RRFM 2009 Transactions - European Nuclear Society

Conclusions
It has been shown that He to fission ratio and burn up vs. time for an AmU sample can be
managed in a quite wide range of values, including ones typical for fast reactors, in the JHR
reflector spectrum. Given the relative lack of data for high He production fuels and the
flexibility offered to experiments in the reflector to cover various compositions, the trade offs
between power level and He to fission ratio accuracy might actually be helpful to cover a
wider range of operation parameters. As a next step more detailed calculations are
necessary with HORUS, a code package dedicated to JHR. Additionally studies for in core
experiments will be carried out to check if the harder spectrum improves the results.
Acknowledgements
B. Pouchin and V. Brun-Magaud performed the initial spectra calculations with TRIPOLI and
ERANOS.
References
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