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Title	Conceptual Design of the Cavity Mechanical System for Cavity-Based X-Ray Free Electron Laser
Authors	D. Shu, J.W.J. Anton, L. Assoufid, W.G. Jansma, S.P. Kearney, K.-J. Kim, R.R. Lindberg, S.T. Mashrafi, X. Shi, Yu. Shvyd’ko, W.F. Toter, M. White ANL, Lemont, Illinois, USA H. Bassan, F.-J. Decker, G.L. Gassner, Z. Huang, G. Marcus, H.-D. Nuhn, T.-F. Tan, D. Zhu SLAC, Menlo Park, California, USA
Abstract	The concept behind the cavity-based X-ray FELs (CBXFELs) such as the X-ray free-electron laser oscillator (XFELO)* and the X-ray regenerative amplifier free-electron laser (XRAFEL)** is to form an X-ray cavity with a set of narrow bandwidth diamond Bragg crystals. Storing and recirculating the output of an amplifier in an X- ray cavity so that the X-ray pulse can interact with following fresh electron bunches over many passes enables the development of full temporal coherence. One of the key challenges to forming the X-ray cavity is the precision of the cavity mechanical system design and construction. In this paper, we present conceptual design of the cavity mechanical system that is currently under development for use in a proof-of-principle cavity-based X-ray free electron laser experiment at the LCLS-II at SLAC.
Footnotes & References	*Kwang-Je Kim et al., TUPRB096, Proceedings of IPAC2019 **Gabe Marcus et al., TUD04, Proceedings of IPAC2019
Funding	Work supported by the U.S. Department of Energy, Office of Science, under Contract DE-AC02-06CH1 1357 (ANL) and DE-AC02-76SF00515 (SLAC).
Paper	download TUOA02.PDF [0.643 MB / 4 pages]
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Conference	MEDSI2020
Series	Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation (11th)
Location	Chicago, IL, USA
Date	24-29 July 2021
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Yifei Jaski (ANL, Lemont, IL, USA); Patric Den Hartog (ANL, Lemont, IL, USA); Kelly Jaje (ANL, Lemont, IL, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany)
Online ISBN	978-3-95450-229-5
Online ISSN	2673-5520
Received	02 August 2021
Accepted	05 October 2021
Issue Date	30 October 2021
DOI	doi:10.18429/JACoW-MEDSI2020-TUOA02
Pages	103-106
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.