[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 | #include "LXeDetectorConstruction.hh" |
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| 27 | #include "LXePMTSD.hh" |
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| 28 | #include "LXeScintSD.hh" |
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| 29 | #include "LXeDetectorMessenger.hh" |
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| 30 | #include "LXeMainVolume.hh" |
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| 31 | #include "LXeWLSSlab.hh" |
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| 32 | |
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| 33 | #include "G4SDManager.hh" |
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| 34 | #include "G4RunManager.hh" |
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| 35 | #include "G4LogicalBorderSurface.hh" |
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| 36 | #include "G4LogicalSkinSurface.hh" |
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| 37 | #include "G4OpticalSurface.hh" |
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| 38 | #include "G4MaterialTable.hh" |
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| 39 | #include "G4VisAttributes.hh" |
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| 40 | #include "G4Material.hh" |
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| 41 | #include "G4Box.hh" |
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| 42 | #include "G4Tubs.hh" |
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| 43 | #include "G4Sphere.hh" |
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| 44 | #include "G4LogicalVolume.hh" |
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| 45 | #include "G4ThreeVector.hh" |
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| 46 | #include "G4PVPlacement.hh" |
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| 47 | #include "globals.hh" |
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| 48 | #include "G4SolidStore.hh" |
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| 49 | #include "G4LogicalVolumeStore.hh" |
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| 50 | #include "G4PhysicalVolumeStore.hh" |
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| 51 | #include "G4GeometryManager.hh" |
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| 52 | #include "G4UImanager.hh" |
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| 53 | |
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| 54 | G4bool LXeDetectorConstruction::sphereOn = true; |
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| 55 | |
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| 56 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 57 | LXeDetectorConstruction::LXeDetectorConstruction() |
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| 58 | : LXe_mt(NULL), MPTPStyrene(NULL) |
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| 59 | { |
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| 60 | SetDefaults(); |
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| 61 | detectorMessenger = new LXeDetectorMessenger(this); |
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| 62 | } |
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| 63 | |
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| 64 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 65 | LXeDetectorConstruction::~LXeDetectorConstruction(){ |
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| 66 | } |
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| 67 | |
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| 68 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 69 | void LXeDetectorConstruction::DefineMaterials(){ |
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| 70 | G4double a; // atomic mass |
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| 71 | G4double z; // atomic number |
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| 72 | G4double density; |
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| 73 | |
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| 74 | G4int polyPMMA = 1; |
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| 75 | G4int nC_PMMA = 3+2*polyPMMA; |
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| 76 | G4int nH_PMMA = 6+2*polyPMMA; |
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| 77 | |
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| 78 | G4int polyeth = 1; |
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| 79 | G4int nC_eth = 2*polyeth; |
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| 80 | G4int nH_eth = 4*polyeth; |
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| 81 | |
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| 82 | //***Elements |
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| 83 | H = new G4Element("H", "H", z=1., a=1.01*g/mole); |
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| 84 | C = new G4Element("C", "C", z=6., a=12.01*g/mole); |
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| 85 | N = new G4Element("N", "N", z=7., a= 14.01*g/mole); |
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| 86 | O = new G4Element("O" , "O", z=8., a= 16.00*g/mole); |
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| 87 | |
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| 88 | //***Materials |
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| 89 | //Liquid Xenon |
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| 90 | LXe = new G4Material("LXe",z=54.,a=131.29*g/mole,density=3.020*g/cm3); |
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| 91 | //Aluminum |
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| 92 | Al = new G4Material("Al",z=13.,a=26.98*g/mole,density=2.7*g/cm3); |
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| 93 | //Vacuum |
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| 94 | Vacuum = new G4Material("Vacuum",z=1.,a=1.01*g/mole, |
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| 95 | density=universe_mean_density,kStateGas,0.1*kelvin, |
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| 96 | 1.e-19*pascal); |
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| 97 | //Air |
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| 98 | Air = new G4Material("Air", density= 1.29*mg/cm3, 2); |
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| 99 | Air->AddElement(N, 70*perCent); |
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| 100 | Air->AddElement(O, 30*perCent); |
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| 101 | //Glass |
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| 102 | Glass = new G4Material("Glass", density=1.032*g/cm3,2); |
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| 103 | Glass->AddElement(C,91.533*perCent); |
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| 104 | Glass->AddElement(H,8.467*perCent); |
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| 105 | //Polystyrene |
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| 106 | Pstyrene = new G4Material("Polystyrene", density= 1.03*g/cm3, 2); |
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| 107 | Pstyrene->AddElement(C, 8); |
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| 108 | Pstyrene->AddElement(H, 8); |
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| 109 | //Fiber(PMMA) |
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| 110 | PMMA = new G4Material("PMMA", density=1190*kg/m3,3); |
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| 111 | PMMA->AddElement(H,nH_PMMA); |
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| 112 | PMMA->AddElement(C,nC_PMMA); |
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| 113 | PMMA->AddElement(O,2); |
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| 114 | //Cladding(polyethylene) |
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| 115 | Pethylene = new G4Material("Pethylene", density=1200*kg/m3,2); |
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| 116 | Pethylene->AddElement(H,nH_eth); |
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| 117 | Pethylene->AddElement(C,nC_eth); |
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| 118 | //Double cladding(flourinated polyethylene) |
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| 119 | fPethylene = new G4Material("fPethylene", density=1400*kg/m3,2); |
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| 120 | fPethylene->AddElement(H,nH_eth); |
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| 121 | fPethylene->AddElement(C,nC_eth); |
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| 122 | |
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| 123 | //***Material properties tables |
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| 124 | |
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| 125 | const G4int LXe_NUMENTRIES = 3; |
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| 126 | G4double LXe_Energy[LXe_NUMENTRIES] = { 7.0*eV , 7.07*eV, 7.14*eV }; |
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| 127 | |
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| 128 | G4double LXe_SCINT[LXe_NUMENTRIES] = { 0.1, 1.0, 0.1 }; |
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| 129 | G4double LXe_RIND[LXe_NUMENTRIES] = { 1.59 , 1.57, 1.54 }; |
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| 130 | G4double LXe_ABSL[LXe_NUMENTRIES] = { 35.*cm, 35.*cm, 35.*cm}; |
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| 131 | LXe_mt = new G4MaterialPropertiesTable(); |
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| 132 | LXe_mt->AddProperty("FASTCOMPONENT", LXe_Energy, LXe_SCINT, LXe_NUMENTRIES); |
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| 133 | LXe_mt->AddProperty("SLOWCOMPONENT", LXe_Energy, LXe_SCINT, LXe_NUMENTRIES); |
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| 134 | LXe_mt->AddProperty("RINDEX", LXe_Energy, LXe_RIND, LXe_NUMENTRIES); |
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| 135 | LXe_mt->AddProperty("ABSLENGTH", LXe_Energy, LXe_ABSL, LXe_NUMENTRIES); |
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| 136 | LXe_mt->AddConstProperty("SCINTILLATIONYIELD",12000./MeV); |
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| 137 | LXe_mt->AddConstProperty("RESOLUTIONSCALE",1.0); |
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| 138 | LXe_mt->AddConstProperty("FASTTIMECONSTANT",20.*ns); |
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| 139 | LXe_mt->AddConstProperty("SLOWTIMECONSTANT",45.*ns); |
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| 140 | LXe_mt->AddConstProperty("YIELDRATIO",1.0); |
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| 141 | LXe->SetMaterialPropertiesTable(LXe_mt); |
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| 142 | |
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| 143 | G4double Glass_RIND[LXe_NUMENTRIES]={1.49,1.49,1.49}; |
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| 144 | G4double Glass_AbsLength[LXe_NUMENTRIES]={420.*cm,420.*cm,420.*cm}; |
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| 145 | G4MaterialPropertiesTable *Glass_mt = new G4MaterialPropertiesTable(); |
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| 146 | Glass_mt->AddProperty("ABSLENGTH",LXe_Energy,Glass_AbsLength,LXe_NUMENTRIES); |
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| 147 | Glass_mt->AddProperty("RINDEX",LXe_Energy,Glass_RIND,LXe_NUMENTRIES); |
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| 148 | Glass->SetMaterialPropertiesTable(Glass_mt); |
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| 149 | |
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| 150 | G4double Vacuum_Energy[LXe_NUMENTRIES]={2.0*eV,7.0*eV,7.14*eV}; |
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| 151 | G4double Vacuum_RIND[LXe_NUMENTRIES]={1.,1.,1.}; |
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| 152 | G4MaterialPropertiesTable *Vacuum_mt = new G4MaterialPropertiesTable(); |
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| 153 | Vacuum_mt->AddProperty("RINDEX", Vacuum_Energy, Vacuum_RIND,LXe_NUMENTRIES); |
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| 154 | Vacuum->SetMaterialPropertiesTable(Vacuum_mt); |
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| 155 | Air->SetMaterialPropertiesTable(Vacuum_mt);//Give air the same rindex |
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| 156 | |
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| 157 | const G4int WLS_NUMENTRIES = 4; |
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| 158 | G4double WLS_Energy[] = {2.00*eV,2.87*eV,2.90*eV,3.47*eV}; |
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| 159 | |
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| 160 | G4double RIndexPstyrene[WLS_NUMENTRIES]={ 1.5, 1.5, 1.5, 1.5}; |
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| 161 | G4double Absorption1[WLS_NUMENTRIES]={2.*cm, 2.*cm, 2.*cm, 2.*cm}; |
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| 162 | G4double ScintilFast[WLS_NUMENTRIES]={0.00, 0.00, 1.00, 1.00}; |
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| 163 | MPTPStyrene = new G4MaterialPropertiesTable(); |
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| 164 | MPTPStyrene->AddProperty("RINDEX",WLS_Energy,RIndexPstyrene,WLS_NUMENTRIES); |
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| 165 | MPTPStyrene->AddProperty("ABSLENGTH",WLS_Energy,Absorption1,WLS_NUMENTRIES); |
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| 166 | MPTPStyrene->AddProperty("FASTCOMPONENT",WLS_Energy, ScintilFast, |
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| 167 | WLS_NUMENTRIES); |
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| 168 | MPTPStyrene->AddConstProperty("SCINTILLATIONYIELD",10./keV); |
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| 169 | MPTPStyrene->AddConstProperty("RESOLUTIONSCALE",1.0); |
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| 170 | MPTPStyrene->AddConstProperty("FASTTIMECONSTANT", 10.*ns); |
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| 171 | Pstyrene->SetMaterialPropertiesTable(MPTPStyrene); |
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| 172 | |
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| 173 | G4double RefractiveIndexFiber[WLS_NUMENTRIES]={ 1.60, 1.60, 1.60, 1.60}; |
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| 174 | G4double AbsFiber[WLS_NUMENTRIES]={9.00*m,9.00*m,0.1*mm,0.1*mm}; |
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| 175 | G4double EmissionFib[WLS_NUMENTRIES]={1.0, 1.0, 0.0, 0.0}; |
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| 176 | G4MaterialPropertiesTable* MPTFiber = new G4MaterialPropertiesTable(); |
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| 177 | MPTFiber->AddProperty("RINDEX",WLS_Energy,RefractiveIndexFiber, |
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| 178 | WLS_NUMENTRIES); |
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| 179 | MPTFiber->AddProperty("WLSABSLENGTH",WLS_Energy,AbsFiber,WLS_NUMENTRIES); |
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| 180 | MPTFiber->AddProperty("WLSCOMPONENT",WLS_Energy,EmissionFib,WLS_NUMENTRIES); |
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| 181 | MPTFiber->AddConstProperty("WLSTIMECONSTANT", 0.5*ns); |
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| 182 | PMMA->SetMaterialPropertiesTable(MPTFiber); |
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| 183 | |
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| 184 | G4double RefractiveIndexClad1[WLS_NUMENTRIES]={ 1.49, 1.49, 1.49, 1.49}; |
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| 185 | G4MaterialPropertiesTable* MPTClad1 = new G4MaterialPropertiesTable(); |
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| 186 | MPTClad1->AddProperty("RINDEX",WLS_Energy,RefractiveIndexClad1, |
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| 187 | WLS_NUMENTRIES); |
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| 188 | MPTClad1->AddProperty("ABSLENGTH",WLS_Energy,AbsFiber,WLS_NUMENTRIES); |
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| 189 | Pethylene->SetMaterialPropertiesTable(MPTClad1); |
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| 190 | |
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| 191 | G4double RefractiveIndexClad2[WLS_NUMENTRIES]={ 1.42, 1.42, 1.42, 1.42}; |
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| 192 | G4MaterialPropertiesTable* MPTClad2 = new G4MaterialPropertiesTable(); |
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| 193 | MPTClad2->AddProperty("RINDEX",WLS_Energy,RefractiveIndexClad2, |
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| 194 | WLS_NUMENTRIES); |
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| 195 | MPTClad2->AddProperty("ABSLENGTH",WLS_Energy,AbsFiber,WLS_NUMENTRIES); |
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| 196 | fPethylene->SetMaterialPropertiesTable(MPTClad2); |
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| 197 | } |
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| 198 | |
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| 199 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 200 | G4VPhysicalVolume* LXeDetectorConstruction::Construct(){ |
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| 201 | DefineMaterials(); |
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| 202 | return ConstructDetector(); |
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| 203 | } |
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| 204 | |
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| 205 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 206 | G4VPhysicalVolume* LXeDetectorConstruction::ConstructDetector() |
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| 207 | { |
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| 208 | //The experimental hall walls are all 1m away from housing walls |
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| 209 | G4double expHall_x = scint_x+d_mtl+1.*m; |
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| 210 | G4double expHall_y = scint_y+d_mtl+1.*m; |
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| 211 | G4double expHall_z = scint_z+d_mtl+1.*m; |
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| 212 | |
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| 213 | //Create experimental hall |
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| 214 | experimentalHall_box |
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| 215 | = new G4Box("expHall_box",expHall_x,expHall_y,expHall_z); |
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| 216 | experimentalHall_log = new G4LogicalVolume(experimentalHall_box, |
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| 217 | Vacuum,"expHall_log",0,0,0); |
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| 218 | experimentalHall_phys = new G4PVPlacement(0,G4ThreeVector(), |
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| 219 | experimentalHall_log,"expHall",0,false,0); |
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| 220 | |
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| 221 | experimentalHall_log->SetVisAttributes(G4VisAttributes::Invisible); |
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| 222 | |
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| 223 | //Place the main volume |
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| 224 | if(mainVolume){ |
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| 225 | new LXeMainVolume(0,G4ThreeVector(),experimentalHall_log,false,0,this); |
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| 226 | } |
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| 227 | |
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| 228 | //Place the WLS slab |
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| 229 | if(WLSslab){ |
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| 230 | G4VPhysicalVolume* slab = new LXeWLSSlab(0,G4ThreeVector(0.,0., |
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| 231 | -scint_z/2.-slab_z-1.*cm), |
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| 232 | experimentalHall_log,false,0, |
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| 233 | this); |
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| 234 | |
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| 235 | //Surface properties for the WLS slab |
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| 236 | G4OpticalSurface* ScintWrap = new G4OpticalSurface("ScintWrap"); |
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| 237 | |
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| 238 | new G4LogicalBorderSurface("ScintWrap", slab, |
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| 239 | experimentalHall_phys, |
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| 240 | ScintWrap); |
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| 241 | |
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| 242 | ScintWrap->SetType(dielectric_metal); |
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| 243 | ScintWrap->SetFinish(polished); |
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| 244 | ScintWrap->SetModel(glisur); |
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| 245 | |
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| 246 | const G4int NUM = 2; |
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| 247 | |
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| 248 | G4double pp[NUM] = {2.0*eV, 3.5*eV}; |
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| 249 | G4double reflectivity[NUM] = {1., 1.}; |
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| 250 | G4double efficiency[NUM] = {0.0, 0.0}; |
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| 251 | |
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| 252 | G4MaterialPropertiesTable* ScintWrapProperty |
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| 253 | = new G4MaterialPropertiesTable(); |
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| 254 | |
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| 255 | ScintWrapProperty->AddProperty("REFLECTIVITY",pp,reflectivity,NUM); |
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| 256 | ScintWrapProperty->AddProperty("EFFICIENCY",pp,efficiency,NUM); |
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| 257 | ScintWrap->SetMaterialPropertiesTable(ScintWrapProperty); |
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| 258 | } |
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| 259 | |
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| 260 | return experimentalHall_phys; |
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| 261 | } |
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| 262 | |
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| 263 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 264 | void LXeDetectorConstruction::SetDimensions(G4ThreeVector dims){ |
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| 265 | this->scint_x=dims[0]; |
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| 266 | this->scint_y=dims[1]; |
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| 267 | this->scint_z=dims[2]; |
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| 268 | updated=true; |
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| 269 | } |
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| 270 | |
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| 271 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 272 | void LXeDetectorConstruction::SetHousingThickness(G4double d_mtl){ |
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| 273 | this->d_mtl=d_mtl; |
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| 274 | updated=true; |
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| 275 | } |
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| 276 | |
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| 277 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 278 | void LXeDetectorConstruction::SetNX(G4int nx){ |
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| 279 | this->nx=nx; |
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| 280 | updated=true; |
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| 281 | } |
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| 282 | |
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| 283 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 284 | void LXeDetectorConstruction::SetNY(G4int ny){ |
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| 285 | this->ny=ny; |
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| 286 | updated=true; |
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| 287 | } |
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| 288 | |
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| 289 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 290 | void LXeDetectorConstruction::SetNZ(G4int nz){ |
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| 291 | this->nz=nz; |
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| 292 | updated=true; |
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| 293 | } |
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| 294 | |
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| 295 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 296 | void LXeDetectorConstruction::SetPMTRadius(G4double outerRadius_pmt){ |
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| 297 | this->outerRadius_pmt=outerRadius_pmt; |
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| 298 | updated=true; |
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| 299 | } |
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| 300 | |
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| 301 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 302 | void LXeDetectorConstruction::SetDefaults(){ |
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| 303 | //Resets to default values |
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| 304 | d_mtl=0.0635*cm; |
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| 305 | |
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| 306 | scint_x = 17.8*cm; |
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| 307 | scint_y = 17.8*cm; |
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| 308 | scint_z = 22.6*cm; |
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| 309 | |
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| 310 | nx = 2; |
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| 311 | ny = 2; |
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| 312 | nz = 3; |
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| 313 | |
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| 314 | outerRadius_pmt = 2.3*cm; |
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| 315 | |
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| 316 | sphereOn = true; |
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| 317 | refl=1.0; |
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| 318 | |
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| 319 | nfibers=15; |
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| 320 | WLSslab=false; |
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| 321 | mainVolume=true; |
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| 322 | slab_z=2.5*mm; |
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| 323 | |
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| 324 | G4UImanager::GetUIpointer() |
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| 325 | ->ApplyCommand("/LXe/detector/scintYieldFactor 1."); |
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| 326 | |
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| 327 | if(LXe_mt)LXe_mt->AddConstProperty("SCINTILLATIONYIELD",12000./MeV); |
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| 328 | if(MPTPStyrene)MPTPStyrene->AddConstProperty("SCINTILLATIONYIELD",10./keV); |
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| 329 | |
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| 330 | updated=true; |
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| 331 | } |
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| 332 | |
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| 333 | |
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| 334 | //_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ |
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| 335 | void LXeDetectorConstruction::UpdateGeometry(){ |
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| 336 | |
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| 337 | // clean-up previous geometry |
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| 338 | G4GeometryManager::GetInstance()->OpenGeometry(); |
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| 339 | |
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| 340 | G4PhysicalVolumeStore::GetInstance()->Clean(); |
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| 341 | G4LogicalVolumeStore::GetInstance()->Clean(); |
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| 342 | G4SolidStore::GetInstance()->Clean(); |
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| 343 | G4LogicalSkinSurface::CleanSurfaceTable(); |
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| 344 | G4LogicalBorderSurface::CleanSurfaceTable(); |
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| 345 | |
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| 346 | //define new one |
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| 347 | G4RunManager::GetRunManager()->DefineWorldVolume(ConstructDetector()); |
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| 348 | G4RunManager::GetRunManager()->GeometryHasBeenModified(); |
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| 349 | |
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| 350 | updated=false; |
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| 351 | } |
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| 352 | |
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| 353 | void LXeDetectorConstruction::SetMainScintYield(G4double y){ |
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| 354 | LXe_mt->AddConstProperty("SCINTILLATIONYIELD",y/MeV); |
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| 355 | } |
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| 356 | |
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| 357 | void LXeDetectorConstruction::SetWLSScintYield(G4double y){ |
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| 358 | MPTPStyrene->AddConstProperty("SCINTILLATIONYIELD",y/MeV); |
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| 359 | } |
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| 360 | |
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| 361 | |
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| 362 | |
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| 363 | |
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| 364 | |
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