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 <TGeoGlobalMagField.h>
  35 #include <TLorentzVector.h>
  36 #include <TMath.h>
  37 #include <TVirtualMC.h>
  38
  39 #include "AliLog.h"
  40 #include "AliMagF.h"
  41 #include "AliRun.h"
  42 #include "AliT0hit.h"
  43 #include "AliT0v0.h"
  44 #include "AliLog.h"
  45
  46 ClassImp(AliT0v0)
  47
  48 //--------------------------------------------------------------------
  49 AliT0v0::AliT0v0(const char *name, const char *title):
  50   AliT0(name,title),
  51   fIdSens1(0)
  52 {
  53   //
  54   // Standart constructor for T0 Detector version 0
  55   //
  56   //  fIdSens1=0;
  57 //  setBufferSize(128000);
  58 }
  59 //-------------------------------------------------------------------------
  60 void AliT0v0::CreateGeometry()
  61 {
  62   //
  63   // Create the geometry of T0 Detector version 0
  64   // Full geometry with support structure according T0 prototype
  65   //
  66   // begin Html
  67   /*
  68    <img src="gif/AliT0v0.gif">
  69   */
  70   //
  71
  72
  73
  74   Int_t *idtmed = fIdtmed->GetArray();
  75
  76   Int_t is;
  77   Int_t idrotm[999];
  78   Float_t x,y,z;
  79  Float_t pstartR[18]={0., 360., 5.,
  80                        -76.5+0.00+69.7, 4.25, 10.,
  81                        -76.5+6.05+69.7, 4.5, 10.,
  82                        -76.5+8.05+69.7, 4.5, 10.,
  83                        -76.5+8.05+69.7, 5.1, 10.,
  84                        -62.9+0.00+69.7, 5.1, 10.};
  85
  86   Float_t pstart[3]={4.3, 12.,6.8};
  87   Float_t pinstart[3]={0.,1.6,6.5};
  88   Float_t ppmt[3]={0.,1.5,3.5};
  89
  90   Float_t preg[3]={0.,0.875,0.005}; //dobavil bogdanov
  91
  92   Float_t pdivider[3]={0.,1.2,1.75};
  93   Float_t pdiv2[3]={0.,1.2,1.25};
  94   Float_t pdiv1[3]={0.6,1.2,0.5};
  95   //  Float_t ptop[3]={0.,1.3,1.5};
  96   Float_t ptop[3]={0.,1.0,1.5};
  97   Float_t pbot[3]={0.6,1.2,0.1};
  98   Float_t pglass[3]={1.2,1.3,2.};
  99   Float_t pcer[3]={0.9,1.1,0.09};
 100   Float_t psteel[3]={0.9,1.1,0.01};
 101   Float_t ppins[3]={0.6,1.2,0.014};
 102   Float_t phole[3]={0.6,1.2,0.015};
 103   Float_t pknob[3]={0.5,0.6,0.4};
 104   Float_t pknob_vac[3]={0.,0.5,0.4};
 105   Float_t pknob_bot[3]={0.,0.6,0.05};
 106   Float_t pribber[3] = {0.,1.2,2.413/2.};
 107   Float_t presist[3] = {0.,1.2,0.087/2.};
 108   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
 109   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
 110   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
 111    Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
 112   Float_t psupport6[3] = {0,1.5,0.05}; //kryshechka stakanchika  Al
 113   Float_t psupport7[3] = {1.5,1.6,0.6}; //kolechko snaruzhu stakanchika Al
 114   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
 115     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
 116   Float_t ppcon[70];
 117     ppcon[0]  =   0;
 118     ppcon[1]  = 360;
 119     ppcon[2]  =  13;
 120 //  1:
 121     ppcon[3]  =  14.1/2;
 122     ppcon[4]  =   4.4;
 123     ppcon[5]  =   4.5;
 124 //  2
 125     ppcon[6]  = ppcon[3]+1.;
 126     ppcon[7]  =   4.4;
 127     ppcon[8]  =   4.5;
 128 //  3
 129     ppcon[9]  = ppcon[6];
 130     ppcon[10] =   4.4;
 131     ppcon[11] =   5.1;
 132
 133 //  4
 134
 135     ppcon[12]  = ppcon[9]+0.1;
 136     ppcon[13] =   4.4;
 137     ppcon[14] =   5.1;
 138 //  5
 139
 140     ppcon[15]  = ppcon[12];
 141     ppcon[16] =   4.9;
 142     ppcon[17] =   5.1;
 143
 144 //  6
 145     ppcon[18]  = ppcon[15]+7.05;
 146     ppcon[19] =   4.9;
 147     ppcon[20] =   5.1;
 148
 149 //  7
 150     ppcon[21]  = ppcon[18];
 151     ppcon[22] =   4.9;
 152     ppcon[23] =   5.1;
 153
 154 /// 8
 155     ppcon[24]  = ppcon[21]+0.01;
 156     ppcon[25] =   3.15;
 157     ppcon[26] =   3.25;
 158
 159 /// 9
 160     ppcon[27]  = ppcon[24];
 161     ppcon[28] =   3.15;
 162     ppcon[29] =   3.25;
 163
 164 //  10
 165     ppcon[30]  = ppcon[27]+4.5;
 166     ppcon[31] =   3.15;
 167     ppcon[32] =   3.25;
 168
 169 //  11
 170     ppcon[33] = ppcon[30];
 171     ppcon[34] =   3.15;
 172     ppcon[35] =   3.25;
 173
 174 //  12
 175     ppcon[36]  = ppcon[33];
 176     ppcon[37] =   3.15;
 177     ppcon[38] =   7.6;
 178
 179 //  13
 180     ppcon[39]  = ppcon[33]+0.4;
 181     ppcon[40] =   3.15;
 182     ppcon[41] =   7.6;
 183
 184 //  14
 185 //    ppcon[39]  = ppcon[36];
 186 //    ppcon[40] =   3.15;
 187 //    ppcon[41] =   7.6;
 188
 189     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
 190     z=-69.7;//-14.1/2;
 191     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
 192
 193
 194    Float_t zdetRight=69.7,zdetLeft=350;
 195  //-------------------------------------------------------------------
 196  //  T0 volume
 197  //-------------------------------------------------------------------
 198
 199
 200     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
 201     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
 202     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetRight-pstart[2],idrotm[901],"ONLY");
 203     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetLeft+pstart[2],0,"ONLY");
 204
 205 //T0 interior
 206     gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
 207     gMC->Gsvolu("0PMT","TUBE",idtmed[kOpAir],ppmt,3);
 208     gMC->Gsvolu("0DIV","TUBE",idtmed[kVac],pdivider,3);
 209     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
 210     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
 211     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
 212     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
 213     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
 214     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
 215     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
 216     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
 217
 218 // first ring: 12 units of Scintillator+PMT+divider
 219   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetRight);
 220   Float_t angle  = 2 * TMath::Pi() / 12;
 221   Float_t phi[3];
 222
 223    for (is=0; is<12; is++)
 224       {
 225
 226         x = 6.5 * TMath::Sin(is * angle);
 227         y = 6.5 * TMath::Cos(is * angle);
 228
 229         phi[0] = -30 * is;
 230         phi[1] = 90 - is * 30;
 231         phi[2] = 90 - is * 30;
 232         for (Int_t j = 0; j < 3; j++)
 233           if (phi[j] < 0)  phi[j] += 360;
 234
 235         AliMatrix (idrotm[902 + is], 90.,         phi[0],
 236                    90. + theta, phi[1],
 237                    theta,       phi[2]);
 238         z=-pstart[2]+pinstart[2]+0.2;
 239         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
 240         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
 241
 242         x = 9 * TMath::Sin(angle/2+is * angle);
 243         y = 9 * TMath::Cos(angle/2+is * angle);
 244
 245         gMC->Gspos ("0INS", is + 25, "0STL", x, y, z, 0, "ONLY");
 246
 247       }
 248
 249
 250    x=0;
 251    y=0;
 252    z=-pinstart[2]+ppmt[2]+2.*psupport6[2]+0.1;
 253    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
 254    z=z+pdivider[2]+ppmt[2];
 255    gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
 256
 257    // PMT
 258
 259    // Entry window (glass)
 260    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
 261    //   gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
 262    z=-ppmt[2]+ptop[2];
 263    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
 264
 265    //Fotokatod
 266
 267    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlass], preg, 3); //photocathode dobavil bogdanov(AliT0v2)
 268    z = -ppmt[2] + 2 * ptop[2] + preg[2]; //photocathode dobavil bogdanov
 269    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); //photocathode dobavil bogdanov(AliT0v2)
 270
 271    // Bottom glass
 272    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
 273    z=ppmt[2]-pbot[2];
 274    AliDebugClass(1,Form(" Z bottom %f\n",z));
 275    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
 276    // Side cylinder glass
 277    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
 278    z=ppmt[2]-pglass[2];
 279    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
 280    //PMT electrodes support structure
 281    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
 282    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
 283    z=-ppmt[2]+2*ptop[2]+0.3;;
 284    for (is=1; is<=15; is++)
 285      {
 286        z=z+psteel[2]+pcer[2];
 287        gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
 288        z=z+psteel[2]+pcer[2];
 289        gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
 290      }
 291
 292    // Divider
 293    // Knob at the bottom of PMT baloon
 294
 295    gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
 296    z=-pdivider[2]+pknob[2];
 297    gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
 298    gMC->Gsvolu("0KB","TUBE",idtmed[kGlass],pknob_bot,3);
 299    z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
 300    gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
 301    gMC->Gsvolu("0VAC","TUBE",idtmed[kVac],pknob_vac,3);
 302    z=-pdivider[2]+pknob_vac[2];
 303    gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
 304    //Steel pins + pin holes
 305    gMC->Gsvolu("0PIN","TUBE",idtmed[kSteel],ppins,3);
 306    z=-pdivider[2]+ppins[2];
 307    gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
 308    gMC->Gsvolu("0HOL","TUBE",idtmed[kBrass],phole,3);
 309    z=-pdivider[2]+2*ppins[2]+phole[2];
 310    gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
 311
 312    //Socket
 313    gMC->Gsvolu("0V1","TUBE",idtmed[kCer],pdiv1,3);
 314    z=-pdivider[2]+pdiv1[2];
 315    gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
 316    //Resistors
 317    gMC->Gsvolu("0V2","TUBE",idtmed[kAir],pdiv2,3);
 318    z=pdivider[2]-pdiv2[2];
 319    gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
 320    gMC->Gsvolu("0RS","TUBE",idtmed[kCer],presist,3);
 321    z=-pdiv2[2]+presist[2];
 322    gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
 323    gMC->Gsvolu("0RB","TUBE",idtmed[kRibber],pribber,3);
 324    z=pdiv2[2]-pribber[2];
 325    gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
 326
 327
 328    //Support  left side
 329    /*
 330    z=-pstart[2]+psupport1[2];
 331    gMC->Gspos("0SU1",2,"0STL",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 332    gMC->Gspos("0SU2",2,"0STL",0,0,z,0,"ONLY"); //C kozhuh vnutri
 333    z=-pstart[2]+psupport3[2];
 334    gMC->Gspos("0SU3",2,"0STL",0,0,z,0,"ONLY"); //peredniaia kryshka
 335    z=-pstart[2]+2.*psupport1[2];
 336    gMC->Gspos("0SU4",2,"0STL",0,0,z,0,"MANY"); //zadnaiai kryshka
 337    */
 338    z=-pstart[2]+psupport1[2]+0.1;
 339    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 340    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
 341    z=-pstart[2]+psupport3[2]+0.1;
 342    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
 343    z=-pstart[2]+2.*psupport1[2]+0.1;
 344    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
 345    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
 346    z=-pinstart[2]+psupport6[2];
 347    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
 348
 349    z=pinstart[2]-psupport7[2];
 350    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
 351
 352
 353    Float_t par[3];
 354    par[0]=4.4;
 355    par[1]=4.5;
 356    par[2]=0.5;
 357    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
 358    z=ppcon[3]+par[2];
 359    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
 360    z += par[2];
 361    par[0]=4.4;
 362    par[1]=5.1;
 363    par[2]=0.05;
 364    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
 365    z += par[2];
 366    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
 367    z=z+par[2];
 368    par[0]=4.9;
 369    par[1]=5.0;
 370    par[2]=6.9/2;
 371     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
 372     z += par[2];
 373     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
 374     z += par[2];
 375     /*
 376     Float_t parC[5];
 377     parC[0]=0.25;
 378     parC[1]=5.1;
 379     parC[2]=5.2;
 380     parC[3]=5.5;
 381     parC[4]=5.6;
 382     gMC->Gsvolu("0SC3","CONE",idtmed[kC],parC,5);
 383     z += parC[0];
 384     gMC->Gspos("0SC3",1,"0SUP",0,0,z,0,"ONLY");
 385     z += parC[0];
 386     par[0]=5.5;
 387     par[1]=5.6;
 388     par[2]=1.2/2;
 389     gMC->Gsvolu("0SC4","TUBE",idtmed[kC],par,3);
 390     z += par[2];
 391     gMC->Gspos("0SC4",1,"0SUP",0,0,z,0,"ONLY");
 392     par[0]=5.1;
 393     par[1]=5.5;
 394     par[2]=1.2/2;
 395     gMC->Gsvolu("0SA0","TUBE",idtmed[kAl],par,3);
 396     gMC->Gspos("0SA0",1,"0SUP",0,0,z,0,"ONLY");
 397     //gvozdi dlia skruchivaniia Al i C parts
 398     par[0]=5.75;
 399     par[1]=5.78;
 400     gMC->Gsvolu("0SN1","TUBE",idtmed[kSteel],par,3);
 401     gMC->Gspos("0SN1",1,"0SUP",0,0,z,0,"ONLY");
 402     z += par[2];
 403     */
 404     par[0]=3.15;
 405     par[1]=4.9;
 406     par[2]=0.1/2;
 407     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
 408
 409     z += par[2];
 410     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
 411     z=z+par[2];
 412     par[0]=3.15;
 413     par[1]=3.16;
 414     par[2]=4.5/2;
 415     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
 416     z += par[2];
 417     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
 418     z=z+par[2];
 419     par[0]=3.16; // eta chast' prikruchena k absorberu
 420     par[1]=7.5;
 421     par[2]=0.2;
 422     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
 423     z += par[2];
 424     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
 425     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
 426     par[1]=7.5;
 427     par[2]=0.01;
 428     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
 429     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
 430
 431
 432 }
 433
 434 //------------------------------------------------------------------------
 435 void AliT0v0::CreateMaterials()
 436 {
 437    Int_t isxfld   = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
 438    Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
 439    Float_t a,z,d,radl,absl,buf[1];
 440    Int_t nbuf;
 441
 442 // Scintillator CH
 443    Float_t ascin[2]={1.01,12.01};
 444    Float_t zscin[2]={1,6};
 445    Float_t wscin[2]={1,1};
 446    Float_t denscin=1.03;
 447 //Lucite C(CH3)CO2CH3
 448    Float_t alucite[3]={1.01,12.01,15.999};
 449    Float_t zlucite[3]={1,6,8};
 450    Float_t wlucite[3]={8,5,2};
 451    Float_t denlucite=1.16;
 452  // PMT glass SiO2
 453    Float_t aglass[2]={28.0855,15.9994};
 454    Float_t zglass[2]={14.,8.};
 455    Float_t wglass[2]={1.,2.};
 456    Float_t dglass=2.65;
 457 // Ceramic   97.2% Al2O3 , 2.8% SiO2
 458    Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
 459    Float_t aal2o3[2]  = { 26.981539,15.9994 };
 460    Float_t zal2o3[2]  = { 13.,8. };
 461    Float_t wal2o3[2]  = { 2.,3. };
 462    Float_t denscer  = 3.6;
 463
 464 // Brass 80% Cu, 20% Zn
 465    Float_t abrass[2] = {63.546,65.39};
 466    Float_t zbrass[2] = {29,30};
 467    Float_t wbrass[2] = {0.8,0.2};
 468    Float_t denbrass=8.96;
 469
 470 //Ribber C6H12S
 471    Float_t aribber[3] = {12.,1.,32.};
 472    Float_t zribber[3] = {6.,1.,16.};
 473    Float_t wribber[3] = {6.,12.,1.};
 474    Float_t denribber=0.8;
 475 // Support inside
 476    Float_t asupport[2] = {12.,1.};
 477    Float_t zsupport[2] = {6.,1.};
 478    Float_t wsupport[2] = {1.,1.};
 479    Float_t densupport=0.1;
 480 // AIR
 481    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
 482    Float_t zAir[4]={6.,7.,8.,18.};
 483    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 484    Float_t dAir = 1.20479E-3;
 485
 486 //*** Definition Of avaible T0 materials ***
 487    AliMaterial(0, "T0 Steel$", 55.850,26.,7.87,1.76,999);
 488    AliMaterial(1, "T0 Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
 489    AliMixture(2, "T0 Air$", aAir, zAir, dAir,4,wAir);
 490
 491    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
 492    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
 493
 494    AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
 495    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
 496    char namate[21]="";
 497    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
 498    acer[0]=a;
 499    zcer[0]=z;
 500    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
 501    acer[1]=a;
 502    zcer[1]=z;
 503
 504    AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
 505    AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 506    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
 507
 508    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
 509    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
 510    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 511
 512
 513    AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 514    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 515    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 516    AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 517    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 518    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 519    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 520    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 521    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 522    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 523    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 524    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 525
 526    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
 527
 528 }
 529 //---------------------------------------------------------------------
 530 void AliT0v0::DrawModule() const
 531 {
 532 //
 533 // Draw a shaded view of the Forward multiplicity detector version 0
 534 //
 535
 536   //Set ALIC mother transparent
 537   gMC->Gsatt("ALIC","SEEN",0);
 538   //
 539   //Set volumes visible
 540   gMC->Gsatt("0STA","SEEN",0);
 541   gMC->Gsatt("0PMT","SEEN",1);
 542   gMC->Gsatt("0DIV","SEEN",1);
 543   //
 544   gMC->Gdopt("hide","on");
 545   gMC->Gdopt("shad","on");
 546   gMC->SetClipBox(".");
 547   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 548   gMC->DefaultRange();
 549   gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
 550   gMC->Gdhead(1111,"T-Zero detector");
 551   gMC->Gdopt("hide","off");
 552 }
 553
 554 //-------------------------------------------------------------------
 555 void AliT0v0::Init()
 556 {
 557 // Initialises version 0 of the Forward Multiplicity Detector
 558 //
 559 //Int_t *idtmed  = gAlice->Idtmed();
 560   AliT0::Init();
 561   fIdSens1=gMC->VolId("0TOP");
 562   AliDebug(1,Form("%s: *** T0 version 0 initialized ***\n",ClassName()));
 563
 564 }
 565
 566 //-------------------------------------------------------------------
 567
 568 void AliT0v0::StepManager()
 569 {
 570   //
 571   // Called for every step in the T0 Detector
 572   // See AliT0v1
 573
 574 }
 575 //---------------------------------------------------------------------
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585