Preliminary transmutation design on the concept of multi-beam accelerator driven system

The Multi-Beam Accelerator-Driven System (MB-ADS) offers improvements over single-beam designs by distributing proton beams across multiple target assemblies via beam-splitting technology, thereby achieving enhanced neutronic performance. This study performed a comparative burnup transmutation analysis between the proposed MB-ADS and conventional single-beam system, demonstrating that the MB-ADS exhibits a distinct advantage in flattening the core power distribution during the burnup process. Building on the MB-ADS design, this study further developed a transmutation scheme for minor actinides (MAs) and conducted a comprehensive burnup analysis. Key parameters—including reactivity, beam current, isotope masses, and the maximum assembly power peaking factor—were calculated during the transmutation burnup process. The results validated two distinct advantages of the MB-ADS design: superior burnup stability and high-efficiency transmutation capability.