Independent Source Distribution

Hi everyone,

I am trying to define a Neutron Independent source for a PWR pincell. I have defined the setting like this:
settings = openmc.Settings()

settings.batches = 10
settings.inactive = 5
settings.particles = 100
settings.export_to_xml()

source = openmc.IndependentSource()
source.space = openmc.stats.Box([-pitch/2, -pitch/2, -1], [pitch/2, pitch/2, 1], only_fissionable=True)
source.angle = openmc.stats.Isotropic()
settings.source = source

and when I run OpenMC, I get this error:

source = openmc.IndependentSource()

AttributeError: module ‘openmc’ has no attribute ‘IndependentSource’

Does anyone know how to fix this error?

thank you in Advance
Mary

IndependentSource was introduced in recent versions of OpenMC.

Perhaps you are running an older version of openmc which makes use of Source

You can check your version with openmc --version