X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TEPEMGEN%2FAliGenEpEmv1.cxx;h=78f24143ac4450a55d37aa4d66c28ff36c5123a4;hb=efd1de451a3da7eabab6e83ff7b5fa4812ddf1f5;hp=450e3d2d96ca5c9291fff89ecab23fd876ffb2f3;hpb=93a2041b6acdbf31d3a3eb48708a2a54a759543d;p=u%2Fmrichter%2FAliRoot.git

diff --git a/TEPEMGEN/AliGenEpEmv1.cxx b/TEPEMGEN/AliGenEpEmv1.cxx
index 450e3d2d96c..78f24143ac4 100644
--- a/TEPEMGEN/AliGenEpEmv1.cxx
+++ b/TEPEMGEN/AliGenEpEmv1.cxx
@@ -79,7 +79,12 @@ ClassImp(AliGenEpEmv1)
 
 //------------------------------------------------------------
 
-AliGenEpEmv1::AliGenEpEmv1()
+AliGenEpEmv1::AliGenEpEmv1():
+  fMass(0),
+  fEpEmGen(0),
+  fDebug(0),
+  fEvent(0),
+  fHeader(AliGenEventHeader())
 {
   // Default constructor
   // Avoid zero pt
@@ -127,6 +132,7 @@ void AliGenEpEmv1::Generate()
 
   Float_t polar[3]= {0,0,0};
   Float_t origin[3];
+  Float_t time = 0.;
   Float_t p[3];
 
   Double_t ptElectron,ptPositron, phiElectron,phiPositron, mt;
@@ -141,12 +147,17 @@ void AliGenEpEmv1::Generate()
 	   yElectron,yPositron,xElectron,xPositron,phi12);
 
   for (j=0;j<3;j++) origin[j]=fOrigin[j];
+  time = fTimeOrigin;
   if(fVertexSmear==kPerEvent) {
     Rndm(random,6);
     for (j=0;j<3;j++) {
       origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
 	TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
     }
+    Rndm(random,2);
+    time += fOsigma[2]/TMath::Ccgs()*
+      TMath::Cos(2*random[0]*TMath::Pi())*
+      TMath::Sqrt(-2*TMath::Log(random[1]));
   }
 
   Rndm(random,1);
@@ -163,7 +174,7 @@ void AliGenEpEmv1::Generate()
   id =  11;
   if (fDebug == 2)
     printf("id=%+3d, p = (%+11.4e,%+11.4e,%+11.4e) GeV\n",id,p[0],p[1],p[2]);
-  PushTrack(fTrackIt,-1, id,p,origin,polar,0,kPPrimary,nt,weight);
+  PushTrack(fTrackIt,-1, id,p,origin,polar,time,kPPrimary,nt,weight);
 
   // Produce positron
   mt = TMath::Sqrt(ptPositron*ptPositron + fMass*fMass);
@@ -173,12 +184,15 @@ void AliGenEpEmv1::Generate()
   id = -11;
   if (fDebug == 2)
     printf("id=%+3d, p = (%+11.4e,%+11.4e,%+11.4e) GeV\n",id,p[0],p[1],p[2]);
-  PushTrack(fTrackIt,-1, id,p,origin,polar,0,kPPrimary,nt,weight);
+  PushTrack(fTrackIt,-1, id,p,origin,polar,time,kPPrimary,nt,weight);
   
   fEvent++;
   if (fEvent%1000 == 0) {
     printf("=====> AliGenEpEmv1::Generate(): \n   Event %d, sigma=%f +- %f kb\n",
   	   fEvent,fEpEmGen->GetXsection(),fEpEmGen->GetDsection());
   }
+  fHeader.SetEventWeight(weight);
+  fHeader.SetInteractionTime(time);
+  AddHeader(&fHeader);
 }