Gabriele Cosmo
365 lines
13 KiB
C++
365 lines
13 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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#include "LXeDetectorConstruction.hh"
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#include "LXePMTSD.hh"
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#include "LXeScintSD.hh"
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#include "LXeDetectorMessenger.hh"
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#include "LXeMainVolume.hh"
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#include "LXeWLSSlab.hh"
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#include "G4SDManager.hh"
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#include "G4RunManager.hh"
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#include "G4LogicalBorderSurface.hh"
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#include "G4LogicalSkinSurface.hh"
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#include "G4OpticalSurface.hh"
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#include "G4MaterialTable.hh"
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#include "G4VisAttributes.hh"
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#include "G4Material.hh"
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#include "G4Box.hh"
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#include "G4Tubs.hh"
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#include "G4Sphere.hh"
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#include "G4LogicalVolume.hh"
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#include "G4ThreeVector.hh"
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#include "G4PVPlacement.hh"
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#include "globals.hh"
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#include "G4SolidStore.hh"
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#include "G4LogicalVolumeStore.hh"
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#include "G4PhysicalVolumeStore.hh"
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#include "G4GeometryManager.hh"
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#include "G4UImanager.hh"
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G4bool LXeDetectorConstruction::sphereOn = true;
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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LXeDetectorConstruction::LXeDetectorConstruction()
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: LXe_mt(NULL), MPTPStyrene(NULL)
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{
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SetDefaults();
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detectorMessenger = new LXeDetectorMessenger(this);
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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LXeDetectorConstruction::~LXeDetectorConstruction(){
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::DefineMaterials(){
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G4double a; // atomic mass
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G4double z; // atomic number
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G4double density;
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G4int polyPMMA = 1;
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G4int nC_PMMA = 3+2*polyPMMA;
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G4int nH_PMMA = 6+2*polyPMMA;
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G4int polyeth = 1;
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G4int nC_eth = 2*polyeth;
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G4int nH_eth = 4*polyeth;
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//***Elements
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H = new G4Element("H", "H", z=1., a=1.01*g/mole);
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C = new G4Element("C", "C", z=6., a=12.01*g/mole);
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N = new G4Element("N", "N", z=7., a= 14.01*g/mole);
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O = new G4Element("O" , "O", z=8., a= 16.00*g/mole);
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//***Materials
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//Liquid Xenon
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LXe = new G4Material("LXe",z=54.,a=131.29*g/mole,density=3.020*g/cm3);
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//Aluminum
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Al = new G4Material("Al",z=13.,a=26.98*g/mole,density=2.7*g/cm3);
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//Vacuum
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Vacuum = new G4Material("Vacuum",z=1.,a=1.01*g/mole,
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density=universe_mean_density,kStateGas,0.1*kelvin,
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1.e-19*pascal);
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//Air
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Air = new G4Material("Air", density= 1.29*mg/cm3, 2);
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Air->AddElement(N, 70*perCent);
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Air->AddElement(O, 30*perCent);
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//Glass
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Glass = new G4Material("Glass", density=1.032*g/cm3,2);
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Glass->AddElement(C,91.533*perCent);
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Glass->AddElement(H,8.467*perCent);
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//Polystyrene
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Pstyrene = new G4Material("Polystyrene", density= 1.03*g/cm3, 2);
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Pstyrene->AddElement(C, 8);
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Pstyrene->AddElement(H, 8);
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//Fiber(PMMA)
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PMMA = new G4Material("PMMA", density=1190*kg/m3,3);
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PMMA->AddElement(H,nH_PMMA);
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PMMA->AddElement(C,nC_PMMA);
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PMMA->AddElement(O,2);
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//Cladding(polyethylene)
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Pethylene = new G4Material("Pethylene", density=1200*kg/m3,2);
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Pethylene->AddElement(H,nH_eth);
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Pethylene->AddElement(C,nC_eth);
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//Double cladding(flourinated polyethylene)
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fPethylene = new G4Material("fPethylene", density=1400*kg/m3,2);
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fPethylene->AddElement(H,nH_eth);
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fPethylene->AddElement(C,nC_eth);
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//***Material properties tables
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const G4int LXe_NUMENTRIES = 3;
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G4double LXe_Energy[LXe_NUMENTRIES] = { 7.0*eV , 7.07*eV, 7.14*eV };
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G4double LXe_SCINT[LXe_NUMENTRIES] = { 0.1, 1.0, 0.1 };
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G4double LXe_RIND[LXe_NUMENTRIES] = { 1.59 , 1.57, 1.54 };
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G4double LXe_ABSL[LXe_NUMENTRIES] = { 35.*cm, 35.*cm, 35.*cm};
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LXe_mt = new G4MaterialPropertiesTable();
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LXe_mt->AddProperty("FASTCOMPONENT", LXe_Energy, LXe_SCINT, LXe_NUMENTRIES);
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LXe_mt->AddProperty("SLOWCOMPONENT", LXe_Energy, LXe_SCINT, LXe_NUMENTRIES);
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LXe_mt->AddProperty("RINDEX", LXe_Energy, LXe_RIND, LXe_NUMENTRIES);
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LXe_mt->AddProperty("ABSLENGTH", LXe_Energy, LXe_ABSL, LXe_NUMENTRIES);
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LXe_mt->AddConstProperty("SCINTILLATIONYIELD",12000./MeV);
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LXe_mt->AddConstProperty("RESOLUTIONSCALE",1.0);
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LXe_mt->AddConstProperty("FASTTIMECONSTANT",20.*ns);
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LXe_mt->AddConstProperty("SLOWTIMECONSTANT",45.*ns);
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LXe_mt->AddConstProperty("YIELDRATIO",1.0);
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LXe->SetMaterialPropertiesTable(LXe_mt);
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G4double Glass_RIND[LXe_NUMENTRIES]={1.49,1.49,1.49};
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G4double Glass_AbsLength[LXe_NUMENTRIES]={420.*cm,420.*cm,420.*cm};
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G4MaterialPropertiesTable *Glass_mt = new G4MaterialPropertiesTable();
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Glass_mt->AddProperty("ABSLENGTH",LXe_Energy,Glass_AbsLength,LXe_NUMENTRIES);
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Glass_mt->AddProperty("RINDEX",LXe_Energy,Glass_RIND,LXe_NUMENTRIES);
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Glass->SetMaterialPropertiesTable(Glass_mt);
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G4double Vacuum_Energy[LXe_NUMENTRIES]={2.0*eV,7.0*eV,7.14*eV};
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G4double Vacuum_RIND[LXe_NUMENTRIES]={1.,1.,1.};
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G4MaterialPropertiesTable *Vacuum_mt = new G4MaterialPropertiesTable();
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Vacuum_mt->AddProperty("RINDEX", Vacuum_Energy, Vacuum_RIND,LXe_NUMENTRIES);
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Vacuum->SetMaterialPropertiesTable(Vacuum_mt);
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Air->SetMaterialPropertiesTable(Vacuum_mt);//Give air the same rindex
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const G4int WLS_NUMENTRIES = 4;
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G4double WLS_Energy[] = {2.00*eV,2.87*eV,2.90*eV,3.47*eV};
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G4double RIndexPstyrene[WLS_NUMENTRIES]={ 1.5, 1.5, 1.5, 1.5};
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G4double Absorption1[WLS_NUMENTRIES]={2.*cm, 2.*cm, 2.*cm, 2.*cm};
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G4double ScintilFast[WLS_NUMENTRIES]={0.00, 0.00, 1.00, 1.00};
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MPTPStyrene = new G4MaterialPropertiesTable();
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MPTPStyrene->AddProperty("RINDEX",WLS_Energy,RIndexPstyrene,WLS_NUMENTRIES);
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MPTPStyrene->AddProperty("ABSLENGTH",WLS_Energy,Absorption1,WLS_NUMENTRIES);
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MPTPStyrene->AddProperty("FASTCOMPONENT",WLS_Energy, ScintilFast,
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WLS_NUMENTRIES);
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MPTPStyrene->AddConstProperty("SCINTILLATIONYIELD",10./keV);
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MPTPStyrene->AddConstProperty("RESOLUTIONSCALE",1.0);
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MPTPStyrene->AddConstProperty("FASTTIMECONSTANT", 10.*ns);
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Pstyrene->SetMaterialPropertiesTable(MPTPStyrene);
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G4double RefractiveIndexFiber[WLS_NUMENTRIES]={ 1.60, 1.60, 1.60, 1.60};
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G4double AbsFiber[WLS_NUMENTRIES]={9.00*m,9.00*m,0.1*mm,0.1*mm};
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G4double EmissionFib[WLS_NUMENTRIES]={1.0, 1.0, 0.0, 0.0};
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G4MaterialPropertiesTable* MPTFiber = new G4MaterialPropertiesTable();
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MPTFiber->AddProperty("RINDEX",WLS_Energy,RefractiveIndexFiber,
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WLS_NUMENTRIES);
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MPTFiber->AddProperty("WLSABSLENGTH",WLS_Energy,AbsFiber,WLS_NUMENTRIES);
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MPTFiber->AddProperty("WLSCOMPONENT",WLS_Energy,EmissionFib,WLS_NUMENTRIES);
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MPTFiber->AddConstProperty("WLSTIMECONSTANT", 0.5*ns);
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PMMA->SetMaterialPropertiesTable(MPTFiber);
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G4double RefractiveIndexClad1[WLS_NUMENTRIES]={ 1.49, 1.49, 1.49, 1.49};
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G4MaterialPropertiesTable* MPTClad1 = new G4MaterialPropertiesTable();
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MPTClad1->AddProperty("RINDEX",WLS_Energy,RefractiveIndexClad1,
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WLS_NUMENTRIES);
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MPTClad1->AddProperty("ABSLENGTH",WLS_Energy,AbsFiber,WLS_NUMENTRIES);
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Pethylene->SetMaterialPropertiesTable(MPTClad1);
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G4double RefractiveIndexClad2[WLS_NUMENTRIES]={ 1.42, 1.42, 1.42, 1.42};
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G4MaterialPropertiesTable* MPTClad2 = new G4MaterialPropertiesTable();
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MPTClad2->AddProperty("RINDEX",WLS_Energy,RefractiveIndexClad2,
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WLS_NUMENTRIES);
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MPTClad2->AddProperty("ABSLENGTH",WLS_Energy,AbsFiber,WLS_NUMENTRIES);
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fPethylene->SetMaterialPropertiesTable(MPTClad2);
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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G4VPhysicalVolume* LXeDetectorConstruction::Construct(){
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DefineMaterials();
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return ConstructDetector();
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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G4VPhysicalVolume* LXeDetectorConstruction::ConstructDetector()
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{
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//The experimental hall walls are all 1m away from housing walls
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G4double expHall_x = scint_x+d_mtl+1.*m;
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G4double expHall_y = scint_y+d_mtl+1.*m;
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G4double expHall_z = scint_z+d_mtl+1.*m;
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//Create experimental hall
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experimentalHall_box
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= new G4Box("expHall_box",expHall_x,expHall_y,expHall_z);
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experimentalHall_log = new G4LogicalVolume(experimentalHall_box,
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Vacuum,"expHall_log",0,0,0);
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experimentalHall_phys = new G4PVPlacement(0,G4ThreeVector(),
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experimentalHall_log,"expHall",0,false,0);
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experimentalHall_log->SetVisAttributes(G4VisAttributes::Invisible);
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//Place the main volume
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if(mainVolume){
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new LXeMainVolume(0,G4ThreeVector(),experimentalHall_log,false,0,this);
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}
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//Place the WLS slab
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if(WLSslab){
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G4VPhysicalVolume* slab = new LXeWLSSlab(0,G4ThreeVector(0.,0.,
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-scint_z/2.-slab_z-1.*cm),
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experimentalHall_log,false,0,
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this);
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//Surface properties for the WLS slab
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G4OpticalSurface* ScintWrap = new G4OpticalSurface("ScintWrap");
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new G4LogicalBorderSurface("ScintWrap", slab,
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experimentalHall_phys,
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ScintWrap);
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ScintWrap->SetType(dielectric_metal);
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ScintWrap->SetFinish(polished);
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ScintWrap->SetModel(glisur);
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const G4int NUM = 2;
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G4double pp[NUM] = {2.0*eV, 3.5*eV};
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G4double reflectivity[NUM] = {1., 1.};
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G4double efficiency[NUM] = {0.0, 0.0};
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G4MaterialPropertiesTable* ScintWrapProperty
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= new G4MaterialPropertiesTable();
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ScintWrapProperty->AddProperty("REFLECTIVITY",pp,reflectivity,NUM);
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ScintWrapProperty->AddProperty("EFFICIENCY",pp,efficiency,NUM);
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ScintWrap->SetMaterialPropertiesTable(ScintWrapProperty);
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}
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return experimentalHall_phys;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetDimensions(G4ThreeVector dims){
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this->scint_x=dims[0];
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this->scint_y=dims[1];
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this->scint_z=dims[2];
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetHousingThickness(G4double d_mtl){
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this->d_mtl=d_mtl;
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetNX(G4int nx){
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this->nx=nx;
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetNY(G4int ny){
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this->ny=ny;
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetNZ(G4int nz){
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this->nz=nz;
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetPMTRadius(G4double outerRadius_pmt){
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this->outerRadius_pmt=outerRadius_pmt;
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::SetDefaults(){
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//Resets to default values
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d_mtl=0.0635*cm;
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scint_x = 17.8*cm;
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scint_y = 17.8*cm;
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scint_z = 22.6*cm;
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nx = 2;
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ny = 2;
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nz = 3;
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outerRadius_pmt = 2.3*cm;
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sphereOn = true;
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refl=1.0;
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nfibers=15;
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WLSslab=false;
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mainVolume=true;
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slab_z=2.5*mm;
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G4UImanager::GetUIpointer()
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->ApplyCommand("/LXe/detector/scintYieldFactor 1.");
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if(LXe_mt)LXe_mt->AddConstProperty("SCINTILLATIONYIELD",12000./MeV);
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if(MPTPStyrene)MPTPStyrene->AddConstProperty("SCINTILLATIONYIELD",10./keV);
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updated=true;
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}
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//_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
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void LXeDetectorConstruction::UpdateGeometry(){
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// clean-up previous geometry
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G4GeometryManager::GetInstance()->OpenGeometry();
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G4PhysicalVolumeStore::GetInstance()->Clean();
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G4LogicalVolumeStore::GetInstance()->Clean();
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G4SolidStore::GetInstance()->Clean();
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G4LogicalSkinSurface::CleanSurfaceTable();
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G4LogicalBorderSurface::CleanSurfaceTable();
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//define new one
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G4RunManager::GetRunManager()->DefineWorldVolume(ConstructDetector());
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G4RunManager::GetRunManager()->GeometryHasBeenModified();
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updated=false;
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}
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void LXeDetectorConstruction::SetMainScintYield(G4double y){
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LXe_mt->AddConstProperty("SCINTILLATIONYIELD",y/MeV);
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}
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void LXeDetectorConstruction::SetWLSScintYield(G4double y){
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MPTPStyrene->AddConstProperty("SCINTILLATIONYIELD",y/MeV);
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}
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