+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/* $Id$ */
+
+// Read background particles from a boundary source
+// Very specialized generator to simulate background from beam halo.
+// The input file is a text file specially prepared
+// for this purpose.
+// Author: andreas.morsch@cern.ch
+
+#include <stdlib.h>
+
+#include <TDatabasePDG.h>
+#include <TPDGCode.h>
+
#include "AliGenHalo.h"
-#include "AliGenMUONlib.h"
-#include "AliMC.h"
#include "AliRun.h"
-#include <TDirectory.h>
-#include <TFile.h>
-#include <TTree.h>
-#include <stdlib.h>
- ClassImp(AliGenHalo)
- AliGenHalo::AliGenHalo()
- :AliGenerator(-1)
+
+ClassImp(AliGenHalo)
+
+AliGenHalo::AliGenHalo()
+ :AliGenerator(-1),
+ fp(0),
+ fFileName(0)
{
+// Constructor
fName="Halo";
fTitle="Halo from LHC Tunnel";
- // Set the default file
- fFileName="~/marsip/marsip5.mu";
//
// Read all particles
fNpart=-1;
- fp=0;
}
AliGenHalo::AliGenHalo(Int_t npart)
- :AliGenerator(npart)
+ :AliGenerator(npart),
+ fp(0),
+ fFileName(0)
{
+// Constructor
fName="Halo";
fTitle="Halo from LHC Tunnel";
- // Set the default file
- fFileName="~/marsip/marsip5.mu";
//
// Read all particles
fNpart=-1;
- fp=0;
}
//____________________________________________________________
AliGenHalo::~AliGenHalo()
{
+// Destructor
}
//____________________________________________________________
void AliGenHalo::Init()
-{}
+{
+// Initialisation
+}
//____________________________________________________________
void AliGenHalo::Generate()
{
- AliMC* pMC = AliMC::GetMC();
- FILE *fp = fopen(fFileName,"r");
+// Generate from input file
+ fp = fopen(fFileName,"r");
if (fp) {
- printf("\n File %s opened for reading ! \n ", fFileName);
+ printf("\n File %s opened for reading ! \n ", (char*) &fFileName);
} else {
- printf("\n Opening of file %s failed ! \n ", fFileName);
+ printf("\n Opening of file %s failed ! \n ", (char*) &fFileName);
}
//
// MARS particle codes
- const Int_t imars[12]={0,14, 13, 8, 9, 11, 12, 5, 6, 1, 3, 2};
+ const Int_t kmars[12]={0,kProton,kNeutron,kPiPlus,kPiMinus,kKPlus,kKMinus,
+ kMuonPlus,kMuonMinus,kGamma,kElectron,kPositron};
Float_t polar[3]= {0,0,0};
Float_t origin[3];
Float_t p[3], p0;
Float_t ekin, wgt, tx, ty, tz, txy;
- Float_t amass, charge, tlife;
- char name[100];
+ Float_t amass;
//
- Int_t ipart, itrtyp, ncols, nt;
+ Int_t ipart, ncols, nt;
Int_t nread=0;
origin[2]=2650;
if (ncols < 0) break;
nread++;
if (fNpart !=-1 && nread > fNpart) break;
- ipart = imars[ipart];
- pMC->Gfpart(ipart, name, itrtyp,
- amass, charge, tlife);
+ ipart = kmars[ipart];
+ amass = TDatabasePDG::Instance()->GetParticle(ipart)->Mass();
p0=sqrt(ekin*ekin + 2.*amass);
txy=TMath::Sqrt(tx*tx+ty*ty);
p[1]=p0*ty;
p[2]=p0*tz;
fParentWeight=wgt;
- gAlice->SetTrack(1,-1,ipart,p,origin,polar,0,"Halo+",nt,fParentWeight);
+ PushTrack(fTrackIt,-1,ipart,p,origin,polar,0,kPNoProcess,nt,fParentWeight);
+// PushTrack(fTrackIt,-1,ipart,p,origin,polar,0,"Halo+",nt,fParentWeight);
origin[2]=-origin[2];
p[2]=-p[2];
- gAlice->SetTrack(1,-1,ipart,p,origin,polar,0,"Halo-",nt,fParentWeight);
+ PushTrack(fTrackIt,-1,ipart,p,origin,polar,0,kPNoProcess,nt,fParentWeight);
+// PushTrack(fTrackIt,-1,ipart,p,origin,polar,0,"Halo-",nt,fParentWeight);
origin[2]=-origin[2];
p[2]=-p[2];
}
-