Gabriele Cosmo
86 lines
3.9 KiB
C++
86 lines
3.9 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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#ifndef G4RKFieldIntegrator_h
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#define G4RKFieldIntegrator_h 1
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#include "G4FieldPropagation.hh"
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class G4RKFieldIntegrator : public G4FieldPropagation
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{
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public:
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G4RKFieldIntegrator() {}
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G4RKFieldIntegrator(const G4RKFieldIntegrator &):G4FieldPropagation() {}
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~G4RKFieldIntegrator() {}
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//Operators
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const G4RKFieldIntegrator & operator=(const G4RKFieldIntegrator &) {return *this;}
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int operator==(const G4RKFieldIntegrator &) const {return 1;}
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int operator!=(const G4RKFieldIntegrator &) const {return 1;}
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// only theActive are propagated, nothing else
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// only theSpectators define the field, nothing else
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void Transport(G4KineticTrackVector &theActive, const G4KineticTrackVector &theSpectators, G4double theTimeStep);
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G4double GetExcitationEnergy(G4int nHitNucleons, const G4KineticTrackVector &theParticles);
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// methods for calculating potentials for different types of particles
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void Init(G4int z, G4int a) {theZ = z; theA = a;} // prepare potentials' functions
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// aPosition is relative to the nucleus center
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G4double GetNeutronPotential(G4double radius);
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G4double GetNeutronPotential(G4ThreeVector &aPosition) {return GetNeutronPotential(aPosition.mag());}
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G4double GetProtonPotential(G4double radius);
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G4double GetProtonPotential(G4ThreeVector &aPosition) {return GetProtonPotential(aPosition.mag());}
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G4double GetAntiprotonPotential(G4double radius);
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G4double GetAntiprotonPotential(G4ThreeVector &aPosition) {return GetAntiprotonPotential(aPosition.mag());};
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G4double GetKaonPotential(G4double radius);
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G4double GetKaonPotential(G4ThreeVector &aPosition) {return GetKaonPotential(aPosition.mag());}
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G4double GetPionPotential(G4double radius);
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G4double GetPionPotential(G4ThreeVector &aPosition) {return GetPionPotential(aPosition.mag());}
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private:
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void Integrate(const G4KineticTrackVector & theActive, G4double theTimeStep);
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G4double CalculateTotalEnergy(const G4KineticTrackVector& Barions);
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G4double Erf(G4double X);
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// parameters to calculate potentials
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G4int theA;
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G4int theZ;
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// Vc(A, Z) = 1.44 * Z /(r0*(1 + std::pow(A, 1/3)))
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// = colomb * Z / (1 + std::pow(A, 1/3))
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static const G4double coulomb; // coulomb barier constant
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static const G4double a_kaon; // kaon's potential constant
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static const G4double a_pion; // pion's potential constant
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static const G4double a_antiproton; // antiproton's potential constant
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};
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#endif // G4RKFieldIntegrator_h
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