Impact of kinetic effects on resistive wall modes in high-beta plasmas

• Project/Area Number: 24760708
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nuclear fusion studies
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: SHIRAISHI Junya 独立行政法人日本原子力研究開発機構, 核融合研究開発部門 那珂核融合研究所, 研究員 (60513223)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
• Keywords: 抵抗性壁モード / 運動論的MHD

Outline of Final Research Achievements

Stabilization of Resistive Wall Modes (RWMs) is a critical issue for advanced tokamaks since they limit the achievable beta value. In this study, we focus on the RWM stabilization by plasma rotation, and obtained the following findings: (1) centrifugal modification to MagnetoHydroDynamic (MHD) equilibrium brings about the RWM stabilization. (2) In rotating plasmas, the kinetic-MHD model should be generalized. The generalized kinetic-MHD model indicates that the rotation shear stabilizes the RWMs, which is qualitatively consistent with experimental results.

Research Products

• [Journal Article] Simulation of plasma current ramp-up with reduced magnetic flux consumption in JT-60SA (2015)
  • Author(s): T. Wakatsuki, T. Suzuki, N. Hayashi, J. Shiraishi, S. Ide, and Y. Takase
  • Journal Title: Plasma Physics and Controlled Fusion Volume: 57 Issue: 6 Pages: 065005-065005
  • DOI: 10.1088/0741-3335/57/6/065005
  • Peer Reviewed
• [Journal Article] Effects of centrifugal modification of magnetohydrodynamic equilibrium on resistive wall mode stability (2014)
  • Author(s): J. Shiraishi, N. Aiba, N. Miyato, and M. Yagi
  • Journal Title: Nuclear Fusion Volume: 54 Issue: 8 Pages: 083008-083008
  • DOI: 10.1088/0029-5515/54/8/083008
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] On Kinetic Resistive Wall Mode Theory with Sheared Rotation (2014)
  • Author(s): Junya Shiraishi, Naoaki Miyato, Go Matsunaga
  • Journal Title: Plasma and Fusion Research Volume: 9 Issue: 0 Pages: 3403027-3403027
  • DOI: 10.1585/pfr.9.3403027
  • NAID: 130005432252
  • ISSN: 1880-6821
  • Peer Reviewed
• [Journal Article] Impact of plasma rotation on the linear physics of resistive wall modes in tokamaks (2013)
  • Author(s): N.Aiba, J. Shiraishi and M. Hirota
  • Journal Title: Plasma Phys. Control. Fusion Volume: 55巻 Issue: 7 Pages: 74002-74002
  • DOI: 10.1088/0741-3335/55/7/074002
  • Peer Reviewed
• [Journal Article] Stabilization of Resistive Wall Modes by Magnetohydrodynamic Equilibrium Change Induced by Plasma Toroidal Rotation (2012)
  • Author(s): J. Shiraishi et al
  • Journal Title: Proceedings of the 24th IAEA Fusion Energy Conference Volume: IAEA-CN-197
• [Presentation] 流れをもつプラズマに対する接続理論の構築 (2015)
  • Author(s): 白石淳也
  • Organizer: 日本物理学会第70 回年次大会
  • Place of Presentation: 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 運動論的MHDモデルの拡張 (2014)
  • Author(s): J. Shiraishi, N. Miyato, and G. Matsunaga
  • Organizer: 平成26年度NIFS共同研究研究会 「MHDと流体力学における共鳴・分岐・構造形成の理論・シミュレーション研究」
  • Place of Presentation: 岐阜県土岐市
  • Year and Date: 2014-12-25 – 2014-12-26
• [Presentation] Analysis of JT-60U experiment by extended kinetic-MHD model (2014)
  • Author(s): J. Shiraishi, N. Miyato, and G. Matsunaga
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 新潟県新潟市
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Extension of kinetic-MHD model to include toroidal rotation shear effect and its application to stability analysis of resistive wall modes (2014)
  • Author(s): J. Shiraishi, N. Miyato, and G. Matsunaga
  • Organizer: 19th MHD Stability Control Workshop
  • Place of Presentation: アメリカ合衆国オーバーン
  • Year and Date: 2014-11-03 – 2014-11-05
  • Invited
• [Presentation] Extension of kinetic-magnetohydrodynamic model to include toroidal rotation shear effect and its application to stability analysis of resistive wall modes (2014)
  • Author(s): J. Shiraishi, N. Miyato, G. Matsunaga, M. Honda, N. Hayashi, and S. Ide
  • Organizer: The 25th IAEA Fusion Energy Conference
  • Place of Presentation: ロシアサンクトペテルブルグ
  • Year and Date: 2014-10-13 – 2014-10-18
• [Presentation] Extension of kinetic-magnetohydrodynamic model to include toroidal rotation shear effects and its application to stability analysis of resistive wall modes (2014)
  • Author(s): J. Shiraishi, N. Miyato, and G. Matsunaga
  • Organizer: Joint Meeting of US-Japan MHD Workshop and ITPA MHD Stability Topical Group
  • Place of Presentation: 岐阜県土岐市
• [Presentation] プラズマ回転を含むMHD安定性解析に基づいた高性能トカマクモデリング (2013)
  • Author(s): 白石淳也、本多充、林伸彦、井手俊介
  • Organizer: 第30回プラズマ・核融合学会年会
  • Place of Presentation: 東京都目黒区
• [Presentation] On kinetic resistive wall mode theory with sheared rotation (2013)
  • Author(s): J. Shiraishi, N. Miyato, and G. Matsunaga
  • Organizer: The 23rd International Toki Conference
  • Place of Presentation: 岐阜県土岐市
• [Presentation] Impact of Centrifugal Modification of Magnetohydrodynamic Equilibrium on Resistive Wall Mode Stability (2013)
  • Author(s): J. Shiraishi, N. Aiba, N. Miyato, and M. Yagi
  • Organizer: The 19th NEXT Workshop
  • Place of Presentation: 京都府京都市
• [Presentation] トロイダル回転による磁気流体力学平衡の変化がもたらす抵抗性壁モード安定化 (2013)
  • Author(s): 白石淳也
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島県東広島市
• [Presentation] Development of Resistive Wall Mode Analysis Code for Rotating Plasmas (2012)
  • Author(s): J. Shiraishi et al
  • Organizer: The 18th NEXT Workshop
  • Place of Presentation: 青森県六ヶ所村
• [Presentation] Stabilization of Resistive Wall Modes by Magnetohydrodynamic Equilibrium Change Induced by Plasma Toroidal Rotation (2012)
  • Author(s): J Shiraishi et al
  • Organizer: The 24th IAEA Fusion Energy Conference
  • Place of Presentation: アメリカ合衆国サンディエゴ
• [Presentation] Stabilization of Resistive Wall Modes by Magnetohydrodynamic Equilibrium Change Induced by Plasma Toroidal Rotation (2012)
  • Author(s): J Shiraishi et al
  • Organizer: 研究会 「マルチスケールMHD現象の理論・シミュレーション研究」
  • Place of Presentation: 岐阜県土岐市