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#ifndef F04SimpleSolenoid_h
#define F04SimpleSolenoid_h 1

#include "G4LogicalVolume.hh"
#include "G4Tubs.hh"

#include "F04ElementField.hh"
#include "F04GlobalField.hh"

//  F04SimpleSolenoid implements a solenoid magnet with a constant 
//  cylindrical magnetic field in z-direction

class F04SimpleSolenoid : public F04ElementField
{
  public:

    ///  Default constructor.
    F04SimpleSolenoid(G4double, G4double, G4LogicalVolume*, G4ThreeVector);

    ///  Destructor.
    virtual ~F04SimpleSolenoid() {}

    ///  getLength() returns the length of the solenoid
    virtual G4double getLength() { return fieldLength; }

    ///  getWidth() returns the solenoid diameter
    virtual G4double getWidth() { return fieldRadius*2.0; }

    ///  getHeight() returns the solenoid diameter
    virtual G4double getHeight() { return fieldRadius*2.0; }

    /// setFringeZ(G4double) sets the solenoid fringe field z-length
    void setFringeZ(G4double z) { fringeZ = z; }

    /// getFringeZ() returns the solenoid fringe field z-length
    G4double getFringeZ() { return fringeZ; }

    ///  isOutside() returns true when outside the solenoid
    G4bool isOutside(G4ThreeVector& local) const; 

    /// isWithin() returns true when inside the solenoid
    G4bool isWithin(G4ThreeVector& local) const;

    ///  addFieldValue() adds the field for this solenoid into field[].
    ///  point[] is in global coordinates.
    void addFieldValue(const G4double point[4], G4double field[6]) const;

  private:

    G4double Bfield;

    G4double fringeZ;

    G4double fieldRadius;
    G4double fieldLength;

};

#endif