2023 Fiscal Year Final Research Report
Development of advanced millimeter wave diagnostic system for high energy ions in fusion plasmas and control for self-burning plasmas
| Project/Area Number |
19KK0073
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| Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 14:Plasma science and related fields
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
藤井 恵介 京都大学, 工学研究科, 助教 (10637705)
矢内 亮馬 核融合科学研究所, 研究部, 助教 (40824743)
關 良輔 核融合科学研究所, 研究部, 助教 (80581066)
釼持 尚輝 核融合科学研究所, 研究部, 助教 (80781319)
奴賀 秀男 核融合科学研究所, 研究部, 助教 (10625429)
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| Project Period (FY) |
2019-10-07 – 2024-03-31
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| Keywords | 核融合プラズマ / 高エネルギーイオン / 協同トムソン散乱計測 / ミリ波 / トモグラフィ / 深層学習 / GAN / 熱・粒子輸送 |
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| Outline of Final Research Achievements |
The 3.5 MeV-α particles produced by the DT reaction in fusion plasmas heat fuel ions and support self-sustained plasma burning. The objective of this study is to establish a method for measuring the velocity distribution function of energetic ions in 2D velocity space in fusion plasmas by millimeter-wave Collective Thomson Scattering (CTS) measurements, and international joint experiments and development of a CTS diagnostic were conducted with the Max Planck Institute for Plasma Physics in Germany.
We have improved the accuracy of the measurements to establish a method to evaluate the velocity distribution of energetic ions and multiple ion species in CTS measurements. Significant progress was made mainly in improving the measurement position accuracy, developing an in-situ absolute calibration method for the millimeter-wave receiver, and analyzing the velocity-space tomography of the measured CTS spectra.
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| Free Research Field |
核融合
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| Academic Significance and Societal Importance of the Research Achievements |
カーボンニュートラルとエネルギー問題の解決に向け，世界中で核融合研究が進められている．本研究は核融合炉のプラズマ燃焼シナリオを検証するために，先進ミリ波散乱計測の開発をドイツ，デンマーク，及び米国と国際共同研究で進めた．ミリ波研究の国際拠点を形成し，学術的成果を得ることが出来た．米国での招待講演や国際雑誌のEditor’s Pick論文として学術的に価値があり，高い注目度の研究として評価された．CTS計測やプラズマ加熱に必要なジャイロトロン開発をスタートアップ企業と実施し，国際共同研究として社会実装につながる成果が得られた．
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