One of the major limitations of X-ray Absorption Spectroscopy (XAS) experiment at synchrotron facilities is the performance of the detectors. In order to be able to measure more challenging samples and to cope with the very high photon flux of the current and future (diffraction limited) sources, technological developments of detectors are necessary. This article reports on the construction and characterization of a monolithic 19-channel germanium detector demonstrator fitted with CMOS preamplifiers. The detector was characterized in the laboratory with radioactive sources and with the X-ray synchrotron beam. Characteristics such as energy resolution, linearity, counting rate capabilities, and stability of the detector were thoroughly evaluated. In addition, it was proved that by using an advanced pulse processor such as Xspress4, it was possible to improve the performance of the detector system by eliminating the crosstalk among channels and by suppressing the charge-shared events. This work could pave the way to enhanced germanium fluorescence detectors for high-throughput X-ray spectroscopy.

中文翻译：

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六边形垫多通道锗 X 射线光谱探测器演示器：综合表征

在同步加速器设施中进行 X 射线吸收光谱 (XAS) 实验的主要限制之一是探测器的性能。为了能够测量更具挑战性的样品并应对当前和未来（衍射受限）源的非常高的光子通量，探测器的技术发展是必要的。本文报告了配备 CMOS 前置放大器的单片 19 通道锗探测器演示器的构造和表征。该探测器在实验室中用放射源和 X 射线同步加速器束进行了表征。对能量分辨率、线性度、计数率能力和检测器稳定性等特性进行了全面评估。此外，事实证明，通过使用先进的脉冲处理器，如 Xspress4，通过消除通道之间的串扰和抑制电荷共享事件，可以提高检测器系统的性能。这项工作可以为用于高通量 X 射线光谱的增强型锗荧光探测器铺平道路。