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#include "globals.hh"
#include "G4ios.hh"
#include <fstream>
#include <iomanip>
#include "G4CompositeEMDataSet.hh"
#include "G4ShellEMDataSet.hh"
#include "G4EMDataSet.hh"
#include "G4VEMDataSet.hh"
#include "G4VDataSetAlgorithm.hh"
#include "G4LogLogInterpolation.hh"
#include "G4PaulKCrossSection.hh"

G4PaulKCrossSection::G4PaulKCrossSection()
{ }

G4PaulKCrossSection::~G4PaulKCrossSection()
{ }

G4double G4PaulKCrossSection::CalculateKCrossSection(G4int zTarget,G4int zIncident, G4double energyIncident)
{
  
 G4String fileName;

 if (zIncident == 1)
   { fileName = "kcsPaul/kcs-";} 
  else
    {
      if (zIncident == 2)
	{ fileName = "kacsPaul/kacs-";}
	
    }

  
  G4VDataSetAlgorithm* interpolation = new G4LogLogInterpolation();

  G4VEMDataSet* dataSet;

  dataSet = new G4EMDataSet(zTarget,interpolation);
  
  dataSet->LoadData(fileName);
   

          G4double sigma = dataSet->FindValue(energyIncident/MeV) / barn;

	  return sigma;
}