5/1 0.93624 WARNING: Particle 182006 had a negative distance to a lattice boundary. d = -4.00163

Am getting the above message. The geometry.xml file is attached. It is a model of the DMSR core.

Any help would be greatly appreciated.

Thanks,

Shawn Wachter

geometry.xml (47.4 KB)

Shawn – sorry for the delayed response on this. Can you tell us a little more about your run configuration:

What version of OpenMC are you using?
What cross sections are you using?

When I created a fake materials and settings file and use them along with your geometry.xml to do a quick run, I’m unable to reproduce any geometry error.

Best,
Paul