START/AliSTARTv1.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
  17 /////////////////////////////////////////////////////////////////////
  18 //                                                                 //
  19 // START ( T-zero) detector  version 1                             //
  20 //
  21 //Begin Html
  22 /*
  23 <img src="gif/AliSTARTv1Class.gif">
  24 */
  25 //End Html
  26 //                                                                  //
  27 //                                                                  //
  28 //////////////////////////////////////////////////////////////////////
  29
  30 #include <Riostream.h>
  31 #include <stdlib.h>
  32
  33 #include <TGeometry.h>
  34 #include <TLorentzVector.h>
  35 #include <TMath.h>
  36 #include <TNode.h>
  37 #include <TTUBE.h>
  38 #include <TVirtualMC.h>
  39
  40 #include "AliMagF.h"
  41 #include "AliRun.h"
  42 #include "AliSTARThit.h"
  43 #include "AliSTARTv1.h"
  44 #include "AliMC.h"
  45
  46 ClassImp(AliSTARTv1)
  47
  48 //--------------------------------------------------------------------
  49 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
  50  AliSTART(name,title)
  51 {
  52   //
  53   // Standart constructor for START Detector version 0
  54   //
  55   fIdSens1=0;
  56 //  setBufferSize(128000);
  57 }
  58 //-------------------------------------------------------------------------
  59 void AliSTARTv1::CreateGeometry()
  60 {
  61   //
  62   // Create the geometry of START Detector version 0
  63   //
  64   // begin Html
  65   /*
  66    <img src="gif/AliSTARTv0.gif">
  67   */
  68   //
  69
  70
  71   Int_t *idtmed = fIdtmed->GetArray();
  72
  73   Int_t is;
  74   Int_t idrotm[999];
  75   Float_t x,y,z;
  76
  77   Float_t pstartR[18]={0., 360., 5.,
  78                        -76.5+0.00+69.7, 4.25, 10.,
  79                        -76.5+6.05+69.7, 4.5, 10.,
  80                        -76.5+8.05+69.7, 4.5, 10.,
  81                        -76.5+8.05+69.7, 5.1, 10.,
  82                        -62.9+0.00+69.7, 5.1, 10.};
  83
  84   Float_t pstart[3]={4.3, 10.,6.8};
  85   Float_t pinstart[3]={0.,1.6,6.5};
  86   Float_t ppmt[3]={0.,1.3,3.5};
  87
  88   Float_t preg[3]={0.,0.875,0.005}; //dobavil bogdanov
  89   //  Float_t pdes[3]={0.875,1.3,0.005}; //dobavil bogdanov
  90
  91   Float_t pdivider[3]={0.,1.2,1.75};
  92   Float_t pdiv2[3]={0.,1.2,1.25};
  93   Float_t pdiv1[3]={0.6,1.2,0.5};
  94   Float_t ptop[3]={0.,1.3,1.5};
  95   Float_t pbot[3]={0.6,1.2,0.1};
  96   Float_t pglass[3]={1.2,1.3,2.};
  97   Float_t pcer[3]={0.9,1.1,0.09};
  98   Float_t psteel[3]={0.9,1.1,0.01};
  99   Float_t ppins[3]={0.6,1.2,0.014};
 100   Float_t phole[3]={0.6,1.2,0.015};
 101   Float_t pknob[3]={0.5,0.6,0.4};
 102   Float_t pknob_vac[3]={0.,0.5,0.4};
 103   Float_t pknob_bot[3]={0.,0.6,0.05};
 104   Float_t pribber[3] = {0.,1.2,2.413/2.};
 105   Float_t presist[3] = {0.,1.2,0.087/2.};
 106   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
 107   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
 108   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
 109   Float_t psupport4[3] = {0,1.6,0.05};// dyrki dlia feu v zadnej kryshke Air
 110   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
 111   Float_t psupport6[3] = {0,1.5,0.05}; //kryshechka stakanchika  Al
 112   Float_t psupport7[3] = {1.5,1.6,0.6}; //kolechko snaruzhu stakanchika Al
 113   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
 114     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
 115   Float_t ppcon[70];
 116     ppcon[0]  =   0;
 117     ppcon[1]  = 360;
 118     ppcon[2]  =  13;
 119 //  1:
 120     ppcon[3]  =  14.1/2;
 121     ppcon[4]  =   4.4;
 122     ppcon[5]  =   4.5;
 123 //  2
 124     ppcon[6]  = ppcon[3]+1.;
 125     ppcon[7]  =   4.4;
 126     ppcon[8]  =   4.5;
 127 //  3
 128     ppcon[9]  = ppcon[6];
 129     ppcon[10] =   4.4;
 130     ppcon[11] =   5.1;
 131
 132 //  4
 133
 134     ppcon[12]  = ppcon[9]+0.1;
 135     ppcon[13] =   4.4;
 136     ppcon[14] =   5.1;
 137 //  5
 138
 139     ppcon[15]  = ppcon[12];
 140     ppcon[16] =   4.9;
 141     ppcon[17] =   5.1;
 142
 143 //  6
 144     ppcon[18]  = ppcon[15]+7.05;
 145     ppcon[19] =   4.9;
 146     ppcon[20] =   5.1;
 147
 148 //  7
 149     ppcon[21]  = ppcon[18];
 150     ppcon[22] =   4.9;
 151     ppcon[23] =   5.1;
 152
 153 /// 8
 154     ppcon[24]  = ppcon[21]+0.01;
 155     ppcon[25] =   3.15;
 156     ppcon[26] =   3.25;
 157
 158 /// 9
 159     ppcon[27]  = ppcon[24];
 160     ppcon[28] =   3.15;
 161     ppcon[29] =   3.25;
 162
 163 //  10
 164     ppcon[30]  = ppcon[27]+4.5;
 165     ppcon[31] =   3.15;
 166     ppcon[32] =   3.25;
 167
 168 //  11
 169     ppcon[33] = ppcon[30];
 170     ppcon[34] =   3.15;
 171     ppcon[35] =   3.25;
 172
 173 //  12
 174     ppcon[36]  = ppcon[33];
 175     ppcon[37] =   3.15;
 176     ppcon[38] =   7.6;
 177
 178 //  13
 179     ppcon[39]  = ppcon[33]+0.4;
 180     ppcon[40] =   3.15;
 181     ppcon[41] =   7.6;
 182
 183 //  14
 184 //    ppcon[39]  = ppcon[36];
 185 //    ppcon[40] =   3.15;
 186 //    ppcon[41] =   7.6;
 187
 188     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
 189     z=-69.7;//-14.1/2;
 190     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
 191
 192
 193    Float_t zdetRight=69.7,zdetLeft=350;
 194  //-------------------------------------------------------------------
 195  //  START volume
 196  //-------------------------------------------------------------------
 197
 198
 199     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
 200     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
 201     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetRight-pstart[2],idrotm[901],"ONLY");
 202     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetLeft+pstart[2],0,"ONLY");
 203
 204 //START interior
 205     gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
 206     gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
 207     gMC->Gsvolu("0DIV","TUBE",idtmed[kVac],pdivider,3);
 208     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
 209     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
 210     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
 211     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
 212     gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
 213     cout<<" 0Su6 >> "<<psupport5[0]<<" "<<psupport5[1]<<" "<<psupport5[2]<<endl;
 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 angel  = 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 * angel);
 227         y = 6.5 * TMath::Cos(is * angel);
 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
 243
 244    x=0;
 245    y=0;
 246    z=-pinstart[2]+ppmt[2]+2.*psupport6[2]+0.1;
 247    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
 248    z=z+pdivider[2]+ppmt[2];
 249    gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
 250
 251    // PMT
 252
 253    // Entry window (glass)
 254    gMC->Gsvolu("0TOP","TUBE",idtmed[kGlass],ptop,3); //glass
 255    //   gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
 256    z=-ppmt[2]+ptop[2];
 257    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
 258    //     printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
 259
 260    //Fotokatod
 261
 262    gMC->Gsvolu ("0REG", "TUBE", idtmed[kGlass], preg, 3); //dobavil bogdanov(AliSTARTv2)
 263    z = -ppmt[2] + 2 * ptop[2] + preg[2]; //dobavil bogdanov(AliSTARTv2)
 264    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); //dobavil bogdanov(AliSTARTv2)
 265
 266    // Bottom glass
 267    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
 268    z=ppmt[2]-pbot[2];
 269    if(fDebug) printf("%s: Z bottom %f\n",ClassName(),z);
 270    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
 271    // Side cylinder glass
 272    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
 273    z=ppmt[2]-pglass[2];
 274    //      printf("Z glass %f\n",z);
 275    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
 276    //PMT electrodes support structure
 277    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
 278    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
 279    z=-ppmt[2]+2*ptop[2]+0.3;;
 280    //      printf("Z Cer 1 %f\n",z);
 281    for (is=1; is<=15; is++)
 282      {
 283        z=z+psteel[2]+pcer[2];
 284        gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
 285        z=z+psteel[2]+pcer[2];
 286        gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
 287      }
 288
 289    // Divider
 290    // Knob at the bottom of PMT baloon
 291
 292    gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
 293    z=-pdivider[2]+pknob[2];
 294    //      printf("zknob %f\n",z);
 295    gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
 296    gMC->Gsvolu("0KB","TUBE",idtmed[kGlass],pknob_bot,3);
 297    z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
 298    //      printf(knobbot %f\n",z);
 299    gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
 300    gMC->Gsvolu("0VAC","TUBE",idtmed[kVac],pknob_vac,3);
 301    z=-pdivider[2]+pknob_vac[2];
 302    //      printf("knobvac %f\n",z);
 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,"ONLY"); //zadnaiai kryshka
 337    //Dyrki dlia feu v zadnej kryshke
 338    z=0;
 339
 340    for (is=1; is<=12; is++)
 341      {
 342        x=6.5*TMath::Sin(is*angel);
 343        y=6.5 *TMath::Cos(is*angel);
 344        gMC->Gspos("0SU5",is+12,"0SU4",x,y,z,0,"ONLY");
 345
 346      }
 347
 348    //Support  right side
 349
 350    z=-pstart[2]+psupport1[2]+0.1;
 351    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 352    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
 353    z=-pstart[2]+psupport3[2]+0.1;
 354    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
 355    z=-pstart[2]+2.*psupport1[2]+0.1;
 356    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"ONLY"); //zadnaiai kryshka
 357    //Dyrki dlia feu v zadnej kryshke
 358    z=0;
 359
 360    for (is=1; is<=12; is++)
 361      {
 362        x=(6.5+7.8*TMath::Tan(5.4*3.1415/180)) *TMath::Sin(is*angel);
 363        y=(6.5+7.8*TMath::Tan(5.4*3.1415/180)) *TMath::Cos(is*angel);
 364        gMC->Gspos("0SU5",is,"0SU4",x,y,z,0,"ONLY");
 365
 366      }
 367
 368    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
 369    z=-pinstart[2]+psupport6[2];
 370    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
 371
 372    z=pinstart[2]-psupport7[2];
 373    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
 374
 375
 376    Float_t par[3];
 377    par[0]=4.4;
 378    par[1]=4.5;
 379    par[2]=0.5;
 380    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
 381    z=ppcon[3]+par[2];
 382    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
 383    z += par[2];
 384    par[0]=4.4;
 385    par[1]=5.1;
 386    par[2]=0.05;
 387    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
 388    z += par[2];
 389    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
 390    z=z+par[2];
 391    par[0]=4.9;
 392    par[1]=5.0;
 393    par[2]=6.9/2;
 394     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
 395     z += par[2];
 396     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
 397     z += par[2];
 398     /*
 399     Float_t parC[5];
 400     parC[0]=0.25;
 401     parC[1]=5.1;
 402     parC[2]=5.2;
 403     parC[3]=5.5;
 404     parC[4]=5.6;
 405     gMC->Gsvolu("0SC3","CONE",idtmed[kC],parC,5);
 406     z += parC[0];
 407     gMC->Gspos("0SC3",1,"0SUP",0,0,z,0,"ONLY");
 408     z += parC[0];
 409     par[0]=5
 410 .5;
 411     par[1]=5.6;
 412     par[2]=1.2/2;
 413     gMC->Gsvolu("0SC4","TUBE",idtmed[kC],par,3);
 414     z += par[2];
 415     gMC->Gspos("0SC4",1,"0SUP",0,0,z,0,"ONLY");
 416     par[0]=5.1;
 417     par[1]=5.5;
 418     par[2]=1.2/2;
 419     gMC->Gsvolu("0SA0","TUBE",idtmed[kAl],par,3);
 420     gMC->Gspos("0SA0",1,"0SUP",0,0,z,0,"ONLY");
 421     //gvozdi dlia skruchivaniia Al i C parts
 422     par[0]=5.75;
 423     par[1]=5.78;
 424     gMC->Gsvolu("0SN1","TUBE",idtmed[kSteel],par,3);
 425     gMC->Gspos("0SN1",1,"0SUP",0,0,z,0,"ONLY");
 426     z += par[2];
 427     */
 428     par[0]=3.15;
 429     par[1]=4.9;
 430     par[2]=0.1/2;
 431     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
 432
 433     z += par[2];
 434     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
 435     z=z+par[2];
 436     par[0]=3.15;
 437     par[1]=3.16;
 438     par[2]=4.5/2;
 439     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
 440     z += par[2];
 441     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
 442     z=z+par[2];
 443     par[0]=3.16; // eta chast' prikruchena k absorberu
 444     par[1]=7.5;
 445     par[2]=0.2;
 446     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
 447     z += par[2];
 448     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
 449     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
 450     par[1]=7.5;
 451     par[2]=0.01;
 452     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
 453     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
 454
 455
 456 }
 457 //------------------------------------------------------------------------
 458 void AliSTARTv1::CreateMaterials()
 459 {
 460    Int_t isxfld   = gAlice->Field()->Integ();
 461    Float_t sxmgmx = gAlice->Field()->Max();
 462    Float_t a,z,d,radl,absl,buf[1];
 463    Int_t nbuf;
 464    Int_t *idtmed = fIdtmed->GetArray();
 465
 466 // AIR
 467
 468    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
 469    Float_t zAir[4]={6.,7.,8.,18.};
 470    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 471    Float_t dAir = 1.20479E-3;
 472
 473 // Scintillator CH
 474    Float_t ascin[2]={1.01,12.01};
 475    Float_t zscin[2]={1,6};
 476    Float_t wscin[2]={1,1};
 477    Float_t denscin=1.03;
 478 //Lucite C(CH3)CO2CH3
 479    Float_t alucite[3]={1.01,12.01,15.999};
 480    Float_t zlucite[3]={1,6,8};
 481    Float_t wlucite[3]={8,5,2};
 482    Float_t denlucite=1.16;
 483  // PMT glass SiO2
 484    Float_t aglass[2]={28.0855,15.9994};
 485    Float_t zglass[2]={14.,8.};
 486    Float_t wglass[2]={1.,2.};
 487    Float_t dglass=2.65;
 488 // Ceramic   97.2% Al2O3 , 2.8% SiO2
 489    Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
 490    Float_t aal2o3[2]  = { 26.981539,15.9994 };
 491    Float_t zal2o3[2]  = { 13.,8. };
 492    Float_t wal2o3[2]  = { 2.,3. };
 493    Float_t denscer  = 3.6;
 494
 495 // Brass 80% Cu, 20% Zn
 496    Float_t abrass[2] = {63.546,65.39};
 497    Float_t zbrass[2] = {29,30};
 498    Float_t wbrass[2] = {0.8,0.2};
 499    Float_t denbrass=8.96;
 500
 501 //Ribber C6H12S
 502    Float_t aribber[3] = {12.,1.,32.};
 503    Float_t zribber[3] = {6.,1.,16.};
 504    Float_t wribber[3] = {6.,12.,1.};
 505    Float_t denribber=0.8;
 506 // Support inside
 507    Float_t asupport[2] = {12.,1.};
 508    Float_t zsupport[2] = {6.,1.};
 509    Float_t wsupport[2] = {1.,1.};
 510    Float_t densupport=0.1;
 511
 512 //*** Definition Of avaible START materials ***
 513    AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
 514    AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
 515    AliMixture(2, "START Air$", aAir, zAir, dAir,4,wAir);
 516    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
 517    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
 518
 519    AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
 520    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
 521    char namate[21]="";
 522    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
 523    acer[0]=a;
 524    zcer[0]=z;
 525    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
 526    acer[1]=a;
 527    zcer[1]=z;
 528
 529 // Definition Cherenkov parameters
 530   const Int_t NUMENTRIES = 32;
 531
 532  Float_t ppckov[NUMENTRIES] =
 533             { 2.034E-9, 2.068E-9, 2.103E-9, 2.139E-9,
 534               2.177E-9, 2.216E-9, 2.256E-9, 2.298E-9,
 535               2.341E-9, 2.386E-9, 2.433E-9, 2.481E-9,
 536               2.532E-9, 2.585E-9, 2.640E-9, 2.697E-9,
 537               2.757E-9, 2.820E-9, 2.885E-9, 2.954E-9,
 538               3.026E-9, 3.102E-9, 3.181E-9, 3.265E-9,
 539               3.353E-9, 3.446E-9, 3.545E-9, 3.649E-9,
 540               3.760E-9, 3.877E-9, 4.002E-9, 4.136E-9 };
 541
 542  Float_t rindex_qwarz[NUMENTRIES] =
 543             { 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
 544               1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
 545               1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
 546               1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
 547               1.458, 1.458, 1.458, 1.458 };
 548
 549  Float_t rindex_air[NUMENTRIES] =
 550             { 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
 551               1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
 552               1., 1., 1., 1. };
 553
 554     Float_t effic_all[NUMENTRIES] =
 555             { 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
 556               1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
 557               1., 1., 1., 1. };
 558
 559  Float_t absor_air[NUMENTRIES] =
 560             { 200., 200., 200., 200., 200., 200., 200.,
 561               200., 200., 200., 200., 200., 200., 200.,
 562               200., 200., 200., 200., 200., 200., 200.,
 563               200., 200., 200., 200., 200., 200., 200.,
 564               200., 200., 200., 200. };
 565
 566  Float_t absor_qwarz[NUMENTRIES] =
 567             { 2000., 2000., 2000., 2000., 2000., 2000., 2000.,
 568               2000., 2000., 2000., 2000., 2000., 2000., 2000.,
 569               2000., 2000., 2000., 2000., 2000., 2000., 2000.,
 570               2000., 2000., 2000., 2000., 2000., 2000., 2000.,
 571               2000., 2000., 2000., 2000. };
 572
 573    AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
 574    AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 575    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
 576
 577    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
 578    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
 579    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 580
 581
 582    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 583    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 584    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 585    AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 586    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 587    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 588    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 589    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 590    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 591    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 592    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 593    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 594
 595
 596    gMC->SetCerenkov (idtmed[kGlass], NUMENTRIES, ppckov, absor_qwarz, effic_all, rindex_qwarz);
 597    gMC->SetCerenkov (idtmed[kAir], NUMENTRIES, ppckov, absor_air, effic_all, rindex_air);
 598    if(fDebug) cout<<ClassName()<<": ++++++++++++++Medium set++++++++++"<<endl;
 599
 600 }
 601 //---------------------------------------------------------------------
 602 void AliSTARTv1::DrawDetector()
 603 {
 604 //
 605 // Draw a shaded view of the Forward multiplicity detector version 0
 606 //
 607
 608   //Set ALIC mother transparent
 609   gMC->Gsatt("ALIC","SEEN",0);
 610   //
 611   //Set volumes visible
 612   //  gMC->Gsatt("0ST","SEEN",0);
 613   gMC->Gsatt("0INS","SEEN",0);
 614   gMC->Gsatt("0PMT","SEEN",1);
 615   gMC->Gsatt("0DIV","SEEN",1);
 616   //
 617   gMC->Gdopt("hide","off");
 618   gMC->Gdopt("shad","on");
 619   gMC->SetClipBox(".");
 620   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 621   gMC->DefaultRange();
 622   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
 623   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
 624   gMC->Gdhead(1111,"T-Zero detector");
 625   gMC->Gdopt("hide","off");
 626 }
 627
 628 //-------------------------------------------------------------------
 629 void AliSTARTv1::Init()
 630 {
 631 // Initialises version 0 of the Forward Multiplicity Detector
 632 //
 633 //Int_t *idtmed  = gAlice->Idtmed();
 634   AliSTART::Init();
 635   fIdSens1=gMC->VolId("0REG");
 636   if(fDebug) printf("%s: *** START version 0 initialized ***\n",ClassName());
 637
 638 }
 639
 640 //-------------------------------------------------------------------
 641
 642 void AliSTARTv1::StepManager()
 643 {
 644   //
 645   // Called for every step in the START Detector
 646   //
 647   Int_t id,copy,copy1;
 648   static Float_t hits[7];
 649   static Float_t edep;
 650   static Int_t vol[2];
 651   TLorentzVector pos;
 652
 653   TClonesArray &lhits = *fHits;
 654
 655   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 656   //  Float_t charge = gMC->TrackCharge();
 657   //  if(TMath::Abs(charge)<=0.) return; //take only charged particles
 658
 659 // If particles is photon then ...
 660
 661   if (gMC->TrackPid() == 50000050)
 662   {
 663   id=gMC->CurrentVolID(copy);
 664
 665
 666    // Check the sensetive volume
 667   if(id==fIdSens1 ) {
 668     if(gMC->IsTrackEntering()) {
 669       gMC->CurrentVolOffID(2,copy);
 670       vol[1]=copy;
 671       gMC->CurrentVolOffID(3,copy1);
 672       vol[0]=copy1;
 673
 674       gMC->TrackPosition(pos);
 675       hits[0] = pos[0];
 676       hits[1] = pos[1];
 677       hits[2] = pos[2];
 678       if(pos[2]<0) vol[0]=2;
 679       if(pos[2]>=0) vol[0]=1;
 680
 681       Float_t etot=gMC->Etot();
 682       hits[4]=etot;
 683       Int_t iPart= gMC->TrackPid();
 684       Int_t partID=gMC->IdFromPDG(iPart);
 685       hits[5]=partID;
 686       Float_t ttime=gMC->TrackTime();
 687       hits[6]=ttime*1e9;
 688       edep=0;
 689     }
 690     if(gMC->IsTrackInside())    {
 691       Float_t de=gMC->Edep();
 692       edep=edep+de;
 693     }
 694
 695     if(gMC->IsTrackExiting())   {
 696       Float_t de=gMC->Edep();
 697       edep=edep+de;
 698       hits[3]=edep*1e3;
 699
 700
 701       //      cout<<"partID"<<hits[5]<<endl;
 702       new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
 703     }
 704    }
 705   }
 706 //---------------------------------------------------------------------
 707 }
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