G4EmUtility.hh

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//
// Geant4 header G4EmUtility
//
// Author V.Ivanchenko 14.03.2022
//
// Utilities used at initialisation of EM physics
//
 
#ifndef G4EmUtility_h
#define G4EmUtility_h 1
 
#include <vector>
#include "globals.hh"
#include "G4Region.hh"
#include "G4PhysicsTable.hh"
#include "G4EmTableType.hh"
#include "G4ParticleDefinition.hh"
#include "G4VDiscreteProcess.hh"
#include "G4LossTableBuilder.hh"
#include "G4Material.hh"
#include "G4Element.hh"
#include "G4Isotope.hh"
#include "G4DataVector.hh"
#include "G4VEmModel.hh"
 
class G4EmUtility
{
public:
 
  // find G4Region pointer by name, by default no verbosity
  static const G4Region* FindRegion(const G4String& regionName,
                                    const G4int verbose = 0);
 
  // sample random G4Element for the case if cross section is
  // proportional to the number of electrons in an atom 
  static const G4Element* SampleRandomElement(const G4Material*);
 
  // sample random G4Isotope
  static const G4Isotope* SampleRandomIsotope(const G4Element*);
 
  // find energy of cross section maximum for all couples
  static std::vector<G4double>* FindCrossSectionMax(G4PhysicsTable*);
  static std::vector<G4double>* 
  FindCrossSectionMax(G4VDiscreteProcess*, const G4ParticleDefinition*);
 
  // fill structure describing more than one peak in cross sections
  static std::vector<G4TwoPeaksXS*>*
  FillPeaksStructure(G4PhysicsTable*, G4LossTableBuilder*);
 
  // model initialisation
  static void InitialiseElementSelectors(G4VEmModel*,
                                         const G4ParticleDefinition*,
                                         const G4DataVector& cuts,
                                         const G4double emin,
                                         const G4double emax);
};
 
#endif