深度次临界刻棒电子学实现方法研究

Study on Implementation Method of Deep Subcritical Rod Worth Measurement Electronics

为实现深度次临界刻棒计算所需数据的有效采集,研究并设计了深度次临界刻棒电子学的总体架构及关键模块,通过堆上试验对关键模块特性进行了测试。结果表明,所设计的深度次临界刻棒电子学能够有效测量经过约200 m电缆传输后的探测器信号,脉冲信号波形宽度稳定,信噪比水平良好;所测得的高压坪特性曲线可以为探测器高压选取提供有效参考;所测得的甄别特性曲线稳定,能有效获取探测器信号中的中子成分。

In order to realize the effective acquisition of data required for deep subcritical rod worth calculation,the overall architecture and key modules of deep subcritical rod worth measurement electronics have been researched and designed.The characteristics of the key modules have been tested through reactor test.The results show that the designed deep subcritical rod worth measurement electronics can effectively measure the detector signal transmitted through about 200 m cable.The pulse signal has a stable waveform width and a proper signal-to-noise ratio.The measured high voltage plateau characteristic curve can provide an effective reference for the high voltage selection of the detector.The measured discrimination characteristic curve is stable,from which the neutron component in the detector signal can be effectively obtained.