include/Geant4/G4EqEMFieldWithSpin.hh

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0025 //
0026 // G4EqEMFieldWithSpin
0027 //
0028 // Class description:
0029 //
0030 // This is the right-hand side of equation of motion in a combined
0031 // electric and magnetic field.
0032
0033 // Created: Chris Gong & Peter Gumplinger, 30.08.2007
0034 // -------------------------------------------------------------------
0035 #ifndef G4EQEMFIELDWITHSPIN_HH
0036 #define G4EQEMFIELDWITHSPIN_HH
0037
0038 #include "G4ChargeState.hh"
0039 #include "G4EquationOfMotion.hh"
0040
0041 class G4ElectroMagneticField;
0042
0043 class G4EqEMFieldWithSpin : public G4EquationOfMotion
0044 {
0045   public:
0046
0047     G4EqEMFieldWithSpin(G4ElectroMagneticField* emField );
0048    ~G4EqEMFieldWithSpin() override;
0049
0050     void SetChargeMomentumMass(G4ChargeState particleCharge, // in e+ units
0051                                G4double MomentumXc,
0052                                G4double mass) override;
0053
0054     void EvaluateRhsGivenB(const G4double y[],
0055                            const G4double Field[],
0056                                  G4double dydx[] ) const override;
0057       // Given the value of the electromagnetic field, this function
0058       // calculates the value of the derivative dydx.
0059
0060     inline void SetAnomaly(G4double a) { anomaly = a; }
0061     inline G4double GetAnomaly() const { return anomaly; }
0062       // set/get magnetic anomaly
0063
0064   private:
0065
0066     G4double charge{0.}, mass{0.}, magMoment{0.}, spin{0.};
0067
0068     G4double fElectroMagCof{0.};
0069     G4double fMassCof{0.};
0070
0071     G4double omegac{0.}, anomaly{0.0011659208};
0072     G4double beta{0.}, gamma{0.};
0073 };
0074
0075 #endif