arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2203.05910physics.ins-detphysics.app-ph
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小型Cosmic Ray μ子成像样机的研制和调试

Development and Commissioning of a Compact Cosmic Ray Muon Imaging Prototype

Xujia Luo, Quanxiao Wang, Kemian Qin, Heng Tian, Zhiqiang Fu, Yanwei Zhao, Zhongtao Shen, Hao Liu, Yuanyong Fu, Guorui Liu, Kaiqiang Yao, Xiangping Qian, Jian R… 展开作者

Xujia Luo, Quanxiao Wang, Kemian Qin, Heng Tian, Zhiqiang Fu, Yanwei Zhao, Zhongtao Shen, Hao Liu, Yuanyong Fu, Guorui Liu, Kaiqiang Yao, Xiangping Qian, Jian Rong, Weixiong Zhang, Xiaogang Luo, Chunxian Liu, Xiangsheng Tian, Minghai Yu, Feng Wu, Jingjing Chen, Juntao Liu, Zhiyi Liu

摘要:

由于μ子断层成像技术对高Z材料的成像能力,在海关检查走私核材料方面有一些潜在的应用。本文介绍了一种小型宇宙线μ子成像原型系统--兰州大学μ子成像系统(LUMIS),包括结构设计、组装、数据采集与分析、探测器性能测试、材料成像调试等。LUMIS的实验结果表明,在40.5cm的分离距离下,单个探测器层的探测效率约为98%,对垂直入射μ子的位置分辨率为2.5mm,角分辨率为8.73mrad。此外,图像重建软件开发的最接近点(PoCA)的基础上检测铅砖作为我们的目标。重建图像表明,图像中铅砖的轮廓与目标高度一致。随后,LUMIS区分不同的材料,如铅,铜,铁,铝,以及研究的能力。给出并讨论了高Z材料快速报警的响应时间下限。LUMIS原型的成功开发和调试为开发可用于许多应用的紧凑型CRM成像系统提供了技术和工艺方面的新解决方案选择。

英文摘要:

Due to the muon tomography's capability of imaging high Z materials, some potential applications have been reported on inspecting smuggled nuclear materials in customs. A compact Cosmic Ray Muons (CRM) imaging prototype, Lanzhou University Muon Imaging System (LUMIS), is comprehensively introduced in this paper including the structure design, assembly, data acquisition and analysis, detector performance test, and material imaging commissioning etc. Casted triangular prism plastic scintillators (PS) were coupled with Si-PMs for sensitive detector components in system. LUMIS's experimental results show that the detection efficiency of an individual detector layer is about 98%, the position resolution for vertical incident muons is 2.5 mm and the angle resolution is 8.73 mrad given a separation distance of 40.5 cm. Moreover, the image reconstruction software was developed based on the Point of Closest Approach (PoCA) to detect lead bricks as our target. The reconstructed images indicate that the profile of the lead bricks in the image is highly consistent with the target. Subsequently, the capability of LUMIS to distinguish different materials, such as Pb, Cu, Fe, and Al, was investigated as well. The lower limit of response time for rapidly alarming high-Z materials is also given and discussed. The successful development and commissioning of the LUMIS prototype have provided a new solution option in technology and craftsmanship for developing compact CRM imaging systems that can be used in many applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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