413 lines
14 KiB
C++
413 lines
14 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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/// \file GB03DetectorConstruction.cc
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/// \brief Implementation of the GB03DetectorConstruction class
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#include "GB03DetectorConstruction.hh"
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#include "GB03BOptrGeometryBasedBiasing.hh"
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#include "GB03DetectorMessenger.hh"
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#include "G4Box.hh"
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#include "G4Colour.hh"
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#include "G4LogicalVolume.hh"
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#include "G4Material.hh"
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#include "G4MultiFunctionalDetector.hh"
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#include "G4PSEnergyDeposit.hh"
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#include "G4PSFlatSurfaceFlux.hh"
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#include "G4PVPlacement.hh"
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#include "G4PVReplica.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4RunManager.hh"
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#include "G4SDChargedFilter.hh"
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#include "G4SDManager.hh"
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#include "G4SDNeutralFilter.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4VisAttributes.hh"
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#include "G4ios.hh"
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G4int GB03DetectorConstruction::fNumberOfLayers = 40;
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G4ThreadLocal G4bool GB03DetectorConstruction::fConstructedSDandField = false;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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GB03DetectorConstruction::GB03DetectorConstruction(G4bool bf)
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: G4VUserDetectorConstruction(),
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fTotalThickness(2.0 * m),
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fLayerThickness(0.),
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fConstructed(false),
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fWorldMaterial(0),
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fAbsorberMaterial(0),
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fGapMaterial(0),
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fLayerSolid(0),
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fGapSolid(0),
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fWorldLogical(0),
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fCalorLogical(0),
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fLayerLogical(0),
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fGapLogical(0),
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fWorldPhysical(0),
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fCalorPhysical(0),
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fLayerPhysical(0),
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fGapPhysical(0),
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fDetectorMessenger(0),
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fVerboseLevel(1),
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fBiasingFlag(bf)
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{
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fLayerThickness = fTotalThickness / fNumberOfLayers;
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fCalName = "Calor";
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fDetectorMessenger = new GB03DetectorMessenger(this);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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GB03DetectorConstruction::~GB03DetectorConstruction()
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{
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delete fDetectorMessenger;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* GB03DetectorConstruction::Construct()
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{
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if (!fConstructed) {
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fConstructed = true;
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DefineMaterials();
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SetupGeometry();
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}
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if (GetVerboseLevel() > 0) {
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PrintCalorParameters();
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}
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return fWorldPhysical;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::ConstructSDandField()
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{
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if (!fConstructedSDandField) {
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fConstructedSDandField = true;
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SetupDetectors();
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if(fBiasingFlag) {
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SetupBiasing();
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::DefineMaterials()
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{
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G4String name, symbol; // a=mass of a mole;
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G4double a, z, density; // z=mean number of protons;
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G4int iz; // iz=number of protons in an isotope;
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G4int n; // n=number of nucleons in an isotope;
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G4int ncomponents, natoms;
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G4double abundance, fractionmass;
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G4double temperature, pressure;
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//
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// define Elements
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//
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a = 1.01 * g / mole;
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G4Element* H = new G4Element(name = "Hydrogen", symbol = "H", z = 1., a);
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a = 12.01 * g / mole;
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G4Element* C = new G4Element(name = "Carbon", symbol = "C", z = 6., a);
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a = 14.01 * g / mole;
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G4Element* N = new G4Element(name = "Nitrogen", symbol = "N", z = 7., a);
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a = 16.00 * g / mole;
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G4Element* O = new G4Element(name = "Oxygen", symbol = "O", z = 8., a);
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//
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// define an Element from isotopes, by relative abundance
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//
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G4Isotope* U5 = new G4Isotope(name = "U235", iz = 92, n = 235, a = 235.01 * g / mole);
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G4Isotope* U8 = new G4Isotope(name = "U238", iz = 92, n = 238, a = 238.03 * g / mole);
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G4Element* U = new G4Element(name = "enriched Uranium", symbol = "U", ncomponents = 2);
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U->AddIsotope(U5, abundance = 90. * perCent);
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U->AddIsotope(U8, abundance = 10. * perCent);
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//
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// define simple materials
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//
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new G4Material(name = "Aluminium", z = 13., a = 26.98 * g / mole, density = 2.700 * g / cm3);
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new G4Material(name = "Silicon", z = 14., a = 28.09 * g / mole, density = 2.33 * g / cm3);
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new G4Material(name = "Iron", z = 26., a = 55.85 * g / mole, density = 7.87 * g / cm3);
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new G4Material(name = "ArgonGas", z = 18., a = 39.95 * g / mole, density = 1.782 * mg / cm3);
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new G4Material(name = "He", z = 2., a = 4.0 * g / mole, density = 0.1786e-03 * g / cm3);
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density = 1.390 * g / cm3;
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a = 39.95 * g / mole;
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new G4Material(name = "liquidArgon", z = 18., a, density);
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density = 11.35 * g / cm3;
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a = 207.19 * g / mole;
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G4Material* Pb = new G4Material(name = "Lead", z = 82., a, density);
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//
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// define a material from elements. case 1: chemical molecule
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//
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density = 1.000 * g / cm3;
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G4Material* H2O = new G4Material(name = "Water", density, ncomponents = 2);
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H2O->AddElement(H, natoms = 2);
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H2O->AddElement(O, natoms = 1);
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density = 1.032 * g / cm3;
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G4Material* Sci = new G4Material(name = "Scintillator", density, ncomponents = 2);
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Sci->AddElement(C, natoms = 9);
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Sci->AddElement(H, natoms = 10);
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//
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// define a material from elements. case 2: mixture by fractional mass
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//
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density = 1.290 * mg / cm3;
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G4Material* Air = new G4Material(name = "Air", density, ncomponents = 2);
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Air->AddElement(N, fractionmass = 0.7);
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Air->AddElement(O, fractionmass = 0.3);
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//
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// examples of vacuum
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//
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density = universe_mean_density;
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pressure = 3.e-18 * pascal;
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temperature = 2.73 * kelvin;
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G4Material* Vacuum = new G4Material(name = "Galactic", z = 1., a = 1.01 * g / mole, density,
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kStateGas, temperature, pressure);
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if (GetVerboseLevel() > 1) {
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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}
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// default materials of the calorimeter
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fWorldMaterial = Vacuum;
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fAbsorberMaterial = Pb;
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fGapMaterial = Sci;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::SetupGeometry()
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{
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//
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// World
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//
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G4VSolid* worldSolid = new G4Box("World", 2. * m, 2. * m, fTotalThickness * 2.);
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fWorldLogical = new G4LogicalVolume(worldSolid, fWorldMaterial, "World");
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fWorldPhysical = new G4PVPlacement(0, G4ThreeVector(), fWorldLogical, "World", 0, false, 0);
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//
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// Calorimeter
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//
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G4VSolid* calorSolid = new G4Box("Calor", 0.5 * m, 0.5 * m, fTotalThickness / 2.);
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fCalorLogical = new G4LogicalVolume(calorSolid, fAbsorberMaterial, fCalName);
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fCalorPhysical = new G4PVPlacement(0, G4ThreeVector(0., 0., 0.), fCalorLogical, fCalName,
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fWorldLogical, false, 0);
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//
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// Layers --- as absorbers
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//
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fLayerSolid = new G4Box("Layer", 0.5 * m, 0.5 * m, fLayerThickness / 2.);
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fLayerLogical = new G4LogicalVolume(fLayerSolid, fAbsorberMaterial, fCalName + "_LayerLog");
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fLayerPhysical = new G4PVReplica(fCalName + "_Layer", fLayerLogical, fCalorLogical, kZAxis,
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fNumberOfLayers, fLayerThickness);
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//
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// Gap
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//
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fGapSolid = new G4Box("Gap", 0.5 * m, 0.5 * m, fLayerThickness / 4.);
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fGapLogical = new G4LogicalVolume(fGapSolid, fGapMaterial, fCalName + "_Gap");
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fGapPhysical = new G4PVPlacement(0, G4ThreeVector(0., 0., fLayerThickness / 4.), fGapLogical,
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fCalName + "_gap", fLayerLogical, false, 0);
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//
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// Visualization attributes
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//
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fWorldLogical->SetVisAttributes(G4VisAttributes::GetInvisible());
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G4VisAttributes* simpleBoxVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
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simpleBoxVisAtt->SetVisibility(true);
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fCalorLogical->SetVisAttributes(simpleBoxVisAtt);
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fLayerLogical->SetVisAttributes(simpleBoxVisAtt);
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fGapLogical->SetVisAttributes(simpleBoxVisAtt);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::SetupDetectors()
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{
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G4SDManager::GetSDMpointer()->SetVerboseLevel(1);
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G4String filterName;
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G4SDNeutralFilter* neutralFilter = new G4SDNeutralFilter(filterName = "neutralFilter");
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G4SDChargedFilter* chargedFilter = new G4SDChargedFilter(filterName = "chargedFilter");
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for (G4int j = 0; j < 2; j++) {
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// Loop counter j = 0 : absorber
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// = 1 : gap
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G4String detName = fCalName;
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if (j == 0) {
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detName += "_abs";
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}
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else {
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detName += "_gap";
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}
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G4MultiFunctionalDetector* det = new G4MultiFunctionalDetector(detName);
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G4SDManager::GetSDMpointer()->AddNewDetector(det);
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// The second argument in each primitive means the "level" of geometrical
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// hierarchy, the copy number of that level is used as the key of the
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// G4THitsMap.
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// For absorber (j = 0), the copy number of its own physical volume is used.
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// For gap (j = 1), the copy number of its mother physical volume is used,
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// since there is only one physical volume of gap is placed with respect
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// to its mother.
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G4VPrimitiveScorer* primitive;
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primitive = new G4PSEnergyDeposit("eDep", j);
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det->RegisterPrimitive(primitive);
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primitive = new G4PSFlatSurfaceFlux("nNeutral", 1, j);
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primitive->SetFilter(neutralFilter);
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det->RegisterPrimitive(primitive);
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primitive = new G4PSFlatSurfaceFlux("nCharged", 1, j);
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primitive->SetFilter(chargedFilter);
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det->RegisterPrimitive(primitive);
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if (j == 0) {
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SetSensitiveDetector(fLayerLogical, det);
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}
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else {
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SetSensitiveDetector(fGapLogical, det);
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}
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}
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G4SDManager::GetSDMpointer()->SetVerboseLevel(0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::SetupBiasing()
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{
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GB03BOptrGeometryBasedBiasing* biasingOperator = new GB03BOptrGeometryBasedBiasing();
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biasingOperator->AttachTo(fLayerLogical);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::PrintCalorParameters() const
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{
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G4cout << "--------------------------------------------------------" << G4endl;
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G4cout << " Absorber is made of " << fAbsorberMaterial->GetName() << G4endl << " Gap is made of "
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<< fGapMaterial->GetName() << G4endl
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<< "--------------------------------------------------------" << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::SetAbsorberMaterial(G4String materialChoice)
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{
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// search the material by its name
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G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
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if (pttoMaterial) {
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fAbsorberMaterial = pttoMaterial;
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if (fConstructed) {
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fCalorLogical->SetMaterial(fAbsorberMaterial);
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fLayerLogical->SetMaterial(fAbsorberMaterial);
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}
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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if (GetVerboseLevel() > 1) {
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PrintCalorParameters();
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}
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}
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else {
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G4cerr << materialChoice << " is not defined. - Command is ignored." << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4String GB03DetectorConstruction::GetAbsorberMaterial() const
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{
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return fAbsorberMaterial->GetName();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::SetGapMaterial(G4String materialChoice)
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{
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// search the material by its name
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G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
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if (pttoMaterial) {
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fGapMaterial = pttoMaterial;
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if (fConstructed) {
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fGapLogical->SetMaterial(fGapMaterial);
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}
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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if (GetVerboseLevel() > 1) {
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PrintCalorParameters();
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}
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}
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else {
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G4cerr << materialChoice << " is not defined. - Command is ignored." << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4String GB03DetectorConstruction::GetGapMaterial() const
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{
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return fGapMaterial->GetName();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void GB03DetectorConstruction::SetNumberOfLayers(G4int nl)
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{
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fNumberOfLayers = nl;
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fLayerThickness = fTotalThickness / fNumberOfLayers;
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if (!fConstructed) return;
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fLayerSolid->SetZHalfLength(fLayerThickness / 2.);
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fGapSolid->SetZHalfLength(fLayerThickness / 4.);
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fCalorLogical->RemoveDaughter(fLayerPhysical);
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delete fLayerPhysical;
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fLayerPhysical = new G4PVReplica(fCalName + "_Layer", fLayerLogical, fCalorLogical, kZAxis,
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fNumberOfLayers, fLayerThickness);
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fGapPhysical->SetTranslation(G4ThreeVector(0., 0., fLayerThickness / 4.));
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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