Hadr02.cc

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//
// $Id: Hadr02.cc 109063 2018-03-23 12:56:28Z gcosmo $
//
// -------------------------------------------------------------
//      GEANT4 Hadr02
//
//  Application demonstrating Geant4 hadronic cross sections
//
//  Author: V.Ivanchenko 20 June 2008
//
//  Modified: 
//
// -------------------------------------------------------------
//
//
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#include "G4RunManager.hh"
#include "G4UImanager.hh"
#include "Randomize.hh"

#include "DetectorConstruction.hh"
#include "G4PhysListFactory.hh"
#include "G4VModularPhysicsList.hh"
#include "PrimaryGeneratorAction.hh"

#include "RunAction.hh"
#include "EventAction.hh"
#include "StackingAction.hh"
#include "HistoManager.hh"

#include "G4UIExecutive.hh"
#include "G4VisExecutive.hh"

#include "UrQMD.hh"

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int main(int argc,char** argv) {

  //detect interactive mode (if no arguments) and define UI session
  G4UIExecutive* ui = nullptr;
  if (argc == 1) ui = new G4UIExecutive(argc,argv);

  //choose the Random engine
  CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine());

  //Construct the default run manager
  G4RunManager * runManager = new G4RunManager();

  //set mandatory initialization classes
  runManager->SetUserInitialization(new DetectorConstruction());

  G4PhysListFactory factory;
  G4VModularPhysicsList* phys = 0;

  // default Physics List for this example
  G4String physName = "QBBC";

  // Physics List name defined via 2nd argument
  if (argc==3) { physName = argv[2]; }
  else {
    char* path = getenv("PHYSLIST");
    if (path) { physName = G4String(path); }
  }
  if ( physName == "UrQMD" ) { phys = new UrQMD; }
  else { phys = factory.GetReferencePhysList(physName); }

  // Physics List is defined via environment variable PHYSLIST
  if(!phys) {
    G4cout << "Hadr02 FATAL ERROR: Physics List is not defined"
           << G4endl;
    return 1;
  }
  runManager->SetUserInitialization(phys);
  HistoManager::GetPointer()->SetPhysicsList(phys);

  runManager->SetUserAction(new PrimaryGeneratorAction());

  //set user action classes
  runManager->SetUserAction(new RunAction());
  runManager->SetUserAction(new EventAction());
  runManager->SetUserAction(new StackingAction());

  //initialize visualization
  G4VisManager* visManager = new G4VisExecutive;
  visManager->Initialize();

  //get the pointer to the User Interface manager
  G4UImanager* UImanager = G4UImanager::GetUIpointer();  

  if (ui)  {
   //interactive mode
   ui->SessionStart();
   delete ui;
  }
  else  {
   //batch mode  
   G4String command = "/control/execute ";
   G4String fileName = argv[1];
   UImanager->ApplyCommand(command+fileName);
  }

  //job termination 
  delete visManager;
  delete runManager;
}

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