加速器驱动次临界反应堆次临界度测量方法研究  

Method study for ADS sub-criticality monitoring

作　　者：魏书成[1] 蒋校丰[1] 张少泓[1] 

机构地区：[1]上海交通大学核科学与工程学院,上海200240

出　　处：《核科学与工程》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)

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.

关 键 词：ADS 次临界度监测 中子注量率空间分布 控制棒插入 

分 类 号：TL326[核科学技术—核技术及应用]