Precise Measurement of Ion Temperature in Boundary Simulated Plasmas

• Project/Area Number: 25420888
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: University of Tsukuba (2015); Nagano National College of Technology (2013-2014)
• Principal Investigator: Ezumi Naomichi 筑波大学, 数理物質系, 准教授 (20321432)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: プラズマ / 核融合 / 境界領域プラズマ / ダイバータ / イオン温度 / プローブ計測 / レーザー誘起蛍光法 / 異方性 / プローブ / イオンセンシティブプローブ

Outline of Final Research Achievements

Boundary plasma has an important role for controlling heat and/or particle load to the plasma facing components of magnetic fusion devices. In this study, precious ion temperature measurements which contribute to understand the boundary plasma property have been done by using probe techniques in a linear steady plasma device and the large tandem mirror plasma device GAMMA 10/PDX. The investigation has revealed the influence of anisotropy of ion temperature in magnetized plasma on the measurement. The new diagnostics system for laser induced fluorescence measurement which is constructed in this study will be adopted to the divertor simulation experiment in GAMMA 10/PDX. Investigation of detached plasma formation for high ion temperature plasma and exploring its control technique have been planned.

Research Products

• [Presentation] Ion sensitive probe measurement of the divertor simulation plasma in GAMMA 10/PDX (2016)
  • Author(s): Naomichi Ezumi, K. Nojiri, A. Terakado, K. Ichimura, M. Sakamoto, Y. Nakashima
  • Organizer: 11th International Conference on Open Magnetic Systems for Plasma Confinement
  • Place of Presentation: Novosibirsk, Russia
  • Year and Date: 2016-08-08
  • Int'l Joint Research
• [Presentation] Evaluation of ion temperature and its anisotropy using an ion sensitive probe in the divertor simulation plasma of GAMMA 10/PDX (2016)
  • Author(s): Naomichi Ezumi, K. Nojiri, A. Terakado, K. Ichimura, M. Sakamoto, K. Sawada, N. Ohno, H. Tanaka, M. Kobayashi, S. Masuzaki, Y. Nakashima
  • Organizer: 22nd International Conference on Plasma Surface Interactions in Controlled Fusion Devices (22nd PSI)
  • Place of Presentation: Rome,Italy
  • Year and Date: 2016-05-30
  • Int'l Joint Research
• [Presentation] 境界領域プラズマにおけるイオン温度異方性の評価 (2015)
  • Author(s): 江角直道, 野尻訓平, 寺門明紘, 成田昂平, 田中裕樹, 大久保克朗, 伊能俊太朗, 坂本瑞樹,中嶋洋輔, 澤田圭司, 大野哲靖, 田中宏彦, 小林政弘, 増崎貴
  • Organizer: 第32回プラズマ・核融合学会年会
  • Place of Presentation: 名古屋大学東山キャンパス（愛知県名古屋市）
  • Year and Date: 2015-11-25
• [Presentation] Ion temperature measured by probes in the D-module plasma of GAMMA 10/PDX (2015)
  • Author(s): Naomichi Ezumi, K. Nojiri, A. Terakado, K. Narita, M. Sakamoto, K. Sawada, N. Ohno, H. Tanaka, M. Kobayashi, S. Masuzaki, Y. Nakashima
  • Organizer: 5th International Workshop on Plasma Material Interaction Facilities for Fusion Research (PMIF 2015)
  • Place of Presentation: Juelich, Germany
  • Year and Date: 2015-10-07
  • Int'l Joint Research
• [Presentation] Anisotropy of Ion Temperature Measured by using Ion Sensitive Probe (2015)
  • Author(s): Naomichi Ezumi, K. Nojiri, A. Terakado, K. Narita, M. Sakamoto, K. Sawada, N. Ohno, H. Tanaka, M. Kobayashi, S. Masuzaki, Y. Nakashima
  • Organizer: International Workshop on Electric Probes in Magnetized Plasmas (IWEP2015)
  • Place of Presentation: Sozopol, Bulgaria
  • Year and Date: 2015-09-16
  • Int'l Joint Research
• [Presentation] イオンセンシティブプローブとレーザー誘起蛍光法による再結合プラズマのイオン温度計測 (2014)
  • Author(s): 江角直道，櫻井駿, ハニフ ザイヌディン, 畑田優馬, 吉田智貴, 澤田圭司，大野哲靖，田中宏彦，小林政弘, 増崎貴
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 新潟県新潟市
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] イオンセンシティブプローブとレーザー誘起蛍光法による低温高密度磁化プラズマ中のイオン温度計測 (2014)
  • Author(s): 江角直道, 櫻井駿, ハニフ ザイヌディン, 澤田圭司, 大野哲靖, 田中宏彦, 小林政弘, 増崎貴
  • Organizer: 平成26年電気学会 基礎・材料・共通(A)部門大会
  • Place of Presentation: 長野県長野市
  • Year and Date: 2014-08-21 – 2014-08-22
• [Presentation] ISPとLIFによる境界領域プラズマのイオン温度計測 (2014)
  • Author(s): 江角直道, 澤田圭司, 大野哲靖, 田中宏彦, 小林政弘, 増崎貴, Zh. Kiss’ovski
  • Organizer: 第10回核融合エネルギー連合講演会
  • Place of Presentation: 茨城県つくば市
  • Year and Date: 2014-06-19 – 2014-06-20
• [Presentation] Evaluation of ion temperature anisotropy on ion sensitive probe (2014)
  • Author(s): N. Ezumi, K. Imai, R. Ohta, Y. Hatada, T. Yoshida, K. Sawada, N. Ohno, H. Tanaka, M. Kobayashi, S. Masuzaki and Zh. Kiss'ovski
  • Organizer: 21th International Conference on Plasma Surface Interactions in Controlled Fusion Devices
  • Place of Presentation: 石川県金沢市
  • Year and Date: 2014-05-26 – 2014-05-30
• [Presentation] Evaluation of ion temperature anisotropy on ion sensitive probe (2014)
  • Author(s): N. Ezumi, K. Imai, R. Ohta, Y. Hatada, T. Yoshida, K. Sawada, N. Ohno, H. Tanaka, M. Kobayashi, S. Masuzaki, Zh.Kiss'ovski
  • Organizer: 21st International Conference on Plasma Surface Interactions in Controlled Fusion Devices
  • Place of Presentation: 石川県立音楽堂（金沢市）
• [Presentation] ISPとLIFによる境界領域プラズマのイオン温度計測 (2014)
  • Author(s): 江角直道，今井希和，太田良，畑田優馬，吉田智貴，澤田圭司，大野哲靖，田中宏彦，小林政弘，増崎貴，Zh. Kiss’ovski
  • Organizer: 第10回 核融合エネルギー連合講演会
  • Place of Presentation: つくば国際会議場（つくば市）
• [Presentation] イオンセンシティブプローブ計測における温度異方性の評価
  • Author(s): 江角直道, 今井希和, 太田良, 畑田優馬, 吉田智貴, 澤田圭司, 大野哲靖, 田中宏彦, 小林政弘, 増崎 貴, Zh. Kiss’ovski
  • Organizer: プラズマ・核融合学会第30回年会
  • Place of Presentation: 東工大・大岡山キャンパス（東京都目黒区）
• [Remarks] 長野高専・プラズマ制御工学研究室
  • URL: http://www.nagano-nct.ac.jp/teacher/ezumi/
• [Remarks] 筑波大学・プラズマ研究センター
  • URL: http://www.prc.tsukuba.ac.jp/~ezumi/
• [Remarks] 長野高専・電子制御工学科・プラズマ制御工学研究室HP
  • URL: http://www.nagano-nct.ac.jp/teacher/ezumi/