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27 /// \file GB04BOptnBremSplitting.cc
28 /// \brief Implementation of the GB04BOptnBrem
29
30 #include "GB04BOptnBremSplitting.hh"
31
32 #include "G4BiasingProcessInterface.hh"
33 #include "G4ParticleChangeForLoss.hh"
34
35 //....oooOO0OOooo........oooOO0OOooo........oo
36
37 GB04BOptnBremSplitting::GB04BOptnBremSplitting
38 : G4VBiasingOperation(name), fSplittingFacto
39 {}
40
41 //....oooOO0OOooo........oooOO0OOooo........oo
42
43 GB04BOptnBremSplitting::~GB04BOptnBremSplittin
44
45 G4VParticleChange*
46 GB04BOptnBremSplitting::ApplyFinalStateBiasing
47
48 {
49 // -- Collect brem. process (wrapped process
50 G4VParticleChange* processFinalState =
51 callingProcess->GetWrappedProcess()->PostS
52
53 // -- if no splitting requested, let the bre
54 // -- generated final state:
55 if (fSplittingFactor == 1) return processFin
56
57 // -- a special case here: the brem. process
58 // -- over the step due to energy loss by so
59 // -- returning an unchanged incoming electr
60 // -- We respect this correction, and if no
61 // -- case is happening:
62 if (processFinalState->GetNumberOfSecondarie
63
64 // -- Now start the biasing:
65 // -- - the electron state will be taken a
66 // -- process, hence the one stored in a
67 // -- This state will be stored in our f
68 // -- - the photon accompagnying the elect
69 // -- - we will then do fSplittingFactor -
70 // -- fSplittingFactor - 1 additionnal g
71 // -- fParticleChange object.
72
73 // -- We called the brem. process above. Its
74 // -- a "G4ParticleChangeForLoss" object. We
75 // -- methods of the concrete G4ParticleChan
76 G4ParticleChangeForLoss* actualParticleChang
77
78 fParticleChange.Initialize(*track);
79
80 // -- Store electron final state:
81 fParticleChange.ProposeTrackStatus(actualPar
82 fParticleChange.ProposeEnergy(actualParticle
83 fParticleChange.ProposeMomentumDirection(act
84
85 // -- Now deal with the gamma's:
86 // -- their common weight:
87 G4double gammaWeight = track->GetWeight() /
88
89 // -- inform we will have fSplittingFactor g
90 fParticleChange.SetNumberOfSecondaries(fSpli
91
92 // -- inform we take care of secondaries wei
93 // -- secondaries are by default given the p
94 fParticleChange.SetSecondaryWeightByProcess(
95
96 // -- Store first gamma:
97 G4Track* gammaTrack = actualParticleChange->
98 gammaTrack->SetWeight(gammaWeight);
99 fParticleChange.AddSecondary(gammaTrack);
100 // -- and clean-up the brem. process particl
101 actualParticleChange->Clear();
102
103 // -- now start the fSplittingFactor-1 calls
104 // -- related gamma:
105 G4int nCalls = 1;
106 while (nCalls < fSplittingFactor) {
107 // ( note: we don't need to cast to actual
108 // secondary particles are from base cla
109 processFinalState = callingProcess->GetWra
110 if (processFinalState->GetNumberOfSecondar
111 gammaTrack = processFinalState->GetSecon
112 gammaTrack->SetWeight(gammaWeight);
113 fParticleChange.AddSecondary(gammaTrack)
114 nCalls++;
115 }
116 // -- very rare special case: we ignore fo
117 else if (processFinalState->GetNumberOfSec
118 for (G4int i = 0; i < processFinalState-
119 delete processFinalState->GetSecondary
120 }
121 processFinalState->Clear();
122 }
123
124 // -- we are done:
125 return &fParticleChange;
126 }
127
128 //....oooOO0OOooo........oooOO0OOooo........oo
129