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openmc-dev / data

Collection of scripts for managing data for OpenMC
https://openmc.org/data
MIT License
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Quick questions regarding GND and the future of OpenMC data #37

Closed cjwyett closed 4 years ago

cjwyett commented 4 years ago

Hi,

Apologies for putting this here, I know it's not a discussion board.

You guys are using GND naming convention, I'm guessing this is in anticipation of working more closely with GND in the future?

If this is the case, what GND features could be the most advantageous to OpenMC? What will you need to work on to implement GND?

Cheers

shimwell commented 4 years ago

I guess we have incident neutron class with from_ace, from_endf from_hdf5 options so presumably we would need a from_gnd class. It looks much easier to parse than ace and endf so that is nice.

paulromano commented 4 years ago

Hi @cjwyett. OpenMC uses its own HDF5 format that is hierarchical in structure like GND. Much of my original hope was that OpenMC might be able to use GND directly. I'm not so sure at this point that will be the endpoint. However, as @Shimwell implied, being able to start from GND data and produce HDF5 data would be a good start through a from_gnd method. My sense is that the ecosystem hasn't really moved off of the ENDF-6 format yet. Once we get to a point where evaluators want to use the GND format to store data that can't be handled in ENDF-6, we'd probably see more of a shift toward GND and away from ENDF.

Anyway, let us know your thoughts, especially if you are actively involved in GND efforts.

cjwyett commented 4 years ago

Thanks for your replies and interesting observations.

Anyway, let us know your thoughts, especially if you are actively involved in GND efforts

I'm not involved in any nuclear data projects so unfortunately have no interesting thoughts of my own. It will be of course be a great relief to get away from those disgusting ENDF files. from_gnd sounds like a dream, I look forward to the day.

paulromano commented 4 years ago

Yes, hopefully one day we'll get there. @cjwyett If you have more questions, I'd encourage you to join the OpenMC user's group.