CAJ | 학술논문

本文设计了一加速器驱动的次临界系统（ADS）球床堆物理方案以研究其嬗变能力。利用MCNPX与ORIGEN的耦合程序，计算得到了ADS球床堆的有效增殖因子kef及功率随燃耗时间的变化情况。在加速器流强不变的情况下，可通过简单地更换燃料球实现次临界装置的kef及功率恒定。给出堆内功率密度沿轴向和径向的分布及次锕系核素（MA）嬗变情况。结果表明：对Pu的嬗变率较高，嬗变率为75％；对MA的嬗变效果不理想，嬗变率仅为5％；对237Np和241Am两种核素的嬗变效果较好，嬗变率分别为59％和89％。
본문설계료일가속기구동적차림계계통（ADS）구상퇴물리방안이연구기선변능력。이용MCNPX여ORIGEN적우합정서，계산득도료ADS구상퇴적유효증식인자kef급공솔수연모시간적변화정황。재가속기류강불변적정황하，가통과간단지경환연료구실현차림계장치적kef급공솔항정。급출퇴내공솔밀도연축향화경향적분포급차아계핵소（MA）선변정황。결과표명：대Pu적선변솔교고，선변솔위75％；대MA적선변효과불이상，선변솔부위5％；대237Np화241Am량충핵소적선변효과교호，선변솔분별위59％화89％。
A physical scheme design of pebble-bed reactor of accelerator-driven sub-critical system (ADS) was done to study the transmutation capability .The variation of effective multiplication factor kef and power with the burnup time was given by using the method of combination of MCNPX and ORIGEN .If the proton beam of accelerator is steady ,the kef and power are nearly invariable by replacing the spherical fuel elements . The distribution of power density at different radial and axial distances and the transmutation of minor actinides (MA ) were given . The result shows that the transmutation rate of Pu is higher and can reach 75% ,the transmutation rate of MA is lower and only can reach 5% .But the transmutation effect of 237 Np and 241 Am is much better ,the transmutation rate of them can reach 59% and 89% ,respectively .