Import Geant4 11.0.0 source tree
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Gabriele Cosmo
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Ben Morgan
Ben Morgan
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//
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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 DetectorConstruction.cc
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/// \brief Implementation of the DetectorConstruction class
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#include "DetectorConstruction.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 "G4LogicalVolume.hh"
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#include "G4PVPlacement.hh"
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#include "G4PVReplica.hh"
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#include "G4GlobalMagFieldMessenger.hh"
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#include "G4AutoDelete.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 "G4VisAttributes.hh"
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#include "G4Colour.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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namespace B4
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{
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4ThreadLocal
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G4GlobalMagFieldMessenger* DetectorConstruction::fMagFieldMessenger = nullptr;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::DetectorConstruction()
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{
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::~DetectorConstruction()
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{
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::Construct()
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{
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// Define materials
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DefineMaterials();
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// Define volumes
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return DefineVolumes();
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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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// Lead material defined using NIST Manager
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auto nistManager = G4NistManager::Instance();
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nistManager->FindOrBuildMaterial("G4_Pb");
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// Liquid argon material
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G4double a; // mass of a mole;
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G4double z; // z=mean number of protons;
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G4double density;
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new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3);
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// The argon by NIST Manager is a gas with a different density
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// Vacuum
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new G4Material("Galactic", z=1., a=1.01*g/mole,density= universe_mean_density,
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kStateGas, 2.73*kelvin, 3.e-18*pascal);
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// Print materials
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::DefineVolumes()
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{
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// Geometry parameters
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G4int nofLayers = 10;
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G4double absoThickness = 10.*mm;
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G4double gapThickness = 5.*mm;
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G4double calorSizeXY = 10.*cm;
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auto layerThickness = absoThickness + gapThickness;
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auto calorThickness = nofLayers * layerThickness;
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auto worldSizeXY = 1.2 * calorSizeXY;
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auto worldSizeZ = 1.2 * calorThickness;
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// Get materials
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auto defaultMaterial = G4Material::GetMaterial("Galactic");
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auto absorberMaterial = G4Material::GetMaterial("G4_Pb");
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auto gapMaterial = G4Material::GetMaterial("liquidArgon");
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if ( ! defaultMaterial || ! absorberMaterial || ! gapMaterial ) {
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G4ExceptionDescription msg;
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msg << "Cannot retrieve materials already defined.";
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G4Exception("DetectorConstruction::DefineVolumes()",
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"MyCode0001", FatalException, msg);
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}
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//
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// World
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//
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auto worldS
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= new G4Box("World", // its name
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worldSizeXY/2, worldSizeXY/2, worldSizeZ/2); // its size
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auto worldLV
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= new G4LogicalVolume(
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worldS, // its solid
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defaultMaterial, // its material
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"World"); // its name
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auto worldPV
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= new G4PVPlacement(
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0, // no rotation
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G4ThreeVector(), // at (0,0,0)
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worldLV, // its logical volume
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"World", // its name
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0, // its mother volume
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false, // no boolean operation
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0, // copy number
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fCheckOverlaps); // checking overlaps
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//
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// Calorimeter
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//
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auto calorimeterS
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= new G4Box("Calorimeter", // its name
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calorSizeXY/2, calorSizeXY/2, calorThickness/2); // its size
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auto calorLV
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= new G4LogicalVolume(
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calorimeterS, // its solid
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defaultMaterial, // its material
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"Calorimeter"); // its name
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new G4PVPlacement(
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0, // no rotation
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G4ThreeVector(), // at (0,0,0)
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calorLV, // its logical volume
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"Calorimeter", // its name
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worldLV, // its mother volume
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false, // no boolean operation
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0, // copy number
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fCheckOverlaps); // checking overlaps
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//
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// Layer
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//
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auto layerS
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= new G4Box("Layer", // its name
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calorSizeXY/2, calorSizeXY/2, layerThickness/2); // its size
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auto layerLV
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= new G4LogicalVolume(
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layerS, // its solid
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defaultMaterial, // its material
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"Layer"); // its name
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new G4PVReplica(
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"Layer", // its name
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layerLV, // its logical volume
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calorLV, // its mother
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kZAxis, // axis of replication
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nofLayers, // number of replica
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layerThickness); // witdth of replica
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//
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// Absorber
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//
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auto absorberS
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= new G4Box("Abso", // its name
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calorSizeXY/2, calorSizeXY/2, absoThickness/2); // its size
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auto absorberLV
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= new G4LogicalVolume(
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absorberS, // its solid
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absorberMaterial, // its material
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"Abso"); // its name
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fAbsorberPV
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= new G4PVPlacement(
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0, // no rotation
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G4ThreeVector(0., 0., -gapThickness/2), // its position
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absorberLV, // its logical volume
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"Abso", // its name
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layerLV, // its mother volume
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false, // no boolean operation
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0, // copy number
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fCheckOverlaps); // checking overlaps
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//
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// Gap
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//
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auto gapS
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= new G4Box("Gap", // its name
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calorSizeXY/2, calorSizeXY/2, gapThickness/2); // its size
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auto gapLV
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= new G4LogicalVolume(
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gapS, // its solid
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gapMaterial, // its material
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"Gap"); // its name
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fGapPV
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= new G4PVPlacement(
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0, // no rotation
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G4ThreeVector(0., 0., absoThickness/2), // its position
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gapLV, // its logical volume
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"Gap", // its name
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layerLV, // its mother volume
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false, // no boolean operation
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0, // copy number
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fCheckOverlaps); // checking overlaps
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//
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// print parameters
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//
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G4cout
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<< G4endl
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<< "------------------------------------------------------------" << G4endl
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<< "---> The calorimeter is " << nofLayers << " layers of: [ "
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<< absoThickness/mm << "mm of " << absorberMaterial->GetName()
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<< " + "
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<< gapThickness/mm << "mm of " << gapMaterial->GetName() << " ] " << G4endl
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<< "------------------------------------------------------------" << G4endl;
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//
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// Visualization attributes
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//
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worldLV->SetVisAttributes (G4VisAttributes::GetInvisible());
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auto simpleBoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0));
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simpleBoxVisAtt->SetVisibility(true);
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calorLV->SetVisAttributes(simpleBoxVisAtt);
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//
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// Always return the physical World
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//
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return worldPV;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::ConstructSDandField()
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{
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// Create global magnetic field messenger.
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// Uniform magnetic field is then created automatically if
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// the field value is not zero.
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G4ThreeVector fieldValue;
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fMagFieldMessenger = new G4GlobalMagFieldMessenger(fieldValue);
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fMagFieldMessenger->SetVerboseLevel(1);
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// Register the field messenger for deleting
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G4AutoDelete::Register(fMagFieldMessenger);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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}
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