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 #include "TGeoManager.h"
  41
  42 #include "AliLog.h"
  43 #include "AliMagF.h"
  44 #include "AliRun.h"
  45
  46 #include "AliSTARThit.h"
  47 #include "AliSTARTv1.h"
  48 #include "AliSTARTParameters.h"
  49
  50 #include "AliMC.h"
  51 #include "AliCDBLocal.h"
  52 #include "AliCDBStorage.h"
  53 #include "AliCDBManager.h"
  54 #include "AliCDBEntry.h"
  55
  56 ClassImp(AliSTARTv1)
  57
  58 //--------------------------------------------------------------------
  59 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
  60   AliSTART(name,title),
  61   fIdSens1(0)
  62 {
  63   //
  64   // Standart constructor for START Detector version 0
  65   //
  66   fIshunt = 2;
  67 }
  68 //_____________________________________________________________________________
  69
  70 AliSTARTv1::~AliSTARTv1()
  71 {
  72   // desctructor
  73 }
  74
  75 //-------------------------------------------------------------------------
  76 void AliSTARTv1::CreateGeometry()
  77 {
  78   //
  79   // Create the geometry of START Detector version 0
  80   //
  81   // begin Html
  82   /*
  83    <img src="gif/AliSTARTv0.gif">
  84   */
  85   //
  86
  87
  88    Int_t *idtmed = fIdtmed->GetArray();
  89    /*
  90    AliSTARTParameters* param = AliSTARTParameters::Instance();
  91    param->Init();
  92   Float_t zdetC = param->GetZposition(0);
  93   Float_t zdetA = param->GetZposition(1);
  94    */
  95    Float_t zdetC = 69.7;
  96    Float_t zdetA = 373.;
  97
  98   Int_t is;
  99   Int_t idrotm[999];
 100   Float_t x,y,z;
 101   //C T0 mother volume
 102   Float_t pstartR[18]={0., 360., 5.,
 103                        -6.8, 4.25, 10., //-76.5+0.00+69.7
 104                        -0.75 , 4.5, 10.,  // -76.5+6.05+69.7
 105                        1.25   , 4.5, 10.,  //-76.5+8.05+69.7
 106                        1.25 , 5.1, 10., //-76.5+8.05+69.7
 107                        6.8 , 5.1, 10.};  //-62.9+0.00+69.7
 108
 109   Float_t pstart[3]={4.29, 12.5,6.8};
 110   Float_t pinstart[3]={0.,1.6,6.5};
 111   Float_t ppmt[3]={0.,1.5,3.5};
 112   Float_t ptop[3]={0.,1.,1.0};
 113   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
 114   Float_t ptopout[3]={1.,1.01, 1.};  //metal air around raiator for photos reflection
 115   Float_t pbot[3]={0.6,1.2,0.1};
 116   Float_t pglass[3]={1.2,1.3,2.};
 117   Float_t pcer[3]={0.9,1.1,1.35};
 118   Float_t psteel[3]={0.9,1.1,0.15};
 119   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
 120   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
 121   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
 122   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
 123   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
 124   Float_t psupport7[3] = {1.5,1.6,0.4}; //kolechko snaruzhu stakanchika Al
 125
 126   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
 127     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
 128   Float_t ppcon[70];
 129     ppcon[0]  =   0;
 130     ppcon[1]  = 360;
 131     ppcon[2]  =  13;
 132 //  1:
 133     ppcon[3]  =  7.2; // 14.1/2;
 134     ppcon[4]  =   4.4;
 135     ppcon[5]  =   4.5;
 136 //  2
 137     ppcon[6]  = ppcon[3]+1.;
 138     ppcon[7]  =   4.4;
 139     ppcon[8]  =   4.5;
 140 //  3
 141     ppcon[9]  = ppcon[6];
 142     ppcon[10] =   4.4;
 143     ppcon[11] =   5.1;
 144
 145 //  4
 146
 147     ppcon[12]  = ppcon[9]+0.1;
 148     ppcon[13] =   4.4;
 149     ppcon[14] =   5.1;
 150 //  5
 151
 152     ppcon[15]  = ppcon[12];
 153     ppcon[16] =   4.9;
 154     ppcon[17] =   5.1;
 155
 156 //  6
 157 //    ppcon[18]  = ppcon[15]+6.9;
 158     ppcon[18]  = ppcon[15]+6.7;
 159     ppcon[19] =   4.9;
 160     ppcon[20] =   5.1;
 161
 162 //  7
 163     ppcon[21]  = ppcon[18];
 164     ppcon[22] =   4.9;
 165     ppcon[23] =   5.1;
 166
 167 /// 8
 168     ppcon[24]  = ppcon[21]+0.01;
 169     ppcon[25] =   3.15;
 170     ppcon[26] =   3.25;
 171     //   ppcon[25] =   2.25;
 172     // ppcon[26] =   2.33;
 173
 174 /// 9
 175     ppcon[27]  = ppcon[24];
 176     ppcon[28] =   ppcon[25];
 177     ppcon[29] =  ppcon[26] ;
 178
 179 //  10
 180 //    ppcon[30]  = ppcon[27]+4.5;
 181     ppcon[30]  = ppcon[27]+4.7;
 182     ppcon[31] =   2.3;
 183     ppcon[32] =  ppcon[26] ;
 184
 185 //  11
 186     ppcon[33] = ppcon[30];
 187     //    ppcon[34] =   3.15;
 188     ppcon[34] =   2.3;
 189     ppcon[35] =  ppcon[26] ;
 190
 191 //  12
 192     ppcon[36]  = ppcon[33];
 193     ppcon[37] =   ppcon[34] ;
 194     ppcon[38] =   7.6;
 195
 196     //  13
 197     ppcon[39]  = ppcon[33]+0.2;
 198     ppcon[40] =   ppcon[34] ;
 199     ppcon[41] =   7.6;
 200
 201 //  14
 202 //    ppcon[39]  = ppcon[36];
 203 //    ppcon[40] =   3.15;
 204 //    ppcon[41] =   7.6;
 205
 206
 207
 208     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
 209     //    gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,38);
 210     z=-zdetC;
 211     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
 212
 213  //-------------------------------------------------------------------
 214  //  START volume
 215  //-------------------------------------------------------------------
 216
 217
 218     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
 219     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
 220     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
 221     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
 222
 223 //START interior
 224    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
 225    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
 226
 227     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
 228     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
 229     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
 230     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
 231     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
 232     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
 233     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
 234     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
 235
 236 // first ring: 12 units of Scintillator+PMT+divider
 237   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetC);
 238   Float_t angle  = 2 * TMath::Pi() / 12;
 239   Float_t phi[3];
 240
 241    for (is=0; is<12; is++)
 242       {
 243
 244         x = 6.5 * TMath::Sin(is * angle);
 245         y = 6.5 * TMath::Cos(is * angle);
 246
 247         phi[0] = -30 * is;
 248         phi[1] = 90 - is * 30;
 249         phi[2] = 90 - is * 30;
 250         for (Int_t j = 0; j < 3; j++)
 251           if (phi[j] < 0)  phi[j] += 360;
 252
 253         AliMatrix (idrotm[902 + is], 90.,         phi[0],
 254                    90. + theta, phi[1],
 255                    theta,       phi[2]);
 256         z=-pstart[2]+pinstart[2]+0.2;
 257         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
 258         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
 259       }
 260
 261
 262    x=0;
 263    y=0;
 264     z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
 265    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
 266    // PMT
 267
 268    // Entry window (glass)
 269    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
 270    z=-ppmt[2]+ptop[2];
 271    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
 272    //"metal" air volume to simulate reclection
 273    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3);
 274    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
 275
 276    //Fotokatod
 277    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
 278    z = -ppmt[2] + 2 * ptop[2] + preg[2];
 279    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
 280   // Bottom glass
 281    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
 282    z=ppmt[2]-pbot[2];
 283    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
 284    // Side cylinder glass
 285    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
 286    z=ppmt[2]-pglass[2];
 287    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
 288    //PMT electrodes support structure
 289    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
 290    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
 291    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
 292    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
 293    z +=psteel[2]+pcer[2];
 294    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
 295
 296    //Support  left side
 297    z=-pstart[2]+psupport1[2]+0.1;
 298    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 299    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
 300    z=-pstart[2]+psupport3[2]+0.1;
 301    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
 302    z=-pstart[2]+2.*psupport1[2]-0.05;//+0.1;
 303    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
 304    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
 305    z=-pinstart[2]+psupport6[2];
 306    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
 307
 308    z=pinstart[2]-psupport7[2];
 309    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
 310
 311
 312    Float_t par[3];
 313    par[0]=4.4;
 314    par[1]=4.5;
 315    par[2]=0.5;
 316    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
 317    z=ppcon[3]+par[2];
 318    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
 319    z += par[2];
 320    par[0]=4.4;
 321    par[1]=5.1;
 322    par[2]=0.05;
 323    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
 324    z += par[2];
 325    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
 326    z=z+par[2];
 327    par[0]=4.9;
 328    par[1]=5.0;
 329    par[2]=6.7/2;
 330     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
 331     z += par[2];
 332     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
 333     z += par[2];
 334
 335     par[0]=3.15;
 336     par[1]=4.9;
 337     par[2]=0.1/2;
 338     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
 339
 340     z += par[2];
 341     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
 342     z=z+par[2];
 343     par[0]=3.15;
 344     par[1]=3.16;
 345     par[2]=4.7/2;
 346     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
 347     z += par[2];
 348     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
 349     z=z+par[2];
 350     par[0]=3.16; // eta chast' prikruchena k absorberu
 351     par[1]=7.5;
 352     par[2]=0.1;
 353     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
 354     z += par[2];
 355     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
 356     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
 357     par[1]=7.5;
 358     par[2]=0.01;
 359     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
 360     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
 361
 362
 363 }
 364 //------------------------------------------------------------------------
 365 void AliSTARTv1::AddAlignableVolumes() const
 366 {
 367   //
 368   // Create entries for alignable volumes associating the symbolic volume
 369   // name with the corresponding volume path. Needs to be syncronized with
 370   // eventual changes in the geometry.
 371   //
 372
 373   TString volPath;
 374   TString symName, sn;
 375
 376   TString vpA  = "/ALIC_1/0STL_1/0INS_";
 377   TString vpC  = "/ALIC_1/0STR_1/0INS_";
 378   TString vpInside  = "/0PMT_1/0TOP_1";
 379
 380
 381   for (Int_t imod=0; imod<24; imod++)
 382     {
 383       if (imod < 12)
 384         {volPath  = vpC; sn="START/C/PMT";}
 385       else
 386         {volPath  = vpA; sn="START/A/PMT";}
 387       volPath += imod+1;
 388       volPath += vpInside;
 389
 390       symName = sn;
 391       symName += imod+1;
 392
 393       AliDebug(2,"--------------------------------------------");
 394       AliDebug(2,Form("Alignable object %d", imod));
 395       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
 396       AliDebug(2,Form("symName=%s\n",symName.Data()));
 397       AliDebug(2,"--------------------------------------------");
 398       //  gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data());
 399       if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
 400         AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
 401                       symName.Data(),volPath.Data()));
 402
 403     }
 404 }
 405 //------------------------------------------------------------------------
 406 void AliSTARTv1::CreateMaterials()
 407 {
 408    Int_t isxfld   = gAlice->Field()->Integ();
 409    Float_t sxmgmx = gAlice->Field()->Max();
 410    //   Float_t a,z,d,radl,absl,buf[1];
 411    // Int_t nbuf;
 412    Int_t *idtmed = fIdtmed->GetArray();
 413
 414 // AIR
 415
 416    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
 417    Float_t zAir[4]={6.,7.,8.,18.};
 418    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 419    Float_t dAir = 1.20479E-3;
 420
 421 // Scintillator CH
 422    Float_t ascin[2]={1.01,12.01};
 423    Float_t zscin[2]={1,6};
 424    Float_t wscin[2]={1,1};
 425    Float_t denscin=1.03;
 426 //Lucite C(CH3)CO2CH3
 427    Float_t alucite[3]={1.01,12.01,15.999};
 428    Float_t zlucite[3]={1,6,8};
 429    Float_t wlucite[3]={8,5,2};
 430    Float_t denlucite=1.16;
 431  // PMT glass SiO2
 432    Float_t aglass[2]={28.0855,15.9994};
 433    Float_t zglass[2]={14.,8.};
 434    Float_t wglass[2]={1.,2.};
 435    Float_t dglass=2.65;
 436 // Ceramic   97.2% Al2O3 , 2.8% SiO2
 437    // Float_t wcer[2]={0.972,0.028};
 438    Float_t aCeramic[2]  = { 26.981539,15.9994 };
 439    Float_t zCeramic[2]  = { 13.,8. };
 440    Float_t wCeramic[2]  = { 2.,3. };
 441    Float_t denscer  = 3.6;
 442
 443 // Brass 80% Cu, 20% Zn
 444    Float_t abrass[2] = {63.546,65.39};
 445    Float_t zbrass[2] = {29,30};
 446    Float_t wbrass[2] = {0.8,0.2};
 447    Float_t denbrass=8.96;
 448
 449 //Ribber C6H12S
 450    Float_t aribber[3] = {12.,1.,32.};
 451    Float_t zribber[3] = {6.,1.,16.};
 452    Float_t wribber[3] = {6.,12.,1.};
 453    Float_t denribber=0.8;
 454 // Support inside
 455    Float_t asupport[2] = {12.,1.};
 456    Float_t zsupport[2] = {6.,1.};
 457    Float_t wsupport[2] = {1.,1.};
 458    Float_t densupport=0.1;
 459
 460 //*** Definition Of avaible START materials ***
 461    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
 462    AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
 463    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
 464    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
 465    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
 466
 467    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
 468    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
 469    /*
 470   char namate[21]="";
 471
 472    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
 473    acer[0]=a;
 474
 475    zcer[0]=z;
 476    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
 477    acer[1]=a;
 478    zcer[1]=z;
 479    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
 480    */
 481     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 482    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
 483    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
 484    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
 485    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 486    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
 487    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
 488     AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
 489    AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
 490
 491    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 492    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 493    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 494    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 495    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 496    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 497    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 498    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 499    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 500    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 501    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 502    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 503    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 504    AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 505    AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 506     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 507
 508
 509 // Definition Cherenkov parameters
 510    int i;
 511    const Int_t kNbins=31;
 512
 513    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
 514
 515    // quartz 20mm
 516    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
 517                              25.9, 25.3, 24.9, 24.5, 23.7,
 518                              23.2, 22.8, 22.4, 21.8, 21.3,
 519                              22.8, 22.1, 21.7, 21.2, 20.5,
 520                              19.9, 19.3, 18.7, 18.0, 17.1,
 521                              16.3, 15.3, 14.3, 14.3   };
 522
 523    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
 524                              4.48, 4.58, 4.69, 4.81, 4.93,
 525                              5.05, 5.19, 5.33, 5.48, 5.63,
 526                              5.8,  5.97, 6.16, 6.36, 6.57,
 527                              6.8,  7.04, 7.3,  7.58, 7.89,
 528                              8.22, 8.57, 8.97, 9.39 };
 529    /*
 530    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
 531                               0.21, 0.22, 0.23, 0.24, 0.26,
 532                               0.27, 0.29, 0.30, 0.29, 0.29,
 533                               0.28, 0.28, 0.27, 0.26, 0.25,
 534                               0.25, 0.23, 0.20, 0.19, 0.17,
 535                               0.17, 0.17, 0.2, 0.23};
 536    */
 537    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
 538   for(i=0;i<kNbins;i++)
 539     {
 540       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
 541       rindexAir[i]=0;
 542       rindexSiO2[i]=1.458; //refractive index for qwarts
 543       rindexCathodeNext[i]=0;
 544       efficAll[i]=1.;
 545
 546       //      aAbsSiO2[i]=28.5; //quartz 30mm
 547       absorAir[i]=0.3;
 548       absorbCathodeNext[i]=0;
 549
 550     }
 551
 552
 553    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
 554    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
 555    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
 556   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
 557    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
 558
 559    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
 560
 561
 562 }
 563 //---------------------------------------------------------------------
 564 void AliSTARTv1::DrawDetector()
 565 {
 566 //
 567 // Draw a shaded view of the Forward multiplicity detector version 0
 568 //
 569
 570   //Set ALIC mother transparent
 571   gMC->Gsatt("ALIC","SEEN",0);
 572   //
 573   //Set volumes visible
 574   //  gMC->Gsatt("0STR","SEEN",0);
 575   //  gMC->Gsatt("0INS","SEEN",0);
 576   // gMC->Gsatt("0PMT","SEEN",1);
 577   // gMC->Gsatt("0DIV","SEEN",1);
 578   //
 579   gMC->Gdopt("hide","off");
 580   gMC->Gdopt("shad","on");
 581   gMC->SetClipBox(".");
 582   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 583   gMC->DefaultRange();
 584   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
 585   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
 586   gMC->Gdhead(1111,"T-Zero detector");
 587   gMC->Gdopt("hide","off");
 588 }
 589
 590 //-------------------------------------------------------------------
 591 void AliSTARTv1::Init()
 592 {
 593 // Initialises version 0 of the Forward Multiplicity Detector
 594 //
 595 //Int_t *idtmed  = gAlice->Idtmed();
 596   AliSTART::Init();
 597   fIdSens1=gMC->VolId("0REG");
 598
 599    AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
 600
 601 }
 602
 603 //-------------------------------------------------------------------
 604
 605 void AliSTARTv1::StepManager()
 606 {
 607   //
 608   // Called for every step in the START Detector
 609   //
 610   Int_t id,copy,copy1;
 611   static Float_t hits[6];
 612   static Int_t vol[2];
 613   TLorentzVector pos;
 614
 615   //   TClonesArray &lhits = *fHits;
 616
 617   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 618
 619
 620     // If particles is photon then ...
 621
 622  if (gMC->TrackPid() == 50000050)
 623   {
 624       id=gMC->CurrentVolID(copy);
 625
 626
 627       // Check the sensetive volume
 628       if(id==fIdSens1 ) {
 629         if(gMC->IsTrackEntering()) {
 630           gMC->CurrentVolOffID(2,copy);
 631           vol[1]=copy;
 632           gMC->CurrentVolOffID(3,copy1);
 633           vol[0]=copy1;
 634           gMC->TrackPosition(pos);
 635           hits[0] = pos[0];
 636           hits[1] = pos[1];
 637           hits[2] = pos[2];
 638           if(pos[2]<0) vol[0]=2;
 639           if(pos[2]>=0) vol[0]=1;
 640
 641           Float_t etot=gMC->Etot();
 642           hits[3]=etot;
 643           Int_t iPart= gMC->TrackPid();
 644           Int_t partID=gMC->IdFromPDG(iPart);
 645           hits[4]=partID;
 646           Float_t ttime=gMC->TrackTime();
 647           hits[5]=ttime*1e12;
 648           AddHit(fIshunt,vol,hits);
 649           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
 650         }
 651         /*
 652                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
 653                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
 654                gMC->IsTrackAlive(),
 655                gMC->IsTrackDisappeared(),
 656                gMC->IsTrackEntering(),
 657                gMC->IsTrackExiting(),
 658                gMC->IsTrackInside(),
 659                gMC->IsTrackOut(),
 660                gMC->IsTrackStop(),
 661                gMC->IsNewTrack());
 662         */
 663       } //sensitive
 664   } //photon
 665 }
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