Abstract
Status of the development of a one-coordinate gaseous detector of soft X-ray photons for wide-angle X-ray scattering (WAXS) studies is discussed. The detector operates in a counting mode and is based on a multi-stage Gas Electron Multiplier (GEM). A full size detector has a 67 ∘ aperture at 350 mm from the source. Its readout multi-strip structure has 2048 strips with a 0.2 mm pitch. Main parameters of the detector have been measured with a 8 keV X-ray beam on the VEPP-3 synchrotron ring. A spatial resolution of 470 μ m (FWHM) has been demonstrated that will allow distinguishing diffraction spots at 0 . 1 ∘ .
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