slowing/src/DetectorConstruction.cc

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0025 //
0026 // This example is provided by the Geant4-DNA collaboration
0027 // Any report or published results obtained using the Geant4-DNA software
0028 // shall cite the following Geant4-DNA collaboration publications:
0029 // Med. Phys. 45 (2018) e722-e739
0030 // Phys. Med. 31 (2015) 861-874
0031 // Med. Phys. 37 (2010) 4692-4708
0032 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0033 //
0034 // The Geant4-DNA web site is available at http://geant4-dna.org
0035 //
0036 /// \file medical/dna/slowing/src/DetectorConstruction.cc
0037 /// \brief Implementation of the DetectorConstruction class
0038
0039 #include "DetectorConstruction.hh"
0040
0041 #include "DetectorMessenger.hh"
0042
0043 #include "G4NistManager.hh"
0044 #include "G4RunManager.hh"
0045 #include "G4SystemOfUnits.hh"
0046 #include "G4UnitsTable.hh"
0047 #include "G4UserLimits.hh"
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0050
0051 DetectorConstruction::DetectorConstruction() : G4VUserDetectorConstruction(), fWaterMaterial(0)
0052 {
0053   // Create commands for interactive definition of the detector
0054   fDetectorMessenger = new DetectorMessenger(this);
0055
0056   // Default tracking cut
0057   fTrackingCut = 7.4 * eV;
0058 }
0059
0060 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0061
0062 DetectorConstruction::~DetectorConstruction()
0063 {
0064   delete fDetectorMessenger;
0065 }
0066
0067 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0068
0069 G4VPhysicalVolume* DetectorConstruction::Construct()
0070 {
0071   DefineMaterials();
0072   return ConstructDetector();
0073 }
0074
0075 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0076
0077 void DetectorConstruction::DefineMaterials()
0078 {
0079   // Water is defined from NIST material database
0080   G4NistManager* man = G4NistManager::Instance();
0081
0082   G4Material* H2O = man->FindOrBuildMaterial("G4_WATER");
0083
0084   fWaterMaterial = H2O;
0085
0086   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0087 }
0088
0089 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0090
0091 G4VPhysicalVolume* DetectorConstruction::ConstructDetector()
0092 {
0093   // WORLD VOLUME
0094
0095   G4double worldSizeX = 1 * m;
0096   G4double worldSizeY = worldSizeX;
0097   G4double worldSizeZ = worldSizeX;
0098
0099   G4Box* solidWorld = new G4Box("World",  // its name
0100                                 worldSizeX / 2, worldSizeY / 2, worldSizeZ / 2);  // its size
0101
0102   fLogicWorld = new G4LogicalVolume(solidWorld,  // its solid
0103                                     fWaterMaterial,  // its material
0104                                     "World");  // its name
0105
0106   G4PVPlacement* physiWorld = new G4PVPlacement(0,  // no rotation
0107                                                 G4ThreeVector(),  // at (0,0,0)
0108                                                 fLogicWorld,
0109                                                 "World",  // its name
0110                                                 0,  // its mother  volume
0111                                                 false,  // no boolean operation
0112                                                 0);  // copy number
0113
0114   // Visualization attributes
0115   G4VisAttributes* worldVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
0116   worldVisAtt->SetVisibility(true);
0117   fLogicWorld->SetVisAttributes(worldVisAtt);
0118
0119   G4VisAttributes* worldVisAtt1 = new G4VisAttributes(G4Colour(1.0, 0.0, 0.0));
0120   worldVisAtt1->SetVisibility(true);
0121
0122   // Tracking cut
0123   fLogicWorld->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
0124
0125   PrintParameters();
0126
0127   return physiWorld;
0128 }
0129
0130 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0131
0132 void DetectorConstruction::SetMaterial(G4String materialChoice)
0133 {
0134   // Search the material by its name
0135   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
0136   if (pttoMaterial) fWaterMaterial = pttoMaterial;
0137   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0138 }
0139
0140 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0141
0142 void DetectorConstruction::SetTrackingCut(G4double value)
0143 {
0144   fTrackingCut = value;
0145   G4RunManager::GetRunManager()->ReinitializeGeometry();
0146 }
0147
0148 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0149
0150 void DetectorConstruction::PrintParameters() const
0151 {
0152   G4cout << "\n---------------------------------------------------------\n";
0153   G4cout << "---> The tracking cut is set to " << G4BestUnit(fTrackingCut, "Energy") << G4endl;
0154   G4cout << "\n---------------------------------------------------------\n";
0155 }