Geant4  10.03.p02
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F05PrimaryGeneratorAction.cc
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26 // $Id: F05PrimaryGeneratorAction.cc 69563 2013-05-08 12:30:36Z gcosmo $
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30 //
31 
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34 
36 
38 
39 #include "G4Event.hh"
40 #include "G4ParticleGun.hh"
41 #include "G4ParticleTable.hh"
42 #include "G4ParticleDefinition.hh"
43 #include "Randomize.hh"
44 #include "G4SystemOfUnits.hh"
45 
46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
47 
49 {
50  G4int n_particle = 1;
51  fParticleGun = new G4ParticleGun(n_particle);
52 
54  G4ParticleDefinition* particle = particleTable->FindParticle("mu+");
55 
56  fParticleGun->SetParticleDefinition(particle);
57 }
58 
59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 
62 {
63  delete fParticleGun;
64 }
65 
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67 
69 {
70  //this function is called at the begining of event
71  //
72 
73  G4double Pmu = 517.6*MeV;
74  G4double mu_mass = 105.658*MeV;
75  G4double Emu = std::sqrt(Pmu*Pmu + mu_mass*mu_mass);
76  G4double Kmu = Emu - mu_mass;
77 
78  G4double x0 = -6.99*m;
79  G4double y0 = 0.00*m;
80  G4double z0 = 0.00*m;
81 
82  fParticleGun->SetParticleEnergy(Kmu);
83  fParticleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
84  fParticleGun->SetParticlePolarization(G4ThreeVector(0.,1.,0.));
85  fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,1.,0.));
86 
87  fParticleGun->GeneratePrimaryVertex(anEvent);
88 }
89 
90 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
Definition of the F05PrimaryGeneratorAction class.
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
CLHEP::Hep3Vector G4ThreeVector
void SetParticleMomentumDirection(G4ParticleMomentum aMomentumDirection)
int G4int
Definition: G4Types.hh:78
virtual void GeneratePrimaryVertex(G4Event *evt)
Definition of the F05DetectorConstruction class.
void SetParticlePolarization(G4ThreeVector aVal)
void SetParticlePosition(G4ThreeVector aPosition)
static constexpr double m
Definition: G4SIunits.hh:129
void SetParticleEnergy(G4double aKineticEnergy)
static G4ParticleTable * GetParticleTable()
static constexpr double MeV
Definition: G4SIunits.hh:214
double G4double
Definition: G4Types.hh:76
virtual void GeneratePrimaries(G4Event *)
void SetParticleDefinition(G4ParticleDefinition *aParticleDefinition)