TestEm15/src/DetectorConstruction.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 /// \file DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028
0029 #include "DetectorConstruction.hh"
0030
0031 #include "DetectorMessenger.hh"
0032
0033 #include "G4Box.hh"
0034 #include "G4GeometryManager.hh"
0035 #include "G4LogicalVolume.hh"
0036 #include "G4LogicalVolumeStore.hh"
0037 #include "G4Material.hh"
0038 #include "G4NistManager.hh"
0039 #include "G4PVPlacement.hh"
0040 #include "G4PhysicalConstants.hh"
0041 #include "G4PhysicalVolumeStore.hh"
0042 #include "G4SolidStore.hh"
0043 #include "G4SystemOfUnits.hh"
0044 #include "G4UnitsTable.hh"
0045
0046 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0047
0048 DetectorConstruction::DetectorConstruction()
0049   : G4VUserDetectorConstruction(),
0050     fWorld(0),
0051     fBox(0),
0052     fMaterial(0),
0053     fWMaterial(0),
0054     fDetectorMessenger(0)
0055 {
0056   fBoxSize = 100 * m;
0057   fWorldSize = 1.2 * fBoxSize;
0058   DefineMaterials();
0059   SetMaterial("Water");
0060   fDetectorMessenger = new DetectorMessenger(this);
0061 }
0062
0063 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0064
0065 DetectorConstruction::~DetectorConstruction()
0066 {
0067   delete fDetectorMessenger;
0068 }
0069
0070 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0071
0072 G4VPhysicalVolume* DetectorConstruction::Construct()
0073 {
0074   return ConstructVolumes();
0075 }
0076
0077 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0078
0079 void DetectorConstruction::DefineMaterials()
0080 {
0081   //
0082   // define Elements
0083   //
0084   G4double z, a;
0085
0086   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0087   G4Element* N = new G4Element("Nitrogen", "N", z = 7., a = 14.01 * g / mole);
0088   G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
0089   G4Element* Na = new G4Element("Sodium", "Na", z = 11., a = 22.99 * g / mole);
0090   G4Element* Ge = new G4Element("Germanium", "Ge", z = 32., a = 72.59 * g / mole);
0091   G4Element* I = new G4Element("Iodine", "I", z = 53., a = 126.90 * g / mole);
0092   G4Element* Bi = new G4Element("Bismuth", "Bi", z = 83., a = 208.98 * g / mole);
0093
0094   //
0095   // define materials
0096   //
0097   G4double density;
0098   G4int ncomponents, natoms;
0099   G4double fractionmass;
0100
0101   G4Material* Air = new G4Material("Air", density = 1.290 * mg / cm3, ncomponents = 2);
0102   Air->AddElement(N, fractionmass = 70. * perCent);
0103   Air->AddElement(O, fractionmass = 30. * perCent);
0104
0105   G4Material* H2l = new G4Material("H2liquid", density = 70.8 * mg / cm3, ncomponents = 1);
0106   H2l->AddElement(H, fractionmass = 1.);
0107
0108   G4Material* H2O = new G4Material("Water", density = 1.000 * g / cm3, ncomponents = 2);
0109   H2O->AddElement(H, natoms = 2);
0110   H2O->AddElement(O, natoms = 1);
0111   H2O->SetChemicalFormula("H_2O");
0112   H2O->GetIonisation()->SetMeanExcitationEnergy(75.0 * eV);
0113
0114   new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
0115
0116   new G4Material("Carbon", z = 6., a = 12.01 * g / mole, density = 2.267 * g / cm3);
0117
0118   new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.700 * g / cm3);
0119
0120   new G4Material("Silicon", z = 14., a = 28.09 * g / mole, density = 2.330 * g / cm3);
0121
0122   new G4Material("Germanium", z = 32., a = 72.61 * g / mole, density = 5.323 * g / cm3);
0123
0124   G4Material* NaI = new G4Material("NaI", density = 3.67 * g / cm3, ncomponents = 2);
0125   NaI->AddElement(Na, natoms = 1);
0126   NaI->AddElement(I, natoms = 1);
0127   NaI->GetIonisation()->SetMeanExcitationEnergy(452 * eV);
0128
0129   G4Material* Iod = new G4Material("Iodine", density = 4.93 * g / cm3, ncomponents = 1);
0130   Iod->AddElement(I, natoms = 1);
0131
0132   G4Material* BGO = new G4Material("BGO", density = 7.10 * g / cm3, ncomponents = 3);
0133   BGO->AddElement(O, natoms = 12);
0134   BGO->AddElement(Ge, natoms = 3);
0135   BGO->AddElement(Bi, natoms = 4);
0136
0137   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
0138
0139   new G4Material("Tungsten", z = 74., a = 183.85 * g / mole, density = 19.30 * g / cm3);
0140
0141   new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
0142
0143   new G4Material("Uranium", z = 92., a = 238.03 * g / mole, density = 18.95 * g / cm3);
0144
0145   density = universe_mean_density;  // from PhysicalConstants.h
0146   G4double pressure = 3.e-18 * pascal;
0147   G4double temperature = 2.73 * kelvin;
0148   G4Material* vacuum = new G4Material("Galactic", z = 1, a = 1.008 * g / mole, density, kStateGas,
0149                                       temperature, pressure);
0150
0151   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0152
0153   // default material
0154   fWMaterial = vacuum;
0155 }
0156
0157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0158
0159 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0160 {
0161   // Cleanup old geometry
0162   G4GeometryManager::GetInstance()->OpenGeometry();
0163   G4PhysicalVolumeStore::GetInstance()->Clean();
0164   G4LogicalVolumeStore::GetInstance()->Clean();
0165   G4SolidStore::GetInstance()->Clean();
0166
0167   // World
0168   //
0169   G4Box* sWorld = new G4Box("World",  // name
0170                             fWorldSize / 2, fWorldSize / 2, fWorldSize / 2);  // dimensions
0171
0172   G4LogicalVolume* lWorld = new G4LogicalVolume(sWorld,  // shape
0173                                                 fWMaterial,  // material
0174                                                 "World");  // name
0175
0176   fWorld = new G4PVPlacement(0,  // no rotation
0177                              G4ThreeVector(),  // at (0,0,0)
0178                              lWorld,  // logical volume
0179                              "World",  // name
0180                              0,  // mother  volume
0181                              false,  // no boolean operation
0182                              0);  // copy number
0183
0184   // Box
0185   //
0186   G4Box* sBox = new G4Box("Container",  // its name
0187                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0188
0189   G4LogicalVolume* lBox = new G4LogicalVolume(sBox,  // its shape
0190                                               fMaterial,  // its material
0191                                               fMaterial->GetName());  // its name
0192
0193   fBox = new G4PVPlacement(0,  // no rotation
0194                            G4ThreeVector(),  // at (0,0,0)
0195                            lBox,  // its logical volume
0196                            fMaterial->GetName(),  // its name
0197                            lWorld,  // its mother  volume
0198                            false,  // no boolean operation
0199                            0);  // copy number
0200
0201   PrintParameters();
0202
0203   // always return the root volume
0204   //
0205   return fWorld;
0206 }
0207
0208 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0209
0210 void DetectorConstruction::PrintParameters()
0211 {
0212   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0213          << G4endl;
0214 }
0215
0216 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0217
0218 void DetectorConstruction::SetMaterial(G4String materialChoice)
0219 {
0220   // search the material by its name
0221   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0222
0223   if (pttoMaterial) {
0224     fMaterial = pttoMaterial;
0225     UpdateGeometry();
0226   }
0227   else {
0228     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
0229            << " not found" << G4endl;
0230   }
0231 }
0232
0233 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0234
0235 void DetectorConstruction::SetSize(G4double value)
0236 {
0237   fBoxSize = value;
0238   fWorldSize = 1.2 * fBoxSize;
0239   UpdateGeometry();
0240 }
0241
0242 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0243
0244 #include "G4RunManager.hh"
0245
0246 void DetectorConstruction::UpdateGeometry()
0247 {
0248   if (fWorld) G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
0249 }
0250
0251 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......