///////////////////////////////////////////////////////////////////////////////
// //
// Transition Radiation Detector version 0 -- coarse simulation //
// //
//Begin_Html
/*
*/
//End_Html
// //
// //
///////////////////////////////////////////////////////////////////////////////
#include
#include
#include
#include "AliTRDv0.h"
#include "AliRun.h"
#include "AliMC.h"
#include "AliConst.h"
ClassImp(AliTRDv0)
//_____________________________________________________________________________
AliTRDv0::AliTRDv0(const char *name, const char *title)
:AliTRD(name, title)
{
//
// Standard constructor for Transition Radiation Detector version 0
//
fIdSens1 = fIdSens2 = fIdSens3 = 0;
}
//_____________________________________________________________________________
void AliTRDv0::CreateGeometry()
{
//
// Create the GEANT geometry for the Transition Radiation Detector
// --- The coarse geometry of the TRD, that can be used for background
// studies. This version covers the full azimuth.
// --- Author : Christoph Blume (GSI) 17/5/99
//
// --- Volume names :
// TRD --> Mother TRD volume (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
/*
*/
//End_Html
//Begin_Html
/*
*/
//End_Html
Float_t xpos, ypos, zpos, f;
Int_t idmat[2];
const Int_t nparmo = 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_fr[nparfr];
Float_t par_ic[nparic];
Float_t par_nc[nparnc];
Float_t par_oc[nparoc];
Int_t *idtmed = gAlice->Idtmed();
AliMC* pMC = AliMC::GetMC();
//////////////////////////////////////////////////////////////////////////
// Definition of Volumes
//////////////////////////////////////////////////////////////////////////
// Definition of the mother volume for the TRD (Al)
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[1301-1], par_mo, nparmo);
pMC->Gsdvn("UTRS", "TRD ", nsect, 2);
// The minimal width of a sector in rphi-direction
Float_t widmi = rmin * TMath::Sin(kPI/nsect);
// The maximal width of a sector in rphi-direction
Float_t widma = rmax * TMath::Sin(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., 90., 180., 0., 90., 0.);
AliMatrix(idmat[1], 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[1], "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[0], "ONLY");
// Position of the TRD mother volume in the ALICE experiment
xpos = 0.;
ypos = 0.;
zpos = 0.;
pMC->Gspos("TRD ", 1, "ALIC", xpos, ypos, zpos, 0, "ONLY");
}
//_____________________________________________________________________________
void AliTRDv0::DrawModule()
{
//
// Draw a shaded view of the Transition Radiation Detector version 0
//
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("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 0");
pMC->Gdman(18, 4, "MAN");
}
//_____________________________________________________________________________
void AliTRDv0::CreateMaterials()
{
//
// Create materials for the Transition Radiation Detector
//
AliTRD::CreateMaterials();
}
//_____________________________________________________________________________
void AliTRDv0::Init()
{
//
// Initialise Transition Radiation Detector after 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 AliTRDv0::StepManager()
{
//
// Procedure called at every step in the TRD
//
Int_t vol[3];
Int_t icopy, 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);
if ((idSens == fIdSens1) ||
(idSens == fIdSens2) ||
(idSens == fIdSens3)) {
// The sector number
pMC->CurrentVolOff(5,0,icopy);
vol[0] = icopy;
// The chamber number
// 1: outer left
// 2: neighbouring left
// 3: inner
// 4: neighbouring right
// 5: outer right
pMC->CurrentVolOff(3,0,icopy);
if (idSens == fIdSens3)
vol[1] = 4 * icopy - 3;
else if (idSens == fIdSens2)
vol[1] = 2 * icopy;
else
vol[1] = 3;
// The plane number
pMC->CurrentVolOff(1,0,icopy);
vol[2] = icopy;
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);
}
}
}
}