论文标题
基于双GEM的热中子探测器原型
Double-GEM based thermal neutron detector prototype
论文作者
论文摘要
氦3短缺和对中子科学的兴趣日益增长构成了开发新的中子检测技术的驱动因素。在这项工作中，我们报告了使用$^{10} $ b $ _4 $ c层作为中子转换器材料的双GEM检测器原型的开发。进行了GEANT4模拟，预测效率为3.14（10）％，在2.7 $σ$中与检测器在41.8 MEV热中子束进行测试时，在2.7 $σ$中与实验和分析检测效率一致。该检测器对位置敏感，配备了与电阻链连接的256+256条带读数，并获得了比3 mm更好的空间分辨率。随着时间的推移，增益稳定性也通过信号振幅的约0.2％H $^{ - 1} $进行测量。只有5个电子通道的简单数据采集就足以操作该检测器。
The Helium-3 shortage and the growing interest in neutron science constitute a driving factor in developing new neutron detection technologies. In this work, we report the development of a double-GEM detector prototype that uses a $^{10}$B$_4$C layer as a neutron converter material. GEANT4 simulations were performed predicting an efficiency of 3.14(10) %, agreeing within 2.7 $σ$ with the experimental and analytic detection efficiencies obtained by the detector when tested in a 41.8 meV thermal neutron beam. The detector is position sensitive, equipped with a 256+256 strip readout connected to resistive chains, and achieves a spatial resolution better than 3 mm. The gain stability over time was also measured with a fluctuation of about 0.2 %h$^{-1}$ of the signal amplitude. A simple data acquisition with only 5 electronic channels is sufficient to operate this detector.
