[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;
  
  //////////////////////////////////////////////////////////////////////////
  //     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;
  gMC->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;
  gMC->Gsvolu("UTRD", "PGON", idtmed[1301-1], par_ar, nparar);
  gMC->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;
  gMC->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.;
  gMC->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;
  gMC->Gsvolu("UTIO", "TRAP", idtmed[1302-1], par_oc, nparoc);

  // Definition of the six modules within each chamber 
  gMC->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;
  gMC->Gsvolu("UT0O", "TRAP", idtmed[1313-1], par_oc, nparoc);
  // CO2 layer (radiator)
  par_oc[0] = rathick / 2;
  gMC->Gsvolu("UT1O", "TRAP", idtmed[1312-1], par_oc, nparoc);
  // PE layer (radiator)
  par_oc[0] = pethick / 2;
  gMC->Gsvolu("UT2O", "TRAP", idtmed[1303-1], par_oc, nparoc);
  // Mylar layer (entrance window + HV cathode) 
  par_oc[0] = mythick / 2;
  gMC->Gsvolu("UT3O", "TRAP", idtmed[1308-1], par_oc, nparoc);
  // Xe/Isobutane layer (gasvolume)
  par_oc[0] = xethick / 2;
  gMC->Gsvolu("UT4O", "TRAP", idtmed[1309-1], par_oc, nparoc);
  // Cu layer (pad plane)
  par_oc[0] = cuthick / 2;
  gMC->Gsvolu("UT5O", "TRAP", idtmed[1305-1], par_oc, nparoc);
  // G10 layer (support structure)
  par_oc[0] = suthick / 2;
  gMC->Gsvolu("UT6O", "TRAP", idtmed[1313-1], par_oc, nparoc);
  // Cu layer (FEE + signal lines)
  par_oc[0] = fethick / 2;
  gMC->Gsvolu("UT7O", "TRAP", idtmed[1305-1], par_oc, nparoc);
  // PE layer (cooling devices)
  par_oc[0] = cothick / 2;
  gMC->Gsvolu("UT8O", "TRAP", idtmed[1303-1], par_oc, nparoc);
  // Water layer (cooling)
  par_oc[0] = wathick / 2;
  gMC->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;
  gMC->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;
  gMC->Gsvolu("UTIN", "TRD1", idtmed[1302-1], par_nc, nparnc);

  // Definition of the six modules within each outer chamber 
  gMC->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;
  gMC->Gsvolu("UT0N", "TRD1", idtmed[1313-1], par_nc, nparnc);
  // CO2 layer (radiator)
  par_nc[3] = rathick / 2;
  gMC->Gsvolu("UT1N", "TRD1", idtmed[1312-1], par_nc, nparnc);
  // PE layer (radiator)
  par_nc[3] = pethick / 2;
  gMC->Gsvolu("UT2N", "TRD1", idtmed[1303-1], par_nc, nparnc);
  // Mylar layer (entrance window + HV cathode) 
  par_nc[3] = mythick / 2;
  gMC->Gsvolu("UT3N", "TRD1", idtmed[1308-1], par_nc, nparnc);
  // Xe/Isobutane layer (gasvolume)
  par_nc[3] = xethick / 2;
  gMC->Gsvolu("UT4N", "TRD1", idtmed[1309-1], par_nc, nparnc);
  // Cu layer (pad plane)
  par_nc[3] = cuthick / 2;
  gMC->Gsvolu("UT5N", "TRD1", idtmed[1305-1], par_nc, nparnc);
  // G10 layer (support structure)
  par_nc[3] = suthick / 2;
  gMC->Gsvolu("UT6N", "TRD1", idtmed[1313-1], par_nc, nparnc);
  // Cu layer (FEE + signal lines)
  par_nc[3] = fethick / 2;
  gMC->Gsvolu("UT7N", "TRD1", idtmed[1305-1], par_nc, nparnc);
  // PE layer (cooling devices)
  par_nc[3] = cothick / 2;
  gMC->Gsvolu("UT8N", "TRD1", idtmed[1303-1], par_nc, nparnc);
  // Water layer (cooling)
  par_nc[3] = wathick / 2;
  gMC->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;
  gMC->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;
  gMC->Gsvolu("UTII", "TRD1", idtmed[1302-1], par_ic, nparic);

  // Definition of the six modules within each outer chamber 
  gMC->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;
  gMC->Gsvolu("UT0I", "TRD1", idtmed[1313-1], par_ic, nparic);
  // CO2 layer (radiator)
  par_ic[3] = rathick / 2;
  gMC->Gsvolu("UT1I", "TRD1", idtmed[1312-1], par_ic, nparic);
  // PE layer (radiator)
  par_ic[3] = pethick / 2;
  gMC->Gsvolu("UT2I", "TRD1", idtmed[1303-1], par_ic, nparic);
  // Mylar layer (entrance window + HV cathode) 
  par_ic[3] = mythick / 2;
  gMC->Gsvolu("UT3I", "TRD1", idtmed[1308-1], par_ic, nparic);
  // Xe/Isobutane layer (gasvolume)
  par_ic[3] = xethick / 2;
  gMC->Gsvolu("UT4I", "TRD1", idtmed[1309-1], par_ic, nparic);
  // Cu layer (pad plane)
  par_ic[3] = cuthick / 2;
  gMC->Gsvolu("UT5I", "TRD1", idtmed[1305-1], par_ic, nparic);
  // G10 layer (support structure)
  par_ic[3] = suthick / 2;
  gMC->Gsvolu("UT6I", "TRD1", idtmed[1313-1], par_ic, nparic);
  // Cu layer (FEE + signal lines)
  par_ic[3] = fethick / 2;
  gMC->Gsvolu("UT7I", "TRD1", idtmed[1305-1], par_ic, nparic);
  // PE layer (cooling devices)
  par_ic[3] = cothick / 2;
  gMC->Gsvolu("UT8I", "TRD1", idtmed[1303-1], par_ic, nparic);
  // Water layer (cooling)
  par_ic[3] = wathick / 2;
  gMC->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);
  gMC->Gspos("UT9O", 1, "UTMO", 0., f*wazpos, wazpos, 0, "ONLY");
  gMC->Gspos("UT8O", 1, "UTMO", 0., f*cozpos, cozpos, 0, "ONLY");
  gMC->Gspos("UT7O", 1, "UTMO", 0., f*fezpos, fezpos, 0, "ONLY");
  gMC->Gspos("UT6O", 1, "UTMO", 0., f*suzpos, suzpos, 0, "ONLY");
  gMC->Gspos("UT5O", 1, "UTMO", 0., f*cuzpos, cuzpos, 0, "ONLY");
  gMC->Gspos("UT4O", 1, "UTMO", 0., f*xezpos, xezpos, 0, "ONLY");
  gMC->Gspos("UT3O", 1, "UTMO", 0., f*myzpos, myzpos, 0, "ONLY");
  gMC->Gspos("UT1O", 1, "UTMO", 0., f*razpos, razpos, 0, "ONLY");
  gMC->Gspos("UT0O", 1, "UTMO", 0., f*sezpos, sezpos, 0, "ONLY");
  gMC->Gspos("UT2O", 1, "UT1O", 0., f*pezpos, pezpos, 0, "ONLY");

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

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

  // Position of the inner part of the chambers 
  xpos = 0.;
  ypos = 0.;
  zpos = 0.;
  gMC->Gspos("UTII", 1, "UTCI", xpos, ypos, zpos, 0, "ONLY");
  gMC->Gspos("UTIN", 1, "UTCN", xpos, ypos, zpos, 0, "ONLY");
  gMC->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.;
  gMC->Gspos("UTCO", 1, "UTRI", xpos, ypos, zpos, idmat[2], "ONLY");
  gMC->Gspos("UTCO", 2, "UTRI", xpos,-ypos, zpos,       0 , "ONLY");
  xpos = 0.;
  ypos = (zlenn + zleni) / 2;
  zpos = 0.;
  gMC->Gspos("UTCN", 1, "UTRI", xpos, ypos, zpos,       0 , "ONLY");
  gMC->Gspos("UTCN", 2, "UTRI", xpos,-ypos, zpos,       0 , "ONLY");
  xpos = 0.;
  ypos = 0.;
  zpos = 0.;
  gMC->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.;
  gMC->Gspos("UTRI", 1, "UTRS", xpos, ypos, zpos, idmat[1], "ONLY");

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

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

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

  // Set everything unseen
  gMC->Gsatt("*", "seen", -1);
  // 
  // Set ALIC mother transparent
  gMC->Gsatt("ALIC","SEEN",0);
  //
  // Set the volumes visible
  gMC->Gsatt("TRD" ,"SEEN",0);
  gMC->Gsatt("UTRD","SEEN",0);
  gMC->Gsatt("UTRS","SEEN",0);
  gMC->Gsatt("UTRI","SEEN",0);
  gMC->Gsatt("UTCO","SEEN",0);
  gMC->Gsatt("UTIO","SEEN",0);
  gMC->Gsatt("UTMO","SEEN",0);
  gMC->Gsatt("UTCN","SEEN",0);
  gMC->Gsatt("UTIN","SEEN",0);
  gMC->Gsatt("UTMN","SEEN",0);
  gMC->Gsatt("UTCI","SEEN",0);
  gMC->Gsatt("UTII","SEEN",0);
  gMC->Gsatt("UTMI","SEEN",0);
  gMC->Gsatt("UT1O","SEEN",1);
  gMC->Gsatt("UT4O","SEEN",1);
  gMC->Gsatt("UT1N","SEEN",1);
  gMC->Gsatt("UT4N","SEEN",1);
  gMC->Gsatt("UT1I","SEEN",1);
  gMC->Gsatt("UT4I","SEEN",1);
  //
  gMC->Gdopt("hide", "on");
  gMC->Gdopt("shad", "on");
  gMC->Gsatt("*", "fill", 7);
  gMC->SetClipBox(".");
  gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
  gMC->DefaultRange();
  gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
  gMC->Gdhead(1111, "Transition Radiation Detector Version 1");
  gMC->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();
  // Retrieve the numeric identifier of the sensitive volumes (gas volume)
  fIdSens1 = gMC->VolId("UT4I");
  fIdSens2 = gMC->VolId("UT4N");
  fIdSens3 = gMC->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; 
  TLorentzVector pos;
  
  Float_t       hits[4];
  
  TClonesArray &lhits = *fHits;

  // Use only charged tracks and count them only once per volume
  if (gMC->TrackCharge() && gMC->IsTrackExiting()) {
    
    // Check on sensitive volume
    idSens = gMC->CurrentVolID(icSens);

    // Check on sensitive volume
    idSens = gMC->CurrentVolID(icSens);
    if ((idSens == fIdSens1) || 
        (idSens == fIdSens2) ||
        (idSens == fIdSens3)) { 
      
      // The sector number
      gMC->CurrentVolOffID(5,icopy1);
      gMC->CurrentVolOffID(6,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
      gMC->CurrentVolOffID(3,icopy1);
      if      (idSens == fIdSens3)
        vol[1] = 4 * icopy1 - 3; 
      else if (idSens == fIdSens2)
        vol[1] = 2 * icopy1;
      else 
        vol[1] = 3;
      
      // The plane number
      gMC->CurrentVolOffID(1,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) {
          gMC->TrackPosition(pos);
	  hits[0] = pos[0];
	  hits[1] = pos[1];
	  hits[2] = pos[2];
          hits[3] = 0;
          new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
	}
      }
      else {      
	gMC->TrackPosition(pos);
	hits[0] = pos[0];
	hits[1] = pos[1];
	hits[2] = pos[2];
        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
d3f347ff	96	//////////////////////////////////////////////////////////////////////////
	97	// Definition of Volumes
	98	//////////////////////////////////////////////////////////////////////////
	99
	100	// Definition of the mother volume for the TRD (Air)
	101	par_mo[0] = 0.;
fe4da5cc	102	par_mo[1] = 360.;
	103	par_mo[2] = nsect;
	104	par_mo[3] = 2.;
	105	par_mo[4] = -zmax1;
	106	par_mo[5] = rmin;
	107	par_mo[6] = rmax;
d3f347ff	108	par_mo[7] = zmax1;
fe4da5cc	109	par_mo[8] = rmin;
fe4da5cc	110	par_mo[9] = rmax;
cfce8870	111	gMC->Gsvolu("TRD ", "PGON", idtmed[1302-1], par_mo, nparmo);
d3f347ff	112
	113	Float_t phisec = 360. / nsect;
	114	// Definition of the two detector arms (Al)
	115	par_ar[0] = 120.;
	116	par_ar[1] = narmsec * phisec;
	117	par_ar[2] = narmsec;
	118	par_ar[3] = 2.;
	119	par_ar[4] = -zmax1;
	120	par_ar[5] = rmin;
	121	par_ar[6] = rmax;
	122	par_ar[7] = zmax1;
	123	par_ar[8] = rmin;
	124	par_ar[9] = rmax;
cfce8870	125	gMC->Gsvolu("UTRD", "PGON", idtmed[1301-1], par_ar, nparar);
cfce8870	126	gMC->Gsdvn("UTRS", "UTRD", narmsec, 2);
d3f347ff	127
d3f347ff	128	// The minimal width of a sector in rphi-direction
c2ba0804	129	Float_t widmi = rmin * TMath::Tan(kPI/nsect);
d3f347ff	130	// The maximal width of a sector in rphi-direction
c2ba0804	131	Float_t widma = rmax * TMath::Tan(kPI/nsect);
d3f347ff	132	// The total thickness of the spaceframe (Al + Air)
	133	Float_t frame = widmi - (widpl1 / 2);
	134
	135	// Definition of the inner part of the detector frame (Air)
	136	par_fr[0] = widmi - alframe / 2;
	137	par_fr[1] = widma - alframe / 2;
	138	par_fr[2] = zmax1;
	139	par_fr[3] = (rmax - rmin) / 2;
cfce8870	140	gMC->Gsvolu("UTRI", "TRD1", idtmed[1302-1], par_fr, nparfr);
d3f347ff	141
	142	//
	143	// The outer chambers
	144	//
	145
	146	// Calculate some shape-parameter
	147	Float_t tanzr = (zmax1 - zmax2) / (rmax - rmin);
	148	Float_t theoc = -kRaddeg * TMath::ATan(tanzr / 2);
	149
	150	// The carbon frame (C)
	151	par_oc[0] = (rmax - rmin) / 2;
	152	par_oc[1] = theoc;
	153	par_oc[2] = 90.;
	154	par_oc[3] = (zmax2 - zlenn - zleni/2) / 2;
	155	par_oc[4] = widmi - frame;
	156	par_oc[5] = widmi - frame;
	157	par_oc[6] = 0.;
	158	par_oc[7] = (zmax1 - zlenn - zleni/2) / 2;
	159	par_oc[8] = widma - frame;
	160	par_oc[9] = widma - frame;
fe4da5cc	161	par_oc[10] = 0.;
cfce8870	162	gMC->Gsvolu("UTCO", "TRAP", idtmed[1307-1], par_oc, nparoc);
d3f347ff	163
d3f347ff	164	// The inner part (Air)
fe4da5cc	165	par_oc[3] -= ccframe;
fe4da5cc	166	par_oc[4] -= ccframe;
d3f347ff	167	par_oc[5] -= ccframe;
fe4da5cc	168	par_oc[7] -= ccframe;
	169	par_oc[8] -= ccframe;
	170	par_oc[9] -= ccframe;
cfce8870	171	gMC->Gsvolu("UTIO", "TRAP", idtmed[1302-1], par_oc, nparoc);
d3f347ff	172
d3f347ff	173	// Definition of the six modules within each chamber
cfce8870	174	gMC->Gsdvn("UTMO", "UTIO", nmodul, 3);
d3f347ff	175
	176	// Definition of the layers of each chamber
	177	par_oc[1] = theoc;
	178	par_oc[2] = 90.;
	179	par_oc[3] = -1.;
	180	par_oc[4] = -1.;
	181	par_oc[5] = -1.;
	182	par_oc[6] = 0.;
	183	par_oc[7] = -1.;
	184	par_oc[8] = -1.;
	185	par_oc[9] = -1.;
	186	par_oc[10] = 0.;
	187	// G10 layer (radiator layer)
	188	par_oc[0] = sethick / 2;
cfce8870	189	gMC->Gsvolu("UT0O", "TRAP", idtmed[1313-1], par_oc, nparoc);
d3f347ff	190	// CO2 layer (radiator)
d3f347ff	191	par_oc[0] = rathick / 2;
cfce8870	192	gMC->Gsvolu("UT1O", "TRAP", idtmed[1312-1], par_oc, nparoc);
d3f347ff	193	// PE layer (radiator)
d3f347ff	194	par_oc[0] = pethick / 2;
cfce8870	195	gMC->Gsvolu("UT2O", "TRAP", idtmed[1303-1], par_oc, nparoc);
d3f347ff	196	// Mylar layer (entrance window + HV cathode)
d3f347ff	197	par_oc[0] = mythick / 2;
cfce8870	198	gMC->Gsvolu("UT3O", "TRAP", idtmed[1308-1], par_oc, nparoc);
d3f347ff	199	// Xe/Isobutane layer (gasvolume)
d3f347ff	200	par_oc[0] = xethick / 2;
cfce8870	201	gMC->Gsvolu("UT4O", "TRAP", idtmed[1309-1], par_oc, nparoc);
d3f347ff	202	// Cu layer (pad plane)
d3f347ff	203	par_oc[0] = cuthick / 2;
cfce8870	204	gMC->Gsvolu("UT5O", "TRAP", idtmed[1305-1], par_oc, nparoc);
d3f347ff	205	// G10 layer (support structure)
d3f347ff	206	par_oc[0] = suthick / 2;
cfce8870	207	gMC->Gsvolu("UT6O", "TRAP", idtmed[1313-1], par_oc, nparoc);
d3f347ff	208	// Cu layer (FEE + signal lines)
d3f347ff	209	par_oc[0] = fethick / 2;
cfce8870	210	gMC->Gsvolu("UT7O", "TRAP", idtmed[1305-1], par_oc, nparoc);
d3f347ff	211	// PE layer (cooling devices)
d3f347ff	212	par_oc[0] = cothick / 2;
cfce8870	213	gMC->Gsvolu("UT8O", "TRAP", idtmed[1303-1], par_oc, nparoc);
d3f347ff	214	// Water layer (cooling)
d3f347ff	215	par_oc[0] = wathick / 2;
cfce8870	216	gMC->Gsvolu("UT9O", "TRAP", idtmed[1314-1], par_oc, nparoc);
d3f347ff	217
	218	//
	219	// The neighbouring chambers
	220	//
	221
	222	// The carbon frame (C)
	223	par_nc[0] = widmi - frame;
	224	par_nc[1] = widma - frame;
	225	par_nc[2] = zlenn / 2;
	226	par_nc[3] = (rmax - rmin) / 2;
cfce8870	227	gMC->Gsvolu("UTCN", "TRD1", idtmed[1307-1], par_nc, nparnc);
d3f347ff	228
	229	// The inner part (Air)
	230	par_nc[0] -= ccframe;
	231	par_nc[1] -= ccframe;
	232	par_nc[2] -= ccframe;
cfce8870	233	gMC->Gsvolu("UTIN", "TRD1", idtmed[1302-1], par_nc, nparnc);
d3f347ff	234
d3f347ff	235	// Definition of the six modules within each outer chamber
cfce8870	236	gMC->Gsdvn("UTMN", "UTIN", nmodul, 3);
d3f347ff	237
	238	// Definition of the layers of each chamber
	239	par_nc[0] = -1.;
	240	par_nc[1] = -1.;
	241	par_nc[2] = -1.;
	242	// G10 layer (radiator layer)
	243	par_nc[3] = sethick / 2;
cfce8870	244	gMC->Gsvolu("UT0N", "TRD1", idtmed[1313-1], par_nc, nparnc);
d3f347ff	245	// CO2 layer (radiator)
d3f347ff	246	par_nc[3] = rathick / 2;
cfce8870	247	gMC->Gsvolu("UT1N", "TRD1", idtmed[1312-1], par_nc, nparnc);
d3f347ff	248	// PE layer (radiator)
d3f347ff	249	par_nc[3] = pethick / 2;
cfce8870	250	gMC->Gsvolu("UT2N", "TRD1", idtmed[1303-1], par_nc, nparnc);
d3f347ff	251	// Mylar layer (entrance window + HV cathode)
d3f347ff	252	par_nc[3] = mythick / 2;
cfce8870	253	gMC->Gsvolu("UT3N", "TRD1", idtmed[1308-1], par_nc, nparnc);
d3f347ff	254	// Xe/Isobutane layer (gasvolume)
d3f347ff	255	par_nc[3] = xethick / 2;
cfce8870	256	gMC->Gsvolu("UT4N", "TRD1", idtmed[1309-1], par_nc, nparnc);
d3f347ff	257	// Cu layer (pad plane)
d3f347ff	258	par_nc[3] = cuthick / 2;
cfce8870	259	gMC->Gsvolu("UT5N", "TRD1", idtmed[1305-1], par_nc, nparnc);
d3f347ff	260	// G10 layer (support structure)
d3f347ff	261	par_nc[3] = suthick / 2;
cfce8870	262	gMC->Gsvolu("UT6N", "TRD1", idtmed[1313-1], par_nc, nparnc);
d3f347ff	263	// Cu layer (FEE + signal lines)
d3f347ff	264	par_nc[3] = fethick / 2;
cfce8870	265	gMC->Gsvolu("UT7N", "TRD1", idtmed[1305-1], par_nc, nparnc);
d3f347ff	266	// PE layer (cooling devices)
d3f347ff	267	par_nc[3] = cothick / 2;
cfce8870	268	gMC->Gsvolu("UT8N", "TRD1", idtmed[1303-1], par_nc, nparnc);
d3f347ff	269	// Water layer (cooling)
d3f347ff	270	par_nc[3] = wathick / 2;
cfce8870	271	gMC->Gsvolu("UT9N", "TRD1", idtmed[1314-1], par_nc, nparnc);
d3f347ff	272
	273	//
	274	// The inner chamber
	275	//
	276
	277	// The carbon frame (C)
	278	par_ic[0] = widmi - frame;
	279	par_ic[1] = widma - frame;
	280	par_ic[2] = zleni / 2;
	281	par_ic[3] = (rmax - rmin) / 2;
cfce8870	282	gMC->Gsvolu("UTCI", "TRD1", idtmed[1307-1], par_ic, nparic);
d3f347ff	283
d3f347ff	284	// The inner part (Air)
fe4da5cc	285	par_ic[0] -= ccframe;
	286	par_ic[1] -= ccframe;
	287	par_ic[2] -= ccframe;
cfce8870	288	gMC->Gsvolu("UTII", "TRD1", idtmed[1302-1], par_ic, nparic);
d3f347ff	289
d3f347ff	290	// Definition of the six modules within each outer chamber
cfce8870	291	gMC->Gsdvn("UTMI", "UTII", nmodul, 3);
d3f347ff	292
d3f347ff	293	// Definition of the layers of each inner chamber
fe4da5cc	294	par_ic[0] = -1.;
	295	par_ic[1] = -1.;
	296	par_ic[2] = -1.;
d3f347ff	297	// G10 layer (radiator layer)
d3f347ff	298	par_ic[3] = sethick / 2;
cfce8870	299	gMC->Gsvolu("UT0I", "TRD1", idtmed[1313-1], par_ic, nparic);
d3f347ff	300	// CO2 layer (radiator)
d3f347ff	301	par_ic[3] = rathick / 2;
cfce8870	302	gMC->Gsvolu("UT1I", "TRD1", idtmed[1312-1], par_ic, nparic);
d3f347ff	303	// PE layer (radiator)
d3f347ff	304	par_ic[3] = pethick / 2;
cfce8870	305	gMC->Gsvolu("UT2I", "TRD1", idtmed[1303-1], par_ic, nparic);
d3f347ff	306	// Mylar layer (entrance window + HV cathode)
d3f347ff	307	par_ic[3] = mythick / 2;
cfce8870	308	gMC->Gsvolu("UT3I", "TRD1", idtmed[1308-1], par_ic, nparic);
d3f347ff	309	// Xe/Isobutane layer (gasvolume)
d3f347ff	310	par_ic[3] = xethick / 2;
cfce8870	311	gMC->Gsvolu("UT4I", "TRD1", idtmed[1309-1], par_ic, nparic);
d3f347ff	312	// Cu layer (pad plane)
d3f347ff	313	par_ic[3] = cuthick / 2;
cfce8870	314	gMC->Gsvolu("UT5I", "TRD1", idtmed[1305-1], par_ic, nparic);
d3f347ff	315	// G10 layer (support structure)
d3f347ff	316	par_ic[3] = suthick / 2;
cfce8870	317	gMC->Gsvolu("UT6I", "TRD1", idtmed[1313-1], par_ic, nparic);
d3f347ff	318	// Cu layer (FEE + signal lines)
d3f347ff	319	par_ic[3] = fethick / 2;
cfce8870	320	gMC->Gsvolu("UT7I", "TRD1", idtmed[1305-1], par_ic, nparic);
d3f347ff	321	// PE layer (cooling devices)
d3f347ff	322	par_ic[3] = cothick / 2;
cfce8870	323	gMC->Gsvolu("UT8I", "TRD1", idtmed[1303-1], par_ic, nparic);
d3f347ff	324	// Water layer (cooling)
d3f347ff	325	par_ic[3] = wathick / 2;
cfce8870	326	gMC->Gsvolu("UT9I", "TRD1", idtmed[1314-1], par_ic, nparic);
d3f347ff	327
d3f347ff	328	//////////////////////////////////////////////////////////////////////////
fe4da5cc	329	// Positioning of Volumes
d3f347ff	330	//////////////////////////////////////////////////////////////////////////
	331
	332	// The rotation matrices
	333	AliMatrix(idmat[0], 90., 180., 90., 90., 0., 0.);
	334	AliMatrix(idmat[1], 90., 90., 180., 0., 90., 0.);
	335	AliMatrix(idmat[2], 90., 180., 90., 270., 0., 0.);
	336
	337	// Position of the layers in a TRD module
fe4da5cc	338	f = TMath::Tan(theoc * kDegrad);
cfce8870	339	gMC->Gspos("UT9O", 1, "UTMO", 0., f*wazpos, wazpos, 0, "ONLY");
	340	gMC->Gspos("UT8O", 1, "UTMO", 0., f*cozpos, cozpos, 0, "ONLY");
	341	gMC->Gspos("UT7O", 1, "UTMO", 0., f*fezpos, fezpos, 0, "ONLY");
	342	gMC->Gspos("UT6O", 1, "UTMO", 0., f*suzpos, suzpos, 0, "ONLY");
	343	gMC->Gspos("UT5O", 1, "UTMO", 0., f*cuzpos, cuzpos, 0, "ONLY");
	344	gMC->Gspos("UT4O", 1, "UTMO", 0., f*xezpos, xezpos, 0, "ONLY");
	345	gMC->Gspos("UT3O", 1, "UTMO", 0., f*myzpos, myzpos, 0, "ONLY");
	346	gMC->Gspos("UT1O", 1, "UTMO", 0., f*razpos, razpos, 0, "ONLY");
	347	gMC->Gspos("UT0O", 1, "UTMO", 0., f*sezpos, sezpos, 0, "ONLY");
	348	gMC->Gspos("UT2O", 1, "UT1O", 0., f*pezpos, pezpos, 0, "ONLY");
	349
	350	gMC->Gspos("UT9N", 1, "UTMN", 0., 0., wazpos, 0, "ONLY");
	351	gMC->Gspos("UT8N", 1, "UTMN", 0., 0., cozpos, 0, "ONLY");
	352	gMC->Gspos("UT7N", 1, "UTMN", 0., 0., fezpos, 0, "ONLY");
	353	gMC->Gspos("UT6N", 1, "UTMN", 0., 0., suzpos, 0, "ONLY");
	354	gMC->Gspos("UT5N", 1, "UTMN", 0., 0., cuzpos, 0, "ONLY");
	355	gMC->Gspos("UT4N", 1, "UTMN", 0., 0., xezpos, 0, "ONLY");
	356	gMC->Gspos("UT3N", 1, "UTMN", 0., 0., myzpos, 0, "ONLY");
	357	gMC->Gspos("UT1N", 1, "UTMN", 0., 0., razpos, 0, "ONLY");
	358	gMC->Gspos("UT0N", 1, "UTMN", 0., 0., sezpos, 0, "ONLY");
	359	gMC->Gspos("UT2N", 1, "UT1N", 0., 0., pezpos, 0, "ONLY");
	360
	361	gMC->Gspos("UT9I", 1, "UTMI", 0., 0., wazpos, 0, "ONLY");
	362	gMC->Gspos("UT8I", 1, "UTMI", 0., 0., cozpos, 0, "ONLY");
	363	gMC->Gspos("UT7I", 1, "UTMI", 0., 0., fezpos, 0, "ONLY");
	364	gMC->Gspos("UT6I", 1, "UTMI", 0., 0., suzpos, 0, "ONLY");
	365	gMC->Gspos("UT5I", 1, "UTMI", 0., 0., cuzpos, 0, "ONLY");
	366	gMC->Gspos("UT4I", 1, "UTMI", 0., 0., xezpos, 0, "ONLY");
	367	gMC->Gspos("UT3I", 1, "UTMI", 0., 0., myzpos, 0, "ONLY");
	368	gMC->Gspos("UT1I", 1, "UTMI", 0., 0., razpos, 0, "ONLY");
	369	gMC->Gspos("UT0I", 1, "UTMI", 0., 0., sezpos, 0, "ONLY");
	370	gMC->Gspos("UT2I", 1, "UT1I", 0., 0., pezpos, 0, "ONLY");
d3f347ff	371
d3f347ff	372	// Position of the inner part of the chambers
fe4da5cc	373	xpos = 0.;
d3f347ff	374	ypos = 0.;
fe4da5cc	375	zpos = 0.;
cfce8870	376	gMC->Gspos("UTII", 1, "UTCI", xpos, ypos, zpos, 0, "ONLY");
	377	gMC->Gspos("UTIN", 1, "UTCN", xpos, ypos, zpos, 0, "ONLY");
	378	gMC->Gspos("UTIO", 1, "UTCO", xpos, ypos, zpos, 0, "ONLY");
d3f347ff	379
d3f347ff	380	// Position of the chambers in the support frame
fe4da5cc	381	xpos = 0.;
d3f347ff	382	ypos = ((zmax1 + zmax2) / 2 + zlenn + zleni / 2) / 2;
fe4da5cc	383	zpos = 0.;
cfce8870	384	gMC->Gspos("UTCO", 1, "UTRI", xpos, ypos, zpos, idmat[2], "ONLY");
cfce8870	385	gMC->Gspos("UTCO", 2, "UTRI", xpos,-ypos, zpos, 0 , "ONLY");
d3f347ff	386	xpos = 0.;
	387	ypos = (zlenn + zleni) / 2;
	388	zpos = 0.;
cfce8870	389	gMC->Gspos("UTCN", 1, "UTRI", xpos, ypos, zpos, 0 , "ONLY");
cfce8870	390	gMC->Gspos("UTCN", 2, "UTRI", xpos,-ypos, zpos, 0 , "ONLY");
d3f347ff	391	xpos = 0.;
	392	ypos = 0.;
	393	zpos = 0.;
cfce8870	394	gMC->Gspos("UTCI", 1, "UTRI", xpos, ypos, zpos, 0 , "ONLY");
d3f347ff	395
	396	// Position of the inner part of the detector frame
	397	xpos = (rmax + rmin) / 2;
	398	ypos = 0.;
	399	zpos = 0.;
cfce8870	400	gMC->Gspos("UTRI", 1, "UTRS", xpos, ypos, zpos, idmat[1], "ONLY");
d3f347ff	401
d3f347ff	402	// Position of the two arms of the detector
fe4da5cc	403	xpos = 0.;
	404	ypos = 0.;
	405	zpos = 0.;
cfce8870	406	gMC->Gspos("UTRD", 1, "TRD ", xpos, ypos, zpos, 0, "ONLY");
cfce8870	407	gMC->Gspos("UTRD", 2, "TRD ", xpos, ypos, zpos, idmat[0], "ONLY");
d3f347ff	408
	409	// Position of TRD mother volume in ALICE experiment
	410	xpos = 0.;
fe4da5cc	411	ypos = 0.;
d3f347ff	412	zpos = 0.;
cfce8870	413	gMC->Gspos("TRD ", 1, "ALIC", xpos, ypos, zpos, 0, "ONLY");
d3f347ff	414
fe4da5cc	415	}
	416
	417	//_____________________________________________________________________________
05e51f55	418	void AliTRDv1::DrawModule()
fe4da5cc	419	{
	420	//
	421	// Draw a shaded view of the Transition Radiation Detector version 1
	422	//
	423
fe4da5cc	424	// Set everything unseen
cfce8870	425	gMC->Gsatt("*", "seen", -1);
fe4da5cc	426	//
fe4da5cc	427	// Set ALIC mother transparent
cfce8870	428	gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc	429	//
fe4da5cc	430	// Set the volumes visible
cfce8870	431	gMC->Gsatt("TRD" ,"SEEN",0);
	432	gMC->Gsatt("UTRD","SEEN",0);
	433	gMC->Gsatt("UTRS","SEEN",0);
	434	gMC->Gsatt("UTRI","SEEN",0);
	435	gMC->Gsatt("UTCO","SEEN",0);
	436	gMC->Gsatt("UTIO","SEEN",0);
	437	gMC->Gsatt("UTMO","SEEN",0);
	438	gMC->Gsatt("UTCN","SEEN",0);
	439	gMC->Gsatt("UTIN","SEEN",0);
	440	gMC->Gsatt("UTMN","SEEN",0);
	441	gMC->Gsatt("UTCI","SEEN",0);
	442	gMC->Gsatt("UTII","SEEN",0);
	443	gMC->Gsatt("UTMI","SEEN",0);
	444	gMC->Gsatt("UT1O","SEEN",1);
	445	gMC->Gsatt("UT4O","SEEN",1);
	446	gMC->Gsatt("UT1N","SEEN",1);
	447	gMC->Gsatt("UT4N","SEEN",1);
	448	gMC->Gsatt("UT1I","SEEN",1);
	449	gMC->Gsatt("UT4I","SEEN",1);
fe4da5cc	450	//
cfce8870	451	gMC->Gdopt("hide", "on");
	452	gMC->Gdopt("shad", "on");
	453	gMC->Gsatt("*", "fill", 7);
	454	gMC->SetClipBox(".");
	455	gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
	456	gMC->DefaultRange();
	457	gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
	458	gMC->Gdhead(1111, "Transition Radiation Detector Version 1");
	459	gMC->Gdman(18, 4, "MAN");
fe4da5cc	460	}
	461
	462	//_____________________________________________________________________________
	463	void AliTRDv1::CreateMaterials()
	464	{
	465	//
	466	// Create materials for the Transition Radiation Detector version 1
	467	//
d3f347ff	468	AliTRD::CreateMaterials();
fe4da5cc	469	}
	470
	471	//_____________________________________________________________________________
	472	void AliTRDv1::Init()
	473	{
	474	//
	475	// Initialise the Transition Radiation Detector after the geometry is built
	476	//
	477	AliTRD::Init();
d3f347ff	478	// Retrieve the numeric identifier of the sensitive volumes (gas volume)
cfce8870	479	fIdSens1 = gMC->VolId("UT4I");
	480	fIdSens2 = gMC->VolId("UT4N");
	481	fIdSens3 = gMC->VolId("UT4O");
fe4da5cc	482	}
	483
	484	//_____________________________________________________________________________
	485	void AliTRDv1::StepManager()
	486	{
	487	//
d3f347ff	488	// Procedure called at every step in the TRD
fe4da5cc	489	//
d3f347ff	490
fe4da5cc	491	Int_t vol[3];
d3f347ff	492	Int_t icopy1, icopy2;
d3f347ff	493	Int_t idSens, icSens;
0a6d8768	494	TLorentzVector pos;
fe4da5cc	495
	496	Float_t hits[4];
	497
	498	TClonesArray &lhits = *fHits;
	499
fe4da5cc	500	// Use only charged tracks and count them only once per volume
0a6d8768	501	if (gMC->TrackCharge() && gMC->IsTrackExiting()) {
fe4da5cc	502
fe4da5cc	503	// Check on sensitive volume
0a6d8768	504	idSens = gMC->CurrentVolID(icSens);
fe4da5cc	505
d3f347ff	506	// Check on sensitive volume
0a6d8768	507	idSens = gMC->CurrentVolID(icSens);
d3f347ff	508	if ((idSens == fIdSens1) \|\|
	509	(idSens == fIdSens2) \|\|
	510	(idSens == fIdSens3)) {
fe4da5cc	511
fe4da5cc	512	// The sector number
0a6d8768	513	gMC->CurrentVolOffID(5,icopy1);
0a6d8768	514	gMC->CurrentVolOffID(6,icopy2);
d3f347ff	515	if (icopy2 == 1)
	516	vol[0] = icopy1;
	517	else
	518	vol[0] = 6 - icopy1 + 5;
fe4da5cc	519
d3f347ff	520	// The chamber number
	521	// 1: outer left
	522	// 2: neighbouring left
	523	// 3: inner
	524	// 4: neighbouring right
	525	// 5: outer right
0a6d8768	526	gMC->CurrentVolOffID(3,icopy1);
d3f347ff	527	if (idSens == fIdSens3)
	528	vol[1] = 4 * icopy1 - 3;
	529	else if (idSens == fIdSens2)
	530	vol[1] = 2 * icopy1;
	531	else
	532	vol[1] = 3;
fe4da5cc	533
fe4da5cc	534	// The plane number
0a6d8768	535	gMC->CurrentVolOffID(1,icopy1);
fe4da5cc	536	vol[2] = icopy1;
d3f347ff	537
	538	if (fSensSelect) {
	539	Int_t addthishit = 1;
	540	if ((fSensPlane) && (vol[2] != fSensPlane )) addthishit = 0;
	541	if ((fSensChamber) && (vol[1] != fSensChamber)) addthishit = 0;
	542	if ((fSensSector) && (vol[0] != fSensSector )) addthishit = 0;
	543	if (addthishit) {
0a6d8768	544	gMC->TrackPosition(pos);
	545	hits[0] = pos[0];
	546	hits[1] = pos[1];
	547	hits[2] = pos[2];
d3f347ff	548	hits[3] = 0;
	549	new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
	550	}
	551	}
	552	else {
0a6d8768	553	gMC->TrackPosition(pos);
	554	hits[0] = pos[0];
	555	hits[1] = pos[1];
	556	hits[2] = pos[2];
d3f347ff	557	hits[3] = 0;
	558	new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
	559	}
	560
	561	}
	562
fe4da5cc	563	}
d3f347ff	564
fe4da5cc	565	}