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25 // 25 //
26 // 26 //
27 //-------------------------------------------- 27 //---------------------------------------------------------------------------
28 // 28 //
29 // ClassName: G4NeutronKiller 29 // ClassName: G4NeutronKiller
30 // 30 //
31 // Description: The process to kill neutrons t 31 // Description: The process to kill neutrons to save CPU
32 // 32 //
33 // Author: V.Ivanchenko 26/09/00 for HARP 33 // Author: V.Ivanchenko 26/09/00 for HARP software
34 // 34 //
35 //-------------------------------------------- 35 //----------------------------------------------------------------------------
36 // 36 //
37 // Class description: 37 // Class description:
38 // 38 //
39 // G4NeutronKiller allows to remove unwanted n 39 // G4NeutronKiller allows to remove unwanted neutrons from simulation in
40 // order to improve CPU performance. There are 40 // order to improve CPU performance. There are two parameters:
41 // 41 //
42 // 1) low energy threshold for neutron kinetic 42 // 1) low energy threshold for neutron kinetic energy (default 0)
43 // 2) time limit for neutron track (default DB 43 // 2) time limit for neutron track (default DBL_MAX)
44 // 44 //
45 // These parameters can be changed via Set met 45 // These parameters can be changed via Set methods or by UI commands:
46 // /physics_engine/neutron/energyCut 46 // /physics_engine/neutron/energyCut
47 // /physics_engine/neutron/timeLimit 47 // /physics_engine/neutron/timeLimit
48 // 48 //
49 // If a neutron track is killed no energy depo 49 // If a neutron track is killed no energy deposition is added to the step
50 // 50 //
51 51
52 //....oooOO0OOooo........oooOO0OOooo........oo 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53 //....oooOO0OOooo........oooOO0OOooo........oo 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54 54
55 #ifndef NeutronKiller_h 55 #ifndef NeutronKiller_h
56 #define NeutronKiller_h 1 56 #define NeutronKiller_h 1
57 57
58 #include "globals.hh" 58 #include "globals.hh"
59 #include "G4VDiscreteProcess.hh" 59 #include "G4VDiscreteProcess.hh"
60 #include "G4ParticleDefinition.hh" 60 #include "G4ParticleDefinition.hh"
61 #include "G4Step.hh" 61 #include "G4Step.hh"
62 #include "G4Track.hh" 62 #include "G4Track.hh"
63 63
64 class G4NeutronKillerMessenger; 64 class G4NeutronKillerMessenger;
65 65
66 //....oooOO0OOooo........oooOO0OOooo........oo 66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67 67
68 class G4NeutronKiller : public G4VDiscreteProc 68 class G4NeutronKiller : public G4VDiscreteProcess
69 { 69 {
70 public: 70 public:
71 71
72 G4NeutronKiller(const G4String& processName 72 G4NeutronKiller(const G4String& processName = "nKiller",
73 G4ProcessType aType = fGeneral ); 73 G4ProcessType aType = fGeneral );
74 74
75 virtual ~G4NeutronKiller(); 75 virtual ~G4NeutronKiller();
76 76
77 virtual G4bool IsApplicable(const G4Particle 77 virtual G4bool IsApplicable(const G4ParticleDefinition&);
78 78
79 void SetTimeLimit(G4double); 79 void SetTimeLimit(G4double);
80 80
81 void SetKinEnergyLimit(G4double); 81 void SetKinEnergyLimit(G4double);
82 82
83 virtual G4double PostStepGetPhysicalInteract 83 virtual G4double PostStepGetPhysicalInteractionLength( const G4Track& track,
84 G4double previousStepSize, 84 G4double previousStepSize,
85 G4ForceCondition* condition); 85 G4ForceCondition* condition);
86 86
87 virtual G4VParticleChange* PostStepDoIt(cons 87 virtual G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
88 88
89 virtual G4double GetMeanFreePath(const G4Tra 89 virtual G4double GetMeanFreePath(const G4Track&, G4double,G4ForceCondition*);
90 90
91 private: 91 private:
92 92
93 // hide assignment operator as private 93 // hide assignment operator as private
94 G4NeutronKiller(const G4NeutronKiller&); 94 G4NeutronKiller(const G4NeutronKiller&);
95 G4NeutronKiller& operator = (const G4Neutron 95 G4NeutronKiller& operator = (const G4NeutronKiller &right);
96 96
97 G4double kinEnergyThreshold; 97 G4double kinEnergyThreshold;
98 G4double timeThreshold; 98 G4double timeThreshold;
99 99
100 G4NeutronKillerMessenger* pMess; 100 G4NeutronKillerMessenger* pMess;
101 }; 101 };
102 102
103 //....oooOO0OOooo........oooOO0OOooo........oo 103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
104 104
105 #endif 105 #endif
106 106
107 107