Gabriele Cosmo
450 lines
15 KiB
C++
450 lines
15 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 field/field03/src/F03DetectorConstruction.cc
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/// \brief Implementation of the F03DetectorConstruction class
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//
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//
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//
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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 "F03DetectorConstruction.hh"
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#include "F03CalorimeterSD.hh"
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#include "F03DetectorMessenger.hh"
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#include "G4AutoDelete.hh"
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#include "G4GeometryManager.hh"
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#include "G4FieldBuilder.hh"
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#include "G4LogicalVolume.hh"
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#include "G4LogicalVolumeStore.hh"
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#include "G4Material.hh"
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#include "G4PVPlacement.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4PhysicalVolumeStore.hh"
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#include "G4RunManager.hh"
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#include "G4SDManager.hh"
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#include "G4SolidStore.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4Tubs.hh"
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#include "G4UniformMagField.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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F03DetectorConstruction::F03DetectorConstruction()
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{
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fDetectorMessenger = new F03DetectorMessenger(this);
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// create field builder
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// this will create commands for field parameters
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G4FieldBuilder* fieldBuilder = G4FieldBuilder::Instance();
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// fieldBuilder->SetVerboseLevel(2);
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auto globalFieldParameters = fieldBuilder->GetFieldParameters();
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auto localFieldParameters = fieldBuilder->CreateFieldParameters("Radiator");
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// set default min step 0.25 mm
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globalFieldParameters->SetMinimumStep(0.25 * mm);
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localFieldParameters->SetMinimumStep(0.25 * mm);
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// create materials
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DefineMaterials();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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F03DetectorConstruction::~F03DetectorConstruction()
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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* F03DetectorConstruction::Construct()
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{
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return ConstructCalorimeter();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::DefineMaterials()
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{
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// This function illustrates the possible ways to define materials
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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 nel;
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G4int ncomponents;
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G4double fractionmass, pressure, temperature;
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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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auto elH = new G4Element(name = "Hydrogen", symbol = "H", z = 1., a);
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a = 12.01 * g / mole;
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auto elC = new G4Element(name = "Carbon", symbol = "C", z = 6., a);
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a = 14.01 * g / mole;
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auto elN = new G4Element(name = "Nitrogen", symbol = "N", z = 7., a);
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a = 16.00 * g / mole;
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auto elO = new G4Element(name = "Oxygen", symbol = "O", z = 8., a);
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a = 39.948 * g / mole;
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auto elAr = new G4Element(name = "Argon", symbol = "Ar", z = 18., a);
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//
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// define simple materials
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//
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// Mylar
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density = 1.39 * g / cm3;
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auto mylar = new G4Material(name = "Mylar", density, nel = 3);
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mylar->AddElement(elO, 2);
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mylar->AddElement(elC, 5);
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mylar->AddElement(elH, 4);
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// Polypropelene
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auto CH2 = new G4Material("Polypropelene", 0.91 * g / cm3, 2);
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CH2->AddElement(elH, 2);
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CH2->AddElement(elC, 1);
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// Krypton as detector gas, STP
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density = 3.700 * mg / cm3;
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a = 83.80 * g / mole;
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auto Kr = new G4Material(name = "Kr", z = 36., a, density);
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// Dry air (average composition)
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density = 1.7836 * mg / cm3; // STP
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auto argon = new G4Material(name = "Argon", density, ncomponents = 1);
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argon->AddElement(elAr, 1);
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density = 1.25053 * mg / cm3; // STP
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auto nitrogen = new G4Material(name = "N2", density, ncomponents = 1);
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nitrogen->AddElement(elN, 2);
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density = 1.4289 * mg / cm3; // STP
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auto oxygen = new G4Material(name = "O2", density, ncomponents = 1);
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oxygen->AddElement(elO, 2);
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density = 1.2928 * mg / cm3; // STP
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density *= 1.0e-8; // pumped vacuum
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temperature = STP_Temperature;
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pressure = 1.0e-8 * STP_Pressure;
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auto air =
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new G4Material(name = "Air", density, ncomponents = 3, kStateGas, temperature, pressure);
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air->AddMaterial(nitrogen, fractionmass = 0.7557);
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air->AddMaterial(oxygen, fractionmass = 0.2315);
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air->AddMaterial(argon, fractionmass = 0.0128);
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// Xenon as detector gas, STP
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density = 5.858 * mg / cm3;
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a = 131.29 * g / mole;
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auto Xe = new G4Material(name = "Xenon", z = 54., a, density);
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// Carbon dioxide, STP
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density = 1.842 * mg / cm3;
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auto CarbonDioxide = new G4Material(name = "CO2", density, nel = 2);
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CarbonDioxide->AddElement(elC, 1);
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CarbonDioxide->AddElement(elO, 2);
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// 80% Xe + 20% CO2, STP
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density = 5.0818 * mg / cm3;
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auto Xe20CO2 = new G4Material(name = "Xe20CO2", density, ncomponents = 2);
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Xe20CO2->AddMaterial(Xe, fractionmass = 0.922);
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Xe20CO2->AddMaterial(CarbonDioxide, fractionmass = 0.078);
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// 80% Kr + 20% CO2, STP
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density = 3.601 * mg / cm3;
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auto Kr20CO2 = new G4Material(name = "Kr20CO2", density, ncomponents = 2);
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Kr20CO2->AddMaterial(Kr, fractionmass = 0.89);
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Kr20CO2->AddMaterial(CarbonDioxide, fractionmass = 0.11);
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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// default materials of the calorimeter and TR radiator
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fRadiatorMat = air; // CH2 ; // mylar;
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fAbsorberMaterial = air; // Kr20CO2; // XeCO2CF4;
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fWorldMaterial = air;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* F03DetectorConstruction::ConstructCalorimeter()
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{
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// Cleanup old geometry
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if (fPhysiWorld) {
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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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}
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// complete the Calor parameters definition and Print
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ComputeCalorParameters();
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PrintCalorParameters();
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G4bool checkOverlaps = true;
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fSolidWorld = new G4Tubs("World", // its name
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0., fWorldSizeR, fWorldSizeZ / 2., 0., twopi); // its size
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fLogicWorld = new G4LogicalVolume(fSolidWorld, // its solid
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fWorldMaterial, // its material
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"World"); // its name
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fPhysiWorld = new G4PVPlacement(nullptr, // no rotation
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G4ThreeVector(), // at (0,0,0)
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"World", // its name
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fLogicWorld, // its logical volume
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nullptr, // its mother volume
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false, // no boolean op.
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0, // copy number
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checkOverlaps); // checkOverlaps
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// TR radiator envelope
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G4double radThick = fFoilNumber * (fRadThickness + fGasGap) + fDetGap;
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G4double zRad = fZAbsorber - 0.5 * (radThick + fAbsorberThickness);
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G4cout << "zRad = " << zRad / mm << " mm" << G4endl;
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G4cout << "radThick = " << radThick / mm << " mm" << G4endl;
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G4cout << "fFoilNumber = " << fFoilNumber << G4endl;
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G4cout << "fRadiatorMat = " << fRadiatorMat->GetName() << G4endl;
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G4cout << "WorldMaterial = " << fWorldMaterial->GetName() << G4endl;
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fSolidRadiator = new G4Tubs("Radiator", 0.0, fAbsorberRadius, 0.5 * radThick, 0.0, twopi);
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fLogicRadiator = new G4LogicalVolume(fSolidRadiator, fWorldMaterial, "Radiator");
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fPhysiRadiator = new G4PVPlacement(nullptr, G4ThreeVector(0, 0, zRad), "Radiator", fLogicRadiator,
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fPhysiWorld, false, 0, checkOverlaps);
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fSolidRadSlice = new G4Tubs("RadSlice", 0.0, fAbsorberRadius, 0.5 * fRadThickness, 0.0, twopi);
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fLogicRadSlice = new G4LogicalVolume(fSolidRadSlice, fRadiatorMat, "RadSlice");
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// Radiator slice
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G4double radSliceThick = fRadThickness + fGasGap;
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G4double zStart = 0.5 * (-radThick + radSliceThick) + fDetGap;
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// start on the board of radiator enevelope + det gap
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for (G4int j = 0; j < fFoilNumber; j++) {
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G4double zSlice = zStart + j * radSliceThick;
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G4cout << zSlice / mm << " mm"
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<< "\t";
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fPhysiRadSlice = new G4PVPlacement(nullptr, G4ThreeVector(0., 0., zSlice), "RadSlice",
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fLogicRadSlice, fPhysiRadiator, false, j, checkOverlaps);
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}
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G4cout << G4endl;
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// Absorber
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fSolidAbsorber =
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new G4Tubs("Absorber", 1.0 * mm, fAbsorberRadius, fAbsorberThickness / 2., 0.0, twopi);
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fLogicAbsorber = new G4LogicalVolume(fSolidAbsorber, fAbsorberMaterial, "Absorber");
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fPhysiAbsorber = new G4PVPlacement(nullptr, G4ThreeVector(0., 0., fZAbsorber), "Absorber",
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fLogicAbsorber, fPhysiWorld, false, 0, checkOverlaps);
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return fPhysiWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::PrintCalorParameters()
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{
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G4cout << "\n The WORLD is made of " << fWorldSizeZ / mm << "mm of "
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<< fWorldMaterial->GetName();
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G4cout << ", the transverse size (R) of the world is " << fWorldSizeR / mm << " mm. " << G4endl;
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G4cout << " The ABSORBER is made of " << fAbsorberThickness / mm << "mm of "
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<< fAbsorberMaterial->GetName();
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G4cout << ", the transverse size (R) is " << fAbsorberRadius / mm << " mm. " << G4endl;
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G4cout << " Z position of the (middle of the) absorber " << fZAbsorber / mm << " mm." << G4endl;
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G4cout << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetAbsorberMaterial(G4String materialChoice)
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{
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// get the pointer to the material table
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const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
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// search the material by its name
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G4Material* material;
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for (size_t j = 0; j < theMaterialTable->size(); j++) {
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material = (*theMaterialTable)[j];
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if (material->GetName() == materialChoice) {
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fAbsorberMaterial = material;
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fLogicAbsorber->SetMaterial(material);
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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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 F03DetectorConstruction::SetWorldMaterial(G4String materialChoice)
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{
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// get the pointer to the material table
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const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
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// search the material by its name
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G4Material* material;
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for (size_t j = 0; j < theMaterialTable->size(); j++) {
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material = (*theMaterialTable)[j];
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if (material->GetName() == materialChoice) {
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fWorldMaterial = material;
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fLogicWorld->SetMaterial(material);
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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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 F03DetectorConstruction::SetAbsorberThickness(G4double val)
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{
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// change Absorber thickness and recompute the calorimeter parameters
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fAbsorberThickness = val;
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ComputeCalorParameters();
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetAbsorberRadius(G4double val)
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{
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// change the transverse size and recompute the calorimeter parameters
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fAbsorberRadius = val;
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ComputeCalorParameters();
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetWorldSizeZ(G4double val)
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{
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fWorldSizeZ = val;
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ComputeCalorParameters();
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetWorldSizeR(G4double val)
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{
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fWorldSizeR = val;
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ComputeCalorParameters();
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetAbsorberZpos(G4double val)
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{
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fZAbsorber = val;
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ComputeCalorParameters();
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetFieldValue(G4ThreeVector value)
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{
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fFieldVector = value;
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G4UniformMagField* magField = nullptr;
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if (fFieldVector != G4ThreeVector(0.,0.,0.)) {
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magField = new G4UniformMagField(fFieldVector);
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}
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// Set field to the field builder
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auto fieldBuilder = G4FieldBuilder::Instance();
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fieldBuilder->SetGlobalField(magField);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::SetLocalFieldValue(G4ThreeVector value)
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{
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fLocalFieldVector = value;
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G4UniformMagField* magField = nullptr;
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if (fLocalFieldVector != G4ThreeVector(0.,0.,0.)) {
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magField = new G4UniformMagField(fLocalFieldVector);
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}
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// Set field to the field builder
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auto fieldBuilder = G4FieldBuilder::Instance();
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fieldBuilder->SetLocalField(magField, fLogicRadiator);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void F03DetectorConstruction::ConstructSDandField()
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{
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// Sensitive Detectors: Absorber
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if (!fCalorimeterSD.Get()) {
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auto calorimeterSD = new F03CalorimeterSD("CalorSD", this);
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fCalorimeterSD.Put(calorimeterSD);
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}
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G4SDManager::GetSDMpointer()->AddNewDetector(fCalorimeterSD.Get());
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SetSensitiveDetector(fLogicAbsorber, fCalorimeterSD.Get());
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// Create detector fields
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SetFieldValue(fFieldVector);
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SetLocalFieldValue(fLocalFieldVector);
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// Construct all Geant4 field objects
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auto fieldBuilder = G4FieldBuilder::Instance();
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fieldBuilder->ConstructFieldSetup();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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