| Geant4 Cross Reference |
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25 // 25 //
26 << 26 //
27 #include "G4AdjointAlongStepWeightCorrection.h 27 #include "G4AdjointAlongStepWeightCorrection.hh"
28 <<
29 #include "G4AdjointCSManager.hh" <<
30 #include "G4ParticleChange.hh" <<
31 #include "G4ParticleDefinition.hh" <<
32 #include "G4Step.hh" 28 #include "G4Step.hh"
>> 29 #include "G4ParticleDefinition.hh"
33 #include "G4VParticleChange.hh" 30 #include "G4VParticleChange.hh"
>> 31 #include "G4AdjointCSManager.hh"
34 32
35 ////////////////////////////////////////////// 33 ///////////////////////////////////////////////////////
36 G4AdjointAlongStepWeightCorrection::G4AdjointA << 34 //
37 const G4String& name, G4ProcessType type) << 35
38 : G4VContinuousProcess(name, type) << 36 G4AdjointAlongStepWeightCorrection::G4AdjointAlongStepWeightCorrection(const G4String& name,
39 { << 37 G4ProcessType type): G4VContinuousProcess(name, type)
40 fParticleChange = new G4ParticleChange(); << 38 {fParticleChange = new G4ParticleChange();
41 fCSManager = G4AdjointCSManager::GetAdj << 39 currentMaterialIndex=0;
>> 40 preStepKinEnergy=1.;
>> 41 currentCouple=0;
42 } 42 }
43 43
44 ////////////////////////////////////////////// 44 ///////////////////////////////////////////////////////
>> 45 //
>> 46
45 G4AdjointAlongStepWeightCorrection::~G4Adjoint 47 G4AdjointAlongStepWeightCorrection::~G4AdjointAlongStepWeightCorrection()
46 { << 48 {delete fParticleChange;
47 delete fParticleChange; <<
48 } 49 }
49 <<
50 ////////////////////////////////////////////// 50 ///////////////////////////////////////////////////////
51 void G4AdjointAlongStepWeightCorrection::Proce << 51 //
52 std::ostream& out) const << 52 void G4AdjointAlongStepWeightCorrection::PreparePhysicsTable(
>> 53 const G4ParticleDefinition& )
53 { 54 {
54 out << << 55 ;
55 "Continuous processes act on adjoint particl <<
56 "weight during the adjoint reverse tracking. <<
57 "the adjoint cross sections are not scaled s <<
58 "section matches the total forward cross sec <<
59 "the total adjoint cross section is equal to <<
60 "is used and therefore this along step weigh <<
61 "in some cases (some energy ranges) the tota <<
62 "total adjoint cross section can be zero. In <<
63 "correction is needed and is given by exp(-( <<
64 "\n"; <<
65 } 56 }
>> 57 ///////////////////////////////////////////////////////
>> 58 //
66 59
>> 60 void G4AdjointAlongStepWeightCorrection::BuildPhysicsTable(const G4ParticleDefinition& )
>> 61 {;
>> 62 }
67 ////////////////////////////////////////////// 63 ///////////////////////////////////////////////////////
68 G4VParticleChange* G4AdjointAlongStepWeightCor << 64 //
69 const G4Track& track, const G4Step& step) << 65 G4VParticleChange* G4AdjointAlongStepWeightCorrection::AlongStepDoIt(const G4Track& track,
>> 66 const G4Step& step)
70 { 67 {
>> 68
71 fParticleChange->Initialize(track); 69 fParticleChange->Initialize(track);
72 << 70
73 // Get the actual (true) Step length 71 // Get the actual (true) Step length
>> 72 //----------------------------------
74 G4double length = step.GetStepLength(); 73 G4double length = step.GetStepLength();
>> 74
75 75
76 G4double Tkin = step.GetPostStepPoint()->Get 76 G4double Tkin = step.GetPostStepPoint()->GetKineticEnergy();
77 G4ParticleDefinition* thePartDef = const_cas << 77 G4ParticleDefinition* thePartDef= const_cast<G4ParticleDefinition*> (track.GetDynamicParticle()->GetDefinition());
78 track.GetDynamicParticle()->GetDefinition( << 78 G4double weight_correction=G4AdjointCSManager::GetAdjointCSManager()->GetContinuousWeightCorrection(thePartDef,
79 G4double weight_correction = fCSManager->Get << 79 preStepKinEnergy,Tkin, currentCouple,length);
80 thePartDef, fPreStepKinEnergy, Tkin, fCurr << 80
81 << 81
82 // Caution!!! << 82
83 // It is important to select the weight of t << 83
84 // weight and not the weight of the track, a << 84 //Caution!!!
85 // changed after having applied all the alon << 85 // It is important to select the weight of the post_step_point
86 G4double new_weight = << 86 // as the current weight and not the weight of the track, as t
87 weight_correction * step.GetPostStepPoint( << 87 // the weight of the track is changed after having applied all
88 << 88 // the along_step_do_it.
89 // The following test check for zero weight. << 89
90 // This happens after weight correction of g << 90 // G4double new_weight=weight_correction*track.GetWeight(); //old
91 // When the new weight is 0 it will be later << 91 G4double new_weight=weight_correction*step.GetPostStepPoint()->GetWeight();
92 // Therefore we put a lower limit of 1.e-300 << 92
93 if(new_weight == 0. || (new_weight <= 0. && <<
94 { <<
95 new_weight = 1.e-300; <<
96 } <<
97 93
>> 94
>> 95 //if (weight_correction >2.) new_weight=1.e-300;
>> 96
>> 97
>> 98 //The following test check for zero weight.
>> 99 //This happens after weight correction of gamma for photo electric effect.
>> 100 //When the new weight is 0 it will be later on consider as nan by G4.
>> 101 //Therefore we do put a lower limit of 1.e-300. for new_weight
>> 102 //Correction by L.Desorgher on 15 July 2009
>> 103 if (new_weight==0 || (new_weight<=0 && new_weight>0)){
>> 104 //G4cout<<new_weight<<'\t'<<weight_correction<<'\t'<<track.GetWeight()<<G4endl;
>> 105 new_weight=1.e-300;
>> 106 }
>> 107
>> 108 //G4cout<<new_weight<<'\t'<<weight_correction<<'\t'<<track.GetWeight()<<G4endl;
98 fParticleChange->SetParentWeightByProcess(fa 109 fParticleChange->SetParentWeightByProcess(false);
99 fParticleChange->SetSecondaryWeightByProcess 110 fParticleChange->SetSecondaryWeightByProcess(false);
100 fParticleChange->ProposeParentWeight(new_wei 111 fParticleChange->ProposeParentWeight(new_weight);
>> 112
101 113
102 return fParticleChange; 114 return fParticleChange;
103 } <<
104 115
>> 116 }
105 ////////////////////////////////////////////// 117 ///////////////////////////////////////////////////////
106 G4double G4AdjointAlongStepWeightCorrection::G << 118 //
107 const G4Track& track, G4double, G4double, G4 << 119 G4double G4AdjointAlongStepWeightCorrection::GetContinuousStepLimit(const G4Track& track,
108 { << 120 G4double , G4double , G4double& )
>> 121 {
>> 122 G4double x = DBL_MAX;
109 DefineMaterial(track.GetMaterialCutsCouple() 123 DefineMaterial(track.GetMaterialCutsCouple());
110 fPreStepKinEnergy = track.GetKineticEnergy() << 124 preStepKinEnergy = track.GetKineticEnergy();
111 return DBL_MAX; << 125 return x;
112 } 126 }
113 127