0.,0.,0,"ONLY");
167
168   gMC->Gspos("TGAS",1,"TPC ",0.,0.,0.,0,"ONLY");
169
170   //----------------------------------------------------------
171   // "side" gas volume, the same as the drift gas
172   // the readout chambers are placed there.  
173   //----------------------------------------------------------
174
175   dm[0] = 78.;
176   dm[1] = 258.;
177   dm[2] = 0.5*(275. - 250.);
178    
179   gMC->Gsvolu("TPSG", "TUBE", idtmed[2], dm, 3);
180
181   Float_t z_side = dm[2]; // 1/2 of the side gas thickness
182
183   //-----------------------------------------------------------
184   //   Readout chambers , 25% of X0, I use Al as the material
185   //-----------------------------------------------------------
186
187   Float_t InnerOpenAngle = fTPCParam->GetInnerAngle();
188   Float_t OuterOpenAngle = fTPCParam->GetOuterAngle();
189
190   Float_t InnerAngleShift = fTPCParam->GetInnerAngleShift();
191   Float_t OuterAngleShift = fTPCParam->GetOuterAngleShift();
192
193
194   Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
195   Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
196
197
198   Float_t InSecLowEdge = fTPCParam->GetInnerRadiusLow();
199   Float_t InSecUpEdge =  fTPCParam->GetInnerRadiusUp();
200
201   Float_t OuSecLowEdge = fTPCParam->GetOuterRadiusLow();
202   Float_t OuSecUpEdge = fTPCParam->GetOuterRadiusUp();
203
204   Float_t SecThick = 2.225; // Al
205
206
207   //  S (Inner) sectors
208
209   Float_t LowEdge = fTPCParam->GetInnerFrameSpace();
210
211   dm[0] = InSecLowEdge*TMath::Tan(0.5*InnerOpenAngle)-LowEdge;
212   dm[1] = InSecUpEdge*TMath::Tan(0.5*InnerOpenAngle)-LowEdge;
213   dm[2] = SecThick;
214   dm[3] = 0.5*(InSecUpEdge-InSecLowEdge);
215
216   Float_t xCenterS = InSecLowEdge+dm[3];
217
218   gMC->Gsvolu("TRCS", "TRD1", idtmed[0], dm, 4); 
219
220   //  L (Outer) sectors
221
222   Float_t UpEdge = fTPCParam->GetOuterFrameSpace();
223
224   dm[0] = OuSecLowEdge*TMath::Tan(0.5*OuterOpenAngle)-UpEdge;
225   dm[1] = OuSecUpEdge*TMath::Tan(0.5*OuterOpenAngle)-UpEdge;
226   dm[2] = SecThick;
227   dm[3] = 0.5*(OuSecUpEdge-OuSecLowEdge);
228
229   Float_t xCenterL = OuSecLowEdge+dm[3];  
230
231   gMC->Gsvolu("TRCL", "TRD1", idtmed[0], dm, 4);
232
233   Float_t z1 = -z_side + SecThick*0.5;
234
235   //------------------------------------------------------------------
236   // Positioning of the S-sector readout chambers
237   //------------------------------------------------------------------
238
239   Int_t ns;
240   Float_t theta1,theta2,theta3;
241   Float_t phi1,phi2,phi3;
242   Float_t alpha;
243   Float_t x,y;
244
245   for(ns=0;ns<nInnerSector;ns++){
246     
247     phi1 = ns * InnerOpenAngle + 270.*kDegrad + InnerAngleShift;
248     phi1 *= kRaddeg; // in degrees
249
250     phi1 = (Float_t)TMath::Nint(phi1);
251
252     if (phi1 > 360.) phi1 -= 360.;
253       
254     theta1 = 90.;
255     phi2   = 90.;
256     theta2 = 180.;
257     phi3   = ns * InnerOpenAngle + InnerAngleShift;
258     phi3 *= kRaddeg; // in degrees
259
260     phi3 = (Float_t)TMath::Nint(phi3);
261       
262     if(phi3 > 360.) phi3 -= 360.;
263
264     theta3 = 90.;
265
266     alpha = phi3*kDegrad;
267
268     x = xCenterS * TMath::Cos(alpha);
269     y = xCenterS * TMath::Sin(alpha); 
270  
271     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);  
272      
273     gMC->Gspos("TRCS", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY");
274
275     nRotMat++;     
276
277   }
278     
279   //-------------------------------------------------------------------
280   //  Positioning of the L-sectors readout chambers
281   //-------------------------------------------------------------------
282     
283   for(ns=0;ns<nOuterSector;ns++){
284     phi1 = ns * OuterOpenAngle + 270.*kDegrad + OuterAngleShift;
285     phi1 *= kRaddeg; // in degrees
286
287     phi1 = (Float_t)TMath::Nint(phi1);
288     
289
290     if (phi1 > 360.) phi1 -= 360.;
291       
292     theta1 = 90.;
293     phi2   = 90.;
294     theta2 = 180.;
295     phi3   = ns * OuterOpenAngle+OuterAngleShift;
296     phi3 *= kRaddeg; // in degrees
297
298     phi3 = (Float_t)TMath::Nint(phi3);
299
300       
301     if(phi3 > 360.) phi3 -= 360.;
302
303     theta3 = 90.;
304
305     alpha = phi3*kDegrad;
306
307     x = xCenterL * TMath::Cos(alpha);
308     y = xCenterL * TMath::Sin(alpha); 
309  
310     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);  
311      
312
313     gMC->Gspos("TRCL", ns+1, "TPSG", x, y, z1, idrotm[nRotMat], "ONLY"); 
314
315     nRotMat++;   
316
317   }
318
319   Float_t z0 = z_side - 0.95;
320
321   gMC->Gspos("TPEC",1,"TPSG",0.,0.,z0,0,"ONLY");
322
323   // ========================================================== 
324   //                  wheels 
325   // ========================================================== 
326
327   //
328   //  auxilary structures
329   //
330
331
332   gMC->Gsvolu("TPWI","TUBE",idtmed[24],dm,0); // "air" 
333
334   // ---------------------------------------------------------- 
335   //       Large wheel -> positioned in the TPC 
336   // ---------------------------------------------------------- 
337   
338
339   z0 = 263.5; // TPC length - 1/2 spoke wheel width
340
341   dm[0] = 258.;
342   dm[1] = 278.;
343   dm[2] = 11.5;
344   
345   gMC->Gsvolu("TPWL", "TUBE", idtmed[0], dm, 3); 
346
347   dm[0] = dm[0]+2.;
348   dm[1] = 278.;
349   dm[2] = dm[2]-2.;
350
351   gMC->Gsposp("TPWI",1,"TPWL",0.,0.,0.,0,"ONLY",dm,3);
352
353   gMC->Gspos("TPWL", 1, "TPC ", 0, 0, z0, 0, "ONLY");
354   gMC->Gspos("TPWL", 2, "TPC ", 0, 0, -z0, 0, "ONLY");
355
356   //
357   //  Outer vessel + CO2 HV degrader
358   //
359
360   dm[0] = 260.;
361   dm[1] = 278.;
362   dm[2] = 252.;
363
364   gMC->Gsvolu("TPCO","TUBE",idtmed[12],dm,3);
365
366   dm[0] = 275.;
367   dm[1] = 278.;
368   
369   gMC->Gsvolu("TPOV","TUBE",idtmed[10],dm,3);
370
371   gMC->Gspos("TPOV",1,"TPCO",0.,0.,0.,0,"ONLY");
372
373
374   // G10 plugs
375
376   dm[0] = 258.;
377   dm[1] = 260.;
378   dm[2] = 1.;
379
380   gMC->Gsvolu("TPG1","TUBE",idtmed[8],dm,3);
381   gMC->Gspos("TPG1",1,"TPCO",0.,0.,251.,0,"ONLY");
382   gMC->Gspos("TPG1",2,"TPCO",0.,0.,-251.,0,"ONLY");  
383
384   gMC->Gspos("TPCO",1,"TPC ",0.,0.,0.,0,"ONLY");
385
386
387   //----------------------------------------------------------
388   //  Small wheel -> positioned in "side gas
389   //----------------------------------------------------------
390
391   dm[0] = 78.;
392   dm[1] = 82.;
393   dm[2] = 11.5;
394
395   gMC->Gsvolu("TPWS", "TUBE", idtmed[0], dm, 3);
396
397   dm[0] = 78.;
398   dm[1] = dm[1]-2;
399   dm[2] = dm[2]-2.;
400
401   gMC->Gsvolu("TPW1", "TUBE", idtmed[2], dm, 3);
402   
403   gMC->Gspos("TPW1", 1, "TPWS", 0., 0., 0., 0, "ONLY");
404
405   z0 = 1.; // spoke wheel is shifted w.r.t. center of the "side gas"
406
407   gMC->Gspos("TPWS", 1, "TPSG", 0, 0, z0, 0, "ONLY");
408
409
410   // to avoid overlaps
411
412   dm[0] = 76.;
413   dm[1] = 78.;
414   dm[2] = 11.5;
415
416   gMC->Gsvolu("TPS1","TUBE",idtmed[0],dm,3);
417
418   dm[2] = 9.5;
419
420   gMC->Gsvolu("TPS2","TUBE",idtmed[24],dm,3);
421
422   gMC->Gspos("TPS2",1,"TPS1",0.,0.,0.,0,"ONLY");
423
424   z0= 263.5;
425   
426   gMC->Gspos("TPS1",1,"TPC ",0.,0.,z0,0,"ONLY");
427   gMC->Gspos("TPS1",2,"TPC ",0.,0.,-z0,0,"ONLY");
428
429   // G10 plug
430
431   dm[0] = 76.;
432   dm[1] = 78.;
433   dm[2] = 1.;
434
435   gMC->Gsvolu("TPG2","TUBE",idtmed[8],dm,3);
436
437   z0 = 251.;
438
439   gMC->Gspos("TPG2",1,"TPC ",0.,0.,z0,0,"ONLY");
440   gMC->Gspos("TPG2",2,"TPC ",0.,0.,-z0,0,"ONLY");
441
442
443   //---------------------------------------------------------
444   //  central wheel  6 (radial direction) x 4 (along z) cm2
445   //---------------------------------------------------------
446
447   dm[0] = 140.;
448   dm[1] = 146.;
449   dm[2] = 2.;
450
451   gMC->Gsvolu("TPWC","TUBE",idtmed[0],dm,3);
452
453   dm[0] = dm[0] + 2.;
454   dm[1] = dm[1] - 2.;
455   dm[2] = dm[2] - 1.;
456
457   gMC->Gsposp("TPWI",2,"TPWC",0.,0.,0.,0,"ONLY",dm,3);
458
459   z0 = z_side - 1.9 - 2.;
460
461   gMC->Gspos("TPWC",1,"TPSG",0.,0.,z0,0,"ONLY");
462
463   //
464
465   gMC->Gsvolu("TPSE","BOX ",idtmed[24],dm,0); // "empty" part of the spoke 
466
467  
468   //---------------------------------------------------------
469   //  inner spokes (nSectorInner)
470   //---------------------------------------------------------
471
472   dm[0] = 0.5*(139.9-82.1);
473   dm[1] = 3.;
474   dm[2] = 2.;
475
476   Float_t x1 = dm[0]+82.;
477
478   gMC->Gsvolu("TPSI","BOX",idtmed[0],dm,3);
479
480   dm[1] = dm[1]-1.;
481   dm[2] = dm[2]-1.;
482
483   gMC->Gsposp("TPSE",1,"TPSI",0.,0.,0.,0,"ONLY",dm,3);
484
485   for(ns=0;ns<nInnerSector;ns++){
486
487     phi1 = 0.5*InnerOpenAngle + ns*InnerOpenAngle + InnerAngleShift;
488     theta1=90.;
489     phi1 *=kRaddeg;
490
491     phi1 = (Float_t)TMath::Nint(phi1);
492
493     phi2 = phi1+90.;
494     if(phi2>360.) phi2 -= 360.;
495     theta2=90.;
496     phi3=0.;
497     theta3=0.;
498
499     alpha = phi1 * kDegrad;
500     x     = x1 * TMath::Cos(alpha);
501     y     = x1 * TMath::Sin(alpha);    
502
503    AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
504
505    gMC->Gspos("TPSI",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");  
506
507    nRotMat++;
508
509   }
510
511   //-------------------------------------------------------------
512   // outer spokes (nSectorOuter)
513   //-------------------------------------------------------------
514
515   dm[0] = 0.5*(257.9-146.1);
516   dm[1] = 3.;
517   dm[2] = 2.;
518
519   x1 = dm[0] + 146.;
520
521   gMC->Gsvolu("TPSO","BOX ",idtmed[0],dm,3);
522
523   dm[1] = dm[1] - 1.;
524   dm[2] = dm[2] - 1.;
525
526   gMC->Gsposp("TPSE",2,"TPSO",0.,0.,0.,0,"ONLY",dm,3);
527
528   for(ns=0;ns<nOuterSector;ns++){
529
530     phi1 = 0.5*OuterOpenAngle + ns*OuterOpenAngle + OuterAngleShift;
531     theta1=90.;
532     phi1 *=kRaddeg;
533
534     phi1 = (Float_t)TMath::Nint(phi1);
535
536     phi2 = phi1+90.;
537     if(phi2>360.) phi2 -= 360.;
538     theta2=90.;
539     phi3=0.;
540     theta3=0.;
541
542     alpha = phi1 * kDegrad;
543     x     = x1 * TMath::Cos(alpha);
544     y     = x1 * TMath::Sin(alpha);    
545
546    AliMatrix(idrotm[nRotMat],theta1,phi1,theta2,phi2,theta3,phi3);
547
548    gMC->Gspos("TPSO",ns+1,"TPSG",x,y,z0,idrotm[nRotMat],"ONLY");  
549
550    nRotMat++;
551
552   }  
553   
554
555   
556   // -------------------------------------------------------- 
557   //         put the readout chambers into the TPC 
558   // -------------------------------------------------------- 
559
560   theta1 = 90.;
561   phi1   = 0.;
562   theta2 = 90.;
563   phi2   = 270.;
564   theta3 = 180.;
565   phi3   = 0.;
566   
567   AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
568   
569   z0 = z_side + 250.;
570   
571   gMC->Gspos("TPSG", 1, "TPC ", 0, 0, z0, 0, "ONLY");
572   gMC->Gspos("TPSG", 2, "TPC ", 0, 0, -z0, idrotm[nRotMat], "ONLY");
573   
574   gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
575
576   //----------------------------------------------------
577   //  Inner vessel and HV degrader
578   //----------------------------------------------------
579
580   dm[0] = 0.;
581   dm[1] = 360.;
582   dm[2] = 4.;
583   
584   dm[3] = -250.;
585   dm[4] = 74.4;
586   dm[5] = 76.;
587
588   dm[6] = -64.5;
589   dm[7] = 50.;
590   dm[8] = 76.;
591
592   dm[9] = 64.5;
593   dm[10] = 50.;
594   dm[11] = 76.;
595
596   dm[12] = 250.;
597   dm[13] = 74.4;
598   dm[14] = 76.;
599
600   gMC->Gsvolu("TPVD", "PCON", idtmed[12], dm, 15); // CO2
601
602   // cone parts
603
604   dm[0] = 0.;
605   dm[1] = 360.;
606   dm[2] = 2.;
607
608   dm[3] = 64.5;
609   dm[4] = 50.;
610   dm[5] = 51.6;
611  
612   dm[6] = 250.;
613   dm[7] = 74.4;
614   dm[8] = 76.;
615
616
617   gMC->Gsvolu("TIVC","PCON",idtmed[11],dm,9); // C-fibre
618
619   gMC->Gspos("TIVC",1,"TPVD",0.,0.,0.,0,"ONLY");
620   gMC->Gspos("TIVC",2,"TPVD",0.,0.,0.,idrotm[nRotMat],"ONLY");
621
622   // barrel part
623
624   dm[0] = 50.;
625   dm[1] = 50.5;
626   dm[2] = 64.5;
627
628   gMC->Gsvolu("TIVB","TUBE",idtmed[9],dm,3);
629
630   gMC->Gspos("TIVB",1,"TPVD",0.,0.,0.,0,"ONLY");
631
632   gMC->Gspos("TPVD",1,"ALIC",0.,0.,0.,0,"ONLY");
633
634   
635
636   
637
638   // --------------------------------------------------- 
639   //               volumes ordering 
640   // --------------------------------------------------- 
641   gMC->Gsord("TPSG", 6);
642  
643 } // end of function
644
645
646 //_____________________________________________________________________________
647 void AliTPCv0::CreateMaterials()
648 {
649   //
650   // Define materials for the TPC
651   //
652   AliTPC::CreateMaterials();
653 }
654
655 //_____________________________________________________________________________
656 void AliTPCv0::DrawDetector()
657 {
658   //
659   // Draw a shaded view of the Time Projection Chamber version 0
660   //
661
662   // Set everything unseen
663   gMC->Gsatt("*", "seen", -1);
664   // 
665   // Set ALIC mother transparent
666   gMC->Gsatt("ALIC","SEEN",0);
667   //
668   // Set the volumes visible
669   gMC->Gsatt("TPC","SEEN",0);
670   gMC->Gsatt("TGAS","SEEN",0);
671   gMC->Gsatt("TPSG","SEEN",0);
672   gMC->Gsatt("TPHV","SEEN",1);
673   gMC->Gsatt("TPMH","SEEN",1);
674   gMC->Gsatt("TPEC","SEEN",0);
675   gMC->Gsatt("TRCS","SEEN",1);
676   gMC->Gsatt("TRCL","SEEN",1);
677   gMC->Gsatt("TPWL","SEEN",1);
678   gMC->Gsatt("TPWI","SEEN",1);
679   gMC->Gsatt("TPWS","SEEN",1);
680   gMC->Gsatt("TPW1","SEEN",1);
681   gMC->Gsatt("TPS1","SEEN",1);
682   gMC->Gsatt("TPS2","SEEN",1);
683   gMC->Gsatt("TPG1","SEEN",1);
684   gMC->Gsatt("TPG2","SEEN",1);
685   gMC->Gsatt("TPWC","SEEN",1);
686   gMC->Gsatt("TPSI","SEEN",1); 
687   gMC->Gsatt("TPSO","SEEN",1);
688   gMC->Gsatt("TPCO","SEEN",1);
689   gMC->Gsatt("TPOV","SEEN",1);
690   gMC->Gsatt("TPVD","SEEN",1);
691   //
692   gMC->Gdopt("hide", "on");
693   gMC->Gdopt("shad", "on");
694   gMC->Gsatt("*", "fill", 7);
695   gMC->SetClipBox(".");
696   gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
697   gMC->DefaultRange();
698   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
699   gMC->Gdhead(1111, "Time Projection Chamber");
700   gMC->Gdman(18, 4, "MAN");
701   gMC->Gdopt("hide","off");
702 }
703
704 //_____________________________________________________________________________
705 void AliTPCv0::Init()
706 {
707   //
708   // Initialise Time Projection Chamber version 0
709   //
710   printf("TPC version 0 initialized\n");
711 }
712
713 //_____________________________________________________________________________
714 void AliTPCv0::StepManager()
715 {
716   //
717   // Procedure called at each step in the TPC
718   //
719 }