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 /* $Id$ */
  17
  18 /////////////////////////////////////////////////////////////////////
  19 //                                                                 //
  20 // START ( T-zero) detector  version 1                             //
  21 //
  22 //Begin Html
  23 /*
  24 <img src="gif/AliSTARTv1Class.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
  45 #include "AliSTARThit.h"
  46 #include "AliSTARTv1.h"
  47 #include "AliSTARTParameters.h"
  48
  49 #include "AliMC.h"
  50 #include "AliCDBLocal.h"
  51 #include "AliCDBStorage.h"
  52 #include "AliCDBManager.h"
  53 #include "AliCDBEntry.h"
  54
  55 ClassImp(AliSTARTv1)
  56
  57 //--------------------------------------------------------------------
  58 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
  59  AliSTART(name,title)
  60 {
  61   //
  62   // Standart constructor for START Detector version 0
  63   //
  64   fIdSens1=0;
  65   fIshunt = 2;
  66 }
  67 //_____________________________________________________________________________
  68
  69 AliSTARTv1::~AliSTARTv1()
  70 {
  71   // desctructor
  72 }
  73
  74 //-------------------------------------------------------------------------
  75 void AliSTARTv1::CreateGeometry()
  76 {
  77   //
  78   // Create the geometry of START Detector version 0
  79   //
  80   // begin Html
  81   /*
  82    <img src="gif/AliSTARTv0.gif">
  83   */
  84   //
  85
  86
  87    Int_t *idtmed = fIdtmed->GetArray();
  88
  89   AliSTARTParameters* param = AliSTARTParameters::Instance();
  90   param->Init();
  91   Float_t zdetC = param->GetZposition(0);
  92   Float_t zdetA = param->GetZposition(1);
  93
  94   Int_t is;
  95   Int_t idrotm[999];
  96   Float_t x,y,z;
  97
  98   Float_t pstartR[18]={0., 360., 5.,
  99                        -76.5+0.00+69.7, 4.25, 10.,
 100                        -76.5+6.05+69.7, 4.5, 10.,
 101                        -76.5+8.05+69.7, 4.5, 10.,
 102                        -76.5+8.05+69.7, 5.1, 10.,
 103                        -62.9+0.00+69.7, 5.1, 10.};
 104
 105   Float_t pstart[3]={4.29, 12.5,6.95};
 106   Float_t pinstart[3]={0.,1.6,6.5};
 107   Float_t ppmt[3]={0.,1.5,3.5};
 108   Float_t ptop[3]={0.,1.,1.0};
 109   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
 110   Float_t ptopout[3]={1.,1.01,1.5};
 111   Float_t pbot[3]={0.6,1.2,0.1};
 112   Float_t pglass[3]={1.2,1.3,2.};
 113   Float_t pcer[3]={0.9,1.1,1.35};
 114   Float_t psteel[3]={0.9,1.1,0.15};
 115   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
 116   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
 117   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
 118   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
 119   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
 120   Float_t psupport7[3] = {1.5,1.6,0.4}; //kolechko snaruzhu stakanchika Al
 121
 122   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
 123     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
 124   Float_t ppcon[70];
 125     ppcon[0]  =   0;
 126     ppcon[1]  = 360;
 127     ppcon[2]  =  13;
 128 //  1:
 129     ppcon[3]  =  14.1/2;
 130     ppcon[4]  =   4.4;
 131     ppcon[5]  =   4.5;
 132 //  2
 133     ppcon[6]  = ppcon[3]+1.;
 134     ppcon[7]  =   4.4;
 135     ppcon[8]  =   4.5;
 136 //  3
 137     ppcon[9]  = ppcon[6];
 138     ppcon[10] =   4.4;
 139     ppcon[11] =   5.1;
 140
 141 //  4
 142
 143     ppcon[12]  = ppcon[9]+0.1;
 144     ppcon[13] =   4.4;
 145     ppcon[14] =   5.1;
 146 //  5
 147
 148     ppcon[15]  = ppcon[12];
 149     ppcon[16] =   4.9;
 150     ppcon[17] =   5.1;
 151
 152 //  6
 153 //    ppcon[18]  = ppcon[15]+7.05;
 154     ppcon[18]  = ppcon[15]+6.9;
 155     ppcon[19] =   4.9;
 156     ppcon[20] =   5.1;
 157
 158 //  7
 159     ppcon[21]  = ppcon[18];
 160     ppcon[22] =   4.9;
 161     ppcon[23] =   5.1;
 162
 163 /// 8
 164     ppcon[24]  = ppcon[21]+0.01;
 165     ppcon[25] =   3.15;
 166     ppcon[26] =   3.25;
 167
 168 /// 9
 169     ppcon[27]  = ppcon[24];
 170     ppcon[28] =   3.15;
 171     ppcon[29] =   3.25;
 172
 173 //  10
 174     ppcon[30]  = ppcon[27]+4.5;
 175     ppcon[31] =   3.15;
 176     ppcon[32] =   3.25;
 177
 178 //  11
 179     ppcon[33] = ppcon[30];
 180     ppcon[34] =   3.15;
 181     ppcon[35] =   3.25;
 182
 183 //  12
 184     ppcon[36]  = ppcon[33];
 185     ppcon[37] =   3.15;
 186     ppcon[38] =   7.6;
 187
 188 //  13
 189     ppcon[39]  = ppcon[33]+0.4;
 190     ppcon[40] =   3.15;
 191     ppcon[41] =   7.6;
 192
 193 //  14
 194 //    ppcon[39]  = ppcon[36];
 195 //    ppcon[40] =   3.15;
 196 //    ppcon[41] =   7.6;
 197
 198
 199
 200     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
 201     z=-zdetC;
 202     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
 203
 204  //-------------------------------------------------------------------
 205  //  START volume
 206  //-------------------------------------------------------------------
 207
 208
 209     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
 210     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
 211     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC-pstart[2],idrotm[901],"ONLY");
 212     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
 213
 214 //START interior
 215    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
 216    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
 217
 218     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
 219     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
 220     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
 221     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
 222     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
 223     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
 224     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
 225     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
 226
 227 // first ring: 12 units of Scintillator+PMT+divider
 228   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetC);
 229   Float_t angle  = 2 * TMath::Pi() / 12;
 230   Float_t phi[3];
 231
 232    for (is=0; is<12; is++)
 233       {
 234
 235         x = 6.5 * TMath::Sin(is * angle);
 236         y = 6.5 * TMath::Cos(is * angle);
 237
 238         phi[0] = -30 * is;
 239         phi[1] = 90 - is * 30;
 240         phi[2] = 90 - is * 30;
 241         for (Int_t j = 0; j < 3; j++)
 242           if (phi[j] < 0)  phi[j] += 360;
 243
 244         AliMatrix (idrotm[902 + is], 90.,         phi[0],
 245                    90. + theta, phi[1],
 246                    theta,       phi[2]);
 247         z=-pstart[2]+pinstart[2]+0.2;
 248         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
 249         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
 250       }
 251
 252
 253    x=0;
 254    y=0;
 255     z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
 256    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
 257    // PMT
 258
 259    // Entry window (glass)
 260    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
 261    z=-ppmt[2]+ptop[2];
 262    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
 263    //metal volume to simulate reclection
 264    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); //glass
 265    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
 266
 267    //Fotokatod
 268    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
 269    z = -ppmt[2] + 2 * ptop[2] + preg[2];
 270    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
 271   // Bottom glass
 272    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
 273    z=ppmt[2]-pbot[2];
 274    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
 275    // Side cylinder glass
 276    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
 277    z=ppmt[2]-pglass[2];
 278    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
 279    //PMT electrodes support structure
 280    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
 281    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
 282    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
 283    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
 284    z +=psteel[2]+pcer[2];
 285    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
 286
 287    //Support  left side
 288    z=-pstart[2]+psupport1[2]+0.1;
 289    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 290    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
 291    z=-pstart[2]+psupport3[2]+0.1;
 292    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
 293    z=-pstart[2]+2.*psupport1[2]-0.05;//+0.1;
 294    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
 295    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
 296    z=-pinstart[2]+psupport6[2];
 297    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
 298
 299    z=pinstart[2]-psupport7[2];
 300    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
 301
 302
 303    Float_t par[3];
 304    par[0]=4.4;
 305    par[1]=4.5;
 306    par[2]=0.5;
 307    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
 308    z=ppcon[3]+par[2];
 309    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
 310    z += par[2];
 311    par[0]=4.4;
 312    par[1]=5.1;
 313    par[2]=0.05;
 314    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
 315    z += par[2];
 316    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
 317    z=z+par[2];
 318    par[0]=4.9;
 319    par[1]=5.0;
 320    par[2]=6.9/2;
 321     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
 322     z += par[2];
 323     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
 324     z += par[2];
 325
 326      par[0]=3.15;
 327     par[1]=4.9;
 328     par[2]=0.1/2;
 329     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
 330
 331     z += par[2];
 332     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
 333     z=z+par[2];
 334     par[0]=3.15;
 335     par[1]=3.16;
 336     par[2]=4.5/2;
 337     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
 338     z += par[2];
 339     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
 340     z=z+par[2];
 341     par[0]=3.16; // eta chast' prikruchena k absorberu
 342     par[1]=7.5;
 343     par[2]=0.2;
 344     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
 345     z += par[2];
 346     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
 347     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
 348     par[1]=7.5;
 349     par[2]=0.01;
 350     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
 351     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
 352
 353
 354 }
 355 //------------------------------------------------------------------------
 356 void AliSTARTv1::CreateMaterials()
 357 {
 358    Int_t isxfld   = gAlice->Field()->Integ();
 359    Float_t sxmgmx = gAlice->Field()->Max();
 360    //   Float_t a,z,d,radl,absl,buf[1];
 361    // Int_t nbuf;
 362    Int_t *idtmed = fIdtmed->GetArray();
 363
 364 // AIR
 365
 366    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
 367    Float_t zAir[4]={6.,7.,8.,18.};
 368    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 369    Float_t dAir = 1.20479E-3;
 370
 371 // Scintillator CH
 372    Float_t ascin[2]={1.01,12.01};
 373    Float_t zscin[2]={1,6};
 374    Float_t wscin[2]={1,1};
 375    Float_t denscin=1.03;
 376 //Lucite C(CH3)CO2CH3
 377    Float_t alucite[3]={1.01,12.01,15.999};
 378    Float_t zlucite[3]={1,6,8};
 379    Float_t wlucite[3]={8,5,2};
 380    Float_t denlucite=1.16;
 381  // PMT glass SiO2
 382    Float_t aglass[2]={28.0855,15.9994};
 383    Float_t zglass[2]={14.,8.};
 384    Float_t wglass[2]={1.,2.};
 385    Float_t dglass=2.65;
 386 // Ceramic   97.2% Al2O3 , 2.8% SiO2
 387    // Float_t wcer[2]={0.972,0.028};
 388    Float_t aCeramic[2]  = { 26.981539,15.9994 };
 389    Float_t zCeramic[2]  = { 13.,8. };
 390    Float_t wCeramic[2]  = { 2.,3. };
 391    Float_t denscer  = 3.6;
 392
 393 // Brass 80% Cu, 20% Zn
 394    Float_t abrass[2] = {63.546,65.39};
 395    Float_t zbrass[2] = {29,30};
 396    Float_t wbrass[2] = {0.8,0.2};
 397    Float_t denbrass=8.96;
 398
 399 //Ribber C6H12S
 400    Float_t aribber[3] = {12.,1.,32.};
 401    Float_t zribber[3] = {6.,1.,16.};
 402    Float_t wribber[3] = {6.,12.,1.};
 403    Float_t denribber=0.8;
 404 // Support inside
 405    Float_t asupport[2] = {12.,1.};
 406    Float_t zsupport[2] = {6.,1.};
 407    Float_t wsupport[2] = {1.,1.};
 408    Float_t densupport=0.1;
 409
 410 //*** Definition Of avaible START materials ***
 411    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
 412    AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
 413    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
 414    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
 415    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
 416
 417    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
 418    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
 419    /*
 420   char namate[21]="";
 421
 422    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
 423    acer[0]=a;
 424
 425    zcer[0]=z;
 426    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
 427    acer[1]=a;
 428    zcer[1]=z;
 429    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
 430    */
 431     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 432    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
 433    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
 434    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
 435    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 436    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
 437    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
 438     AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
 439    AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
 440
 441    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 442    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 443    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 444    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 445    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 446    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 447    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 448    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 449    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 450    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 451    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 452    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 453    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 454    AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 455    AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 456     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 457
 458
 459 // Definition Cherenkov parameters
 460    int i;
 461    const Int_t kNbins=31;
 462
 463    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
 464
 465    // quartz 20mm
 466    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
 467                              25.9, 25.3, 24.9, 24.5, 23.7,
 468                              23.2, 22.8, 22.4, 21.8, 21.3,
 469                              22.8, 22.1, 21.7, 21.2, 20.5,
 470                              19.9, 19.3, 18.7, 18.0, 17.1,
 471                              16.3, 15.3, 14.3, 14.3   };
 472
 473    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
 474                              4.48, 4.58, 4.69, 4.81, 4.93,
 475                              5.05, 5.19, 5.33, 5.48, 5.63,
 476                              5.8,  5.97, 6.16, 6.36, 6.57,
 477                              6.8,  7.04, 7.3,  7.58, 7.89,
 478                              8.22, 8.57, 8.97, 9.39 };
 479    /*
 480    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
 481                               0.21, 0.22, 0.23, 0.24, 0.26,
 482                               0.27, 0.29, 0.30, 0.29, 0.29,
 483                               0.28, 0.28, 0.27, 0.26, 0.25,
 484                               0.25, 0.23, 0.20, 0.19, 0.17,
 485                               0.17, 0.17, 0.2, 0.23};
 486    */
 487    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
 488   for(i=0;i<kNbins;i++)
 489     {
 490       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
 491       rindexAir[i]=0;
 492       rindexSiO2[i]=1.458; //refractive index for qwarts
 493       rindexCathodeNext[i]=0;
 494       efficAll[i]=1.;
 495
 496       //      aAbsSiO2[i]=28.5; //quartz 30mm
 497       absorAir[i]=0.3;
 498       absorbCathodeNext[i]=0;
 499
 500     }
 501
 502
 503    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
 504    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
 505    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
 506   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
 507    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
 508
 509    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
 510
 511
 512 }
 513 //---------------------------------------------------------------------
 514 void AliSTARTv1::DrawDetector()
 515 {
 516 //
 517 // Draw a shaded view of the Forward multiplicity detector version 0
 518 //
 519
 520   //Set ALIC mother transparent
 521   gMC->Gsatt("ALIC","SEEN",0);
 522   //
 523   //Set volumes visible
 524   //  gMC->Gsatt("0STR","SEEN",0);
 525   //  gMC->Gsatt("0INS","SEEN",0);
 526   // gMC->Gsatt("0PMT","SEEN",1);
 527   // gMC->Gsatt("0DIV","SEEN",1);
 528   //
 529   gMC->Gdopt("hide","off");
 530   gMC->Gdopt("shad","on");
 531   gMC->SetClipBox(".");
 532   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 533   gMC->DefaultRange();
 534   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
 535   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
 536   gMC->Gdhead(1111,"T-Zero detector");
 537   gMC->Gdopt("hide","off");
 538 }
 539
 540 //-------------------------------------------------------------------
 541 void AliSTARTv1::Init()
 542 {
 543 // Initialises version 0 of the Forward Multiplicity Detector
 544 //
 545 //Int_t *idtmed  = gAlice->Idtmed();
 546   AliSTART::Init();
 547   fIdSens1=gMC->VolId("0REG");
 548
 549    AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
 550
 551 }
 552
 553 //-------------------------------------------------------------------
 554
 555 void AliSTARTv1::StepManager()
 556 {
 557   //
 558   // Called for every step in the START Detector
 559   //
 560   Int_t id,copy,copy1;
 561   static Float_t hits[6];
 562   static Int_t vol[2];
 563   TLorentzVector pos;
 564
 565   //   TClonesArray &lhits = *fHits;
 566
 567   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 568
 569 // If particles is photon then ...
 570
 571  if (gMC->TrackPid() == 50000050)
 572   {
 573       id=gMC->CurrentVolID(copy);
 574
 575
 576       // Check the sensetive volume
 577       if(id==fIdSens1 ) {
 578         if(gMC->IsTrackEntering()) {
 579           gMC->CurrentVolOffID(2,copy);
 580           vol[1]=copy;
 581           gMC->CurrentVolOffID(3,copy1);
 582           vol[0]=copy1;
 583           gMC->TrackPosition(pos);
 584           hits[0] = pos[0];
 585           hits[1] = pos[1];
 586           hits[2] = pos[2];
 587           if(pos[2]<0) vol[0]=2;
 588           if(pos[2]>=0) vol[0]=1;
 589
 590           Float_t etot=gMC->Etot();
 591           hits[3]=etot;
 592           Int_t iPart= gMC->TrackPid();
 593           Int_t partID=gMC->IdFromPDG(iPart);
 594           hits[4]=partID;
 595           Float_t ttime=gMC->TrackTime();
 596           hits[5]=ttime*1e12;
 597           AddHit(fIshunt,vol,hits);
 598           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
 599         }
 600         /*
 601                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
 602                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
 603                gMC->IsTrackAlive(),
 604                gMC->IsTrackDisappeared(),
 605                gMC->IsTrackEntering(),
 606                gMC->IsTrackExiting(),
 607                gMC->IsTrackInside(),
 608                gMC->IsTrackOut(),
 609                gMC->IsTrackStop(),
 610                gMC->IsNewTrack());
 611         */
 612       } //sensitive
 613   } //photon
 614 }
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