首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >Neutron guide system for small-angle neutron scattering instruments of the Juelich Centre for Neutron Science at the FRM-II
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Neutron guide system for small-angle neutron scattering instruments of the Juelich Centre for Neutron Science at the FRM-II

机译:尤里希中子科学中心在FRM-II的小角中子散射仪器的中子导向系统

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摘要

Following the shut-down of the FRJ-2 research reactor in Julich a large part of the neutron scattering instrumentation operating there is currently being moved to the FRM-II research reactor in Garching-Miinchen. The installation of these instruments requires the design and set-up of new neutron guides with geometrical and optical features imposed by the positioning of the instruments in the neutron guide hall and by the foreseen significant improvement of the instrument performance. Particularly three SANS diffractometers require a special approach due to on one hand, their pre-determined size and on the other hand, the demanded neutron wavelength range. Expected characteristics of three neutron guides (currently under construction) optimized using VITESS and McStas simulation packages, namely the vertically "S-shaped" guides serving the KWS2 and KWS1 conventional SANS instruments and the horizontally "S-shaped" guide serving the focusing KWS3 instrument, will be reported on.
机译:在朱利希(Julich)的FRJ-2研究反应堆关闭之后,目前正在运行的大部分中子散射仪器正在转移到Garching-Miinchen的FRM-​​II研究反应堆。这些仪器的安装需要设计和设置新的具有几何和光学特征的中子导管,这是由于将仪器放置在中子导管室中以及可以预见的仪器性能的显着提高。特别地,由于一方面是它们的预定尺寸,另一方面是所需的中子波长范围,所以三个SANS衍射仪需要一种特殊的方法。使用VITESS和McStas模拟软件包优化的三个中子导管(目前正在建设中)的预期特性,即用于KWS2和KWS1常规SANS仪器的垂直“ S形”导管和用于聚焦KWS3仪器的水平“ S形”导管,将在上报告。

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