Centers & Labs

RIKEN SPring-8 Center

Laser Acceleration Development Team

Team Leader: Tomonao Hosokai (D.Sci.)
Tomonao  Hosokai(D.Sci.)

Laser Acceleration Development Team study the laser driven electron acceleration and its key technologies, aiming for the realization of compact, stable and reliable high-energy electron accelerators. We develop GeV-class multi-staged Laser Wake-Field Acceleration (LWFA) with plasma photonic devices formed by well-controlled plasmas, and also proceed application researches of high-energy and ultra-short electron beams from LWFA, such as laser-driven XFEL and ultra-fast electron imaging.

Main Research Field

Interdisciplinary science and engineering

Related Research Fields

Mathematical and physical sciences / Engineering

Quantum beam science / Plasma science / Applied physics


  • Laser-driven Particle Acceleration
  • Laser Wake-field
  • Ultra-high-gradient Accelerator
  • Ultra-short electron beam
  • Pulse Power Engineering

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.
  1. Sakai, Y., Pathak, N., Jin, Z., Zhidkov, A., Sueda, K., Toran, H., Tanizawa, Y., Otsuka, T., Ogino, J., Nakamura, H.,Kodama, R., and Hosokai, T.:
    "Narrow band and energy selectable plasma cathode for multistage laser wakefield acceleration"
    Phys. Rev. ST Accel. Beams, 21, 101301 (2018)
  2. *Nakanii, N., Hosokai, T., Iwasa, K., Masuda, S., Zhidkov, A., Pathak, N., Nakahara, H., Mizuta, Y., Takeguchi, N., and Kodama, R.:
    “Transient magnetized plasma as an optical element for high power laser pulses”
    Phys. Rev. ST Accel. Beams, 18(2), 021303_1-6 (2015)
  3. *Bulanov, V. S., Esirkepov, T., Kando, M., Koga, J., Hosokai, T., Zhidkov, A., and Kodama, R.:
    “Nonlinear Plasma Wave in Magnetized Plasmas”
    Plasma Physics, 20(8), 083113_1-14 (2013)
  4. *Mizuta, Y., Hosokai, T., Masuda, S., Zhidkov, A., Makito, K., Nakanii, N., Kajino, S., Nishida, A., Kando, M., Mori, M., Kotaki, H., Hayashi, Y., Bulanov, V. S., and Kodama, R.:
    "Splash plasma channels produced by picosecond laser pulses in argon gas for laser wakefield acceleration"
    Phys. Rev. S. T. - Accel. Beams, 15(12), 121301_1-10 (2012)
  5. *Hosokai, T., Zhidkov, A., Yamazaki, A., Mizuta, Y., Uesaka, M., and Kodama, R.:
    “Electron energy boosting in laser-wake-field acceleration with external magnetic field B〜 1T and laser prepulses”
    Applied Physics Letters, 96(12), 121501-1_3 (2010)
  6. *Hafz, N., Jeong, M. T., Choi, W. I., Lee, K. S., Pae, H. K., Kulagin, V., Sung, H. J., Yu, J. T., K.-H. Hong, K.-H, Kim, T. H., Hosokai, T., Cary,J., Noh, Y.-C., Ko, D.-K., and Lee, J.:
    "Stable generation of GeV class electron beams from self- guided laser-plasma channels"
    Nature Photonics, 2, 571 (2008)
  7. *Hosokai, T., Kinoshita, K., Zhidkov, A., Maekawa, A., Yamazaki, and A., Uesaka, M.:
    "Effect of external static magnetic field on the emittance and total charge of electron beams generated by laser wake field acceleration."
    Physical Review Letters , 97, 075004 (2006)
  8. *Hosokai, T., Kinoshita, K., Yamazaki, A., Zhidkov, A., Ohkubo, T., Maekawa, A., Kando, M., Kotaki,H., and Uesaka, M.:
    "Observation of strong correlation between quasi-mono-energetic electron beam generation by laser wakefield and laser guiding inside pre-plasma cavity"
    Physical Review E , 73, 036047 (2006)
  9. *Hosokai, T., Kinoshita, K., Zhidokov, A., Watanabe, T., Kando, M., Kotaki, H., Nakajima, K., and Uesaka, M.:
    "Effect of laser prepulse on a narrow cone ejection of MeV electrons from a gas jet irradiated by an ultrashort laser pulse"
    Physical Review E , 67, 036407 (2003)
  10. *Hosokai, T., Kando, M., Dewa, H., Kotaki, H., Kondo, S., Horioka, K. and Nakajima, K.:
    "Optical guidance of terrawatt laser pulses by the implosion phase of fast Z-pinch discharge in a gas-filled capillary"
    Optics Letters , 25,10 (2000)