* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.30 2001/05/21 16:45:47 hristov
-Last minute changes (C.Blume)
-
-Revision 1.29 2001/05/16 14:57:28 alibrary
-New files for folders and Stack
-
-Revision 1.28 2001/05/07 08:03:22 cblume
-Generate also hits in the amplification region
-
-Revision 1.27 2001/03/30 14:40:15 cblume
-Update of the digitization parameter
-
-Revision 1.26 2000/11/30 17:38:08 cblume
-Changes to get in line with new STEER and EVGEN
-
-Revision 1.25 2000/11/15 14:30:16 cblume
-Fixed bug in calculating detector no. of extra hit
-
-Revision 1.24 2000/11/10 14:58:36 cblume
-Introduce additional hit with amplitude 0 at the chamber borders
-
-Revision 1.23 2000/11/01 14:53:21 cblume
-Merge with TRD-develop
-
-Revision 1.17.2.5 2000/10/15 23:40:01 cblume
-Remove AliTRDconst
-
-Revision 1.17.2.4 2000/10/06 16:49:46 cblume
-Made Getters const
-
-Revision 1.17.2.3 2000/10/04 16:34:58 cblume
-Replace include files by forward declarations
-
-Revision 1.17.2.2 2000/09/18 13:50:17 cblume
-Include TR photon generation and adapt to new AliTRDhit
-
-Revision 1.22 2000/06/27 13:08:50 cblume
-Changed to Copy(TObject &A) to appease the HP-compiler
-
-Revision 1.21 2000/06/09 11:10:07 cblume
-Compiler warnings and coding conventions, next round
-
-Revision 1.20 2000/06/08 18:32:58 cblume
-Make code compliant to coding conventions
-
-Revision 1.19 2000/06/07 16:27:32 cblume
-Try to remove compiler warnings on Sun and HP
-
-Revision 1.18 2000/05/08 16:17:27 cblume
-Merge TRD-develop
-
-Revision 1.17.2.1 2000/05/08 14:59:16 cblume
-Made inline function non-virtual. Bug fix in setting sensitive chamber
-
-Revision 1.17 2000/02/28 19:10:26 cblume
-Include the new TRD classes
-
-Revision 1.16.4.1 2000/02/28 18:04:35 cblume
-Change to new hit version, introduce geometry class, and move digitization and clustering to AliTRDdigitizer/AliTRDclusterizerV1
-
-Revision 1.16 1999/11/05 22:50:28 fca
-Do not use Atan, removed from ROOT too
-
-Revision 1.15 1999/11/02 17:20:19 fca
-initialise nbytes before using it
-
-Revision 1.14 1999/11/02 17:15:54 fca
-Correct ansi scoping not accepted by HP compilers
-
-Revision 1.13 1999/11/02 17:14:51 fca
-Correct ansi scoping not accepted by HP compilers
-
-Revision 1.12 1999/11/02 16:35:56 fca
-New version of TRD introduced
-
-Revision 1.11 1999/11/01 20:41:51 fca
-Added protections against using the wrong version of FRAME
-
-Revision 1.10 1999/09/29 09:24:35 fca
-Introduction of the Copyright and cvs Log
-
-*/
+/* $Id$ */
///////////////////////////////////////////////////////////////////////////////
// //
#include <stdlib.h>
-#include <TMath.h>
-#include <TVector.h>
-#include <TRandom.h>
#include <TF1.h>
#include <TLorentzVector.h>
+#include <TMath.h>
+#include <TRandom.h>
+#include <TVector.h>
+#include <TVirtualMC.h>
-#include "AliRun.h"
-#include "AliMC.h"
#include "AliConst.h"
-
-#include "AliTRDv1.h"
+#include "AliRun.h"
+#include "AliTRDgeometry.h"
#include "AliTRDhit.h"
#include "AliTRDmatrix.h"
-#include "AliTRDgeometry.h"
#include "AliTRDsim.h"
+#include "AliTRDv1.h"
ClassImp(AliTRDv1)
// Take the absorbtion in the entrance window into account
Double_t muMy = fTR->GetMuMy(energyMeV);
sigma = muMy * fFoilDensity;
- absLength = gRandom->Exp(sigma);
- if (absLength < AliTRDgeometry::MyThick()) continue;
+ if (sigma > 0.0) {
+ absLength = gRandom->Exp(1.0/sigma);
+ if (absLength < AliTRDgeometry::MyThick()) continue;
+ }
+ else {
+ continue;
+ }
// The absorbtion cross sections in the drift gas
if (fGasMix == 1) {
// Gas-mixture (Xe/CO2)
Double_t muXe = fTR->GetMuXe(energyMeV);
Double_t muCO = fTR->GetMuCO(energyMeV);
- sigma = (0.85 * muXe + 0.15 * muCO) * fGasDensity;
+ sigma = (0.85 * muXe + 0.15 * muCO) * fGasDensity * fTR->GetTemp();
}
else {
// Gas-mixture (Xe/Isobutane)
Double_t muXe = fTR->GetMuXe(energyMeV);
Double_t muBu = fTR->GetMuBu(energyMeV);
- sigma = (0.97 * muXe + 0.03 * muBu) * fGasDensity;
+ sigma = (0.97 * muXe + 0.03 * muBu) * fGasDensity * fTR->GetTemp();
}
// The distance after which the energy of the TR photon
// is deposited.
- absLength = gRandom->Exp(sigma);
- if (absLength > AliTRDgeometry::DrThick()) continue;
+ if (sigma > 0.0) {
+ absLength = gRandom->Exp(1.0/sigma);
+ if (absLength > AliTRDgeometry::DrThick()) continue;
+ }
+ else {
+ continue;
+ }
// The position of the absorbtion
Float_t posHit[3];
Int_t qTot;
Float_t hits[3];
- Float_t moms[3];
- Float_t random[1];
+ Double_t random[1];
Float_t charge;
Float_t aMass;
TString cIdCurrent;
TString cIdSensDr = "J";
TString cIdSensAm = "K";
- Char_t cIdChamber[2];
+ Char_t cIdChamber[3];
+ cIdChamber[2] = 0;
TLorentzVector pos, mom;
const Int_t kNplan = AliTRDgeometry::Nplan();
+ const Int_t kNcham = AliTRDgeometry::Ncham();
+ const Int_t kNdetsec = kNplan * kNcham;
+
const Double_t kBig = 1.0E+12;
// Ionization energy
drRegion = kFALSE;
amRegion = kFALSE;
cIdCurrent = gMC->CurrentVolName();
- if (cIdCurrent[1] == cIdSensDr) {
+ if (cIdSensDr == cIdCurrent[1]) {
drRegion = kTRUE;
}
- if (cIdCurrent[1] == cIdSensAm) {
+ if (cIdSensAm == cIdCurrent[1]) {
amRegion = kTRUE;
}
if (drRegion || amRegion) {
// The plane and chamber number
cIdChamber[0] = cIdCurrent[2];
cIdChamber[1] = cIdCurrent[3];
- Int_t idChamber = atoi(cIdChamber);
+ Int_t idChamber = (atoi(cIdChamber) % kNdetsec);
cha = ((Int_t) idChamber / kNplan);
pla = ((Int_t) idChamber % kNplan);
// Special hits and TR photons only in the drift region
if (drRegion) {
- // Create some special hits with amplitude 0 at the entrance and
- // exit of each chamber that contain the momentum components of the particle
+ // Create a track reference at the entrance and
+ // exit of each chamber that contain the
+ // momentum components of the particle
if (gMC->IsTrackEntering() || gMC->IsTrackExiting()) {
gMC->TrackMomentum(mom);
- moms[0] = mom[0];
- moms[1] = mom[1];
- moms[2] = mom[2];
- AddHit(gAlice->CurrentTrack(),det,moms,0,kTRUE);
- AddHit(gAlice->CurrentTrack(),det,hits,0,kTRUE);
+ AddTrackReference(gAlice->CurrentTrack());
}
// Create the hits from TR photons
if (pp > 0) {
do
- gMC->Rndm(random,1);
+ gMC->GetRandom()->RndmArray(1, random);
while ((random[0] == 1.) || (random[0] == 0.));
stepSize = - TMath::Log(random[0]) / pp;
gMC->SetMaxStep(stepSize);
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff