大面积闭气式正比计数器的主要性能测试

Main performance test of large area gas-sealed proportional counter

山西中辐核仪器有限责任公司自主研发生产了40~600 cm^2的各种型号的大面积闭气式正比计数器,选取其中有效面积为517 cm^2的一款进行测试,主要包括本底计数率、坪曲线、表面发射率响应、变异系数等物理指标。测试结果表明,相同测试环境及实验条件下,探测器在1620 V工作电压时,本底计数率为24.5 cps,表面发射率响应为50.4%,变异系数为0.85%等。

Shanxi Zhongfu Nuclear Instruments Co.,Ltd.(CIRNIC)has independently developed and produced various types of large area gas-sealed proportional counter of 40-600 cm^2.An experiment focusing on background count rate,plateau curve,surface emission rate response,coefficient of variation and other physical characters,on one of the device of which with 517 cm^2 effective area has shown that under the same testing environment and experimental conditions,background count rate is 24.5 cps,surface emission rate 50.4%,coefficient of variation 0.85%.