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25 //
26 // This example is provided by the Geant4-DNA collaboration
27 // Any report or published results obtained using the Geant4-DNA software
28 // shall cite the following Geant4-DNA collaboration publications:
29 // Med. Phys. 45 (2018) e722-e739
30 // Phys. Med. 31 (2015) 861-874
31 // Med. Phys. 37 (2010) 4692-4708
32 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
33 //
34 // The Geant4-DNA web site is available at http://geant4-dna.org
35 //
36 /// \file SteppingAction.cc
37 /// \brief Implementation of the SteppingAction class
38
39 #include "SteppingAction.hh"
40
41 #include "G4DNAGenericIonsManager.hh"
42 #include "G4Electron.hh"
43 #include "G4Gamma.hh"
44 #include "G4Proton.hh"
45 #include "G4RunManager.hh"
46
47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
48
49 SteppingAction::SteppingAction() : G4UserSteppingAction()
50 {
51 fSumOfStepLength = 0;
52 fLength = 0;
53 fDeltaE = -7;
54 fTotalStoppingPower = -8;
55 fTotalNumberOfSteps = 0;
56 fNumberOfSteps = 0;
57 fDepositedEnergy = 0;
58 }
59
60 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
61
62 SteppingAction::~SteppingAction() {}
63
64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
65
66 void SteppingAction::UserSteppingAction(const G4Step* step)
67 {
68 //*** WARNING: this line will kill all secondary e- and gammas ***
69
70 if (step->GetTrack()->GetDefinition() == G4Electron::ElectronDefinition()
71 && step->GetTrack()->GetTrackID() != 1)
72 step->GetTrack()->SetTrackStatus(fStopAndKill);
73
74 if (step->GetTrack()->GetDefinition() == G4Gamma::GammaDefinition())
75 step->GetTrack()->SetTrackStatus(fStopAndKill);
76
77 //
78
79 G4double charge = step->GetTrack()->GetDefinition()->GetPDGCharge();
80 G4double steplen = step->GetStepLength();
81 G4double edep = step->GetTotalEnergyDeposit();
82 G4int maxNumberOfSteps = -1;
83
84 G4DNAGenericIonsManager* instance;
85 instance = G4DNAGenericIonsManager::Instance();
86
87 if (
88 // ELECTRONS
89 (step->GetTrack()->GetTrackID() == 1
90 && step->GetTrack()->GetParticleDefinition() == G4Electron::ElectronDefinition())
91
92 ||
93
94 // PROTONS, HYDROGEN, ALPHA PARTICLES AND CHARGED STATES, IONS
95 (charge != -1. && step->GetTrack()->GetParticleDefinition() != G4Gamma::GammaDefinition())
96
97 )
98 {
99 fSumOfStepLength = fSumOfStepLength + steplen;
100 fDepositedEnergy = fDepositedEnergy + edep;
101 fNumberOfSteps = fNumberOfSteps + 1;
102
103 // G4cout << fSumOfStepLength << " " << fDepositedEnergy << " " << fNumberOfSteps << G4endl;
104
105 // ELECTRONS
106
107 if (step->GetTrack()->GetParticleDefinition() == G4Electron::ElectronDefinition())
108 maxNumberOfSteps = 1000;
109
110 // PROTONS, HYDROGEN
111
112 if (step->GetTrack()->GetParticleDefinition() == G4Proton::ProtonDefinition()
113 || step->GetTrack()->GetParticleDefinition() == instance->GetIon("hydrogen"))
114 maxNumberOfSteps = 1000;
115
116 // He0, He+, He2+
117
118 if (step->GetTrack()->GetParticleDefinition() == instance->GetIon("alpha++")
119 || step->GetTrack()->GetParticleDefinition() == instance->GetIon("alpha+")
120 || step->GetTrack()->GetParticleDefinition() == instance->GetIon("helium"))
121 maxNumberOfSteps = 10000;
122
123 // IONS (above helium)
124 if (charge > 2) maxNumberOfSteps = 10000;
125
126 // ALL
127
128 if (fNumberOfSteps > maxNumberOfSteps) {
129 fLength = fSumOfStepLength;
130
131 fTotalStoppingPower = fDepositedEnergy / fLength;
132 // G4cout << fTotalStoppingPower/(MeV/cm) << G4endl;
133
134 G4RunManager::GetRunManager()->AbortEvent();
135 fSumOfStepLength = 0.;
136 fDepositedEnergy = 0;
137 fNumberOfSteps = 0;
138 };
139 };
140 }
141