parameterisations/Par01/examplePar01.cc

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