CARR用U-Mo合金燃料的堆芯物理方案研究

Core Physics Scheme Study of U-Mo Alloy Fuel Applied in CARR

U-Mo合金燃料具有铀密度高、辐照稳定性好和后处理简单等优点,是未来研究堆燃料的理想选择。在保持中国先进研究堆(CARR)主体结构不变的基础上,使用合适的U-Mo合金燃料替换CARR现有燃料,进行堆芯方案初步研究。通过对中子注量率、循环长度等关键参数的对比分析,给出了较优的堆芯物理设计方案。该堆芯物理方案具有更好的设计参数,并可节省大量的燃料经费支出,提高了反应堆运营的经济性。

The U‐Mo alloy fuel has several advantages such as high U density ,good irradiation stability and simple reprocessing ,w hich is an ideal choice of future research reactor .No changing the main structure of China Advanced Research Reactor （CARR） , the core physics scheme study was performed based on the fuel change from U3Si2‐Al dispersion fuel to U‐Mo alloy fuel .Through comparison and analysis of neutron fluence rate and operation cycle ,the optimal core physics design scheme was given .There are better design parameters in the core scheme ,w hich could decrease the cost of fuel and increase the economy of reactor operation .