G4MicroElecElasticModel.hh

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// G4MicroElecElasticModel.hh, 2011/08/29 A.Valentin, M. Raine
//
// Based on the following publications
//      - Geant4 physics processes for microdosimetry simulation:
//      very low energy electromagnetic models for electrons in Si,
//       NIM B, vol. 288, pp. 66 - 73, 2012.
//
//
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#ifndef G4MicroElecElasticModel_h
#define G4MicroElecElasticModel_h 1
 
#include <map>
#include <CLHEP/Units/SystemOfUnits.h>
 
#include "G4MicroElecCrossSectionDataSet.hh"
#include "G4VEmModel.hh"
#include "G4Electron.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4LogLogInterpolation.hh"
#include "G4ProductionCutsTable.hh"
#include "G4NistManager.hh"
 
class G4MicroElecElasticModel : public G4VEmModel
{
 
public:
  G4MicroElecElasticModel(const G4ParticleDefinition* p = nullptr, 
                  const G4String& nam = "MicroElecElasticModel");
  virtual ~G4MicroElecElasticModel();
 
  void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
 
  G4double CrossSectionPerVolume(const G4Material* material,
                 const G4ParticleDefinition* p,
                 G4double ekin,
                 G4double emin,
                 G4double emax) override;
  
  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                 const G4MaterialCutsCouple*,
                 const G4DynamicParticle*,
                 G4double tmin,
                 G4double maxEnergy) override;
 
  inline void SetKillBelowThreshold (G4double threshold);        
  G4double GetKillBelowThreshold () { return killBelowEnergy; } 
 
  G4MicroElecElasticModel & operator=(const  G4MicroElecElasticModel &right) = delete;
  G4MicroElecElasticModel(const  G4MicroElecElasticModel&) = delete;
 
protected:
  G4ParticleChangeForGamma* fParticleChangeForGamma;
 
private:
  // Final state
  G4double Theta(G4ParticleDefinition * aParticleDefinition, G4double k, G4double integrDiff);
  G4double LinLinInterpolate(G4double e1, G4double e2, G4double e, G4double xs1, G4double xs2);
  G4double LogLogInterpolate(G4double e1, G4double e2, G4double e, G4double xs1, G4double xs2);   
  G4double LinLogInterpolate(G4double e1, G4double e2, G4double e, G4double xs1, G4double xs2);   
  G4double QuadInterpolator(G4double e11, 
                    G4double e12, 
                G4double e21, 
                G4double e22, 
                G4double x11,
                G4double x12, 
                G4double x21, 
                G4double x22, 
                G4double t1, 
                G4double t2, 
                G4double t, 
                G4double e);
  G4double RandomizeCosTheta(G4double k);
 
  // Cross section 
  typedef std::map<G4String,G4String,std::less<G4String> > MapFile;
  MapFile tableFile;
 
  typedef std::map<G4String,G4MicroElecCrossSectionDataSet*,std::less<G4String> > MapData;
  MapData tableData;
  
  typedef std::map<G4double, std::map<G4double, G4double> > TriDimensionMap;
  TriDimensionMap eDiffCrossSectionData;
  std::vector<G4double> eTdummyVec;
 
  typedef std::map<G4double, std::vector<G4double> > VecMap;
  VecMap eVecm;
 
  G4Material* nistSi;
  G4double killBelowEnergy;  
  G4double lowEnergyLimit;  
  G4double lowEnergyLimitOfModel;  
  G4double highEnergyLimit; 
  G4int verboseLevel;
  G4bool isInitialised;    
};
 
inline void G4MicroElecElasticModel::SetKillBelowThreshold (G4double threshold) 
{ 
    killBelowEnergy = threshold; 
    
    if (threshold < 5*CLHEP::eV)
    {
       G4Exception ("*** WARNING : the G4MicroElecElasticModel class is not validated below 5 eV !","",JustWarning,"") ;
       threshold = 5*CLHEP::eV;
    }
             
}        
 
 
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#endif