Emit two kinds of particles at the same time

Particles, Track, Event, Run and Biasing
1

Dear all,
Can I emit two particles （electron and gamma） at the same time? How do I set it？

2

Not using G4ParticleGun. You could write your own primary generator action to do it (using, e.g., two calls to G4ParticleGun to create the two primaries). I’m not sure if GPS supports defining multiple sources that all act in every event.

3

See examples/extended/eventgenerator/particleGun : PrimaryGeneratorAction1
You can change the particle type for each primary