X-ray optics for the cavity-based X-ray free-electron laser

Autor: Peifan Liu, Paresh Pradhan, Xianbo Shi, Deming Shu, Keshab Kauchha, Zhi Qiao, Kenji Tamasaku, Taito Osaka, Diling Zhu, Takahiro Sato, James MacArthur, XianRong Huang, Lahsen Assoufid, Marion White, Kwang-Je Kim, Yuri Shvyd'ko
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Synchrotron Radiation, Vol 31, Iss 4, Pp 751-762 (2024)
Druh dokumentu: article
ISSN: 1600-5775
16005775
DOI: 10.1107/S1600577524003977
Popis: A cavity-based X-ray free-electron laser (CBXFEL) is a possible future direction in the development of fully coherent X-ray sources. CBXFELs consist of a low-emittance electron source, a magnet system with several undulators and chicanes, and an X-ray cavity. The X-ray cavity stores and circulates X-ray pulses for repeated FEL interactions with electron pulses until the FEL reaches saturation. CBXFEL cavities require low-loss wavefront-preserving optical components: near-100%-reflectivity X-ray diamond Bragg-reflecting crystals, outcoupling devices such as thin diamond membranes or X-ray gratings, and aberration-free focusing elements. In the framework of the collaborative CBXFEL research and development project of Argonne National Laboratory, SLAC National Accelerator Laboratory and SPring-8, we report here the design, manufacturing and characterization of X-ray optical components for the CBXFEL cavity, which include high-reflectivity diamond crystal mirrors, a diamond drumhead crystal with thin membranes, beryllium refractive lenses and channel-cut Si monochromators. All the designed optical components have been fully characterized at the Advanced Photon Source to demonstrate their suitability for the CBXFEL cavity application.
Databáze: Directory of Open Access Journals
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