[u/mrichter/AliRoot.git] / TRD / AliTRDv1.cxx

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  Transition Radiation Detector version 1 -- coarse simulation             //
//  This version has two detector arms, leaving the space in front of the    //
//  HMPID and PHOS empty                                                     //
//                                                                           //
//Begin_Html
/*
<img src="picts/AliTRDv1Class.gif">
*/
//End_Html
//                                                                           //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include <TMath.h>
#include <TRandom.h>
#include <TVector.h>

#include "AliTRDv1.h"
#include "AliRun.h"
#include "AliMC.h"
#include "AliConst.h"
 
ClassImp(AliTRDv1)

//_____________________________________________________________________________
AliTRDv1::AliTRDv1(const char *name, const char *title) 
         :AliTRD(name, title) 
{
  //
  // Standard constructor for the Transition Radiation Detector version 1
  //
  fIdSens1 = fIdSens2 = fIdSens3 = 0;
}
 
//_____________________________________________________________________________
void AliTRDv1::CreateGeometry()
{
  //
  // Create the geometry for the Transition Radiation Detector version 1
  // --- The coarse geometry of the TRD, that can be used for background 
  //     studies. This version leaves the space in front of the PHOS and 
  //     HMPID empty. 
  // --- Author :  Christoph Blume (GSI) 18/5/99 
  //
  // --- Volume names : 
  //     TRD       --> Mother TRD volume                                     (Air)
  //     UTRD      --> The detector arms                                     (Al)
  //     UTRS      --> Sectors of the sub-detector                           (Al)
  //     UTRI      --> Inner part of the detector frame                      (Air) 
  //     UTCI(N,O) --> Frames of the inner, neighbouring and outer chambers  (C) 
  //     UTII(N,O) --> Inner part of the chambers                            (Air) 
  //     UTMI(N,O) --> Modules in the chambers                               (Air) 
  //     UT0I(N,O) --> Radiator seal                                         (G10)
  //     UT1I(N,O) --> Radiator                                              (CO2)
  //     UT2I(N,O) --> Polyethylene of radiator                              (PE)
  //     UT3I(N,O) --> Entrance window                                       (Mylar)
  //     UT4I(N,O) --> Gas volume (sensitive)                                (Xe/Isobutane)
  //     UT5I(N,O) --> Pad plane                                             (Cu)
  //     UT6I(N,O) --> Support structure                                     (G10)
  //     UT7I(N,O) --> FEE + signal lines                                    (Cu)
  //     UT8I(N,O) --> Polyethylene of cooling device                        (PE)
  //     UT9I(N,O) --> Cooling water                                         (Water)
  //
  //Begin_Html
  /*
    <img src="picts/AliTRDv1.gif">
  */
  //End_Html
  //Begin_Html
  /*
    <img src="picts/AliTRDv1Tree.gif">
  */
  //End_Html

  Float_t xpos, ypos, zpos, f;
  Int_t   idmat[5];

  const Int_t nparmo = 10;
  const Int_t nparar = 10;
  const Int_t nparfr =  4;
  const Int_t nparic =  4;
  const Int_t nparnc =  4;
  const Int_t nparoc = 11;

  Float_t par_mo[nparmo];
  Float_t par_ar[nparar];
  Float_t par_fr[nparfr];
  Float_t par_ic[nparic];
  Float_t par_nc[nparnc];
  Float_t par_oc[nparoc];
  
  Int_t *idtmed = fIdtmed->GetArray()-1299;
  
  AliMC* pMC = AliMC::GetMC();
  
  //////////////////////////////////////////////////////////////////////////
  //     Definition of Volumes   
  //////////////////////////////////////////////////////////////////////////

  // Definition of the mother volume for the TRD (Air) 
  par_mo[0] =   0.;
  par_mo[1] = 360.;
  par_mo[2] = nsect;
  par_mo[3] = 2.;
  par_mo[4] = -zmax1;
  par_mo[5] = rmin;
  par_mo[6] = rmax;
  par_mo[7] =  zmax1;
  par_mo[8] = rmin;
  par_mo[9] = rmax;
  pMC->Gsvolu("TRD ", "PGON", idtmed[1302-1], par_mo, nparmo);
  
  Float_t phisec = 360. / nsect;   
  // Definition of the two detector arms (Al) 
  par_ar[0] = 120.;
  par_ar[1] = narmsec * phisec;
  par_ar[2] = narmsec;
  par_ar[3] = 2.;
  par_ar[4] = -zmax1;
  par_ar[5] = rmin;
  par_ar[6] = rmax;
  par_ar[7] =  zmax1;
  par_ar[8] = rmin;
  par_ar[9] = rmax;
  pMC->Gsvolu("UTRD", "PGON", idtmed[1301-1], par_ar, nparar);
  pMC->Gsdvn("UTRS", "UTRD", narmsec, 2);

  // The minimal width of a sector in rphi-direction
  Float_t widmi = rmin * TMath::Tan(kPI/nsect);
  // The maximal width of a sector in rphi-direction
  Float_t widma = rmax * TMath::Tan(kPI/nsect);
  // The total thickness of the spaceframe (Al + Air)
  Float_t frame = widmi - (widpl1 / 2);

  // Definition of the inner part of the detector frame (Air) 
  par_fr[0] = widmi - alframe / 2;
  par_fr[1] = widma - alframe / 2;
  par_fr[2] = zmax1;
  par_fr[3] = (rmax - rmin) / 2;
  pMC->Gsvolu("UTRI", "TRD1", idtmed[1302-1], par_fr, nparfr); 

  // 
  // The outer chambers
  //

  // Calculate some shape-parameter
  Float_t tanzr = (zmax1 - zmax2) / (rmax - rmin);
  Float_t theoc = -kRaddeg * TMath::ATan(tanzr / 2);

  // The carbon frame (C)
  par_oc[0]  = (rmax - rmin) / 2;
  par_oc[1]  = theoc;
  par_oc[2]  = 90.;
  par_oc[3]  = (zmax2 - zlenn - zleni/2)   / 2;
  par_oc[4]  = widmi - frame;
  par_oc[5]  = widmi - frame;
  par_oc[6]  = 0.;
  par_oc[7]  = (zmax1 - zlenn - zleni/2)   / 2;
  par_oc[8]  = widma - frame;
  par_oc[9]  = widma - frame;
  par_oc[10] = 0.;
  pMC->Gsvolu("UTCO", "TRAP", idtmed[1307-1], par_oc, nparoc);

  // The inner part (Air) 
  par_oc[3] -= ccframe;
  par_oc[4] -= ccframe;
  par_oc[5] -= ccframe; 
  par_oc[7] -= ccframe;
  par_oc[8] -= ccframe;
  par_oc[9] -= ccframe;
  pMC->Gsvolu("UTIO", "TRAP", idtmed[1302-1], par_oc, nparoc);

  // Definition of the six modules within each chamber 
  pMC->Gsdvn("UTMO", "UTIO", nmodul, 3);

  // Definition of the layers of each chamber 
  par_oc[1]  =  theoc;
  par_oc[2]  =  90.;
  par_oc[3]  = -1.;
  par_oc[4]  = -1.;
  par_oc[5]  = -1.;
  par_oc[6]  =  0.;
  par_oc[7]  = -1.;
  par_oc[8]  = -1.;
  par_oc[9]  = -1.;
  par_oc[10] =  0.;
  // G10 layer (radiator layer)
  par_oc[0] = sethick / 2;
  pMC->Gsvolu("UT0O", "TRAP", idtmed[1313-1], par_oc, nparoc);
  // CO2 layer (radiator)
  par_oc[0] = rathick / 2;
  pMC->Gsvolu("UT1O", "TRAP", idtmed[1312-1], par_oc, nparoc);
  // PE layer (radiator)
  par_oc[0] = pethick / 2;
  pMC->Gsvolu("UT2O", "TRAP", idtmed[1303-1], par_oc, nparoc);
  // Mylar layer (entrance window + HV cathode) 
  par_oc[0] = mythick / 2;
  pMC->Gsvolu("UT3O", "TRAP", idtmed[1308-1], par_oc, nparoc);
  // Xe/Isobutane layer (gasvolume)
  par_oc[0] = xethick / 2;
  pMC->Gsvolu("UT4O", "TRAP", idtmed[1309-1], par_oc, nparoc);
  // Cu layer (pad plane)
  par_oc[0] = cuthick / 2;
  pMC->Gsvolu("UT5O", "TRAP", idtmed[1305-1], par_oc, nparoc);
  // G10 layer (support structure)
  par_oc[0] = suthick / 2;
  pMC->Gsvolu("UT6O", "TRAP", idtmed[1313-1], par_oc, nparoc);
  // Cu layer (FEE + signal lines)
  par_oc[0] = fethick / 2;
  pMC->Gsvolu("UT7O", "TRAP", idtmed[1305-1], par_oc, nparoc);
  // PE layer (cooling devices)
  par_oc[0] = cothick / 2;
  pMC->Gsvolu("UT8O", "TRAP", idtmed[1303-1], par_oc, nparoc);
  // Water layer (cooling)
  par_oc[0] = wathick / 2;
  pMC->Gsvolu("UT9O", "TRAP", idtmed[1314-1], par_oc, nparoc);

  //
  // The neighbouring chambers
  //

  // The carbon frame (C) 
  par_nc[0] = widmi - frame;
  par_nc[1] = widma - frame;
  par_nc[2] = zlenn / 2;
  par_nc[3] = (rmax - rmin) / 2;
  pMC->Gsvolu("UTCN", "TRD1", idtmed[1307-1], par_nc, nparnc);

  // The inner part (Air) 
  par_nc[0] -= ccframe;
  par_nc[1] -= ccframe;
  par_nc[2] -= ccframe;
  pMC->Gsvolu("UTIN", "TRD1", idtmed[1302-1], par_nc, nparnc);

  // Definition of the six modules within each outer chamber 
  pMC->Gsdvn("UTMN", "UTIN", nmodul, 3);

  // Definition of the layers of each chamber 
  par_nc[0] = -1.;
  par_nc[1] = -1.;
  par_nc[2] = -1.;
  // G10 layer (radiator layer)
  par_nc[3] = sethick / 2;
  pMC->Gsvolu("UT0N", "TRD1", idtmed[1313-1], par_nc, nparnc);
  // CO2 layer (radiator)
  par_nc[3] = rathick / 2;
  pMC->Gsvolu("UT1N", "TRD1", idtmed[1312-1], par_nc, nparnc);
  // PE layer (radiator)
  par_nc[3] = pethick / 2;
  pMC->Gsvolu("UT2N", "TRD1", idtmed[1303-1], par_nc, nparnc);
  // Mylar layer (entrance window + HV cathode) 
  par_nc[3] = mythick / 2;
  pMC->Gsvolu("UT3N", "TRD1", idtmed[1308-1], par_nc, nparnc);
  // Xe/Isobutane layer (gasvolume)
  par_nc[3] = xethick / 2;
  pMC->Gsvolu("UT4N", "TRD1", idtmed[1309-1], par_nc, nparnc);
  // Cu layer (pad plane)
  par_nc[3] = cuthick / 2;
  pMC->Gsvolu("UT5N", "TRD1", idtmed[1305-1], par_nc, nparnc);
  // G10 layer (support structure)
  par_nc[3] = suthick / 2;
  pMC->Gsvolu("UT6N", "TRD1", idtmed[1313-1], par_nc, nparnc);
  // Cu layer (FEE + signal lines)
  par_nc[3] = fethick / 2;
  pMC->Gsvolu("UT7N", "TRD1", idtmed[1305-1], par_nc, nparnc);
  // PE layer (cooling devices)
  par_nc[3] = cothick / 2;
  pMC->Gsvolu("UT8N", "TRD1", idtmed[1303-1], par_nc, nparnc);
  // Water layer (cooling)
  par_nc[3] = wathick / 2;
  pMC->Gsvolu("UT9N", "TRD1", idtmed[1314-1], par_nc, nparnc);

  //
  // The inner chamber
  //

  // The carbon frame (C) 
  par_ic[0] = widmi - frame;
  par_ic[1] = widma - frame;
  par_ic[2] = zleni / 2;
  par_ic[3] = (rmax - rmin) / 2;
  pMC->Gsvolu("UTCI", "TRD1", idtmed[1307-1], par_ic, nparic);

  // The inner part (Air) 
  par_ic[0] -= ccframe;
  par_ic[1] -= ccframe;
  par_ic[2] -= ccframe;
  pMC->Gsvolu("UTII", "TRD1", idtmed[1302-1], par_ic, nparic);

  // Definition of the six modules within each outer chamber 
  pMC->Gsdvn("UTMI", "UTII", nmodul, 3);

  // Definition of the layers of each inner chamber 
  par_ic[0] = -1.;
  par_ic[1] = -1.;
  par_ic[2] = -1.;
  // G10 layer (radiator layer)
  par_ic[3] = sethick / 2;
  pMC->Gsvolu("UT0I", "TRD1", idtmed[1313-1], par_ic, nparic);
  // CO2 layer (radiator)
  par_ic[3] = rathick / 2;
  pMC->Gsvolu("UT1I", "TRD1", idtmed[1312-1], par_ic, nparic);
  // PE layer (radiator)
  par_ic[3] = pethick / 2;
  pMC->Gsvolu("UT2I", "TRD1", idtmed[1303-1], par_ic, nparic);
  // Mylar layer (entrance window + HV cathode) 
  par_ic[3] = mythick / 2;
  pMC->Gsvolu("UT3I", "TRD1", idtmed[1308-1], par_ic, nparic);
  // Xe/Isobutane layer (gasvolume)
  par_ic[3] = xethick / 2;
  pMC->Gsvolu("UT4I", "TRD1", idtmed[1309-1], par_ic, nparic);
  // Cu layer (pad plane)
  par_ic[3] = cuthick / 2;
  pMC->Gsvolu("UT5I", "TRD1", idtmed[1305-1], par_ic, nparic);
  // G10 layer (support structure)
  par_ic[3] = suthick / 2;
  pMC->Gsvolu("UT6I", "TRD1", idtmed[1313-1], par_ic, nparic);
  // Cu layer (FEE + signal lines)
  par_ic[3] = fethick / 2;
  pMC->Gsvolu("UT7I", "TRD1", idtmed[1305-1], par_ic, nparic);
  // PE layer (cooling devices)
  par_ic[3] = cothick / 2;
  pMC->Gsvolu("UT8I", "TRD1", idtmed[1303-1], par_ic, nparic);
  // Water layer (cooling)
  par_ic[3] = wathick / 2;
  pMC->Gsvolu("UT9I", "TRD1", idtmed[1314-1], par_ic, nparic);

  //////////////////////////////////////////////////////////////////////////
  //     Positioning of Volumes 
  //////////////////////////////////////////////////////////////////////////

  // The rotation matrices 
  AliMatrix(idmat[0],  90., 180.,  90.,  90.,   0.,   0.);
  AliMatrix(idmat[1],  90.,  90., 180.,   0.,  90.,   0.);
  AliMatrix(idmat[2],  90., 180.,  90., 270.,   0.,   0.);

  // Position of the layers in a TRD module 
  f = TMath::Tan(theoc * kDegrad);
  pMC->Gspos("UT9O", 1, "UTMO", 0., f*wazpos, wazpos, 0, "ONLY");
  pMC->Gspos("UT8O", 1, "UTMO", 0., f*cozpos, cozpos, 0, "ONLY");
  pMC->Gspos("UT7O", 1, "UTMO", 0., f*fezpos, fezpos, 0, "ONLY");
  pMC->Gspos("UT6O", 1, "UTMO", 0., f*suzpos, suzpos, 0, "ONLY");
  pMC->Gspos("UT5O", 1, "UTMO", 0., f*cuzpos, cuzpos, 0, "ONLY");
  pMC->Gspos("UT4O", 1, "UTMO", 0., f*xezpos, xezpos, 0, "ONLY");
  pMC->Gspos("UT3O", 1, "UTMO", 0., f*myzpos, myzpos, 0, "ONLY");
  pMC->Gspos("UT1O", 1, "UTMO", 0., f*razpos, razpos, 0, "ONLY");
  pMC->Gspos("UT0O", 1, "UTMO", 0., f*sezpos, sezpos, 0, "ONLY");
  pMC->Gspos("UT2O", 1, "UT1O", 0., f*pezpos, pezpos, 0, "ONLY");

  pMC->Gspos("UT9N", 1, "UTMN", 0.,       0., wazpos, 0, "ONLY");
  pMC->Gspos("UT8N", 1, "UTMN", 0.,       0., cozpos, 0, "ONLY");
  pMC->Gspos("UT7N", 1, "UTMN", 0.,       0., fezpos, 0, "ONLY");
  pMC->Gspos("UT6N", 1, "UTMN", 0.,       0., suzpos, 0, "ONLY");
  pMC->Gspos("UT5N", 1, "UTMN", 0.,       0., cuzpos, 0, "ONLY");
  pMC->Gspos("UT4N", 1, "UTMN", 0.,       0., xezpos, 0, "ONLY");
  pMC->Gspos("UT3N", 1, "UTMN", 0.,       0., myzpos, 0, "ONLY");
  pMC->Gspos("UT1N", 1, "UTMN", 0.,       0., razpos, 0, "ONLY");
  pMC->Gspos("UT0N", 1, "UTMN", 0.,       0., sezpos, 0, "ONLY");
  pMC->Gspos("UT2N", 1, "UT1N", 0.,       0., pezpos, 0, "ONLY");

  pMC->Gspos("UT9I", 1, "UTMI", 0.,       0., wazpos, 0, "ONLY");
  pMC->Gspos("UT8I", 1, "UTMI", 0.,       0., cozpos, 0, "ONLY");
  pMC->Gspos("UT7I", 1, "UTMI", 0.,       0., fezpos, 0, "ONLY");
  pMC->Gspos("UT6I", 1, "UTMI", 0.,       0., suzpos, 0, "ONLY");
  pMC->Gspos("UT5I", 1, "UTMI", 0.,       0., cuzpos, 0, "ONLY");
  pMC->Gspos("UT4I", 1, "UTMI", 0.,       0., xezpos, 0, "ONLY");
  pMC->Gspos("UT3I", 1, "UTMI", 0.,       0., myzpos, 0, "ONLY");
  pMC->Gspos("UT1I", 1, "UTMI", 0.,       0., razpos, 0, "ONLY");
  pMC->Gspos("UT0I", 1, "UTMI", 0.,       0., sezpos, 0, "ONLY");
  pMC->Gspos("UT2I", 1, "UT1I", 0.,       0., pezpos, 0, "ONLY");

  // Position of the inner part of the chambers 
  xpos = 0.;
  ypos = 0.;
  zpos = 0.;
  pMC->Gspos("UTII", 1, "UTCI", xpos, ypos, zpos, 0, "ONLY");
  pMC->Gspos("UTIN", 1, "UTCN", xpos, ypos, zpos, 0, "ONLY");
  pMC->Gspos("UTIO", 1, "UTCO", xpos, ypos, zpos, 0, "ONLY");

  // Position of the chambers in the support frame 
  xpos = 0.;
  ypos = ((zmax1 + zmax2) / 2 + zlenn + zleni / 2) / 2;
  zpos = 0.;
  pMC->Gspos("UTCO", 1, "UTRI", xpos, ypos, zpos, idmat[2], "ONLY");
  pMC->Gspos("UTCO", 2, "UTRI", xpos,-ypos, zpos,       0 , "ONLY");
  xpos = 0.;
  ypos = (zlenn + zleni) / 2;
  zpos = 0.;
  pMC->Gspos("UTCN", 1, "UTRI", xpos, ypos, zpos,       0 , "ONLY");
  pMC->Gspos("UTCN", 2, "UTRI", xpos,-ypos, zpos,       0 , "ONLY");
  xpos = 0.;
  ypos = 0.;
  zpos = 0.;
  pMC->Gspos("UTCI", 1, "UTRI", xpos, ypos, zpos,       0 , "ONLY");

  // Position of the inner part of the detector frame
  xpos = (rmax + rmin) / 2;
  ypos = 0.;
  zpos = 0.;
  pMC->Gspos("UTRI", 1, "UTRS", xpos, ypos, zpos, idmat[1], "ONLY");

  // Position of the two arms of the detector
  xpos = 0.;
  ypos = 0.;
  zpos = 0.;
  pMC->Gspos("UTRD", 1, "TRD ", xpos, ypos, zpos,        0, "ONLY");
  pMC->Gspos("UTRD", 2, "TRD ", xpos, ypos, zpos, idmat[0], "ONLY");

  // Position of TRD mother volume in ALICE experiment 
  xpos = 0.;
  ypos = 0.;
  zpos = 0.;
  pMC->Gspos("TRD ", 1, "ALIC", xpos, ypos, zpos,        0, "ONLY");

}
 
//_____________________________________________________________________________
void AliTRDv1::DrawModule()
{
  //
  // Draw a shaded view of the Transition Radiation Detector version 1
  //

  AliMC* pMC = AliMC::GetMC();
  
  // Set everything unseen
  pMC->Gsatt("*", "seen", -1);
  // 
  // Set ALIC mother transparent
  pMC->Gsatt("ALIC","SEEN",0);
  //
  // Set the volumes visible
  pMC->Gsatt("TRD" ,"SEEN",0);
  pMC->Gsatt("UTRD","SEEN",0);
  pMC->Gsatt("UTRS","SEEN",0);
  pMC->Gsatt("UTRI","SEEN",0);
  pMC->Gsatt("UTCO","SEEN",0);
  pMC->Gsatt("UTIO","SEEN",0);
  pMC->Gsatt("UTMO","SEEN",0);
  pMC->Gsatt("UTCN","SEEN",0);
  pMC->Gsatt("UTIN","SEEN",0);
  pMC->Gsatt("UTMN","SEEN",0);
  pMC->Gsatt("UTCI","SEEN",0);
  pMC->Gsatt("UTII","SEEN",0);
  pMC->Gsatt("UTMI","SEEN",0);
  pMC->Gsatt("UT1O","SEEN",1);
  pMC->Gsatt("UT4O","SEEN",1);
  pMC->Gsatt("UT1N","SEEN",1);
  pMC->Gsatt("UT4N","SEEN",1);
  pMC->Gsatt("UT1I","SEEN",1);
  pMC->Gsatt("UT4I","SEEN",1);
  //
  pMC->Gdopt("hide", "on");
  pMC->Gdopt("shad", "on");
  pMC->Gsatt("*", "fill", 7);
  pMC->SetClipBox(".");
  pMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
  pMC->DefaultRange();
  pMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
  pMC->Gdhead(1111, "Transition Radiation Detector Version 1");
  pMC->Gdman(18, 4, "MAN");
}

//_____________________________________________________________________________
void AliTRDv1::CreateMaterials()
{
  //
  // Create materials for the Transition Radiation Detector version 1
  //
  AliTRD::CreateMaterials();
}

//_____________________________________________________________________________
void AliTRDv1::Init() 
{
  //
  // Initialise the Transition Radiation Detector after the geometry is built
  //
  AliTRD::Init();
  AliMC* pMC = AliMC::GetMC();

  // Retrieve the numeric identifier of the sensitive volumes (gas volume)
  fIdSens1 = pMC->VolId("UT4I");
  fIdSens2 = pMC->VolId("UT4N");
  fIdSens3 = pMC->VolId("UT4O");
}

//_____________________________________________________________________________
void AliTRDv1::StepManager() 
{
  //
  // Procedure called at every step in the TRD
  //

  Int_t         vol[3]; 
  Int_t         icopy1, icopy2;
  Int_t         idSens, icSens; 
  
  Float_t       hits[4];
  
  TClonesArray &lhits = *fHits;

  AliMC* pMC = AliMC::GetMC();
  
  // Use only charged tracks and count them only once per volume
  if (pMC->TrackCharge() && pMC->TrackExiting()) {
    
    // Check on sensitive volume
    idSens = pMC->CurrentVol(0,icSens);

    // Check on sensitive volume
    idSens = pMC->CurrentVol(0,icSens);
    if ((idSens == fIdSens1) || 
        (idSens == fIdSens2) ||
        (idSens == fIdSens3)) { 
      
      // The sector number
      pMC->CurrentVolOff(5,0,icopy1);
      pMC->CurrentVolOff(6,0,icopy2);
      if (icopy2 == 1)
        vol[0] =     icopy1;
      else
        vol[0] = 6 - icopy1 + 5;
      
      // The chamber number 
      //   1: outer left
      //   2: neighbouring left
      //   3: inner
      //   4: neighbouring right
      //   5: outer right
      pMC->CurrentVolOff(3,0,icopy1);
      if      (idSens == fIdSens3)
        vol[1] = 4 * icopy1 - 3; 
      else if (idSens == fIdSens2)
        vol[1] = 2 * icopy1;
      else 
        vol[1] = 3;
      
      // The plane number
      pMC->CurrentVolOff(1,0,icopy1);
      vol[2] = icopy1;

      if (fSensSelect) {
        Int_t addthishit = 1;
        if ((fSensPlane)   && (vol[2] != fSensPlane  )) addthishit = 0;
        if ((fSensChamber) && (vol[1] != fSensChamber)) addthishit = 0;
        if ((fSensSector)  && (vol[0] != fSensSector )) addthishit = 0;
        if (addthishit) {
          pMC->TrackPosition(hits);
          hits[3] = 0;
          new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
	}
      }
      else {      
        pMC->TrackPosition(hits);
        hits[3] = 0;
        new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
      }

    }

  } 

}
Commit	Line	Data
fe4da5cc	1	///////////////////////////////////////////////////////////////////////////////
fe4da5cc	2	// //
d3f347ff	3	// Transition Radiation Detector version 1 -- coarse simulation //
	4	// This version has two detector arms, leaving the space in front of the //
	5	// HMPID and PHOS empty //
fe4da5cc	6	// //
	7	//Begin_Html
	8	/*
1439f98e	9	<img src="picts/AliTRDv1Class.gif">
fe4da5cc	10	*/
	11	//End_Html
	12	// //
	13	// //
	14	///////////////////////////////////////////////////////////////////////////////
	15
	16	#include <TMath.h>
	17	#include <TRandom.h>
	18	#include <TVector.h>
fe4da5cc	19
fe4da5cc	20	#include "AliTRDv1.h"
fe4da5cc	21	#include "AliRun.h"
fe4da5cc	22	#include "AliMC.h"
d3f347ff	23	#include "AliConst.h"
fe4da5cc	24
	25	ClassImp(AliTRDv1)
	26
	27	//_____________________________________________________________________________
	28	AliTRDv1::AliTRDv1(const char name, const char title)
	29	:AliTRD(name, title)
	30	{
	31	//
	32	// Standard constructor for the Transition Radiation Detector version 1
	33	//
	34	fIdSens1 = fIdSens2 = fIdSens3 = 0;
	35	}
	36
	37	//_____________________________________________________________________________
	38	void AliTRDv1::CreateGeometry()
	39	{
	40	//
	41	// Create the geometry for the Transition Radiation Detector version 1
	42	// --- The coarse geometry of the TRD, that can be used for background
	43	// studies. This version leaves the space in front of the PHOS and
	44	// HMPID empty.
d3f347ff	45	// --- Author : Christoph Blume (GSI) 18/5/99
	46	//
	47	// --- Volume names :
	48	// TRD --> Mother TRD volume (Air)
	49	// UTRD --> The detector arms (Al)
	50	// UTRS --> Sectors of the sub-detector (Al)
	51	// UTRI --> Inner part of the detector frame (Air)
	52	// UTCI(N,O) --> Frames of the inner, neighbouring and outer chambers (C)
	53	// UTII(N,O) --> Inner part of the chambers (Air)
	54	// UTMI(N,O) --> Modules in the chambers (Air)
	55	// UT0I(N,O) --> Radiator seal (G10)
	56	// UT1I(N,O) --> Radiator (CO2)
	57	// UT2I(N,O) --> Polyethylene of radiator (PE)
	58	// UT3I(N,O) --> Entrance window (Mylar)
	59	// UT4I(N,O) --> Gas volume (sensitive) (Xe/Isobutane)
	60	// UT5I(N,O) --> Pad plane (Cu)
	61	// UT6I(N,O) --> Support structure (G10)
	62	// UT7I(N,O) --> FEE + signal lines (Cu)
	63	// UT8I(N,O) --> Polyethylene of cooling device (PE)
	64	// UT9I(N,O) --> Cooling water (Water)
fe4da5cc	65	//
	66	//Begin_Html
	67	/*
1439f98e	68	<img src="picts/AliTRDv1.gif">
fe4da5cc	69	*/
	70	//End_Html
	71	//Begin_Html
	72	/*
1439f98e	73	<img src="picts/AliTRDv1Tree.gif">
fe4da5cc	74	*/
	75	//End_Html
	76
	77	Float_t xpos, ypos, zpos, f;
d3f347ff	78	Int_t idmat[5];
	79
	80	const Int_t nparmo = 10;
	81	const Int_t nparar = 10;
	82	const Int_t nparfr = 4;
	83	const Int_t nparic = 4;
	84	const Int_t nparnc = 4;
	85	const Int_t nparoc = 11;
	86
	87	Float_t par_mo[nparmo];
	88	Float_t par_ar[nparar];
	89	Float_t par_fr[nparfr];
	90	Float_t par_ic[nparic];
	91	Float_t par_nc[nparnc];
	92	Float_t par_oc[nparoc];
fe4da5cc	93
ad51aeb0	94	Int_t *idtmed = fIdtmed->GetArray()-1299;
fe4da5cc	95
fe4da5cc	96	AliMC* pMC = AliMC::GetMC();
fe4da5cc	97
d3f347ff	98	//////////////////////////////////////////////////////////////////////////
	99	// Definition of Volumes
	100	//////////////////////////////////////////////////////////////////////////
	101
	102	// Definition of the mother volume for the TRD (Air)
	103	par_mo[0] = 0.;
fe4da5cc	104	par_mo[1] = 360.;
	105	par_mo[2] = nsect;
	106	par_mo[3] = 2.;
	107	par_mo[4] = -zmax1;
	108	par_mo[5] = rmin;
	109	par_mo[6] = rmax;
d3f347ff	110	par_mo[7] = zmax1;
fe4da5cc	111	par_mo[8] = rmin;
fe4da5cc	112	par_mo[9] = rmax;
d3f347ff	113	pMC->Gsvolu("TRD ", "PGON", idtmed[1302-1], par_mo, nparmo);
	114
	115	Float_t phisec = 360. / nsect;
	116	// Definition of the two detector arms (Al)
	117	par_ar[0] = 120.;
	118	par_ar[1] = narmsec * phisec;
	119	par_ar[2] = narmsec;
	120	par_ar[3] = 2.;
	121	par_ar[4] = -zmax1;
	122	par_ar[5] = rmin;
	123	par_ar[6] = rmax;
	124	par_ar[7] = zmax1;
	125	par_ar[8] = rmin;
	126	par_ar[9] = rmax;
	127	pMC->Gsvolu("UTRD", "PGON", idtmed[1301-1], par_ar, nparar);
	128	pMC->Gsdvn("UTRS", "UTRD", narmsec, 2);
	129
	130	// The minimal width of a sector in rphi-direction
c2ba0804	131	Float_t widmi = rmin * TMath::Tan(kPI/nsect);
d3f347ff	132	// The maximal width of a sector in rphi-direction
c2ba0804	133	Float_t widma = rmax * TMath::Tan(kPI/nsect);
d3f347ff	134	// The total thickness of the spaceframe (Al + Air)
	135	Float_t frame = widmi - (widpl1 / 2);
	136
	137	// Definition of the inner part of the detector frame (Air)
	138	par_fr[0] = widmi - alframe / 2;
	139	par_fr[1] = widma - alframe / 2;
	140	par_fr[2] = zmax1;
	141	par_fr[3] = (rmax - rmin) / 2;
	142	pMC->Gsvolu("UTRI", "TRD1", idtmed[1302-1], par_fr, nparfr);
	143
	144	//
	145	// The outer chambers
	146	//
	147
	148	// Calculate some shape-parameter
	149	Float_t tanzr = (zmax1 - zmax2) / (rmax - rmin);
	150	Float_t theoc = -kRaddeg * TMath::ATan(tanzr / 2);
	151
	152	// The carbon frame (C)
	153	par_oc[0] = (rmax - rmin) / 2;
	154	par_oc[1] = theoc;
	155	par_oc[2] = 90.;
	156	par_oc[3] = (zmax2 - zlenn - zleni/2) / 2;
	157	par_oc[4] = widmi - frame;
	158	par_oc[5] = widmi - frame;
	159	par_oc[6] = 0.;
	160	par_oc[7] = (zmax1 - zlenn - zleni/2) / 2;
	161	par_oc[8] = widma - frame;
	162	par_oc[9] = widma - frame;
fe4da5cc	163	par_oc[10] = 0.;
d3f347ff	164	pMC->Gsvolu("UTCO", "TRAP", idtmed[1307-1], par_oc, nparoc);
	165
	166	// The inner part (Air)
fe4da5cc	167	par_oc[3] -= ccframe;
fe4da5cc	168	par_oc[4] -= ccframe;
d3f347ff	169	par_oc[5] -= ccframe;
fe4da5cc	170	par_oc[7] -= ccframe;
	171	par_oc[8] -= ccframe;
	172	par_oc[9] -= ccframe;
d3f347ff	173	pMC->Gsvolu("UTIO", "TRAP", idtmed[1302-1], par_oc, nparoc);
	174
	175	// Definition of the six modules within each chamber
fe4da5cc	176	pMC->Gsdvn("UTMO", "UTIO", nmodul, 3);
d3f347ff	177
	178	// Definition of the layers of each chamber
	179	par_oc[1] = theoc;
	180	par_oc[2] = 90.;
	181	par_oc[3] = -1.;
	182	par_oc[4] = -1.;
	183	par_oc[5] = -1.;
	184	par_oc[6] = 0.;
	185	par_oc[7] = -1.;
	186	par_oc[8] = -1.;
	187	par_oc[9] = -1.;
	188	par_oc[10] = 0.;
	189	// G10 layer (radiator layer)
	190	par_oc[0] = sethick / 2;
	191	pMC->Gsvolu("UT0O", "TRAP", idtmed[1313-1], par_oc, nparoc);
	192	// CO2 layer (radiator)
	193	par_oc[0] = rathick / 2;
	194	pMC->Gsvolu("UT1O", "TRAP", idtmed[1312-1], par_oc, nparoc);
	195	// PE layer (radiator)
	196	par_oc[0] = pethick / 2;
	197	pMC->Gsvolu("UT2O", "TRAP", idtmed[1303-1], par_oc, nparoc);
	198	// Mylar layer (entrance window + HV cathode)
	199	par_oc[0] = mythick / 2;
	200	pMC->Gsvolu("UT3O", "TRAP", idtmed[1308-1], par_oc, nparoc);
	201	// Xe/Isobutane layer (gasvolume)
	202	par_oc[0] = xethick / 2;
	203	pMC->Gsvolu("UT4O", "TRAP", idtmed[1309-1], par_oc, nparoc);
	204	// Cu layer (pad plane)
	205	par_oc[0] = cuthick / 2;
	206	pMC->Gsvolu("UT5O", "TRAP", idtmed[1305-1], par_oc, nparoc);
	207	// G10 layer (support structure)
	208	par_oc[0] = suthick / 2;
	209	pMC->Gsvolu("UT6O", "TRAP", idtmed[1313-1], par_oc, nparoc);
	210	// Cu layer (FEE + signal lines)
	211	par_oc[0] = fethick / 2;
	212	pMC->Gsvolu("UT7O", "TRAP", idtmed[1305-1], par_oc, nparoc);
	213	// PE layer (cooling devices)
	214	par_oc[0] = cothick / 2;
	215	pMC->Gsvolu("UT8O", "TRAP", idtmed[1303-1], par_oc, nparoc);
	216	// Water layer (cooling)
	217	par_oc[0] = wathick / 2;
	218	pMC->Gsvolu("UT9O", "TRAP", idtmed[1314-1], par_oc, nparoc);
	219
	220	//
	221	// The neighbouring chambers
	222	//
	223
	224	// The carbon frame (C)
	225	par_nc[0] = widmi - frame;
	226	par_nc[1] = widma - frame;
	227	par_nc[2] = zlenn / 2;
	228	par_nc[3] = (rmax - rmin) / 2;
	229	pMC->Gsvolu("UTCN", "TRD1", idtmed[1307-1], par_nc, nparnc);
	230
	231	// The inner part (Air)
	232	par_nc[0] -= ccframe;
	233	par_nc[1] -= ccframe;
	234	par_nc[2] -= ccframe;
	235	pMC->Gsvolu("UTIN", "TRD1", idtmed[1302-1], par_nc, nparnc);
	236
	237	// Definition of the six modules within each outer chamber
	238	pMC->Gsdvn("UTMN", "UTIN", nmodul, 3);
	239
	240	// Definition of the layers of each chamber
241	par_nc[0] = -1.;
242	par_nc[1] = -1.;
243	par_nc[2] = -1.;
244	// G10 layer (radiator layer)
245	par_nc[3] = sethick / 2;
246	pMC->Gsvolu("UT0N", "TRD1", idtmed[1313-1], par_nc, nparnc);
247	// CO2 layer (radiator)
248	par_nc[3] = rathick / 2;
249	pMC->Gsvolu("UT1N", "TRD1", idtmed[1312-1], par_nc, nparnc);
250	// PE layer (radiator)
251	par_nc[3] = pethick / 2;
252	pMC->Gsvolu("UT2N", "TRD1", idtmed[1303-1], par_nc, nparnc);
253	// Mylar layer (entrance window + HV cathode)
254	par_nc[3] = mythick / 2;
255	pMC->Gsvolu("UT3N", "TRD1", idtmed[1308-1], par_nc, nparnc);
256	// Xe/Isobutane layer (gasvolume)
257	par_nc[3] = xethick / 2;
258	pMC->Gsvolu("UT4N", "TRD1", idtmed[1309-1], par_nc, nparnc);
259	// Cu layer (pad plane)
260	par_nc[3] = cuthick / 2;
261	pMC->Gsvolu("UT5N", "TRD1", idtmed[1305-1], par_nc, nparnc);
262	// G10 layer (support structure)
263	par_nc[3] = suthick / 2;
264	pMC->Gsvolu("UT6N", "TRD1", idtmed[1313-1], par_nc, nparnc);
265	// Cu layer (FEE + signal lines)
266	par_nc[3] = fethick / 2;
267	pMC->Gsvolu("UT7N", "TRD1", idtmed[1305-1], par_nc, nparnc);
268	// PE layer (cooling devices)
269	par_nc[3] = cothick / 2;
270	pMC->Gsvolu("UT8N", "TRD1", idtmed[1303-1], par_nc, nparnc);
271	// Water layer (cooling)
272	par_nc[3] = wathick / 2;
273	pMC->Gsvolu("UT9N", "TRD1", idtmed[1314-1], par_nc, nparnc);
274
275	//
276	// The inner chamber
277	//
278
279	// The carbon frame (C)
280	par_ic[0] = widmi - frame;
281	par_ic[1] = widma - frame;
282	par_ic[2] = zleni / 2;
283	par_ic[3] = (rmax - rmin) / 2;
284	pMC->Gsvolu("UTCI", "TRD1", idtmed[1307-1], par_ic, nparic);
285
286	// The inner part (Air)
fe4da5cc	287	par_ic[0] -= ccframe;
	288	par_ic[1] -= ccframe;
	289	par_ic[2] -= ccframe;
d3f347ff	290	pMC->Gsvolu("UTII", "TRD1", idtmed[1302-1], par_ic, nparic);
	291
	292	// Definition of the six modules within each outer chamber
fe4da5cc	293	pMC->Gsdvn("UTMI", "UTII", nmodul, 3);
d3f347ff	294
d3f347ff	295	// Definition of the layers of each inner chamber
fe4da5cc	296	par_ic[0] = -1.;
	297	par_ic[1] = -1.;
	298	par_ic[2] = -1.;
d3f347ff	299	// G10 layer (radiator layer)
	300	par_ic[3] = sethick / 2;
	301	pMC->Gsvolu("UT0I", "TRD1", idtmed[1313-1], par_ic, nparic);
	302	// CO2 layer (radiator)
	303	par_ic[3] = rathick / 2;
	304	pMC->Gsvolu("UT1I", "TRD1", idtmed[1312-1], par_ic, nparic);
	305	// PE layer (radiator)
	306	par_ic[3] = pethick / 2;
	307	pMC->Gsvolu("UT2I", "TRD1", idtmed[1303-1], par_ic, nparic);
	308	// Mylar layer (entrance window + HV cathode)
	309	par_ic[3] = mythick / 2;
	310	pMC->Gsvolu("UT3I", "TRD1", idtmed[1308-1], par_ic, nparic);
	311	// Xe/Isobutane layer (gasvolume)
	312	par_ic[3] = xethick / 2;
	313	pMC->Gsvolu("UT4I", "TRD1", idtmed[1309-1], par_ic, nparic);
	314	// Cu layer (pad plane)
	315	par_ic[3] = cuthick / 2;
	316	pMC->Gsvolu("UT5I", "TRD1", idtmed[1305-1], par_ic, nparic);
	317	// G10 layer (support structure)
	318	par_ic[3] = suthick / 2;
	319	pMC->Gsvolu("UT6I", "TRD1", idtmed[1313-1], par_ic, nparic);
	320	// Cu layer (FEE + signal lines)
	321	par_ic[3] = fethick / 2;
	322	pMC->Gsvolu("UT7I", "TRD1", idtmed[1305-1], par_ic, nparic);
	323	// PE layer (cooling devices)
	324	par_ic[3] = cothick / 2;
	325	pMC->Gsvolu("UT8I", "TRD1", idtmed[1303-1], par_ic, nparic);
	326	// Water layer (cooling)
	327	par_ic[3] = wathick / 2;
	328	pMC->Gsvolu("UT9I", "TRD1", idtmed[1314-1], par_ic, nparic);
	329
	330	//////////////////////////////////////////////////////////////////////////
fe4da5cc	331	// Positioning of Volumes
d3f347ff	332	//////////////////////////////////////////////////////////////////////////
	333
	334	// The rotation matrices
	335	AliMatrix(idmat[0], 90., 180., 90., 90., 0., 0.);
	336	AliMatrix(idmat[1], 90., 90., 180., 0., 90., 0.);
	337	AliMatrix(idmat[2], 90., 180., 90., 270., 0., 0.);
	338
	339	// Position of the layers in a TRD module
fe4da5cc	340	f = TMath::Tan(theoc * kDegrad);
d3f347ff	341	pMC->Gspos("UT9O", 1, "UTMO", 0., f*wazpos, wazpos, 0, "ONLY");
	342	pMC->Gspos("UT8O", 1, "UTMO", 0., f*cozpos, cozpos, 0, "ONLY");
	343	pMC->Gspos("UT7O", 1, "UTMO", 0., f*fezpos, fezpos, 0, "ONLY");
	344	pMC->Gspos("UT6O", 1, "UTMO", 0., f*suzpos, suzpos, 0, "ONLY");
fe4da5cc	345	pMC->Gspos("UT5O", 1, "UTMO", 0., f*cuzpos, cuzpos, 0, "ONLY");
	346	pMC->Gspos("UT4O", 1, "UTMO", 0., f*xezpos, xezpos, 0, "ONLY");
	347	pMC->Gspos("UT3O", 1, "UTMO", 0., f*myzpos, myzpos, 0, "ONLY");
	348	pMC->Gspos("UT1O", 1, "UTMO", 0., f*razpos, razpos, 0, "ONLY");
d3f347ff	349	pMC->Gspos("UT0O", 1, "UTMO", 0., f*sezpos, sezpos, 0, "ONLY");
fe4da5cc	350	pMC->Gspos("UT2O", 1, "UT1O", 0., f*pezpos, pezpos, 0, "ONLY");
d3f347ff	351
	352	pMC->Gspos("UT9N", 1, "UTMN", 0., 0., wazpos, 0, "ONLY");
	353	pMC->Gspos("UT8N", 1, "UTMN", 0., 0., cozpos, 0, "ONLY");
	354	pMC->Gspos("UT7N", 1, "UTMN", 0., 0., fezpos, 0, "ONLY");
	355	pMC->Gspos("UT6N", 1, "UTMN", 0., 0., suzpos, 0, "ONLY");
	356	pMC->Gspos("UT5N", 1, "UTMN", 0., 0., cuzpos, 0, "ONLY");
	357	pMC->Gspos("UT4N", 1, "UTMN", 0., 0., xezpos, 0, "ONLY");
	358	pMC->Gspos("UT3N", 1, "UTMN", 0., 0., myzpos, 0, "ONLY");
	359	pMC->Gspos("UT1N", 1, "UTMN", 0., 0., razpos, 0, "ONLY");
	360	pMC->Gspos("UT0N", 1, "UTMN", 0., 0., sezpos, 0, "ONLY");
	361	pMC->Gspos("UT2N", 1, "UT1N", 0., 0., pezpos, 0, "ONLY");
	362
	363	pMC->Gspos("UT9I", 1, "UTMI", 0., 0., wazpos, 0, "ONLY");
	364	pMC->Gspos("UT8I", 1, "UTMI", 0., 0., cozpos, 0, "ONLY");
	365	pMC->Gspos("UT7I", 1, "UTMI", 0., 0., fezpos, 0, "ONLY");
	366	pMC->Gspos("UT6I", 1, "UTMI", 0., 0., suzpos, 0, "ONLY");
	367	pMC->Gspos("UT5I", 1, "UTMI", 0., 0., cuzpos, 0, "ONLY");
	368	pMC->Gspos("UT4I", 1, "UTMI", 0., 0., xezpos, 0, "ONLY");
	369	pMC->Gspos("UT3I", 1, "UTMI", 0., 0., myzpos, 0, "ONLY");
	370	pMC->Gspos("UT1I", 1, "UTMI", 0., 0., razpos, 0, "ONLY");
	371	pMC->Gspos("UT0I", 1, "UTMI", 0., 0., sezpos, 0, "ONLY");
	372	pMC->Gspos("UT2I", 1, "UT1I", 0., 0., pezpos, 0, "ONLY");
	373
	374	// Position of the inner part of the chambers
fe4da5cc	375	xpos = 0.;
d3f347ff	376	ypos = 0.;
fe4da5cc	377	zpos = 0.;
d3f347ff	378	pMC->Gspos("UTII", 1, "UTCI", xpos, ypos, zpos, 0, "ONLY");
	379	pMC->Gspos("UTIN", 1, "UTCN", xpos, ypos, zpos, 0, "ONLY");
	380	pMC->Gspos("UTIO", 1, "UTCO", xpos, ypos, zpos, 0, "ONLY");
	381
	382	// Position of the chambers in the support frame
fe4da5cc	383	xpos = 0.;
d3f347ff	384	ypos = ((zmax1 + zmax2) / 2 + zlenn + zleni / 2) / 2;
fe4da5cc	385	zpos = 0.;
d3f347ff	386	pMC->Gspos("UTCO", 1, "UTRI", xpos, ypos, zpos, idmat[2], "ONLY");
	387	pMC->Gspos("UTCO", 2, "UTRI", xpos,-ypos, zpos, 0 , "ONLY");
	388	xpos = 0.;
	389	ypos = (zlenn + zleni) / 2;
	390	zpos = 0.;
	391	pMC->Gspos("UTCN", 1, "UTRI", xpos, ypos, zpos, 0 , "ONLY");
	392	pMC->Gspos("UTCN", 2, "UTRI", xpos,-ypos, zpos, 0 , "ONLY");
	393	xpos = 0.;
	394	ypos = 0.;
	395	zpos = 0.;
	396	pMC->Gspos("UTCI", 1, "UTRI", xpos, ypos, zpos, 0 , "ONLY");
	397
	398	// Position of the inner part of the detector frame
	399	xpos = (rmax + rmin) / 2;
	400	ypos = 0.;
	401	zpos = 0.;
	402	pMC->Gspos("UTRI", 1, "UTRS", xpos, ypos, zpos, idmat[1], "ONLY");
	403
	404	// Position of the two arms of the detector
fe4da5cc	405	xpos = 0.;
	406	ypos = 0.;
	407	zpos = 0.;
d3f347ff	408	pMC->Gspos("UTRD", 1, "TRD ", xpos, ypos, zpos, 0, "ONLY");
	409	pMC->Gspos("UTRD", 2, "TRD ", xpos, ypos, zpos, idmat[0], "ONLY");
	410
	411	// Position of TRD mother volume in ALICE experiment
	412	xpos = 0.;
fe4da5cc	413	ypos = 0.;
d3f347ff	414	zpos = 0.;
	415	pMC->Gspos("TRD ", 1, "ALIC", xpos, ypos, zpos, 0, "ONLY");
	416
fe4da5cc	417	}
	418
	419	//_____________________________________________________________________________
05e51f55	420	void AliTRDv1::DrawModule()
fe4da5cc	421	{
	422	//
	423	// Draw a shaded view of the Transition Radiation Detector version 1
	424	//
	425
	426	AliMC* pMC = AliMC::GetMC();
	427
	428	// Set everything unseen
	429	pMC->Gsatt("*", "seen", -1);
	430	//
	431	// Set ALIC mother transparent
	432	pMC->Gsatt("ALIC","SEEN",0);
	433	//
	434	// Set the volumes visible
d3f347ff	435	pMC->Gsatt("TRD" ,"SEEN",0);
d3f347ff	436	pMC->Gsatt("UTRD","SEEN",0);
fe4da5cc	437	pMC->Gsatt("UTRS","SEEN",0);
d3f347ff	438	pMC->Gsatt("UTRI","SEEN",0);
fe4da5cc	439	pMC->Gsatt("UTCO","SEEN",0);
	440	pMC->Gsatt("UTIO","SEEN",0);
	441	pMC->Gsatt("UTMO","SEEN",0);
d3f347ff	442	pMC->Gsatt("UTCN","SEEN",0);
	443	pMC->Gsatt("UTIN","SEEN",0);
	444	pMC->Gsatt("UTMN","SEEN",0);
fe4da5cc	445	pMC->Gsatt("UTCI","SEEN",0);
	446	pMC->Gsatt("UTII","SEEN",0);
	447	pMC->Gsatt("UTMI","SEEN",0);
d3f347ff	448	pMC->Gsatt("UT1O","SEEN",1);
	449	pMC->Gsatt("UT4O","SEEN",1);
	450	pMC->Gsatt("UT1N","SEEN",1);
	451	pMC->Gsatt("UT4N","SEEN",1);
fe4da5cc	452	pMC->Gsatt("UT1I","SEEN",1);
	453	pMC->Gsatt("UT4I","SEEN",1);
	454	//
	455	pMC->Gdopt("hide", "on");
	456	pMC->Gdopt("shad", "on");
	457	pMC->Gsatt("*", "fill", 7);
	458	pMC->SetClipBox(".");
	459	pMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
	460	pMC->DefaultRange();
	461	pMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
	462	pMC->Gdhead(1111, "Transition Radiation Detector Version 1");
	463	pMC->Gdman(18, 4, "MAN");
	464	}
	465
	466	//_____________________________________________________________________________
	467	void AliTRDv1::CreateMaterials()
	468	{
	469	//
	470	// Create materials for the Transition Radiation Detector version 1
	471	//
d3f347ff	472	AliTRD::CreateMaterials();
fe4da5cc	473	}
	474
	475	//_____________________________________________________________________________
	476	void AliTRDv1::Init()
	477	{
	478	//
	479	// Initialise the Transition Radiation Detector after the geometry is built
	480	//
	481	AliTRD::Init();
	482	AliMC* pMC = AliMC::GetMC();
d3f347ff	483
	484	// Retrieve the numeric identifier of the sensitive volumes (gas volume)
	485	fIdSens1 = pMC->VolId("UT4I");
	486	fIdSens2 = pMC->VolId("UT4N");
	487	fIdSens3 = pMC->VolId("UT4O");
fe4da5cc	488	}
	489
	490	//_____________________________________________________________________________
	491	void AliTRDv1::StepManager()
	492	{
	493	//
d3f347ff	494	// Procedure called at every step in the TRD
fe4da5cc	495	//
d3f347ff	496
fe4da5cc	497	Int_t vol[3];
d3f347ff	498	Int_t icopy1, icopy2;
d3f347ff	499	Int_t idSens, icSens;
fe4da5cc	500
	501	Float_t hits[4];
	502
	503	TClonesArray &lhits = *fHits;
	504
	505	AliMC* pMC = AliMC::GetMC();
	506
	507	// Use only charged tracks and count them only once per volume
d3f347ff	508	if (pMC->TrackCharge() && pMC->TrackExiting()) {
fe4da5cc	509
	510	// Check on sensitive volume
	511	idSens = pMC->CurrentVol(0,icSens);
	512
d3f347ff	513	// Check on sensitive volume
	514	idSens = pMC->CurrentVol(0,icSens);
	515	if ((idSens == fIdSens1) \|\|
	516	(idSens == fIdSens2) \|\|
	517	(idSens == fIdSens3)) {
fe4da5cc	518
fe4da5cc	519	// The sector number
d3f347ff	520	pMC->CurrentVolOff(5,0,icopy1);
	521	pMC->CurrentVolOff(6,0,icopy2);
	522	if (icopy2 == 1)
	523	vol[0] = icopy1;
	524	else
	525	vol[0] = 6 - icopy1 + 5;
fe4da5cc	526
d3f347ff	527	// The chamber number
	528	// 1: outer left
	529	// 2: neighbouring left
	530	// 3: inner
	531	// 4: neighbouring right
	532	// 5: outer right
	533	pMC->CurrentVolOff(3,0,icopy1);
	534	if (idSens == fIdSens3)
	535	vol[1] = 4 * icopy1 - 3;
	536	else if (idSens == fIdSens2)
	537	vol[1] = 2 * icopy1;
	538	else
	539	vol[1] = 3;
fe4da5cc	540
fe4da5cc	541	// The plane number
fe4da5cc	542	pMC->CurrentVolOff(1,0,icopy1);
fe4da5cc	543	vol[2] = icopy1;
d3f347ff	544
	545	if (fSensSelect) {
	546	Int_t addthishit = 1;
	547	if ((fSensPlane) && (vol[2] != fSensPlane )) addthishit = 0;
	548	if ((fSensChamber) && (vol[1] != fSensChamber)) addthishit = 0;
	549	if ((fSensSector) && (vol[0] != fSensSector )) addthishit = 0;
	550	if (addthishit) {
	551	pMC->TrackPosition(hits);
	552	hits[3] = 0;
	553	new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
	554	}
	555	}
	556	else {
	557	pMC->TrackPosition(hits);
	558	hits[3] = 0;
	559	new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
	560	}
	561
	562	}
	563
fe4da5cc	564	}
d3f347ff	565
fe4da5cc	566	}