Centers & Labs

RIKEN Nishina Center for Accelerator-Based Science

Cyclotron Team

Team Leader: Naruhiko Sakamoto (D.Sci.)
Naruhiko  Sakamoto(D.Sci.)

Together with other teams of Nishina Center accelerator division, maintaining and improving the RIBF cyclotron complex. The accelerator provides high intensity heavy ions. Our mission is to have stable operation of cyclotrons for high power beam operation. Recently stabilization of the rf system is a key issue to provide 10 kW heavy ion beam. Major Research Subjects are: (1) RF technology for Cyclotrons (2) Beam-RF correlation analysis (3) Operation of RIBF cyclotron complex. (4) Maintenance and improvement of RIBF cyclotrons. (5)Development of Superconducting rf cavity for low beta ions (6)Single turn operation for polarized deuteron beams.

Main Research Field

Interdisciplinary science and engineering

Keywords

  • Cyclotron
  • RF
  • Polarized deuteron

Selected Publications

  1. N. Sakamoto, N. Fukunishi, M. Kase, K. Suda, K. Sekiguchi.:
    "Acceleration of Polarized Deuteron Beams with RIBF Cyclotrons"
    Proc. 21st International Conference on Cyclotrons and their Applications, Zurich, Switzerland(2016)TUB04, p.145.
  2. K. Suda, M. Fujimaki, N. Fukunishi, T. Kageyama, O. Kamigaito, M. Kase, M. Komiyama, K. Kumagai, T. Maie, M. Nagase, T. Nagatomo, T. Nakagawa, H. Okuno, N. Sakamoto, A. Uchiyama, T. Watanabe, Y. Watanabe, K. Yamada,S. Fukuzawa, M. Hamanaka, S. Ishikawa, K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi, Y. Kotaka, Y. Ohshiro, S. Yamaka.:
    "Status Report of the Operation of the RIKEN AVF Cyclotron"
    HIAT2015 Proceedings, MOPA12
  3. K. Ozeki, T. Dantsuka, M. Fujimaki, T. Fujinawa, N. Fukunishi, H. Hasebe, Y. Higurashi, E. Ikezawa, H. Imao, T. Kageyama, O. Kamigaito, M. Kase, M. Kidera, M. Komiyama, K. Kumagai, T Maie, M. Nagase, T. Nagatomo, T. Nakagawa, K. Yamada, H. Yamasawa, S. Fukuzawa, M. Hamanaa, S. Ishikawa , K. Kobayashi, R. Koyama, T. Nakamura, M. Nishida, M. Nishimura, J. Shibata, N. Tsukiori, K. Yadomi, Y. Kotaka.:
    "Status Report on the Operation of the RIBF Ring Cyclotrons"
    HIAT2015 Proceedings, WEPB01.
  4. N. Sakamoto.:
    "Present Performance of the RF System for the RIBF Accelerator Complex and Their Upgrade Plan"
    Workshop on Science with Rare Ion Beams SCRIBE-2014.
  5. K. Suda, E. Ikezawa, O. Kamigaito, N. Sakamoto, and K. Yamada.:
    "Construction of the New Amplifiers for the RILEN-LINAC"
    Proc. the XXVII Linear Accelerator Conference, Geneva, Switzerland p339. (2014)
  6. N. Sakamoto, M. Fujimaki, N. Fukunishi, Y. Higurashi, O. Kamigaito, H. Okuno, K. Suda, T. Watanabe, Y. Watanabe, and K. Yamada.:
    "Performance of New Injector RILAC2 for RIKEN RI-Beam Factory"
    Proc. the XXVII Linear Accelerator Conference, Geneva, Switzerland (2014)p1123.
  7. R. Koyama, N. Sakamoto, M. Fujimaki, A. Goto, M. Hemmi, M. Kase, K. Suda, T. Watanabe, K. Yamada, O. Kamigaito.:
    "Online monitoring of beam phase and intensity using lock-in amplifiers"
    Nuclear Instruments and Methods A729(2013)p788-799.
  8. K. Suda, S. Arai, Y. Chiba, O. Kamigaito, M. Kase, H. Okuno, N. Sakamoto, Y. Watanabe, and K. Yamada.:
    "Design and construction of drift tube linac cavities for RIKEN RI-Beam Factory"
    Nuclear Instruments and Methods A722(2013)p55-64.
  9. K. Suda, Y. Higurashi, O. Kamigaito, M. Kase, H. Okuno, N. Sakamoto, Y. Watanabe, and K. Yamada:
    "Operation of the RF System for heavy ion accelerators in RIKEN RI Beam Factory"
    Accelerator Reliability Workshop, Melbourne, Australia (2013)
  10. N. Sakamoto, M. Fujimaki, Y. Higurashi, H. Hasebe, O. Kamigaito, R. Koyama, H. Okuno, K. Suda, T. Watanabe, and K. Yamada:
    "Commissioning of a New Injector for the RIKEN RI-Beam Factory"
    Proc. the XXVI Linear Accelerator Conference, Tel Aviv, Israel (2012)p125-129.

Lab Members

Principal Investigator

Naruhiko Sakamoto
Team Leader

Core Members

Kazutaka Ozeki
Technical Scientist
Kenji Suda
Nishina Center Research Scientist

Contact information

2-1 Hirosawa,
Wako, Saitama
351-0198, Japan

Email: nsakamot [at] ribf.riken.jp

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