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为满足中国科学院战略先导专项ADS散裂靶与反应堆耦合特性及影响验证实验研究项目的要求,使用临界计算程序MONK9A,根据目前临界实验装置设计准则和项目对中子能谱的要求,并结合现有的实验条件,进行了ADS验证临界实验装置铅介质堆芯物理设计。本工作主要从核燃料、燃料棒布置方式、中子源区、反射层与控制保护4个方面进行设计。在本次物理设计使用到的核燃料有两种,分别为富集度为20%的U3O8元件和富集度为90%的金属铀芯块元件。为了在同样堆芯尺寸下布置更多的燃料元件、减少堆芯泄露,燃料元件采取同心圆的排
In order to meet the requirements of the experimental project of the ADS spallation target and reactor coupling characteristics and influence verification of Chinese Academy of Sciences, the critical computing program MONK9A was used. According to the design requirements of the current critical experimental setup and the project requirements for neutron energy spectrum, Some experimental conditions, the ADS verification critical experimental device lead dielectric core physical design. This work is mainly from four aspects of nuclear fuel, fuel rod arrangement, neutron source area, reflective layer and control protection. There are two types of nuclear fuel used in this physical design: U3O8 with 20% enrichment and Uranium with 90% enrichment. In order to arrange more fuel elements at the same core size and reduce core leakage, the fuel elements take the form of concentric rows