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25 //
26 // G4BOptnLeadingParticle
27 //
28 // Class Description:
29 //
30 // A G4VBiasingOperation that implements the s
31 // particle biasing scheme". It is of interest
32 // to estimate the flux leaking from the shiel
33 // It works as follows:
34 // - it is intented for hadronic inelastic int
35 // - at each interaction, are kept:
36 // - the most energetic particle (the lead
37 // - with unmodified weight
38 // - randomly one particle of each species
39 // - with this particle weight = n * p
40 // n is the number of particles of t
41 //
42 // Author: Marc Verderi, November 2019.
43 // -------------------------------------------
44
45 #ifndef G4BOptnLeadingParticle_hh
46 #define G4BOptnLeadingParticle_hh 1
47
48 #include "G4VBiasingOperation.hh"
49 #include "G4ParticleChange.hh"
50
51 class G4BOptnLeadingParticle : public G4VBiasi
52 {
53 public:
54
55 // -- Constructor :
56 G4BOptnLeadingParticle(const G4String& nam
57 // -- destructor:
58 virtual ~G4BOptnLeadingParticle();
59
60 // -- Methods from G4VBiasingOperation int
61 // ---------------------------------------
62 // -- Unused:
63 virtual const G4VBiasingInteractionLaw*
64 ProvideOccurenceBiasingInteractionLaw( con
65 G4F
66 // -- Used:
67 virtual G4VParticleChange*
68 ApplyFinalStateBiasing( const G4BiasingPro
69 const G4Track*,
70 const G4Step*,
71 G4bool& );
72 // -- Unused:
73 virtual G4double
74 DistanceToApplyOperation( const G4Track*,
75 virtual G4VParticleChange*
76 GenerateBiasingFinalState( const G4Track*,
77
78 // -- The possibility is given to further
79 // -- after the classical leading particle
80 // -- This is of interest when applying th
81 // -- the second one is alone in its categ
82 // -- this one randomly. This is also of i
83 // -- are alone in their category.
84 void SetFurtherKillingProbability( G4doubl
85 {
86 fRussianRouletteKillingProbability = p;
87 }
88 G4double GetFurtherKillingProbability() co
89 {
90 return fRussianRouletteKillingProbabilit
91 }
92
93 private:
94
95 // -- Particle change used to return the t
96 G4ParticleChange fParticleChange;
97 G4double fRussianRouletteKillingProbabilit
98 };
99
100 #endif
101