Gun more than one particle ion

Particles, Track, Event, Run and Biasing
1

Dear users!
When gun more than one ion source, just the end ion source appears.
For example, when I want to make two ion sources like Co-60 and Cs-137 as follow:
/gun/particle ion
/gun/ion 27 60
/gun/ion 55 137
I see just the end one in the root file histogram.
Is it possible to see both ion sources in the same histogram?

2

Not with G4ParticleGun. As you’ll see from G4ParticleGun.hh, there is one single data member for the particle type. If you need more complex sources, you may want to investigate G4GeneralParticleSource (/gps/... macro commands) your you can write your own G4UserPrimaryGeneratorAction with whatever complexity you need.

3

You may wish to have a look at example: extended/eventgenerator/userPrimaryGenerator which even do not use G4ParticleGun.

4

Thank you all for your Reply