Cryo-cooled silicon monochromators at the Materials Imaging and Dynamics (MID) instrument of the European XFEL

Zozulya, A.V.; Samoylova, Liubov; Bösenberg, U.; Hallmann, J.; Jo, W.; Möller, J.; Pudell, J.-E.; Rodriguez-Fernandez, A.; Roth, T.; Shayduk, R.; Sinn, H.; Shu, D.; Dommach, M.; Eidam, J.; Vannoni, M.; Madsen, A.

Cryo-cooled silicon monochromators at the Materials Imaging and Dynamics (MID) instrument of the European XFEL

Zozulya, A.V.; Samoylova, Liubov; Bösenberg, U.; Hallmann, J.; Jo, W.; Möller, J.; Pudell, J.-E.; Rodriguez-Fernandez, A.; Roth, T.; Shayduk, R.; Sinn, H.; Shu, D.; Dommach, M.; Eidam, J.; Vannoni, M.; Madsen, A.

2025

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Abstract

Monochromatization and diagnostics of SASE spectral properties over the entire hard X-ray range are important for many experiments utilizing transverse and longitudinal coherence of XFEL beam. For this purpose the Materials Imaging and Dynamics instrument at European XFEL is equipped with two cryo-cooled double-crystal monochromators using Si111 and Si220 optics. Optical parameters, design and performance of both monochromators are presented.