Rapidly tracking the position of a radiation source using multiple radiation spectroscopy detectors with maximum likelihood position estimation

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-04-29 DOI:10.1016/j.net.2025.103671

Hyundong Kim , Seung-Jae Lee

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引用次数: 0

Abstract

The location of a radiation source can be tracked by deriving the location from the number of measured radiation counts using multiple radiation spectroscopy detectors. However, this method we previously developed was found to produce errors as the area of radiation incident on the source and the radiation spectroscopy detector changed. In this study, a location tracking system using a radiation spectroscopy detector and maximum likelihood position estimation (MLPE) was developed to derive the exact location. The lookup table (LUT) of the MLPE was created through Geant4 Application of Tomographic Emission (GATE) simulation, and the experimental data were applied to the LUT created through simulation to estimate the location of the radiation source. As a result, the estimation was confirmed to be exceptionally accurate (97.07 ± 2.96 %). By applying the LUT created through simulation to the experiment, the LUT creation time was shortened and the convenience was improved. In addition, the measurement time could be shortened by using a radiation spectroscopy detector with excellent sensitivity as well as the ability to determine the location with excellent accuracy.

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利用最大似然位置估计的多辐射光谱探测器快速跟踪辐射源的位置

辐射源的位置可以通过使用多个辐射光谱探测器从测量的辐射计数中得出位置来跟踪。然而，我们先前开发的这种方法被发现会产生误差，因为辐射入射到源上的面积和辐射光谱探测器的变化。在本研究中，开发了一种利用辐射光谱探测器和最大似然位置估计（MLPE）的位置跟踪系统，以获得精确的位置。通过Geant4应用层析发射（GATE）仿真建立MLPE查找表（LUT），并将实验数据应用于仿真生成的LUT中，估算辐射源位置。结果表明，该方法具有极高的准确度（97.07±2.96%）。将仿真生成的LUT应用于实验，缩短了LUT创建时间，提高了便捷性。此外，使用灵敏度优异的辐射光谱探测器，可以缩短测量时间，并且能够以优异的精度确定位置。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development