Double-grating monochromatic beamline with ultrafast response for FLASH2 at DESY

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Abstract

The preliminary design of a monochromatic beamline for FLASH2 at DESY is presented. The monochromator is tunable in the 50-1000eV energy range with resolving power higher than 1000 and temporal response below 50fs over the whole energy range. A time-delay-compensated configuration using the variable-line-spacing monochromator design with two gratings is adopted: The first grating disperses the radiation on its output plane, where the intermediate slit performs the spectral selection; the second grating compensates for the pulse-front tilt and for the spectral dispersion due to diffraction from the first grating.The preliminary design of a monochromatic beamline for FLASH2 at DESY is discussed.

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Poletto, L., Frassetto, F., Brenner, G., Kuhlmann, M., & Plönjes, E. (2018). Double-grating monochromatic beamline with ultrafast response for FLASH2 at DESY. In Journal of Synchrotron Radiation (Vol. 25, pp. 131–137). International Union of Crystallography. https://doi.org/10.1107/S1600577517013777

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