G4EqEMFieldWithSpin.hh

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// G4EqEMFieldWithSpin
//
// Class description:
//
// This is the right-hand side of equation of motion in a combined
// electric and magnetic field.

// Created: Chris Gong & Peter Gumplinger, 30.08.2007
// -------------------------------------------------------------------
#ifndef G4EQEMFIELDWITHSPIN_HH
#define G4EQEMFIELDWITHSPIN_HH

#include "G4ChargeState.hh"
#include "G4EquationOfMotion.hh"

class G4ElectroMagneticField;

class G4EqEMFieldWithSpin : public G4EquationOfMotion
{
  public:  // with description

    G4EqEMFieldWithSpin(G4ElectroMagneticField* emField );

    ~G4EqEMFieldWithSpin();

    void SetChargeMomentumMass(G4ChargeState particleCharge, // in e+ units
                               G4double MomentumXc,
                               G4double mass);

    void EvaluateRhsGivenB(const G4double y[],
                           const G4double Field[],
                                 G4double dydx[] ) const;
      // Given the value of the electromagnetic field, this function 
      // calculates the value of the derivative dydx.

    inline void SetAnomaly(G4double a) { anomaly = a; }
    inline G4double GetAnomaly() const { return anomaly; }
      // set/get magnetic anomaly

  private:

    G4double charge, mass, magMoment, spin;

    G4double fElectroMagCof;
    G4double fMassCof;

    G4double omegac, anomaly;
    G4double beta, gamma;

};

#endif