Abstract
A VUV/soft x-ray monochromator was developed for utilizing undulator radiation from a 26-period multipole wiggler/undulator at the Photon Factory. An entrance slitless quasi-Rowland circle mounting was adopted to the monochromator optics, aimed at achieving the compatibility of high resolution with high-output flux. The optics was realized by a decoupling of horizontal focusing with a deflection mirror from vertical focusing with an aberration-free vertical dispersion system which was composed of a cylindrical mirror and a concave grating. The optics and mechanism of the monochromator as well as its test operation made after installation are described.
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