[807] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // Code developed by: |
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| 27 | // S.Larsson |
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| 28 | // |
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| 29 | // ***************************************** |
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| 30 | // * * |
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| 31 | // * PurgMagDetectorConstruction.cc * |
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| 32 | // * * |
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| 33 | // ***************************************** |
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| 34 | // |
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| 35 | // $Id: PurgMagDetectorConstruction.cc,v 1.4 2006/06/29 16:06:11 gunter Exp $ |
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[1230] | 36 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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[807] | 37 | // |
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| 38 | #include "PurgMagDetectorConstruction.hh" |
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| 39 | #include "PurgMagTabulatedField3D.hh" |
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| 40 | #include "G4ThreeVector.hh" |
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| 41 | #include "globals.hh" |
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| 42 | #include "G4Material.hh" |
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| 43 | #include "G4Box.hh" |
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| 44 | #include "G4Trd.hh" |
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| 45 | #include "G4Tubs.hh" |
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| 46 | #include "G4LogicalVolume.hh" |
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| 47 | #include "G4PVPlacement.hh" |
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| 48 | #include "G4PVReplica.hh" |
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| 49 | #include "G4PVParameterised.hh" |
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| 50 | #include "G4Mag_UsualEqRhs.hh" |
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| 51 | #include "G4FieldManager.hh" |
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| 52 | #include "G4TransportationManager.hh" |
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| 53 | #include "G4EqMagElectricField.hh" |
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| 54 | |
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| 55 | #include "G4ChordFinder.hh" |
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| 56 | #include "G4UniformMagField.hh" |
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| 57 | #include "G4ExplicitEuler.hh" |
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| 58 | #include "G4ImplicitEuler.hh" |
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| 59 | #include "G4SimpleRunge.hh" |
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| 60 | #include "G4SimpleHeum.hh" |
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| 61 | #include "G4ClassicalRK4.hh" |
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| 62 | #include "G4HelixExplicitEuler.hh" |
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| 63 | #include "G4HelixImplicitEuler.hh" |
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| 64 | #include "G4HelixSimpleRunge.hh" |
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| 65 | #include "G4CashKarpRKF45.hh" |
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| 66 | #include "G4RKG3_Stepper.hh" |
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| 67 | |
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| 68 | #include "G4VisAttributes.hh" |
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| 69 | #include "G4Colour.hh" |
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| 70 | #include "G4UnitsTable.hh" |
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| 71 | #include "G4ios.hh" |
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| 72 | |
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| 73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 74 | // Possibility to turn off (0) magnetic field and measurement volume. |
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| 75 | #define GAP 1 // Magnet geometric volume |
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| 76 | #define MAG 1 // Magnetic field grid |
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| 77 | #define MEASUREVOL 1 // Volume for measurement |
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| 78 | |
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| 79 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 80 | |
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| 81 | PurgMagDetectorConstruction::PurgMagDetectorConstruction() |
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| 82 | |
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| 83 | :physiWorld(NULL), logicWorld(NULL), solidWorld(NULL), |
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| 84 | physiGap1(NULL), logicGap1(NULL), solidGap1(NULL), |
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| 85 | physiGap2(NULL), logicGap2(NULL), solidGap2(NULL), |
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| 86 | physiMeasureVolume(NULL), logicMeasureVolume(NULL), solidMeasureVolume(NULL), |
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| 87 | WorldMaterial(NULL), |
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| 88 | GapMaterial(NULL) |
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| 89 | |
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| 90 | { |
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| 91 | WorldSizeXY=WorldSizeZ=0; |
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| 92 | GapSizeX1=GapSizeX2=GapSizeY1=GapSizeY2=GapSizeZ=0; |
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| 93 | MeasureVolumeSizeXY=MeasureVolumeSizeZ=0; |
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| 94 | } |
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| 95 | |
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| 96 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 97 | |
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| 98 | PurgMagDetectorConstruction::~PurgMagDetectorConstruction() |
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| 99 | {} |
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| 100 | |
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| 101 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 102 | |
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| 103 | G4VPhysicalVolume* PurgMagDetectorConstruction::Construct() |
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| 104 | |
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| 105 | { |
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| 106 | DefineMaterials(); |
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| 107 | return ConstructCalorimeter(); |
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| 108 | } |
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| 109 | |
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| 110 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 111 | |
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| 112 | void PurgMagDetectorConstruction::DefineMaterials() |
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| 113 | { |
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| 114 | //This function illustrates the possible ways to define materials. |
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| 115 | //Density and mass per mole taken from Physics Handbook for Science |
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| 116 | //and engineering, sixth edition. This is a general material list |
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| 117 | //with extra materials for other examples. |
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| 118 | |
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| 119 | G4String name, symbol; |
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| 120 | G4double density; |
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| 121 | |
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| 122 | G4int ncomponents, natoms; |
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| 123 | G4double fractionmass; |
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| 124 | G4double temperature, pressure; |
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| 125 | |
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| 126 | // Define Elements |
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| 127 | // Example: G4Element* Notation = new G4Element ("Element", "Notation", z, a); |
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| 128 | G4Element* H = new G4Element ("Hydrogen", "H", 1. , 1.01*g/mole); |
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| 129 | G4Element* N = new G4Element ("Nitrogen", "N", 7., 14.01*g/mole); |
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| 130 | G4Element* O = new G4Element ("Oxygen" , "O", 8. , 16.00*g/mole); |
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| 131 | G4Element* Ar = new G4Element ("Argon" , "Ar", 18., 39.948*g/mole ); |
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| 132 | |
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| 133 | |
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| 134 | // Define Material |
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| 135 | // Example: G4Material* Notation = new G4Material("Material", z, a, density); |
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| 136 | /* Not used in this setup, will be used in further development. |
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| 137 | G4Material* He = new G4Material("Helium", 2., 4.00*g/mole, 0.178*mg/cm3); |
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| 138 | G4Material* Be = new G4Material("Beryllium", 4., 9.01*g/mole, 1.848*g/cm3); |
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| 139 | G4Material* W = new G4Material("Tungsten", 74., 183.85*g/mole, 19.30*g/cm3); |
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| 140 | G4Material* Cu = new G4Material("Copper", 29., 63.55*g/mole, 8.96*g/cm3); |
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| 141 | */ |
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| 142 | G4Material* Fe = new G4Material("Iron", 26., 55.84*g/mole, 7.87*g/cm3); |
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| 143 | |
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| 144 | // Define materials from elements. |
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| 145 | |
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| 146 | // Case 1: chemical molecule |
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| 147 | // Water |
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| 148 | density = 1.000*g/cm3; |
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| 149 | G4Material* H2O = new G4Material(name="H2O" , density, ncomponents=2); |
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| 150 | H2O->AddElement(H, natoms=2); |
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| 151 | H2O->AddElement(O, natoms=1); |
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| 152 | |
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| 153 | // Case 2: mixture by fractional mass. |
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| 154 | // Air |
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| 155 | density = 1.290*mg/cm3; |
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| 156 | G4Material* Air = new G4Material(name="Air" , density, ncomponents=2); |
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| 157 | Air->AddElement(N, fractionmass=0.7); |
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| 158 | Air->AddElement(O, fractionmass=0.3); |
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| 159 | |
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| 160 | // Vacuum |
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| 161 | density = 1.e-5*g/cm3; |
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| 162 | pressure = 2.e-2*bar; |
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| 163 | temperature = STP_Temperature; //from PhysicalConstants.h |
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| 164 | G4Material* vacuum = new G4Material(name="vacuum", density, ncomponents=1, |
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| 165 | kStateGas,temperature,pressure); |
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| 166 | vacuum->AddMaterial(Air, fractionmass=1.); |
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| 167 | |
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| 168 | |
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| 169 | // Laboratory vacuum: Dry air (average composition) |
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| 170 | density = 1.7836*mg/cm3 ; // STP |
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| 171 | G4Material* Argon = new G4Material(name="Argon", density, ncomponents=1); |
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| 172 | Argon->AddElement(Ar, 1); |
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| 173 | |
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| 174 | density = 1.25053*mg/cm3 ; // STP |
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| 175 | G4Material* Nitrogen = new G4Material(name="N2", density, ncomponents=1); |
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| 176 | Nitrogen->AddElement(N, 2); |
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| 177 | |
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| 178 | density = 1.4289*mg/cm3 ; // STP |
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| 179 | G4Material* Oxygen = new G4Material(name="O2", density, ncomponents=1); |
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| 180 | Oxygen->AddElement(O, 2); |
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| 181 | |
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| 182 | |
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| 183 | density = 1.2928*mg/cm3 ; // STP |
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| 184 | density *= 1.0e-8 ; // pumped vacuum |
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| 185 | |
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| 186 | temperature = STP_Temperature; |
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| 187 | pressure = 1.0e-8*STP_Pressure; |
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| 188 | |
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| 189 | G4Material* LaboratoryVacuum = new G4Material(name="LaboratoryVacuum", |
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| 190 | density,ncomponents=3, |
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| 191 | kStateGas,temperature,pressure); |
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| 192 | LaboratoryVacuum->AddMaterial( Nitrogen, fractionmass = 0.7557 ) ; |
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| 193 | LaboratoryVacuum->AddMaterial( Oxygen, fractionmass = 0.2315 ) ; |
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| 194 | LaboratoryVacuum->AddMaterial( Argon, fractionmass = 0.0128 ) ; |
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| 195 | |
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| 196 | |
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| 197 | G4cout << G4endl << *(G4Material::GetMaterialTable()) << G4endl; |
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| 198 | |
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| 199 | |
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| 200 | // Default materials in setup. |
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| 201 | WorldMaterial = LaboratoryVacuum; |
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| 202 | GapMaterial = Fe; |
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| 203 | |
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| 204 | |
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| 205 | G4cout << "end material"<< endl; |
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| 206 | } |
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| 207 | |
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| 208 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 209 | G4VPhysicalVolume* PurgMagDetectorConstruction::ConstructCalorimeter() |
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| 210 | { |
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| 211 | // Complete the parameters definition |
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| 212 | |
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| 213 | //The World |
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| 214 | WorldSizeXY = 300.*cm; // Cube |
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| 215 | WorldSizeZ = 300.*cm; |
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| 216 | |
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| 217 | //Measurement volume |
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| 218 | MeasureVolumeSizeXY = 280.*cm; // Cubic slice |
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| 219 | MeasureVolumeSizeZ = 1.*cm; |
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| 220 | |
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| 221 | // Position of measurement volume. |
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| 222 | // SSD is Source to Surface Distance. Source in origo and measurements 50 cm |
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| 223 | // below in the z-direction (symbolizin a patient at SSD = 50 cm) |
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| 224 | |
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| 225 | SSD = 50.*cm; |
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| 226 | MeasureVolumePosition = -(SSD + MeasureVolumeSizeZ/2); |
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| 227 | |
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| 228 | |
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| 229 | // Geometric definition of the gap of the purging magnet. Approximation of |
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| 230 | // the shape of the pole gap. |
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| 231 | |
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| 232 | GapSizeY1 = 10.*cm; // length along x at the surface positioned at -dz |
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| 233 | GapSizeY2 = 10.*cm; // length along x at the surface positioned at +dz |
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| 234 | GapSizeX1 = 10.*cm; // length along y at the surface positioned at -dz |
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| 235 | GapSizeX2 = 18.37*cm; // length along y at the surface positioned at +dz |
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| 236 | GapSizeZ = 11.5*cm; // length along z axis |
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| 237 | |
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| 238 | Gap1PosY = 0.*cm; |
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| 239 | Gap1PosX = -9.55*cm; |
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| 240 | Gap1PosZ = -6.89*cm; |
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| 241 | |
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| 242 | Gap2PosY = 0.*cm; |
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| 243 | Gap2PosX = 9.55*cm; |
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| 244 | Gap2PosZ = -6.89*cm; |
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| 245 | |
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| 246 | |
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| 247 | // Coordinate correction for field grif. |
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| 248 | // Gap opening at z = -11.4 mm. |
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| 249 | // In field grid coordonates gap at z = -0.007m in field from z = 0.0m to |
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| 250 | // z = 0.087m. |
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| 251 | // -> zOffset = -11.4-(-7) = 4.4 mm |
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| 252 | |
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| 253 | zOffset = 4.4*mm; |
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| 254 | |
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| 255 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 256 | // |
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| 257 | // Magnetic Field - Purging magnet |
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| 258 | // |
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| 259 | #if MAG |
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| 260 | |
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| 261 | static G4bool fieldIsInitialized = false; |
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| 262 | if(!fieldIsInitialized) |
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| 263 | { |
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| 264 | G4FieldManager *pFieldMgr; |
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| 265 | // G4MagIntegratorStepper *pStepper; |
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| 266 | |
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| 267 | //Field grid in A9.TABLE. File must be in accessible from run urn directory. |
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| 268 | G4MagneticField* PurgMagField= new PurgMagTabulatedField3D("PurgMag3D.TABLE", zOffset); |
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| 269 | |
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| 270 | pFieldMgr=G4TransportationManager::GetTransportationManager()->GetFieldManager(); |
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| 271 | |
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| 272 | G4cout<< "DeltaStep "<<pFieldMgr->GetDeltaOneStep()/mm <<"mm" <<endl; |
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| 273 | |
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| 274 | G4ChordFinder *pChordFinder = new G4ChordFinder(PurgMagField); |
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| 275 | pFieldMgr->SetChordFinder( pChordFinder ); |
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| 276 | |
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| 277 | pFieldMgr->SetDetectorField(PurgMagField); |
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| 278 | |
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| 279 | fieldIsInitialized = true; |
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| 280 | } |
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| 281 | #endif |
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| 282 | |
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| 283 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 284 | |
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| 285 | // Some out prints of the setup. |
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| 286 | |
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| 287 | G4cout << "\n-----------------------------------------------------------" |
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| 288 | << "\n Geometry and materials" |
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| 289 | << "\n-----------------------------------------------------------" |
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| 290 | << "\n ---> World:" |
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| 291 | << "\n ---> " << WorldMaterial->GetName() << " in World" |
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| 292 | << "\n ---> " << "WorldSizeXY: " << G4BestUnit(WorldSizeXY,"Length") |
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| 293 | << "\n ---> " << "WorldSizeZ: " << G4BestUnit(WorldSizeZ,"Length"); |
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| 294 | |
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| 295 | #if GAP |
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| 296 | G4cout << "\n-----------------------------------------------------------" |
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| 297 | << "\n ---> Purging Magnet:" |
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| 298 | << "\n ---> " << "Gap made of "<< GapMaterial->GetName() |
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| 299 | << "\n ---> " << "GapSizeY1: " << G4BestUnit(GapSizeY1,"Length") |
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| 300 | << "\n ---> " << "GapSizeY2: " << G4BestUnit(GapSizeY2,"Length") |
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| 301 | << "\n ---> " << "GapSizeX1: " << G4BestUnit(GapSizeX1,"Length") |
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| 302 | << "\n ---> " << "GapSizeX2: " << G4BestUnit(GapSizeX2,"Length"); |
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| 303 | #endif |
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| 304 | |
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| 305 | #if MEASUREVOL |
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| 306 | G4cout << "\n-----------------------------------------------------------" |
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| 307 | << "\n ---> Measurement Volume:" |
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| 308 | << "\n ---> " << WorldMaterial->GetName() << " in Measurement volume" |
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| 309 | << "\n ---> " << "MeasureVolumeXY: " << G4BestUnit(MeasureVolumeSizeXY,"Length") |
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| 310 | << "\n ---> " << "MeasureVolumeZ: " << G4BestUnit(MeasureVolumeSizeZ,"Length") |
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| 311 | << "\n ---> " << "At SSD = " << G4BestUnit(MeasureVolumePosition,"Length"); |
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| 312 | #endif |
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| 313 | |
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| 314 | G4cout << "\n-----------------------------------------------------------\n"; |
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| 315 | |
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| 316 | |
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| 317 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 318 | // |
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| 319 | // World |
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| 320 | // |
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| 321 | |
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| 322 | |
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| 323 | solidWorld = new G4Box("World", //its name |
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| 324 | WorldSizeXY/2,WorldSizeXY/2,WorldSizeZ/2); //its size |
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| 325 | |
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| 326 | |
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| 327 | logicWorld = new G4LogicalVolume(solidWorld, //its solid |
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| 328 | WorldMaterial, //its material |
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| 329 | "World"); //its name |
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| 330 | |
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| 331 | physiWorld = new G4PVPlacement(0, //no rotation |
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| 332 | G4ThreeVector(), //at (0,0,0) |
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| 333 | "World", //its name |
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| 334 | logicWorld, //its logical volume |
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| 335 | NULL, //its mother volume |
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| 336 | false, //no boolean operation |
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| 337 | 0); //copy number |
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| 338 | |
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| 339 | // Visualization attributes |
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| 340 | G4VisAttributes* simpleWorldVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); //White |
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| 341 | simpleWorldVisAtt->SetVisibility(true); |
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| 342 | logicWorld->SetVisAttributes(simpleWorldVisAtt); |
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| 343 | |
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| 344 | |
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| 345 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 346 | // |
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| 347 | // Measurement Volume |
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| 348 | // |
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| 349 | |
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| 350 | #if MEASUREVOL |
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| 351 | |
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| 352 | solidMeasureVolume = new G4Box("MeasureVolume", //its name |
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| 353 | MeasureVolumeSizeXY/2,MeasureVolumeSizeXY/2,MeasureVolumeSizeZ/2); //its size |
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| 354 | |
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| 355 | logicMeasureVolume = new G4LogicalVolume(solidMeasureVolume, //its solid |
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| 356 | WorldMaterial, //its material |
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| 357 | "MeasureVolume"); //its name |
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| 358 | |
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| 359 | physiMeasureVolume = new G4PVPlacement(0, //no rotation |
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| 360 | G4ThreeVector(0.,0.,MeasureVolumePosition), //at (0,0,0) |
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| 361 | "MeasureVolume", //its name |
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| 362 | logicMeasureVolume, //its logical volume |
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| 363 | physiWorld, //its mother volume |
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| 364 | false, //no boolean operation |
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| 365 | 0); //copy number |
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| 366 | |
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| 367 | // Visualization attributes |
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| 368 | G4VisAttributes* simpleMeasureVolumeVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); //White |
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| 369 | simpleMeasureVolumeVisAtt->SetVisibility(true); |
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| 370 | simpleMeasureVolumeVisAtt->SetForceSolid(true); |
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| 371 | logicMeasureVolume->SetVisAttributes(simpleMeasureVolumeVisAtt); |
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| 372 | |
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| 373 | #endif |
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| 374 | |
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| 375 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 376 | // |
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| 377 | //Gap cone. Opening 20 deg. Two separate trapezoids. Iron. |
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| 378 | // |
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| 379 | |
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| 380 | #if GAP |
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| 381 | |
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| 382 | //Gap part 1, placed in negative x-direction. |
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| 383 | |
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| 384 | solidGap1 = new G4Trd("Gap1", |
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| 385 | GapSizeX1/2, // Half-length along x at the surface positioned at -dz |
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| 386 | GapSizeX2/2, // Half-length along x at the surface positioned at +dz |
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| 387 | GapSizeY1/2, // Half-length along y at the surface positioned at -dz |
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| 388 | GapSizeY2/2, // Half-length along y at the surface positioned at +dz |
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| 389 | GapSizeZ/2 ); // Half-length along z axis |
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| 390 | |
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| 391 | logicGap1 = new G4LogicalVolume(solidGap1, //its solid |
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| 392 | GapMaterial, //its material |
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| 393 | "Gap1"); //its name |
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| 394 | |
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| 395 | physiGap1 = new G4PVPlacement(0, //90 deg rotation |
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| 396 | G4ThreeVector(Gap1PosX,Gap1PosY,Gap1PosZ), //position |
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| 397 | "Gap1", //its name |
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| 398 | logicGap1, //its logical volume |
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| 399 | physiWorld, //its mother volume |
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| 400 | false, //no boolean operation |
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| 401 | 0); //copy number |
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| 402 | |
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| 403 | //Gap part 2, placed in positive x-direction. |
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| 404 | |
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| 405 | solidGap2 = new G4Trd("Gap2", |
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| 406 | GapSizeX1/2, // Half-length along x at the surface positioned at -dz |
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| 407 | GapSizeX2/2, // Half-length along x at the surface positioned at +dz |
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| 408 | GapSizeY1/2, // Half-length along y at the surface positioned at -dz |
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| 409 | GapSizeY2/2, // Half-length along y at the surface positioned at +dz |
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| 410 | GapSizeZ/2 ); // Half-length along z axis |
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| 411 | |
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| 412 | logicGap2 = new G4LogicalVolume(solidGap2, //its solid |
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| 413 | GapMaterial, //its material |
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| 414 | "Gap2"); //its name |
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| 415 | |
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| 416 | physiGap2 = new G4PVPlacement(0, //no rotation |
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| 417 | G4ThreeVector(Gap2PosX,Gap2PosY,Gap2PosZ), //position |
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| 418 | "Gap2", //its name |
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| 419 | logicGap2, //its logical volume |
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| 420 | physiWorld, //its mother volume |
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| 421 | false, //no boolean operation |
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| 422 | 0); //copy number |
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| 423 | |
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| 424 | // Visualization attributes |
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| 425 | G4VisAttributes* simpleGap1VisAtt= new G4VisAttributes(G4Colour(0.0,0.0,1.0)); //yellow |
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| 426 | simpleGap1VisAtt->SetVisibility(true); |
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| 427 | simpleGap1VisAtt->SetForceSolid(true); |
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| 428 | logicGap1->SetVisAttributes(simpleGap1VisAtt); |
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| 429 | |
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| 430 | G4VisAttributes* simpleGap2VisAtt= new G4VisAttributes(G4Colour(0.0,0.0,1.0)); //yellow |
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| 431 | simpleGap2VisAtt->SetVisibility(true); |
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| 432 | simpleGap2VisAtt->SetForceSolid(true); |
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| 433 | logicGap2->SetVisAttributes(simpleGap2VisAtt); |
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| 434 | |
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| 435 | #endif |
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| 436 | |
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| 437 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 438 | |
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| 439 | return physiWorld; |
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| 440 | } |
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| 441 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 442 | |
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| 443 | |
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