pythia/decayer6/pythia6_decayer.cc

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0026 //
0027 /// \file eventgenerator/pythia/decayer6/pythia6_decayer.cc
0028 /// \brief Main program of the pythia6Decayer example
0029
0030 #include "DetectorConstruction.hh"
0031 #include "GunPrimaryGeneratorAction.hh"
0032 #include "P6DExtDecayerPhysics.hh"
0033 #include "QGSP_BERT.hh"
0034
0035 #include "G4RunManagerFactory.hh"
0036 #include "G4SystemOfUnits.hh"
0037 #include "G4ThreeVector.hh"
0038 #include "G4UIExecutive.hh"
0039 #include "G4UImanager.hh"
0040 #include "G4VisExecutive.hh"
0041 #include "Randomize.hh"
0042
0043 int main(int argc, char** argv)
0044 {
0045   // Detect interactive mode (if no arguments) and define UI session
0046   //
0047   G4UIExecutive* ui = 0;
0048   if (argc == 1) {
0049     ui = new G4UIExecutive(argc, argv);
0050   }
0051
0052   // Choose the Random engine
0053   //
0054   G4Random::setTheEngine(new CLHEP::RanecuEngine);
0055
0056   // Construct a serial run manager
0057   //
0058   auto* runManager = G4RunManagerFactory::CreateRunManager(G4RunManagerType::SerialOnly);
0059
0060   // Set mandatory initialization classes
0061   //
0062   runManager->SetUserInitialization(new Common::DetectorConstruction);
0063
0064   //
0065   G4VModularPhysicsList* physicsList = new QGSP_BERT;
0066   physicsList->RegisterPhysics(new P6DExtDecayerPhysics());
0067   runManager->SetUserInitialization(physicsList);
0068
0069   // Set user action classes
0070   //
0071   runManager->SetUserAction(new Common::GunPrimaryGeneratorAction("B-", 50. * MeV));
0072   // B- meson has not defined decay in Geant4
0073
0074   // Initialize visualization
0075   //
0076   G4VisManager* visManager = new G4VisExecutive;
0077   // G4VisExecutive can take a verbosity argument - see /vis/verbose guidance.
0078   // G4VisManager* visManager = new G4VisExecutive("Quiet");
0079   visManager->Initialize();
0080
0081   // Get the pointer to the User Interface manager
0082   G4UImanager* UImanager = G4UImanager::GetUIpointer();
0083
0084   // Process macro or start UI session
0085   //
0086   if (!ui) {
0087     // batch mode
0088     G4String command = "/control/execute ";
0089     G4String fileName = argv[1];
0090     UImanager->ApplyCommand(command + fileName);
0091   }
0092   else {
0093     // interactive mode
0094     UImanager->ApplyCommand("/control/execute init_vis.mac");
0095     ui->SessionStart();
0096     delete ui;
0097   }
0098
0099   // Job termination
0100   // Free the store: user actions, physics_list and detector_description are
0101   //                 owned and deleted by the run manager, so they should not
0102   //                 be deleted in the main() program !
0103   delete visManager;
0104   delete runManager;
0105 }