加速器驱动次临界快堆燃烧武器级钚的中子学研究

Neutronics of weapons-grade Pu burning in accelerator-driven sub-critical fast reactor

选取加速器驱动次临界快堆 (ADSFR)进行燃烧武器级钚研究。在堆芯内装载武器级钚 ,包层内装载 Th,选取液态钠为冷却剂。利用 L AHET程序模拟质子与靶核的相互作用 ;MCNP模拟次临界包层内 2 0 Me V以下的中子与材料核的相互作用 ;ORIGEN2利用 MCNP的输出提供的一群等效截面对堆芯进行燃耗计算。计算分析的结果表明 :满功率运行 30 0 d内 ,可以消耗掉 139.6 kg的 Pu,同时产生110 kg的 2 33U。可以得出结论 :考虑临界安全、功率密度和燃耗等因素 。

An accelerator driven sub critical fast reactor (ADSFR) was used to study the Pu burning of weapons grade. Weapons grade Pu was loaded into the core with Th in the blanket. Liquid sodium was used as the coolant. The neutronics was studied using LAHET to simulate the interaction between the protons and the nuclei of the target; MCNP to simulate interaction between neutrons with energies below 20 MeV and the nuclei of materials in the sub critical blanket; and ORIGEN2 for the multi region burnup cal...