The neutronics analysis of breeder blanket is presented to achieve the goal of fuel self-sufficiency of the tritium breeding ratio,TBR should be>1.

• 聚变堆包层的主要功能包括氚增殖、能量转换和辐射屏蔽等,包层中子学设计的主要原则是满足聚变堆的氚自持,一般要求包层氚增殖比TBR>1。