| 研究課題/領域番号 |
19J21339
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 補助金 |
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| 応募区分 | 国内 |
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| 審査区分 |
小区分14020:核融合学関連
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| 研究機関 | 東京大学 |
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研究代表者 |
Ahmadi Tara 東京大学, 工学系研究科, 特別研究員(DC1)
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| 研究期間 (年度) |
2019-04-25 – 2022-03-31
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| 研究課題ステータス |
完了 (2021年度)
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| 配分額 *注記 |
2,700千円 (直接経費: 2,700千円)
2021年度: 600千円 (直接経費: 600千円)
2020年度: 1,000千円 (直接経費: 1,000千円)
2019年度: 1,100千円 (直接経費: 1,100千円)
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| キーワード | Plasma reconstruction / Magnetic probes / MHD simulation / Magnetic configuration / Tokamak / Merging-compression / Nuclear fusion / Plasma heating / ion heating / Spherical tokamak / Abel inversion / reconstruction method / Helmholtz decomposition / double null formation / fusion plasma / Ion velocity |
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| 研究開始時の研究の概要 |
The main outlines of research this year will be the expansion of ion Doppler tomography system to new 3D system, study magnetic field fluctuations which is the reason of particle-wave interaction. The general point of this study will be understanding the physics behind the acceleration in special. Improving diagnostic system to measure plasma density will also be helpful during this year as the lack of plasma parameters limit the theory. Magnetic field fluctuation observation, wave analysis, detecting kinetic Alfven waves and their effects in particle's acceleration will be the main outlines.
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| 研究実績の概要 |
In 2021, we published results received from the 2D resistive MHD simulation conducted to study the role of the driving coils basic properties in maximizing the ion heating during the merging-compression and double-null merging startup methods. Right after, a question regarding the pressure balance during the flux rope formation and merging raised. The results of the 2D Hall MHD simulation showed that the internal toroidal magnetic field balances out the decreasing poloidal field which can be useful at the flux rope formation stage. After conducting multiple numerical studies, it became necessary to improve the quality of the experimental measurements by coupling the externally measured magnetic field values to the MHD simulation to calculate the internal plasma parameters which usually are unknown due to the high temperature of the core plasma. The results of these studies have been published in the various journals.
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| 現在までの達成度 (段落) |
令和3年度が最終年度であるため、記入しない。
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| 今後の研究の推進方策 |
令和3年度が最終年度であるため、記入しない。
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