Development and commissioning of a broadband online X-ray spectrometer for the SXFEL Facility.

Authors :: Yang Z
Zhang X
Geng H
Chen J
Feng C
Liu B
Li B
Source :: Journal of synchrotron radiation [J Synchrotron Radiat] 2024 Sep 01; Vol. 31 (Pt 5), pp. 1373-1381. Date of Electronic Publication: 2024 Jul 29.
Publication Year :: 2024
Abstract: A broadband online X-ray spectrometer has been designed and commissioned at the SUD beamline of the Shanghai Soft X-ray Free-Electron Laser Facility, which can deliver both SASE and seeded FEL pulses to user experiments, spanning the photon energy range of 50-620 eV. The resolving powers of the spectrometer calibrated via online measurement at 92 eV and 249 eV are ∼20000 and ∼15000, respectively, and the absolute photon energy is characterized by an electron time-of-flight spectrometer. The high energy resolution provided by the spectrometer can differentiate the fine structure in the FEL spectrum, to determine its pulse length.<br /> (open access.)

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