T0/AliT0v0.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 // T0 ( T-zero) detector  version 0                        //
  21 //
  22 //Begin Html
  23 /*
  24 <img src="gif/AliT0v0Class.gif">
  25 */
  26 //End Html
  27 //                                                                  //
  28 //                                                                  //
  29 //////////////////////////////////////////////////////////////////////
  30
  31 #include <Riostream.h>
  32 #include <stdlib.h>
  33
  34 #include <TGeometry.h>
  35 #include <TLorentzVector.h>
  36 #include <TMath.h>
  37 #include <TNode.h>
  38 #include <TTUBE.h>
  39 #include <TVirtualMC.h>
  40
  41 #include "AliLog.h"
  42 #include "AliMagF.h"
  43 #include "AliRun.h"
  44 #include "AliT0hit.h"
  45 #include "AliT0v0.h"
  46 #include "AliLog.h"
  47
  48 ClassImp(AliT0v0)
  49
  50 //--------------------------------------------------------------------
  51 AliT0v0::AliT0v0(const char *name, const char *title):
  52   AliT0(name,title),
  53   fIdSens1(0)
  54 {
  55   //
  56   // Standart constructor for T0 Detector version 0
  57   //
  58   //  fIdSens1=0;
  59 //  setBufferSize(128000);
  60 }
  61 //-------------------------------------------------------------------------
  62 void AliT0v0::CreateGeometry()
  63 {
  64   //
  65   // Create the geometry of T0 Detector version 0
  66   // Full geometry with support structure according T0 prototype
  67   //
  68   // begin Html
  69   /*
  70    <img src="gif/AliT0v0.gif">
  71   */
  72   //
  73
  74
  75
  76   Int_t *idtmed = fIdtmed->GetArray();
  77
  78   Int_t is;
  79   Int_t idrotm[999];
  80   Float_t x,y,z;
  81  Float_t pstartR[18]={0., 360., 5.,
  82                        -76.5+0.00+69.7, 4.25, 10.,
  83                        -76.5+6.05+69.7, 4.5, 10.,
  84                        -76.5+8.05+69.7, 4.5, 10.,
  85                        -76.5+8.05+69.7, 5.1, 10.,
  86                        -62.9+0.00+69.7, 5.1, 10.};
  87
  88   Float_t pstart[3]={4.3, 12.,6.8};
  89   Float_t pinstart[3]={0.,1.6,6.5};
  90   Float_t ppmt[3]={0.,1.5,3.5};
  91
  92   Float_t preg[3]={0.,0.875,0.005}; //dobavil bogdanov
  93
  94   Float_t pdivider[3]={0.,1.2,1.75};
  95   Float_t pdiv2[3]={0.,1.2,1.25};
  96   Float_t pdiv1[3]={0.6,1.2,0.5};
  97   //  Float_t ptop[3]={0.,1.3,1.5};
  98   Float_t ptop[3]={0.,1.0,1.5};
  99   Float_t pbot[3]={0.6,1.2,0.1};
 100   Float_t pglass[3]={1.2,1.3,2.};
 101   Float_t pcer[3]={0.9,1.1,0.09};
 102   Float_t psteel[3]={0.9,1.1,0.01};
 103   Float_t ppins[3]={0.6,1.2,0.014};
 104   Float_t phole[3]={0.6,1.2,0.015};
 105   Float_t pknob[3]={0.5,0.6,0.4};
 106   Float_t pknob_vac[3]={0.,0.5,0.4};
 107   Float_t pknob_bot[3]={0.,0.6,0.05};
 108   Float_t pribber[3] = {0.,1.2,2.413/2.};
 109   Float_t presist[3] = {0.,1.2,0.087/2.};
 110   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
 111   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
 112   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
 113    Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
 114   Float_t psupport6[3] = {0,1.5,0.05}; //kryshechka stakanchika  Al
 115   Float_t psupport7[3] = {1.5,1.6,0.6}; //kolechko snaruzhu stakanchika Al
 116   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
 117     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
 118   Float_t ppcon[70];
 119     ppcon[0]  =   0;
 120     ppcon[1]  = 360;
 121     ppcon[2]  =  13;
 122 //  1:
 123     ppcon[3]  =  14.1/2;
 124     ppcon[4]  =   4.4;
 125     ppcon[5]  =   4.5;
 126 //  2
 127     ppcon[6]  = ppcon[3]+1.;
 128     ppcon[7]  =   4.4;
 129     ppcon[8]  =   4.5;
 130 //  3
 131     ppcon[9]  = ppcon[6];
 132     ppcon[10] =   4.4;
 133     ppcon[11] =   5.1;
 134
 135 //  4
 136
 137     ppcon[12]  = ppcon[9]+0.1;
 138     ppcon[13] =   4.4;
 139     ppcon[14] =   5.1;
 140 //  5
 141
 142     ppcon[15]  = ppcon[12];
 143     ppcon[16] =   4.9;
 144     ppcon[17] =   5.1;
 145
 146 //  6
 147     ppcon[18]  = ppcon[15]+7.05;
 148     ppcon[19] =   4.9;
 149     ppcon[20] =   5.1;
 150
 151 //  7
 152     ppcon[21]  = ppcon[18];
 153     ppcon[22] =   4.9;
 154     ppcon[23] =   5.1;
 155
 156 /// 8
 157     ppcon[24]  = ppcon[21]+0.01;
 158     ppcon[25] =   3.15;
 159     ppcon[26] =   3.25;
 160
 161 /// 9
 162     ppcon[27]  = ppcon[24];
 163     ppcon[28] =   3.15;
 164     ppcon[29] =   3.25;
 165
 166 //  10
 167     ppcon[30]  = ppcon[27]+4.5;
 168     ppcon[31] =   3.15;
 169     ppcon[32] =   3.25;
 170
 171 //  11
 172     ppcon[33] = ppcon[30];
 173     ppcon[34] =   3.15;
 174     ppcon[35] =   3.25;
 175
 176 //  12
 177     ppcon[36]  = ppcon[33];
 178     ppcon[37] =   3.15;
 179     ppcon[38] =   7.6;
 180
 181 //  13
 182     ppcon[39]  = ppcon[33]+0.4;
 183     ppcon[40] =   3.15;
 184     ppcon[41] =   7.6;
 185
 186 //  14
 187 //    ppcon[39]  = ppcon[36];
 188 //    ppcon[40] =   3.15;
 189 //    ppcon[41] =   7.6;
 190
 191     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
 192     z=-69.7;//-14.1/2;
 193     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
 194
 195
 196    Float_t zdetRight=69.7,zdetLeft=350;
 197  //-------------------------------------------------------------------
 198  //  T0 volume
 199  //-------------------------------------------------------------------
 200
 201
 202     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
 203     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
 204     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetRight-pstart[2],idrotm[901],"ONLY");
 205     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetLeft+pstart[2],0,"ONLY");
 206
 207 //T0 interior
 208     gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
 209     gMC->Gsvolu("0PMT","TUBE",idtmed[kOpAir],ppmt,3);
 210     gMC->Gsvolu("0DIV","TUBE",idtmed[kVac],pdivider,3);
 211     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
 212     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
 213     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
 214     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
 215     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
 216     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
 217     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
 218     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
 219
 220 // first ring: 12 units of Scintillator+PMT+divider
 221   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetRight);
 222   Float_t angle  = 2 * TMath::Pi() / 12;
 223   Float_t phi[3];
 224
 225    for (is=0; is<12; is++)
 226       {
 227
 228         x = 6.5 * TMath::Sin(is * angle);
 229         y = 6.5 * TMath::Cos(is * angle);
 230
 231         phi[0] = -30 * is;
 232         phi[1] = 90 - is * 30;
 233         phi[2] = 90 - is * 30;
 234         for (Int_t j = 0; j < 3; j++)
 235           if (phi[j] < 0)  phi[j] += 360;
 236
 237         AliMatrix (idrotm[902 + is], 90.,         phi[0],
 238                    90. + theta, phi[1],
 239                    theta,       phi[2]);
 240         z=-pstart[2]+pinstart[2]+0.2;
 241         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
 242         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
 243
 244         x = 9 * TMath::Sin(angle/2+is * angle);
 245         y = 9 * TMath::Cos(angle/2+is * angle);
 246
 247         gMC->Gspos ("0INS", is + 25, "0STL", x, y, z, 0, "ONLY");
 248
 249       }
 250
 251
 252    x=0;
 253    y=0;
 254    z=-pinstart[2]+ppmt[2]+2.*psupport6[2]+0.1;
 255    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
 256    z=z+pdivider[2]+ppmt[2];
 257    gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
 258
 259    // PMT
 260
 261    // Entry window (glass)
 262    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
 263    //   gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
 264    z=-ppmt[2]+ptop[2];
 265    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
 266
 267    //Fotokatod
 268
 269    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlass], preg, 3); //photocathode dobavil bogdanov(AliT0v2)
 270    z = -ppmt[2] + 2 * ptop[2] + preg[2]; //photocathode dobavil bogdanov
 271    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); //photocathode dobavil bogdanov(AliT0v2)
 272
 273    // Bottom glass
 274    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
 275    z=ppmt[2]-pbot[2];
 276    AliDebugClass(1,Form(" Z bottom %f\n",z));
 277    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
 278    // Side cylinder glass
 279    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
 280    z=ppmt[2]-pglass[2];
 281    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
 282    //PMT electrodes support structure
 283    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
 284    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
 285    z=-ppmt[2]+2*ptop[2]+0.3;;
 286    for (is=1; is<=15; is++)
 287      {
 288        z=z+psteel[2]+pcer[2];
 289        gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
 290        z=z+psteel[2]+pcer[2];
 291        gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
 292      }
 293
 294    // Divider
 295    // Knob at the bottom of PMT baloon
 296
 297    gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
 298    z=-pdivider[2]+pknob[2];
 299    gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
 300    gMC->Gsvolu("0KB","TUBE",idtmed[kGlass],pknob_bot,3);
 301    z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
 302    gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
 303    gMC->Gsvolu("0VAC","TUBE",idtmed[kVac],pknob_vac,3);
 304    z=-pdivider[2]+pknob_vac[2];
 305    gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
 306    //Steel pins + pin holes
 307    gMC->Gsvolu("0PIN","TUBE",idtmed[kSteel],ppins,3);
 308    z=-pdivider[2]+ppins[2];
 309    gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
 310    gMC->Gsvolu("0HOL","TUBE",idtmed[kBrass],phole,3);
 311    z=-pdivider[2]+2*ppins[2]+phole[2];
 312    gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
 313
 314    //Socket
 315    gMC->Gsvolu("0V1","TUBE",idtmed[kCer],pdiv1,3);
 316    z=-pdivider[2]+pdiv1[2];
 317    gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
 318    //Resistors
 319    gMC->Gsvolu("0V2","TUBE",idtmed[kAir],pdiv2,3);
 320    z=pdivider[2]-pdiv2[2];
 321    gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
 322    gMC->Gsvolu("0RS","TUBE",idtmed[kCer],presist,3);
 323    z=-pdiv2[2]+presist[2];
 324    gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
 325    gMC->Gsvolu("0RB","TUBE",idtmed[kRibber],pribber,3);
 326    z=pdiv2[2]-pribber[2];
 327    gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
 328
 329
 330    //Support  left side
 331    /*
 332    z=-pstart[2]+psupport1[2];
 333    gMC->Gspos("0SU1",2,"0STL",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 334    gMC->Gspos("0SU2",2,"0STL",0,0,z,0,"ONLY"); //C kozhuh vnutri
 335    z=-pstart[2]+psupport3[2];
 336    gMC->Gspos("0SU3",2,"0STL",0,0,z,0,"ONLY"); //peredniaia kryshka
 337    z=-pstart[2]+2.*psupport1[2];
 338    gMC->Gspos("0SU4",2,"0STL",0,0,z,0,"MANY"); //zadnaiai kryshka
 339    */
 340    z=-pstart[2]+psupport1[2]+0.1;
 341    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 342    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
 343    z=-pstart[2]+psupport3[2]+0.1;
 344    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
 345    z=-pstart[2]+2.*psupport1[2]+0.1;
 346    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
 347    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
 348    z=-pinstart[2]+psupport6[2];
 349    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
 350
 351    z=pinstart[2]-psupport7[2];
 352    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
 353
 354
 355    Float_t par[3];
 356    par[0]=4.4;
 357    par[1]=4.5;
 358    par[2]=0.5;
 359    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
 360    z=ppcon[3]+par[2];
 361    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
 362    z += par[2];
 363    par[0]=4.4;
 364    par[1]=5.1;
 365    par[2]=0.05;
 366    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
 367    z += par[2];
 368    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
 369    z=z+par[2];
 370    par[0]=4.9;
 371    par[1]=5.0;
 372    par[2]=6.9/2;
 373     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
 374     z += par[2];
 375     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
 376     z += par[2];
 377     /*
 378     Float_t parC[5];
 379     parC[0]=0.25;
 380     parC[1]=5.1;
 381     parC[2]=5.2;
 382     parC[3]=5.5;
 383     parC[4]=5.6;
 384     gMC->Gsvolu("0SC3","CONE",idtmed[kC],parC,5);
 385     z += parC[0];
 386     gMC->Gspos("0SC3",1,"0SUP",0,0,z,0,"ONLY");
 387     z += parC[0];
 388     par[0]=5.5;
 389     par[1]=5.6;
 390     par[2]=1.2/2;
 391     gMC->Gsvolu("0SC4","TUBE",idtmed[kC],par,3);
 392     z += par[2];
 393     gMC->Gspos("0SC4",1,"0SUP",0,0,z,0,"ONLY");
 394     par[0]=5.1;
 395     par[1]=5.5;
 396     par[2]=1.2/2;
 397     gMC->Gsvolu("0SA0","TUBE",idtmed[kAl],par,3);
 398     gMC->Gspos("0SA0",1,"0SUP",0,0,z,0,"ONLY");
 399     //gvozdi dlia skruchivaniia Al i C parts
 400     par[0]=5.75;
 401     par[1]=5.78;
 402     gMC->Gsvolu("0SN1","TUBE",idtmed[kSteel],par,3);
 403     gMC->Gspos("0SN1",1,"0SUP",0,0,z,0,"ONLY");
 404     z += par[2];
 405     */
 406     par[0]=3.15;
 407     par[1]=4.9;
 408     par[2]=0.1/2;
 409     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
 410
 411     z += par[2];
 412     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
 413     z=z+par[2];
 414     par[0]=3.15;
 415     par[1]=3.16;
 416     par[2]=4.5/2;
 417     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
 418     z += par[2];
 419     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
 420     z=z+par[2];
 421     par[0]=3.16; // eta chast' prikruchena k absorberu
 422     par[1]=7.5;
 423     par[2]=0.2;
 424     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
 425     z += par[2];
 426     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
 427     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
 428     par[1]=7.5;
 429     par[2]=0.01;
 430     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
 431     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
 432
 433
 434 }
 435
 436 //------------------------------------------------------------------------
 437 void AliT0v0::CreateMaterials()
 438 {
 439    Int_t isxfld   = gAlice->Field()->Integ();
 440    Float_t sxmgmx = gAlice->Field()->Max();
 441    Float_t a,z,d,radl,absl,buf[1];
 442    Int_t nbuf;
 443
 444 // Scintillator CH
 445    Float_t ascin[2]={1.01,12.01};
 446    Float_t zscin[2]={1,6};
 447    Float_t wscin[2]={1,1};
 448    Float_t denscin=1.03;
 449 //Lucite C(CH3)CO2CH3
 450    Float_t alucite[3]={1.01,12.01,15.999};
 451    Float_t zlucite[3]={1,6,8};
 452    Float_t wlucite[3]={8,5,2};
 453    Float_t denlucite=1.16;
 454  // PMT glass SiO2
 455    Float_t aglass[2]={28.0855,15.9994};
 456    Float_t zglass[2]={14.,8.};
 457    Float_t wglass[2]={1.,2.};
 458    Float_t dglass=2.65;
 459 // Ceramic   97.2% Al2O3 , 2.8% SiO2
 460    Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
 461    Float_t aal2o3[2]  = { 26.981539,15.9994 };
 462    Float_t zal2o3[2]  = { 13.,8. };
 463    Float_t wal2o3[2]  = { 2.,3. };
 464    Float_t denscer  = 3.6;
 465
 466 // Brass 80% Cu, 20% Zn
 467    Float_t abrass[2] = {63.546,65.39};
 468    Float_t zbrass[2] = {29,30};
 469    Float_t wbrass[2] = {0.8,0.2};
 470    Float_t denbrass=8.96;
 471
 472 //Ribber C6H12S
 473    Float_t aribber[3] = {12.,1.,32.};
 474    Float_t zribber[3] = {6.,1.,16.};
 475    Float_t wribber[3] = {6.,12.,1.};
 476    Float_t denribber=0.8;
 477 // Support inside
 478    Float_t asupport[2] = {12.,1.};
 479    Float_t zsupport[2] = {6.,1.};
 480    Float_t wsupport[2] = {1.,1.};
 481    Float_t densupport=0.1;
 482 // AIR
 483    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
 484    Float_t zAir[4]={6.,7.,8.,18.};
 485    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 486    Float_t dAir = 1.20479E-3;
 487
 488 //*** Definition Of avaible T0 materials ***
 489    AliMaterial(0, "T0 Steel$", 55.850,26.,7.87,1.76,999);
 490    AliMaterial(1, "T0 Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
 491    AliMixture(2, "T0 Air$", aAir, zAir, dAir,4,wAir);
 492
 493    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
 494    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
 495
 496    AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
 497    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
 498    char namate[21]="";
 499    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
 500    acer[0]=a;
 501    zcer[0]=z;
 502    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
 503    acer[1]=a;
 504    zcer[1]=z;
 505
 506    AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
 507    AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 508    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
 509
 510    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
 511    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
 512    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 513
 514
 515    AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 516    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 517    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 518    AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 519    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 520    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 521    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 522    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 523    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 524    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 525    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 526    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 527
 528    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
 529
 530 }
 531 //---------------------------------------------------------------------
 532 void AliT0v0::DrawModule() const
 533 {
 534 //
 535 // Draw a shaded view of the Forward multiplicity detector version 0
 536 //
 537
 538   //Set ALIC mother transparent
 539   gMC->Gsatt("ALIC","SEEN",0);
 540   //
 541   //Set volumes visible
 542   gMC->Gsatt("0STA","SEEN",0);
 543   gMC->Gsatt("0PMT","SEEN",1);
 544   gMC->Gsatt("0DIV","SEEN",1);
 545   //
 546   gMC->Gdopt("hide","on");
 547   gMC->Gdopt("shad","on");
 548   gMC->SetClipBox(".");
 549   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 550   gMC->DefaultRange();
 551   gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
 552   gMC->Gdhead(1111,"T-Zero detector");
 553   gMC->Gdopt("hide","off");
 554 }
 555
 556 //-------------------------------------------------------------------
 557 void AliT0v0::Init()
 558 {
 559 // Initialises version 0 of the Forward Multiplicity Detector
 560 //
 561 //Int_t *idtmed  = gAlice->Idtmed();
 562   AliT0::Init();
 563   fIdSens1=gMC->VolId("0TOP");
 564   AliDebug(1,Form("%s: *** T0 version 0 initialized ***\n",ClassName()));
 565
 566 }
 567
 568 //-------------------------------------------------------------------
 569
 570 void AliT0v0::StepManager()
 571 {
 572   //
 573   // Called for every step in the T0 Detector
 574   // See AliT0v1
 575
 576 }
 577 //---------------------------------------------------------------------
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