Gabriele Cosmo
241 lines
8.9 KiB
C++
241 lines
8.9 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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/// \file DetectorConstruction.cc
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/// \brief Implementation of the DetectorConstruction class
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//
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// $Id: DetectorConstruction.cc 70755 2013-06-05 12:17:48Z ihrivnac $
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "DetectorConstruction.hh"
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#include "DetectorMessenger.hh"
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#include "G4Material.hh"
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#include "G4NistManager.hh"
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#include "G4Box.hh"
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#include "G4Sphere.hh"
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#include "G4LogicalVolume.hh"
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#include "G4PVPlacement.hh"
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#include "G4GeometryManager.hh"
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#include "G4PhysicalVolumeStore.hh"
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#include "G4LogicalVolumeStore.hh"
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#include "G4SolidStore.hh"
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#include "G4RunManager.hh"
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#include "G4UnitsTable.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4PhysicalConstants.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::DetectorConstruction()
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:G4VUserDetectorConstruction(),
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fMaterial(0), fLAbsor(0), fWorldMat(0), fPWorld(0), fDetectorMessenger(0)
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{
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fRadius = 30*cm;
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fWorldSize = 1.1*fRadius;
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DefineMaterials();
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SetMaterial("Water_ts");
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fDetectorMessenger = new DetectorMessenger(this);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::~DetectorConstruction()
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{ delete fDetectorMessenger;}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::Construct()
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{
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return ConstructVolumes();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::DefineMaterials()
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{
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// specific element name for thermal neutronHP
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// (see G4ParticleHPThermalScatteringNames.cc)
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G4int ncomponents, natoms;
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// pressurized water
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G4Element* H = new G4Element("TS_H_of_Water" ,"H" , 1., 1.0079*g/mole);
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G4Element* O = new G4Element("Oxygen" ,"O" , 8., 16.00*g/mole);
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G4Material* H2O =
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new G4Material("Water_ts", 1.000*g/cm3, ncomponents=2,
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kStateLiquid, 593*kelvin, 150*bar);
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H2O->AddElement(H, natoms=2);
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H2O->AddElement(O, natoms=1);
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H2O->GetIonisation()->SetMeanExcitationEnergy(78.0*eV);
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// heavy water
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G4Isotope* H2 = new G4Isotope("H2",1,2);
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G4Element* D = new G4Element("TS_D_of_Heavy_Water", "D", 1);
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D->AddIsotope(H2, 100*perCent);
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G4Material* D2O = new G4Material("HeavyWater", 1.11*g/cm3, ncomponents=2,
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kStateLiquid, 293.15*kelvin, 1*atmosphere);
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D2O->AddElement(D, natoms=2);
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D2O->AddElement(O, natoms=1);
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// graphite
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G4Isotope* C12 = new G4Isotope("C12", 6, 12);
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G4Element* C = new G4Element("TS_C_of_Graphite","C", ncomponents=1);
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C->AddIsotope(C12, 100.*perCent);
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G4Material* graphite =
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new G4Material("graphite", 2.27*g/cm3, ncomponents=1,
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kStateSolid, 293*kelvin, 1*atmosphere);
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graphite->AddElement(C, natoms=1);
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//NE213
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G4Material* ne213 =
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new G4Material("NE213", 0.874*g/cm3, ncomponents=2);
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ne213->AddElement(H, 9.2*perCent);
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ne213->AddElement(C, 90.8*perCent);
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// example of vacuum
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fWorldMat = new G4Material("Galactic", 1, 1.01*g/mole, universe_mean_density,
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kStateGas, 2.73*kelvin, 3.e-18*pascal);
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///G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4Material* DetectorConstruction::MaterialWithSingleIsotope( G4String name,
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G4String symbol, G4double density, G4int Z, G4int A)
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{
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// define a material from an isotope
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//
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G4int ncomponents;
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G4double abundance, massfraction;
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G4Isotope* isotope = new G4Isotope(symbol, Z, A);
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G4Element* element = new G4Element(name, symbol, ncomponents=1);
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element->AddIsotope(isotope, abundance= 100.*perCent);
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G4Material* material = new G4Material(name, density, ncomponents=1);
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material->AddElement(element, massfraction=100.*perCent);
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return material;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
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{
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// Cleanup old geometry
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G4GeometryManager::GetInstance()->OpenGeometry();
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G4PhysicalVolumeStore::GetInstance()->Clean();
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G4LogicalVolumeStore::GetInstance()->Clean();
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G4SolidStore::GetInstance()->Clean();
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// World
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//
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G4Box*
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sWorld = new G4Box("World", //name
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fWorldSize,fWorldSize,fWorldSize); //dimensions
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G4LogicalVolume*
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lWorld = new G4LogicalVolume(sWorld, //shape
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fWorldMat, //material
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"World"); //name
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fPWorld = new G4PVPlacement(0, //no rotation
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G4ThreeVector(), //at (0,0,0)
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lWorld, //logical volume
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"World", //name
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0, //mother volume
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false, //no boolean operation
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0); //copy number
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// Absorber
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//
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G4Sphere*
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sAbsor = new G4Sphere("Absorber", //name
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0., fRadius, 0., twopi, 0., pi); //dimensions
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fLAbsor = new G4LogicalVolume(sAbsor, //shape
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fMaterial, //material
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fMaterial->GetName()); //name
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new G4PVPlacement(0, //no rotation
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G4ThreeVector(), //at (0,0,0)
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fLAbsor, //logical volume
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fMaterial->GetName(), //name
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lWorld, //mother volume
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false, //no boolean operation
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0); //copy number
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PrintParameters();
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//always return the root volume
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//
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return fPWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::PrintParameters()
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{
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G4cout << "\n The Absorber is " << G4BestUnit(fRadius,"Length")
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<< " of " << fMaterial->GetName()
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<< "\n \n" << fMaterial << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetMaterial(G4String materialChoice)
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{
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// search the material by its name
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G4Material* pttoMaterial =
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G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
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if (pttoMaterial) {
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fMaterial = pttoMaterial;
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if(fLAbsor) { fLAbsor->SetMaterial(fMaterial); }
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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} else {
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G4cout << "\n--> warning from DetectorConstruction::SetMaterial : "
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<< materialChoice << " not found" << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetRadius(G4double value)
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{
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fRadius = value;
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G4RunManager::GetRunManager()->ReinitializeGeometry();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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