Cross-section sensitivity and uncertainty analysis for fusion reactors (a review)

A review is presented of neutron cross-section sensitivity and uncertainty studies as applied to fusion reactor concepts. General observations are made concerning the applicability and potential value of such studies, as well as their current limitations. While literature is cited relative to sensitivities to D-D and D-T cross sections, as well as to temperature of the D-T reaction, these topics are excluded from discussion. After a brief review of cross-section and secondary-energy-distribution sensitivity theory, most emphasis is focused upon published studies of the TFTR, experimental power reactors, and a conceptual commercial reactor (NUWMAK). Salient results of these studies, as they pertain to cross-section measurement and evaluation requirements, are summarized. Lastly, some comments are made relative to cross-section data requirements in the 14 to 50 MeV region.