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25 //
26 // This example is provided by the Geant4-DNA collaboration
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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 //
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35 //
36 /// \file PrimaryGeneratorAction.cc
37 /// \brief Implementation of the PrimaryGeneratorAction class
38
39 #include "PrimaryGeneratorAction.hh"
40
41 #include "DetectorConstruction.hh"
42
43 #include "G4RandomDirection.hh"
44 #include "G4RunManager.hh"
45 #include "G4StateManager.hh"
46 #include "G4SystemOfUnits.hh"
47
48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
49
50 PrimaryGeneratorAction::PrimaryGeneratorAction()
51 : G4VUserPrimaryGeneratorAction(), G4VStateDependent(), fParticleGun(0), fDetector(0)
52 {
53 fDetector = dynamic_cast<const DetectorConstruction*>(
54 G4RunManager::GetRunManager()->GetUserDetectorConstruction());
55 }
56
57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58
59 PrimaryGeneratorAction::~PrimaryGeneratorAction()
60 {
61 G4StateManager::GetStateManager()->DeregisterDependent(this);
62 if (fParticleGun) delete fParticleGun;
63 }
64
65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
66
67 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
68 {
69 fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));
70 fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
71 fParticleGun->GeneratePrimaryVertex(anEvent);
72 }
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 G4bool PrimaryGeneratorAction::Notify(G4ApplicationState requestedState)
77 {
78 if (requestedState == G4State_Idle) {
79 if (fParticleGun != 0) return true;
80
81 fParticleGun = new G4ParticleGun(1);
82
83 // Define default primary
84 G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("e-");
85 fParticleGun->SetParticleDefinition(particle);
86 fParticleGun->SetParticleEnergy(10 * eV);
87 fParticleGun->SetParticlePosition(G4ThreeVector());
88 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1, 0, 0));
89 }
90
91 return true;
92 }
93