PHOS/AliPHOSv1.cxx

   1 /////////////////////////////////////////////////////////
   2 //  Manager and hits classes for set:PHOS version 1    //
   3 /////////////////////////////////////////////////////////
   4
   5 // --- ROOT system ---
   6 #include "TH1.h"
   7 #include "TRandom.h"
   8 #include "TFile.h"
   9 #include "TTree.h"
  10 #include "TBRIK.h"
  11 #include "TNode.h"
  12
  13 // --- galice header files ---
  14 #include "AliPHOSv1.h"
  15 #include "AliRun.h"
  16 #include "TGeant3.h"
  17
  18 ClassImp(AliPHOSv1)
  19
  20 //______________________________________________________________________________
  21
  22
  23 AliPHOSv1::AliPHOSv1() : AliPHOS()
  24 {
  25 }
  26
  27 //______________________________________________________________________________
  28
  29 AliPHOSv1::AliPHOSv1(const char *name, const char *title)
  30           : AliPHOS(name, title)
  31 {
  32 }
  33
  34 //___________________________________________
  35 void AliPHOSv1::CreateGeometry()
  36 {
  37
  38   AliMC* pMC = AliMC::GetMC();
  39
  40   AliPHOS *PHOS_tmp = (AliPHOS*)gAlice->GetDetector("PHOS");
  41   if( NULL==PHOS_tmp )
  42   {
  43     printf("There isn't PHOS detector!\n");
  44     return;
  45   }
  46 //  AliPHOS &PHOS = *PHOS_tmp;
  47
  48   //////////////////////////////////////////////////////////////////////////////
  49
  50   Int_t                 rotation_matrix_number=0;
  51   Float_t               par[11],
  52                         x,y,z;
  53
  54   const float           cell_length             = GetCrystalLength()+GetAirThickness()+GetWrapThickness()+GetPIN_Length(),
  55                         cell_side_size          = GetCrystalSideSize()+2*GetAirThickness()+2*GetWrapThickness(),
  56 //                        cell_angle              = 180/M_PI * 2 * atan(cell_side_size/2 / GetRadius()),        // radians
  57                         cradle_thikness         = cell_length + GetCPV_Thickness() + GetCPV_PHOS_Distance(),
  58                         distance_to_CPV         = GetRadius() - GetCPV_Thickness() - GetCPV_PHOS_Distance();
  59
  60   //////////////////////////////////////////////////////////////////////////////
  61   // CELL volume and subvolumes creation
  62   //////////////////////////////////////////////////////////////////////////////
  63
  64   par[0] = GetCrystalSideSize()/2 + GetWrapThickness();
  65   par[1] = GetCrystalSideSize()/2 + GetWrapThickness();
  66   par[2] = GetCrystalLength()  /2 + GetWrapThickness()/2;
  67   pMC->Gsvolu("WRAP","BOX ",GetPHOS_IDTMED_Tyvek(),par,3);
  68
  69   par[0] = GetCrystalSideSize()/2;
  70   par[1] = GetCrystalSideSize()/2;
  71   par[2] = GetCrystalLength()/2;
  72   pMC->Gsvolu("CRST","BOX ",GetPHOS_IDTMED_PbWO4(),par,3);
  73
  74   // PIN
  75   par[0] = GetPIN_SideSize()/2;
  76   par[1] = GetPIN_SideSize()/2;
  77   par[2] = GetPIN_Length()/2;
  78   pMC->Gsvolu("PIN ","BOX ",GetPHOS_IDTMED_PIN(),par,3);
  79
  80   //////////////////////////////////////////////////////////////////////////////
  81   // CRADLE,CPV creation.
  82   //////////////////////////////////////////////////////////////////////////////
  83
  84   par[0] = cell_side_size/2 * GetNz();
  85   par[1] = cell_side_size/2 * GetNphi();
  86   par[2] = cradle_thikness/2;
  87   pMC->Gsvolu("PHOS","BOX ",GetPHOS_IDTMED_AIR(),par,3);
  88
  89 //par[0] : the same as above
  90 //par[1] : the same as above
  91   par[2] = GetCPV_Thickness()/2;
  92   pMC->Gsvolu("CPV ","BOX ",GetPHOS_IDTMED_CPV(),par,3);
  93
  94   x = 0;
  95   y = 0;
  96   z = (cell_length+GetCPV_PHOS_Distance())/2;
  97   pMC->Gspos("CPV ",1,"PHOS",x,y,z,0,"ONLY");
  98
  99   par[0] = cell_side_size/2 * GetNz();
 100   par[1] = cell_side_size/2 * GetNphi();
 101   par[2] = cell_length/2;
 102   pMC->Gsvolu("CRS0","BOX ",GetPHOS_IDTMED_AIR(),par,3);
 103
 104   x = 0;
 105   y = 0;
 106   z = -(cradle_thikness-cell_length)/2;
 107   pMC->Gspos("CRS0",1,"PHOS",x,y,z,0,"ONLY");
 108
 109   pMC->Gsdvn("CRS1","CRS0",GetNphi(),2);
 110   pMC->Gsdvn("CELL","CRS1",GetNz()  ,1);
 111
 112   //////////////////////////////////////////////////////////////////////////////
 113   // CELL creation
 114   //////////////////////////////////////////////////////////////////////////////
 115
 116   x = 0;
 117   y = 0;
 118   z = -GetWrapThickness()/2;
 119   pMC->Gspos("CRST",1,"WRAP",x,y,z,0,"ONLY");
 120
 121   x = 0;
 122   y = 0;
 123   z = GetPIN_Length()/2;
 124   pMC->Gspos("WRAP",1,"CELL",x,y,z,0,"ONLY");
 125
 126   x = 0;
 127   y = 0;
 128   z = -GetCrystalLength()/2-GetWrapThickness()/2;
 129   pMC->Gspos("PIN ",1,"CELL",x,y,z,0,"ONLY");
 130
 131   //////////////////////////////////////////////////////////////////////////////
 132   // CELL has been created.
 133   //////////////////////////////////////////////////////////////////////////////
 134
 135 //   int n=0;
 136 //   z = -(GetCPV_Thickness()+GetCPV_PHOS_Distance())/2;
 137 //
 138 //   for( int iy=0; iy<GetNphi(); iy++ )
 139 //   {
 140 //     y = (iy-(GetNphi()-1)/2.)*cell_side_size;
 141 //     for( int ix=0; ix<GetNz(); ix++ )
 142 //     {
 143 //       x = (ix-(GetNz()-1)/2.)*cell_side_size;
 144 //       pMC->Gspos("CELL",++n,"PHOS",x,y,z,0,"ONLY");
 145 //     }
 146 //   }
 147
 148   //////////////////////////////////////////////////////////////////////////////
 149   // End of CRADLE creation.
 150   //////////////////////////////////////////////////////////////////////////////
 151
 152
 153   //////////////////////////////////////////////////////////////////////////////
 154   // PHOS creation
 155   //////////////////////////////////////////////////////////////////////////////
 156
 157   for( int i=0; i<GetCradlesAmount(); i++ )
 158   {
 159     float c                = distance_to_CPV,           // Distance to CPV
 160           l                = cell_side_size*GetNphi()/2,      // Cradle half size around beam (for rect. geom.)
 161           cradle_angle     = 360/M_PI*atan(l/c),
 162           cradle_angle_pos = -90+(i-(GetCradlesAmount()-1)/2.) * (cradle_angle+GetAngleBetweenCradles());
 163     // Cradles are numerated in clock reversed order. (general way of angle increment)
 164
 165     float   r       = GetRadius() + cradle_thikness/2;
 166     x = r*cos(cradle_angle_pos*M_PI/180);
 167     y = r*sin(cradle_angle_pos*M_PI/180);
 168     z = 0;
 169     AliMatrix(rotation_matrix_number, 0,0 , 90,90+cradle_angle_pos , 90,180+cradle_angle_pos);
 170     pMC->Gspos("PHOS",i+1,"ALIC",x,y,z,rotation_matrix_number,"ONLY");
 171
 172     GetCradleAngle(i) = cradle_angle_pos;
 173 //
 174 //    int n = PHOS.fCradles->GetEntries();
 175 //    PHOS.fCradles->Add(new AliPHOSCradle( 1,            // geometry.
 176 //                                          GetCrystalSideSize    (),
 177 //                                          GetCrystalLength      (),
 178 //                                          GetWrapThickness      (),
 179 //                                          GetAirThickness       (),
 180 //                                          GetPIN_SideSize       (),
 181 //                                          GetPIN_Length         (),
 182 //                                          GetRadius             (),
 183 //                                          GetCPV_Thickness      (),
 184 //                                          GetCPV_PHOS_Distance  (),
 185 //                                          GetNz                 (),
 186 //                                          GetNphi               (),
 187 //                                          cradle_angle_pos      ));
 188 //
 189 //    if( n+1 != PHOS.fCradles->GetEntries() ||
 190 //        NULL == PHOS.fCradles->At(n) )
 191 //    {
 192 //      cout << "  Can not create or add AliPHOSCradle.\n";
 193 //      exit(1);
 194 //    }
 195   }
 196   AddPHOSCradles();
 197
 198   //////////////////////////////////////////////////////////////////////////////
 199   // All is done.
 200   // Print some information.
 201   //////////////////////////////////////////////////////////////////////////////
 202 }
 203
 204 void AliPHOSv1::StepManager()
 205 {
 206   static Bool_t inwold=0;   // Status of previous ctrak->inwvol
 207   AliMC *MC = AliMC::GetMC();
 208   Int_t copy;
 209
 210 // cout << form("PHOS STEP: %d %d %d %d\n",
 211 //               MC->GetMedium(),cvolu->nlevel,ctrak->inwvol,inwold);
 212
 213   int cradle_number, cell_Z, cell_Phi;  // Variables that describe cell position.
 214
 215   if( MC->GetMedium() == GetPHOS_IDTMED_PIN() && (MC->TrackInside() || MC->TrackExiting()==2) && inwold && MC->TrackCharge()!=0 )
 216   {
 217     // GEANT particle just have entered into PIN diode.
 218
 219     AliPHOS &PHOS = *(AliPHOS*)gAlice->GetDetector("PHOS");
 220
 221     MC->CurrentVolOff(4,0,copy);
 222     cradle_number  = copy-1;
 223     MC->CurrentVolOff(1,0,copy);
 224     cell_Z         = copy-1;
 225     MC->CurrentVolOff(2,0,copy);
 226     cell_Phi       = copy-1;
 227 /*
 228         cradle_number  = cvolu->number[cvolu->nlevel-5]-1;
 229         cell_Z         = cvolu->number[cvolu->nlevel-2]-1;
 230         cell_Phi       = cvolu->number[cvolu->nlevel-3]-1;
 231 */
 232
 233     TH2S &h = PHOS.GetCradle(cradle_number).fChargedTracksInPIN;
 234     h.AddBinContent(h.GetBin(cell_Z,cell_Phi));
 235   }
 236
 237   //////////////////////////////////////////////////////////////////////////////
 238
 239   if( MC->GetMedium() == GetPHOS_IDTMED_PbWO4() ) //&& gckine_.CHARGE )
 240   {
 241     // GEANT particle into crystal.
 242
 243     AliPHOS &PHOS = *(AliPHOS*)gAlice->GetDetector("PHOS");
 244
 245     MC->CurrentVolOff(5,0,copy);
 246     cradle_number  = copy-1;
 247     MC->CurrentVolOff(2,0,copy);
 248     cell_Z         = copy-1;
 249     MC->CurrentVolOff(3,0,copy);
 250     cell_Phi       = copy-1;
 251 /*
 252         cradle_number  = cvolu->number[cvolu->nlevel-6]-1;
 253         cell_Z         = cvolu->number[cvolu->nlevel-3]-1;
 254         cell_Phi       = cvolu->number[cvolu->nlevel-4]-1;
 255 */
 256     TH2F &h = PHOS.GetCradle(cradle_number).fCellEnergy;
 257     h.AddBinContent(h.GetBin(cell_Z,cell_Phi),MC->Edep());
 258   }
 259
 260   //////////////////////////////////////////////////////////////////////////////
 261
 262   if( MC->GetMedium()==GetPHOS_IDTMED_CPV() && (MC->TrackInside() || MC->TrackExiting()) && inwold )
 263   {
 264     // GEANT particle just have entered into CPV detector.
 265
 266     AliPHOS &PHOS = *(AliPHOS*)gAlice->GetDetector("PHOS");
 267
 268     MC->CurrentVolOff(1,0,cradle_number);
 269     cradle_number--;
 270 //        cradle_number  = cvolu->number[cvolu->nlevel-2]-1;
 271
 272     // Save CPV x,y hits position of charged particles.
 273
 274     AliPHOSCradle  &cradle = PHOS.GetCradle(cradle_number);
 275
 276     Float_t   xyz[3];
 277     MC->TrackPosition(xyz);
 278     Hep3Vector          p(xyz[0],xyz[1],xyz[2]),v;
 279
 280     float x,y,l;
 281     float R = cradle.GetRadius() - cradle.GetCPV_PHOS_Distance() - cradle.GetCPV_Thikness();
 282     cradle.GetXY(p,v,R,x,y,l);
 283     if( PHOS.fDebugLevel>0 )
 284       if( l<0 )
 285         printf("PHOS_STEP:  warning: negative distance to CPV!! %f\n", l);
 286
 287     // Store current particle in the list of Cradle particles.
 288     Float_t  pmom[4];
 289     MC->TrackMomentum(pmom);
 290     float     Px      =       pmom[0] * pmom[3],
 291               Py      =       pmom[1] * pmom[3],
 292               Pz      =       pmom[2] * pmom[3];
 293
 294 //     TClonesArray &P=cradle.GetParticles();
 295 //     new( P[P.GetEntries()] ) AliPHOSgamma(x,0,y,0,ctrak->getot,0,Px,Py,Pz);
 296     cradle.GetParticles().Add(new AliPHOSgamma(x,0,y,0,MC->Etot(),0,Px,Py,Pz));
 297
 298     if( MC->TrackCharge()!=0 )
 299       cradle.AddCPVHit(x,y);
 300   }
 301
 302   inwold=MC->TrackEntering();         // Save current status of GEANT variable.
 303 }
 304