Research Summary

Selected Publications

• 1.Hara T et al.:
  "Two-colour hard X-ray free-electron laser with wide tunability"
  Nature Communications, vol. 4, 2919 (2013).
• 2.Hara T et al..:
  "Time-interleaved multienergy acceleration for an x-ray free-electron laser facility"
  Physical Review ST-AB, vol.16, 080701 (2013).
• 3.Ishikawa T et al.:
  "A compact X-ray free-electron laser emitting in the sub-angstrom region"
  Nature Photonics 6, p. 540 (2012).
• 4.Hara T, Togawa K, Tanaka H.:
  "Transverse envelope analysis for accelerating relativistic electron beams in a linear accelerator as a photon source."
  NUCL INSTRUM METH A, vol.624, p.65 (2010).
• 5.Togawa K, Hara T, Tanaka H.:
  "Electron-bunch compression using a dynamical nonlinearity correction for a compact x-ray free-electron laser."
  Physical Review ST-AB, vol.12, p.080706 (2009).
• 6.Shintake T, Tanaka H, Hara T, Tanaka T, Togawa K et al.:
  "Stable operation of a self-amplified spontaneous-emission free-electron laser in the extremely ultraviolet region."
  Physical Review ST-AB, vol.12, p.070701 (2009).
• 7.Lambert G, Hara T, Garzella D, Tanikawa T, Labat M, et al.:
  "Injection of harmonics generated in gas in a free-electron laser providing intense and coherent extreme-ultraviolet light."
  Nature Physics, vol. 4, p.296 (2008).
• 8.Shintake T, Tanaka H, Hara T, Togawa K, Tanaka T, et al.:
  "A compact free-electron laser for generating coherent radiation in the extreme ultraviolet region."
  Nature Photonics vol. 2, p. 555 (2008).
• 9.Hara T, Togawa K, Tanaka H.:
  "BEAM OPTICS AND PARMETER DESIGN OF THE XFEL/SPRING-8."
  Proceedings of the FEL conference 2010, Malmo, p.111 (2010).
• 10.Kano Y, Hara T, Takebe H, Fukami K, Kumagai N.:
  "XFEL ELECTRO-MAGNETS AND THEIR EXCITATION CHARACTERISTICS,"
  Proceedings of the 7th Annual Meeting of Particle Accelerator Society of Japan (in Japanese), Himeji, p.558 (2010).

Recent Research Results

• 

  Dec. 4, 2013
  Intense two-color double X-ray laser pulses: a powerful tool to study ultrafast processes

Lab Members

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