サイクロトロンチーム

超伝導リングサイクロトロンから大強度の重イオン（ウランなど）ビームを発生させることが、当チームのミッションです。そのための５台のサイクロトロンの運転、維持管理、リニアックを含む全ての高周波系の高度化を行います。また、それとは別に偏極重陽子加速などにおける安定な９９％以上のターン純度を実現するための開発も行っています。

研究テーマ

• サイクロトロンのRFシステムの開発
• ビーム位相とRF電圧の相関の解析
• RIBFサイクロトロンの運転・維持・改良
• シングルターン加速
• 中間エネルギーリバンチャーシステムのための超伝導空洞の開発

主要論文

1. 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 Conferenc, Tel Aviv, Israel(2012).
2. K. Suda, S. Arai, Y. Chiba, O. Kamigaito, M. Kase, H. Okuno, N. Sakamoto, Y. Watanabe, and K. Yamada:
   "Design of Coupler for Direct Coupled Amplifier to Drift Tube Linac Cavities of the Injector RILAC2 for RIBF"
   Proc. The XXVI Linear Accelerator Conferenc, Tel Aviv, Israel(2012).
3. L. Liu, O. Kamigaito, N. Sakamoto, K. Suda, and K. Yamada:
   "Design and simulation of a test model of Tri-Spoke Cavity"
   Proc. The XXVI Linear Accelerator Conferenc, Tel Aviv, Israel(2012).
4. N. Sakamoto, T. Dantsuka, T. Fujinawa, N. Fukunishi, H. Hasebe, Y. Higurashi, K. Ikegami, E. Ikezawa, H. Imao, T. Kageyama, O. Kamigaito, M. Kase, M. Kidera, M. Komiyama, H. Kuboki, K. Kumagai, T. Maie, M. Nagase, T. Nakagawa, M. Nakamura, J. Ohnishi, H. Okuno, K. Ozeki, K. Suda, H. Watanabe, T. Watanabe, Y. Watanabe, K. Yamada, L. Liu, H. Yamasawa:
   "Operating Experience with Acceleration of High Intensity Heavy-ion beams in RIBF"
   Proc. The 9th Annual Meeting of Particle Accelerator Society Japan, Toyonaka(2012).
5. K. Sekiguchi, H. Okamura, N. Sakamoto, H. Suzuki, M. Dozono, Y. Maeda, T. Saito, S. Sakaguchi, H. Sakai, M. Sasano, Y. Shimizu, T. Wakasa, K. Yako, H. Witala, W. Glockle, J. Golak, H. Kamada, and A. Nogga:
   "Three Nucleon Force Effects in Intermediate Energy Deuteron Analyzing Powers for dp Elastic Scattering"
   Physical Review C (accepted).
6. K. Suda, M. Fujimaki, N. Fukunishi, H. Hemmi, O. Kamigaito, M. Kase, R. Koyama, K. Kumagai, N. Sakamoto, T. Watanabe, and K. Yamada:
   "Stable Operation of RF Systems for RIBF"
   Proc. the 19th International Conference on Cyclotrons and Their Applications, Lanzhou, China (2010).
7. N. Sakamoto, M. Fujimaki, A. Goto, O. Kamigaito, M. Kase, R. Koyama, K.Suda, K. Yamada, and S. Yokouchi:
   "Operating Experience with the RF System for Superconducting Ring Cyclotron of RIBF"
   Proc. the 19th International Conference on Cyclotrons and Their Applications, Lanzhou, China (2010).
8. N. Sakamoto,O. Kamigaito, S. Kohara, H. Okuno, M. Kase, A. Goto, and Y. Yano
   "RF system for the RIBF Superconducting Ring Cyclotron"
   Proc. the 18th International Conference on Cyclotrons and Their Applications, Giardini-Naxos, Italy (2007), p455.
9. R. Taki, H. Okamura, N. Fukunishi, H. Ryuto, N. Sakamoto, K. Sekiguchi, and A. Goto:
   "Response of a Germanium Detector to Energetic Heavy Ions"
   Nucl. Instrum. and Methods Phys. Res. A545 (2005) 269--272.
10. O. Kamigaito, M. Kase, N. Sakamoto, Y. Miyazawa, E. Ikezawa, N. Fukunishi, S. Kohara, M. Fujimaki, M. Hemmi, T. Chiba, Y. Chiba, H. Ryuto, A. Goto, and Y. Yano:
    "Construction of a booster linac for the RIKEN heavy-ion linac"
    Nucl. Instrum. and Methods Phys. Res. A545 (2005) 269--272.