摘要
以IAEA ADS基准题和日本京都大学KUCA实验装置为对象,对作者提出的次临界度测量方法[1]进行了更广泛的可行性验证。结果表明:对于局部区域功率变化引起的小扰动,通过改进表征中子注量率空间分布的特征参数,该方法仍然具有高的精度;而对于控制棒插入引起的大扰动,通过引入修正因子的方法,也仍然能准确测量次临界度。
In Refill, the authors proposed a method for ADS sub-criticality monitoring via the measurement of static in-core flux distribution and made a preliminary feasibility study. In this paper, further studies are performed against the IAEA ADS benchmark problem and Kyoto University KUCA critical assembly. Numerical results demonstrate that the proposed method works well for these two problems. Moreover, studies on the perturbed and rodded cases also indicate that the proposed method is capable to deal with small reactivity change caused by local power fluctuation and also large reactivity change caused by control rod insertion.
出处
《核科学与工程》
CSCD
北大核心
2008年第4期330-333,353,共5页
Nuclear Science and Engineering
基金
国家自然科学基金资助项目(10505014)
关键词
ADS
次临界度监测
中子注量率空间分布
控制棒插入
ADS
sub-criticality monitoring
spatial distribution of neutron flux
control rod insertion
