CFBR-Ⅱ堆瞬发临界爆发脉冲波形参数测量

Measurements on Burst Waveform and Parameter under Super-Prompt Critical of CFBR-Ⅱ Reactor

波形测量是爆发脉冲实验研究中最关键的一项参数测量工作。对CFBR-Ⅱ堆瞬发临界时爆发脉冲的动态全过程(功率范围:100W～1000MW)进行了实时测量,进而获得超瞬发反应性ρ0、2kW时刻t2kW、峰功率、半高宽、峰时刻、峰前裂变数等脉冲特征参数。采用6只灵敏度不同的快响应闪烁探测器、1只硼电离室结合并行多通道高速数据采集设备,实现了CFBR-Ⅱ堆爆发脉冲时的脉冲全波形测量。

Burst waveform measurement is the most important parameter measurement in burst pulse experimental research. In order to obtain pulse characteristic parameters which including super prompt ac- tiveityρ0 and peak power, etc, the real time measurement was carried out for the whole dynamic duration when CFBR-Ⅱ takes bursts The measurement system consists of six scintillation detector, 10B ionization chamber and high-speed parallel data acquisition equipment and gets the dynamic (from hundreds watt to 109 watt) waveform, and is used for practical application in many bursts and tested well for stable performance and credibility.