Gabriele Cosmo
218 lines
7.7 KiB
C++
218 lines
7.7 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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/// \file electromagnetic/TestEm6/src/DetectorConstruction.cc
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/// \brief Implementation of the DetectorConstruction class
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//
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "DetectorConstruction.hh"
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#include "DetectorMessenger.hh"
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#include "G4NistManager.hh"
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#include "G4RunManager.hh"
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#include "G4Material.hh"
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#include "G4Box.hh"
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#include "G4LogicalVolume.hh"
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#include "G4PVPlacement.hh"
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#include "G4UniformMagField.hh"
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#include "G4UserLimits.hh"
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#include "G4GeometryManager.hh"
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#include "G4PhysicalVolumeStore.hh"
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#include "G4LogicalVolumeStore.hh"
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#include "G4SolidStore.hh"
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#include "G4UnitsTable.hh"
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#include "G4SystemOfUnits.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::DetectorConstruction()
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:G4VUserDetectorConstruction(),
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fP_Box(0), fL_Box(0), fBoxSize(500*m), fMaterial(0), fMagField(0),
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fUserLimits(0), fDetectorMessenger(0)
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{
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DefineMaterials();
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SetMaterial("Iron");
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// create UserLimits
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fUserLimits = new G4UserLimits();
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// create commands for interactive definition of the detector
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fDetectorMessenger = new DetectorMessenger(this);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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DetectorConstruction::~DetectorConstruction()
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{ delete fDetectorMessenger;}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::Construct()
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{
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return ConstructVolumes();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::DefineMaterials()
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{
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G4double a, z, density;
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new G4Material("Beryllium", z= 4., a= 9.012182*g/mole, density= 1.848*g/cm3);
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new G4Material("Carbon", z= 6., a= 12.011*g/mole, density= 2.265*g/cm3);
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new G4Material("Iron", z=26., a= 55.85*g/mole, density= 7.870*g/cm3);
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
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{
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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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G4Box*
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sBox = new G4Box("Container", //its name
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fBoxSize/2,fBoxSize/2,fBoxSize/2); //its dimensions
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fL_Box = new G4LogicalVolume(sBox, //its shape
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fMaterial, //its material
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fMaterial->GetName()); //its name
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fL_Box->SetUserLimits(fUserLimits);
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fP_Box = new G4PVPlacement(0, //no rotation
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G4ThreeVector(), //at (0,0,0)
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fL_Box, //its logical volume
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fMaterial->GetName(), //its name
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0, //its mother volume
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false, //no boolean operation
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0); //copy number
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PrintParameters();
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//
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//always return the root volume
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//
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return fP_Box;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::PrintParameters()
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{
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G4cout << "\n The Box is " << G4BestUnit(fBoxSize,"Length")
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<< " of " << fMaterial->GetName() << G4endl;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetMaterial(const G4String& name)
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{
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G4cout << "###SetMaterial" << G4endl;
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// get the pointer to the existing material
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G4Material* mat = G4Material::GetMaterial(name, false);
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// create the material by its name
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if(!mat) { mat = G4NistManager::Instance()->FindOrBuildMaterial(name); }
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if (mat && mat != fMaterial) {
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G4cout << "### New target material: " << mat->GetName() << G4endl;
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fMaterial = mat;
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if(fL_Box) {
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fL_Box->SetMaterial(mat);
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G4RunManager::GetRunManager()->PhysicsHasBeenModified();
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetSize(G4double value)
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{
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fBoxSize = value;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4FieldManager.hh"
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#include "G4TransportationManager.hh"
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void DetectorConstruction::SetMagField(G4double fieldValue)
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{
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//apply a global uniform magnetic field along Z axis
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G4FieldManager* fieldMgr
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= G4TransportationManager::GetTransportationManager()->GetFieldManager();
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if (fMagField) delete fMagField; //delete the existing magn field
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if (fieldValue!=0.) // create a new one if non nul
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{
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fMagField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue));
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fieldMgr->SetDetectorField(fMagField);
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fieldMgr->CreateChordFinder(fMagField);
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}
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else
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{
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fMagField = 0;
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fieldMgr->SetDetectorField(fMagField);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void DetectorConstruction::SetMaxStepSize(G4double val)
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{
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// set the maximum allowed step size
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//
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if (val <= DBL_MIN)
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{ G4cout << "\n --->warning from SetMaxStepSize: maxStep "
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<< val << " out of range. Command refused" << G4endl;
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return;
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}
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fUserLimits->SetMaxAllowedStep(val);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4RunManager.hh"
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void DetectorConstruction::UpdateGeometry()
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{
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G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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