Patch for the tracker
[u/mrichter/AliRoot.git] / TPC / AliTPCv1.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 /* $Id$ */
17
18 //
19 ///////////////////////////////////////////////////////////////////////////////
20 //                                                                           //
21 //  Time Projection Chamber version 1 -- detailed TPC and fast simulation    //
22 //                                                                           // 
23 //Begin_Html
24 /*
25 <img src="picts/AliTPCv1Class.gif">
26 */
27 //End_Html
28 //                                                                           //
29 //                                                                           //
30 ///////////////////////////////////////////////////////////////////////////////
31
32 #include <Riostream.h>
33 #include <stdlib.h>
34 #include <TInterpreter.h>
35 #include <TMath.h>
36 #include <TVirtualMC.h>
37 #include <TString.h>
38 #include <TSystem.h>
39
40 #include "AliConst.h"
41 #include "AliRun.h"
42 #include "AliTPCDigitsArray.h"
43 #include "AliTPCParam.h"
44 #include "AliTPCParamSR.h"
45 #include "AliTPCv1.h"
46 #include "TLorentzVector.h"
47 #include "AliMC.h"
48 #include "TGeoManager.h"
49 #include "TGeoVolume.h"
50 #include "TGeoPcon.h"
51 #include "TGeoTube.h"
52 #include "TGeoPgon.h"
53 #include "TGeoTrd1.h"
54 #include "TGeoCompositeShape.h"
55 #include "TGeoPara.h"
56 ClassImp(AliTPCv1)
57
58 //_____________________________________________________________________________
59
60   AliTPCv1::AliTPCv1():AliTPC(),fIdSens(0)
61 {
62
63   fHitType = 1;
64
65 }
66  
67 //_____________________________________________________________________________
68 AliTPCv1::AliTPCv1(const char *name, const char *title) 
69   :AliTPC(name, title),fIdSens(0)
70  {
71   //
72   // Standard constructor for Time Projection Chamber
73   //
74
75
76   if (fTPCParam)
77      fTPCParam->Write(fTPCParam->GetTitle());
78
79   fHitType=1;
80 }
81
82 //_____________________________________________________________________________
83 void AliTPCv1::CreateGeometry()
84 {
85   //-------------------------------------------------------------
86   // Creates geometry for Time Projection Chamber version 1
87   // Detailed geometry -- Fast simulation - space points
88   // at the pad-rows centers
89   // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
90   //-----------------------------------------------------------
91
92   //Begin_Html
93   /*
94     <img src="picts/AliTPC.gif">
95   */
96   //End_Html
97   //Begin_Html
98   /*
99     <img src="picts/AliTPCv1Tree.gif">
100   */
101   //End_Html
102   //----------------------------------------------------------
103   // This geometry is written using TGeo class
104   // Firstly the shapes are defined, and only then the volumes
105   // What is recognized by the MC are volumes
106   //----------------------------------------------------------
107   //
108   //  tpc - this will be the mother volume
109   //
110
111   //
112   // here I define a volume TPC
113   // retrive the medium name with "TPC_" as a leading string
114   //
115   TGeoPcon *tpc = new TGeoPcon(0.,360.,20); //20 sections
116   //
117   tpc->DefineSection(0,-291.,77.,278.);
118   tpc->DefineSection(1,-270,77.,278.);
119   //
120   tpc->DefineSection(2,-270.,77.,278.);
121   tpc->DefineSection(3,-259.6,70.,278.);
122   //
123   tpc->DefineSection(4,-259.6,68.1,278.);
124   tpc->DefineSection(5,-253.6,68.1,278.);
125   //
126   tpc->DefineSection(6,-253.6,68.,278.);
127   tpc->DefineSection(7,-74.0,60.8,278.);
128   //
129   tpc->DefineSection(8,-74.0,60.1,278.);
130   tpc->DefineSection(9,-73.3,60.1,278.);
131   //
132   tpc->DefineSection(10,-73.3,56.9,278.); 
133   tpc->DefineSection(11,73.3,56.9,278.);
134   //
135   tpc->DefineSection(12,73.3,60.1,278.);
136   tpc->DefineSection(13,74.0,60.1,278.);
137   //
138   tpc->DefineSection(14,74.0,60.8,278.);
139   tpc->DefineSection(15,253.6,65.5,278.);
140   //
141   tpc->DefineSection(16,253.6,65.6,278.);
142   tpc->DefineSection(17,259.6,65.6,278.);
143   //
144   tpc->DefineSection(18,259.6,70.0,278.);
145   tpc->DefineSection(19,291.,77.,278.);
146   //
147   TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
148   TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
149   //
150   // drift volume - sensitive volume, extended beyond the
151   // endcaps, because of the alignment
152   //
153   TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
154   dvol->DefineSection(0,-260.,74.5,264.4);
155   dvol->DefineSection(1,-253.6,74.5,264.4);
156   //
157   dvol->DefineSection(2,-253.6,76.6774,258.);
158   dvol->DefineSection(3,253.6,76.6774,258.); 
159   //
160   dvol->DefineSection(4,253.6,74.5,264.4);
161   dvol->DefineSection(5,260.,74.5,264.4);
162   //
163   TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-1");
164   TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
165   //
166   //
167   v1->AddNode(v9,1);
168   //
169   // outer insulator
170   //
171   TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
172   //
173   tpco->DefineSection(0,-256.6,264.8,278.);
174   tpco->DefineSection(1,-253.6,264.8,278.);
175   //
176   tpco->DefineSection(2,-253.6,258.,278.);
177   tpco->DefineSection(3,250.6,258.,278.);
178   //
179   tpco->DefineSection(4,250.6,258.,275.5);
180   tpco->DefineSection(5,253.6,258.,275.5);
181   //
182   TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
183   TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
184   //
185   // outer containment vessel
186   //
187   TGeoPcon *tocv = new TGeoPcon(0.,360.,6);  // containment vessel
188   //
189   tocv->DefineSection(0,-256.6,264.8,278.);
190   tocv->DefineSection(1,-253.6,264.8,278.);
191   //
192   tocv->DefineSection(2,-253.6,274.8124,278.);
193   tocv->DefineSection(3,247.6,274.8124,278.);  
194   //
195   tocv->DefineSection(4,247.6,270.4,278.);
196   tocv->DefineSection(5,250.6,270.4,278.);
197   //
198   TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
199   TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3); 
200   //
201   TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
202   TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
203   TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
204   TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
205   //
206   TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
207   TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
208   TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
209   TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
210   //
211   TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
212   TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
213   TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
214   TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
215
216   //-------------------------------------------------------
217   //  Tpc Outer Field Cage
218   //  daughters - composite (sandwich)
219   //-------------------------------------------------------
220
221   TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
222   //
223   tofc->DefineSection(0,-253.6,258.,269.6);
224   tofc->DefineSection(1,-250.6,258.,269.6);
225   //
226   tofc->DefineSection(2,-250.6,258.,260.0676); 
227   tofc->DefineSection(3,250.6,258.,260.0676);
228   //
229   tofc->DefineSection(4,250.6,258.,275.5);
230   tofc->DefineSection(5,253.6,258.,275.5);
231   //
232   TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3); 
233   //sandwich
234   TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
235   TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
236   TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
237   //
238   TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
239   //
240   TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
241   TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
242   TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
243   //
244   // outer part - positioning
245   //
246   tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
247   //
248   tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
249   //
250   v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
251   //
252   v2->AddNode(v3,1); v2->AddNode(v4,1); 
253   //
254   v1->AddNode(v2,1);
255   //--------------------------------------------------------------------
256   // Tpc Inner INsulator (CO2) 
257   // the cones, the central drum and the inner f.c. sandwich with a piece
258   // of the flane will be placed in the TPC
259   //--------------------------------------------------------------------
260   TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
261   //
262   tpci->DefineSection(0,-253.6,68.4,76.6774);
263   tpci->DefineSection(1,-74.0,61.2,76.6774);
264   //
265   tpci->DefineSection(2,74.0,61.2,76.6774);  
266   //
267   tpci->DefineSection(3,253.6,65.9,76.6774);
268   //
269   TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
270   //
271   // now the inner field cage - only part of flanges (2 copies)
272   //
273   TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5); 
274   TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
275   //
276  //---------------------------------------------------------
277   // Tpc Inner Containment vessel - Muon side
278   //---------------------------------------------------------
279   TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
280   //
281   tcms->DefineSection(0,-259.1,68.1,74.2);
282   tcms->DefineSection(1,-253.6,68.1,74.2);
283   //
284   tcms->DefineSection(2,-253.6,68.1,68.4);
285   tcms->DefineSection(3,-74.0,60.9,61.2);
286   //
287   tcms->DefineSection(4,-74.0,60.1,61.2);
288   tcms->DefineSection(5,-73.3,60.1,61.2);
289   //
290   tcms->DefineSection(6,-73.3,56.9,61.2);
291   tcms->DefineSection(7,-73.0,56.9,61.2);
292   //
293   tcms->DefineSection(8,-73.0,56.9,58.8);
294   tcms->DefineSection(9,-71.3,56.9,58.8);
295   //
296   TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
297   //-----------------------------------------------
298   // inner containment vessel - shaft side
299   //-----------------------------------------------
300   TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
301   //
302   tcss->DefineSection(0,71.3,56.9,58.8);
303   tcss->DefineSection(1,73.0,56.9,58.8);
304   //
305   tcss->DefineSection(2,73.0,56.9,61.2);
306   tcss->DefineSection(3,73.3,56.9,61.2);
307   //  
308   tcss->DefineSection(4,73.3,60.1,61.2);
309   tcss->DefineSection(5,74.0,60.1,61.2);
310   //
311   tcss->DefineSection(6,74.0,60.9,61.2);
312   tcss->DefineSection(7,253.6,65.6,65.9);
313   //
314   tcss->DefineSection(8,253.6,65.6,74.2);
315   tcss->DefineSection(9,258.1,65.6,74.2);
316   //
317   TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
318   //-----------------------------------------------
319   //  Inner field cage
320   //  define 4 parts and make an assembly
321   //-----------------------------------------------
322   // part1 - Al - 2 copies
323   TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
324   TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
325   // sandwich - outermost parts - 2 copies
326   TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
327   TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
328   TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
329   TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
330   //
331   TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
332   TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
333   TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
334   TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
335   //
336   // middle parts - 2 copies
337   TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
338   TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
339   TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
340   TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
341   //
342   TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
343   TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
344   TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
345   TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
346   // central part - 1 copy
347   TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns 
348   TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
349   TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
350   //
351   TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
352   TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
353   TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
354   //
355   // inner part - positioning
356   //
357   // creating a sandwich
358   tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
359   //
360   tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
361   //
362   tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
363   //
364   TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
365   //
366   tv100->AddNode(tv10,1);
367   tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
368   tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
369   tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
370   tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
371   tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
372   tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
373   //
374   v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
375   v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
376   v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1); 
377   v9->AddNode(tv100,1);
378   //
379   // central drum 
380   //
381   // flange + sandwich
382   //
383   TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
384   cfl->DefineSection(0,-71.1,59.7,61.2);
385   cfl->DefineSection(1,-68.6,59.7,61.2);
386   //
387   cfl->DefineSection(2,-68.6,60.6324,61.2);
388   cfl->DefineSection(3,68.6,60.6324,61.2); 
389   //
390   cfl->DefineSection(4,68.6,59.7,61.2);
391   cfl->DefineSection(5,71.1,59.7,61.2);  
392   //
393   TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
394   // sandwich
395   TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
396   TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
397   TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);  
398   //
399   TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
400   TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
401   TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
402   TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
403   //
404   // seals for central drum 2 copies
405   //
406   TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
407   TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
408   TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
409   v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
410   v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
411   //
412   // seal collars 
413   TGeoPcon *se = new TGeoPcon(0.,360.,6);
414   se->DefineSection(0,-72.8,59.7,61.2);
415   se->DefineSection(1,-72.3,59.7,61.2);
416   //
417   se->DefineSection(2,-72.3,58.85,61.2);
418   se->DefineSection(3,-71.6,58.85,61.2); 
419   //
420   se->DefineSection(4,-71.6,59.7,61.2);
421   se->DefineSection(5,-71.3,59.7,61.2);  
422   //
423   TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
424   //
425   TGeoTube *si = new TGeoTube(56.9,58.8,1.); 
426   TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
427   //
428   // define reflection matrix 
429   //
430   TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
431   //
432   cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
433   //
434   v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
435   v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
436   v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
437   //
438   // central membrane - 2 rings and a mylar membrane - assembly
439   //
440   TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
441   TGeoTube *oh = new TGeoTube(250.,256.,.5);
442   TGeoTube *mem = new TGeoTube(84.05,250,0.01);
443   TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
444   TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
445   TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
446   //
447   TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
448   cm->AddNode(ihv,1);
449   cm->AddNode(ohv,1);
450   cm->AddNode(memv,1);
451   v9->AddNode(cm,1);
452   //
453   // end caps - they are make as an assembly of single segments
454   // containing both readout chambers
455   //
456   Double_t openingAngle = 10.*TMath::DegToRad();
457   Double_t thick=1.5; // rib
458   Double_t shift = thick/TMath::Sin(openingAngle);
459   //
460   Double_t lowEdge = 86.3; // hole in the wheel
461   Double_t upEdge = 240.4; // hole in the wheel
462   //
463   new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
464   //
465   TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
466   //
467   hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
468   hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
469   //
470   hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
471   hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
472   //
473   Double_t ys = shift*TMath::Sin(openingAngle); 
474   Double_t xs = shift*TMath::Cos(openingAngle);
475   TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);  
476   tr->RegisterYourself();
477   TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
478   TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
479   TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
480   bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
481   bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
482   TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
483   TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
484   //
485   ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
486   //
487   // readout chambers
488   //
489   // IROC first
490   //
491    TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
492    TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
493   // empty space
494    TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
495    TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
496    ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
497    //bars
498    Double_t tga = (19.8328-12.3742)/39.3;
499    Double_t xmin,xmax;
500    xmin = 9.55*tga+12.3742;
501    xmax = 9.95*tga+12.3742;
502    TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
503    TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
504    empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
505    xmin=19.4*tga+12.3742;
506    xmax=19.9*tga+12.3742;
507    TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
508    TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
509    empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
510    xmin=29.35*tga+12.3742;
511    xmax=29.75*tga+12.3742;
512    TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2); 
513    TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);    
514    empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
515    //
516    // holes for connectors
517    //
518    TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
519    TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
520    TString fileName(gSystem->Getenv("ALICE_ROOT"));
521    fileName += "/TPC/conn_iroc.dat";
522    ifstream in;
523    in.open(fileName.Data(), ios_base::in); // asci file
524    for(Int_t i =0;i<86;i++){
525       Double_t y = 3.99;
526       Double_t x,z,ang;
527       in>>x>>z>>ang;
528       z-=26.5;
529       TGeoRotation *rrr = new TGeoRotation();
530       rrr->RotateY(ang);
531       TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
532       ibdv->AddNode(connv,i+1,trans);
533    }
534    in.close();
535    // "cap"
536    new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
537    // "hole"
538    new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
539    TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);  
540    tr1->RegisterYourself();
541    TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
542    TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
543    //
544    // pad plane and wire fixations
545    //
546    TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
547    TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
548    TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
549    TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
550    TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
551    TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
552    TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
553    //
554    TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
555    //
556    iroc->AddNode(ibdv,1);
557    iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
558    iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
559    tga =(23.3521-14.5974)/49.65; 
560    Double_t xx = 24.825*tga+14.5974-0.6;
561    iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
562    iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
563    //
564    // OROC
565    //
566    TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
567    TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
568    TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
569    TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
570    obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
571    //horizontal bars
572    tga=(38.5084-20.2938)/99.3;
573    xmin=tga*10.2+20.2938;
574    xmax=tga*10.6+20.2938;
575    TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
576    TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
577    //
578    xmin=22.55*tga+20.2938;
579    xmax=24.15*tga+20.2938;
580    TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
581    TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
582    //
583    xmin=36.1*tga+20.2938;
584    xmax=36.5*tga+20.2938;
585    TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
586    TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
587    //
588    xmin=49.0*tga+20.2938;
589    xmax=50.6*tga+20.2938;   
590    TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
591    TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
592    //
593    xmin=63.6*tga+20.2938;
594    xmax=64.0*tga+20.2938;
595    TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
596    TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
597    //
598    xmin=75.5*tga+20.2938;
599    xmax=77.15*tga+20.2938;
600    TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
601    TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
602    //
603    xmin=88.7*tga+20.2938;
604    xmax=89.1*tga+20.2938;
605    TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
606    TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
607    //
608    oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
609    oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
610    oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
611    oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
612    oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
613    oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
614    oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
615    // vertical bars
616    TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1); 
617    TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
618    TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
619    TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
620    TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
621    //
622    TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
623    TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
624    TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
625    TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
626    TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
627    //
628    oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
629    oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
630    oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
631    oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
632    oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
633    oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
634    oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
635    oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
636    //
637    // holes for connectors
638    //
639    fileName = gSystem->Getenv("ALICE_ROOT");
640    fileName += "/TPC/conn_oroc.dat";
641    in.open(fileName.Data(), ios_base::in); // asci file
642    for(Int_t i =0;i<78;i++){
643       Double_t y =3.89;
644       Double_t x,z,ang;
645       Double_t x1,z1,x2,z2;
646       in>>x>>z>>ang;        
647       Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
648       Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
649       //
650       x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;      
651       //
652       TGeoRotation *rr = new TGeoRotation();
653       rr->RotateY(ang); 
654       z1-=54.95;
655       z2-=54.95;
656       TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
657       TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
658       obdv->AddNode(connv,i+1,trans1);
659       obdv->AddNode(connv,i+79,trans2);
660    }
661    in.close();
662    // cap
663    new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
664    new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
665    TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
666    tr5->RegisterYourself();
667    TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
668    TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
669    //
670    // pad plane and wire fixations
671    //
672    TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
673    TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
674    //
675    tga=(43.5239-23.3874)/114.2;
676    TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
677    TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);  
678    xx = 57.1*tga+23.3874-0.7;
679    TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
680    TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
681    //
682    TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
683    //
684    oroc->AddNode(obdv,1);
685    oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
686    oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
687    oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
688    oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
689    // 
690    // now iroc and oroc are placed into a sector...
691    //
692    TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
693    TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
694    TGeoRotation rot1("rot1",90.,90.,0.);
695    TGeoRotation rot2("rot2");
696    rot2.RotateY(10.);
697    TGeoRotation *rot = new TGeoRotation("rot");
698    *rot=rot1*rot2;
699    //
700    Double_t x0,y0;
701    x0=110.2*TMath::Cos(openingAngle);
702    y0=110.2*TMath::Sin(openingAngle);
703    TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side 
704    TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
705    x0=188.45*TMath::Cos(openingAngle);
706    y0=188.45*TMath::Sin(openingAngle);
707    TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
708    TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
709    //
710    // A-side
711    //
712    secta->AddNode(ch,1);
713    secta->AddNode(iroc,1,combi1a);
714    secta->AddNode(oroc,1,combi2a);
715    //
716    // C-side
717    //
718    sectc->AddNode(ch,1);
719    sectc->AddNode(iroc,1,combi1c);
720    sectc->AddNode(oroc,1,combi2c);
721    //
722    // now I try to make  wheels...
723    //
724    TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
725    TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
726    //
727    for(Int_t i =0;i<18;i++){
728      Double_t phi = (20.*i);
729      TGeoRotation *r = new TGeoRotation();
730      r->RotateZ(phi);
731      wheela->AddNode(secta,i+1,r);
732      wheelc->AddNode(sectc,i+1,r); 
733     
734    }
735    // wheels in the drift volume!
736    TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
737    v9->AddNode(wheela,1,combi3);
738    v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
739    
740    //_____________________________________________________________
741    // service support wheel
742    //_____________________________________________________________
743   TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
744   sw->DefineSection(0,-4.,80.5,251.75);
745   sw->DefineSection(1,4.,80.5,251.75); 
746   TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
747   //
748   thick=1.;
749   shift = thick/TMath::Sin(openingAngle);
750   TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
751   sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
752   sh->DefineSection(1,4.,81.5-shift,250.75-shift);
753   TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
754   //
755   TGeoMedium *m9 =  gGeoManager->GetMedium("TPC_Si"); 
756   TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
757   el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
758   el->DefineSection(1,1.872,81.5-shift,250.75-shift);
759   TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si 
760   //
761   shv->AddNode(elv,1);
762   //
763   //
764   ys = shift*TMath::Sin(openingAngle);
765   xs = shift*TMath::Cos(openingAngle);
766   swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
767   // cover
768   TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
769   co->DefineSection(0,-0.5,77.,255.25);
770   co->DefineSection(1,0.5,77.,255.25);
771   TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
772   // hole in a cover
773   TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
774   shift=4./TMath::Sin(openingAngle);
775   coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
776   coh->DefineSection(1,0.5,85.-shift,247.25-shift);  
777   //
778   TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
779   //
780   ys = shift*TMath::Sin(openingAngle);
781   xs = shift*TMath::Cos(openingAngle);  
782   cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
783   //
784   // Sector as an Assembly
785   //
786   TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
787   swhs->AddNode(swv,1);
788   swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
789   swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
790   //
791   // SSW as an Assembly of sectors
792   //
793  TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
794    for(Int_t i =0;i<18;i++){
795      Double_t phi = (20.*i);
796      TGeoRotation *r = new TGeoRotation();
797      r->RotateZ(phi);
798      swheel->AddNode(swhs,i+1,r);   
799    }
800    v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
801    v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
802
803    // sensitive strips 
804    TGeoMedium *m8 = gGeoManager->GetMedium("TPC_Ne-CO2-N-2");
805    Int_t totrows;
806    totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp();
807    Double_t *upar;
808    upar=NULL;
809    gGeoManager->Volume("TPC_Strip","PGON",m8->GetId(),upar);
810    upar=new Double_t [10];
811    upar[0]=0.;
812    upar[1]=360.;
813    upar[2]=18.;
814    upar[3]=2.;
815    //
816    upar[4]=-124.8;
817    upar[7]=124.8;
818
819    Double_t rlow=fTPCParam->GetPadRowRadiiLow(0);
820
821    upar[5]=rlow;
822    upar[6]=rlow+.01;
823    upar[8]=upar[5];
824    upar[9]=upar[6];
825    //
826    gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
827    gGeoManager->Node("TPC_Strip",totrows+1,
828                      "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
829    //
830    // now, strips 
831    //
832      //lower sectors
833      for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){
834        rlow=fTPCParam->GetPadRowRadiiLow(i-1);
835        upar[5]=rlow;
836        upar[6]=rlow+.01;
837        upar[8]=upar[5];
838        upar[9]=upar[6];
839        gGeoManager->Node("TPC_Strip",i,
840                          "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
841        gGeoManager->Node("TPC_Strip",totrows+i,
842                          "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);       
843      }
844      //upper sectors
845      for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){
846        rlow=fTPCParam->GetPadRowRadiiUp(i-1); 
847        upar[5]=rlow;
848        upar[6]=rlow+.01;
849        upar[8]=upar[5];
850        upar[9]=upar[6];
851        gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(),
852                          "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); 
853        gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(),
854                          "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); 
855      }
856    
857   //----------------------------------------------------------
858   // TPc Support Rods - MAKROLON
859   //----------------------------------------------------------
860   TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
861   TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
862   TGeoMedium *m10 =  gGeoManager->GetMedium("TPC_Alumina");
863   TGeoMedium *m11 =  gGeoManager->GetMedium("TPC_Peek");
864   TGeoMedium *m12 =  gGeoManager->GetMedium("TPC_Water");
865   // upper and lower rods differ in length!
866   delete [] upar;
867   upar=NULL;
868   gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
869   upar=new Double_t [3];
870   upar[0]=1.8;
871   upar[1]=2.2;
872   
873   //
874   //HV rods - makrolon + 0.58cm (diameter) Cu
875   TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
876   TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
877   //
878   TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
879   TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
880   hvrv->AddNode(hvcv,1);
881   //
882   // resistor rods
883   //
884   TGeoTube *cri = new TGeoTube(0.,0.45,126.64); //inner 
885   TGeoTube *cro = new TGeoTube(0.,0.45,126.54); //outer 
886   TGeoTube *cwi = new TGeoTube(0.,0.15,126.64); // water inner
887   TGeoTube *cwo = new TGeoTube(0.,0.15,126.54); // water outer
888   //
889   TGeoVolume *criv = new TGeoVolume("TPC_CR_I",cri,m10);
890   TGeoVolume *crov = new TGeoVolume("TPC_CR_O",cro,m10);    
891   TGeoVolume *cwiv = new TGeoVolume("TPC_W_I",cwi,m11);
892   TGeoVolume *cwov = new TGeoVolume("TPC_W_O",cwo,m11);   
893   //
894   // ceramic rod with water
895   //
896   criv->AddNode(cwiv,1); 
897   crov->AddNode(cwov,1);
898   //
899   TGeoTube *pri =new TGeoTube(0.2,0.35,126.64); //inner 
900   TGeoTube *pro = new TGeoTube(0.2,0.35,126.54); //outer    
901   //
902   // peek rod
903   //
904   TGeoVolume *priv = new TGeoVolume("TPC_PR_I",pri,m12);
905   TGeoVolume *prov = new TGeoVolume("TPC_PR_O",pro,m12); 
906   //
907   // resistor rods assembly
908   //
909    TGeoRotation *rotr = new TGeoRotation("rotr");
910    rotr->RotateZ(-21.);
911   //
912   TGeoTube *rri = new TGeoTube(1.8,2.2,126.64);//inner
913   TGeoTube *rro = new TGeoTube(1.8,2.2,126.54);//inner
914   //
915   TGeoVolume *rriv = new TGeoVolume("TPC_RR_I",rri,m6);
916   TGeoVolume *rrov = new TGeoVolume("TPC_RR_O",rro,m6);  
917   //
918   //
919   TGeoVolumeAssembly *rrin = new TGeoVolumeAssembly("TPC_RROD_I");
920   TGeoVolumeAssembly *rrou = new TGeoVolumeAssembly("TPC_RROD_O");
921   rrin->AddNode(rriv,1);
922   rrin->AddNode(criv,1,new TGeoTranslation(0.5,0.866, 0.));
923   rrin->AddNode(criv,2,new TGeoTranslation(0.5,-0.866, 0.)); 
924   rrin->AddNode(priv,1); 
925   //
926   rrou->AddNode(rrov,1);
927   rrou->AddNode(crov,1,new TGeoTranslation(0.5,0.866, 0.));
928   rrou->AddNode(crov,2,new TGeoTranslation(0.5,-0.866, 0.)); 
929   rrou->AddNode(prov,1);   
930   for(Int_t i=0;i<18;i++){
931     Double_t angle,x,y;
932     Double_t z,r; 
933     angle=TMath::DegToRad()*20.*(Double_t)i;
934     r=81.5;
935     x=r * TMath::Cos(angle);
936     y=r * TMath::Sin(angle);
937     upar[2]=126.64; //lower
938     z= 126.96;
939     if(i==3){
940       v9->AddNode(rrin,1,new TGeoCombiTrans(x,y,z,rotr)); //A
941       v9->AddNode(rrin,2,new TGeoCombiTrans(x,y,-z,rotr)); //C     
942     } 
943     else { 
944       gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
945       gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
946     }
947
948     //
949     r=254.25;
950     x=r * TMath::Cos(angle);
951     y=r * TMath::Sin(angle);
952     upar[2]=126.54; //upper
953     z=127.06;
954     //
955     if(i==15){
956       //v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));//A-side only
957      v9->AddNode(hvrv,1,new TGeoTranslation(x,y,127.14));//A-side only
958       gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
959     }
960     else if(i==11){
961       v9->AddNode(rrou,1,new TGeoCombiTrans(x,y,z,rotr)); //A
962       v9->AddNode(rrou,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
963     }
964     else{
965     //
966       gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
967       gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
968     }
969     gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
970     gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
971   }
972
973   TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
974   alice->AddNode(v1,1);
975
976 } // end of function
977
978 //_____________________________________________________________________________
979 void AliTPCv1::DrawDetector() const 
980 {
981   //
982   // Draw a shaded view of the Time Projection Chamber version 1
983   //
984
985   // Set everything unseen
986   gMC->Gsatt("*", "seen", -1);
987   // 
988   // Set ALIC mother transparent
989   gMC->Gsatt("ALIC","SEEN",0);
990   //
991   // Set the volumes visible
992   gMC->Gsatt("TPC ","SEEN",0);
993   gMC->Gsatt("TOIN","SEEN",1);
994   gMC->Gsatt("TOIN","COLO",7);
995   gMC->Gsatt("TOCV","SEEN",1);
996   gMC->Gsatt("TOCV","COLO",4);
997   gMC->Gsatt("TSA1","SEEN",0);
998   gMC->Gsatt("TSA2","SEEN",0);
999   gMC->Gsatt("TSA3","SEEN",0);
1000   gMC->Gsatt("TSA4","SEEN",0);  
1001   gMC->Gsatt("TSA5","SEEN",0);
1002   gMC->Gsatt("TOFC","SEEN",1);
1003   gMC->Gsatt("TOFC","COLO",4);
1004   gMC->Gsatt("TSA6","SEEN",0);
1005   gMC->Gsatt("TSA7","SEEN",0);
1006   gMC->Gsatt("TSA8","SEEN",0);    
1007   gMC->Gsatt("TIIN","SEEN",1);
1008   gMC->Gsatt("TIIN","COLO",7);
1009   gMC->Gsatt("TII1","SEEN",0);
1010   gMC->Gsatt("TIFC","SEEN",1);
1011   gMC->Gsatt("TIFC","COLO",4);
1012   gMC->Gsatt("TSA9","SEEN",0); 
1013   gMC->Gsatt("TS10","SEEN",0);
1014   gMC->Gsatt("TS11","SEEN",0);
1015   gMC->Gsatt("TS12","SEEN",0);
1016   gMC->Gsatt("TS13","SEEN",0);
1017   gMC->Gsatt("TS14","SEEN",0);
1018   gMC->Gsatt("TICC","SEEN",0);
1019   gMC->Gsatt("TICM","SEEN",0);
1020   gMC->Gsatt("TS15","SEEN",0);
1021   gMC->Gsatt("TS16","SEEN",0);
1022   gMC->Gsatt("TS17","SEEN",0);
1023   gMC->Gsatt("TS18","SEEN",0);  
1024   gMC->Gsatt("TS19","SEEN",0); 
1025   gMC->Gsatt("TPJ1","SEEN",0);
1026   gMC->Gsatt("TPJ2","SEEN",0);
1027   gMC->Gsatt("TICS","SEEN",0);
1028   gMC->Gsatt("TDGN","SEEN",0); 
1029   gMC->Gsatt("TIRC","SEEN",0);
1030   gMC->Gsatt("TIC1","SEEN",1);
1031   gMC->Gsatt("TIPP","SEEN",0);
1032   gMC->Gsatt("TIC3","SEEN",0);
1033   gMC->Gsatt("TRCE","SEEN",0);
1034   gMC->Gsatt("TPSC","SEEN",0);
1035   gMC->Gsatt("TPCC","SEEN",0); 
1036   gMC->Gsatt("TORC","SEEN",0);
1037   gMC->Gsatt("TOPP","SEEN",0);
1038   gMC->Gsatt("TOC3","SEEN",0);
1039   gMC->Gsatt("TOC1","SEEN",1);
1040   gMC->Gsatt("TSSW","SEEN",1);
1041   gMC->Gsatt("TSWC","SEEN",1);
1042   gMC->Gsatt("TSSW","COLO",3);
1043   gMC->Gsatt("TSWC","COLO",3);
1044   gMC->Gsatt("TSCE","COLO",6);
1045   gMC->Gsatt("TSCE","SEEN",1);
1046   gMC->Gsatt("TWES","SEEN",0);
1047   gMC->Gsatt("TSWB","SEEN",0);
1048   gMC->Gsatt("TPEL","SEEN",0);
1049   gMC->Gsatt("TPMW","SEEN",1);
1050   gMC->Gsatt("TESR","SEEN",1);
1051   gMC->Gsatt("TPMW","COLO",12);
1052   gMC->Gsatt("TIC1","COLO",5);
1053   gMC->Gsatt("TOC1","COLO",5);
1054   gMC->Gsatt("TESB","SEEN",0);
1055   gMC->Gsatt("THVM","SEEN",1);
1056   gMC->Gsatt("THVM","COLO",11);
1057   gMC->Gsatt("THVH","SEEN",0);
1058   gMC->Gsatt("TPSR","SEEN",0); 
1059   gMC->Gsatt("THVL","SEEN",0);
1060   gMC->Gsatt("THVC","SEEN",0);  
1061   gMC->Gsatt("THVE","SEEN",0);
1062   gMC->Gsatt("THVR","SEEN",0);
1063   gMC->Gsatt("TPSS","SEEN",0);
1064   gMC->Gsatt("TPUS","SEEN",0);
1065   gMC->Gsatt("TPLS","SEEN",0);
1066
1067   //
1068   gMC->Gdopt("hide", "on");
1069   gMC->Gdopt("shad", "on");
1070   gMC->Gsatt("*", "fill", 7);
1071   gMC->SetClipBox(".");
1072   gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1073   gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1074   gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1075   gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1076   gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1077   gMC->DefaultRange();
1078   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1079   gMC->Gdhead(1111, "Time Projection Chamber");
1080   gMC->Gdman(18, 4, "MAN");
1081   gMC->Gdopt("hide","off");
1082 }
1083
1084 //_____________________________________________________________________________
1085 void AliTPCv1::CreateMaterials()
1086 {
1087   //
1088   // Define materials for Time Projection Chamber
1089   //
1090   AliTPC::CreateMaterials();
1091 }
1092
1093 //_____________________________________________________________________________
1094 void AliTPCv1::Init()
1095 {
1096   //
1097   // Initialises TPC detector after it has been created
1098   //
1099
1100   fIdSens=gMC->VolId("TPC_Strip"); // sensitive strip
1101
1102   printf("%s: *** TPC version 1 initialized***\n",ClassName());
1103
1104   // printf("TPC version 1 initialized\n");
1105 }
1106
1107 //_____________________________________________________________________________
1108 void AliTPCv1::StepManager()
1109 {
1110   //
1111   // Called at every step in the Time Projection Chamber
1112   //
1113   Int_t         copy, id, i;
1114   Float_t       hits[5];
1115   Int_t         vol[2];
1116   TLorentzVector p;
1117  //
1118
1119   id = gMC->CurrentVolID(copy);
1120   if(id!=fIdSens) return;
1121   if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
1122
1123     // 
1124     // Only charged tracks entering the sensitive volume
1125     //
1126
1127       gMC->TrackPosition(p);
1128   Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1129   //
1130   
1131   //
1132   Double_t angle = TMath::ACos(p[0]/r);  
1133   angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle;
1134   //
1135   // angular segment, it is not a real sector number...
1136   //
1137   Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/
1138                fTPCParam->GetInnerAngle());
1139   // rotate to segment "0"
1140   Float_t cos,sin;
1141   fTPCParam->AdjustCosSin(sector,cos,sin);
1142   Float_t x1 = p[0]*cos + p[1]*sin;
1143   Float_t y1 = TMath::Abs(-p[0]*sin + p[1]*cos);
1144   // calculate real sector number...
1145   if (x1>fTPCParam->GetOuterRadiusLow()){
1146     sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/
1147              fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector();
1148     if (p[2]<0)         sector+=(fTPCParam->GetNOuterSector()>>1);
1149   }
1150     else   
1151       if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1); 
1152   //
1153   // here I have a sector number
1154   //
1155   vol[0]=sector;
1156   //
1157   Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp();
1158   vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows;
1159   // row numbers are autonomous for lower and upper sectors
1160   if(vol[0] > fTPCParam->GetNInnerSector()) {
1161      vol[1] -= fTPCParam->GetNRowLow();
1162   }
1163   Double_t range = (sector<36) ? fTPCParam->GetYInner(vol[1]) :
1164                    fTPCParam->GetYOuter(vol[1]);
1165   if(y1>range) return;
1166      if(vol[1] == 0){
1167   
1168         // because Jouri wants to have this
1169
1170         gMC->TrackMomentum(p);
1171         hits[0]=p[0];
1172         hits[1]=p[1];
1173         hits[2]=p[2];
1174         hits[3]=0.; // this hit has no energy loss
1175         // Get also the track time for pileup simulation
1176         hits[4]=gMC->TrackTime();
1177
1178         AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); // M.I.
1179      }
1180    gMC->TrackPosition(p);
1181       for(i=0;i<3;++i) hits[i]=p[i];
1182       hits[3]=1; //I'd like to have something positive here (I.Belikov)
1183       // Get also the track time for pileup simulation
1184       hits[4]=gMC->TrackTime();
1185
1186       AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); // M.I.    
1187
1188   }// track entering sensitive strip
1189    
1190 }
1191 //_____________________________________________________________________________
1192
1193
1194