G4HadronicProcess.hh

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//
// GEANT4 Class header file
//
// G4HadronicProcess
//
// This is the top level Hadronic Process class
// The inelastic, elastic, capture, and fission processes
// should derive from this class
//
// original by H.P.Wellisch
// J.L. Chuma, TRIUMF, 10-Mar-1997
// Last modified: 04-Apr-1997
// 19-May-2008 V.Ivanchenko cleanup and added comments
// 05-Jul-2010 V.Ivanchenko cleanup commented lines
// 28-Jul-2012 M.Maire add function GetTargetDefinition() 
// 14-Sep-2012 Inherit from RestDiscrete, use subtype code (now in ctor) to
//      configure base-class
// 28-Sep-2012 M. Kelsey -- Undo inheritance change, keep new ctor
 
#ifndef G4HadronicProcess_h
#define G4HadronicProcess_h 1
 
#include "globals.hh"
#include "G4VDiscreteProcess.hh"
#include "G4EnergyRangeManager.hh"
#include "G4Nucleus.hh" 
#include "G4ReactionProduct.hh"
#include "G4HadronicProcessType.hh"
#include "G4CrossSectionDataStore.hh"
#include <vector>
 
class G4Track;
class G4Step;
class G4Element;
class G4ParticleChange;
class G4HadronicInteraction;
class G4HadronicProcessStore;
class G4VCrossSectionDataSet;
class G4VLeadingParticleBiasing;
 
class G4HadronicProcess : public G4VDiscreteProcess
{
public:
  G4HadronicProcess(const G4String& processName="Hadronic",
            G4ProcessType procType=fHadronic);    
 
  // Preferred signature for subclasses, specifying their subtype here
  G4HadronicProcess(const G4String& processName, 
            G4HadronicProcessType subType);    
 
  ~G4HadronicProcess() override;
 
  // register generator of secondaries
  void RegisterMe(G4HadronicInteraction* a);
 
  // get cross section per element
  G4double GetElementCrossSection(const G4DynamicParticle * part, 
                  const G4Element * elm, 
                  const G4Material* mat = nullptr);
 
  // obsolete method to get cross section per element
  inline
  G4double GetMicroscopicCrossSection(const G4DynamicParticle * part, 
                      const G4Element * elm, 
                      const G4Material* mat = nullptr)
  { return GetElementCrossSection(part, elm, mat); }
 
  // generic PostStepDoIt recommended for all derived classes
  G4VParticleChange* PostStepDoIt(const G4Track& aTrack, 
                  const G4Step& aStep) override;
 
  // initialisation of physics tables and G4HadronicProcessStore
  void PreparePhysicsTable(const G4ParticleDefinition&) override;
 
  // build physics tables and print out the configuration of the process
  void BuildPhysicsTable(const G4ParticleDefinition&) override;
 
  // dump physics tables 
  void DumpPhysicsTable(const G4ParticleDefinition& p);
 
  // add cross section data set
  void AddDataSet(G4VCrossSectionDataSet * aDataSet);
 
  // access to the list of hadronic interactions
  std::vector<G4HadronicInteraction*>& GetHadronicInteractionList();
 
  // access to an hadronic interaction by name
  G4HadronicInteraction* GetHadronicModel(const G4String&);
  
  // get inverse cross section per volume
  G4double GetMeanFreePath(const G4Track &aTrack, G4double, 
               G4ForceCondition *) override;
 
  // access to the target nucleus
  inline const G4Nucleus* GetTargetNucleus() const
  { return &targetNucleus; }
  
  //  G4ParticleDefinition* GetTargetDefinition();
  inline const G4Isotope* GetTargetIsotope()
  { return targetNucleus.GetIsotope(); }
  
  void ProcessDescription(std::ostream& outFile) const override;
 
protected:    
 
  // generic method to choose secondary generator 
  // recommended for all derived classes
  inline G4HadronicInteraction* ChooseHadronicInteraction(
      const G4HadProjectile & aHadProjectile, G4Nucleus& aTargetNucleus,
      const G4Material* aMaterial, const G4Element* anElement)
  { return theEnergyRangeManager.GetHadronicInteraction(aHadProjectile, 
                                                        aTargetNucleus,
                            aMaterial,anElement);
  }
 
  // access to the target nucleus
  inline G4Nucleus* GetTargetNucleusPointer() 
  { return &targetNucleus; }
  
public:
 
  // scale cross section
  void BiasCrossSectionByFactor(G4double aScale);
  void MultiplyCrossSectionBy(G4double factor);
  inline G4double CrossSectionFactor() const
  { return aScaleFactor; }
 
  // Integral option 
  inline void SetIntegral(G4bool val)
  { useIntegralXS = val; }
 
  // Energy-momentum non-conservation limits and reporting
  inline void SetEpReportLevel(G4int level)
  { epReportLevel = level; }
 
  inline void SetEnergyMomentumCheckLevels(G4double relativeLevel, G4double absoluteLevel)
  { epCheckLevels.first = relativeLevel;
    epCheckLevels.second = absoluteLevel;
    levelsSetByProcess = true;
  }
 
  inline std::pair<G4double, G4double> GetEnergyMomentumCheckLevels() const
  { return epCheckLevels; }
 
  // access to the cross section data store
  inline G4CrossSectionDataStore* GetCrossSectionDataStore()
    {return theCrossSectionDataStore;}
 
protected:
 
  void DumpState(const G4Track&, const G4String&, G4ExceptionDescription&);
            
  // access to the chosen generator
  inline G4HadronicInteraction* GetHadronicInteraction() const
  { return theInteraction; }
    
  // access to the cross section data set
  inline G4double GetLastCrossSection() 
  { return theLastCrossSection; }
 
  // fill result
  void FillResult(G4HadFinalState* aR, const G4Track& aT);
 
  // Check the result for catastrophic energy non-conservation
  G4HadFinalState* CheckResult(const G4HadProjectile& thePro,
                   const G4Nucleus& targetNucleus, 
                   G4HadFinalState* result);
 
  // Check 4-momentum balance
  void CheckEnergyMomentumConservation(const G4Track&, const G4Nucleus&);
 
private:
 
  void InitialiseLocal();
 
  G4double XBiasSurvivalProbability();
  G4double XBiasSecondaryWeight();
 
  // hide assignment operator as private 
  G4HadronicProcess& operator=(const G4HadronicProcess& right);
  G4HadronicProcess(const G4HadronicProcess&);
 
  // Set E/p conservation check levels from environment variables
  void GetEnergyMomentumCheckEnvvars();
 
protected:
 
  G4HadProjectile thePro;
 
  G4ParticleChange* theTotalResult; 
 
  G4double fWeight;
 
  G4int epReportLevel;
 
private:
    
  G4EnergyRangeManager theEnergyRangeManager;
    
  G4HadronicInteraction* theInteraction;
 
  G4CrossSectionDataStore* theCrossSectionDataStore;
 
  G4HadronicProcessStore* theProcessStore;
     
  G4Nucleus targetNucleus;
 
  bool G4HadronicProcess_debug_flag;
 
  bool useIntegralXS;
 
  G4int nMatWarn;
  G4int nKaonWarn;
 
  G4int nICelectrons;
 
  G4int idxIC;
 
  // Energy-momentum checking
  std::pair<G4double, G4double> epCheckLevels;
  G4bool levelsSetByProcess;
 
  std::vector<G4VLeadingParticleBiasing*> theBias;
  
  G4double theInitialNumberOfInteractionLength;   
 
  G4double aScaleFactor;
  G4double theLastCrossSection;
};
 
#endif