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Proceedings Paper

Fabrication of a 400-mm-long mirror for focusing x-ray free-electron lasers to sub-100 nm
Author(s): Hidekazu Mimura; Shinya Morita; Takashi Kimura; Daisuke Yamakawa; Weimin Lin; Yoshihiro Uehara; Hirokatsu Yumoto; Satoshi Matsuyama; Yoshinori Nishino; Kenji Tamasaku; Haruhiko Ohashi; Makina Yabashi; Tetsuya Ishikawa; Hitoshi Ohmori; Kazuto Yamauchi
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Paper Abstract

We describe the fabrication of a long mirror for focusing X-ray free electron lasers to nanometer dimension, for the production of high photon density beams. The focusing mirror has an elliptical curved shape with a length of 400 mm and focal length of 550 mm. Electrolytic in-process dressing grinding is used for first-step figuring and elastic emission machining is employed for final figuring and surface smoothing. Figure accuracy with a peak-to-valley height of 2 nm is achieved. A focusing test was performed at BL29XUL of SPring-8 and found the focused beam size to be approximately 75 nm at 15 keV, very similar to the theoretical value.

Paper Details

Date Published: 3 September 2008
PDF: 8 pages
Proc. SPIE 7077, Advances in X-Ray/EUV Optics and Components III, 70770R (3 September 2008); doi: 10.1117/12.795643
Show Author Affiliations
Hidekazu Mimura, Osaka Univ. (Japan)
Shinya Morita, Wakou/RIKEN (Japan)
Takashi Kimura, Osaka Univ. (Japan)
Daisuke Yamakawa, Osaka Univ. (Japan)
Weimin Lin, Akita Prefectural Univ. (Japan)
Yoshihiro Uehara, Wakou/RIKEN (Japan)
Hirokatsu Yumoto, SPring-8/Japan Synchrotron Radiation Research Institute (Japan)
Satoshi Matsuyama, Osaka Univ. (Japan)
Yoshinori Nishino, SPring-8/RIKEN (Japan)
Kenji Tamasaku, SPring-8/RIKEN (Japan)
Haruhiko Ohashi, SPring-8/Japan Synchrotron Radiation Research Institute (Japan)
Makina Yabashi, SPring-8/Japan Synchrotron Radiation Research Institute (Japan)
SPring-8/RIKEN (Japan)
Tetsuya Ishikawa, SPring-8/Japan Synchrotron Radiation Research Institute (Japan)
SPring-8/RIKEN (Japan)
Hitoshi Ohmori, Wakou/RIKEN (Japan)
Kazuto Yamauchi, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 7077:
Advances in X-Ray/EUV Optics and Components III
Ali M. Khounsary; Christian Morawe; Shunji Goto, Editor(s)

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