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 /* $Id$ */
  17 //
  18
  19 ///////////////////////////////////////////////////////////////////////////////
  20 //                                                                           //
  21 //  Time Projection Chamber version 0 -- "coarse" TPC                        //
  22 //                                                                           //
  23 //Begin_Html
  24 /*
  25 <img src="picts/AliTPCv0Class.gif">
  26 */
  27 //End_Html
  28 //                                                                           //
  29 //                                                                           //
  30 ///////////////////////////////////////////////////////////////////////////////
  31
  32 #include <Riostream.h>
  33
  34 #include <TGeometry.h>
  35 #include <TMath.h>
  36 #include <TNode.h>
  37 #include <TTUBE.h>
  38 #include <TVirtualMC.h>
  39
  40 #include "AliConst.h"
  41 #include "AliRun.h"
  42 #include "AliTPCDigitsArray.h"
  43 #include "AliTPCParamSR.h"
  44 #include "AliTPCv0.h"
  45 #include "TGeoManager.h"
  46 #include "TGeoVolume.h"
  47 #include "TGeoPcon.h"
  48 #include "TGeoTube.h"
  49 #include "TGeoPgon.h"
  50 #include "TGeoTrd1.h"
  51 #include "TGeoCompositeShape.h"
  52 #include "TGeoPara.h"
  53 ClassImp(AliTPCv0)
  54
  55 //_____________________________________________________________________________
  56 AliTPCv0::AliTPCv0(const char *name, const char *title)
  57          :AliTPC(name, title)
  58 {
  59   //
  60   // Standard creator for TPC version 0
  61   //
  62
  63
  64   if (fTPCParam)
  65      fTPCParam->Write(fTPCParam->GetTitle());
  66 }
  67
  68 //_____________________________________________________________________________
  69 void AliTPCv0::CreateGeometry()
  70 {
  71
  72   //
  73   // Creation of the TPC version 0, i.e. no sensitive volumes,
  74   // only the material distribution
  75   //
  76   //Begin_Html
  77   /*
  78     <img src="picts/AliTPC.gif">
  79   */
  80   //End_Html
  81   //Begin_Html
  82   /*
  83     <img src="picts/AliTPCv0Tree.gif">
  84   */
  85   //End_Html
  86
  87  //----------------------------------------------------------
  88   // This geometry is written using TGeo class
  89   // Firstly the shapes are defined, and only then the volumes
  90   // What is recognized by the MC are volumes
  91   //----------------------------------------------------------
  92   //
  93   //  tpc - this will be the mother volume
  94   //
  95
  96   //
  97   // here I define a volume TPC
  98   // retrive the medium name with "TPC_" as a leading string
  99   //
 100   TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections
 101   tpc->DefineSection(0,-290.,77.,278.);
 102   tpc->DefineSection(1,-259.6,77.,278.);
 103   //
 104   tpc->DefineSection(2,-259.6,68.1,278.);
 105   tpc->DefineSection(3,-253.6,68.1,278.);
 106   //
 107   tpc->DefineSection(4,-253.6,68.,278.);
 108   tpc->DefineSection(5,-74.0,60.8,278.);
 109   //
 110   tpc->DefineSection(6,-74.0,60.1,278.);
 111   tpc->DefineSection(7,-73.3,60.1,278.);
 112   //
 113   tpc->DefineSection(8,-73.3,56.9,278.);
 114   tpc->DefineSection(9,73.3,56.9,278.);
 115   //
 116   tpc->DefineSection(10,73.3,60.1,278.);
 117   tpc->DefineSection(11,74.0,60.1,278.);
 118   //
 119   tpc->DefineSection(12,74.0,60.8,278.);
 120   tpc->DefineSection(13,253.6,65.5,278.);
 121   //
 122   tpc->DefineSection(14,253.6,65.6,278.);
 123   tpc->DefineSection(15,259.6,65.6,278.);
 124   //
 125   tpc->DefineSection(16,259.6,77.0,278.);
 126   tpc->DefineSection(17,290.,77.,278.);
 127   //
 128   TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
 129   TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
 130   //
 131   // drift volume - sensitive volume, extended beyond the
 132   // endcaps, because of the alignment
 133   //
 134   TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
 135   dvol->DefineSection(0,-260.,74.5,264.4);
 136   dvol->DefineSection(1,-253.6,74.5,264.4);
 137   //
 138   dvol->DefineSection(2,-253.6,76.6774,258.);
 139   dvol->DefineSection(3,253.6,76.6774,258.);
 140   //
 141   dvol->DefineSection(4,253.6,74.5,264.4);
 142   dvol->DefineSection(5,260.,74.5,264.4);
 143   //
 144   TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-1");
 145   TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
 146   //
 147   v1->AddNode(v9,1);
 148   //
 149   // outer insulator
 150   //
 151   TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
 152   //
 153   tpco->DefineSection(0,-256.6,264.8,278.);
 154   tpco->DefineSection(1,-253.6,264.8,278.);
 155   //
 156   tpco->DefineSection(2,-253.6,258.,278.);
 157   tpco->DefineSection(3,250.6,258.,278.);
 158   //
 159   tpco->DefineSection(4,250.6,258.,275.5);
 160   tpco->DefineSection(5,253.6,258.,275.5);
 161   //
 162   TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
 163   TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
 164   //
 165   // outer containment vessel
 166   //
 167   TGeoPcon *tocv = new TGeoPcon(0.,360.,6);  // containment vessel
 168   //
 169   tocv->DefineSection(0,-256.6,264.8,278.);
 170   tocv->DefineSection(1,-253.6,264.8,278.);
 171   //
 172   tocv->DefineSection(2,-253.6,274.8124,278.);
 173   tocv->DefineSection(3,247.6,274.8124,278.);
 174   //
 175   tocv->DefineSection(4,247.6,270.4,278.);
 176   tocv->DefineSection(5,250.6,270.4,278.);
 177   //
 178   TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
 179   TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
 180   //
 181   TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
 182   TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
 183   TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
 184   TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
 185   //
 186   TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
 187   TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
 188   TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
 189   TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
 190   //
 191   TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
 192   TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
 193   TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
 194   TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
 195   //-------------------------------------------------------
 196   //  Tpc Outer Field Cage
 197   //  daughters - composite (sandwich)
 198   //-------------------------------------------------------
 199
 200   TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
 201   //
 202   tofc->DefineSection(0,-253.6,258.,269.6);
 203   tofc->DefineSection(1,-250.6,258.,269.6);
 204   //
 205   tofc->DefineSection(2,-250.6,258.,260.0676);
 206   tofc->DefineSection(3,250.6,258.,260.0676);
 207   //
 208   tofc->DefineSection(4,250.6,258.,275.5);
 209   tofc->DefineSection(5,253.6,258.,275.5);
 210   //
 211   TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
 212   //sandwich
 213   TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
 214   TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
 215   TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
 216   //
 217   TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
 218   //
 219   TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
 220   TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
 221   TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
 222   //
 223   // outer part - positioning
 224   //
 225   tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
 226   //
 227   tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
 228   //
 229   v3->AddNode(tov1,1); v4->AddNode(tf1v,1);
 230   //
 231   v2->AddNode(v3,1); v2->AddNode(v4,1);
 232   //
 233   v1->AddNode(v2,1);
 234   //-----------------------------------------------------------
 235   //--------------------------------------------------------------------
 236   // Tpc Inner INsulator (CO2)
 237   // the cones, the central drum and the inner f.c. sandwich with a piece
 238   // of the flane will be placed in the TPC
 239   //--------------------------------------------------------------------
 240   TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
 241   //
 242   tpci->DefineSection(0,-253.6,68.4,76.6774);
 243   tpci->DefineSection(1,-74.0,61.2,76.6774);
 244   //
 245   tpci->DefineSection(2,74.0,61.2,76.6774);
 246   //
 247   tpci->DefineSection(3,253.6,65.9,76.6774);
 248   //
 249   TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
 250   //
 251   // now the inner field cage - only part of flanges (2 copies)
 252   //
 253   TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
 254   TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
 255   //
 256  //---------------------------------------------------------
 257   // Tpc Inner Containment vessel - Muon side
 258   //---------------------------------------------------------
 259   TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
 260   //
 261   tcms->DefineSection(0,-259.1,68.1,74.2);
 262   tcms->DefineSection(1,-253.6,68.1,74.2);
 263   //
 264   tcms->DefineSection(2,-253.6,68.1,68.4);
 265   tcms->DefineSection(3,-74.0,60.9,61.2);
 266   //
 267   tcms->DefineSection(4,-74.0,60.1,61.2);
 268   tcms->DefineSection(5,-73.3,60.1,61.2);
 269   //
 270   tcms->DefineSection(6,-73.3,56.9,61.2);
 271   tcms->DefineSection(7,-73.0,56.9,61.2);
 272   //
 273   tcms->DefineSection(8,-73.0,56.9,58.8);
 274   tcms->DefineSection(9,-71.3,56.9,58.8);
 275   //
 276   TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
 277   //-----------------------------------------------
 278   // inner containment vessel - shaft side
 279   //-----------------------------------------------
 280   TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
 281   //
 282   tcss->DefineSection(0,71.3,56.9,58.8);
 283   tcss->DefineSection(1,73.0,56.9,58.8);
 284   //
 285   tcss->DefineSection(2,73.0,56.9,61.2);
 286   tcss->DefineSection(3,73.3,56.9,61.2);
 287   //
 288   tcss->DefineSection(4,73.3,60.1,61.2);
 289   tcss->DefineSection(5,74.0,60.1,61.2);
 290   //
 291   tcss->DefineSection(6,74.0,60.9,61.2);
 292   tcss->DefineSection(7,253.6,65.6,65.9);
 293   //
 294   tcss->DefineSection(8,253.6,65.6,74.2);
 295   tcss->DefineSection(9,258.1,65.6,74.2);
 296   //
 297   TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
 298   //-----------------------------------------------
 299   //  Inner field cage
 300   //  define 4 parts and make an assembly
 301   //-----------------------------------------------
 302   // part1 - Al - 2 copies
 303   TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
 304   TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
 305   // sandwich - outermost parts - 2 copies
 306   TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
 307   TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
 308   TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
 309   TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
 310   //
 311   TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
 312   TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
 313   TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
 314   TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
 315   //
 316   // middle parts - 2 copies
 317   TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
 318   TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
 319   TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
 320   TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
 321   //
 322   TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
 323   TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
 324   TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
 325   TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
 326   // central part - 1 copy
 327   TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
 328   TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
 329   TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
 330   //
 331   TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
 332   TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
 333   TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
 334   //
 335   // inner part - positioning
 336   //
 337   // creating a sandwich
 338   tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
 339   //
 340   tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
 341   //
 342   tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
 343   //
 344   TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
 345   //
 346   tv100->AddNode(tv10,1);
 347   tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
 348   tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
 349   tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
 350   tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
 351   tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
 352   tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
 353   //
 354   v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
 355   v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
 356   v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
 357   v9->AddNode(tv100,1);
 358   //
 359   // central drum
 360   //
 361   // flange + sandwich
 362   //
 363   TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
 364   cfl->DefineSection(0,-71.1,59.7,61.2);
 365   cfl->DefineSection(1,-68.6,59.7,61.2);
 366   //
 367   cfl->DefineSection(2,-68.6,60.6324,61.2);
 368   cfl->DefineSection(3,68.6,60.6324,61.2);
 369   //
 370   cfl->DefineSection(4,68.6,59.7,61.2);
 371   cfl->DefineSection(5,71.1,59.7,61.2);
 372   //
 373   TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
 374   // sandwich
 375   TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
 376   TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
 377   TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
 378   //
 379   TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
 380   TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
 381   TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
 382   TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
 383   //
 384   // seals for central drum 2 copies
 385   //
 386   TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
 387   TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
 388   TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
 389   v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.));
 390   v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.));
 391   //
 392   // seal collars
 393   TGeoPcon *se = new TGeoPcon(0.,360.,6);
 394   se->DefineSection(0,-72.8,59.7,61.2);
 395   se->DefineSection(1,-72.3,59.7,61.2);
 396   //
 397   se->DefineSection(2,-72.3,58.85,61.2);
 398   se->DefineSection(3,-71.6,58.85,61.2);
 399   //
 400   se->DefineSection(4,-71.6,59.7,61.2);
 401   se->DefineSection(5,-71.3,59.7,61.2);
 402   //
 403   TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
 404   //
 405   TGeoTube *si = new TGeoTube(56.9,58.8,1.);
 406   TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
 407   //
 408   // define reflection matrix
 409   //
 410   TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,270.,180.,0.);
 411   //
 412   cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
 413   //
 414   v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-72.1));
 415   v1->AddNode(siv,2,new TGeoTranslation(0.,0.,72.1));
 416   v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
 417   //
 418   // central membrane - 2 rings and a mylar membrane - assembly
 419   //
 420   TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
 421   TGeoTube *oh = new TGeoTube(250.,256.,.5);
 422   TGeoTube *mem = new TGeoTube(84.05,250,0.01);
 423   TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
 424   TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
 425   TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
 426   //
 427   TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
 428   cm->AddNode(ihv,1);
 429   cm->AddNode(ohv,1);
 430   cm->AddNode(memv,1);
 431   v9->AddNode(cm,1);
 432   //
 433   // end caps - they are make as an assembly of single segments
 434   // containing both readout chambers
 435   //
 436   Double_t OpeningAngle = 10.*TMath::DegToRad();
 437   Double_t thick=1.5; // rib
 438   Double_t shift = thick/TMath::Sin(OpeningAngle);
 439   //
 440   Double_t LowEdge = 86.3; // hole in the wheel
 441   Double_t UpEdge = 240.4; // hole in the wheel
 442   //
 443   new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
 444   //
 445   TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
 446   //
 447   hole->DefineSection(0,-3.5,LowEdge-shift,UpEdge-shift);
 448   hole->DefineSection(1,-1.5,LowEdge-shift,UpEdge-shift);
 449   //
 450   hole->DefineSection(2,-1.5,LowEdge-shift,UpEdge+3.-shift);
 451   hole->DefineSection(3,3.5,LowEdge-shift,UpEdge+3.-shift);
 452   //
 453   Double_t ys = shift*TMath::Sin(OpeningAngle);
 454   Double_t xs = shift*TMath::Cos(OpeningAngle);
 455   TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
 456   tr->RegisterYourself();
 457   TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
 458   TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
 459   TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
 460   bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
 461   bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
 462   TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
 463   TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
 464   //
 465   ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
 466   //
 467   // readout chambers
 468   //
 469   // IROC first
 470   //
 471    TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
 472    TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
 473   // empty space
 474    TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
 475    TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
 476    ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
 477    //bars
 478    Double_t tga = (19.8328-12.3742)/39.3;
 479    Double_t xmin,xmax;
 480    xmin = 9.55*tga+12.3742;
 481    xmax = 9.95*tga+12.3742;
 482    TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
 483    TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
 484    empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
 485    xmin=19.4*tga+12.3742;
 486    xmax=19.9*tga+12.3742;
 487    TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
 488    TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
 489    empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
 490    xmin=29.35*tga+12.3742;
 491    xmax=29.75*tga+12.3742;
 492    TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
 493    TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
 494    empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
 495    //
 496    // holes for connectors
 497    //
 498    TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
 499    TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
 500    ifstream in;
 501    in.open("conn_iroc.dat", ios_base::in); // asci file
 502    for(Int_t i =0;i<86;i++){
 503       Double_t y = 3.9;
 504       Double_t x,z,ang;
 505       in>>x>>z>>ang;
 506       TGeoRotation *rrr = new TGeoRotation();
 507       rrr->RotateY(ang);
 508       TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
 509       ibdv->AddNode(connv,i+1,trans);
 510    }
 511    in.close();
 512    // "cap"
 513    new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
 514    // "hole"
 515    new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
 516    TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
 517    tr1->RegisterYourself();
 518    TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
 519    TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
 520    //
 521    // pad plane and wire fixations
 522    //
 523    TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
 524    TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
 525    TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
 526    TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
 527    TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
 528    TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
 529    TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
 530    //
 531    TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
 532    //
 533    iroc->AddNode(ibdv,1);
 534    iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
 535    iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
 536    tga =(23.3521-14.5974)/49.65;
 537    Double_t xx = 24.825*tga+14.5974-0.6;
 538    iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
 539    iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
 540    //
 541    // OROC
 542    //
 543    TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
 544    TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
 545    TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
 546    TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
 547    obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
 548    //horizontal bars
 549    tga=(38.5084-20.2938)/99.3;
 550    xmin=tga*10.2+20.2938;
 551    xmax=tga*10.6+20.2938;
 552    TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 553    TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
 554    //
 555    xmin=22.55*tga+20.2938;
 556    xmax=24.15*tga+20.2938;
 557    TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
 558    TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
 559    //
 560    xmin=36.1*tga+20.2938;
 561    xmax=36.5*tga+20.2938;
 562    TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 563    TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
 564    //
 565    xmin=49.0*tga+20.2938;
 566    xmax=50.6*tga+20.2938;
 567    TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
 568    TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
 569    //
 570    xmin=63.6*tga+20.2938;
 571    xmax=64.0*tga+20.2938;
 572    TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 573    TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
 574    //
 575    xmin=75.5*tga+20.2938;
 576    xmax=77.15*tga+20.2938;
 577    TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
 578    TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
 579    //
 580    xmin=88.7*tga+20.2938;
 581    xmax=89.1*tga+20.2938;
 582    TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 583    TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
 584    //
 585    oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
 586    oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
 587    oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
 588    oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
 589    oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
 590    oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
 591    oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
 592    // vertical bars
 593    TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
 594    TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
 595    TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
 596    TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
 597    TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
 598    //
 599    TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
 600    TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
 601    TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
 602    TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
 603    TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
 604    //
 605    oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
 606    oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
 607    oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
 608    oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
 609    oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
 610    oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
 611    oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
 612    oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
 613    //
 614    // holes for connectors
 615    //
 616    in.open("conn_oroc.dat", ios_base::in); // asci file
 617    for(Int_t i =0;i<78;i++){
 618       Double_t y =3.89;
 619       Double_t x,z,ang;
 620       Double_t x1,z1,x2,z2;
 621       in>>x>>z>>ang;
 622       Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
 623       Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
 624       //
 625       x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
 626       //
 627       TGeoRotation *rr = new TGeoRotation();
 628       rr->RotateY(ang);
 629       z1-=54.95;
 630       z2-=54.95;
 631       TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
 632       TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
 633       obdv->AddNode(connv,i+1,trans1);
 634       obdv->AddNode(connv,i+79,trans2);
 635    }
 636    in.close();
 637    // cap
 638    new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
 639    new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
 640    TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
 641    tr5->RegisterYourself();
 642    TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
 643    TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
 644    //
 645    // pad plane and wire fixations
 646    //
 647    TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
 648    TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
 649    //
 650    tga=(43.5239-23.3874)/114.2;
 651    TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
 652    TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
 653    xx = 57.1*tga+23.3874-0.7;
 654    TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
 655    TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
 656    //
 657    TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
 658    //
 659    oroc->AddNode(obdv,1);
 660    oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
 661    oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
 662    oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
 663    oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
 664    //
 665    // now iroc and oroc are placed into a sector...
 666    //
 667    TGeoVolumeAssembly *sect = new TGeoVolumeAssembly("TPC_SECT");
 668    TGeoRotation rot1("rot1",90.,90.,0.);
 669    TGeoRotation rot2("rot2");
 670    rot2.RotateY(10.);
 671    TGeoRotation *rot = new TGeoRotation("rot");
 672    *rot=rot1*rot2;
 673    //
 674    Double_t x0,y0;
 675    x0=110.2*TMath::Cos(OpeningAngle);
 676    y0=110.2*TMath::Sin(OpeningAngle);
 677    TGeoCombiTrans *combi1 = new TGeoCombiTrans("combi1",x0,y0,1.09,rot);
 678    x0=188.45*TMath::Cos(OpeningAngle);
 679    y0=188.45*TMath::Sin(OpeningAngle);
 680    TGeoCombiTrans *combi2 = new TGeoCombiTrans("combi2",x0,y0,0.99,rot);
 681    //
 682    sect->AddNode(ch,1);
 683    sect->AddNode(iroc,1,combi1);
 684    sect->AddNode(oroc,1,combi2);
 685    //
 686    // segment is ready...
 687    // now I try to make a wheel...
 688    //
 689    TGeoVolumeAssembly *wheel = new TGeoVolumeAssembly("TPC_ENDCAP");
 690    //
 691    for(Int_t i =0;i<18;i++){
 692      Double_t phi = (20.*i);
 693      TGeoRotation *r = new TGeoRotation();
 694      r->RotateZ(phi);
 695      wheel->AddNode(sect,i+1,r);
 696
 697    }
 698    // wheels in the drift volume!
 699    v9->AddNode(wheel,1,new TGeoTranslation(0.,0.,-256.6));
 700    TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
 701    v9->AddNode(wheel,2,combi3);
 702    //_____________________________________________________________
 703    // service support wheel
 704    //_____________________________________________________________
 705   TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
 706   sw->DefineSection(0,-4.,80.5,251.75);
 707   sw->DefineSection(1,4.,80.5,251.75);
 708   TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
 709   //
 710   thick=1.;
 711   shift = thick/TMath::Sin(OpeningAngle);
 712   TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
 713   sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
 714   sh->DefineSection(1,4.,81.5-shift,250.75-shift);
 715   TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
 716   //
 717   ys = shift*TMath::Sin(OpeningAngle);
 718   xs = shift*TMath::Cos(OpeningAngle);
 719   swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
 720   // cover
 721   TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
 722   co->DefineSection(0,-0.5,77.,255.25);
 723   co->DefineSection(1,0.5,77.,255.25);
 724   TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
 725   // hole in a cover
 726   TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
 727   shift=4./TMath::Sin(OpeningAngle);
 728   coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
 729   coh->DefineSection(1,0.5,85.-shift,247.25-shift);
 730   //
 731   TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
 732   //
 733   ys = shift*TMath::Sin(OpeningAngle);
 734   xs = shift*TMath::Cos(OpeningAngle);
 735   cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
 736   //
 737   // Sector as an Assembly
 738   //
 739   TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
 740   swhs->AddNode(swv,1);
 741   swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
 742   swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
 743   //
 744   // SSW as an Assembly of sectors
 745   //
 746  TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
 747    for(Int_t i =0;i<18;i++){
 748      Double_t phi = (20.*i);
 749      TGeoRotation *r = new TGeoRotation();
 750      r->RotateZ(phi);
 751      swheel->AddNode(swhs,i+1,r);
 752    }
 753    v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
 754    v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
 755    //
 756   //----------------------------------------------------------
 757   // TPc Support Rods - MAKROLON
 758   //----------------------------------------------------------
 759   TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
 760   TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
 761   // upper and lower rods differ in length!
 762   Double_t *upar;
 763   upar=NULL;
 764   gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
 765   upar=new Double_t [3];
 766   upar[0]=1.8;
 767   upar[1]=2.2;
 768
 769   //
 770   //HV rods - makrolon + 0.58cm (diameter) Cu
 771   TGeoTube *hvr = new TGeoTube(0.,4.4,126.64);
 772   TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
 773   //
 774   TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
 775   TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
 776   hvrv->AddNode(hvcv,1);
 777   for(Int_t i=0;i<17;i++){
 778     Double_t angle,x,y;
 779     Double_t z,r;
 780     angle=TMath::DegToRad()*20.*(Double_t)i;
 781     r=81.5;
 782     x=r * TMath::Cos(angle);
 783     y=r * TMath::Sin(angle);
 784     upar[2]=126.64; //lower
 785     z= 126.96;
 786     if(i==15){
 787       v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));
 788       v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z));
 789     }
 790     else{
 791      gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
 792      gGeoManager->Node("TPC_Rod",i+18,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
 793     }
 794     r=254.25;
 795     x=r * TMath::Cos(angle);
 796     y=r * TMath::Sin(angle);
 797     upar[2]=126.54; //upper
 798     z=127.06;
 799     gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
 800     gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
 801   }
 802
 803
 804   gMC->Gspos("TPC_M",1,"ALIC",0.,0.,0.,0,"ONLY");
 805
 806 } // end of function
 807
 808
 809 //_____________________________________________________________________________
 810 void AliTPCv0::CreateMaterials()
 811 {
 812   //
 813   // Define materials for the TPC
 814   //
 815   AliTPC::CreateMaterials();
 816 }
 817
 818 //_____________________________________________________________________________
 819 void AliTPCv0::DrawDetector()
 820 {
 821   //
 822   // Draw a shaded view of the Time Projection Chamber version 0
 823   //
 824
 825   // Set everything unseen
 826   gMC->Gsatt("*", "seen", -1);
 827   //
 828   // Set ALIC mother transparent
 829   gMC->Gsatt("ALIC","SEEN",0);
 830   //
 831   // Set the volumes visible
 832   gMC->Gsatt("TPC ","SEEN",0);
 833   gMC->Gsatt("TOIN","SEEN",1);
 834   gMC->Gsatt("TOIN","COLO",7);
 835   gMC->Gsatt("TOCV","SEEN",1);
 836   gMC->Gsatt("TOCV","COLO",4);
 837   gMC->Gsatt("TSA1","SEEN",0);
 838   gMC->Gsatt("TSA2","SEEN",0);
 839   gMC->Gsatt("TSA3","SEEN",0);
 840   gMC->Gsatt("TSA4","SEEN",0);
 841   gMC->Gsatt("TSA5","SEEN",0);
 842   gMC->Gsatt("TOFC","SEEN",1);
 843   gMC->Gsatt("TOFC","COLO",4);
 844   gMC->Gsatt("TSA6","SEEN",0);
 845   gMC->Gsatt("TSA7","SEEN",0);
 846   gMC->Gsatt("TSA8","SEEN",0);
 847   gMC->Gsatt("TIIN","SEEN",1);
 848   gMC->Gsatt("TIIN","COLO",7);
 849   gMC->Gsatt("TII1","SEEN",0);
 850   gMC->Gsatt("TIFC","SEEN",1);
 851   gMC->Gsatt("TIFC","COLO",4);
 852   gMC->Gsatt("TSA9","SEEN",0);
 853   gMC->Gsatt("TS10","SEEN",0);
 854   gMC->Gsatt("TS11","SEEN",0);
 855   gMC->Gsatt("TS12","SEEN",0);
 856   gMC->Gsatt("TS13","SEEN",0);
 857   gMC->Gsatt("TS14","SEEN",0);
 858   gMC->Gsatt("TICC","SEEN",0);
 859   gMC->Gsatt("TICM","SEEN",0);
 860   gMC->Gsatt("TS15","SEEN",0);
 861   gMC->Gsatt("TS16","SEEN",0);
 862   gMC->Gsatt("TS17","SEEN",0);
 863   gMC->Gsatt("TS18","SEEN",0);
 864   gMC->Gsatt("TS19","SEEN",0);
 865   gMC->Gsatt("TPJ1","SEEN",0);
 866   gMC->Gsatt("TPJ2","SEEN",0);
 867   gMC->Gsatt("TICS","SEEN",0);
 868   gMC->Gsatt("TDGN","SEEN",0);
 869   gMC->Gsatt("TIRC","SEEN",0);
 870   gMC->Gsatt("TIC1","SEEN",1);
 871   gMC->Gsatt("TIPP","SEEN",0);
 872   gMC->Gsatt("TIC3","SEEN",0);
 873   gMC->Gsatt("TRCE","SEEN",0);
 874   gMC->Gsatt("TPSC","SEEN",0);
 875   gMC->Gsatt("TPCC","SEEN",0);
 876   gMC->Gsatt("TORC","SEEN",0);
 877   gMC->Gsatt("TOPP","SEEN",0);
 878   gMC->Gsatt("TOC3","SEEN",0);
 879   gMC->Gsatt("TOC1","SEEN",1);
 880   gMC->Gsatt("TSSW","SEEN",1);
 881   gMC->Gsatt("TSWC","SEEN",1);
 882   gMC->Gsatt("TSSW","COLO",3);
 883   gMC->Gsatt("TSWC","COLO",3);
 884   gMC->Gsatt("TSCE","COLO",6);
 885   gMC->Gsatt("TSCE","SEEN",1);
 886   gMC->Gsatt("TWES","SEEN",0);
 887   gMC->Gsatt("TSWB","SEEN",0);
 888   gMC->Gsatt("TPEL","SEEN",0);
 889   gMC->Gsatt("TPMW","SEEN",1);
 890   gMC->Gsatt("TESR","SEEN",1);
 891   gMC->Gsatt("TPMW","COLO",12);
 892   gMC->Gsatt("TIC1","COLO",5);
 893   gMC->Gsatt("TOC1","COLO",5);
 894   gMC->Gsatt("TESB","SEEN",0);
 895   gMC->Gsatt("THVM","SEEN",1);
 896   gMC->Gsatt("THVM","COLO",11);
 897   gMC->Gsatt("THVH","SEEN",0);
 898   gMC->Gsatt("TPSR","SEEN",0);
 899   gMC->Gsatt("THVL","SEEN",0);
 900   gMC->Gsatt("THVC","SEEN",0);
 901   gMC->Gsatt("THVE","SEEN",0);
 902   gMC->Gsatt("THVR","SEEN",0);
 903
 904   //
 905   gMC->Gdopt("hide", "on");
 906   gMC->Gdopt("shad", "on");
 907   gMC->Gsatt("*", "fill", 7);
 908   gMC->SetClipBox(".");
 909   gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
 910   gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
 911   gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
 912   gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
 913   gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
 914   gMC->DefaultRange();
 915   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
 916   gMC->Gdhead(1111, "Time Projection Chamber");
 917   gMC->Gdman(18, 4, "MAN");
 918   gMC->Gdopt("hide","off");
 919 }
 920
 921 //_____________________________________________________________________________
 922 void AliTPCv0::Init()
 923 {
 924   //
 925   // Initialise Time Projection Chamber version 0
 926   //
 927
 928   printf("%s: *** TPC version 0 initialized***\n",ClassName());
 929
 930   //  printf("TPC version 0 initialized\n");
 931 }
 932
 933 //_____________________________________________________________________________
 934 void AliTPCv0::StepManager()
 935 {
 936   //
 937   // Procedure called at each step in the TPC
 938   //
 939 }