Question on KERMA data (regading MT=301 and MT=901) generation and energy-deposition normalization

Development
1

Hello,

I am using OpenMC depletion with CoupledOperator function. When I use the OpenMC HDF5 library based on ENDF/B-VII.1, I do not encounter any issue when using normalization_mode="energy-deposition of energy calculation.

But when I use a custom HDF5 library generated from our own ACE files at ASNR, using from_ace(), the depletion calculation fails with: “No energy reported from OpenMC tallies”.

I checked both my ACE files and the converted HDF5 files we have at ASNR, and they contain MT=301 heating but no MT=901 heating-local.

My questions are:

  1. Is the absence of MT=901 in HDF5 files generated via IncidentNeutron.from_ace() expected behavior?
  2. Does normalization_mode="energy-deposition" require MT=901 (heating-local) when photon_transport=False, even when valid MT=301 heating data are present?
  3. Is there a recommended workflow for ACE-derived libraries to support normalization_mode="energy-deposition", or is this mode intended only for libraries generated through the ENDF->NJOY->OpenMC workflow?

Thank you.