Pol01.cc

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// 
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#include "G4Types.hh"

#include "G4RunManager.hh"
#include "G4UImanager.hh"
#include "Randomize.hh"

#include "DetectorConstruction.hh"
#include "PhysicsList.hh"
#include "PrimaryGeneratorAction.hh"

#include "RunAction.hh"
#include "EventAction.hh"
#include "SteppingAction.hh"

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

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int main(int argc,char** argv) {
 
  // Instantiate G4UIExecutive if interactive mode
  G4UIExecutive* ui = nullptr;
  if ( argc == 1 ) {
    ui = new G4UIExecutive(argc, argv);
  }

  //choose the Random engine
  //  CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine);
  CLHEP::HepRandom::setTheEngine(new CLHEP::RanluxEngine());
  
  // Construct the default run manager
  G4RunManager * runManager = new G4RunManager;

  // set mandatory initialization classes
  DetectorConstruction* det;
  PrimaryGeneratorAction* prim;
  runManager->SetUserInitialization(det = new DetectorConstruction);
  runManager->SetUserInitialization(new PhysicsList);
  runManager->SetUserAction(prim = new PrimaryGeneratorAction(det));

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

  // set user action classes
  RunAction* run;  
  runManager->SetUserAction(run = new RunAction(det,prim)); 
  runManager->SetUserAction(new EventAction(run));
  runManager->SetUserAction(new SteppingAction(det,prim,run));
   
  // get the pointer to the User Interface manager 
    G4UImanager* UImanager = G4UImanager::GetUIpointer();  

  if (ui)   // Define UI terminal for 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;

  return 0;
}

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