def GeneratePrimaries(self, event):
particles = self.particle_generator.generate()
for particle in particles:
pp = G4.G4PrimaryParticle()
pp.SetPDGcode(particle['pid'])
pp.SetMomentum(particle['momentum']['x'],
particle['momentum']['y'],
particle['momentum']['z'])
v = G4.G4PrimaryVertex()
v.SetPosition(particle['position']['x'], particle['position']['y'],
particle['position']['z'])
v.SetPrimary(pp)
event.AddPrimaryVertex(v)
# Write particleS information to the runtime configuration so the Truth
# processor can find it in order to output it
self.setMCInfo(particles)
