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