T0/AliT0v1.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 1                             //
  21 //
  22 //Begin Html
  23 /*
  24 <img src="gif/AliT0v1Class.gif">
  25 */
  26 //End Html
  27 //                                                                  //
  28 //                                                                  //
  29 //////////////////////////////////////////////////////////////////////
  30
  31 #include <Riostream.h>
  32 #include <stdlib.h>
  33
  34 #include <TLorentzVector.h>
  35 #include <TMath.h>
  36 #include <TVirtualMC.h>
  37 #include "TGeoManager.h"
  38 #include "TGeoMatrix.h"
  39 #include "TGeoPcon.h"
  40 #include "TGeoTube.h"
  41 #include "TGeoCompositeShape.h"
  42 #include <TGraph.h>
  43
  44 #include "AliLog.h"
  45 #include "AliMagF.h"
  46 #include "AliRun.h"
  47
  48 #include "AliT0hit.h"
  49 #include "AliT0v1.h"
  50 #include "AliT0Parameters.h"
  51
  52 #include "AliMC.h"
  53 #include "AliCDBLocal.h"
  54 #include "AliCDBStorage.h"
  55 #include "AliCDBManager.h"
  56 #include "AliCDBEntry.h"
  57
  58 ClassImp(AliT0v1)
  59
  60
  61 //--------------------------------------------------------------------
  62 AliT0v1::AliT0v1():  AliT0(),
  63                      fIdSens1(0),
  64                      fEffPMT(0x0)
  65
  66 {
  67   //
  68   // Standart constructor for T0 Detector version 0
  69 }
  70 //--------------------------------------------------------------------
  71 AliT0v1::AliT0v1(const char *name, const char *title):
  72   AliT0(name,title),
  73   fIdSens1(0),
  74   fEffPMT(0x0)
  75
  76 {
  77   //
  78   // Standart constructor for T0 Detector version 0
  79   //
  80   fIshunt = 2;
  81   AliT0Parameters* param = AliT0Parameters::Instance();
  82   for (Int_t i=0; i<24; i++){
  83     TGraph* grEff = param ->GetPMTeff(i);
  84     fEffPMT.AddAtAndExpand(grEff,i);
  85   }
  86 }
  87 //_____________________________________________________________________________
  88
  89 AliT0v1::~AliT0v1()
  90 {
  91   // desctructor
  92 }
  93
  94 //-------------------------------------------------------------------------
  95 void AliT0v1::CreateGeometry()
  96 {
  97   //
  98   // Create the geometry of T0 Detector version 0
  99   //
 100   // begin Html
 101   /*
 102    <img src="gif/AliT0v0.gif">
 103   */
 104   //
 105
 106
 107    Int_t *idtmed = fIdtmed->GetArray();
 108    /*
 109    AliT0Parameters* param = AliT0Parameters::Instance();
 110    param->Init();
 111   Float_t zdetC = param->GetZposition(0);
 112   Float_t zdetA = param->GetZposition(1);
 113    */
 114    Float_t zdetC = 69.7;
 115    Float_t zdetA = 373.;
 116
 117   Int_t is;
 118   Int_t idrotm[999];
 119   Double_t x,y,z;
 120   //C T0 mother volume
 121   Float_t pstartR[18]={0., 360., 5.,
 122                        -6.8, 4.25, 10., //-76.5+0.00+69.7
 123                        //  -0.75 , 4.45, 10.,  // -76.5+6.05+69.7
 124                        //  1.25   , 4.45, 10.,  //-76.5+8.05+69.7
 125                        -0.75 , 4.5, 10.,  // -76.5+6.05+69.7
 126                        1.25   , 4.5, 10.,  //-76.5+8.05+69.7
 127                        1.25 , 5.1, 10, //-76.5+8.05+69.7
 128                        6.8 , 5.1, 10.};  //-62.9+0.00+69.7
 129
 130   Float_t pstart[3]={4., 12.5,6.8};
 131   Float_t pinstart[3]={0.,1.45,6.5};
 132   Float_t ppmt[3]={0.,1.4,3.5};
 133   Float_t ptop[3]={0.,1.,1.0};
 134   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
 135   Float_t ptopout[3]={1.,1.01, 1.};  //metal air around raiator for photos reflection
 136   Float_t pbot[3]={0.6,1.2,0.1};
 137   Float_t pglass[3]={1.2,1.3,2.};
 138   Float_t pcer[3]={0.9,1.1,1.35};
 139   Float_t psteel[3]={0.9,1.1,0.15};
 140   Float_t psupport1[3] = {4.51,4.52,4.0};//C kozhuh vnutri
 141   Float_t psupport2[3] = {9.5,9.6,4.0};// snaruzhi  C
 142   Float_t psupport3[3] = {4.52,9.5, 0.05};//kryshki  C
 143   Float_t psupport5[3] = {1.44,1.45,6.5}; // stakanchik dlai feu  C
 144   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
 145   Float_t psupport7[3] = {1.44,1.45,0.4}; //kolechko snaruzhu stakanchika Al
 146
 147   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
 148     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
 149   Float_t ppcon[70];
 150     ppcon[0]  =   0;
 151     ppcon[1]  = 360;
 152     ppcon[2]  =  13;
 153 //  1:
 154     ppcon[3]  =  7.2;
 155     ppcon[4]  =   4.4;
 156     ppcon[5]  =   4.5;
 157 //  2
 158     ppcon[6]  = 8.2;
 159     ppcon[7]  = 4.4;
 160     ppcon[8]  = 4.5;
 161 //  3
 162     ppcon[9]  = 8.2;
 163     ppcon[10] = 4.4;
 164     ppcon[11] = 5.1;
 165
 166 //  4
 167
 168     ppcon[12] = 8.3;
 169     ppcon[13] = 4.4;
 170     ppcon[14] = 5.1;
 171 //  5
 172
 173     ppcon[15] = 8.3;
 174     ppcon[16] = 4.9;
 175     ppcon[17] = 5.1;
 176
 177 //  6
 178     ppcon[18] = 15.;
 179     ppcon[19] = 4.9;
 180     ppcon[20] = 5.1;
 181
 182 //  7
 183     ppcon[21] = 15.;
 184     ppcon[22] = 3.15  ;
 185     ppcon[23] = 5.1;
 186
 187 /// 8
 188     ppcon[24] = 15.01;
 189     ppcon[25] = 3.15;
 190     ppcon[26] = 5.1;
 191
 192 /// 9
 193     ppcon[27] = 15.01;
 194     ppcon[28] = 3.15;
 195     ppcon[29] = 3.25;
 196
 197
 198 /// 9
 199      ppcon[30] = 19.71;
 200      ppcon[31] = 3.15;
 201      ppcon[32] = 3.25;
 202 //  10
 203     ppcon[33] = 19.8;
 204     ppcon[34] = 3.15;
 205     ppcon[35] = 3.25;
 206     //  11
 207     ppcon[36] = 19.8;
 208     ppcon[37] = 3.15;
 209     ppcon[38] = 7.6;
 210
 211    //  14
 212
 213     ppcon[39] =  19.99;
 214     ppcon[40] =  3.15;
 215     ppcon[41] =  7.6;
 216
 217
 218     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
 219     z = -zdetC;
 220     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
 221
 222 //-------------------------------------------------------------------
 223  //  T0 volume
 224  //-------------------------------------------------------------------
 225
 226
 227     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
 228     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
 229     // gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
 230
 231 //T0 interior
 232    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
 233    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
 234
 235     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
 236     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
 237     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
 238     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
 239     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
 240     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
 241     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
 242     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
 243
 244
 245
 246    //non-absorber side support  and T0A !!!!!!!!
 247
 248     TGeoPcon * supPgon = new TGeoPcon("0supPgon",0.,360.,4);
 249     supPgon->DefineSection(0, 0, 4.1, 5.5);
 250     supPgon->DefineSection(1, 10.5 , 4.1, 5.5);
 251     supPgon->DefineSection(2, 10.5 , 4.1, 4.9);
 252     supPgon->DefineSection(3, 12.5 , 4.1, 4.9);
 253     TGeoTranslation *trPgon = new TGeoTranslation("0trPgon",0,0,0);
 254     trPgon->RegisterYourself();
 255
 256     TGeoVolumeAssembly * stlin = new TGeoVolumeAssembly("0STL");//empty segment
 257     TGeoVolume *ins = gGeoManager->GetVolume("0INS");
 258
 259     new TGeoTube("0HOLE", 0, 1.51, 6.5);
 260     TGeoTranslation *tr [12];
 261     Double_t angle  = 2 * TMath::Pi() / 12;
 262     Char_t nameTr[40];
 263     for (Int_t itr=0; itr<12; itr++) {
 264       sprintf (nameTr,"0TR%i",itr+1);
 265       x = 6.5 * TMath::Sin(itr * angle);
 266       y = 6.5 * TMath::Cos(itr * angle);
 267       tr[itr] = new TGeoTranslation(nameTr,x,y,6.5);
 268       tr[itr]->RegisterYourself();
 269       stlin->AddNode(ins,itr+13,tr[itr]);
 270     }
 271     TGeoCompositeShape *supsh = new TGeoCompositeShape("0supsh","0supPgon:0trPgon-(0HOLE:0TR1+0HOLE:0TR2+0HOLE:0TR3+0HOLE:0TR4+0HOLE:0TR5+0HOLE:0TR6+0HOLE:0TR7+0HOLE:0TR8+0HOLE:0TR9+0HOLE:0TR10+0HOLE:0TR11+0HOLE:0TR12)");
 272
 273     TGeoMedium *medal = gGeoManager->GetMedium("T0_Aluminium$");
 274     TGeoVolume *supA = new TGeoVolume("0SUA",supsh,medal);
 275     stlin->AddNode(supA,1,new TGeoTranslation(0,0,0));
 276
 277     TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
 278     alice->AddNode(stlin,1,new TGeoTranslation(0,0, zdetA ));
 279
 280     // T0A finished
 281
 282     //T0C
 283 // first ring: 12 units of Scintillator+PMT+divider
 284   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.6 / zdetC);
 285   Float_t phi[3];
 286    for (is=0; is<12; is++)
 287       {
 288
 289         x = 6.6 * TMath::Sin(is * angle);
 290         y = 6.6 * TMath::Cos(is * angle);
 291
 292         phi[0] = -30 * is;
 293         phi[1] = 90 - is * 30;
 294         phi[2] = 90 - is * 30;
 295         for (Int_t j = 0; j < 3; j++)
 296           if (phi[j] < 0)  phi[j] += 360;
 297
 298         AliMatrix (idrotm[902 + is], 90.,         phi[0],
 299                    90. + theta, phi[1],
 300                    theta,       phi[2]);
 301         z=-pstart[2]+pinstart[2]+0.3;
 302         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
 303   }
 304
 305    x=0;
 306    y=0;
 307    //   z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
 308    z=-pinstart[2]+ppmt[2]+0.08; //+psupport6[2];
 309    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
 310    // PMT
 311
 312    // Entry window (glass)
 313    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
 314    z=-ppmt[2]+ptop[2];
 315    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
 316    //"metal" air volume to simulate reclection
 317    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3);
 318    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
 319
 320    //Fotokatod
 321    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
 322    z = -ppmt[2] + 2 * ptop[2] + preg[2];
 323    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
 324   // Bottom glass
 325    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
 326    z=ppmt[2]-pbot[2];
 327    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
 328    // Side cylinder glass
 329    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
 330    z=ppmt[2]-pglass[2];
 331    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
 332    //PMT electrodes support structure
 333    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
 334    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
 335    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
 336    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
 337    z +=psteel[2]+pcer[2];
 338    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
 339
 340    //Support absorber (C) side
 341    z=-pstart[2]+psupport1[2];//  0.05; //0.1;
 342    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
 343    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
 344    z=-pstart[2]+psupport3[2];//  - 0.1;
 345    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
 346    z=-pstart[2]+2.*psupport1[2];//+0.1;
 347    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
 348    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
 349    z=-pinstart[2]+psupport6[2]; //-0.1;
 350    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
 351
 352    z=pinstart[2]-psupport7[2];
 353    gMC->Gspos("0SU8",1,"0SU6",0,0,z,0,"ONLY"); //Al kolechko
 354
 355
 356    Float_t par[3];
 357    par[0]=4.4;
 358    par[1]=4.5;
 359    par[2]=0.5;
 360    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
 361    z=ppcon[3]+par[2];
 362    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
 363    z += par[2];
 364    par[0]=4.4;
 365    par[1]=5.1;
 366    par[2]=0.05;
 367    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
 368    z += par[2];
 369    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
 370    z=z+par[2];
 371    par[0]=4.9;
 372    par[1]=5.0;
 373    par[2]=6.7/2;
 374     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
 375     z += par[2];
 376     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
 377     z += par[2];
 378
 379     par[0]=3.15;
 380     par[1]=4.9;
 381     par[2]=0.01/2;
 382
 383     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
 384
 385      z += par[2];
 386      //  z -= par[2];
 387     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
 388     z=z+par[2];
 389     par[0]=3.15;
 390     par[1]=3.16;
 391     par[2]=4.7/2;
 392     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
 393     z += par[2];
 394     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
 395     z=z+par[2];
 396     par[0]=3.16; // eta chast' prikruchena k absorberu
 397     par[1]=7.4;
 398     par[2]=0.01;
 399     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
 400     //   z += par[2];
 401    z = ppcon[39] - par[2];
 402     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
 403     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
 404     par[1]=7.4;
 405     par[2]=0.01;
 406     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
 407     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"MANY");
 408
 409
 410
 411
 412 }
 413 //------------------------------------------------------------------------
 414 void AliT0v1::AddAlignableVolumes() const
 415 {
 416   //
 417   // Create entries for alignable volumes associating the symbolic volume
 418   // name with the corresponding volume path. Needs to be syncronized with
 419   // eventual changes in the geometry.
 420   //
 421
 422   // TString volPath;
 423   // TString symName, sn;
 424
 425
 426
 427
 428   TString volPath;
 429   TString symName, sn;
 430
 431   TString vpA  = "/ALIC_1/0STL_1/0INS_";
 432   TString vpC  = "/ALIC_1/0STR_1/0INS_";
 433   TString vpInside  = "/0PMT_1/0TOP_1";
 434   TString vpAalign = "/ALIC_1/0STL_1";
 435   TString vpCalign = "/ALIC_1/0STR_1";
 436
 437   for (Int_t imod=0; imod<26; imod++)
 438     {
 439       if (imod < 24)
 440       {
 441        if (imod < 12)
 442          { volPath  = vpC; sn="T0/C/PMT";}
 443         else
 444           { volPath  = vpA; sn="T0/A/PMT";}
 445       volPath += imod+1;
 446       volPath += vpInside;
 447       symName = sn;
 448      symName += imod+1;
 449      }
 450      else if (imod == 24)
 451        {volPath  = vpCalign; symName="/ALIC_1/0STR_1";}
 452      else
 453        {volPath  = vpAalign; symName="/ALIC_1/0STL_1";}
 454
 455       AliDebug(2,"--------------------------------------------");
 456       AliDebug(2,Form("Alignable object %d", imod));
 457       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
 458       AliDebug(2,Form("symName=%s\n",symName.Data()));
 459       AliDebug(2,"--------------------------------------------");
 460       if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
 461        AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
 462 symName.Data(),volPath.Data()));
 463    }
 464   /*
 465   for (Int_t imod=0; imod<24; imod++)
 466     {
 467        if (imod < 12)
 468          { volPath  = vpC; sn="T0/C/PMT";}
 469         else
 470           { volPath  = vpA; sn="T0/A/PMT";}
 471       volPath += imod+1;
 472       volPath += vpInside;
 473       symName = sn;
 474       symName += imod+1;
 475
 476
 477       AliDebug(2,"--------------------------------------------");
 478       AliDebug(2,Form("Alignable object %d", imod));
 479       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
 480       AliDebug(2,Form("symName=%s\n",symName.Data()));
 481       AliDebug(2,"--------------------------------------------");
 482       if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
 483        AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
 484 symName.Data(),volPath.Data()));
 485    }
 486   */
 487 }
 488 //------------------------------------------------------------------------
 489 void AliT0v1::CreateMaterials()
 490 {
 491    Int_t isxfld   = gAlice->Field()->Integ();
 492    Float_t sxmgmx = gAlice->Field()->Max();
 493    //   Float_t a,z,d,radl,absl,buf[1];
 494    // Int_t nbuf;
 495 // AIR
 496
 497    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
 498    Float_t zAir[4]={6.,7.,8.,18.};
 499    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 500    Float_t dAir = 1.20479E-3;
 501
 502 // Scintillator CH
 503    Float_t ascin[2]={1.01,12.01};
 504    Float_t zscin[2]={1,6};
 505    Float_t wscin[2]={1,1};
 506    Float_t denscin=1.03;
 507 //Lucite C(CH3)CO2CH3
 508    Float_t alucite[3]={1.01,12.01,15.999};
 509    Float_t zlucite[3]={1,6,8};
 510    Float_t wlucite[3]={8,5,2};
 511    Float_t denlucite=1.16;
 512  // PMT glass SiO2
 513    Float_t aglass[2]={28.0855,15.9994};
 514    Float_t zglass[2]={14.,8.};
 515    Float_t wglass[2]={1.,2.};
 516    Float_t dglass=2.65;
 517 // Ceramic   97.2% Al2O3 , 2.8% SiO2
 518    // Float_t wcer[2]={0.972,0.028};
 519    Float_t aCeramic[2]  = { 26.981539,15.9994 };
 520    Float_t zCeramic[2]  = { 13.,8. };
 521    Float_t wCeramic[2]  = { 2.,3. };
 522    Float_t denscer  = 3.6;
 523
 524 // Brass 80% Cu, 20% Zn
 525    Float_t abrass[2] = {63.546,65.39};
 526    Float_t zbrass[2] = {29,30};
 527    Float_t wbrass[2] = {0.8,0.2};
 528    Float_t denbrass=8.96;
 529
 530 //Ribber C6H12S
 531    Float_t aribber[3] = {12.,1.,32.};
 532    Float_t zribber[3] = {6.,1.,16.};
 533    Float_t wribber[3] = {6.,12.,1.};
 534    Float_t denribber=0.8;
 535 // Support inside
 536    Float_t asupport[2] = {12.,1.};
 537    Float_t zsupport[2] = {6.,1.};
 538    Float_t wsupport[2] = {1.,1.};
 539    Float_t densupport=0.1;
 540
 541 //*** Definition Of avaible T0 materials ***
 542    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
 543    AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
 544    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
 545    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
 546    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
 547
 548    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
 549    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
 550    /*
 551   char namate[21]="";
 552
 553    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
 554    acer[0]=a;
 555
 556    zcer[0]=z;
 557    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
 558    acer[1]=a;
 559    zcer[1]=z;
 560    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
 561    */
 562     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 563    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
 564    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
 565    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
 566    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 567    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
 568    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
 569     AliMixture(22, "T0 Opt Air$", aAir, zAir, dAir,4,wAir);
 570    AliMixture(23, "T0 Opt Air Next$", aAir, zAir, dAir,4,wAir);
 571
 572    AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 573    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 574    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 575    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 576    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 577    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
 578    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 579    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 580    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 581    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 582    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 583    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
 584    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 585    AliMedium(17, "T0 OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 586    AliMedium(18, "T0 OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
 587     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
 588
 589    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
 590
 591
 592 }
 593 //---------------------------------------------------------------------
 594 void AliT0v1::DrawDetector()
 595 {
 596 //
 597 // Draw a shaded view of the Forward multiplicity detector version 0
 598 //
 599
 600   //Set ALIC mother transparent
 601   gMC->Gsatt("ALIC","SEEN",0);
 602   //
 603   //Set volumes visible
 604   //  gMC->Gsatt("0STR","SEEN",0);
 605   //  gMC->Gsatt("0INS","SEEN",0);
 606   // gMC->Gsatt("0PMT","SEEN",1);
 607   // gMC->Gsatt("0DIV","SEEN",1);
 608   //
 609   gMC->Gdopt("hide","off");
 610   gMC->Gdopt("shad","on");
 611   gMC->SetClipBox(".");
 612   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
 613   gMC->DefaultRange();
 614   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
 615   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
 616   gMC->Gdhead(1111,"T-Zero detector");
 617   gMC->Gdopt("hide","off");
 618 }
 619
 620 //-------------------------------------------------------------------
 621 void AliT0v1::DefineOpticalProperties()
 622 {
 623 // Optical properties definition.
 624    Int_t *idtmed = fIdtmed->GetArray();
 625 // Definition Cherenkov parameters
 626    int i;
 627    const Int_t kNbins=31;
 628
 629    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
 630
 631    // quartz 20mm
 632    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
 633                              25.9, 25.3, 24.9, 24.5, 23.7,
 634                              23.2, 22.8, 22.4, 21.8, 21.3,
 635                              22.8, 22.1, 21.7, 21.2, 20.5,
 636                              19.9, 19.3, 18.7, 18.0, 17.1,
 637                              16.3, 15.3, 14.3, 14.3   };
 638
 639    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
 640                              4.48, 4.58, 4.69, 4.81, 4.93,
 641                              5.05, 5.19, 5.33, 5.48, 5.63,
 642                              5.8,  5.97, 6.16, 6.36, 6.57,
 643                              6.8,  7.04, 7.3,  7.58, 7.89,
 644                              8.22, 8.57, 8.97, 9.39 };
 645    /*
 646    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
 647                               0.21, 0.22, 0.23, 0.24, 0.26,
 648                               0.27, 0.29, 0.30, 0.29, 0.29,
 649                               0.28, 0.28, 0.27, 0.26, 0.25,
 650                               0.25, 0.23, 0.20, 0.19, 0.17,
 651                               0.17, 0.17, 0.2, 0.23};
 652    */
 653    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
 654   for(i=0;i<kNbins;i++)
 655     {
 656       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
 657       rindexAir[i]=0;
 658       rindexSiO2[i]=1.458; //refractive index for qwarts
 659       rindexCathodeNext[i]=0;
 660       efficAll[i]=1.;
 661
 662       //      aAbsSiO2[i]=28.5; //quartz 30mm
 663       absorAir[i]=0.3;
 664       absorbCathodeNext[i]=0;
 665
 666     }
 667
 668
 669    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
 670    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
 671    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
 672   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
 673    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
 674 }
 675
 676 //-------------------------------------------------------------------
 677 void AliT0v1::Init()
 678 {
 679 // Initialises version 0 of the Forward Multiplicity Detector
 680 //
 681   AliT0::Init();
 682   fIdSens1=gMC->VolId("0REG");
 683
 684    AliDebug(1,Form("%s: *** T0 version 1 initialized ***\n",ClassName()));
 685 }
 686
 687 //-------------------------------------------------------------------
 688
 689 void AliT0v1::StepManager()
 690 {
 691   //
 692   // Called for every step in the T0 Detector
 693   //
 694   Int_t id,copy,copy1;
 695   static Float_t hits[6];
 696   static Int_t vol[2];
 697   TLorentzVector pos;
 698
 699   //   TClonesArray &lhits = *fHits;
 700
 701   if(!gMC->IsTrackAlive()) return; // particle has disappeared
 702
 703
 704     // If particles is photon then ...
 705
 706  if (gMC->TrackPid() == 50000050)
 707   {
 708       id=gMC->CurrentVolID(copy);
 709
 710
 711       // Check the sensetive volume
 712       if(id==fIdSens1 ) {
 713         if(gMC->IsTrackEntering()) {
 714             gMC->CurrentVolOffID(2,copy);
 715             vol[1]=copy;
 716             gMC->CurrentVolOffID(3,copy1);
 717             vol[0]=copy1;
 718             gMC->TrackPosition(pos);
 719             hits[0] = pos[0];
 720             hits[1] = pos[1];
 721             hits[2] = pos[2];
 722             if(pos[2]<0) vol[0]=2;
 723             if(pos[2]>=0) vol[0]=1;
 724
 725             Float_t etot=gMC->Etot();
 726             hits[3]=etot;
 727             Int_t iPart= gMC->TrackPid();
 728             Int_t partID=gMC->IdFromPDG(iPart);
 729             hits[4]=partID;
 730             Float_t ttime=gMC->TrackTime();
 731             hits[5]=ttime*1e12;
 732             if(RegisterPhotoE(vol[1]-1,hits[3]))
 733               AddHit(fIshunt,vol,hits);
 734
 735           }
 736           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
 737
 738         /*
 739                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
 740                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
 741                gMC->IsTrackAlive(),
 742                gMC->IsTrackDisappeared(),
 743                gMC->IsTrackEntering(),
 744                gMC->IsTrackExiting(),
 745                gMC->IsTrackInside(),
 746                gMC->IsTrackOut(),
 747                gMC->IsTrackStop(),
 748                gMC->IsNewTrack());
 749         */
 750       } //sensitive
 751   } //photon
 752 }
 753
 754
 755
 756 //------------------------------------------------------------------------
 757 Bool_t AliT0v1::RegisterPhotoE(Int_t ipmt,Double_t energy)
 758 {
 759
 760
 761   //  Float_t hc=197.326960*1.e6; //mev*nm
 762   Double_t hc=1.973*1.e-6; //gev*nm
 763   Float_t lambda=hc/energy;
 764   Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
 765   Double_t  p = gRandom->Rndm();
 766
 767   if (p > eff)
 768     return kFALSE;
 769
 770   return kTRUE;
 771 }
 772
 773 //----------------------------------------------------------------------------
 774
 775
 776
 777
 778
 779