Add offset to mitigate edge effects min bias to trigger event ratio (#…

…1712)
AliceO2Group · Jul 23, 2024 · d3d9c7f · d3d9c7f
1 parent d13558d
commit d3d9c7f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/MC/config/PWGEM/external/generator/Generator_pythia8_GapTriggered_HFLepton.C b/MC/config/PWGEM/external/generator/Generator_pythia8_GapTriggered_HFLepton.C
@@ -30,6 +30,9 @@ public:
 
     auto seed = (gRandom->TRandom::GetSeed() % 900000000);
 
+    int offset = (int)(gRandom->Uniform(lInverseTriggerRatio)); // create offset to mitigate edge effects due to small number of events per job
+    lGeneratedEvents += offset;
+
     cout << "Initalizing extra PYTHIA object used to generate min-bias events..." << endl;
     TString pathconfigMB = gSystem->ExpandPathName("$O2DPG_ROOT/MC/config/PWGEM/pythia8/generator/pythia8_MB_gapevent.cfg");
     pythiaObjectMinimumBias.readFile(pathconfigMB.Data());