G4VMscModel

public G4VEmModel

General interface to msc models

class

public:

  explicit G4VMscModel(const G4String& nam);

  virtual ~G4VMscModel();

  virtual G4double ComputeTruePathLengthLimit(const G4Track& track,  
                          G4double& stepLimit);

  virtual G4double ComputeGeomPathLength(G4double truePathLength);

  virtual G4double ComputeTrueStepLength(G4double geomPathLength);

  virtual G4ThreeVector& SampleScattering(const G4ThreeVector&,
                      G4double safety);

  // empty method
  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                 const G4MaterialCutsCouple*,
                 const G4DynamicParticle*,
                 G4double tmin,
                 G4double tmax) override;

  //================================================================
  //  Set parameters of multiple scattering models
  //================================================================

  inline void SetStepLimitType(G4MscStepLimitType);

  inline void SetLateralDisplasmentFlag(G4bool val);

  inline void SetRangeFactor(G4double);

  inline void SetGeomFactor(G4double);

  inline void SetSkin(G4double);

  inline void SetSampleZ(G4bool);

  //================================================================
  //  Get/Set access to Physics Tables
  //================================================================

  inline G4VEnergyLossProcess* GetIonisation() const;

  inline void SetIonisation(G4VEnergyLossProcess*, 
                const G4ParticleDefinition* part);

  //================================================================
  //  Run time methods
  //================================================================

protected:

  // initialisation of the ParticleChange for the model
  // initialisation of interface with geometry and ionisation 
  G4ParticleChangeForMSC* 
  GetParticleChangeForMSC(const G4ParticleDefinition* p = nullptr);

  // convert true length to geometry length
  inline G4double ConvertTrueToGeom(G4double& tLength, G4double& gLength);

public:

  // compute safety
  inline G4double ComputeSafety(const G4ThreeVector& position, 
                G4double limit= DBL_MAX);

  // compute linear distance to a geometry boundary
  inline G4double ComputeGeomLimit(const G4Track&, G4double& presafety, 
                   G4double limit);

  inline G4double GetDEDX(const G4ParticleDefinition* part,
              G4double kineticEnergy,
              const G4MaterialCutsCouple* couple);

  inline G4double GetRange(const G4ParticleDefinition* part,
                           G4double kineticEnergy,
               const G4MaterialCutsCouple* couple);

  inline G4double GetEnergy(const G4ParticleDefinition* part,
                G4double range,
                const G4MaterialCutsCouple* couple);

  // G4MaterialCutsCouple should be defined before call to this method
  inline 
  G4double GetTransportMeanFreePath(const G4ParticleDefinition* part,
                    G4double kinEnergy);

private:

  //  hide assignment operator
  G4VMscModel & operator=(const  G4VMscModel &right) = delete;
  G4VMscModel(const  G4VMscModel&) = delete;