Author: Shvyd’ko, Yu.
Paper Title Page
TUOA02 Conceptual Design of the Cavity Mechanical System for Cavity-Based X-Ray Free Electron Laser 103
 
  • 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
  
  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).
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.
*Kwang-Je Kim et al., TUPRB096, Proceedings of IPAC2019
**Gabe Marcus et al., TUD04, Proceedings of IPAC2019
 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUOA02  
About • paper received ※ 02 August 2021       paper accepted ※ 05 October 2021       issue date ※ 30 October 2021  
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WEPC10 Design of Vacuum Chamber With Cryogenic Cooling of Samples for Bragg-Plane Slope Error Measurements 327
 
  • J.W.J. Anton, P. Pradhan, D. Shu, Yu. Shvyd’ko
    ANL, Lemont, Illinois, USA
  
  Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.
Wavefront preservation is essential for numerous X-ray science applications. Research is currently underway at the Advanced Photon Source to characterize and minimize Bragg-plane slope errors in diamond crystal optics*. Understanding the effect of cooling the optics to cryogenic temperatures on Bragg-plane slope errors is of interest to this research. Through the use of a finite element model a custom, compact vacuum chamber with liquid nitrogen cooling of samples was designed and manufactured. The design process and initial results are discussed in this paper.
*P. Pradhan et al., J. of Synchrotron Radiation 6, 1553 (2020) 		 
poster icon Poster WEPC10 [0.903 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPC10  
About • paper received ※ 13 August 2021       paper accepted ※ 19 October 2021       issue date ※ 01 November 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)