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25 // 25 //
26 << 26 // $Id: G4AdjointAlongStepWeightCorrection.cc,v 1.6 2010/09/03 14:33:21 gcosmo Exp $
>> 27 // GEANT4 tag $Name: geant4-09-04 $
>> 28 //
27 #include "G4AdjointAlongStepWeightCorrection.h 29 #include "G4AdjointAlongStepWeightCorrection.hh"
28 <<
29 #include "G4AdjointCSManager.hh" <<
30 #include "G4ParticleChange.hh" <<
31 #include "G4ParticleDefinition.hh" <<
32 #include "G4Step.hh" 30 #include "G4Step.hh"
>> 31 #include "G4ParticleDefinition.hh"
33 #include "G4VParticleChange.hh" 32 #include "G4VParticleChange.hh"
>> 33 #include "G4AdjointCSManager.hh"
34 34
35 ////////////////////////////////////////////// 35 ///////////////////////////////////////////////////////
36 G4AdjointAlongStepWeightCorrection::G4AdjointA << 36 //
37 const G4String& name, G4ProcessType type) << 37
38 : G4VContinuousProcess(name, type) << 38 G4AdjointAlongStepWeightCorrection::G4AdjointAlongStepWeightCorrection(const G4String& name,
39 { << 39 G4ProcessType type): G4VContinuousProcess(name, type)
40 fParticleChange = new G4ParticleChange(); << 40 {fParticleChange = new G4ParticleChange();
41 fCSManager = G4AdjointCSManager::GetAdj <<
42 } 41 }
43 42
44 ////////////////////////////////////////////// 43 ///////////////////////////////////////////////////////
>> 44 //
>> 45
45 G4AdjointAlongStepWeightCorrection::~G4Adjoint 46 G4AdjointAlongStepWeightCorrection::~G4AdjointAlongStepWeightCorrection()
46 { << 47 {;
47 delete fParticleChange; <<
48 } 48 }
49 <<
50 ////////////////////////////////////////////// 49 ///////////////////////////////////////////////////////
51 void G4AdjointAlongStepWeightCorrection::Proce << 50 //
52 std::ostream& out) const << 51 void G4AdjointAlongStepWeightCorrection::PreparePhysicsTable(
>> 52 const G4ParticleDefinition& )
53 { 53 {
54 out << << 54 ;
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 } 55 }
>> 56 ///////////////////////////////////////////////////////
>> 57 //
66 58
>> 59 void G4AdjointAlongStepWeightCorrection::BuildPhysicsTable(const G4ParticleDefinition& )
>> 60 {;
>> 61 }
67 ////////////////////////////////////////////// 62 ///////////////////////////////////////////////////////
68 G4VParticleChange* G4AdjointAlongStepWeightCor << 63 //
69 const G4Track& track, const G4Step& step) << 64 G4VParticleChange* G4AdjointAlongStepWeightCorrection::AlongStepDoIt(const G4Track& track,
>> 65 const G4Step& step)
70 { 66 {
>> 67
71 fParticleChange->Initialize(track); 68 fParticleChange->Initialize(track);
72 << 69
73 // Get the actual (true) Step length 70 // Get the actual (true) Step length
>> 71 //----------------------------------
74 G4double length = step.GetStepLength(); 72 G4double length = step.GetStepLength();
>> 73
75 74
76 G4double Tkin = step.GetPostStepPoint()->Get 75 G4double Tkin = step.GetPostStepPoint()->GetKineticEnergy();
77 G4ParticleDefinition* thePartDef = const_cas << 76 G4ParticleDefinition* thePartDef= const_cast<G4ParticleDefinition*> (track.GetDynamicParticle()->GetDefinition());
78 track.GetDynamicParticle()->GetDefinition( << 77 G4double weight_correction=G4AdjointCSManager::GetAdjointCSManager()->GetContinuousWeightCorrection(thePartDef,
79 G4double weight_correction = fCSManager->Get << 78 preStepKinEnergy,Tkin, currentCouple,length);
80 thePartDef, fPreStepKinEnergy, Tkin, fCurr << 79
81 << 80
82 // Caution!!! << 81
83 // It is important to select the weight of t << 82 G4double new_weight=weight_correction*track.GetWeight();
84 // weight and not the weight of the track, a << 83
85 // changed after having applied all the alon << 84 //if (weight_correction >2.) new_weight=1.e-300;
86 G4double new_weight = << 85
87 weight_correction * step.GetPostStepPoint( << 86
88 << 87 //The following test check for zero weight.
89 // The following test check for zero weight. << 88 //This happens after weight correction of gamma for photo electric effect.
90 // This happens after weight correction of g << 89 //When the new weight is 0 it will be later on consider as nan by G4.
91 // When the new weight is 0 it will be later << 90 //Therefore we do put a lower limit of 1.e-300. for new_weight
92 // Therefore we put a lower limit of 1.e-300 << 91 //Correction by L.Desorgher on 15 July 2009
93 if(new_weight == 0. || (new_weight <= 0. && << 92 if (new_weight==0 || (new_weight<=0 && new_weight>0)){
94 { << 93 //G4cout<<new_weight<<'\t'<<weight_correction<<'\t'<<track.GetWeight()<<G4endl;
95 new_weight = 1.e-300; << 94 new_weight=1.e-300;
96 } 95 }
97 << 96
>> 97 //G4cout<<new_weight<<'\t'<<weight_correction<<'\t'<<track.GetWeight()<<G4endl;
98 fParticleChange->SetParentWeightByProcess(fa 98 fParticleChange->SetParentWeightByProcess(false);
99 fParticleChange->SetSecondaryWeightByProcess 99 fParticleChange->SetSecondaryWeightByProcess(false);
100 fParticleChange->ProposeParentWeight(new_wei 100 fParticleChange->ProposeParentWeight(new_weight);
>> 101
101 102
102 return fParticleChange; 103 return fParticleChange;
103 } <<
104 104
>> 105 }
105 ////////////////////////////////////////////// 106 ///////////////////////////////////////////////////////
106 G4double G4AdjointAlongStepWeightCorrection::G << 107 //
107 const G4Track& track, G4double, G4double, G4 << 108 G4double G4AdjointAlongStepWeightCorrection::GetContinuousStepLimit(const G4Track& track,
108 { << 109 G4double , G4double , G4double& )
>> 110 {
>> 111 G4double x = DBL_MAX;
109 DefineMaterial(track.GetMaterialCutsCouple() 112 DefineMaterial(track.GetMaterialCutsCouple());
110 fPreStepKinEnergy = track.GetKineticEnergy() << 113 preStepKinEnergy = track.GetKineticEnergy();
111 return DBL_MAX; << 114 return x;
112 } 115 }
113 116