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Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // // // $Id: ExN03DetectorConstruction.cc,v 1.24 2008/08/12 20:00:03 gum Exp $ // GEANT4 tag $Name: geant4-09-03-cand-01 $ // // //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... #include "ExN03DetectorConstruction.hh" #include "ExN03DetectorMessenger.hh" #include "G4Material.hh" #include "G4Box.hh" #include "G4LogicalVolume.hh" #include "G4PVPlacement.hh" #include "G4PVReplica.hh" #include "G4UniformMagField.hh" #include "G4GeometryManager.hh" #include "G4PhysicalVolumeStore.hh" #include "G4LogicalVolumeStore.hh" #include "G4SolidStore.hh" #include "G4VisAttributes.hh" #include "G4Colour.hh" //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... ExN03DetectorConstruction::ExN03DetectorConstruction() :AbsorberMaterial(0),GapMaterial(0),defaultMaterial(0), solidWorld(0),logicWorld(0),physiWorld(0), solidCalor(0),logicCalor(0),physiCalor(0), solidLayer(0),logicLayer(0),physiLayer(0), solidAbsorber(0),logicAbsorber(0),physiAbsorber(0), solidGap (0),logicGap (0),physiGap (0), magField(0) { // default parameter values of the calorimeter AbsorberThickness = 10.*mm; GapThickness = 5.*mm; NbOfLayers = 10; CalorSizeYZ = 10.*cm; ComputeCalorParameters(); // materials DefineMaterials(); SetAbsorberMaterial("Lead"); SetGapMaterial("liquidArgon"); // create commands for interactive definition of the calorimeter detectorMessenger = new ExN03DetectorMessenger(this); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... ExN03DetectorConstruction::~ExN03DetectorConstruction() { delete detectorMessenger;} //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... G4VPhysicalVolume* ExN03DetectorConstruction::Construct() { return ConstructCalorimeter(); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::DefineMaterials() { //This function illustrates the possible ways to define materials G4String symbol; //a=mass of a mole; G4double a, z, density; //z=mean number of protons; G4int iz, n; //iz=number of protons in an isotope; // n=number of nucleons in an isotope; G4int ncomponents, natoms; G4double abundance, fractionmass; // // define Elements // G4Element* H = new G4Element("Hydrogen",symbol="H" , z= 1., a= 1.01*g/mole); G4Element* C = new G4Element("Carbon" ,symbol="C" , z= 6., a= 12.01*g/mole); G4Element* N = new G4Element("Nitrogen",symbol="N" , z= 7., a= 14.01*g/mole); G4Element* O = new G4Element("Oxygen" ,symbol="O" , z= 8., a= 16.00*g/mole); G4Element* Si = new G4Element("Silicon",symbol="Si" , z= 14., a= 28.09*g/mole); // // define an Element from isotopes, by relative abundance // G4Isotope* U5 = new G4Isotope("U235", iz=92, n=235, a=235.01*g/mole); G4Isotope* U8 = new G4Isotope("U238", iz=92, n=238, a=238.03*g/mole); G4Element* U = new G4Element("enriched Uranium",symbol="U",ncomponents=2); U->AddIsotope(U5, abundance= 90.*perCent); U->AddIsotope(U8, abundance= 10.*perCent); // // define simple materials // new G4Material("Aluminium", z=13., a=26.98*g/mole, density=2.700*g/cm3); new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3); new G4Material("Lead" , z=82., a= 207.19*g/mole, density= 11.35*g/cm3); // // define a material from elements. case 1: chemical molecule // G4Material* H2O = new G4Material("Water", density= 1.000*g/cm3, ncomponents=2); H2O->AddElement(H, natoms=2); H2O->AddElement(O, natoms=1); // overwrite computed meanExcitationEnergy with ICRU recommended value H2O->GetIonisation()->SetMeanExcitationEnergy(75.0*eV); G4Material* Sci = new G4Material("Scintillator", density= 1.032*g/cm3, ncomponents=2); Sci->AddElement(C, natoms=9); Sci->AddElement(H, natoms=10); G4Material* Myl = new G4Material("Mylar", density= 1.397*g/cm3, ncomponents=3); Myl->AddElement(C, natoms=10); Myl->AddElement(H, natoms= 8); Myl->AddElement(O, natoms= 4); G4Material* SiO2 = new G4Material("quartz",density= 2.200*g/cm3, ncomponents=2); SiO2->AddElement(Si, natoms=1); SiO2->AddElement(O , natoms=2); // // define a material from elements. case 2: mixture by fractional mass // G4Material* Air = new G4Material("Air" , density= 1.290*mg/cm3, ncomponents=2); Air->AddElement(N, fractionmass=0.7); Air->AddElement(O, fractionmass=0.3); // // define a material from elements and/or others materials (mixture of mixtures) // G4Material* Aerog = new G4Material("Aerogel", density= 0.200*g/cm3, ncomponents=3); Aerog->AddMaterial(SiO2, fractionmass=62.5*perCent); Aerog->AddMaterial(H2O , fractionmass=37.4*perCent); Aerog->AddElement (C , fractionmass= 0.1*perCent); // // examples of gas in non STP conditions // G4Material* CO2 = new G4Material("CarbonicGas", density= 1.842*mg/cm3, ncomponents=2, kStateGas, 325.*kelvin, 50.*atmosphere); CO2->AddElement(C, natoms=1); CO2->AddElement(O, natoms=2); G4Material* steam = new G4Material("WaterSteam", density= 0.3*mg/cm3, ncomponents=1, kStateGas, 500.*kelvin, 2.*atmosphere); steam->AddMaterial(H2O, fractionmass=1.); // // examples of vacuum // G4Material* Vacuum = new G4Material("Galactic", z=1., a=1.01*g/mole,density= universe_mean_density, kStateGas, 2.73*kelvin, 3.e-18*pascal); G4Material* beam = new G4Material("Beam", density= 1.e-5*g/cm3, ncomponents=1, kStateGas, STP_Temperature, 2.e-2*bar); beam->AddMaterial(Air, fractionmass=1.); G4cout << *(G4Material::GetMaterialTable()) << G4endl; //default materials of the World defaultMaterial = Vacuum; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... G4VPhysicalVolume* ExN03DetectorConstruction::ConstructCalorimeter() { // Clean old geometry, if any // G4GeometryManager::GetInstance()->OpenGeometry(); G4PhysicalVolumeStore::GetInstance()->Clean(); G4LogicalVolumeStore::GetInstance()->Clean(); G4SolidStore::GetInstance()->Clean(); // complete the Calor parameters definition ComputeCalorParameters(); // // World // solidWorld = new G4Box("World", //its name WorldSizeX/2,WorldSizeYZ/2,WorldSizeYZ/2); //its size logicWorld = new G4LogicalVolume(solidWorld, //its solid defaultMaterial, //its material "World"); //its name physiWorld = new G4PVPlacement(0, //no rotation G4ThreeVector(), //at (0,0,0) logicWorld, //its logical volume "World", //its name 0, //its mother volume false, //no boolean operation 0); //copy number // // Calorimeter // solidCalor=0; logicCalor=0; physiCalor=0; solidLayer=0; logicLayer=0; physiLayer=0; if (CalorThickness > 0.) { solidCalor = new G4Box("Calorimeter", //its name CalorThickness/2,CalorSizeYZ/2,CalorSizeYZ/2);//size logicCalor = new G4LogicalVolume(solidCalor, //its solid defaultMaterial, //its material "Calorimeter"); //its name physiCalor = new G4PVPlacement(0, //no rotation G4ThreeVector(), //at (0,0,0) logicCalor, //its logical volume "Calorimeter", //its name logicWorld, //its mother volume false, //no boolean operation 0); //copy number // // Layer // solidLayer = new G4Box("Layer", //its name LayerThickness/2,CalorSizeYZ/2,CalorSizeYZ/2); //size logicLayer = new G4LogicalVolume(solidLayer, //its solid defaultMaterial, //its material "Layer"); //its name if (NbOfLayers > 1) physiLayer = new G4PVReplica("Layer", //its name logicLayer, //its logical volume logicCalor, //its mother kXAxis, //axis of replication NbOfLayers, //number of replica LayerThickness); //witdth of replica else physiLayer = new G4PVPlacement(0, //no rotation G4ThreeVector(), //at (0,0,0) logicLayer, //its logical volume "Layer", //its name logicCalor, //its mother volume false, //no boolean operation 0); //copy number } // // Absorber // solidAbsorber=0; logicAbsorber=0; physiAbsorber=0; if (AbsorberThickness > 0.) { solidAbsorber = new G4Box("Absorber", //its name AbsorberThickness/2,CalorSizeYZ/2,CalorSizeYZ/2); logicAbsorber = new G4LogicalVolume(solidAbsorber, //its solid AbsorberMaterial, //its material AbsorberMaterial->GetName()); //name physiAbsorber = new G4PVPlacement(0, //no rotation G4ThreeVector(-GapThickness/2,0.,0.), //its position logicAbsorber, //its logical volume AbsorberMaterial->GetName(), //its name logicLayer, //its mother false, //no boulean operat 0); //copy number } // // Gap // solidGap=0; logicGap=0; physiGap=0; if (GapThickness > 0.) { solidGap = new G4Box("Gap", GapThickness/2,CalorSizeYZ/2,CalorSizeYZ/2); logicGap = new G4LogicalVolume(solidGap, GapMaterial, GapMaterial->GetName()); physiGap = new G4PVPlacement(0, //no rotation G4ThreeVector(AbsorberThickness/2,0.,0.), //its position logicGap, //its logical volume GapMaterial->GetName(), //its name logicLayer, //its mother false, //no boulean operat 0); //copy number } PrintCalorParameters(); // // Visualization attributes // logicWorld->SetVisAttributes (G4VisAttributes::Invisible); G4VisAttributes* simpleBoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); simpleBoxVisAtt->SetVisibility(true); logicCalor->SetVisAttributes(simpleBoxVisAtt); /* // Below are vis attributes that permits someone to test / play // with the interactive expansion / contraction geometry system of the // vis/OpenInventor driver : {G4VisAttributes* simpleBoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,0.0)); simpleBoxVisAtt->SetVisibility(true); delete logicCalor->GetVisAttributes(); logicCalor->SetVisAttributes(simpleBoxVisAtt);} {G4VisAttributes* atb= new G4VisAttributes(G4Colour(1.0,0.0,0.0)); logicLayer->SetVisAttributes(atb);} {G4VisAttributes* atb= new G4VisAttributes(G4Colour(0.0,1.0,0.0)); atb->SetForceSolid(true); logicAbsorber->SetVisAttributes(atb);} {//Set opacity = 0.2 then transparency = 1 - 0.2 = 0.8 G4VisAttributes* atb= new G4VisAttributes(G4Colour(0.0,0.0,1.0,0.2)); atb->SetForceSolid(true); logicGap->SetVisAttributes(atb);} */ // //always return the physical World // return physiWorld; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::PrintCalorParameters() { G4cout << "\n------------------------------------------------------------" << "\n---> The calorimeter is " << NbOfLayers << " layers of: [ " << AbsorberThickness/mm << "mm of " << AbsorberMaterial->GetName() << " + " << GapThickness/mm << "mm of " << GapMaterial->GetName() << " ] " << "\n------------------------------------------------------------\n"; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::SetAbsorberMaterial(G4String materialChoice) { // search the material by its name G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice); if (pttoMaterial) AbsorberMaterial = pttoMaterial; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::SetGapMaterial(G4String materialChoice) { // search the material by its name G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice); if (pttoMaterial) GapMaterial = pttoMaterial; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::SetAbsorberThickness(G4double val) { // change Absorber thickness and recompute the calorimeter parameters AbsorberThickness = val; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::SetGapThickness(G4double val) { // change Gap thickness and recompute the calorimeter parameters GapThickness = val; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::SetCalorSizeYZ(G4double val) { // change the transverse size and recompute the calorimeter parameters CalorSizeYZ = val; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... void ExN03DetectorConstruction::SetNbOfLayers(G4int val) { NbOfLayers = val; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... #include "G4FieldManager.hh" #include "G4TransportationManager.hh" void ExN03DetectorConstruction::SetMagField(G4double fieldValue) { //apply a global uniform magnetic field along Z axis G4FieldManager* fieldMgr = G4TransportationManager::GetTransportationManager()->GetFieldManager(); if(magField) delete magField; //delete the existing magn field if(fieldValue!=0.) // create a new one if non nul { magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue)); fieldMgr->SetDetectorField(magField); fieldMgr->CreateChordFinder(magField); } else { magField = 0; fieldMgr->SetDetectorField(magField); } } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... #include "G4RunManager.hh" void ExN03DetectorConstruction::UpdateGeometry() { G4RunManager::GetRunManager()->DefineWorldVolume(ConstructCalorimeter()); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......