G4BGGPionElasticXS.hh

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//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4BGGPionElasticXS
//
// Author:        Vladimir Ivanchenko
//
// Creation date: 01.10.2003
// Modifications:
//
//
// Class Description:
//
// Wrapper of pi+ and pi- inelastic cross-sections using Barashenkov 
// parametersation below 100 GeV and Glauber-Gribov model above
//
// -------------------------------------------------------------------
//

#ifndef G4BGGPionElasticXS_h
#define G4BGGPionElasticXS_h

#include "globals.hh"
#include "G4VCrossSectionDataSet.hh"
#include "G4ParticleDefinition.hh"
#include "G4Threading.hh"

class G4ComponentGGHadronNucleusXsc;
class G4UPiNuclearCrossSection;
class G4HadronNucleonXsc;
class G4Material;
class G4Element;
class G4Isotope;
class G4Pow;

class G4BGGPionElasticXS : public G4VCrossSectionDataSet
{
public:

  explicit G4BGGPionElasticXS (const G4ParticleDefinition*);

  ~G4BGGPionElasticXS() final;
   
  G4bool IsElementApplicable(const G4DynamicParticle*, G4int Z,
           const G4Material*) final;

  G4bool IsIsoApplicable(const G4DynamicParticle*, G4int Z, G4int A,
       const G4Element* elm,
       const G4Material* mat) final;

  G4double GetElementCrossSection(const G4DynamicParticle*, G4int Z,
          const G4Material* mat) final;

  G4double GetIsoCrossSection(const G4DynamicParticle*, G4int Z, G4int A,  
            const G4Isotope* iso=nullptr,
            const G4Element* elm=nullptr,
            const G4Material* mat=nullptr) final;

  void BuildPhysicsTable(const G4ParticleDefinition&) final;

  void CrossSectionDescription(std::ostream&) const final;

private:

  G4double CoulombFactorPiPlus(G4double kinEnergy, G4int Z);

  G4double FactorPiMinus(G4double kinEnergy);

  G4BGGPionElasticXS & operator=(const G4BGGPionElasticXS &right);
  G4BGGPionElasticXS(const G4BGGPionElasticXS&);

  G4double fGlauberEnergy;  
  G4double fLowEnergy;
  G4double fLowestEnergy;

  static G4double theGlauberFacPiPlus[93];
  static G4double theCoulombFacPiPlus[93];
  static G4double theGlauberFacPiMinus[93];
  static G4double theCoulombFacPiMinus[93];
  static G4int    theA[93];

  const G4ParticleDefinition*     theProton;
  const G4ParticleDefinition*     thePiPlus;

  G4Pow*                          fG4pow;

  G4ComponentGGHadronNucleusXsc*  fGlauber;
  G4UPiNuclearCrossSection*       fPion;
  G4HadronNucleonXsc*             fHadron;
  G4bool                          isPiplus;
  G4bool                          isMaster;

#ifdef G4MULTITHREADED
  static G4Mutex pionElasticXSMutex;
#endif
};

#endif