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G4ILawCommonTruncatedExp.hh
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27 // $Id: $
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29 // ---------------------------------------------------------------
30 //
31 // G4ILawCommonTruncatedExp
32 //
33 // Class Description:
34 // A G4VBiasingInteractionLaw representing a truncated exponential
35 // law : an exponential law acting on [0,L] segment. This law is
36 // Common as it collects several process cross-sections, which sum
37 // is used to drive the law.
38 //
39 // ---------------------------------------------------------------
40 // Refactored version Oct. 2014 M. Verderi
41 // Initial version Nov. 2013 M. Verderi
42 
43 
44 #ifndef G4ILawCommonTruncatedExp_hh
45 #define G4ILawCommonTruncatedExp_hh 1
46 
48 #include "G4ILawTruncatedExp.hh"
49 #include "G4ThreeVector.hh"
50 
52 {
53 public:
54  G4ILawCommonTruncatedExp(G4String name = "expSharedForceInteractionLaw");
55  virtual ~G4ILawCommonTruncatedExp();
56 
57 public:
58  virtual G4bool IsSingular() const
59  {return fExpInteractionLaw.IsSingular();}
61  {return fExpInteractionLaw.IsEffectiveCrossSectionInfinite();}
62 private:
63  // -- sample the distribution:
64  virtual G4double SampleInteractionLength();
65  // -- move by true path length, this position becomes the new initial point
66  // -- in this case, cheat by returning DBL_MAX, to let operation proposing the
67  // -- step length in the alongGPIL
68  virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
69 public:
70  virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
72 
73 public:
74  void SetForceCrossSection( G4double xs ) { fExpInteractionLaw.SetForceCrossSection( xs ); }
75  void SetSelectedProcessXSfraction( G4double fXS ) { fSelectedProcessXSfraction = fXS; }
76  G4double SetSelectedProcessXSfraction() const { return fSelectedProcessXSfraction; }
77  void SetMaximumDistance(G4double d) { fExpInteractionLaw.SetMaximumDistance(d); }
78  G4double GetMaximumDistance() const { return fExpInteractionLaw.GetMaximumDistance(); }
79  G4double GetInteractionDistance() const { return fExpInteractionLaw.GetInteractionDistance(); }
80 
81 private:
82  G4ILawTruncatedExp fExpInteractionLaw;
83  G4double fSelectedProcessXSfraction;
84  G4double fInteractionDistance;
85 };
86 
87 #endif
const XML_Char * name
Definition: expat.h:151
void SetSelectedProcessXSfraction(G4double fXS)
virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const
void SetMaximumDistance(G4double d)
G4double GetInteractionDistance() const
G4ILawCommonTruncatedExp(G4String name="expSharedForceInteractionLaw")
G4double SetSelectedProcessXSfraction() const
virtual G4bool IsEffectiveCrossSectionInfinite() const
bool G4bool
Definition: G4Types.hh:79
G4double GetMaximumDistance() const
virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const
virtual G4bool IsSingular() const
G4double GetInteractionDistance() const
virtual G4bool IsEffectiveCrossSectionInfinite() const
virtual G4bool IsSingular() const
double G4double
Definition: G4Types.hh:76
void SetForceCrossSection(G4double xs)