parameterisations/Par01/examplePar01.cc

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0025 //
0026 /// \file Par01/examplePar01.cc
0027 /// \brief Main program of the Par01 example
0028 //
0029 //
0030 //
0031 //
0032 // --------------------------------------------------------------
0033 //                     Geant4 - examplePar01
0034 // --------------------------------------------------------------
0035 // Comments
0036 //
0037 // Example of a main program making use of parameterisation
0038 // i.e. "Fast Simulation"
0039 //-------------------------------------------------------------------
0040
0041 #include "G4Types.hh"
0042
0043 //---------------
0044 // -- Geometries:
0045 //---------------
0046 #include "Par01DetectorConstruction.hh"
0047 #include "Par01ParallelWorldForPion.hh"
0048
0049 //---------------------------------------------------------------------
0050 // -- Physics list, and tool to modify it and activate fast simulation:
0051 //---------------------------------------------------------------------
0052 #include "FTFP_BERT.hh"
0053
0054 #include "G4FastSimulationPhysics.hh"
0055 #include "G4RunManagerFactory.hh"
0056 #include "G4UImanager.hh"
0057
0058 // ----------------------------------------------------------------
0059 // -- Action initialization (includes the primary generator action:
0060 // ----------------------------------------------------------------
0061 #include "Par01ActionInitialization.hh"
0062
0063 #include "G4UIExecutive.hh"
0064 #include "G4VisExecutive.hh"
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 int main(int argc, char** argv)
0069 {
0070   // Instantiate G4UIExecutive if interactive mode
0071   G4UIExecutive* ui = nullptr;
0072   if (argc == 1) {
0073     ui = new G4UIExecutive(argc, argv);
0074   }
0075
0076   //-------------------------------
0077   // Initialization of Run manager
0078   //-------------------------------
0079   auto* runManager = G4RunManagerFactory::CreateRunManager();
0080   runManager->SetNumberOfThreads(4);
0081
0082   // -----------------------------------------------------
0083   // -- Detector/mass geometry and parallel geometry(ies):
0084   // -----------------------------------------------------
0085   // -- Mass geometry (ie : standard geometry):
0086   auto detector = new Par01DetectorConstruction();
0087   // -- Parallel geometry for pion parameterisation
0088   detector->RegisterParallelWorld(new Par01ParallelWorldForPion("pionGhostWorld"));
0089   // -- Passed to the run manager:
0090   runManager->SetUserInitialization(detector);
0091
0092   // ----------------------------------------------
0093   // -- PhysicsList and fast simulation activation:
0094   // ----------------------------------------------
0095   // -- Create a physics list (note : FTFP_BERT is a G4VModularPhysicsList
0096   // -- which allows to use the subsequent G4FastSimulationPhysics tool to
0097   // -- activate the fast simulation):
0098   auto physicsList = new FTFP_BERT;
0099   // -- Create helper tool, used to activate the fast simulation:
0100   auto fastSimulationPhysics = new G4FastSimulationPhysics();
0101   fastSimulationPhysics->BeVerbose();
0102   // -- activation of fast simulation for particles having fast simulation models
0103   // -- attached in the mass geometry:
0104   fastSimulationPhysics->ActivateFastSimulation("e-");
0105   fastSimulationPhysics->ActivateFastSimulation("e+");
0106   fastSimulationPhysics->ActivateFastSimulation("gamma");
0107   // -- activation of fast simulation for particles having fast simulation models
0108   // -- attached in the parallel geometry:
0109   fastSimulationPhysics->ActivateFastSimulation("pi+", "pionGhostWorld");
0110   fastSimulationPhysics->ActivateFastSimulation("pi-", "pionGhostWorld");
0111   // -- Attach the fast simulation physics constructor to the physics list:
0112   physicsList->RegisterPhysics(fastSimulationPhysics);
0113   // -- Finally passes the physics list to the run manager:
0114   runManager->SetUserInitialization(physicsList);
0115
0116   //-------------------------------
0117   // UserAction classes
0118   //-------------------------------
0119   runManager->SetUserInitialization(new Par01ActionInitialization);
0120
0121   // Initialize Run manager
0122   runManager->Initialize();
0123
0124   //----------------
0125   // Visualization:
0126   //----------------
0127   G4cout << "Instantiating Visualization Manager......." << G4endl;
0128   G4VisManager* visManager = new G4VisExecutive;
0129   visManager->Initialize();
0130
0131   if (ui) {
0132     //--------------------------
0133     // Define (G)UI
0134     //--------------------------
0135     ui->SessionStart();
0136     delete ui;
0137   }
0138   else {
0139     G4String command = "/control/execute ";
0140     G4String fileName = argv[1];
0141     G4UImanager* UImanager = G4UImanager::GetUIpointer();
0142     UImanager->ApplyCommand(command + fileName);
0143   }
0144
0145   // Free the store: user actions, physics_list and detector_description are
0146   //                 owned and deleted by the run manager, so they should not
0147   //                 be deleted in the main() program !
0148
0149   delete visManager;
0150   delete runManager;
0151
0152   return 0;
0153 }