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G4RKFieldIntegrator.hh
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26 #ifndef G4RKFieldIntegrator_h
27 #define G4RKFieldIntegrator_h 1
28 
29 #include "G4FieldPropagation.hh"
30 
32 {
33 public:
36 
38 
39  //Operators
40  const G4RKFieldIntegrator & operator=(const G4RKFieldIntegrator &) {return *this;}
41 
42  int operator==(const G4RKFieldIntegrator &) const {return 1;}
43  int operator!=(const G4RKFieldIntegrator &) const {return 1;}
44 
45  // only theActive are propagated, nothing else
46  // only theSpectators define the field, nothing else
47  void Transport(G4KineticTrackVector &theActive, const G4KineticTrackVector &theSpectators, G4double theTimeStep);
48  G4double GetExcitationEnergy(G4int nHitNucleons, const G4KineticTrackVector &theParticles);
49 
50  // methods for calculating potentials for different types of particles
51  void Init(G4int z, G4int a) {theZ = z; theA = a;} // prepare potentials' functions
52 
53  // aPosition is relative to the nucleus center
56 
58  G4double GetProtonPotential(G4ThreeVector &aPosition) {return GetProtonPotential(aPosition.mag());}
59 
62 
64  G4double GetKaonPotential(G4ThreeVector &aPosition) {return GetKaonPotential(aPosition.mag());}
65 
67  G4double GetPionPotential(G4ThreeVector &aPosition) {return GetPionPotential(aPosition.mag());}
68 
69 private:
70  void Integrate(const G4KineticTrackVector & theActive, G4double theTimeStep);
71  G4double CalculateTotalEnergy(const G4KineticTrackVector& Barions);
72  G4double Erf(G4double X);
73 
74  // parameters to calculate potentials
75  G4int theA;
76  G4int theZ;
77 
78  // Vc(A, Z) = 1.44 * Z /(r0*(1 + std::pow(A, 1/3)))
79  // = colomb * Z / (1 + std::pow(A, 1/3))
80  static const G4double coulomb; // coulomb barier constant
81  static const G4double a_kaon; // kaon's potential constant
82  static const G4double a_pion; // pion's potential constant
83  static const G4double a_antiproton; // antiproton's potential constant
84 };
85 
86 #endif // G4RKFieldIntegrator_h
87 
88