利用BF3多柱谱仪测量临界装置中子能谱

摘要

研发了一种中子能谱测量装置——BF3多柱谱仪.对BF3多柱谱仪的工作原理、结构与性能,以及该探测系统的使用方法进行研究,并分析其可满足的实验要求.应用BF3多柱谱仪在临界装置上进行了中子能谱测量的实验,将实验测量结果与MCNP程序的理论计算结果进行了比较,两者符合较好,验证了该中子探测系统的性能.该BF3多柱谱仪可适用于低中子通量密度能谱测量、屏蔽实验、环境监督测量、实验大厅内部及周围环境中子场测量等多种工况.%A new type of neutron energy spectrum measurement apparatus (BF3 multicolumn spectrometer) was developed.The work principle,structure,performance and the use method of the BF3 multi-column spectrometer were studied and the satisfactory experiment requirement was analyzed.The BF3 multi-column spectrometer was applied at the critical assembly to conduct the neutron spectrum measurement experiment,and the measurement results were compared with the theoretical results of MCNP.Both results agreed well,and the performance of BF3 multi-column spectrometer was verified.This BF3 multi-column spectrometer can be used in many kinds of work such as measuring low neutron flux spectrum,shielding experiment,environment monitoring,neutron field measurement for inside and around the experimental hall and so on.