| Geant4 Cross Reference |
1 // 1
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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 "DetectorConstruction.hh"
36
37 #include "G4Event.hh"
38 #include "G4Geantino.hh"
39 #include "G4IonTable.hh"
40 #include "G4ParticleDefinition.hh"
41 #include "G4ParticleTable.hh"
42 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh"
44 #include "Randomize.hh"
45
46 //....oooOO0OOooo........oooOO0OOooo........oo
47
48 PrimaryGeneratorAction::PrimaryGeneratorAction
49 {
50 G4int n_particle = 1;
51 fParticleGun = new G4ParticleGun(n_particle)
52
53 fParticleGun->SetParticleEnergy(0 * eV);
54 fParticleGun->SetParticlePosition(G4ThreeVec
55 fParticleGun->SetParticleMomentumDirection(G
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 // particle type
70 if (fParticleGun->GetParticleDefinition() ==
71 G4int Z = 95, A = 241;
72 G4double ionCharge = 0. * eplus;
73 G4double excitEnergy = 0. * keV;
74
75 G4ParticleDefinition* ion = G4IonTable::Ge
76 fParticleGun->SetParticleDefinition(ion);
77 fParticleGun->SetParticleCharge(ionCharge)
78 }
79
80 // vertex position uniform within the absorb
81 //
82 G4double Rmax = fDetector->GetAbsorRadius();
83 G4double Rmax2 = Rmax * Rmax;
84 G4double R2 = G4UniformRand() * Rmax2;
85 G4double R = std::sqrt(R2);
86
87 G4double phi = twopi * G4UniformRand();
88 G4double ux = R * std::cos(phi), uy = R * st
89 G4double uz = (fDetector->GetAbsorLength())
90
91 fParticleGun->SetParticlePosition(G4ThreeVec
92
93 // distribution uniform in solid angle
94 //
95 G4double cosTheta = 2 * G4UniformRand() - 1.
96 G4double sinTheta = std::sqrt(1. - cosTheta
97 phi = twopi * G4UniformRand();
98 G4double vx = sinTheta * std::cos(phi), vy =
99
100 fParticleGun->SetParticleMomentumDirection(G
101
102 fParticleGun->GeneratePrimaryVertex(anEvent)
103 }
104
105 //....oooOO0OOooo........oooOO0OOooo........oo
106