Development of high-efficiency multichannel detectors for high-energy heavy ions, and study of the electric filed formation and plasma turbulences

• Project/Area Number: 24561031
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: National Institute for Fusion Science
• Principal Investigator: IDO TAKESHI 核融合科学研究所, ヘリカル研究部, 准教授 (50332185)
• Co-Investigator(Kenkyū-buntansha): SHIMIZU Akihiro 核融合科学研究所, ヘリカル研究部, 助教 (00390633)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 磁場閉じ込めプラズマ / 電位計測 / 乱流計測 / 高エネルギー重イオン検出器 / 高エネルギー粒子駆動不安定性 / 帯状流 / プラズマ計測 / 重イオンビームプローブ / イオンビーム検出器 / 検出器開発

Outline of Final Research Achievements

We have developed a heavy ion beam probe (HIBP) in order to measure the electric field and turbulence which determine particle and heat transport in magnetically confined high-temperature plasmas. Several methods to detect high-energy probe ions efficiently have been developed. As the results, we have demonstrated that the signal intensity increases 4 times or more in the case that the high energy probe ions are converted to secondary electrons by use of metal targets.
In plasma experiments, we have identified that zonal flow is driven by high-energy ions in the Large Helical Device (LHD). In addition, we have successfully detected transition of radial electric filed which is predicted by the neoclassical theory, for the first time in the LHD plasmas.

Research Products

• [Journal Article] 2D potential measurements by applying automatic beam adjustment system to heavy ion beam probe diagnostic on the Large Helical Device (2014)
  • Author(s): Shimizu, A., Ido, T., Kurachi, M., Makino, R., Nishiura, M., Kato, S., Nishizawa, A., Hamada, Y.
  • Journal Title: Review of Scientific Instruments Volume: 85 Issue: 11
  • DOI: 10.1063/1.4891975
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Indication of bulk-ion heating by energetic particle driven Geodesic Acoustic Modes on LHD (2014)
  • Author(s): Osakabe, M., Ido, T., Ogawa, K., Shimizu, A., Yokoyama, M., Seki, R., Suzuki, C., Isobe, M., Toi, K., Spong, DA., Nagaoka, K., Takeiri, Y., Igami, H., Seki, T., Nagasaki K
  • Journal Title: Proc. 25th IAEA Fusion Energy Conference
  • Open Access
• [Journal Article] Resistive Interchange Mode destabilized by Helically Trapped Energetic Ions and its Effects on Energetic Ions and Bulk Plasmas (2014)
  • Author(s): .Du, X.D., Toi K., Osakabe, M. , Ohdachi, S., Ido, T., Tanaka, K., Yokoyama, M., Yoshinuma, M., K. Ogawa, M. Isobe, Nagaoka, K., Ozaki, T., Sakakibara, S., Seki, R., Suzuki, Y., Watanabe, K.Y.,
  • Journal Title: Proc. 25th IAEA Fusion Energy Conference
  • Open Access
• [Journal Article] Extension of high T e regime with upgraded electron cyclotron resonance heating system in the Large Helical Device (2014)
  • Author(s): Takahashi, H., Shimozuma, T., Kubo, S., Yoshimura, Y., Igami, H., Ito, S., Kobayashi, S., Mizuno, Y., Okada, K., Mutoh, T., Nagaoka, K., Murakami, S., Osakabe, M., Yamada, I., Nakano, H., Yokoyama, M., Ido, T., Shimizu, A., Seki, R., Ida, K., et al.
  • Journal Title: Physics of Plasmas Volume: 21 Pages: 061506-061506
  • Peer Reviewed
• [Journal Article] Bifurcation-Like Behavior of Electrostatic Potential in LHD (2013)
  • Author(s): Akihiro SHIMIZU, Takeshi IDO, Masaki NISHIURA, Ryohei MAKINO,Masayuki YOKOYAMA, Hiromi TAKAHASHI, Hiroe IGAMI, Yasuo YOSHIMURA, Shin KUBO, Takashi SHIMOZUMA, Naoki TAMURA and LHD Experiment Group
  • Journal Title: Plasma and Fusion Research Volume: 8 Issue: 0 Pages: 2402122-2402122
  • DOI: 10.1585/pfr.8.2402122
  • NAID: 130004687673
  • ISSN: 1880-6821
  • Peer Reviewed
• [Presentation] LHDにおける 高速イオン励起GAMの突発的励起現象の観測 (2015)
  • Author(s): 井戸毅, 長壁正樹, 清水昭博, 小川国大, 西浦正樹, M. Lesur, 伊藤公孝, 居田克巳, 稲垣滋, 伊藤早苗
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] LHDにおける高速イオン励起GAMの特性 (2014)
  • Author(s): 井戸 毅, 長壁正樹、清水昭博、西浦正樹、渡利徹夫、小川国大、伊藤公孝、LHD実験グループ
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 新潟市
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Indication of bulk-ion heating by energetic particle driven Geodesic Acoustic Modes on LHD (2014)
  • Author(s): Osakabe, M., Ido, T., Ogawa, K., Shimizu, A., Yokoyama, M., Seki, R., Suzuki, C., Isobe, M., Toi, K., Spong, DA., Nagaoka, K., Takeiri, Y., Igami, H., Seki, T., Nagasaki K
  • Organizer: 25th IAEA Fusion Energy Conference
  • Place of Presentation: St Petersburg, Russia
  • Year and Date: 2014-10-13 – 2014-10-18
• [Presentation] Resistive Interchange Mode destabilized by Helically Trapped Energetic Ions and its Effects on Energetic Ions and Bulk Plasmas (2014)
  • Author(s): .Du, X.D., Toi K., Osakabe, M. , Ohdachi, S., Ido, T., Tanaka, K., Yokoyama, M., Yoshinuma, M., K. Ogawa, M. Isobe, Nagaoka, K., Ozaki, T., Sakakibara, S., Seki, R., Suzuki, Y., Watanabe, K.Y.,
  • Organizer: 25th IAEA Fusion Energy Conference
  • Place of Presentation: St Petersburg, Russia
  • Year and Date: 2014-10-13 – 2014-10-18
• [Presentation] Measurement of the cross sections for gold ion with 1.7 MV tandem accelerator (2014)
  • Author(s): A. Taniike, S. Mochizuki, T. Shinobu, T. Ido, A. Shimizu, M. Nishiura, Y. Furuyama
  • Organizer: International Conference on Atomic Collisions in Solids (ICACS 26)
  • Place of Presentation: Debrecen, Hungary
  • Year and Date: 2014-07-13 – 2014-07-18
• [Presentation] LHDにおける高速イオン励起GAMの同定 (2014)
  • Author(s): 井戸 毅、長壁正樹、清水昭博, 西浦正樹、渡利徹夫, 小川国大，伊藤公孝, LHD実験グループ
  • Organizer: 第10回核融合エネルギー連合講演会
  • Place of Presentation: つくば市
  • Year and Date: 2014-06-19 – 2014-06-20
• [Presentation] 2D potential measurements by applying automatic beam adjustment system to heavy ion beam probe diagnostic on the Large Helical Device (2014)
  • Author(s): Shimizu, A., Ido, T., Kurachi, M., Makino, R., Nishiura, M., Kato, S., Nishizawa, A., Hamada, Y.
  • Organizer: 20ｔｈ Topical Conference on High-Temperature Plasma Diagnostics
  • Place of Presentation: Atlanta, Georgia, USA,
  • Year and Date: 2014-06-01 – 2014-06-05
• [Presentation] Spatiotemporal dynamics of H-mode transition/back-transition and ITB formation (2013)
  • Author(s): Takeshi Ido
  • Organizer: 14th International Workshop on H-modePhysics and Transport Barriers
  • Place of Presentation: Fukuoka, Kyushu, Japan
  • Invited
• [Presentation] Large electrostatic potential fluctuation associated with energetic-particle driven geodesic acoustic mode in LHD (2013)
  • Author(s): T. Ido, A. Shimizu, M. Osakabe, M. Nishiura, M. Kurachi, S. Kato, S. Satake, K. Itoh, T. Watari, and LHD experiment group
  • Organizer: 23rd International Toki Conference
  • Place of Presentation: Toki, Gifu, Japan
• [Presentation] Characteristics of EGAM and influence on ion energy spectra in the LHD plasmas (2013)
  • Author(s): T. Ido, M. Osakabe, A. Shimizu, M. Nishiura, T. Itoh, T. Watari, K. Itoh, Y. Yoshimura, K. Toi, K. Ogawa, S. Satake, and the LHD experiment group
  • Organizer: 3rd Asia Pacific Transport Working Group International Conference
  • Place of Presentation: Jeju, Korea
• [Presentation] The temporal behavior of electrostatic potential and bifurcation property in LHD (2013)
  • Author(s): A. Shimizu, T. Ido, M. Nishiura, R. Makino, M. Kurachi, T. Tokuzawa, M. Yokoyama, H. Takahashi, H. Igami, Y. Yoshimura, S. Kubo, T. Shimozuma, LHD Experiment Group
  • Organizer: Joint 19th ISHW and 16th IEA-RFP workshop
  • Place of Presentation: Padova, Italy
• [Presentation] The temporal behavior of electrostatic potential and bifurcation property in LHD (2013)
  • Author(s): A. Shimizu, T. Ido, M. Nishiura, R. Makino, M. Kurachi, T. Tokuzawa, M. Yokoyama et al.
  • Organizer: The 12th Asia Pacific Physics Conferenc
  • Place of Presentation: Chiba, Japan
• [Presentation] Temporal behavior of electrostatic potential measured with HIBP in the LHD (2013)
  • Author(s): A. Shimizu, T. Ido, M. Nishiura, R. Makino, M. Kurachi, T. Tokuzawa, M. Yokoyama, H. Takahashi, H. Igami, Y. Yoshimura et al.
  • Organizer: 9th Asia Plasma and Fusion Association Conference
  • Place of Presentation: Gyeongju, Korea
• [Presentation] Temporal behavior of electrostatic potential in the LHD (2013)
  • Author(s): A. Shimizu, T. Ido, M. Nishiura, R. Makino, M. Kurachi, T. Tokuzawa et al.
  • Organizer: 23rd International Toki Conference
  • Place of Presentation: Toki, Japan
• [Presentation] LHDにおける高エネルギー粒子駆動GAMの空間構造及びバルクプラズマへの影響の評価 (2012)
  • Author(s): 井戸 毅, 清水昭博, 西浦正樹, 長壁正樹, 中村充希, 東井和夫, 吉村泰夫, 牧野良平, 伊藤公孝, 佐竹真介 , LHD実験グループ
  • Organizer: 第９回核融合エネルギー連合講演会
  • Place of Presentation: 兵庫県神戸市
• [Presentation] Electrostatic potential measurement by the heavy ion beam probe on LHD (2012)
  • Author(s): T. Ido, A. Shimizu, M. Nishiura, S. Kato, M.Nakamura, R. Makino, M.Osakabe, K.Toi, Y. Yoshimura, K.Itoh, S. Satake, and LHD experiment group
  • Organizer: Workshop on Electric Fields, Turbulence and Self-Organisation in Magnetized Plasmas
  • Place of Presentation: ストックホルム（スウェーデン）
• [Presentation] CHARACTERISTICS OF ENERGETIC-PARTICLE DRIVEN GAM IN THE LARGE HELICAL DEVICE (2012)
  • Author(s): T. Ido, A. Shimizu, M.Osakabe, M. Nishiura, K.Toi, M.Nakamura, R. Makino, Y. Yoshimura, K.Itoh, S. Satake, S. Kato, and LHD experiment group
  • Organizer: International Conference and School on Plasma Physics and Controlled Fusion
  • Place of Presentation: アルシュタ（ウクライナ）
  • Invited
• [Presentation] Observation of a new energy channel from energetic particles to bulk ions through geodesic acoustic mode (2012)
  • Author(s): T. Ido, M. Osakabe, A. Shimizu, M. Nishiura, T. Itoh, Y. Yoshimura, K. Toi, K. Ogawa, K. Itoh, T. Watari, S. Satake, M. Nakamura, M. Isobe, K. Nagaoka, et al.
  • Organizer: 24th IAEA Fusion Energy Conference
  • Place of Presentation: サンディエゴ（アメリカ）
• [Presentation] Bifurcation-like behavior of electrostatic potential in LHD (2012)
  • Author(s): Akihiro Shimizu, Takeshi Ido, Masaki Nishiura, Ryohei Makino, Masayuki Yokoyama, Hiromi Takahashi, Hiroe Igami, Yasuo Yoshimura, Shin Kubo, et al.
  • Organizer: 22nd International Toki Conference
  • Place of Presentation: 岐阜県土岐市