A vacuum-compatible photon-counting hybrid pixel detector has been installed in the ultra-high vacuum reflectometer of the four-crystal monochromator beamline of the Physikalisch-Technische Bundesanstalt at the electron storage ring BESSY II in Berlin, Germany. The setup is based on the PILATUS3 100K module. The detector can be used in the entire photon energy range accessible at the beamline from 1.75 keV to 10 keV. Complementing the already installed vacuum-compatible PILATUS 1M detector used for small-angle x-ray scattering (SAXS) and grazing incidence SAXS, it is possible to access larger scattering angles. The water-cooled module is located on the goniometer arm and can be positioned from -90° to 90° with respect to the incoming beam at a distance of about 200 mm from the sample. To perform absolute scattering experiments, the linearity, homogeneity, and angular dependence of the quantum efficiency, including their relative uncertainties, have been investigated. In addition, the first results of the performance in wide-angle x-ray scattering, x-ray diffraction, and x-ray reflectometry are presented.

中文翻译：

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真空兼容的光子计数混合像素探测器，用于在嫩 X 射线范围内进行广角 X 射线散射、X 射线衍射和 X 射线反射测量

真空兼容的光子计数混合像素探测器已安装在德国柏林电子存储环 BESSY II 的 Physikalisch-Technische Bundesanstalt 的四晶单色器光束线的超高真空反射计中。该设置基于 PILATUS3 100K 模块。该探测器可用于光束线可访问的整个光子能量范围，从 1.75 keV 到 10 keV。补充已安装的真空兼容 PILATUS 1M 探测器，用于小角度 X 射线散射 (SAXS) 和掠入射 SAXS，可以获得更大的散射角。水冷模块位于测角器臂上，可在距离样品约 200 mm 处相对于入射光束定位在 -90° 至 90° 之间。为了进行绝对散射实验，线性度，已经研究了量子效率的均匀性和角度依赖性，包括它们的相对不确定性。此外，还介绍了在广角 x 射线散射、x 射线衍射和 x 射线反射计中的性能的第一个结果。