Performance of a cryo-cooled crystal monochromator illuminated by hard X-rays with MHz repetition rate at the European X-ray Free-Electron Laser

Due to the high intensity and MHz repetition rate of photon pulses generated by the European X-ray Free-Electron Laser, the heat load on silicon crystal monochromators can become large and prevent ideal transmission in Bragg diffraction geometry due to crystal deformation. Here, we present experimen...

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Bibliographic Details
Published in:Optics express 2022-02, Vol.30 (4), p.4978-4987
Main Authors: Petrov, I, Boesenberg, U, Bushuev, V A, Hallmann, J, Kazarian, K, Lu, W, Möller, J, Reiser, M, Rodriguez-Fernandez, A, Samoylova, L, Scholz, M, Sinn, H, Zozulya, A, Madsen, A
Format: Article
Language:English
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Summary:Due to the high intensity and MHz repetition rate of photon pulses generated by the European X-ray Free-Electron Laser, the heat load on silicon crystal monochromators can become large and prevent ideal transmission in Bragg diffraction geometry due to crystal deformation. Here, we present experimental data illustrating how heat load affects the performance of a cryogenically cooled monochromator under such conditions. The measurements are in good agreement with a depth-uniform model of X-ray dynamical diffraction taking beam absorption and heat deformation of the crystals into account.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.451110