outdated/mpiTools/macros/gconfig/g4Config.C

Go to the documentation of this file.

// Configuration macro for Geant4 VirtualMC
void Config()
{

   TG4RunConfiguration* runConfiguration 
           = new TG4RunConfiguration("geomRoot", "QGSP_BERT_EMV", "stepLimiter+specialCuts+specialControls");

   TGeant4* geant4 = new TGeant4("TGeant4", "The Geant4 Monte Carlo", runConfiguration);
   cout << "Geant4 has been created." << endl;

   PndStack *stack = new PndStack(1000); 
   stack->StoreSecondaries(kFALSE);
   stack->SetMinPoints(0);
   geant4->SetStack(stack);

   if(FairRunSim::Instance()->IsExtDecayer()){
      TVirtualMCDecayer* decayer = TPythia6Decayer::Instance();
      geant4->SetExternalDecayer(decayer);
   }
  

   TString configm(gSystem->Getenv("CONFIG_DIR"));
   configm1 = configm + "/g4config.in";
   cout << " -I g4Config() using g4conf  macro: " << configm1 << endl;

   // set the common cuts 
   TString cuts = configm + "/SetCuts.C";
   cout << "Physics cuts with script \n "<<  cuts.Data() << endl;
   Int_t cut=gROOT->LoadMacro(cuts.Data());
   if(cut==0)gInterpreter->ProcessLine("SetCuts()"); 

   //set geant4 specific stuff
  geant4->SetMaxNStep(10000);  // default is 30000
  geant4->ProcessGeantMacro(configm1.Data());

}