MOPG11

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URL	https://doi.org/10.18429/JACoW-IPAC2024-MOPG11
Title	X-ray optics and diagnostics for the cavity-based X-ray free-electron laser project
Authors	P. Liu, P. Pradhan, L. Assoufid, X. Huang, K. Kauchha, K. Kim, K. Lang, A. Miceli, Z. Qiao, X. Shi, D. Shu, J. Sullivan, D. Walko, M. White, Y. Shvyd'ko Argonne National Laboratory M. Rivers Consortium for Advanced Radiation Sources T. Osaka, K. Tamasaku, T. Sato RIKEN SPring-8 Center A. Halavanau, J. MacArthur, D. Zhu, M. Balcazar, K. Li, A. Sakdinawat SLAC National Accelerator Laboratory R. Margraf Stanford University
Abstract	The cavity-based x-ray free-electron laser (CBXFEL) R&D project utilizes a low-loss x-ray cavity (65.5 m long) to provide circulating monochromatized x-ray seeding for electrons from the Cu-linac at SLAC. The project aims to demonstrate the two-pass gain in x-ray regenerative amplifier and XFELO modes by 2024. Here, we report on the design, manufacture, and characterization of x-ray optical and diagnostic components for this project. The low-loss wavefront-preserving x-ray optical components include high-reflectivity C(400) diamond crystal mirrors, drumhead diamond crystal with thin membranes, beryllium refractive lenses, channel-cut Si monochromators, and exact-Backscattering C(440) diamond crystal. The x-ray diagnostics are designed to ensure the accuracy of beam alignment and to characterize and optimize CBXFEL performance. These include different types of x-ray beam position and profile monitors and x-ray beam intensity monitors, and a meV-resolution x-ray spectrograph. All x-ray optical and diagnostic components have been fully characterized with x-rays, and the mechanical installation of these components is expected to be finished soon.
Paper	download: MOPG11.pdf
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Conference	15th International Particle Accelerator Conference
Series
Location	Nashville, TN
Date	19-24 May 2024
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Fulvia Pilat - Oak Ridge National Laboratory Wolfram Fischer - Brookhaven National Laboratory Robert Saethre - Oak Ridge National Laboratory Petr Anisimov - Los Alamos National Laboratory Ivan Andrian - Elettra-Sincrotrone Trieste S.C.p.A.
Online ISBN	978-3-95450-247-9
Online ISSN	2673-5490
Received	14 May 2024
Revised	22 May 2024
Accepted	22 May 2024
Issued	01 July 2024
DOI	10.18429/JACoW-IPAC2024-MOPG11
Pages	319-322
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.