How to record source from criticality model and use it for shielding and activation

[David Holler]

Hi all,

Apologies if I missed this topic somewhere. I'd like to run a criticality model in CSAS, record the source rate and distribution, then use it in MAVRIC and ORIGEN models for shielding and activation. 

I understand the source definition cards in MAVRIC and ORIGEN, but I was wondering if anyone could help me better understand passing a tally from CSAS to a MAVRIC / ORIGEN source. I'm assuming SCALE can record a 3D neutron source tally, but can that tally be stored in a file for use by MAVRIC or ORIGEN? 

Thank you for your time.

[William BJ J. Marshall]

KENO only knows anything about neutrons, so the only tally/source you can record is neutrons.  The fission source is specifically designed to be handed from CSAS to MAVRIC, as discussed in the criticality accident alarm sequence (CAAS) module in the SCALE learning library: https://www.ornl.gov/file/criticality-accident-alarm-system-caas-modeling-scale/display.

Other KENO-tallied sources, for example from the REACTION block aren't as readily shared between sequences.

This all derives from the fact that CSAS/KENO was originally designed as a k-eff calculating process for criticality safety applications.  Over the years more capabilities have been added as Monte Carlo radiation transport has become more wide spread.

B.J.