X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=EVGEN%2FAliGenHalo.cxx;h=8fb4b372aa9cada1233382067c3f82def2d9a6b7;hb=dac6c6759099d1a55c6836f66ae2afda197c5288;hp=d1530450a7635f2369e3c42994ae88452fb66956;hpb=886b6f7342e357a2c0ffa88df944a470082fa498;p=u%2Fmrichter%2FAliRoot.git

diff --git a/EVGEN/AliGenHalo.cxx b/EVGEN/AliGenHalo.cxx
index d1530450a76..8fb4b372aa9 100644
--- a/EVGEN/AliGenHalo.cxx
+++ b/EVGEN/AliGenHalo.cxx
@@ -13,73 +13,75 @@
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
 
-/*
-$Log$
-Revision 1.4  1999/09/29 09:24:14  fca
-Introduction of the Copyright and cvs Log
+/* $Id$ */
 
-*/
+// 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 "AliPDG.h"
 
-#include <TDirectory.h>
-#include <TDatabasePDG.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()
 {
-    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 imars[12]={0,kProton,kNeutron,kPiPlus,kPiMinus,kKPlus,kKMinus,
+  const Int_t kmars[12]={0,kProton,kNeutron,kPiPlus,kPiMinus,kKPlus,kKMinus,
 			 kMuonPlus,kMuonMinus,kGamma,kElectron,kPositron};
  
   Float_t polar[3]= {0,0,0};
@@ -101,7 +103,7 @@ void AliGenHalo::Generate()
       if (ncols < 0) break;
       nread++;
       if (fNpart !=-1 && nread > fNpart) break;
-      ipart = imars[ipart];
+      ipart = kmars[ipart];
       amass = TDatabasePDG::Instance()->GetParticle(ipart)->Mass();
       p0=sqrt(ekin*ekin + 2.*amass);
       
@@ -115,10 +117,12 @@ void AliGenHalo::Generate()
       p[1]=p0*ty;
       p[2]=p0*tz;
       fParentWeight=wgt;
-      gAlice->SetTrack(fTrackIt,-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(fTrackIt,-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];
   }
@@ -131,4 +135,3 @@ void AliGenHalo::Generate()
 
 
 
-