First measurements with new high-resolution gadolinium-GEM neutron detectors
First measurements with new high-resolution gadolinium-GEM neutron detectors
复制标题
使用新型高分辨率钆-GEM 中子探测器进行首次测量
DOI：
10.1088/1748-0221/11/05/p05011
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发表时间：
2015
影响因子：
1.3
通讯作者：
P. Thuiner
中科院分区：
文献类型：
--
作者：
D. Pfeiffer;F. Resnati;J. Birch;M. Etxegarai;R. Hall;C. Höglund;L. Hultman;I. Llamas;E. Oliveri;E. Oksanen;L. Robinson;L. Ropelewski;S. Schmidt;C. Streli;P. Thuiner
欧洲散裂源仪器，如大分子衍射仪(NMX)，需要出色的中子探测效率、高速率能力、时间分辨率和前所未有的数百微米量级的空间分辨率(在入射中子的大角度范围内)。对于这些仪器，固体转换器与微型模式气体探测器(MPGD)相结合是一个很有前途的选择。带有Gd转换器的宝石探测器在挪威IFE研究反应堆的冷中子束上进行了测试。μ的TPC分析被证明在10B转换器的情况下提高了空间分辨率，并扩展到基于Gd的探测器。首次成功地运行了Gd-GEM，在波长2？和位置分辨率优于250μm的情况下，测量效率为11.8%。
European Spallation Source instruments like the macromolecular diffractometer (NMX) require an excellent neutron detection efficiency, high-rate capabilities, time resolution, and an unprecedented spatial resolution in the order of a few hundred micrometers over a wide angular range of the incoming neutrons. For these instruments solid converters in combination with Micro Pattern Gaseous Detectors (MPGDs) are a promising option. A GEM detector with gadolinium converter was tested on a cold neutron beam at the IFE research reactor in Norway. The μTPC analysis, proven to improve the spatial resolution in the case of 10B converters, is extended to gadolinium based detectors. For the first time, a Gd-GEM was successfully operated to detect neutrons with a measured efficiency of 11.8% at a wavelength of 2 Åand a position resolution better than 250 μm.