G4CrossSectionPairGG.hh

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00025 //
00026 // $Id$
00027 // $ GEANT4 tag $Name: not supported by cvs2svn $
00028 //
00029 //   Class G4CrossSectionPairGG
00030 //
00031 //     Extend a cross section to higher energies using
00032 //       G4GlauberGribovCrossSection at high energies.
00033 //       Smoothly join cross section sets by scaling GG at a given 
00034 //       transition energy to match the given low energy cross section.
00035 //
00036 //  Author:  Gunter Folger
00037 //           November 2010
00038 //
00039 #ifndef G4CrossSectionPairGG_h
00040 #define G4CrossSectionPairGG_h
00041 
00042 #include "globals.hh"
00043 #include "G4VCrossSectionDataSet.hh"
00044 #include "G4ParticleDefinition.hh"
00045 #include "G4GlauberGribovCrossSection.hh"
00046 #include <valarray>
00047 #include <iostream>
00048 
00049 class G4NistManager;
00050 
00051 class G4CrossSectionPairGG : public G4VCrossSectionDataSet
00052 {
00053   private:
00054    G4CrossSectionPairGG();
00055    G4CrossSectionPairGG(const G4CrossSectionPairGG&);
00056    G4CrossSectionPairGG& operator=(const G4CrossSectionPairGG&);
00057 
00058   public:
00059   
00060   G4CrossSectionPairGG(G4VCrossSectionDataSet * low,
00061 //                   G4VCrossSectionDataSet * high,
00062                      G4double Etransit);
00063                               
00064   virtual ~G4CrossSectionPairGG();
00065 
00066   virtual void CrossSectionDescription(std::ostream&) const;
00067 
00068   virtual
00069   G4bool IsElementApplicable(const G4DynamicParticle*, G4int Z, 
00070                              const G4Material* mat = 0);
00071 
00072   virtual
00073   G4double GetElementCrossSection(const G4DynamicParticle*, G4int Z,
00074                                   const G4Material* mat = 0);
00075 
00076   virtual void BuildPhysicsTable(const G4ParticleDefinition&);
00077   virtual void DumpPhysicsTable(const G4ParticleDefinition&);
00078   
00079   private:
00080 
00081     G4NistManager* NistMan;
00082     G4VCrossSectionDataSet * theLowX;   
00083     G4GlauberGribovCrossSection * theHighX;
00084     G4double ETransition;
00085     typedef std::valarray<G4double> XS_factors;
00086     typedef std::pair<G4ParticleDefinition *, XS_factors > ParticleXScale;
00087     std::vector<ParticleXScale> scale_factors;
00088 
00089 };
00090 
00091 #endif

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