2023 Fiscal Year Final Research Report

Elucidation and prediction of fusion plasma performance based on neoclassical and turbulent transport theory and simulation

Research Project

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Project/Area Number	19H01879
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Review Section	Basic Section 14020:Nuclear fusion-related
Research Institution	National Institute for Fusion Science
Principal Investigator	Hideo Sugama 核融合科学研究所, 研究部, 教授 (80202125)
Co-Investigator(Kenkyū-buntansha)	松岡清吉核融合科学研究所, 研究部, 助教 (10609986) 沼波政倫核融合科学研究所, 研究部, 教授 (40397203) 仲田資季核融合科学研究所, 研究部, 准教授 (40709440) 登田慎一郎核融合科学研究所, 研究部, 准教授 (60332186) 佐竹真介核融合科学研究所, 研究部, 准教授 (70390630)
Project Period (FY)	2019-04-01 – 2024-03-31
Keywords	核融合プラズマ / 新古典輸送 / 乱流輸送 / 運動論的シミュレーション
Outline of Final Research Achievements	By constructing and improving theoretical models and simulation codes, we have contributed to elucidating the physical mechanisms of particle, heat energy, and momentum transport phenomena in magnetically confined fusion plasmas and improving their quantitative prediction accuracy. We have developed and extended the basic theory, large-scale simulation codes, and turbulence models for transport analysis. We have also validated and improved the theoretical models and simulation codes by comparing them with experimental results. We have successfully performed simulations based on drift and gyrokinetic models to analyze neoclassical and turbulent transport processes in plasmas in three-dimensional magnetic field configurations, advancing qualitative and quantitative understanding of various effects of background electric fields, zonal flows, multiple ion species, hydrogen isotopes, and trapped electrons on plasma confinement.
Free Research Field	核融合プラズマ理論シミュレーション
Academic Significance and Societal Importance of the Research Achievements	無尽蔵にある資源や地球温暖化対策の観点から、核融合は究極のエネルギー源として、その早期実現が期待されている。一方、核融合プラズマは乱流輸送などの複雑な物理現象を包含し、その物理機構の解明や定性的・定量的理解は学術的観点からも非常に興味深い研究対象である。本研究によって、核融合プラズマ輸送過程に対する理論モデルやシミュレーションコードの構築・改良が進展し、核融合プラズマ性能の予測精度の向上や、普遍的かつ複雑なプラズマ現象の物理的理解の深化に貢献した。