论文部分内容阅读
为了实现反应堆堆芯中子注量率相对分布的测量,基于NaI探测器测量活化探测片放射性计数来计算相对中子注量率的方法,研制多通道中子注量率相对分布测量装置。该装置由PTMC12数据采集板卡、工控机和MNFDAS控制软件组成,可自动实现循环计数或非循环模式下的定时计数功能,测量结果以数据图形和文件形式保存。测试结果表明,该装置稳定性好,相对偏差在±1%之内,可保证反应堆内中子注量率相对分布实时长期稳定测量的要求。
In order to measure the relative distribution of the neutron fluence rate in the reactor core, a method of calculating the relative neutron fluence rate based on the NaI detector measuring the radioactivity count of the activated probing sheet was used to develop a relative distribution measurement device of multi-channel neutron fluence rate. The device is composed of PTMC12 data acquisition board, industrial computer and MNFDAS control software, which can automatically realize the timer counting function in cycle counting or non-cycle mode, and the measurement results are saved in the form of data graphics and files. The test results show that the device has good stability and relative deviation within ± 1%, which can ensure the real-time and long-term stable measurement of neutron flux in reactor.