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Z-Pinch惯性约束聚变是未来一种有竞争力的能源候选方案。Z-Pinch驱动的聚变裂变混合堆可高效地嬗变反应堆乏燃料中分离出的超铀元素。对美国Sandia国家实验室提出的In-Zinerater混合堆概念进行了中子学分析和数值模拟。在三维输运燃耗耦合程序MCORGS中增加了处理在线添加燃料与去除裂变产物的功能,实现了对液态燃料燃耗过程的模拟。增加6Li丰度和燃料初装量保持寿期初反应性不变,可以减缓寿期内反应性下降趋势。逐步增加包层内超铀元素装量,可以控制整个寿期内反应性基本恒定。聚变功率取20 MW,通过反应性控制,5年内包层能量放大倍数在160～180之间,氚增殖比在1.5～1.7之间,优于In-Zinerater基准设计方案。
Z-Pinch inertial confinement fusion is a promising future energy candidate. Z-Pinch-driven fusion fissile hybrid reactors efficiently transmute transuranics separated from reactor spent fuel. Neutronics analysis and numerical simulation were carried out on the concept of In-Zinerater hybrid reactor proposed by Sandia National Laboratory in the United States. The function of on-line adding fuel and removing fission products has been added in the MCORGS program to simulate the process of liquid fuel burn-up. Increasing the 6Li abundance and initial fuel loading to maintain the same initial reactivity during life can reduce the tendency of reactivity decline during the lifetime. Gradually increase the amount of transuranic elements in the cladding, it is possible to control the reactivity substantially constant over the lifetime. The fusion power is 20 MW, which is better than the In-Zinerater reference design through reactivity control. The cladding power magnification is between 160 and 180 within 5 years and the tritium multiplication ratio is between 1.5 and 1.7.