大面积地板污染监测仪设计  

A Design of GFM100 Large Area Floor Contamination Monitor

作　　者：郭强 乔莉[1,2] 任熠 王建飞[1] 常国荣 荆玥泓[1,2] 尚琰 GUO Qiang;QIAO Li;REN Yi;WANG Jian-fei;CHANG Guo-rong;JING Yue-hong;SHANG Yan(Shanxi Zhongfu Nuclear Instruments Co Ltd,Taiyuan 030006,China;China Institute for Radiation Protection,Taiyuan 030006,China)

机构地区：[1]山西中辐核仪器有限责任公司,太原030006 [2]中国辐射防护研究院,太原030006

出　　处：《核电子学与探测技术》2021年第3期378-381,共4页Nuclear Electronics & Detection Technology

摘　　要：为了解决测量涉核场所地面、路面及场地的α、β射线的探测问题,设计了一种由4块塑料闪烁体排列组成的大面积地板污染监测仪。探测器的总有效探测面积为2100cm^(2),每块探测器配有独立的电子学道盒,整个探头固定在一个基板上,可根据现场情况在5~20mm范围内手动调节,底部激光测速脚轮保证设备速度保持在一定的范围内,对待测区域α、β污染进行扫描测量。测试结果表明:α、β的探测效率均大于30%,α、β的最低可探测下限、相对固有误差均满足国标要求和计量检定规程的相关要求,经过短期和长期工作,探测效率无明显突变,工作性能稳定。In order to solve the problem of measuringα、β-rays on the ground,road surface and site of nuclear-related sites,a large area floor contamination monitor composed of four plastic scintillator arrays was designed.The total effective detection area of the detector is 2100 cm^(2),each detector is equipped with an independent electronic channel unit.The whole probe is fixed on a substrate and can be manually adjusted in the range of 5-20 mm according to the field situation.The bottom laser speed caster ensures that the speed of the equipment is kept within a certain range,and theα、β-rays in the measuring area is scanned and measured.The test results show that the detection efficiency ofα、β-rays is more than 30%.The minimum detectable limit and relative inherent error ofαandβmeet the requirements of national standard and metrological verification regulation.After short-term and long-term work,the detection efficiency has no obvious mutation,and the working performance is stable.

关 键 词：闪烁体 辐射监测 数据处理 

分 类 号：TL816[核科学技术—核技术及应用] X837[环境科学与工程—环境工程]