microprox/src/DetectorConstruction.cc

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0025 //
0026 /// \file DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028
0029 // This example is provided by the Geant4-DNA collaboration
0030 // Any report or published results obtained using the Geant4-DNA software
0031 // shall cite the following Geant4-DNA collaboration publications:
0032 // Med. Phys. 45 (2018) e722-e739
0033 // Phys. Med. 31 (2015) 861-874
0034 // Med. Phys. 37 (2010) 4692-4708
0035 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0036 //
0037 // The Geant4-DNA web site is available at http://geant4-dna.org
0038 //
0039
0040 #include "DetectorConstruction.hh"
0041
0042 #include "DetectorMessenger.hh"
0043 #include "TrackerSD.hh"
0044
0045 #include "G4Box.hh"
0046 #include "G4GeometryManager.hh"
0047 #include "G4GeometryTolerance.hh"
0048 #include "G4NistManager.hh"
0049 #include "G4PVPlacement.hh"
0050 #include "G4SDManager.hh"
0051 #include "G4SystemOfUnits.hh"
0052 #include "G4UnitsTable.hh"
0053 #include "G4UserLimits.hh"
0054
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0056
0057 DetectorConstruction::DetectorConstruction() : G4VUserDetectorConstruction(), fDetectorMessenger(0)
0058 {
0059   // Default tracking cut
0060   fTrackingCut = 9 * eV;
0061
0062   // Create commands for interactive definition of the detector
0063   fDetectorMessenger = new DetectorMessenger(this);
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 DetectorConstruction::~DetectorConstruction()
0069 {
0070   delete fDetectorMessenger;
0071 }
0072
0073 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0074
0075 G4VPhysicalVolume* DetectorConstruction::Construct()
0076 {
0077   // Define materials
0078   DefineMaterials();
0079
0080   // Define volumes
0081   return DefineVolumes();
0082 }
0083
0084 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0085
0086 void DetectorConstruction::DefineMaterials()
0087 {
0088   // Water is defined from NIST material database
0089   G4NistManager* man = G4NistManager::Instance();
0090
0091   G4Material* H2O = man->FindOrBuildMaterial("G4_WATER");
0092
0093   fWaterMaterial = H2O;
0094
0095   // Print materials
0096   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0097 }
0098
0099 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0100
0101 G4VPhysicalVolume* DetectorConstruction::DefineVolumes()
0102 {
0103   G4double worldLength = 1 * km;
0104
0105   // World
0106
0107   G4GeometryManager::GetInstance()->SetWorldMaximumExtent(worldLength);
0108
0109   G4cout << "Computed tolerance = "
0110          << G4GeometryTolerance::GetInstance()->GetSurfaceTolerance() / nm << " nm" << G4endl;
0111
0112   G4Box* worldS = new G4Box("world",  // its name
0113                             worldLength / 2, worldLength / 2, worldLength / 2);  // its size
0114
0115   G4LogicalVolume* worldLV = new G4LogicalVolume(worldS,  // its solid
0116                                                  fWaterMaterial,  // its material
0117                                                  "World_LV");  // its name
0118
0119   G4VPhysicalVolume* worldPV = new G4PVPlacement(0,  // no rotation
0120                                                  G4ThreeVector(),  // at (0,0,0)
0121                                                  worldLV,  // its logical volume
0122                                                  "World",  // its name
0123                                                  0,  // its mother  volume
0124                                                  false,  // no boolean operations
0125                                                  0,  // copy number
0126                                                  false);  // checking overlaps
0127
0128   worldLV->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
0129
0130   PrintParameters();
0131
0132   return worldPV;
0133 }
0134
0135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0136
0137 void DetectorConstruction::ConstructSDandField()
0138 {
0139   // Sensitive detectors
0140
0141   G4String trackerChamberSDname = "TrackerChamberSD";
0142
0143   TrackerSD* aTrackerSD = new TrackerSD(trackerChamberSDname, "TrackerHitsCollection");
0144
0145   G4SDManager::GetSDMpointer()->AddNewDetector(aTrackerSD);
0146
0147   SetSensitiveDetector("World_LV", aTrackerSD, true);
0148 }
0149
0150 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0151
0152 void DetectorConstruction::SetTrackingCut(G4double value)
0153 {
0154   fTrackingCut = value;
0155 }
0156
0157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0158
0159 void DetectorConstruction::PrintParameters() const
0160 {
0161   G4cout << "\n---------------------------------------------------------\n";
0162   G4cout << "---> The tracking cut is set to " << G4BestUnit(fTrackingCut, "Energy") << G4endl;
0163   G4cout << "\n---------------------------------------------------------\n";
0164 }
0165
0166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......