For The General Public

RIBF Research Division

Research Facility Development Division

Accelerator Applications Research Group

Subnuclear System Research Division

Directly under the Nishina Center

BigRIPS Team

Photo of the leader
Laboratory Head
Koichi YOSHIDAD.Sci.
  • 1985年東京工業大学理学部卒業
  • 1988年同大学院理学研究科物理学専攻中退
  • 1989年理化学研究所リニアック研究室研究員補
  • 1991年東京工業大学より博士号取得
  • 1992年理化学研究所リニアック研究室研究員
  • 1999年理化学研究所RIビーム科学研究室先任研究員
  • 2010年理化学研究所RIビーム分離生成装置チーム チームリーダー


Staff Photo

Research Areas

This team is in charge of design, construction, development and operation of BigRIPS in-flight separator and its related research instruments such as ZeroDegree spectrometer at RI beam factory (RIBF). They are employed not only for the production of RI beams but also various kinds of experimental studies using RI beams.

Photo of BigRIPS Second stage

Research Subject

  1. Construction, improvement and operation of BigRIPS separator and its related research instruments
  2. Research and development on RI-beam production and RI-beam separator issues
  3. Related research using RI beams

List of Selected Publications

  1. T. Kubo:
    "In-flight RI beam separator BigRIPS at RIKEN and elsewhere in Japan"
    Nucl. Instr. Meth., B204, 97 (2003).
  2. T. Kubo, K. Kusaka, K. Yoshida, A. Yoshida, T. Ohnishi, M. Ohtake, Y. Yanagisawa, N. Fukuda, T. Haseyama, Y. Yano, N. Kakutani, T. Tsuchihashi and K. Sato:
    "Status and Overview of Superconducting Radioactive Isotope Beam Separator BigRIPS at RIKEN"
    IEEE Transactions on Applied Superconductivity, 17, 1069 (2007).
  3. T. Ohnishi, T. Kubo et al.:
    "Identification of New Isotopes 125Pd and 126Pd produced by In-flight Fission of 345 MeV/nucleon 238U: First Results from the RIKEN RI Beam Factory"
    Journal of the Physical Society of Japan, 77, 083201(2008).
  4. T. Ohnishi, T. Kubo et al.:
    "Identification of 45 New Neutron-Rich Isotopes Produced by In-flight Fission of a 238U Beam at 345 MeV/nucleon"
    Journal of the Physical Society of Japan, 79, 073201(2010).
  5. D. Kameda, T. Kubo et. Al.:
    "Obervation of new microsecond isomers among fission products from in-flight fission of 345 MeV/nucleon 238U"
    Phys. Rev. C86, 054319(2012)
  6. K. Yoshida, N. Fukuda, Y. Yanagisawa, N. Inabe, Y. Mizoi, and T. Kubo:
    "High-Power beam dump system for the Bigrips fragment separator at RIKEN RI Beam Factory"
    Nucl. Instr. Meth., B317, 373 (2013).
  7. H. Kumagai, T. Ohnishi, N. Fukuda, H. Takeda, D. Kameda, N. Inabe, K. Yoshida and T. Kubo:
    "Development of Parallel Plate Avalanche Counter (PPAC) for BigRIPS fragment separator"
    Nucl. Instr. Meth., B317, 717 (2013).
  8. K. Tanaka, N. Inabe, K. Yoshida, K. Kusaka, and T. Kubo:
    "Pillow seal system at the BigRIPS separator"
    Nucl. Instr. Meth., B317, 734 (2013).
  9. H. Suzuki, T. Kubo, et. al.:
    "Production cross section measurements of radioactive isotopes by BigRIPS separator at RIKEN RI Beam Factory"
    Nucl. Instr. Meth., B317, 756 (2013).
  10. K.Tanaka, N. Inabe, K. Yoshida, and T. Kubo:
    "Evaluation of radiation levels and comparison with PHITS calculations for the BigRIPS separator in Radioactive Isotope Beam Factory"
    Progress in Nuclear Science and Technology 4, 201 (2014).


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