Geant4_10
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 // Initial version Nov. 2013 M. Verderi
41 
42 #ifndef G4ILawCommonTruncatedExp_hh
43 #define G4ILawCommonTruncatedExp_hh 1
44 
46 #include "G4ILawTruncatedExp.hh"
47 #include "G4ThreeVector.hh"
48 
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  // -- in this case, cheat by returning DBL_MAX, to let operation proposing the
65  // -- step length in the alongGPIL
66  virtual G4double SampleInteractionLength();
67  // -- move by true path length, this position becomes the new initial point
68  // -- in this case, cheat by returning DBL_MAX, to let operation proposing the
69  // -- step length in the alongGPIL
70  virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
71 public:
72  virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
74 
75 public:
76  void SetNumberOfSharing(G4int n) { fNumberOfSharing = n; }
77  G4int GetNumberOfSharing() const { return fNumberOfSharing; }
78  void SetForceCrossSection( G4double xs ) { fExpInteractionLaw.SetForceCrossSection( xs ); }
79  void reset();
80  void SetMaximumDistance(G4double d) { fExpInteractionLaw.SetMaximumDistance(d); }
81  G4double GetMaximumDistance() const {return fExpInteractionLaw.GetMaximumDistance();}
82  G4double GetInteractionDistance() const {return fExpInteractionLaw.GetInteractionDistance();}
83  void SetOperation( G4BOptnForceCommonTruncatedExp* operation) {fOperation = operation;}
84 
85 private:
86  G4ILawTruncatedExp fExpInteractionLaw;
87  //G4bool fIsSingular;
88  G4int fNumberOfSharing;
89  //G4bool fFirstInitializationCall;
90  G4bool fFirstUpdateCall;
91  G4bool fFirstSamplingCall;
92  G4double fInteractionDistance;
93  // TRICKY
95 };
96 
97 #endif
Float_t d
Definition: plot.C:237
virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const
const XML_Char * name
Definition: expat.h:151
void SetMaximumDistance(G4double d)
G4double GetInteractionDistance() const
G4ILawCommonTruncatedExp(G4String name="expSharedForceInteractionLaw")
int G4int
Definition: G4Types.hh:78
Char_t n[5]
void SetOperation(G4BOptnForceCommonTruncatedExp *operation)
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)