Greetings everyone!
could someone please guide me how to import phase space files created by GEANT4 into openmc as a customized source.
Once you have the Geant4-MCPL phase-space, read it in, in your settings.xml:
<source file="Geant4.mcpl" strength="1.0"/>
Not with the surf_source_read, that is for OpenMC HDF5 phase-spaces.
(This is somewhat confusing right now in OpenMC and hopefully can be amended at some point).
You will have to self normalize tally results (account for source particles in original problem, that source’s strength and the # particles ultimately written on the phase-space and started in OpenMC)