Measurement of the neutron beam profile of the Back-n white neutron facility at CSNS with a Micromegas detector
Measurement of the neutron beam profile of the Back-n white neutron facility at CSNS with a Micromegas detector
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使用 Micromegas 探测器测量 CSNS Back-n 白中子设施的中子束剖面
DOI：
10.1016/j.nima.2020.163407
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发表时间：
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期刊：
影响因子：
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通讯作者：
Yang Li
中科院分区：
文献类型：
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作者：
Binbin Qi;Yang Li
背n白色中子束线是利用中国散斑中子源散斑靶的回流白色中子进行核数据测量的。一个Micromegas为基础的中子探测器有两个变种专门开发的束斑分布测量此束线。在这篇文章中，探测器的设计，制造和表征。给出了探测器性能测试结果，包括相对电子透过率、增益和增益均匀性以及中子束剖面重建能力。文中还介绍了对中子束斑分布的首次测量结果。
The Back-n white neutron beam line, which uses back-streaming white neutrons from the spallation target of the China Spallation Neutron Source, is used for nuclear data measurements. A Micromegas-based neutron detector with two variants was specially developed to measure the beam spot distribution for this beam line. In this article, the design, fabrication, and characterization of the detector are described. The results of the detector performance tests are presented, which include the relative electron transparency, the gain and the gain uniformity, and the neutron beam profile reconstruction capability. The result of the first measurement of the Back-n neutron beam spot distribution is also presented.