Par01/src/Par01ParallelWorldForPion.cc

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0025 //
0026 /// \file Par01/src/Par01ParallelWorldForPion.cc
0027 /// \brief Implementation of the Par01ParallelWorldForPion class
0028 //
0029 //
0030 #include "Par01ParallelWorldForPion.hh"
0031
0032 #include "Par01PionShowerModel.hh"
0033
0034 #include "G4Box.hh"
0035 #include "G4LogicalVolume.hh"
0036 #include "G4NistManager.hh"
0037 #include "G4PVPlacement.hh"
0038 #include "G4Region.hh"
0039 #include "G4RegionStore.hh"
0040 #include "G4SystemOfUnits.hh"
0041 #include "G4ThreeVector.hh"
0042
0043 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0044
0045 Par01ParallelWorldForPion::Par01ParallelWorldForPion(G4String worldName)
0046   : G4VUserParallelWorld(worldName)
0047 {
0048   ;
0049 }
0050
0051 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0052
0053 Par01ParallelWorldForPion::~Par01ParallelWorldForPion()
0054 {
0055   ;
0056 }
0057
0058 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0059
0060 void Par01ParallelWorldForPion::Construct()
0061 {
0062   // -- Get nist material manager
0063   G4NistManager* nistManager = G4NistManager::Instance();
0064
0065   // Build materials
0066   G4Material* air = nistManager->FindOrBuildMaterial("G4_AIR");
0067
0068   // -------------------------------
0069   //  Build parallel/ghost geometry:
0070   // -------------------------------
0071
0072   // -- Obtain clone of mass geometry world from GetWorld() base class utility:
0073   G4VPhysicalVolume* ghostWorld = GetWorld();
0074   // -- Why needed ? No default ?
0075   ghostWorld->GetLogicalVolume()->SetMaterial(air);
0076   G4Region* parallelWorldRegion = new G4Region("ParallelWorldRegion");
0077   parallelWorldRegion->AddRootLogicalVolume(ghostWorld->GetLogicalVolume());
0078
0079   // -- Create box for encompassing Elec.+Had. calorimeters together:
0080   G4double detectSize = 125 * cm;
0081   G4Box* ghostBox = new G4Box("GhostBox", detectSize + 5 * cm, detectSize + 5 * cm, 80 * cm);
0082   // -- Build the subsequent logical volume:
0083   G4LogicalVolume* ghostLogical = new G4LogicalVolume(ghostBox,
0084                                                       air,  // -- no material : IMPOSSIBLE !!!
0085                                                       "GhostLogical", 0, 0, 0);
0086   // -- And place this logical volume in the parallel geometry:
0087   new G4PVPlacement(0, G4ThreeVector(0., 0., 175 * cm), "GhostPhysical", ghostLogical, ghostWorld,
0088                     false, 0);
0089
0090   // -----------------------
0091   //  Setup fast simulation:
0092   // -----------------------
0093
0094   // -- Make Elec+Had logical volume becoming a region:
0095   G4cout << "Declaring region..." << G4endl;
0096   G4Region* ghostRegion = new G4Region("GhostCalorimeterRegion");
0097   G4cout << "... region declared. Setting it the ghostLogical volume..." << G4endl;
0098   ghostRegion->AddRootLogicalVolume(ghostLogical);
0099   G4cout << "... succes.\n" << G4endl;
0100 }
0101
0102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0103
0104 void Par01ParallelWorldForPion::ConstructSD()
0105 {
0106   G4RegionStore* regionStore = G4RegionStore::GetInstance();
0107
0108   G4Region* ghostRegion = regionStore->GetRegion("GhostCalorimeterRegion");
0109   // -- Attach fast simulation model (create the G4FastSimulationManager if needed):
0110   new Par01PionShowerModel("ghostPionShowerModel", ghostRegion);
0111 }