X-ray diagnostics for the cavity-based x-ray free-electron laser project

Autor: Peifan Liu, Paresh Pradhan, Antonino Miceli, Donald A. Walko, Deming Shu, Joseph Sullivan, Keenan Lang, Mark Rivers, Mario Balcazar, Kenan Li, Rachel Margraf, Aliaksei Halavanau, Anne Sakdinawat, Takahiro Sato, Diling Zhu, Yuri Shvyd’ko
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Physical Review Accelerators and Beams, Vol 27, Iss 11, p 110701 (2024)
Druh dokumentu: article
ISSN: 2469-9888
DOI: 10.1103/PhysRevAccelBeams.27.110701
Popis: The success of x-ray free-electron lasers (XFELs) in recent years has greatly advanced many scientific fields. However, most of these XFELs suffer from a low longitudinal coherence and instabilities due to the stochastic start-up process. A cavity-based x-ray free-electron laser (CBXFEL) is a possible future direction in the development of fully coherent and stable x-ray sources. One of the challenges of a CBXFEL is the requirement for the μm-sized electron bunches to fully overlap in three dimensions with the circulating μm-sized x-ray pulses in an x-ray cavity tens or hundreds of meters long. We present here the development of an x-ray diagnostics system for accurate alignment of x-ray beams in the CBXFEL cavity. The system was developed within the framework of a CBXFEL research and development collaboration among Argonne National Laboratory, SLAC National Accelerator Laboratory, and Spring-8. All the designed diagnostic components have been fully characterized at the Advanced Photon Source to demonstrate a capability for sub-μrad angular and μm spatial alignment of the CBXFEL cavity.
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