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

2014 Fiscal Year Final Research Report

• 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
• Keywords: 抵抗性壁モード

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.

Free Research Field

プラズマ物理