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geant4/examples/basic/B4/B4a/include/B4DetectorConstruction.hh
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2018-12-07 15:15:39 +01:00

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//
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/// \file B4DetectorConstruction.hh
/// \brief Definition of the B4DetectorConstruction class
#ifndef B4DetectorConstruction_h
#define B4DetectorConstruction_h 1
#include "G4VUserDetectorConstruction.hh"
#include "globals.hh"
class G4VPhysicalVolume;
class G4GlobalMagFieldMessenger;
/// Detector construction class to define materials and geometry.
/// The calorimeter is a box made of a given number of layers. A layer consists
/// of an absorber plate and of a detection gap. The layer is replicated.
///
/// Four parameters define the geometry of the calorimeter :
///
/// - the thickness of an absorber plate,
/// - the thickness of a gap,
/// - the number of layers,
/// - the transverse size of the calorimeter (the input face is a square).
///
/// In addition a transverse uniform magnetic field is defined
/// via G4GlobalMagFieldMessenger class.
class B4DetectorConstruction : public G4VUserDetectorConstruction
{
public:
B4DetectorConstruction();
virtual ~B4DetectorConstruction();
public:
virtual G4VPhysicalVolume* Construct();
virtual void ConstructSDandField();
// get methods
//
const G4VPhysicalVolume* GetAbsorberPV() const;
const G4VPhysicalVolume* GetGapPV() const;
private:
// methods
//
void DefineMaterials();
G4VPhysicalVolume* DefineVolumes();
// data members
//
static G4ThreadLocal G4GlobalMagFieldMessenger* fMagFieldMessenger;
// magnetic field messenger
G4VPhysicalVolume* fAbsorberPV; // the absorber physical volume
G4VPhysicalVolume* fGapPV; // the gap physical volume
G4bool fCheckOverlaps; // option to activate checking of volumes overlaps
};
// inline functions
inline const G4VPhysicalVolume* B4DetectorConstruction::GetAbsorberPV() const {
return fAbsorberPV;
}
inline const G4VPhysicalVolume* B4DetectorConstruction::GetGapPV() const {
return fGapPV;
}
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#endif