Centers & Labs

RIKEN SPring-8 Center

Accelerator Research and Development Group

Group Director: Hitoshi Tanaka (D.Eng.)
Hitoshi  Tanaka(D.Eng.)

The group conducts R&D on accelerator components, beam handling technology and insertion devices for achieving ultimate performance of SASE FEL. The group also carries out R&D on Seeded FEL that generates ideal brilliant X-rays having spatial and temporal coherence. Since SACLA is particularly characterized by multi-XFEL beam line operations, the group are making elaborate efforts to develop pulse-by-pulse beam control technologies including stable and fast beam switching, precise RF parameter control, and virtual accelerator-based operation system, etc..

Main Research Field

Interdisciplinary science and engineering

Related Research Fields

Mathematical and physical sciences / Engineering

Applied Physics / Quantum Beam Science / Computational Science / Physics

Keywords

  • Particle Accelerators
  • Beam Physics
  • Synchrotron Radiation
  • X-ray Free Electron Laser
  • SPring-8

Selected Publications

  1. Chikara Kondo*, Toru Hara, Toru Fukui, Takahiro Inagaki, Hideki Takebe, Shingo Nakazawa, Kenji Fukami, Yusuke Kawaguchi, Hideaki Kawaguchi, Yuji Otake, and Hitoshi Tanaka.:
    "A stable pulsed power supply for multi-beamline XFEL operations"
    Review of Science Instruments 89, 064704 (2018).
  2. Hirokazu Maesaka*, Toru Hara, Kazuaki Togawa, Takahiro Inagaki, and Hitoshi Tanaka.:
    "Brightness analysis of an electron beam with a complex profile"
    Physical Review Accelerators and Beams 21, 050703 (2018).
  3. Toru Hara*, Chikara Kondo, Takahiro Inagaki, Kazuaki Togawa, Kenji Fukami, Shingo Nakazawa, Taichi Hasegawa, Osamu Morimot, Masamichi Yoshioka, Hirokazu Maesaka, Yuji Otake, and Hitoshi Tanaka.:
    "High peak current operation of x-ray free-electron laser multiple beam lines by suppressing coherent synchrotron radiation effect"
    Physical Review Accelerators and Beams 21, 040701 (2018).
  4. Asaka T., Ego H., Hanaki H., Hara T., Hasegawa T., Hasegawa T., Inagaki T., Kobayashi T., Kondo C., Maesaka H., Matsubara S., Matsui S., Ohshima T., Otake Y., Sakurai T., Suzuki S., Tajiri Y., Tanaka S., Togawa K., and Tanaka H.:
    "Low-emittance thermionic-gun-based injector for a compact free-electron laser",
    Physical Review. Accelerators and Beams 20, 080702 (2017).
  5. Hara T., Fukami K., Inagaki T., Kawaguchi H., Kinjo R., Kondo C., Otake Y., Tajiri Y., Takebe H., Togawa K., Yoshino T., Tanaka H., and Ishikawa T.:
    "Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers",
    Physical Review Accelerators and Beams 19, 020703 (2016).
  6. Tomizawa H., Sato T., Ogawa K., Togawa K., Tanaka T., Hara T., Yabashi M., Tanaka H., Ishikawa T., Togashi T., Matsubara S., Okayasu Y., Watanabe T., Takahashi E.J., Midorikawa K., Aoyama M., Yamakawa K., Owada S., Iwasaki A., and Yamanouchi K.:
    "Stabilization of a high-order harmonic generation seeded extreme ultraviolet free electron laser by time-synchronization control with electro-optic sampling",
    High Power Laser Science and Engineering Vol. 3, e14, 10 pages (2015).
  7. Hara T., Inubushi Y., Katayama T., Sato T., Tanaka H., Tanaka T., Togashi T., Togawa K., Tono K., Yabashi M., and Ishikawa T.:
    "Two-Color Hard X-ray Free-Electron Laser with Wide Tunability",
    Nature Communications 4, Article number: 2919 (2013).
  8. Hara T., Tamasaku K., Asaka T., Inagaki T., Inubushi Y., Katayama T., Kondo C., Maesaka H., Matsubara S., Ohshima T., Otake Y., Sakurai T., Sato T., Tanaka H., Togashi T., Togawa K., Tono K., Yabashi M., and Ishikawa T.:
    "Time-interleaved multi-energy acceleration for an XFEL facility",
    Physical Review Special Topics Accelerators and Beams 16, 080701 (2013).
  9. Tanaka T., Goto S., Hara T., Hatsui T., Ohashi H., Togawa K., Yabashi M., and Tanaka H.:
    "Undulator commissioning by characterization of radiation in x-ray free electron lasers",
    Physical Review Special Topics Accelerators and Beams 15, 110701 (2012).
  10. Ishikawa T., Aoyagi H., Asaka T., Asano Y., Azumi N., Bizen T., Ego H., Fukami K., Fukui T., Furukawa Y., Goto S., Hanaki H., Hara T., Hasegawa T., Hatsui T., Higashiya A., Hirono T., Hosoda N., Ishii M., Inagaki T., Inubushi Y., Itoga T., Joti Y., Kago M., Kameshima T., Kimura H., Kirihara Y., Kiyomichi A., Kobayashi T., Kondo C., Kudo T., Maesaka H., Maréchal X. M., Masuda T., Matsubara S., Matsumoto T., Matsushita T., Matsui S., Nagasono M., Nariyama N., Ohashi H., Ohata T., Ohshima T., Ono S., Otake Y., Saji C., Sakurai T., Sato T., Sawada K., Seike T., Shirasawa K., Sugimoto T., Suzuki S., Takahashi S., Takebe H., Takeshita K., Tamasaku K., Tanaka H., Tanaka R., Tanaka T., Togashi T., Togawa K., Tokuhisa A., Tomizawa H., Tono K., Wu S., Yabashi M, Yamaga M., Yamashita A., Yanagida K., Zhang C., Shintake T., Kitamura H., and Kumagai N.:
    "A compact X-ray free-electron laser emitting in the sub-ångström region",
    Nature Photonics 6, 540-544 (2012).

Organization

Contact information

1-1-1 Kouto, Sayo-cho
Sayo-gun, Hyogo
679-5148 Japan

Email: tanaka [at] spring8.or.jp