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 #include <TString.h>
  40 #include <TSystem.h>
  41
  42 #include "AliConst.h"
  43 #include "AliRun.h"
  44 #include "AliTPCDigitsArray.h"
  45 #include "AliTPCParamSR.h"
  46 #include "AliTPCv0.h"
  47 #include "TGeoManager.h"
  48 #include "TGeoVolume.h"
  49 #include "TGeoPcon.h"
  50 #include "TGeoTube.h"
  51 #include "TGeoPgon.h"
  52 #include "TGeoTrd1.h"
  53 #include "TGeoCompositeShape.h"
  54 #include "TGeoPara.h"
  55 ClassImp(AliTPCv0)
  56
  57 //_____________________________________________________________________________
  58 AliTPCv0::AliTPCv0(const char *name, const char *title)
  59          :AliTPC(name, title)
  60 {
  61   //
  62   // Standard creator for TPC version 0
  63   //
  64
  65
  66   if (fTPCParam)
  67      fTPCParam->Write(fTPCParam->GetTitle());
  68 }
  69
  70 //_____________________________________________________________________________
  71 void AliTPCv0::CreateGeometry()
  72 {
  73
  74   //
  75   // Creation of the TPC version 0, i.e. no sensitive volumes,
  76   // only the material distribution
  77   //
  78   //Begin_Html
  79   /*
  80     <img src="picts/AliTPC.gif">
  81   */
  82   //End_Html
  83   //Begin_Html
  84   /*
  85     <img src="picts/AliTPCv0Tree.gif">
  86   */
  87   //End_Html
  88
  89  //----------------------------------------------------------
  90   // This geometry is written using TGeo class
  91   // Firstly the shapes are defined, and only then the volumes
  92   // What is recognized by the MC are volumes
  93   //----------------------------------------------------------
  94   //
  95   //  tpc - this will be the mother volume
  96   //
  97
  98   //
  99   // here I define a volume TPC
 100   // retrive the medium name with "TPC_" as a leading string
 101   //
 102   TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections
 103   tpc->DefineSection(0,-290.,77.,278.);
 104   tpc->DefineSection(1,-259.6,70.,278.);
 105   //
 106   tpc->DefineSection(2,-259.6,68.1,278.);
 107   tpc->DefineSection(3,-253.6,68.1,278.);
 108   //
 109   tpc->DefineSection(4,-253.6,68.,278.);
 110   tpc->DefineSection(5,-74.0,60.8,278.);
 111   //
 112   tpc->DefineSection(6,-74.0,60.1,278.);
 113   tpc->DefineSection(7,-73.3,60.1,278.);
 114   //
 115   tpc->DefineSection(8,-73.3,56.9,278.);
 116   tpc->DefineSection(9,73.3,56.9,278.);
 117   //
 118   tpc->DefineSection(10,73.3,60.1,278.);
 119   tpc->DefineSection(11,74.0,60.1,278.);
 120   //
 121   tpc->DefineSection(12,74.0,60.8,278.);
 122   tpc->DefineSection(13,253.6,65.5,278.);
 123   //
 124   tpc->DefineSection(14,253.6,65.6,278.);
 125   tpc->DefineSection(15,259.6,65.6,278.);
 126   //
 127   tpc->DefineSection(16,259.6,70.0,278.);
 128   tpc->DefineSection(17,290.,77.,278.);
 129   //
 130   TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
 131   TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
 132   //
 133   // drift volume - sensitive volume, extended beyond the
 134   // endcaps, because of the alignment
 135   //
 136   TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
 137   dvol->DefineSection(0,-260.,74.5,264.4);
 138   dvol->DefineSection(1,-253.6,74.5,264.4);
 139   //
 140   dvol->DefineSection(2,-253.6,76.6774,258.);
 141   dvol->DefineSection(3,253.6,76.6774,258.);
 142   //
 143   dvol->DefineSection(4,253.6,74.5,264.4);
 144   dvol->DefineSection(5,260.,74.5,264.4);
 145   //
 146   TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-1");
 147   TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
 148   //
 149   v1->AddNode(v9,1);
 150   //
 151   // outer insulator
 152   //
 153   TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
 154   //
 155   tpco->DefineSection(0,-256.6,264.8,278.);
 156   tpco->DefineSection(1,-253.6,264.8,278.);
 157   //
 158   tpco->DefineSection(2,-253.6,258.,278.);
 159   tpco->DefineSection(3,250.6,258.,278.);
 160   //
 161   tpco->DefineSection(4,250.6,258.,275.5);
 162   tpco->DefineSection(5,253.6,258.,275.5);
 163   //
 164   TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
 165   TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
 166   //
 167   // outer containment vessel
 168   //
 169   TGeoPcon *tocv = new TGeoPcon(0.,360.,6);  // containment vessel
 170   //
 171   tocv->DefineSection(0,-256.6,264.8,278.);
 172   tocv->DefineSection(1,-253.6,264.8,278.);
 173   //
 174   tocv->DefineSection(2,-253.6,274.8124,278.);
 175   tocv->DefineSection(3,247.6,274.8124,278.);
 176   //
 177   tocv->DefineSection(4,247.6,270.4,278.);
 178   tocv->DefineSection(5,250.6,270.4,278.);
 179   //
 180   TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
 181   TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
 182   //
 183   TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
 184   TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
 185   TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
 186   TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
 187   //
 188   TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
 189   TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
 190   TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
 191   TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
 192   //
 193   TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
 194   TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
 195   TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
 196   TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
 197   //-------------------------------------------------------
 198   //  Tpc Outer Field Cage
 199   //  daughters - composite (sandwich)
 200   //-------------------------------------------------------
 201
 202   TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
 203   //
 204   tofc->DefineSection(0,-253.6,258.,269.6);
 205   tofc->DefineSection(1,-250.6,258.,269.6);
 206   //
 207   tofc->DefineSection(2,-250.6,258.,260.0676);
 208   tofc->DefineSection(3,250.6,258.,260.0676);
 209   //
 210   tofc->DefineSection(4,250.6,258.,275.5);
 211   tofc->DefineSection(5,253.6,258.,275.5);
 212   //
 213   TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
 214   //sandwich
 215   TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
 216   TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
 217   TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
 218   //
 219   TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
 220   //
 221   TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
 222   TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
 223   TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
 224   //
 225   // outer part - positioning
 226   //
 227   tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
 228   //
 229   tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
 230   //
 231   v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
 232   //
 233   v2->AddNode(v3,1); v2->AddNode(v4,1);
 234   //
 235   v1->AddNode(v2,1);
 236   //-----------------------------------------------------------
 237   //--------------------------------------------------------------------
 238   // Tpc Inner INsulator (CO2)
 239   // the cones, the central drum and the inner f.c. sandwich with a piece
 240   // of the flane will be placed in the TPC
 241   //--------------------------------------------------------------------
 242   TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
 243   //
 244   tpci->DefineSection(0,-253.6,68.4,76.6774);
 245   tpci->DefineSection(1,-74.0,61.2,76.6774);
 246   //
 247   tpci->DefineSection(2,74.0,61.2,76.6774);
 248   //
 249   tpci->DefineSection(3,253.6,65.9,76.6774);
 250   //
 251   TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
 252   //
 253   // now the inner field cage - only part of flanges (2 copies)
 254   //
 255   TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
 256   TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
 257   //
 258  //---------------------------------------------------------
 259   // Tpc Inner Containment vessel - Muon side
 260   //---------------------------------------------------------
 261   TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
 262   //
 263   tcms->DefineSection(0,-259.1,68.1,74.2);
 264   tcms->DefineSection(1,-253.6,68.1,74.2);
 265   //
 266   tcms->DefineSection(2,-253.6,68.1,68.4);
 267   tcms->DefineSection(3,-74.0,60.9,61.2);
 268   //
 269   tcms->DefineSection(4,-74.0,60.1,61.2);
 270   tcms->DefineSection(5,-73.3,60.1,61.2);
 271   //
 272   tcms->DefineSection(6,-73.3,56.9,61.2);
 273   tcms->DefineSection(7,-73.0,56.9,61.2);
 274   //
 275   tcms->DefineSection(8,-73.0,56.9,58.8);
 276   tcms->DefineSection(9,-71.3,56.9,58.8);
 277   //
 278   TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
 279   //-----------------------------------------------
 280   // inner containment vessel - shaft side
 281   //-----------------------------------------------
 282   TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
 283   //
 284   tcss->DefineSection(0,71.3,56.9,58.8);
 285   tcss->DefineSection(1,73.0,56.9,58.8);
 286   //
 287   tcss->DefineSection(2,73.0,56.9,61.2);
 288   tcss->DefineSection(3,73.3,56.9,61.2);
 289   //
 290   tcss->DefineSection(4,73.3,60.1,61.2);
 291   tcss->DefineSection(5,74.0,60.1,61.2);
 292   //
 293   tcss->DefineSection(6,74.0,60.9,61.2);
 294   tcss->DefineSection(7,253.6,65.6,65.9);
 295   //
 296   tcss->DefineSection(8,253.6,65.6,74.2);
 297   tcss->DefineSection(9,258.1,65.6,74.2);
 298   //
 299   TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
 300   //-----------------------------------------------
 301   //  Inner field cage
 302   //  define 4 parts and make an assembly
 303   //-----------------------------------------------
 304   // part1 - Al - 2 copies
 305   TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
 306   TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
 307   // sandwich - outermost parts - 2 copies
 308   TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
 309   TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
 310   TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
 311   TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
 312   //
 313   TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
 314   TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
 315   TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
 316   TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
 317   //
 318   // middle parts - 2 copies
 319   TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
 320   TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
 321   TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
 322   TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
 323   //
 324   TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
 325   TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
 326   TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
 327   TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
 328   // central part - 1 copy
 329   TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
 330   TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
 331   TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
 332   //
 333   TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
 334   TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
 335   TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
 336   //
 337   // inner part - positioning
 338   //
 339   // creating a sandwich
 340   tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
 341   //
 342   tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
 343   //
 344   tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
 345   //
 346   TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
 347   //
 348   tv100->AddNode(tv10,1);
 349   tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
 350   tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
 351   tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
 352   tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
 353   tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
 354   tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
 355   //
 356   v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
 357   v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
 358   v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
 359   v9->AddNode(tv100,1);
 360   //
 361   // central drum
 362   //
 363   // flange + sandwich
 364   //
 365   TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
 366   cfl->DefineSection(0,-71.1,59.7,61.2);
 367   cfl->DefineSection(1,-68.6,59.7,61.2);
 368   //
 369   cfl->DefineSection(2,-68.6,60.6324,61.2);
 370   cfl->DefineSection(3,68.6,60.6324,61.2);
 371   //
 372   cfl->DefineSection(4,68.6,59.7,61.2);
 373   cfl->DefineSection(5,71.1,59.7,61.2);
 374   //
 375   TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
 376   // sandwich
 377   TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
 378   TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
 379   TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
 380   //
 381   TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
 382   TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
 383   TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
 384   TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
 385   //
 386   // seals for central drum 2 copies
 387   //
 388   TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
 389   TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
 390   TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
 391   v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.));
 392   v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.));
 393   //
 394   // seal collars
 395   TGeoPcon *se = new TGeoPcon(0.,360.,6);
 396   se->DefineSection(0,-72.8,59.7,61.2);
 397   se->DefineSection(1,-72.3,59.7,61.2);
 398   //
 399   se->DefineSection(2,-72.3,58.85,61.2);
 400   se->DefineSection(3,-71.6,58.85,61.2);
 401   //
 402   se->DefineSection(4,-71.6,59.7,61.2);
 403   se->DefineSection(5,-71.3,59.7,61.2);
 404   //
 405   TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
 406   //
 407   TGeoTube *si = new TGeoTube(56.9,58.8,1.);
 408   TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
 409   //
 410   // define reflection matrix
 411   //
 412   TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
 413   //
 414   cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
 415   //
 416   v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
 417   v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
 418   v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
 419   //
 420   // central membrane - 2 rings and a mylar membrane - assembly
 421   //
 422   TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
 423   TGeoTube *oh = new TGeoTube(250.,256.,.5);
 424   TGeoTube *mem = new TGeoTube(84.05,250,0.01);
 425   TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
 426   TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
 427   TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
 428   //
 429   TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
 430   cm->AddNode(ihv,1);
 431   cm->AddNode(ohv,1);
 432   cm->AddNode(memv,1);
 433   v9->AddNode(cm,1);
 434   //
 435   // end caps - they are make as an assembly of single segments
 436   // containing both readout chambers
 437   //
 438   Double_t openingAngle = 10.*TMath::DegToRad();
 439   Double_t thick=1.5; // rib
 440   Double_t shift = thick/TMath::Sin(openingAngle);
 441   //
 442   Double_t lowEdge = 86.3; // hole in the wheel
 443   Double_t upEdge = 240.4; // hole in the wheel
 444   //
 445   new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
 446   //
 447   TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
 448   //
 449   hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
 450   hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
 451   //
 452   hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
 453   hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
 454   //
 455   Double_t ys = shift*TMath::Sin(openingAngle);
 456   Double_t xs = shift*TMath::Cos(openingAngle);
 457   TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
 458   tr->RegisterYourself();
 459   TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
 460   TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
 461   TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
 462   bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
 463   bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
 464   TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
 465   TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
 466   //
 467   ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
 468   //
 469   // readout chambers
 470   //
 471   // IROC first
 472   //
 473    TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
 474    TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
 475   // empty space
 476    TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
 477    TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
 478    ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
 479    //bars
 480    Double_t tga = (19.8328-12.3742)/39.3;
 481    Double_t xmin,xmax;
 482    xmin = 9.55*tga+12.3742;
 483    xmax = 9.95*tga+12.3742;
 484    TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
 485    TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
 486    empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
 487    xmin=19.4*tga+12.3742;
 488    xmax=19.9*tga+12.3742;
 489    TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
 490    TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
 491    empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
 492    xmin=29.35*tga+12.3742;
 493    xmax=29.75*tga+12.3742;
 494    TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
 495    TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
 496    empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
 497    //
 498    // holes for connectors
 499    //
 500    TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
 501    TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
 502    TString fileName(gSystem->Getenv("ALICE_ROOT"));
 503    fileName += "/TPC/conn_iroc.dat";
 504    ifstream in;
 505    in.open(fileName.Data(), ios_base::in); // asci file
 506    for(Int_t i =0;i<86;i++){
 507       Double_t y = 3.99;
 508       Double_t x,z,ang;
 509       in>>x>>z>>ang;
 510       z-=26.5;
 511       TGeoRotation *rrr = new TGeoRotation();
 512       rrr->RotateY(ang);
 513       TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
 514       ibdv->AddNode(connv,i+1,trans);
 515    }
 516    in.close();
 517    // "cap"
 518    new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
 519    // "hole"
 520    new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
 521    TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
 522    tr1->RegisterYourself();
 523    TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
 524    TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
 525    //
 526    // pad plane and wire fixations
 527    //
 528    TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
 529    TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
 530    TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
 531    TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
 532    TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
 533    TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
 534    TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
 535    //
 536    TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
 537    //
 538    iroc->AddNode(ibdv,1);
 539    iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
 540    iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
 541    tga =(23.3521-14.5974)/49.65;
 542    Double_t xx = 24.825*tga+14.5974-0.6;
 543    iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
 544    iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
 545    //
 546    // OROC
 547    //
 548    TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
 549    TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
 550    TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
 551    TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
 552    obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
 553    //horizontal bars
 554    tga=(38.5084-20.2938)/99.3;
 555    xmin=tga*10.2+20.2938;
 556    xmax=tga*10.6+20.2938;
 557    TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 558    TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
 559    //
 560    xmin=22.55*tga+20.2938;
 561    xmax=24.15*tga+20.2938;
 562    TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
 563    TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
 564    //
 565    xmin=36.1*tga+20.2938;
 566    xmax=36.5*tga+20.2938;
 567    TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 568    TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
 569    //
 570    xmin=49.0*tga+20.2938;
 571    xmax=50.6*tga+20.2938;
 572    TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
 573    TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
 574    //
 575    xmin=63.6*tga+20.2938;
 576    xmax=64.0*tga+20.2938;
 577    TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 578    TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
 579    //
 580    xmin=75.5*tga+20.2938;
 581    xmax=77.15*tga+20.2938;
 582    TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
 583    TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
 584    //
 585    xmin=88.7*tga+20.2938;
 586    xmax=89.1*tga+20.2938;
 587    TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
 588    TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
 589    //
 590    oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
 591    oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
 592    oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
 593    oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
 594    oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
 595    oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
 596    oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
 597    // vertical bars
 598    TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
 599    TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
 600    TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
 601    TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
 602    TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
 603    //
 604    TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
 605    TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
 606    TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
 607    TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
 608    TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
 609    //
 610    oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
 611    oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
 612    oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
 613    oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
 614    oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
 615    oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
 616    oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
 617    oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
 618    //
 619    // holes for connectors
 620    //
 621    fileName = gSystem->Getenv("ALICE_ROOT");
 622    fileName += "/TPC/conn_oroc.dat";
 623    in.open(fileName.Data(), ios_base::in); // asci file
 624    for(Int_t i =0;i<78;i++){
 625       Double_t y =3.89;
 626       Double_t x,z,ang;
 627       Double_t x1,z1,x2,z2;
 628       in>>x>>z>>ang;
 629       Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
 630       Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
 631       //
 632       x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
 633       //
 634       TGeoRotation *rr = new TGeoRotation();
 635       rr->RotateY(ang);
 636       z1-=54.95;
 637       z2-=54.95;
 638       TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
 639       TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
 640       obdv->AddNode(connv,i+1,trans1);
 641       obdv->AddNode(connv,i+79,trans2);
 642    }
 643    in.close();
 644    // cap
 645    new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
 646    new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
 647    TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
 648    tr5->RegisterYourself();
 649    TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
 650    TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
 651    //
 652    // pad plane and wire fixations
 653    //
 654    TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
 655    TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
 656    //
 657    tga=(43.5239-23.3874)/114.2;
 658    TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
 659    TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
 660    xx = 57.1*tga+23.3874-0.7;
 661    TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
 662    TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
 663    //
 664    TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
 665    //
 666    oroc->AddNode(obdv,1);
 667    oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
 668    oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
 669    oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
 670    oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
 671    //
 672    // now iroc and oroc are placed into a sector...
 673    //
 674    TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
 675    TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
 676    //
 677    TGeoVolumeAssembly *sect = new TGeoVolumeAssembly("TPC_SECT");
 678    TGeoRotation rot1("rot1",90.,90.,0.);
 679    TGeoRotation rot2("rot2");
 680    rot2.RotateY(10.);
 681    TGeoRotation *rot = new TGeoRotation("rot");
 682    *rot=rot1*rot2;
 683    //
 684    Double_t x0,y0;
 685    x0=110.2*TMath::Cos(openingAngle);
 686    y0=110.2*TMath::Sin(openingAngle);
 687    TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //a-side
 688    TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //c-side
 689    x0=188.45*TMath::Cos(openingAngle);
 690    y0=188.45*TMath::Sin(openingAngle);
 691    TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //a-side
 692    TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //c-side
 693    //
 694    // A-side
 695    //
 696    secta->AddNode(ch,1);
 697    secta->AddNode(iroc,1,combi1a);
 698    secta->AddNode(oroc,1,combi2a);
 699    //
 700    // C-side
 701    //
 702    sectc->AddNode(ch,1);
 703    sectc->AddNode(iroc,1,combi1c);
 704    sectc->AddNode(oroc,1,combi2c);
 705    //
 706    // now I try to make  wheels...
 707    //
 708    TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
 709    TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
 710    //
 711    for(Int_t i =0;i<18;i++){
 712      Double_t phi = (20.*i);
 713      TGeoRotation *r = new TGeoRotation();
 714      r->RotateZ(phi);
 715      wheela->AddNode(secta,i+1,r);
 716      wheelc->AddNode(sectc,i+1,r);
 717    }
 718    // wheels in the drift volume!
 719    TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
 720    v9->AddNode(wheela,1,combi3);
 721    v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
 722    //_____________________________________________________________
 723    // service support wheel
 724    //_____________________________________________________________
 725   TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
 726   sw->DefineSection(0,-4.,80.5,251.75);
 727   sw->DefineSection(1,4.,80.5,251.75);
 728   TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
 729   //
 730   thick=1.;
 731   shift = thick/TMath::Sin(openingAngle);
 732   TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
 733   sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
 734   sh->DefineSection(1,4.,81.5-shift,250.75-shift);
 735   TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
 736   //
 737   TGeoMedium *m9 =  gGeoManager->GetMedium("TPC_Si");
 738   TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
 739   el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
 740   el->DefineSection(1,1.872,81.5-shift,250.75-shift);
 741   TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
 742   //
 743   shv->AddNode(elv,1);
 744   //
 745   //
 746   ys = shift*TMath::Sin(openingAngle);
 747   xs = shift*TMath::Cos(openingAngle);
 748   swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
 749   // cover
 750   TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
 751   co->DefineSection(0,-0.5,77.,255.25);
 752   co->DefineSection(1,0.5,77.,255.25);
 753   TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
 754   // hole in a cover
 755   TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
 756   shift=4./TMath::Sin(openingAngle);
 757   coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
 758   coh->DefineSection(1,0.5,85.-shift,247.25-shift);
 759   //
 760   TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
 761   //
 762   ys = shift*TMath::Sin(openingAngle);
 763   xs = shift*TMath::Cos(openingAngle);
 764   cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
 765   //
 766   // Sector as an Assembly
 767   //
 768   TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
 769   swhs->AddNode(swv,1);
 770   swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
 771   swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
 772   //
 773   // SSW as an Assembly of sectors
 774   //
 775  TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
 776    for(Int_t i =0;i<18;i++){
 777      Double_t phi = (20.*i);
 778      TGeoRotation *r = new TGeoRotation();
 779      r->RotateZ(phi);
 780      swheel->AddNode(swhs,i+1,r);
 781    }
 782    v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
 783    v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
 784    //
 785   //----------------------------------------------------------
 786   // TPc Support Rods - MAKROLON
 787   //----------------------------------------------------------
 788   TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
 789   TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
 790   // upper and lower rods differ in length!
 791   Double_t *upar;
 792   upar=NULL;
 793   gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
 794   upar=new Double_t [3];
 795   upar[0]=1.8;
 796   upar[1]=2.2;
 797
 798   //
 799   //HV rods - makrolon + 0.58cm (diameter) Cu
 800   TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
 801   TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
 802   //
 803   TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
 804   TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
 805   hvrv->AddNode(hvcv,1);
 806   for(Int_t i=0;i<18;i++){
 807     Double_t angle,x,y;
 808     Double_t z,r;
 809     angle=TMath::DegToRad()*20.*(Double_t)i;
 810     r=81.5;
 811     x=r * TMath::Cos(angle);
 812     y=r * TMath::Sin(angle);
 813     upar[2]=126.64; //lower
 814     z= 126.96;
 815     if(i==15){
 816       v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));
 817       v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z));
 818     }
 819     else{
 820      gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
 821      gGeoManager->Node("TPC_Rod",i+18,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
 822     }
 823     r=254.25;
 824     x=r * TMath::Cos(angle);
 825     y=r * TMath::Sin(angle);
 826     upar[2]=126.54; //upper
 827     z=127.06;
 828     gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
 829     gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
 830   }
 831
 832   TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
 833   alice->AddNode(v1,1);
 834
 835
 836 } // end of function
 837
 838
 839 //_____________________________________________________________________________
 840 void AliTPCv0::CreateMaterials()
 841 {
 842   //
 843   // Define materials for the TPC
 844   //
 845   AliTPC::CreateMaterials();
 846 }
 847
 848 //_____________________________________________________________________________
 849 void AliTPCv0::DrawDetector()
 850 {
 851   //
 852   // Draw a shaded view of the Time Projection Chamber version 0
 853   //
 854
 855   // Set everything unseen
 856   gMC->Gsatt("*", "seen", -1);
 857   //
 858   // Set ALIC mother transparent
 859   gMC->Gsatt("ALIC","SEEN",0);
 860   //
 861   // Set the volumes visible
 862   gMC->Gsatt("TPC ","SEEN",0);
 863   gMC->Gsatt("TOIN","SEEN",1);
 864   gMC->Gsatt("TOIN","COLO",7);
 865   gMC->Gsatt("TOCV","SEEN",1);
 866   gMC->Gsatt("TOCV","COLO",4);
 867   gMC->Gsatt("TSA1","SEEN",0);
 868   gMC->Gsatt("TSA2","SEEN",0);
 869   gMC->Gsatt("TSA3","SEEN",0);
 870   gMC->Gsatt("TSA4","SEEN",0);
 871   gMC->Gsatt("TSA5","SEEN",0);
 872   gMC->Gsatt("TOFC","SEEN",1);
 873   gMC->Gsatt("TOFC","COLO",4);
 874   gMC->Gsatt("TSA6","SEEN",0);
 875   gMC->Gsatt("TSA7","SEEN",0);
 876   gMC->Gsatt("TSA8","SEEN",0);
 877   gMC->Gsatt("TIIN","SEEN",1);
 878   gMC->Gsatt("TIIN","COLO",7);
 879   gMC->Gsatt("TII1","SEEN",0);
 880   gMC->Gsatt("TIFC","SEEN",1);
 881   gMC->Gsatt("TIFC","COLO",4);
 882   gMC->Gsatt("TSA9","SEEN",0);
 883   gMC->Gsatt("TS10","SEEN",0);
 884   gMC->Gsatt("TS11","SEEN",0);
 885   gMC->Gsatt("TS12","SEEN",0);
 886   gMC->Gsatt("TS13","SEEN",0);
 887   gMC->Gsatt("TS14","SEEN",0);
 888   gMC->Gsatt("TICC","SEEN",0);
 889   gMC->Gsatt("TICM","SEEN",0);
 890   gMC->Gsatt("TS15","SEEN",0);
 891   gMC->Gsatt("TS16","SEEN",0);
 892   gMC->Gsatt("TS17","SEEN",0);
 893   gMC->Gsatt("TS18","SEEN",0);
 894   gMC->Gsatt("TS19","SEEN",0);
 895   gMC->Gsatt("TPJ1","SEEN",0);
 896   gMC->Gsatt("TPJ2","SEEN",0);
 897   gMC->Gsatt("TICS","SEEN",0);
 898   gMC->Gsatt("TDGN","SEEN",0);
 899   gMC->Gsatt("TIRC","SEEN",0);
 900   gMC->Gsatt("TIC1","SEEN",1);
 901   gMC->Gsatt("TIPP","SEEN",0);
 902   gMC->Gsatt("TIC3","SEEN",0);
 903   gMC->Gsatt("TRCE","SEEN",0);
 904   gMC->Gsatt("TPSC","SEEN",0);
 905   gMC->Gsatt("TPCC","SEEN",0);
 906   gMC->Gsatt("TORC","SEEN",0);
 907   gMC->Gsatt("TOPP","SEEN",0);
 908   gMC->Gsatt("TOC3","SEEN",0);
 909   gMC->Gsatt("TOC1","SEEN",1);
 910   gMC->Gsatt("TSSW","SEEN",1);
 911   gMC->Gsatt("TSWC","SEEN",1);
 912   gMC->Gsatt("TSSW","COLO",3);
 913   gMC->Gsatt("TSWC","COLO",3);
 914   gMC->Gsatt("TSCE","COLO",6);
 915   gMC->Gsatt("TSCE","SEEN",1);
 916   gMC->Gsatt("TWES","SEEN",0);
 917   gMC->Gsatt("TSWB","SEEN",0);
 918   gMC->Gsatt("TPEL","SEEN",0);
 919   gMC->Gsatt("TPMW","SEEN",1);
 920   gMC->Gsatt("TESR","SEEN",1);
 921   gMC->Gsatt("TPMW","COLO",12);
 922   gMC->Gsatt("TIC1","COLO",5);
 923   gMC->Gsatt("TOC1","COLO",5);
 924   gMC->Gsatt("TESB","SEEN",0);
 925   gMC->Gsatt("THVM","SEEN",1);
 926   gMC->Gsatt("THVM","COLO",11);
 927   gMC->Gsatt("THVH","SEEN",0);
 928   gMC->Gsatt("TPSR","SEEN",0);
 929   gMC->Gsatt("THVL","SEEN",0);
 930   gMC->Gsatt("THVC","SEEN",0);
 931   gMC->Gsatt("THVE","SEEN",0);
 932   gMC->Gsatt("THVR","SEEN",0);
 933
 934   //
 935   gMC->Gdopt("hide", "on");
 936   gMC->Gdopt("shad", "on");
 937   gMC->Gsatt("*", "fill", 7);
 938   gMC->SetClipBox(".");
 939   gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
 940   gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
 941   gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
 942   gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
 943   gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
 944   gMC->DefaultRange();
 945   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
 946   gMC->Gdhead(1111, "Time Projection Chamber");
 947   gMC->Gdman(18, 4, "MAN");
 948   gMC->Gdopt("hide","off");
 949 }
 950
 951 //_____________________________________________________________________________
 952 void AliTPCv0::Init()
 953 {
 954   //
 955   // Initialise Time Projection Chamber version 0
 956   //
 957
 958   printf("%s: *** TPC version 0 initialized***\n",ClassName());
 959
 960   //  printf("TPC version 0 initialized\n");
 961 }
 962
 963 //_____________________________________________________________________________
 964 void AliTPCv0::StepManager()
 965 {
 966   //
 967   // Procedure called at each step in the TPC
 968   //
 969 }