412 lines
14 KiB
C++
412 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 "G4RunManager.hh"
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#include "G4Material.hh"
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#include "G4Box.hh"
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#include "G4LogicalVolume.hh"
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#include "G4PVPlacement.hh"
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#include "G4PVReplica.hh"
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#include "G4VisAttributes.hh"
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#include "G4Colour.hh"
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#include "G4SDManager.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 "G4SDNeutralFilter.hh"
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#include "G4SDChargedFilter.hh"
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#include "G4ios.hh"
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#include "GB03DetectorMessenger.hh"
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#include "GB03BOptrGeometryBasedBiasing.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.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()
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: G4VUserDetectorConstruction(),
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fTotalThickness (2.0*m), fLayerThickness(0.),
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fConstructed(false),
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fWorldMaterial(0), fAbsorberMaterial(0), fGapMaterial(0),
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fLayerSolid(0), fGapSolid(0),
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fWorldLogical(0), fCalorLogical(0), fLayerLogical(0), fGapLogical(0),
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fWorldPhysical(0), fCalorPhysical(0), fLayerPhysical(0), fGapPhysical(0),
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fDetectorMessenger(0), fVerboseLevel(1)
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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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{ delete fDetectorMessenger;}
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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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{
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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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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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{
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fConstructedSDandField = true;
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SetupDetectors();
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SetupBiasing();
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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,
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density,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",
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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.),
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fCalorLogical,fCalName,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
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= new G4LogicalVolume(fLayerSolid,fAbsorberMaterial,fCalName+"_LayerLog");
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fLayerPhysical
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= new G4PVReplica(fCalName+"_Layer",fLayerLogical,fCalorLogical,
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kZAxis,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.),
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fGapLogical,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
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= new G4SDNeutralFilter(filterName="neutralFilter");
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G4SDChargedFilter* chargedFilter
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= new G4SDChargedFilter(filterName="chargedFilter");
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for(G4int j=0;j<2;j++)
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{
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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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else
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{ detName += "_gap"; }
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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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else
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{ SetSensitiveDetector(fGapLogical, det);}
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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
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<< "--------------------------------------------------------" << G4endl;
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G4cout
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<< " Absorber is made of " << fAbsorberMaterial->GetName() << G4endl
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<< " Gap is made of " << 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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{
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fAbsorberMaterial = pttoMaterial;
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if(fConstructed)
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{
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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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{
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G4cerr
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<< 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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{ return fAbsorberMaterial->GetName(); }
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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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{
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fGapMaterial = pttoMaterial;
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if(fConstructed)
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{ fGapLogical->SetMaterial(fGapMaterial); }
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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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{
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G4cerr
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<< 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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{ return fGapMaterial->GetName(); }
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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
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= new G4PVReplica(fCalName+"_Layer",fLayerLogical,fCalorLogical,
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kZAxis,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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