Benchmark calculations for fusion blanket development

Abstract

Benchmark problems representing the leading fusion blanket concepts are presented. Benchmark calculations for self-cooled Li₁₇Pb₈₃ and helium-cooled blankets were performed. Multigroup data libraries generated from ENDF/B-IV and V files using the NJOY and AMPX processing codes with different weighting functions were used. The sensitivity of the TBR to group structure and weighting spectrum increases as the thickness and Li enrichment decrease with up to 20% discrepancies for thin natural Li₁₇Pb₈₃ blankets.