基于小尺度参考辐射的便携式伽玛射线剂量(率)仪校准方法及应用

钱易坤; 魏彪; 刘易鑫; 李文杰; 毛本将; 冯鹏

doi:10.11884/HPLPB201830.180091

基于小尺度参考辐射的便携式伽玛射线剂量(率)仪校准方法及应用

doi: 10.11884/HPLPB201830.180091

钱易坤^{1, 2,},
魏彪¹,
刘易鑫^{2, 3},
李文杰^{1, 2},
毛本将^2, ,,
冯鹏¹

1.
重庆大学光电技术及系统教育部重点实验室, 重庆 400044
2.
中国工程物理研究院核物理与化学研究所, 四川绵阳 621999
3.
清华大学工程物理系, 北京 100084

基金项目:

重庆大学中央高校基本科研业务费资助项目 2018CDGFGD0008

详细信息

作者简介:
钱易坤(1992—), 男，硕士研究生，从事辐射屏蔽防护研究; 626578507@qq.com

通讯作者:
毛本将(1966—), 男，研究员，从事电离辐射计量研究; gena@vip.sina.com

中图分类号: TL72
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- 被引次数: 0
出版历程
- 收稿日期: 2018-03-30
- 修回日期: 2018-06-02
- 刊出日期: 2018-09-15

Calibration method and application of portable gamma ray dose(rate) meters based on minitype reference radiation

Qian Yikun^{1, 2
,},
Wei Biao¹,
Liu Yixin^{2, 3},
Li Wenjie^{1, 2},
Mao Benjiang^{2
, ,},
Feng Peng¹

1.
Key Laboratory of Opto-electronics Technology & System of Ministry of Education, Chongqing University, Chongqing 400044, China
2.
Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621999, China
3.
Department of Engineering Physics, Tsinghua University, Beijing 100084, China

摘要

摘要: 针对现有伽玛射线剂量(率)测量仪器检定方法送检距离远、周期长、效率低的不足，中国工程物理研究院核物理与化学研究所采用基于样本仪表的机器预测方法，开展了基于小尺度参考辐射的便携式伽玛剂量(率)仪遂行校准技术研究工作。最终成功地研制了一套辐射防护用伽玛射线剂量(率)仪遂行校准装置，实现了测量标准不确定度不大于5%的良好结果。为伽玛空气比释动能量值的遂行定度提出了一条全新的技术思路，为便携式伽玛剂量(率)仪的现场和野外校准提供了一种全新的示范装备。
- 伽玛空气比释动能 /
- 小尺度参考辐射 /
- 遂行校准技术 /
- 辐射防护
Abstract: The existing calibration methods of gamma ray dose (rate) meters have the disadvantages of long distance, long period and low efficiency. To overcome these disadvantages, the Institute of Nuclear Physics and Chemistry of the Chinese Academy of Engineering Physics applies a machine learning prediction method using sample instruments to carry out a research on field calibration technology for portable gamma dose (rate) meters based on minitype reference radiation. A field calibration device for gamma dose (rate) meters for radiation protection was successfully developed, which achieved a satisfactory result with a measurement standard uncertainty of no more than 5%. This paper also presents a new method for determination of the conventional true value of gamma ray air kerma, and provides a novel model equipment for field calibration of the portable gamma dose (rate) meters.
- gamma-ray air kerma /
- minitype reference radiation /
- field calibration technology /
- radiation protection

HTML全文

图 1 小尺度参考辐射配置几何剖面图

Figure 1. Geometric profile of minitype reference radiation (MRR) calibration

下载: 全尺寸图片幻灯片

图 2 K_aij预测模型训练流程图

Figure 2. Flow chart of the prediction model training for K_aij

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图 3 MRR检验点处空气比释动能约定真值获取流程

Figure 3. Measuring flow chart of the air kerma conventional true value at the point of test in MRR

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图 4 基于MRR的伽玛剂量(率)仪遂行校准系统结构图

Figure 4. Structure of gamma-ray dose (rate) field calibration system based on MRR

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图 5 便携式伽玛剂量(率)仪遂行校准装置

Figure 5. Field calibration device for portable gamma ray dose (rate) meters

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图 6 伽玛剂量率仪校准流程图

Figure 6. Calibration flow chart of the gamma-ray dose (rate) meters

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图 7 仪器在MRR和SRR中校准因子的偏差对比

Figure 7. The comparison of calibration factors between MRR and SRR

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表 1 样本仪器信息

Table 1. Information of sample instruments

model	number	type of detector
BH3103A	4	NaI
SSM-1	3	GM
ATOMTEX	2	GM
FD3013B	1	NaI

下载: 导出CSV

参考文献(15)

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