激光惯性约束聚变裂变混合能源包层中子学数值模拟

对三维输运与燃耗耦合程序MCORGS进行了适应性改造,并对利弗莫尔实验室提出的激光惯性约束聚变裂变混合能源(LIFE)概念进行了分析和改进。输运计算采用MCNP程序,燃耗计算采用ORIGENS程序,增加氚控制模块和功率控制模块。建立了与LIFE等价的以贫化铀为燃料、Be为中子增殖剂的包层方案,通过数值模拟验证了MCORGS程序的可靠性。针对Be资源短缺及冷却复杂问题,设计了以贫化铀为燃料、Pb为中子增殖剂的包层方案,包层能量放大了4倍,可在55a内稳定输出2 000 MWt功率。

Numerical Simulation on Blanket Neutronics of Laser Inertial Confinement Fusion-fission Energy

The adaption modifications of MCORGS, which is a couple package for 3D neutron transport code MCNP and burnup code ORIGENS, were made in order to analyze and improve the laser inertial confinement fusion-fission energy (LIFE) proposed by Lawrence Livermore National Laboratory. In the new package, a tritium control module and a thermal power control module were added. An equivalent neutronics model, which used depleted uranium as fuel and Be as neutron multiplier, was designed according to relative researches about LIFE. The numerical simulations validated the MCORGS code. For the lack of Be resources and the complexity in cooling Be multiplier, a new blanket design which used depleted uranium as fuel and Pb as the neutron multiplier was proposed. The energy multiplication in the new blanket is 4 and the  power of 2000 MWt can be maintained during 55 a.