X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TPHIC%2FAliGenTPHIC.cxx;h=8bb0e815558115ef9c41c11f984030ab8e87b978;hb=550c8e217c8eb8c4915c2af44cff87a73eacd3cc;hp=5264b2b4b81b714768478e68c73dff54e908447d;hpb=93a2041b6acdbf31d3a3eb48708a2a54a759543d;p=u%2Fmrichter%2FAliRoot.git

diff --git a/TPHIC/AliGenTPHIC.cxx b/TPHIC/AliGenTPHIC.cxx
index 5264b2b4b81..8bb0e815558 100644
--- a/TPHIC/AliGenTPHIC.cxx
+++ b/TPHIC/AliGenTPHIC.cxx
@@ -56,6 +56,8 @@
 #include <TParticle.h>
 #include <TParticlePDG.h>
 #include <TDatabasePDG.h>
+#include <TClonesArray.h>
+
 #include "AliPythia.h"
 #include "AliRun.h"
 #include <AliGenTPHIC.h>
@@ -66,7 +68,15 @@ ClassImp(AliGenTPHIC)
 
 //------------------------------------------------------------
 
-AliGenTPHIC::AliGenTPHIC()
+AliGenTPHIC::AliGenTPHIC() :
+  AliGenMC(),
+  fTPHICgen(0x0),
+  fPythia(0x0),
+  fParticles(0x0),
+  fEvent(-1),
+  fDebug(0),
+  fDebugEventFirst(-1),
+  fDebugEventLast(-1)
 {
   // Constructor: create generator instance,
   // create particle array
@@ -74,6 +84,7 @@ AliGenTPHIC::AliGenTPHIC()
   // eta_b production in Ca-Ca collisions at 7 A*TeV
 
   SetMC(new TPHICgen());
+  fTPHICgen = (TPHICgen*) fMCEvGen;
   fPythia = AliPythia::Instance();
   fParticles = new TClonesArray("TParticle",100);
 
@@ -120,8 +131,10 @@ void AliGenTPHIC::Generate()
   // The event differectial cross section is assigned as a weight
   // to each track of the event.
 
-  Float_t polar[3]= {0,0,0};
-  Float_t origin0[3],origin[3];
+  Float_t polar[3]   = {0,0,0};
+  Float_t origin0[3] = {0,0,0};
+  Float_t time0 = 0.;
+  Float_t origin[3]  = {0,0,0};
   Float_t p[3], tof;
   Double_t weight;
 
@@ -139,13 +152,18 @@ void AliGenTPHIC::Generate()
     Info("Generate()","one event is produced");
 
   Int_t j;
-  for (j=0;j<3;j++) origin[j]=fOrigin[j];
+  for (j=0;j<3;j++) origin0[j]=fOrigin[j];
+  time0 = fTimeOrigin;
   if(fVertexSmear==kPerEvent) {
     Rndm(random,6);
     for (j=0;j<3;j++) {
       origin0[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
 	TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
     }
+    Rndm(random,2);
+    time0 += fOsigma[2]/TMath::Ccgs()*
+      TMath::Cos(2*random[0]*TMath::Pi())*
+      TMath::Sqrt(-2*TMath::Log(random[1]));
   }
 
   Int_t ip;
@@ -165,7 +183,7 @@ void AliGenTPHIC::Generate()
     origin[2] = origin0[2]+iparticle->Vz()/10.;
     kf = CheckPDGCode(iparticle->GetPdgCode());
     iparent = -1;
-    tof     = kconv*iparticle->T();
+    tof     = time0 + kconv*iparticle->T();
     if (ks == 1) trackIt = 1;
     else         trackIt = 0;
     PushTrack(fTrackIt*trackIt,iparent,kf,p,origin,polar,tof,kPPrimary,nt,weight,ks);
@@ -351,20 +369,20 @@ void AliGenTPHIC::SetProcess       (Int_t   proc  )
 {
   // Get 4-momentum of the first recoil nucleus after
   // the 2-photon process.
-  return TLorentzVector(fTPHICgen->GetPTAG1(1),
+  return TLorentzVector(fTPHICgen->GetPTAG1(0),
+			fTPHICgen->GetPTAG1(1),
 			fTPHICgen->GetPTAG1(2),
-			fTPHICgen->GetPTAG1(3),
-			fTPHICgen->GetPTAG1(4));
+			fTPHICgen->GetPTAG1(3));
 }
 //____________________________________________________________
   TLorentzVector AliGenTPHIC::MomentumRecNucl2()
 {
   // Get 4-momentum of the first recoil nucleus after
   // the 2-photon process.
-  return TLorentzVector(fTPHICgen->GetPTAG2(1),
+  return TLorentzVector(fTPHICgen->GetPTAG2(0),
+			fTPHICgen->GetPTAG2(1),
 			fTPHICgen->GetPTAG2(2),
-			fTPHICgen->GetPTAG2(3),
-			fTPHICgen->GetPTAG2(4));
+			fTPHICgen->GetPTAG2(3));
 }
 //____________________________________________________________
   Float_t AliGenTPHIC::GetXSectionCurrent()