用^(252)Cf源转换法刻度CFBR-Ⅱ堆功率

Power Scale of CFBR-Ⅱ Reactor Using ^(252)Cf Source Conversion Method

功率是CFBR-Ⅱ堆的重要基准数据之一,实验采用252Cf源转换法刻度功率。介绍了功率刻度的实验原理,并对测量结果进行了分析讨论。实验过程中充分考虑了能量"平响"、"点源"近似等因素对测量结果的影响,通过功率刻度获得了不同功率典型点对应的仪表指示,252Cf源转换法刻度功率的合成标准不确定为7%。

Power which is scaled using 252Cf source conversion method, is an important benchmark experimental date in CFBR-Ⅱ reactor. The principle of the experiment of scale was introduced, and the power of measurement results was discussed. The factors which mainly affect the results of measurement are energy “corresponding gently” and “point source” assumed correct, and they were fully considered in the experiment. Through the power scale experiment, different indications at corresponding typical power level were obtained. The synthetic standard uncertainty of using the 252Cf source conversion method to scale power is 7%.