DetectorConstruction.hh

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#ifndef DetectorConstruction_h
#define DetectorConstruction_h 1

#include "G4VUserDetectorConstruction.hh"
#include "G4ThreeVector.hh"
#include "CLHEP/Units/SystemOfUnits.h"

class G4LogicalVolume;
class G4Material;
class G4GenericMessenger;


class DetectorConstruction : public G4VUserDetectorConstruction
{
  public:
    DetectorConstruction(
       const G4String& boxMaterialName = "G4_AIR",
       G4double boxHx = 40*CLHEP::cm, 
       G4double boxHy = 40*CLHEP::cm, 
       G4double boxHz = 40*CLHEP::cm,
       const G4String& worldMaterialName = "G4_AIR",
       G4double worldSizeFactor = 1.25);
    ~DetectorConstruction();

  public:
    // methods from base class 
    virtual G4VPhysicalVolume* Construct();

    // set methods
    void  SetBoxMaterial(const G4String& materialName);
    void  SetWorldMaterial(const G4String& materialName);
    void  SetBoxDimensions(G4ThreeVector dimensions);
    void  SetWorldSizeFactor(G4double factor);
                       
  private:
    void DefineCommands();

    G4GenericMessenger*  fMessenger; 
    G4String             fBoxMaterialName;
    G4String             fWorldMaterialName;
    G4ThreeVector        fBoxDimensions;
    G4double             fWorldSizeFactor;
    G4LogicalVolume*     fBoxVolume;  
    G4LogicalVolume*     fWorldVolume;  
};

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#endif