T
Takashi Tanaka
Researcher at Kyushu University
Publications - 205
Citations - 6589
Takashi Tanaka is an academic researcher from Kyushu University. The author has contributed to research in topics: Undulator & Magnetosphere. The author has an hindex of 35, co-authored 186 publications receiving 5789 citations. Previous affiliations of Takashi Tanaka include National Institute of Information and Communications Technology.
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Journal ArticleDOI
A compact X-ray free-electron laser emitting in the sub-ångström region
Tetsuya Ishikawa,Hideki Aoyagi,Takao Asaka,Yoshihiro Asano,Noriyoshi Azumi,T. Bizen,H. Ego,Kenji Fukami,Toru Fukui,Yukito Furukawa,Shunji Goto,Hirofumi Hanaki,Toru Hara,Teruaki Hasegawa,Takaki Hatsui,Atsushi Higashiya,T. Hirono,Naoyasu Hosoda,Miho Ishii,Takahiro Inagaki,Yuichi Inubushi,Toshiro Itoga,Yasumasa Joti,Masahiro Kago,Takashi Kameshima,Hiroaki Kimura,Yoichi Kirihara,Akio Kiyomichi,T. Kobayashi,Chikara Kondo,Togo Kudo,Hirokazu Maesaka,Xavier Maréchal,Takemasa Masuda,Shinichi Matsubara,Takahiro Matsumoto,Tomohiro Matsushita,Sakuo Matsui,Mitsuru Nagasono,Nobuteru Nariyama,Haruhiko Ohashi,Toru Ohata,Takashi Ohshima,Shun Ono,Yuji Otake,Choji Saji,Tatsuyuki Sakurai,Takahiro Sato,Kei Sawada,T. Seike,Katsutoshi Shirasawa,Takashi Sugimoto,Shinsuke Suzuki,Sunao Takahashi,Hideki Takebe,Kunikazu Takeshita,Kenji Tamasaku,Hitoshi Tanaka,Ryotaro Tanaka,Takashi Tanaka,Tadashi Togashi,Kazuaki Togawa,Atsushi Tokuhisa,Hiromitsu Tomizawa,Kensuke Tono,Shukui Wu,Makina Yabashi,Mitsuhiro Yamaga,Akihiro Yamashita,Kenichi Yanagida,Chao Zhang,Tsumoru Shintake,Hideo Kitamura,Noritaka Kumagai +73 more
TL;DR: In this paper, the SPring-8 Angstrom Compact Free-Electron Laser (CFEL) was used for sub-angstrom fundamental-wavelength lasing at the Tokyo National Museum.
Journal ArticleDOI
A compact free-electron laser for generating coherent radiation in the extreme ultraviolet region
Tsumoru Shintake,Hitoshi Tanaka,Toru Hara,Takashi Tanaka,Kazuaki Togawa,Makina Yabashi,Yuji Otake,Yoshihiro Asano,T. Bizen,Toru Fukui,Shunji Goto,Atsushi Higashiya,T. Hirono,Naoyasu Hosoda,Takahiro Inagaki,Shinobu Inoue,Miho Ishii,Yujong Kim,Hiroaki Kimura,Masanobu Kitamura,T. Kobayashi,Hirokazu Maesaka,Takemasa Masuda,Sakuo Matsui,Tomohiro Matsushita,Xavier Maréchal,Mitsuru Nagasono,Haruhiko Ohashi,Toru Ohata,Takashi Ohshima,K. Onoe,Katsutoshi Shirasawa,Tetsuya Takagi,Sunao Takahashi,Masao Takeuchi,Kenji Tamasaku,Ryotaro Tanaka,Yoshihito Tanaka,T. Tanikawa,Tadashi Togashi,Shukui Wu,Akihiro Yamashita,Kenichi Yanagida,Chao Zhang,Hideo Kitamura,Tetsuya Ishikawa +45 more
TL;DR: In this paper, a 55m-long compact self-amplified spontaneous emission (SEM) source with a low acceleration energy of 250 MeV was used to generate X-ray free-electron laser radiation with a 2-GeV machine.
Journal ArticleDOI
SPECTRA: a synchrotron radiation calculation code.
Takashi Tanaka,Hideo Kitamura +1 more
TL;DR: An application program to calculate various characteristics of synchrotron radiation, called SPECTRA, is described, and effective numerical methods implemented to reduce computation time are explained.
Journal ArticleDOI
Focusing of X-ray free-electron laser pulses with reflective optics
Hirokatsu Yumoto,Hidekazu Mimura,Takahisa Koyama,Satoshi Matsuyama,Kensuke Tono,Tadashi Togashi,Yuichi Inubushi,Takahiro Sato,Takashi Tanaka,Takashi Kimura,Hikaru Yokoyama,Jangwoo Kim,Yasuhisa Sano,Yousuke Hachisu,Makina Yabashi,Haruhiko Ohashi,Hitoshi Ohmori,Tetsuya Ishikawa,Kazuto Yamauchi +18 more
TL;DR: In this paper, the authors focus 10 keV X-ray free-electron laser radiation to an area of 0.95 µm × 1.20 µm with near-100%-efficiency using reflective optics.
Journal ArticleDOI
Two-colour hard X-ray free-electron laser with wide tunability.
Toru Hara,Yuichi Inubushi,Tetsuo Katayama,Takahiro Sato,Hitoshi Tanaka,Takashi Tanaka,Tadashi Togashi,Kazuaki Togawa,Kensuke Tono,Makina Yabashi,Tetsuya Ishikawa +10 more
TL;DR: A new light source of a two-colour double-pulse (TCDP) XFEL in hard X-rays using variable-gap undulators is shown, which realizes a large and flexible wavelength separation of more than 30% with an ultraprecisely controlled time interval in the attosecond regime.