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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4NIELCalculator
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 30.05.2019
37 //
38 // Modifications:
39 //
40 // -------------------------------------------------------------
41
42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44
45 #include "G4NIELCalculator.hh"
46 #include "G4SystemOfUnits.hh"
47 #include "G4PhysicalConstants.hh"
48 #include "G4LossTableManager.hh"
49 #include "G4Material.hh"
50 #include "G4MaterialTable.hh"
51 #include "G4Step.hh"
52 #include "G4StepPoint.hh"
53 #include "G4VProcess.hh"
54 #include "G4Track.hh"
55 #include "Randomize.hh"
56 #include <vector>
57
58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
59
60 G4NIELCalculator::G4NIELCalculator(G4VEmModel* mod, G4int verb)
61 : fModel(mod), fVerbose(verb)
62 {
63 G4LossTableManager::Instance()->SetNIELCalculator(this);
64 if(fVerbose > 0) {
65 G4cout << "G4NIELCalculator: is created with the model <"
66 << fModel->GetName() << ">" << G4endl;
67 }
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
71
72 void G4NIELCalculator::AddEmModel(G4VEmModel* mod)
73 {
74 if(mod && mod != fModel) {
75 fModel = mod;
76 if(fVerbose > 0) {
77 G4cout << "G4NIELCalculator: new model <" << fModel->GetName()
78 << "> is added" << G4endl;
79 }
80 }
81 }
82
83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
84
85 void G4NIELCalculator::Initialise()
86 {}
87
88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
89
90 G4double G4NIELCalculator::ComputeNIEL(const G4Step* step)
91 {
92 G4double niel = 0.0;
93 G4double T2 = step->GetPostStepPoint()->GetKineticEnergy();
94 if(fModel && T2 > 0.) {
95 const G4Track* track = step->GetTrack();
96 const G4ParticleDefinition* part = track->GetParticleDefinition();
97 G4double length = step->GetStepLength();
98
99 if(length > 0.0 && part->GetPDGMass() > 100*CLHEP::MeV) {
100
101 // primary
102 G4double T1= step->GetPreStepPoint()->GetKineticEnergy();
103 G4double T = 0.5*(T1 + T2);
104 const G4MaterialCutsCouple* couple =
105 step->GetPreStepPoint()->GetMaterialCutsCouple();
106 niel = length*fModel->ComputeDEDXPerVolume(couple->GetMaterial(),part,T);
107 niel = std::min(niel, T1);
108 }
109 }
110 return niel;
111 }
112
113 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
114
115 G4double G4NIELCalculator::RecoilEnergy(const G4Step* step)
116 {
117 G4double erec = 0.0;
118 const std::vector<const G4Track*>* sec = step->GetSecondaryInCurrentStep();
119
120 if(sec) {
121 for(auto track : *sec) {
122 const G4ParticleDefinition* part = track->GetParticleDefinition();
123 if(part->IsGeneralIon()) {
124 erec += track->GetKineticEnergy();
125 }
126 }
127 }
128 return erec;
129 }
130
131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
132