Simulation study of nonlocal plasma response in toroidal plasmas

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400538
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: National Institutes for Quantum and Radiological Science and Technology (2016); Japan Atomic Energy Agency (2014-2015)
• Principal Investigator: Miyato Naoaki 国立研究開発法人量子科学技術研究開発機構, 六ヶ所核融合研究所 核融合炉システム研究開発部, 上席研究員(定常) (80370477)
• Co-Investigator(Renkei-kenkyūsha): YAGI Masatoshi 国立研究開発法人量子科学技術研究開発機構, 六ヶ所核融合研究所 核融合炉システム研究開発部, 次長 (70274537)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 核融合プラズマ / 非線形 / 非局所 / マルチスケール

Outline of Final Research Achievements

Our simulation study revealed detailed mechanism of nonlocal plasma response triggered by transient particle source in tokamak plasmas. Both nonlinear couplings and toroidal couplings between long wavelength components of pressure perturbations are indispensable for the nonlocal response. Besides, we studied effects of ion micro-turbulence on the nonlocal response. It is found that the turbulence tends to prevent the nonlocal response because it rapidly dissipate the long wavelength components of pressure perturbations necessary for the nonlocal response.

Free Research Field

プラズマ科学