| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
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19 // * technical work of the GEANT4 collaboratio
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24 // *******************************************
25 //
26 /// \file PrimaryGeneratorAction.cc
27 /// \brief Implementation of the PrimaryGenera
28 //
29 //
30 //....oooOO0OOooo........oooOO0OOooo........oo
31 //....oooOO0OOooo........oooOO0OOooo........oo
32
33 #include "PrimaryGeneratorAction.hh"
34
35 #include "G4Event.hh"
36 #include "G4ParticleDefinition.hh"
37 #include "G4ParticleTable.hh"
38 #include "G4PhysicalConstants.hh"
39 #include "G4SystemOfUnits.hh"
40 #include "Randomize.hh"
41
42 //....oooOO0OOooo........oooOO0OOooo........oo
43
44 PrimaryGeneratorAction::PrimaryGeneratorAction
45 {
46 G4int n_particle = 1;
47 fParticleGun = new G4ParticleGun(n_particle)
48
49 // default particle kinematic
50
51 G4ParticleDefinition* particle = G4ParticleT
52 fParticleGun->SetParticleDefinition(particle
53 fParticleGun->SetParticleMomentumDirection(G
54 fParticleGun->SetParticleEnergy(2 * MeV);
55 fParticleGun->SetParticlePosition(G4ThreeVec
56 }
57
58 //....oooOO0OOooo........oooOO0OOooo........oo
59
60 PrimaryGeneratorAction::~PrimaryGeneratorActio
61 {
62 delete fParticleGun;
63 }
64
65 //....oooOO0OOooo........oooOO0OOooo........oo
66
67 void PrimaryGeneratorAction::GeneratePrimaries
68 {
69 // this function is called at the begining o
70 //
71 // distribution uniform in solid angle
72 //
73 G4double cosTheta = 2 * G4UniformRand() - 1.
74 G4double sinTheta = std::sqrt(1. - cosTheta
75 G4double ux = sinTheta * std::cos(phi), uy =
76
77 fParticleGun->SetParticleMomentumDirection(G
78
79 fParticleGun->GeneratePrimaryVertex(anEvent)
80 }
81
82 //....oooOO0OOooo........oooOO0OOooo........oo
83