GB01/src/GB01DetectorConstruction.cc

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0025 //
0026 /// \file GB01/src/GB01DetectorConstruction.cc
0027 /// \brief Implementation of the GB01DetectorConstruction class
0028 //
0029 #include "GB01DetectorConstruction.hh"
0030
0031 #include "GB01BOptrMultiParticleChangeCrossSection.hh"
0032
0033 #include "G4Box.hh"
0034 #include "G4Colour.hh"
0035 #include "G4LogicalVolume.hh"
0036 #include "G4LogicalVolumeStore.hh"
0037 #include "G4Material.hh"
0038 #include "G4NistManager.hh"
0039 #include "G4PVPlacement.hh"
0040 #include "G4SystemOfUnits.hh"
0041 #include "G4UniformMagField.hh"
0042 #include "G4VisAttributes.hh"
0043
0044 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0045
0046 GB01DetectorConstruction::GB01DetectorConstruction(G4bool bf) : fBiasingFlag(bf) {}
0047
0048 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0049
0050 GB01DetectorConstruction::~GB01DetectorConstruction() = default;
0051
0052 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0053
0054 G4VPhysicalVolume* GB01DetectorConstruction::Construct()
0055 {
0056   G4Material* worldMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
0057   G4Material* defaultMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_lN2");
0058
0059   G4VSolid* solidWorld = new G4Box("World", 10 * m, 10 * m, 10 * m);
0060
0061   auto logicWorld = new G4LogicalVolume(solidWorld,  // its solid
0062                                         worldMaterial,  // its material
0063                                         "World");  // its name
0064
0065   auto physiWorld = new G4PVPlacement(nullptr,  // no rotation
0066                                       G4ThreeVector(),  // at (0,0,0)
0067                                       logicWorld,  // its logical volume
0068                                       "World",  // its name
0069                                       nullptr,  // its mother volume
0070                                       false,  // no boolean operation
0071                                       0);  // copy number
0072
0073   // -----------------------------------
0074   // -- volume where biasing is applied:
0075   // -----------------------------------
0076   G4double halfZ = 10 * cm;
0077   G4VSolid* solidTest = new G4Box("test.solid", 1 * m, 1 * m, halfZ);
0078
0079   auto logicTest = new G4LogicalVolume(solidTest,  // its solid
0080                                        defaultMaterial,  // its material
0081                                        "test.logical");  // its name
0082
0083   new G4PVPlacement(nullptr,  // no rotation
0084                     G4ThreeVector(0, 0, halfZ),  // volume entrance at (0,0,0)
0085                     logicTest,  // its logical volume
0086                     "test.phys",  // its name
0087                     logicWorld,  // its mother  volume
0088                     false,  // no boolean operation
0089                     0);  // copy number
0090
0091   return physiWorld;
0092 }
0093
0094 void GB01DetectorConstruction::ConstructSDandField()
0095 {
0096   if (fBiasingFlag) {
0097     // -- Fetch volume for biasing:
0098     G4LogicalVolume* logicTest = G4LogicalVolumeStore::GetInstance()->GetVolume("test.logical");
0099
0100     // ----------------------------------------------
0101     // -- operator creation and attachment to volume:
0102     // ----------------------------------------------
0103     auto testMany = new GB01BOptrMultiParticleChangeCrossSection();
0104     testMany->AddParticle("gamma");
0105     testMany->AddParticle("neutron");
0106     testMany->AttachTo(logicTest);
0107     G4cout << " Attaching biasing operator " << testMany->GetName() << " to logical volume "
0108            << logicTest->GetName() << G4endl;
0109   }
0110 }