
第35卷第1期 2015年3月
核科学与工程
Nuclear Science and Engineering
Vol.35No.1
Mar.2015
改进的源倍增方法测量控制棒价值
史永谦,李义国,鲁谨,洪景彦,吴小波,彭
(中国原子能科学研究院,北京102413)
摘要:该文给出了改进的源倍增方法测量控制梯价值的原理,在高富集度"U燃料元件转换为低高集度U的微型中子源零功率反应堆上进行研究,实验测量微型中子源零功率反应堆中心控制棒的价值,与周期方法相比在2%内符合,但减少了测量时间。该方法为今后加速器驱动次临界系统ADS的次临界在线监督提供一种可能的方法。
关键调:改进的源倍增方法;控制棒价值测量;低浓化的微型中子源零功率反应堆
中图分类号:TL375.2
文章标志码:A
文章编号:0258-0918(2015)01-0050-06
TheControlRodWorthMeasurementWithImproved
NeutronSource MultiplicationMethod
SHI Yong-qian,LI Yi-guo,LU Jin,HONG Jing-yan,WU Xiao-bo,PENGDan
(China Institute of Atomic Energy, Beijing 102413, Chins)
Abstract: Control rod worth measurement principle with improved neutron source multiplication (INSM) method is described and its worth measurement was completed on the miniature neutron source reactor by this method. Worth of control rod located in the center of the core is in accordance with the value measured by period method within the error 2%, but the measuring time is quite short. INSM can be used to monitor the sub-critical reactivity of accelerator driven sub-critical system (ADS) on line in the future
Key words: improved neutron source multiplication (INSM) method; control rod worth measurement; miniature neutron source reactor with low enrichment uranium core
次临界中子源倍增方法在反应堆易裂变系统的核临界安全就地测量1和反应堆物理启动的次临界外推临界实验中[2,3]是常用的方法。反应堆易裂变系统的核临界安全的就地测量用反应性来表征由易裂变材料和其他能影响
收稿日期:2014-04-16修回日期:2014-12-17
反应性材料组成的系统偏离临界状态的量β=
,是系统有效增殖系数,临界系统反 keft
应性为零,对于次临界系统,反应性的值是负的,表示系统次临界的程度。在核临界安全中,
作奢第介:史永谦(1940-),男,河南获加人,研究员,现从事核物理方向的研究 50