Simultaneous measurements of plasma pressure, rotation and current density profiles using Lithium beam probe

• Project/Area Number: 19686056
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: KAMIYA Kensaku Japan Atomic Energy Agency, 核融合研究開発部門, 研究副主幹 (60360426)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥25,610,000 (Direct Cost: ¥19,700,000、Indirect Cost: ¥5,910,000); Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2007: ¥22,490,000 (Direct Cost: ¥17,300,000、Indirect Cost: ¥5,190,000)
• Keywords: プラズマ核融合 / 超精密計測 / リチウムビーム / ゼーマン偏光分光 / 境界輸送障壁 / トカマク / 周辺電流 / 安定性 / LiBP / CXRS / Hモード / ELMs / JT-60U / 電流分布 / イオン温度 / 輸送障壁 / ELM / ゼーマン効果 / 荷電交換分光 / 周辺密度 / 周辺温度 / 周辺回転 / 同時計測 / 周辺安定性 / ペデスタル

Research Abstract

Simultaneous measurements of the magnetic field pitch angle, ion temperature, rotation, electron density and its fluctuation in the plasma edge region are obtained by using Zeeman polarimetry, Charge eXchange Recombination Spectroscopy (CXRS) and Beam Emission Spectroscopy (BES) with a 10keV Li-beam probing system on JT-60U. The diagnostic has 20-ch viewing chords covering the plasma peripheral region of normalized minor radius r/a ~0.8-1 with a spatial resolution of up to ~1cm. The edge current density profile with the local peak at the plasma edge has been identified in the H-mode plasma, which is correlated with large pressure gradient in the pedestal region.

Research Products

• [Journal Article] Zeeman polarimetry measurement for edge current density determination using Li-beam probe on JT-60 (2010)
  • Author(s): K. Kamiya, T. Fujita, A. Kojima, H. Kubo
  • Journal Title: Review of Scientific Instruments Vol.81
  • Peer Reviewed
• [Journal Article] Zeeman polarimetry measurement for edge current density determination using Li-beam probe on JT-60 (2010)
  • Author(s): K.Kamiya
  • Journal Title: Review of Scientific Instruments 81
  • Peer Reviewed
• [Journal Article] Edge localized modes: recent experimental findings and related issues (2007)
  • Author(s): K. Kamiya, et al.
  • Journal Title: Plasma Phys. Control. Fusion Vol.49
  • Peer Reviewed
• [Journal Article] Edge localized modes: recent experimental findings and related issues (2007)
  • Author(s): K. Kamiya
  • Journal Title: Plasma Phys. Control. Fusion 49
  • Peer Reviewed
• [Presentation] JT-60UにおけるLiビームを用いたゼーマン偏光分光による周辺電流分布計測 (2009)
  • Author(s): 神谷健作
  • Organizer: プラズマ・核融合学会第26回年会
  • Place of Presentation: 京都
  • Year and Date: 2009-12-04
• [Presentation] JT-60UにおけるLiビームを用いたゼーマン偏光分光による周辺電流分布計測 (2009)
  • Author(s): 神谷健作
  • Organizer: プラズマ・核融合学会 第26回年会
  • Place of Presentation: 京都市国際交流会館(京都)
  • Year and Date: 2009-12-04
• [Presentation] Edge current density measurement using Li-beam on JT-60U (2008)
  • Author(s): K. Kamiya
  • Organizer: American Physical Society. 50th Annual Meeting of the Division of Plasma Physics
  • Place of Presentation: Texas, U.S.A.
  • Year and Date: 2008-11-20
• [Presentation] ELM control and physics on JT-60U (2008)
  • Author(s): K. Kamiya
  • Organizer: IEA Large Tokamak workshop on "Control of ELMs and RWM"(W67)
  • Place of Presentation: Naka, Japan
  • Year and Date: 2008-02-26
• [Presentation] Edge current density measurement using Li-beam on JT-60U (2008)
  • Author(s): K. Kamiya
  • Organizer: 50th Annual Meeting of the Division of Plasma Physics of APS
  • Place of Presentation: Dallas, Texas, USA
• [Presentation] ELM control and physics on JT-60U (2008)
  • Author(s): K. Kamiya
  • Organizer: IEA Large Tokamak workshop on ゛Control of ELMs and RWM゛(W67)
  • Place of Presentation: ITER conference room, Naka Fusion Institute, JAEA
• [Remarks]
  • URL: http://www-jt60.naka.jaea.go.jp/index.html