electronScattering2.cc

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// ********************************************************************
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// * technical work of the GEANT4 collaboration.                      *
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//
// $Id: electronScattering2.cc 93734 2015-10-30 10:59:21Z gcosmo $
//

#ifdef G4MULTITHREADED
#include "G4MTRunManager.hh"
#else
#include "G4RunManager.hh"
#endif

#include "Randomize.hh"
#include "G4ScoringManager.hh"

#ifdef G4VIS_USE
#include "G4VisExecutive.hh"
#endif

#include "G4UImanager.hh"
#ifdef G4UI_USE
#include "G4UIExecutive.hh"
#endif

#include "ElectronBenchmarkDetector.hh"
#include "PhysicsList.hh"
#include "ElectronActionInitialization.hh"

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int main(int argc,char** argv) {
    
    // Parse the arguments
    G4String outputFile = "output.csv";
    G4String startingSeed = "1";
    G4String macroFile = "None";
    if (argc > 1) macroFile = argv[1];
    if (argc > 2) startingSeed = argv[2];
    if (argc > 3) outputFile = argv[3];
    G4cout << "Starting run with" << G4endl;
    G4cout << "Macro File    : " << macroFile << G4endl;
    G4cout << "Starting Seed : " << startingSeed << G4endl;
    G4cout << "Output File   : " << outputFile << G4endl;
    
    // Instantiate the run manager
#ifdef G4MULTITHREADED
    G4MTRunManager* runManager = new G4MTRunManager;
#else
    G4RunManager* runManager = new G4RunManager;
#endif

    // Instantiate the random engine
    G4Random::setTheEngine(new CLHEP::MTwistEngine);
    
    // Convert the starting seed to integer and feed it to the random engine
    unsigned startingSeedInt;
    std::istringstream is(startingSeed);
    is >> startingSeedInt;
    G4Random::setTheSeed(startingSeedInt);
    
    // Instantiate the scoring manager
    G4ScoringManager::GetScoringManager();
    
    // Instantiate the geometry
    runManager->SetUserInitialization(new ElectronBenchmarkDetector);
    
    // Instantiate the physics list (in turn calls one of the choices of 
    // physics list)
    runManager->SetUserInitialization(new PhysicsList);
    
    // set user action classes
    runManager->SetUserInitialization(
        new ElectronActionInitialization(outputFile));
    
    if (argc == 1)
    {
        // Since no macro was specified, instantiate an interactive session 
        // (exact session type depends on user preference expressed in 
        // environment variables).
        //
        // Instantiate the visualization System
#ifdef G4VIS_USE
        G4VisManager* visManager = new G4VisExecutive;
        visManager->Initialize();
#endif

#ifdef G4UI_USE
        G4UIExecutive* ui = new G4UIExecutive(argc, argv);
        ui->SessionStart();
        delete ui;
#endif

#ifdef G4VIS_USE
        delete visManager;
#endif
    }
    else
    {
        // A macro was specified.  Execute it.
        G4UImanager* UImanager = G4UImanager::GetUIpointer();
        G4String command = "/control/execute ";
        UImanager->ApplyCommand(command+macroFile);
    }
    
    delete runManager;
    
    return 0;
}

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