Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/binary_cascade/include/G4RKFieldIntegrator.hh

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 25 //
 26 #ifndef G4RKFieldIntegrator_h
 27 #define G4RKFieldIntegrator_h 1
 28 
 29 #include "G4FieldPropagation.hh"
 30 
 31 class G4RKFieldIntegrator : public G4FieldPropagation  
 32 {
 33 public:
 34    G4RKFieldIntegrator() {}
 35    G4RKFieldIntegrator(const G4RKFieldIntegrator &):G4FieldPropagation() {}
 36 
 37    ~G4RKFieldIntegrator() {}
 38 
 39    //Operators
 40    const G4RKFieldIntegrator & operator=(const G4RKFieldIntegrator &) {return *this;}
 41    
 42    G4bool operator==(const G4RKFieldIntegrator &) const {return 1;}
 43    G4bool 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
 54    G4double GetNeutronPotential(G4double radius);
 55    G4double GetNeutronPotential(G4ThreeVector &aPosition) {return GetNeutronPotential(aPosition.mag());}
 56    
 57    G4double GetProtonPotential(G4double radius);
 58    G4double GetProtonPotential(G4ThreeVector &aPosition)  {return GetProtonPotential(aPosition.mag());}
 59    
 60    G4double GetAntiprotonPotential(G4double radius);
 61    G4double GetAntiprotonPotential(G4ThreeVector &aPosition) {return GetAntiprotonPotential(aPosition.mag());};
 62 
 63    G4double GetKaonPotential(G4double radius);
 64    G4double GetKaonPotential(G4ThreeVector &aPosition) {return GetKaonPotential(aPosition.mag());}
 65    
 66    G4double GetPionPotential(G4double radius);
 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 
 89