Gabriele Cosmo
145 lines
5.9 KiB
C++
145 lines
5.9 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 Materials.cc
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/// \brief Implementation of the Materials class
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///
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/// Define materials
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#include "Materials.hh"
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#include "G4Material.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Materials::Materials() {}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Materials::~Materials() {}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Materials::Construct()
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{
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G4double A, Z;
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// ------------------------------------------------------------------------
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// Elements
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// ------------------------------------------------------------------------
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G4Element* elH = new G4Element("Hydrogen", "H", Z = 1., A = 1.00794 * g / mole);
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G4Element* elC = new G4Element("Carbon", "C", Z = 6., A = 12.011 * g / mole);
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G4Element* elN = new G4Element("Nitrogen", "N", Z = 7., A = 14.00674 * g / mole);
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G4Element* elO = new G4Element("Oxygen", "O", Z = 8., A = 15.9994 * g / mole);
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G4Element* elNa = new G4Element("Sodium", "Na", Z = 11., A = 22.989768 * g / mole);
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G4Element* elSi = new G4Element("Silicon", "Si", Z = 14., A = 28.0855 * g / mole);
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G4Element* elAr = new G4Element("Argon", "Ar", Z = 18., A = 39.948 * g / mole);
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G4Element* elI = new G4Element("Iodine", "I", Z = 53., A = 126.90447 * g / mole);
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G4Element* elCs = new G4Element("Cesium", "Cs", Z = 55., A = 132.90543 * g / mole);
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// ------------------------------------------------------------------------
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// Materials
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// ------------------------------------------------------------------------
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G4double density, massfraction;
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G4int natoms, nel;
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// temperature of experimental hall is controlled at 20 degree.
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const G4double expTemp = STP_Temperature + 20. * kelvin;
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// vacuum
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density = universe_mean_density;
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G4Material* Vacuum = new G4Material("Vacuum", density, nel = 2);
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Vacuum->AddElement(elN, .7);
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Vacuum->AddElement(elO, .3);
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// air
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density = 1.2929e-03 * g / cm3; // at 20 degree
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G4Material* Air = new G4Material("Air", density, nel = 3, kStateGas, expTemp);
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G4double ttt = 75.47 + 23.20 + 1.28;
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Air->AddElement(elN, massfraction = 75.47 / ttt);
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Air->AddElement(elO, massfraction = 23.20 / ttt);
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Air->AddElement(elAr, massfraction = 1.28 / ttt);
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// Ar gas
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A = 39.948 * g / mole;
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const G4double denAr = 1.782e-03 * g / cm3 * STP_Temperature / expTemp;
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G4Material* Ar = new G4Material("ArgonGas", Z = 18., A, denAr, kStateGas, expTemp);
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// ethane (C2H6)
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const G4double denEthane = 1.356e-3 * g / cm3 * STP_Temperature / expTemp;
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G4Material* Ethane = new G4Material("Ethane", denEthane, nel = 2, kStateGas, expTemp);
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Ethane->AddElement(elC, natoms = 2);
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Ethane->AddElement(elH, natoms = 6);
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// Ar(50%) + ethane(50%) mixture
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density = (denAr + denEthane) / 2.;
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G4Material* ArEthane = new G4Material("ArEthane", density, nel = 2, kStateGas, expTemp);
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ArEthane->AddMaterial(Ar, massfraction = denAr / density / 2.);
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ArEthane->AddMaterial(Ethane, massfraction = denEthane / density / 2.);
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// silicon
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A = 28.0855 * g / mole;
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density = 2.33 * g / cm3;
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new G4Material("SiliconWafer", Z = 14., A, density);
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// alminium
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A = 26.98 * g / mole;
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density = 2.70 * g / cm3;
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new G4Material("Al", Z = 13., A, density);
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// iron
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A = 55.847 * g / mole;
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density = 7.87 * g / cm3;
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new G4Material("Iron", Z = 26., A, density);
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// lead
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A = 207.2 * g / mole;
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density = 11.35 * g / cm3;
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new G4Material("Lead", Z = 82., A, density);
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// scintillator (Polystyene(C6H5CH=CH2))
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density = 1.032 * g / cm3;
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G4Material* Scinti = new G4Material("Scinti", density, nel = 2);
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Scinti->AddElement(elC, natoms = 8);
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Scinti->AddElement(elH, natoms = 8);
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// quartz (SiO2, crystalline)
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density = 2.64 * g / cm3;
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G4Material* Quartz = new G4Material("Quartz", density, nel = 2);
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Quartz->AddElement(elSi, natoms = 1);
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Quartz->AddElement(elO, natoms = 2);
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// NaI crystal
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density = 3.67 * g / cm3;
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G4Material* NaI = new G4Material("NaI", density, nel = 2);
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NaI->AddElement(elNa, natoms = 1);
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NaI->AddElement(elI, natoms = 1);
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// CsI crystal
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density = 4.51 * g / cm3;
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G4Material* CsI = new G4Material("CsI", density, nel = 2);
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CsI->AddElement(elCs, natoms = 1);
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CsI->AddElement(elI, natoms = 1);
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}
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