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RIKEN SPring-8 Center Innovative Light Sources Division

Division Director: Shunji Goto (D.Eng.)

Research Summary

Shunji  Goto(D.Eng.)

The Innovative Light Sources Division focuses on technical developments for the best SPring-8 synchrotron radiation (SR) sources and schemes for new light sources of the next generation SR.

Research Subjects

  • Exploration of novel light source concepts in SR and XFEL
  • Development of fundamental technologies toward advance insertion devices

Selected Publications

  • 1.S. Yamamoto, Y. Senba, T. Tanaka, H. Ohashi, T. Hirono, H. Kimura et al.:
    "New soft X-ray beamline BL07LSU at SPring-8"
    J. Synchrotron Rad., 21 (2014) 352
  • 2.T. Hara, Y. Inubushi, T. Katayama, T. Sato, H. Tanaka, T. Tanaka et al.:
    "Two-colour hard X-ray free-electron laser with wide tunability"
    Nature Comm., 4 (2013) 2919
  • 3.K. Tamasaku, M. Nagasono, H. Iwayama, E. Shigemasa, Y. Inubushi, T. Tanaka et al.:
    "Double Core-Hole Creation by Sequential Attosecond Photoionization"
    Phys. Rev. Lett., 111 (2013) 043001
  • 4.T. Tanaka:
    "Proposal for a Pulse-Compression Scheme in X-Ray Free-Electron Lasers to Generate a Multiterawatt, Attosecond X-Ray Pulse"
    Phys. Rev. Lett., 110 (2013) 084801
  • 5.H. Yumoto, H. Mimura, T. Koyama, S. Matsuyama, K. Tono, et al.:
    "Focusing of X-ray free electron laser pulses with reflective optics"
    Nature Photon., 7 (2013) 43
  • 6.T. Tanaka, S. Goto, T. Hara, T. Hatsui, H. Ohashi, et el.:
    "Undulator commissioning by characterization of radiation in x-ray free electron lasers"
    Phys. Rev. ST-AB, 15 (2012) 110701
  • 7.Y. Inubushi, K. Tono, T. Togashi, T. Sato, T. Hatsui, et al.:
    "Determination of the Pulse Duration of an X-Ray Free Electron Laser Using Highly Resolved Single-Shot Spectra"
    Phys. Rev. Lett., 109 (2012) 144801
  • 8.T. Ishikawa, H. Aoyagi, T. Asaka, Y. Asano, N. Azumi, et al.:
    "A compact X-ray free-electron laser emitting in the sub-angstrom region"
    Nature Photon., 6 (2012) 540
  • 9.T. Tanaka and H. Kitamura:
    "A new undulator scheme providing various polarization states with low on-axis power density"
    Nucl. Instrum. Meth., A659 (2011) 537
  • 10.T. Tanaka and H. Kitamura:
    "Composite period undulator to improve the wavelength tunability of free electron lasers"
    Phys. Rev. ST-AB, 14 (2011) 050701

Lab Members

Principal investigator

Shunji Goto
Division Director

Contact Information

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


Advanced X-Ray Laser Group
Takashi Tanaka (D.Eng.)
Control System and Information Technology Group
Shunji Goto (D.Eng.)
Advanced Detector Development Team
Takaki Hatsui (D.Sci.)
Beamline Control and Data Analysis Team
Yasumasa Joti (D.Sci.)