+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/* $Id$ */
+
///////////////////////////////////////////////////////////////////////////////
// //
-// Transition Radiation Detector version 0 -- coarse simulation //
+// Transition Radiation Detector version 0 -- fast simulator //
// //
//Begin_Html
/*
-<img src="gif/AliTRDv0Class.gif">
+<img src="picts/AliTRDfullClass.gif">
*/
//End_Html
// //
// //
///////////////////////////////////////////////////////////////////////////////
+#include <stdlib.h>
+
+#include <TLorentzVector.h>
#include <TMath.h>
#include <TRandom.h>
-#include <TVector.h>
-#include <TGeometry.h>
-#include <TNode.h>
-#include <TBRIK.h>
-#include <TPGON.h>
+#include <TVector.h>
+#include <TVirtualMC.h>
-#include "GParticle.h"
-#include "AliTRDv0.h"
+#include "AliConst.h"
#include "AliRun.h"
+#include "AliTRDgeometry.h"
+#include "AliTRDhit.h"
+#include "AliTRDv0.h"
#include "AliMC.h"
-#include "AliConst.h"
-
+
ClassImp(AliTRDv0)
+
+//_____________________________________________________________________________
+AliTRDv0::AliTRDv0():AliTRD()
+{
+ //
+ // AliTRDv0 default constructor
+ //
+
+ fHitsOn = 0;
+
+}
//_____________________________________________________________________________
AliTRDv0::AliTRDv0(const char *name, const char *title)
//
// Standard constructor for Transition Radiation Detector version 0
//
- fIdSens1 = fIdSens2 = 0;
+
+ fHitsOn = 0;
+
}
-
+
//_____________________________________________________________________________
-void AliTRDv0::CreateGeometry()
+AliTRDv0::~AliTRDv0()
{
//
- // 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 : Nick van Eijndhoven (CERN) 24/09/90
+ // AliTRDv0 destructor
//
- //Begin_Html
- /*
- <img src="gif/AliTRDv0.gif">
- */
- //End_Html
- //Begin_Html
- /*
- <img src="gif/AliTRDv0Tree.gif">
- */
- //End_Html
-
- Float_t xpos, ypos, zpos, f;
- Int_t idmat[2];
- Float_t widma, theoc, widmi;
- Float_t tanzr;
- Float_t par_ic[4], par_oc[11], par_mo[10], par_fr[4];
-
- Int_t *idtmed = gAlice->Idtmed();
-
- // --- Name Conventions :
- // TRD --> Mother TRD volume (Al)
- // UTRS --> Sectors of the sub-detector (Al)
- // UTFI(O) --> Inner part of the detector frame (Air)
- // UTCI(O) --> Frames of the inner and outer chambers (C)
- // UTII(O) --> Inner part of the chambers (Air)
- // UTMI(O) --> Modules in the chambers (Air)
- // UT1I(O) --> Radiator layer (CO2)
- // UT2I(O) --> Polyethylene layer (PE)
- // UT3I(O) --> Mylar layer (Mylar)
- // UT4I(O) --> Xe/C02 layer (Xe/C02)
- // UT5I(O) --> Cu layer (pads/sensitive) (Cu)
- // UT6I(O) --> Kapton layer (Kapton)
- // UT7I(O) --> NOMEX layer (C)
- // UT8I(O) --> Readout layer (Al)
-
- // --- Contains geometry information
-
- // --- Number of sectors in the full detector
- // --- Number of modules in each sector
- // --- z-Coordinates of the TRD-frame
- // --- r-Coordinates of the TRD-frame
- // --- Thickness of the aluminium of the support frame
- // --- Thickness of the interior of the support frame
- // --- Thickness of the carbon chamber frame
- // --- Thickness and z-position of the PE-layer in the radiator
- // --- Thickness and z-position of the radiator
- // --- Thickness and z-position of the mylar-layer
- // --- Thickness and z-position of the Xe/C02-layer
- // --- Thickness and z-position of the Cu-layer (Pads)
- // --- Thickness and z-position of the kapton-layer
- // --- Thickness and z-position of the NOMEX-layer
- // Simple C-layer for the time being
- // --- Thickness and z-position of the readout-layer
- // --- Parameter for the arrays
-
- AliMC* pMC = AliMC::GetMC();
-
- //************************************************************************
-
- // Definition of Volumes
-
- //************************************************************************
-
- //phisec = 360./nsect; //The phi-angle of the sectors
- widmi = rmin*TMath::Sin(kPI/nsect);
- widma = rmax*TMath::Sin(kPI/nsect);
- // --- 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[1300], par_mo, 10);
- pMC->Gsdvn("UTRS", "TRD ", 18, 2);
- // --- Definition of the inner part of the detector frame (Air)
- par_fr[0] = widmi;
- par_fr[1] = widma;
- par_fr[2] = zmax1/4 - alfram2/2;
- par_fr[3] = (rmax-rmin)/2;
- pMC->Gsvolu("UTFI", "TRD1", idtmed[1301], par_fr, 4);
- pMC->Gsvolu("UTFO", "TRD1", idtmed[1301], par_fr, 4);
- // --- Calculate the shape-parameter for the outer chambers
- tanzr = (zmax1-zmax2)/(rmax-rmin);
- theoc = -kRaddeg*TMath::ATan(tanzr/2);
- // --- The carbon frame of the outer chambers
- par_oc[0] = (rmax-rmin)/2;
- par_oc[1] = theoc;
- par_oc[2] = 90.;
- par_oc[3] = zmax2/2 -zmax1/4 -alfram2/2;
- par_oc[4] = widmi - (inframe+alfram1)/2;
- par_oc[5] = widmi - (inframe+alfram1)/2;
- par_oc[6] = 0.;
- par_oc[7] = zmax1/4 -alfram2/2;
- par_oc[8] = widma - (inframe+alfram1)/2;
- par_oc[9] = widma - (inframe+alfram1)/2;
- par_oc[10] = 0.;
- pMC->Gsvolu("UTCO", "TRAP", idtmed[1306], par_oc, 11);
- // --- The inner part of the outer chambers (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[1301], par_oc, 11);
- // --- Definition of the six modules within each outer chamber
- pMC->Gsdvn("UTMO", "UTIO", nmodul, 3);
- // --- Definition of the layers of each outer 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.;
- // --- Radiator layer
- par_oc[0] = rathick/2;
- pMC->Gsvolu("UT1O", "TRAP", idtmed[1311], par_oc, 11);
- // --- Polyethylene layer
- par_oc[0] = pethick/2;
- pMC->Gsvolu("UT2O", "TRAP", idtmed[1302], par_oc, 11);
- // --- Mylar layer
- par_oc[0] = mythick/2;
- pMC->Gsvolu("UT3O", "TRAP", idtmed[1307], par_oc, 11);
- // --- Xe/CO2 layer
- par_oc[0] = xethick/2;
- pMC->Gsvolu("UT4O", "TRAP", idtmed[1308], par_oc, 11);
- // --- Cu layer
- par_oc[0] = cuthick/2;
- pMC->Gsvolu("UT5O", "TRAP", idtmed[1304], par_oc, 11);
- // --- Kapton layer
- par_oc[0] = kathick/2;
- pMC->Gsvolu("UT6O", "TRAP", idtmed[1310], par_oc, 11);
- // --- NOMEX layer
- par_oc[0] = nothick/2;
- pMC->Gsvolu("UT7O", "TRAP", idtmed[1309], par_oc, 11);
- // --- Read out layer
- par_oc[0] = rothick/2;
- pMC->Gsvolu("UT8O", "TRAP", idtmed[1305], par_oc, 11);
- // --- The carbon frame of the inner chambers
- par_ic[0] = widmi - (inframe+alfram1)/2;
- par_ic[1] = widma - (inframe+alfram1)/2;
- par_ic[2] = zmax1/4 - alfram2/2;
- par_ic[3] = (rmax-rmin)/2;
- pMC->Gsvolu("UTCI", "TRD1", idtmed[1306], par_ic, 4);
- // --- The inner part of the inner chambers (Air)
- par_ic[0] -= ccframe;
- par_ic[1] -= ccframe;
- par_ic[2] -= ccframe;
- pMC->Gsvolu("UTII", "TRD1", idtmed[1301], par_ic, 4);
- // --- 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.;
- // --- Radiator layer
- par_ic[3] = rathick/2;
- pMC->Gsvolu("UT1I", "TRD1", idtmed[1311], par_ic, 4);
- // --- Polyethylene layer
- par_ic[3] = pethick/2;
- pMC->Gsvolu("UT2I", "TRD1", idtmed[1302], par_ic, 4);
- // --- Mylar layer
- par_ic[3] = mythick/2;
- pMC->Gsvolu("UT3I", "TRD1", idtmed[1307], par_ic, 4);
- // --- Xe/CO2 layer
- par_ic[3] = xethick/2;
- pMC->Gsvolu("UT4I", "TRD1", idtmed[1308], par_ic, 4);
- // --- Cu layer
- par_ic[3] = cuthick/2;
- pMC->Gsvolu("UT5I", "TRD1", idtmed[1304], par_ic, 4);
- // --- Kapton layer
- par_ic[3] = kathick/2;
- pMC->Gsvolu("UT6I", "TRD1", idtmed[1310], par_ic, 4);
- // --- NOMEX layer
- par_ic[3] = nothick/2;
- pMC->Gsvolu("UT7I", "TRD1", idtmed[1309], par_ic, 4);
- // --- Read out layer
- par_ic[3] = rothick/2;
- pMC->Gsvolu("UT8I", "TRD1", idtmed[1305], par_ic, 4);
- //************************************************************************
-
- // Positioning of Volumes
-
- //************************************************************************
- // --- The rotation matrices
- AliMatrix(idmat[0], 90., 90., 180., 0., 90., 0.);
- AliMatrix(idmat[1], 90., 90., 0., 0., 90., 0.);
- // --- Position of the layers in a TRD module
- f = TMath::Tan(theoc * kDegrad);
- pMC->Gspos("UT8O", 1, "UTMO", 0., f*rozpos, rozpos, 0, "ONLY");
- pMC->Gspos("UT7O", 1, "UTMO", 0., f*nozpos, nozpos, 0, "ONLY");
- pMC->Gspos("UT6O", 1, "UTMO", 0., f*kazpos, kazpos, 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("UT2O", 1, "UT1O", 0., f*pezpos, pezpos, 0, "ONLY");
- pMC->Gspos("UT8I", 1, "UTMI", 0., 0., rozpos, 0, "ONLY");
- pMC->Gspos("UT7I", 1, "UTMI", 0., 0., nozpos, 0, "ONLY");
- pMC->Gspos("UT6I", 1, "UTMI", 0., 0., kazpos, 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("UT2I", 1, "UT1I", 0., 0., pezpos, 0, "ONLY");
- // --- Position of the inner part of the chambers
- pMC->Gspos("UTII", 1, "UTCI", 0., 0., 0., 0, "ONLY");
- pMC->Gspos("UTIO", 1, "UTCO", 0., 0., 0., 0, "ONLY");
- // --- Position of the chambers in the support frame
- xpos = 0.;
- ypos = (zmax1-zmax2)/4;
- zpos = 0.;
- pMC->Gspos("UTCO", 1, "UTFO", xpos, ypos, zpos, 0, "ONLY");
- xpos = 0.;
- ypos = 0.;
- zpos = 0.;
- pMC->Gspos("UTCI", 1, "UTFI", xpos, ypos, zpos, 0, "ONLY");
- // --- Position of the frame in the sectors of the mother volume
- xpos = (rmax+rmin)/2;
- ypos = 0.;
- zpos = zmax1*3/4;
- pMC->Gspos("UTFO", 1, "UTRS", xpos, ypos, zpos, idmat[0], "ONLY");
- pMC->Gspos("UTFO", 2, "UTRS", xpos, ypos,-zpos, idmat[1], "ONLY");
- xpos = (rmax+rmin)/2;
- ypos = 0.;
- zpos = zmax1/4;
- pMC->Gspos("UTFI", 1, "UTRS", xpos, ypos, zpos, idmat[0], "ONLY");
- pMC->Gspos("UTFI", 2, "UTRS", xpos, ypos,-zpos, idmat[1], "ONLY");
- // --- Position of TRD mother volume in ALICE experiment
- pMC->Gspos("TRD ", 1, "ALIC", 0., 0., 0., 0, "ONLY");
+
}
//_____________________________________________________________________________
-void AliTRDv0::DrawDetector()
+void AliTRDv0::CreateGeometry()
{
//
- // Draw a shaded view of the Transition Radiation Detector version 0
+ // Create the GEANT geometry for the Transition Radiation Detector - Version 0
+ // This version covers the full azimuth.
//
- 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("UTFI","SEEN",0);
- pMC->Gsatt("UTFO","SEEN",0);
- pMC->Gsatt("UTCO","SEEN",0);
- pMC->Gsatt("UTIO","SEEN",0);
- pMC->Gsatt("UTMO","SEEN",0);
- pMC->Gsatt("UT1O","SEEN",1);
- pMC->Gsatt("UT4O","SEEN",1);
- pMC->Gsatt("UTCI","SEEN",0);
- pMC->Gsatt("UTII","SEEN",0);
- pMC->Gsatt("UTMI","SEEN",0);
- 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");
+ // Check that FRAME is there otherwise we have no place where to put the TRD
+ AliModule* frame = gAlice->GetModule("FRAME");
+ if (!frame) return;
+
+ // Define the chambers
+ AliTRD::CreateGeometry();
+
}
//_____________________________________________________________________________
//
// Create materials for the Transition Radiation Detector
//
- printf("TRD: Fast simulation with coarse geometry\n");
+
AliTRD::CreateMaterials();
+
}
//_____________________________________________________________________________
void AliTRDv0::Init()
{
//
- // Initialise Transition Radiation Detector after geometry is built
+ // Initialize Transition Radiation Detector after geometry is built
//
+
AliTRD::Init();
- AliMC* pMC = AliMC::GetMC();
- //
- // Retrieve the numeric identifier of the sensitive planes
- fIdSens1 = pMC->VolId("UT5I");
- fIdSens2 = pMC->VolId("UT5O");
+
+ printf(" Fast simulator\n\n");
+ for (Int_t i = 0; i < 80; i++) printf("*");
+ printf("\n");
+
}
//_____________________________________________________________________________
{
//
// Procedure called at every step in the TRD
+ // Fast simulator. If switched on, a hit is produced when a track
+ // crosses the border between amplification region and pad plane.
//
- Int_t vol[3];
- Int_t icopy, idSens, icSens;
+ Int_t pla = 0;
+ Int_t cha = 0;
+ Int_t sec = 0;
- Float_t hits[4];
+ Float_t hits[3];
+ Int_t det;
- TClonesArray &lhits = *fHits;
+ TLorentzVector p;
- AliMC* pMC = AliMC::GetMC();
+ // Use pad plane as sensitive volume
+ TString cIdSens = "L";
+ TString cIdCurrent;
+ Char_t cIdChamber[3];
+ cIdChamber[2] = 0;
+
+ const Int_t kNplan = AliTRDgeometry::Nplan();
+
+ // Writing out hits enabled?
+ if (!(fHitsOn)) return;
// Use only charged tracks and count them only once per volume
- if(pMC->TrackCharge() && pMC->TrackEntering()) {
+ if (gMC->TrackCharge() &&
+ gMC->IsTrackEntering()) {
// Check on sensitive volume
- idSens = pMC->CurrentVol(0,icSens);
- if ((idSens == fIdSens1) || (idSens == fIdSens2)) {
-
- // The sector number
- pMC->CurrentVolOff(5,0,icopy);
- vol[0] = icopy;
-
- // The chamber number
- pMC->CurrentVolOff(4,0,icopy);
- if (idSens == fIdSens2)
- vol[1] = (icopy - 1) * 3 + 1;
+ cIdCurrent = gMC->CurrentVolName();
+ if (cIdSens == cIdCurrent[1]) {
+
+ gMC->TrackPosition(p);
+ for (Int_t i = 0; i < 3; i++) hits[i] = p[i];
+
+ // The sector number (0 - 17)
+ // The numbering goes clockwise and starts at y = 0
+ Float_t phi = kRaddeg*TMath::ATan2(hits[0],hits[1]);
+ if (phi < 90.)
+ phi = phi + 270.;
else
- vol[1] = icopy + 1;
-
- // The plane number
- pMC->CurrentVolOff(1,0,icopy);
- vol[2] = icopy;
-
- pMC->TrackPosition(hits);
- hits[3] = 0;
-
- new(lhits[fNhits++]) AliTRDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
+ phi = phi - 90.;
+ sec = ((Int_t) (phi / 20));
+
+ // The plane and chamber number
+ cIdChamber[0] = cIdCurrent[2];
+ cIdChamber[1] = cIdCurrent[3];
+ Int_t idChamber = atoi(cIdChamber);
+ cha = ((Int_t) idChamber / kNplan);
+ pla = ((Int_t) idChamber % kNplan);
+ det = fGeometry->GetDetector(pla,cha,sec);
+
+ AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),det,hits,0,kTRUE);
+
}
+
}
+
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff