C
Choji Saji
Publications - 9
Citations - 1491
Choji Saji is an academic researcher. The author has contributed to research in topics: SACLA & Data acquisition. The author has an hindex of 3, co-authored 9 publications receiving 1331 citations.
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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
Evaluation of data-acquisition front ends for handling high-bandwidth data from X-ray 2D detectors: A feasibility study
Choji Saji,Toru Ohata,Togo Kudo,Takashi Sugimoto,Ryotaro Tanaka,Takaki Hatsui,Mitsuhiro Yamaga +6 more
TL;DR: In this article, a prototype front end for SOPHIAS (Silicon-On-Insulator Photon Imaging Array Sensor) was evaluated using an evaluation board, which consists of an FPGA (field-programmable gate array) with an FMC (FPGA mezzanine card) interface to support various physical layers of sensor readout modules and back-end DAQ.
First operation of the SACLA control system in spring-8
R. Tanaka,Toru Fukui,Yukito Furukawa,T. Hatsui,T. Hirono,Naoyasu Hosoda,M. Ishii,M. Kago,A. Kiyomichi,H. Maesaka,T. Masuda,T. Matsumoto,Tomohiro Matsushita,Toru Ohata,Takashi Ohshima,T. Otake,Yuji Otake,Choji Saji,Takashi Sugimoto,T. Takebe,Mitsuhiro Yamaga,A. Yamashita +21 more
TL;DR: The reliability of the control system was enough during the commissioning but small system tuning and adjustment was necessary to achieve more stability.
Upgrade of accelerator radiation safety system for spring-8
Choji Saji,H. Hanaki,M. Kago,T. Masuda,T. Matsushita,H. Ohkuma,K. Soutome,S. Suzuki,R. Tanaka,M. Toko,H. Yonehara +10 more
TL;DR: In this paper, the authors report the status of the current safety interlock system and the conceptual design of the new one, which is scheduled for the summer of 2010 at SPring-8.
System design of accelerator safety interlock for the xfel/spring-8
TL;DR: The accelerator safety interlock system (ASIS) for XFEL/SPring-8 protects personnel from radiation hazards as mentioned in this paper, which consists of three independent systems: central, emergency, and beam-route interlocks.