[Gate-users] Remove PositronAnnihilation

[Josh Knowland]

All -

I am trying to remove positron annihilation from a simulation but can't get it to work. I have used the following physics setup:

/gate/physics/addPhysicsList emstandard
/gate/physics/addProcess RadioactiveDecay
/gate/physics/removeProcess PositronAnnihilation e+
/gate/physics/removeProcess G4PositronAnnihilation e+

But I am still getting annihilation hits followed by gamma Compton scatter. I would like no annihilation photons to be generated.

I used the command "/gate/physics/processList Enabled" and it does not list annihilation as being enabled. Does the physics list hide it until initialization? If so, how can I disable it?

Thank you all,
Josh


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