TOF/AliTOFv1.cxx

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //                                                                           //
   3 //  Time Of Flight                                                           //
   4 //  This class contains the functions for version 1 of the Time Of Flight    //
   5 //  detector.                                                                //
   6 //                                                                           //
   7 //Begin_Html
   8 /*
   9 <img src="gif/AliTOFv1Class.gif">
  10 */
  11 //End_Html
  12 //                                                                           //
  13 ///////////////////////////////////////////////////////////////////////////////
  14
  15 #include "AliTOFv1.h"
  16 #include "AliRun.h"
  17 #include "AliConst.h"
  18
  19 ClassImp(AliTOFv1)
  20
  21 //_____________________________________________________________________________
  22 AliTOFv1::AliTOFv1()
  23 {
  24   //
  25   // Default constructor
  26   //
  27 }
  28
  29 //_____________________________________________________________________________
  30 AliTOFv1::AliTOFv1(const char *name, const char *title)
  31        : AliTOF(name,title)
  32 {
  33   //
  34   // Standard constructor for version 1 of Time Of Flight
  35   //
  36 }
  37
  38 //_____________________________________________________________________________
  39 void AliTOFv1::CreateGeometry()
  40 {
  41   //
  42   // Create geometry for version 1 of Time Of Flight
  43   // Authors :   Maxim Martemianov, Boris Zagreev (ITEP)   18/09/98
  44   //Begin_Html
  45   /*
  46     <img src="gif/AliTOFv1.gif">
  47   */
  48   //End_Html
  49   //
  50
  51   AliMC* pMC = AliMC::GetMC();
  52
  53   Float_t fil_rich;
  54   Int_t lmax;
  55   Float_t phos_phi, zcor2, zcor3, ztof0, ztof1, ztof2;
  56   Float_t zl, phos_r, zazor;
  57   Int_t idrotm[101];
  58   Float_t phos_x;
  59   Float_t rp1, rp2;
  60   Float_t par[10], fil_min, fil_max, ysz, fil0;
  61   //
  62   Int_t *idtmed = gAlice->Idtmed();
  63   //
  64   // barrel size along Z axis
  65   //
  66   // Temporary fix TOF people should really check this!!
  67   //  rp1 = 360.;
  68   // rp2 = 372.;
  69   rp1 = 370;
  70   rp2 = rp1 + 12;
  71   zl  = 720.;
  72   //
  73   // TOF width along radius of barrel
  74   //xtof  = rp2 - rp1;
  75   ztof0 = 350.;
  76   ztof1 = 200.;
  77   ztof2 = 150.;
  78   //
  79   // Plate width
  80   ysz = .3;
  81   //
  82   // DME barrel width
  83   zazor = 0.03;
  84   //
  85   // PHOS and RICH angles
  86   phos_x = 214.6;
  87   phos_r = 467.;
  88   //phos_z = 260.;
  89   //rich_z = 472.5;
  90   fil_rich = 30.;
  91   lmax = 19;
  92   zcor2 = ztof0 - ztof1 / 2.;
  93   zcor3 = ztof0 - ztof2 / 2.;
  94   phos_phi = TMath::ATan(phos_x / (phos_r * 2.));
  95   fil_min = (kPI - phos_phi * 4.) * kRaddeg - 180. / lmax;
  96   fil_max = (phos_phi * 4. + kPI) * kRaddeg + 180. / lmax;
  97   //
  98   // barrel radius in ALIC
  99   par[0] = rp1;
 100   par[1] = rp2;
 101   par[2] = zl / 2.;
 102   pMC->Gsvolu("FBAR", "TUBE", idtmed[500], par, 3);
 103   pMC->Gspos("FBAR", 1, "ALIC", 0., 0., 0., 0, "ONLY");
 104   pMC->Gsatt("FBAR", "SEEN", 0);
 105   //
 106   // --- First Block
 107   par[0] = (rp1+rp2-zazor)/2.;
 108   par[1] = (rp1+rp2+zazor)/2.;
 109   par[2] = ztof0;
 110   par[3] = 90. - fil_min;
 111   par[4] = 90. - fil_rich;
 112   fil0 = 180. - (par[3] + par[4]);
 113   //
 114   // --- Sensitive volume
 115   pMC->Gsvolu("FBT1", "TUBS", idtmed[509], par, 5);
 116   AliMatrix(idrotm[1], 90., fil0, 90., fil0 + 90., 0., 0.);
 117   pMC->Gspos("FBT1", 0, "FBAR", 0., 0., 0., 0, "ONLY");
 118   pMC->Gspos("FBT1", 1, "FBAR", 0., 0., 0., idrotm[1], "ONLY");
 119   //
 120   // ALUMINA
 121   par[0] = (rp1+rp2+zazor)/2.;
 122   par[1] = (rp1+rp2+zazor)/2.+ysz;
 123   pMC->Gsvolu("FPE1","TUBS",idtmed[507], par, 0);
 124   pMC->Gsposp("FPE1",2,"FBAR", 0., 0., 0., 0,         "ONLY", par, 5);
 125   pMC->Gsposp("FPE1",3,"FBAR", 0., 0., 0., idrotm[1], "ONLY", par, 5);
 126   //
 127   par[0] = (rp1+rp2-zazor)/2.-ysz;
 128   par[1] = (rp1+rp2-zazor)/2.;
 129   pMC->Gsposp("FPE1",4,"FBAR", 0., 0., 0., 0,         "ONLY", par, 5);
 130   pMC->Gsposp("FPE1",5,"FBAR", 0., 0., 0., idrotm[1], "ONLY", par, 5);
 131   // --- Second block
 132   par[0] = (rp1+rp2-zazor)/2.;
 133   par[1] = (rp1+rp2+zazor)/2.;
 134   par[2] = ztof1 / 2.;
 135   par[3] = 90. - fil_max;
 136   par[4] = 90. - fil_min;
 137   pMC->Gsvolu("FBT2", "TUBS", idtmed[509], par, 5);
 138   pMC->Gspos("FBT2", 0, "FBAR", 0., 0., zcor2, 0, "ONLY");
 139   pMC->Gspos("FBT2", 1, "FBAR", 0., 0., -zcor2, 0, "ONLY");
 140   //
 141   par[0]=(rp1+rp2+zazor)/2.;
 142   par[1]=(rp1+rp2+zazor)/2.+ysz;
 143   pMC->Gsvolu("FPE2","TUBS",idtmed[507], par, 0);
 144   pMC->Gsposp("FPE2",2,"FBAR",0.,0.,zcor2,0,"ONLY",par,5);
 145   pMC->Gsposp("FPE2",3,"FBAR",0.,0.,-zcor2,0,"ONLY",par,5);
 146   //
 147   par[0]=(rp1+rp2-zazor)/2.-ysz;
 148   par[1]=(rp1+rp2-zazor)/2.;
 149   pMC->Gsposp("FPE2",4,"FBAR",0.,0.,zcor2,0,"ONLY",par,5);
 150   pMC->Gsposp("FPE2",5,"FBAR",0.,0.,-zcor2,0,"ONLY",par,5);
 151   //
 152   // --- Third block
 153   par[0] = (rp1+rp2-zazor)/2.;
 154   par[1] = (rp1+rp2-zazor)/2.;
 155   par[2] = ztof2 / 2.;
 156   par[3] = 90. - fil_rich;
 157   par[4] = fil_rich + 90.;
 158   pMC->Gsvolu("FBT3", "TUBS", idtmed[509], par, 5);
 159   pMC->Gspos("FBT3", 0, "FBAR", 0., 0., zcor3, 0, "ONLY");
 160   pMC->Gspos("FBT3", 1, "FBAR", 0., 0., -zcor3, 0, "ONLY");
 161   //
 162   par[0]=(rp1+rp2+zazor)/2.;
 163   par[1]=(rp1+rp2+zazor)/2.+ysz;
 164   pMC->Gsvolu("FPE3","TUBS",idtmed[507], par, 0);
 165   pMC->Gsposp("FPE3",2,"FBAR",0.,0.,zcor3,0,"ONLY",par,5);
 166   pMC->Gsposp("FPE3",3,"FBAR",0.,0.,-zcor3,0,"ONLY",par,5);
 167   //
 168   par[0]=(rp1+rp2-zazor)/2.-ysz;
 169   par[1]=(rp1+rp2-zazor)/2.;
 170   pMC->Gsposp("FPE3",4,"FBAR",0.,0.,zcor3,0,"ONLY",par,5);
 171   pMC->Gsposp("FPE3",5,"FBAR",0.,0.,-zcor3,0,"ONLY",par,5);
 172   //
 173 }
 174
 175 //_____________________________________________________________________________
 176 void AliTOFv1::DrawModule()
 177 {
 178   //
 179   // Draw a shaded view of the Time Of Flight version 1
 180   //
 181
 182   AliMC* pMC = AliMC::GetMC();
 183
 184   // Set everything unseen
 185   pMC->Gsatt("*", "seen", -1);
 186   //
 187   // Set ALIC mother transparent
 188   pMC->Gsatt("ALIC","SEEN",0);
 189   //
 190   // Set the volumes visible
 191   pMC->Gsatt("FBAR","SEEN",0);
 192   pMC->Gsatt("FPE1","SEEN",1);
 193   pMC->Gsatt("FPE2","SEEN",1);
 194   pMC->Gsatt("FPE3","SEEN",1);
 195   //
 196   pMC->Gdopt("hide", "on");
 197   pMC->Gdopt("shad", "on");
 198   pMC->Gsatt("*", "fill", 7);
 199   pMC->SetClipBox(".");
 200   pMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
 201   pMC->DefaultRange();
 202   pMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
 203   pMC->Gdhead(1111, "Time Of Flight");
 204   pMC->Gdman(18, 4, "MAN");
 205   pMC->Gdopt("hide","off");
 206 }
 207
 208 //___________________________________________
 209 void AliTOFv1::CreateMaterials()
 210 {
 211   //
 212   // Define materials for Time Of Flight
 213   //
 214   AliTOF::CreateMaterials();
 215 }
 216
 217 //______________________________________________________________________________
 218 void AliTOFv1::Init()
 219 {
 220   //
 221   // Initialise Time Of Flight after it has been built
 222
 223   AliMC* pMC = AliMC::GetMC();
 224
 225   AliTOF::Init();
 226   fIdFBT2=pMC->VolId("FBT2");
 227   fIdFBT3=pMC->VolId("FBT3");
 228 }
 229
 230 //______________________________________________________________________________
 231 void AliTOFv1::StepManager()
 232 {
 233   Float_t hits[8];
 234   Int_t vol[3];
 235   Int_t copy, id;
 236   AliMC *pMC= AliMC::GetMC();
 237   Int_t *idtmed = gAlice->Idtmed();
 238   if(pMC->GetMedium()==idtmed[510-1] &&
 239      pMC->TrackEntering() && pMC->TrackCharge()
 240      && (id=pMC->CurrentVol(0,copy))==fIdSens) {
 241     TClonesArray &lhits = *fHits;
 242 //
 243 // Record only charged tracks at entrance
 244     vol[2]=copy;
 245     vol[1]=pMC->CurrentVolOff(1,0,copy);
 246     if(id==fIdFBT2) copy+=2; else
 247       if(id==fIdFBT2) copy+=4;
 248     vol[0]=1;
 249     pMC->TrackPosition(hits);
 250     pMC->TrackMomentum(&hits[3]);
 251     hits[7]=pMC->TrackTime();
 252     new(lhits[fNhits++]) AliTOFhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
 253   }
 254 }
 255