广角衍射单坐标气体探测器的研制
Development of one-coordinate gaseous detector for wide angle diffraction studies
摘要：
目前正在研制一种用于广角X射线散射研究的软X射线光子单坐标气体探测器。该探测器以计数模式运行，基于多级气体电子倍增器（GEM）。全尺寸探测器被组装并且具有67度孔径，与源的距离为350 mm，读出多条结构具有2048条，间距为0.2mm，并且在中心部分配备有读出电子器件。在VEPP-3同步辐射环上用8 keV X射线束测量了探测器的主要参数。已经证明470 μ m（FWHM）的空间分辨率将允许区分0.1度处的衍射斑点。
英文摘要：
A one-coordinate gaseous detector of soft X-ray photons for wide-angle X-ray scattering (WAXS) studies is being developed. The detector operates in counting mode and is based on multi-stage Gas Electron Multiplier(GEM). Full size detector is assembled and has 67 degrees aperture with 350mm distance to the source, readout multi-strip structure with 2048 strips at 0.2mm pitch and is partially equipped with readout electronics in the central part. Main parameters of the detector have been measured with 8keV X-ray beam at VEPP-3 synchrotron ring. Spatial resolution of 470 um (FWHM) has been demonstrated that will allow to distinguish diffraction spots at 0.1 degrees.
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