Dr. Hirokatsu Yumoto Profile

Dr. Hirokatsu Yumoto

at Japan Synchrotron Radiation Research Institute

SPIE Involvement:

Author

Publications (30)

Proceedings Article | 4 October 2023 Presentation

In-situ metrology of high heat load optics in SPring-8

Haruhiko Ohashi, Hirokatsu Yumoto, Takahisa Koyama, Yasunori Senba, Hiroshi Yamazaki, Koji Tsubota, Satsuki Shimizu, Takamitsu Saito, Hikaru Kishimoto, Masayuki Tanaka, Yasuhiro Shimizu, Takaihsa Matsuzaki, Takanori Miura

Proceedings Volume PC12695, PC1269506 (2023) https://doi.org/10.1117/12.2682568

KEYWORDS: Metrology, Optical components, Distortion, Wavefronts, Thermal deformation, Simulations, Optical surfaces, Mirrors, Light sources, Crystals

Read Abstract +

Proceedings Article | 3 October 2022 Presentation

High-speed imaging of metal drilling using 100-keV X-rays at SPring-8 (Conference Presentation)

Hidekazu Mimura, Gota Yamaguchi, Keito Tamura, Hirokatsu Yumoto, Takahisa Koyam, Hidekazu Takano, Yujiro Hayashi, Makina Yabashi, Haruhiko Ohashi

Proceedings Volume PC12240, PC1224009 (2022) https://doi.org/10.1117/12.2635300

KEYWORDS: X-rays, High speed imaging, X-ray imaging, Metals, Materials processing, Laser cutting, Visualization, Laser processing, Imaging systems, Analytical research

Read Abstract +

Proceedings Article | 15 September 2020 Presentation + Paper

A test bench of X-ray optics for next-generation high-energy high-flux X-ray beamlines

Hirokatsu Yumoto, Haruhiko Ohashi, Hiroshi Yamazaki, Yasunori Senba, Takahisa Koyama, Kenji Tamasaku, Ichiro Inoue, Taito Osaka, Jumpei Yamada, Makina Yabashi, Shunji Goto

Proceedings Volume 11492, 114920I (2020) https://doi.org/10.1117/12.2570154

KEYWORDS: Hard x-rays, Monochromators, Mirrors, Silicon, Optical components, Reflection, Crystals, Liquid crystals, X-ray optics, X-rays

Read Abstract +

Proceedings Article | 22 August 2020 Presentation

Development of x-ray mirrors for XFEL sub-10 nm focusing system based on Wolter type III geometry

Takato Inoue, Jumpei Yamada, Satoshi Matsuyama, Nami Nakamura, Taito Osaka, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 11491, 114910B (2020) https://doi.org/10.1117/12.2566856

KEYWORDS: Mirrors, X-rays, X-ray lasers, Free electron lasers, Spatial coherence, Nonlinear optics, X-ray optics, Complex systems, Tolerancing, Interferometers

Read Abstract +

Proceedings Article | 21 August 2020 Presentation

Improvement on x-ray beam image by plane mirrors and x-ray windows for a modern x-ray beamline aiming at next generation light source

Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Takanori Miura, Hikaru Kishimoto, Yasuhiro Shimizu, Hiroshi Yamazaki, Haruhiko Ohashi

Proceedings Volume 11492, 114920J (2020) https://doi.org/10.1117/12.2570168

KEYWORDS: X-rays, X-ray imaging, Mirrors, Light sources, X-ray sources, X-ray optics, X-ray detectors, Polishing, X-ray diffraction, Crystals

Read Abstract +

Proceedings Article | 9 September 2019 Paper

Remodeling of the optics for a micro-focusing protein crystallography beamline at SPring-8

Shunji Goto, Tomoyuki Takeuchi, Yasunori Senba, Hirokatsu Yumoto, Hiroshi Yamazaki, Haruhiko Ohashi, Seiki Baba, Nobuhiro Mizuno, Yuki Nakamura, Kazuya Hasegawa, Takashi Kumasaka, Kunio Hirata, Keitaro Yamashita, Naoki Sakai, Masaki Yamamoto

Proceedings Volume 11108, 111080I (2019) https://doi.org/10.1117/12.2530667

KEYWORDS: Proteins, Crystallography, Mirrors, Optical design, Crystals, Laser crystals, Monochromators

Read Abstract +

Proceedings Article | 9 September 2019 Presentation

Precision focusing mirror alignment at SACLA using new nanobeam diagnosis (Conference Presentation)

Takato Inoue, Satoshi Matsuyama, Nami Nakamura, Hirokatsu Yumoto, Yuichi Inubushi, Takahisa Koyama, Taito Osaka, Ichiro Inoue, Kensuke Tono, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 11108, 1110802 (2019) https://doi.org/10.1117/12.2526972

KEYWORDS: Mirrors, X-rays, Beam shaping, Free electron lasers, Speckle pattern, X-ray lasers, Nanoprobes, Laser development, Diffraction gratings, Interferometers

Read Abstract +

Proceedings Article | 18 October 2017 Presentation

Current status and future plan of the soft x-ray beamline at SACLA (Conference Presentation)

Shigeki Owada, Kyo Nakajima, Kensuke Tono, Yasumasa Joti, Tadashi Togashi, Kazuaki Togawa, Takahiro Inagaki, Toru Hara, Takashi Tanaka, Mitsuhiro Yamaga, Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Hitoshi Tanaka, Makina Yabashi

Proceedings Volume 10386, 103860G (2017) https://doi.org/10.1117/12.2275099

KEYWORDS: X-rays, Free electron lasers, Diagnostics, Laser optics, X-ray lasers, Hard x-rays, Prototyping, Laser development, X-ray sources, Synchrotrons

Read Abstract +

Proceedings Article | 11 May 2017 Paper

Overview of optics, photon diagnostics and experimental instruments at SACLA: development, operation and scientific applications

Kensuke Tono, Tadashi Togashi, Yuichi Inubushi, Tetsuo Katayama, Shigeki Owada, Toshinori Yabuuchi, Akira Kon, Ichiro Inoue, Taito Osaka, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Makina Yabashi

Proceedings Volume 10237, 1023706 (2017) https://doi.org/10.1117/12.2268238

KEYWORDS: Mirrors, Laser optics, Silicon, X-ray lasers, Crystallography, Diagnostics, Free electron lasers, X-rays, X-ray optics, Hard x-rays

Read Abstract +

Proceedings Article | 2 November 2016 Presentation

Current status of the EUV/soft x-ray FEL beamline at SACLA (Conference Presentation)

Shigeki Owada, Kyo Nakajima, Tadashi Togashi, Kensuke Tono, Yasumasa Joti, Takahiro Inagaki, Toru Hara, Takashi Tanaka, Kazuaki Togawa, Mitsuhiro Yamaga, Takashi Sugimoto, Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Hitoshi Tanaka, Makina Yabashi

Proceedings Volume 9963, 996303 (2016) https://doi.org/10.1117/12.2237475

KEYWORDS: Free electron lasers, X-rays, Hard x-rays, Prototyping, Extreme ultraviolet, Electron beams, Synchrotron radiation, X-ray optics, Alternate lighting of surfaces, Current controlled current source

Read Abstract +

Proceedings Article | 12 May 2015 Paper

Damage to inorganic materials illuminated by focused beam of x-ray free-electron laser radiation

Takahisa Koyama, Hirokatsu Yumoto, Kensuke Tono, Tadashi Togashi, Yuichi Inubushi, Tetsuo Katayama, Jangwoo Kim, Satoshi Matsuyama, Makina Yabashi, Kazuto Yamauchi, Haruhiko Ohashi

Proceedings Volume 9511, 951107 (2015) https://doi.org/10.1117/12.2182778

KEYWORDS: Silicon, X-rays, Silica, Mirrors, Grazing incidence, Coating, Reflectivity, Free electron lasers, X-ray lasers, Metals

Read Abstract +

Proceedings Article | 5 September 2014 Paper

Ultra-high-precision surface processing techniques for nanofocusing ellipsoidal mirrors in hard x-ray region

Hirokatsu Yumoto, Takahisa Koyama, Satoshi Matsuyama, Kazuto Yamauchi, Haruhiko Ohashi

Proceedings Volume 9206, 920605 (2014) https://doi.org/10.1117/12.2063146

KEYWORDS: Mirrors, Surface roughness, Off axis mirrors, Head, Hard x-rays, X-rays, X-ray optics, Computing systems, Reflectivity, Nanolithography

Read Abstract +

Proceedings Article | 27 September 2013 Paper

Damage characteristics of platinum/carbon multilayers under x-ray free-electron laser irradiation

Jangwoo Kim, Takahisa Koyama, Hirokatsu Yumoto, Ayaka Nagahira, Satoshi Matsuyama, Yasuhisa Sano, Makina Yabashi, Haruhiko Ohashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 8848, 88480S (2013) https://doi.org/10.1117/12.2022735

KEYWORDS: Multilayers, X-rays, Reflectivity, Platinum, Grazing incidence, Free electron lasers, Transmission electron microscopy, X-ray optics, Carbon, X-ray lasers

Read Abstract +

Proceedings Article | 27 September 2013 Paper

Damage threshold investigation using grazing incidence irradiation by hard x-ray free electron laser

T. Koyama, H. Yumoto, K. Tono, T. Sato, T. Togashi, Y. Inubushi, T. Katayama, J. Kim, S. Matsuyama, H. Mimura, M. Yabashi, K. Yamauchi, H. Ohashi

Proceedings Volume 8848, 88480T (2013) https://doi.org/10.1117/12.2025377

KEYWORDS: Reflectivity, X-rays, Mirrors, Laser damage threshold, Free electron lasers, Hard x-rays, Coating, Grazing incidence, Rhodium, X-ray optics

Read Abstract +

Proceedings Article | 28 September 2011 Paper

Upgrade status of hard x-ray 100-nm probe beamlines BL37XU and BL39XU at SPring-8

Takahisa Koyama, Hirokatsu Yumoto, Yasuko Terada, Motohiro Suzuki, Naomi Kawamura, Masaichiro Mizumaki, Nobuteru Nariyama, Tomohiro Matsushita, Yasuhide Ishizawa, Yukito Furukawa, Toru Ohata, Hiroshi Yamazaki, Tomoyuki Takeuchi, Yasunori Senba, Yasuhisa Matsuzaki, Masayuki Tanaka, Yasuhiro Shimizu, Hikaru Kishimoto, Takanori Miura, Hiroaki Kimura, Kunikazu Takeshita, Haruhiko Ohashi, Masaki Yamamoto, Shunji Goto, Masaki Takata, Tetsuya Ishikawa

Proceedings Volume 8139, 81390I (2011) https://doi.org/10.1117/12.893459

KEYWORDS: Mirrors, X-rays, Monochromators, Silicon, Cryogenics, Magnetism, Hard x-rays, Laser beam diagnostics, Light sources, Rhodium

Read Abstract +

Proceedings Article | 24 September 2010 Paper

An adaptive optical system for sub-10nm hard x-ray focusing

H. Mimura, T. Kimura, H. Yokoyama, H. Yumoto, S. Matsuyama, K. Tamasaku, Y. Koumura, M. Yabashi, T. Ishikawa, K. Yamauchi

Proceedings Volume 7803, 780304 (2010) https://doi.org/10.1117/12.862291

KEYWORDS: Mirrors, Hard x-rays, X-rays, Wavefronts, X-ray optics, Optical fiber cables, Optical alignment, Phase measurement, Adaptive optics, Control systems

Read Abstract +

Proceedings Article | 2 September 2010 Paper

Present status of upgraded long trace profiler for characterization of high-precision x-ray mirrors at SPring-8

Y. Senba, H. Kishimoto, H. Ohashi, H. Yumoto, S. Goto, T. Ishikawa

Proceedings Volume 7801, 780104 (2010) https://doi.org/10.1117/12.861021

KEYWORDS: Mirrors, Beam splitters, Sensors, X-rays, Synchrotron radiation, X-ray characterization, Temperature metrology, Helium neon lasers, Optical components, Ceramics

Read Abstract +

Proceedings Article | 9 September 2009 Paper

Design optimization of highly accurate elliptical mirrors for hard-x-ray microfocusing probes at SPring-8

Hirokatsu Yumoto, Kunio Hirata, Atsushi Nisawa, Go Ueno, Masugu Sato, Jin-Young Son, Tomoyuki Koganezawa, Masatake Machida, Takayuki Muro, Ichiro Hirosawa, Motohiro Suzuki, Naomi Kawamura, Masaichiro Mizumaki, Haruhiko Ohashi, Masaki Yamamoto, Yoshio Watanabe, Shunji Goto

Proceedings Volume 7448, 74480Z (2009) https://doi.org/10.1117/12.827024

KEYWORDS: Mirrors, X-rays, Photons, Reflectivity, X-ray magnetic circular dichroism, Spectroscopy, Magnetism, Error analysis, X-ray optics, Rhodium

Read Abstract +

Proceedings Article | 3 September 2008 Paper

Development of adaptive mirror for wavefront correction of hard x-ray nanobeam

Takashi Kimura, Soichiro Handa, Hidekazu Mimura, Hirokatsu Yumoto, Daisuke Yamakawa, Satoshi Matsuyama, Yasuhisa Sano, Kenji Tamasaku, Yoshinori Nishino, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 7077, 707709 (2008) https://doi.org/10.1117/12.796029

KEYWORDS: Mirrors, X-rays, Wavefronts, Ceramics, Hard x-rays, Silicon, Fizeau interferometers, X-ray optics, Optical simulations, Optical components

Read Abstract +

Proceedings Article | 3 September 2008 Paper

Fabrication of a 400-mm-long mirror for focusing x-ray free-electron lasers to sub-100 nm

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

Proceedings Volume 7077, 70770R (2008) https://doi.org/10.1117/12.795643

KEYWORDS: Mirrors, X-rays, Photography, X-ray lasers, Free electron lasers, X-ray technology, Hard x-rays, Particles, Stitching interferometry, Synchrotron technology

Read Abstract +

Proceedings Article | 1 October 2007 Paper

Hard x-ray wavefront measurement and control for hard x-ray nanofocusing

Soichiro Handa, Hidekazu Mimura, Satoshi Matsuyama, Hirokatsu Yumoto, Takashi Kimura, Yasuhisa Sano, Kenji Tamasaku, Yoshinori Nishino, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 6704, 670404 (2007) https://doi.org/10.1117/12.733749

KEYWORDS: Mirrors, Wavefronts, Hard x-rays, X-rays, Platinum, Metrology, Sputter deposition, Multilayers, Interferometry, Spherical lenses

Read Abstract +

Proceedings Article | 20 September 2007 Paper

Reflective optics for sub-10nm hard x-ray focusing

H. Mimura, S. Matsuyama, H. Yumoto, S. Handa, T. Kimura, Y. Sano, K. Tamasaku, Y. Nishino, M. Yabashi, T. Ishikawa, K. Yamauchi

Proceedings Volume 6705, 67050L (2007) https://doi.org/10.1117/12.734752

KEYWORDS: Mirrors, X-rays, Multilayers, Hard x-rays, X-ray optics, Reflectivity, Reflection, Diffraction, X-ray diffraction, Optical design

Read Abstract +

Proceedings Article | 29 August 2006 Paper

At-wavelength figure metrology of total reflection mirrors in hard x-ray region

Hirokatsu Yumoto, Hidekazu Mimura, Satoshi Matsuyama, Soichiro Handa, Akihiko Shibatani, Keiko Katagishi, Yasuhisa Sano, Makina Yabashi, Yoshinori Nishino, Kenji Tamasaku, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 6317, 631709 (2006) https://doi.org/10.1117/12.681587

KEYWORDS: Mirrors, Metrology, X-rays, Hard x-rays, Optical design, Phase retrieval, Diffraction, Reflection, Multilayers, Photovoltaics

Read Abstract +

Proceedings Article | 29 August 2006 Paper

High-spatial-resolution scanning x-ray fluorescence microscope with Kirkpatrick-Baez mirrors

Satoshi Matsuyama, Hidekazu Mimura, Mari Shimura, Hirokatsu Yumoto, Keiko Katagishi, Soichiro Handa, Akihiko Shibatani, Yasuhisa Sano, Kazuya Yamamura, Yoshinori Nishino, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 6317, 631719 (2006) https://doi.org/10.1117/12.681964

KEYWORDS: Mirrors, X-rays, X-ray fluorescence spectroscopy, Microscopes, Spatial resolution, Visualization, Gallium, Gold, Hard x-rays, Light sources

Read Abstract +

Proceedings Article | 29 August 2006 Paper

Wave-optical simulations for designing and evaluating hard x-ray reflective optics

H. Mimura, S. Matsuyama, H. Yumoto, S. Handa, A. Shibatani, K. Katagishi, Y. Sano, Y. Nishino, M. Yabashi, K. Tamasaku, T. Ishikawa, K. Yamauchi

Proceedings Volume 6317, 631718 (2006) https://doi.org/10.1117/12.681944

KEYWORDS: Mirrors, X-ray optics, X-rays, Hard x-rays, Reflectivity, Satellites, X-ray sources, Geometrical optics, Optical simulations, Beam shaping

Read Abstract +

Proceedings Article | 17 September 2005 Paper

Surface figuring and measurement methods with spatial resolution close to 0.1 mm for x-ray mirror fabrication

H. Mimura, H. Yumoto, S. Matsuyama, K. Yamamura, Y. Sano, K. Endo, Y. Mori, Y. Nishino, M. Yabashi, K. Tamasaku, T. Ishikawa, K. Yamauchi

Proceedings Volume 5921, 59210M (2005) https://doi.org/10.1117/12.623103

KEYWORDS: Mirrors, Spatial resolution, X-rays, Particles, Multispectral imaging, Head, Hard x-rays, Interferometry, Computing systems, X-ray imaging

Read Abstract +

Proceedings Article | 31 August 2005 Paper

Hard x-ray nano-focusing at 40nm level using K-B mirror optics for nanoscopy/spectroscopy

Satoshi Matsuyama, Hidekazu Mimura, Hirokatsu Yumoto, Hideyuki Hara, Kazuya Yamamura, Yasuhisa Sano, Katsuyoshi Endo, Yuzo Mori, Yoshinori Nishino, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 5918, 591804 (2005) https://doi.org/10.1117/12.623035

KEYWORDS: Mirrors, X-rays, Tolerancing, Diffraction, Hard x-rays, X-ray optics, Microscopes, Spatial resolution, Autocollimators, X-ray microscopy

Read Abstract +

Proceedings Article | 18 October 2004 Paper

Wave-optical and ray-tracing analysis to establish a compact two-dimensional focusing unit using K-B mirror arrangement

Satoshi Matsuyama, Hidekazu Mimura, Kazuya Yamamura, Hirokatsu Yumoto, Yasuhisa Sano, Katsuyoshi Endo, Yuzo Mori, Makina Yabashi, Kenji Tamasaku, Yoshinori Nishino, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 5533, (2004) https://doi.org/10.1117/12.567515

KEYWORDS: Mirrors, X-rays, Hard x-rays, X-ray optics, Optical alignment, X-ray microscopy, Optical simulations, Geometrical optics, Actuators, Mirror pointing

Read Abstract +

Proceedings Article | 18 October 2004 Paper

Fabrication technology of ultraprecise mirror optics to realize hard x-ray nanobeam

Kazuto Yamauchi, Kazuya Yamamura, Hidekazu Mimura, Yasuhisa Sano, Satoshi Matsuyama, Hirokatsu Yumoto, Kazumasa Ueno, Masafumi Shibahara, Katsuyoshi Endo, Makina Yabashi, Kenji Tamasaku, Yoshinori Nishino, Tetsuya Ishikawa, Yuzo Mori

Proceedings Volume 5533, (2004) https://doi.org/10.1117/12.567501

KEYWORDS: Mirrors, Hard x-rays, X-rays, Electrodes, Head, Plasma, X-ray optics, Manufacturing, Metrology, Platinum

Read Abstract +

Proceedings Article | 18 October 2004 Paper

Microstitching interferometry for nanofocusing mirror optics

Hidekazu Mimura, Hirokatsu Yumoto, Satoshi Matsuyama, Kazuya Yamamura, Yasuhisa Sano, Kazumasa Ueno, Katsuyoshi Endo, Yuzo Mori, Makina Yabashi, Kenji Tamasaku, Yoshinori Nishino, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 5533, (2004) https://doi.org/10.1117/12.567511

KEYWORDS: Mirrors, Interferometers, Interferometry, Fizeau interferometers, X-rays, Hard x-rays, Fringe analysis, Superposition, Stitching interferometry, Spatial resolution

Read Abstract +

Showing 5 of 30 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years