| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
>> 26 // $Id: G4NeutronKiller.hh 69887 2013-05-17 08:17:02Z gcosmo $
26 // 27 //
27 //-------------------------------------------- 28 //---------------------------------------------------------------------------
28 // 29 //
29 // ClassName: G4NeutronKiller 30 // ClassName: G4NeutronKiller
30 // 31 //
31 // Description: The process to kill neutrons t 32 // Description: The process to kill neutrons to save CPU
32 // 33 //
33 // Author: V.Ivanchenko 26/09/00 for HARP 34 // Author: V.Ivanchenko 26/09/00 for HARP software
34 // 35 //
35 //-------------------------------------------- 36 //----------------------------------------------------------------------------
36 // 37 //
37 // Class description: 38 // Class description:
38 // 39 //
39 // G4NeutronKiller allows to remove unwanted n 40 // G4NeutronKiller allows to remove unwanted neutrons from simulation in
40 // order to improve CPU performance. There are 41 // order to improve CPU performance. There are two parameters:
41 // 42 //
42 // 1) low energy threshold for neutron kinetic 43 // 1) low energy threshold for neutron kinetic energy (default 0)
43 // 2) time limit for neutron track (default DB 44 // 2) time limit for neutron track (default DBL_MAX)
44 // 45 //
45 // These parameters can be changed via Set met 46 // These parameters can be changed via Set methods or by UI commands:
46 // /physics_engine/neutron/energyCut 47 // /physics_engine/neutron/energyCut
47 // /physics_engine/neutron/timeLimit 48 // /physics_engine/neutron/timeLimit
48 // 49 //
49 // If a neutron track is killed no energy depo 50 // If a neutron track is killed no energy deposition is added to the step
50 // 51 //
51 52
52 //....oooOO0OOooo........oooOO0OOooo........oo 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53 //....oooOO0OOooo........oooOO0OOooo........oo 54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54 55
55 #ifndef NeutronKiller_h 56 #ifndef NeutronKiller_h
56 #define NeutronKiller_h 1 57 #define NeutronKiller_h 1
57 58
58 #include "globals.hh" 59 #include "globals.hh"
59 #include "G4VDiscreteProcess.hh" 60 #include "G4VDiscreteProcess.hh"
60 #include "G4ParticleDefinition.hh" 61 #include "G4ParticleDefinition.hh"
61 #include "G4Step.hh" 62 #include "G4Step.hh"
62 #include "G4Track.hh" 63 #include "G4Track.hh"
63 64
64 class G4NeutronKillerMessenger; 65 class G4NeutronKillerMessenger;
65 66
66 //....oooOO0OOooo........oooOO0OOooo........oo 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67 68
68 class G4NeutronKiller : public G4VDiscreteProc 69 class G4NeutronKiller : public G4VDiscreteProcess
69 { 70 {
70 public: 71 public:
71 72
72 G4NeutronKiller(const G4String& processName 73 G4NeutronKiller(const G4String& processName = "nKiller",
73 G4ProcessType aType = fGeneral ); 74 G4ProcessType aType = fGeneral );
74 75
75 virtual ~G4NeutronKiller(); 76 virtual ~G4NeutronKiller();
76 77
77 virtual G4bool IsApplicable(const G4Particle << 78 G4bool IsApplicable(const G4ParticleDefinition&);
78 79
79 void SetTimeLimit(G4double); 80 void SetTimeLimit(G4double);
80 81
81 void SetKinEnergyLimit(G4double); 82 void SetKinEnergyLimit(G4double);
82 83
83 virtual G4double PostStepGetPhysicalInteract << 84 G4double PostStepGetPhysicalInteractionLength( const G4Track& track,
84 G4double previousStepSize, << 85 G4double previousStepSize,
85 G4ForceCondition* condition); << 86 G4ForceCondition* condition);
86 87
87 virtual G4VParticleChange* PostStepDoIt(cons << 88 G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
88 89
89 virtual G4double GetMeanFreePath(const G4Tra << 90 G4double GetMeanFreePath(const G4Track&, G4double,G4ForceCondition*);
90 91
91 private: 92 private:
92 93
93 // hide assignment operator as private 94 // hide assignment operator as private
94 G4NeutronKiller(const G4NeutronKiller&); 95 G4NeutronKiller(const G4NeutronKiller&);
95 G4NeutronKiller& operator = (const G4Neutron 96 G4NeutronKiller& operator = (const G4NeutronKiller &right);
96 97
97 G4double kinEnergyThreshold; 98 G4double kinEnergyThreshold;
98 G4double timeThreshold; 99 G4double timeThreshold;
99 100
100 G4NeutronKillerMessenger* pMess; 101 G4NeutronKillerMessenger* pMess;
101 }; 102 };
>> 103
>> 104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 105
>> 106 inline G4double G4NeutronKiller::PostStepGetPhysicalInteractionLength(
>> 107 const G4Track& aTrack,
>> 108 G4double, G4ForceCondition* condition)
>> 109 {
>> 110 // condition is set to "Not Forced"
>> 111 *condition = NotForced;
>> 112
>> 113 G4double limit = DBL_MAX;
>> 114 if(aTrack.GetGlobalTime() > timeThreshold ||
>> 115 aTrack.GetKineticEnergy() < kinEnergyThreshold) limit = 0.0;
>> 116 return limit;
>> 117 }
>> 118
>> 119 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 120
>> 121 inline G4double G4NeutronKiller::GetMeanFreePath(const G4Track&,G4double,
>> 122 G4ForceCondition*)
>> 123 {
>> 124 return DBL_MAX;
>> 125 }
>> 126
>> 127 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 128
>> 129 inline G4VParticleChange* G4NeutronKiller::PostStepDoIt(const G4Track& aTrack,
>> 130 const G4Step&)
>> 131 {
>> 132 pParticleChange->Initialize(aTrack);
>> 133 pParticleChange->ProposeTrackStatus(fStopAndKill);
>> 134 return pParticleChange;
>> 135 }
102 136
103 //....oooOO0OOooo........oooOO0OOooo........oo 137 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
104 138
105 #endif 139 #endif
106 140
107 141