【摘 要】
：
本工作为约旦次临界装置开发了一系列实验测量系统,其中跳源法测量系统用于测量次临界装置的反应性。该实验测量系统包含置于堆芯外围的BF3中子计数管、主放大器、计算机数据
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本工作为约旦次临界装置开发了一系列实验测量系统,其中跳源法测量系统用于测量次临界装置的反应性。该实验测量系统包含置于堆芯外围的BF3中子计数管、主放大器、计算机数据采集及处理软件。软件部分通过操作数据采集卡来采集中子脉冲信号,并实时显示中子计数率曲线,当把源迅速地从堆内撤出时,开始记录中子计数的衰减曲线,当衰减到本底水平后利用下式得出反应性。
This work has developed a series of experimental measurement systems for Jordan subcritical devices, of which the journaled measurement system is used to measure the reactivity of subcritical devices. The experimental measurement system includes BF3 neutron counter tubes, main amplifiers, computer data acquisition and processing software placed on the periphery of the core. The software part collects the neutron pulse signal by operating the data acquisition card and displays the neutron count rate curve in real time. When the source is withdrawn from the reactor rapidly, the decay curve of the neutron count starts to be recorded. When the attenuation reaches the background level Reactivity was obtained using the following formula.
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