Correlation between plasma transport and turbulence with electron heating
| Project/Area Number |
16K06947
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
Yoshida Maiko 国立研究開発法人量子科学技術研究開発機構, 那珂核融合研究所 先進プラズマ研究部, 上席研究員(定常) (20391261)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 電子加熱 / 輸送と閉じ込め / 乱流輸送 / 磁気シア / 熱輸送 / プラズマ制御 / エネルギー閉じ込め / 乱流 / プラズマ・核融合 |
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| Outline of Final Research Achievements |
Plasma heating in ITER and DEMO reactors is mainly electron heating by alpha particles generated by fusion reaction. In many devices, including JT-60, electron cyclotron heating (ECH) has been observed to cause degradation of energy confinement and changes in plasma rotation. In this study, we conducted experiments on transport and fluctuations of ECH injection in various magnetic shear discharges of DIII-D device, and clarified under what conditions transport degradation is suppressed. In addition, by comparing the experimental results with the predictions by the theoretical model, an explanation was given as to the cause.
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| Academic Significance and Societal Importance of the Research Achievements |
多くの装置で乱流輸送研究はなされているが、本研究のように高性能プラズマで且つ電子加熱が強い領域での、電子系乱流とイオン系乱流に着目した実験研究はこれまでに例が無く、イオン系及び電子系乱流揺動計測、プラズマ空間分布の時間変化、定常及び非定常輸送解析、局所的及び大域的運動論モデルといった、包括的な研究アプローチをとる本研究を皮切りに、電子加熱時の輸送物理の理解が飛躍的に向上し、乱流シミュレーション・コード開発に貢献すると期待される。検証したモデルにより、より精度の高いプラズマ予測に貢献でき、運転シナリオ開発に貢献できる。
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Report
(5 results)
Research Products
(31 results)
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[Journal Article] Predictions of toroidal rotation and torque sources arising in non-axisymmetric perturbed magnetic fields in tokamaks2017
Author(s)
M. Honda, S. Satake, Y. Suzuki, K. Shinohara, M. Yoshida, E. Narita, M. Nakata, N. Aiba, J. Shiraishi, N. Hayashi, G. Matsunaga, A. Matsuyama and S. Ide
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Journal Title
Nuclear Fusion
Volume: 57
Issue: 11
Pages: 116050-116050
DOI
Related Report
Peer Reviewed
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[Journal Article] Magnetic shear effects on plasma transport and turbulence at high electron to ion temperature ratio in DIII-D and JT-60U plasmas2017
Author(s)
M. Yoshida, G. R. McKee, M. Murakami, B. A. Grierson, M. Nakata, E. M. Davis, A. Marinoni, M. Ono, T. L. Rhodes, C. Sung, L. Schmitz, C. C. Petty9, J.R. Ferron, F. Turco, A. M. Garofalo, C. T. Holcomb, C. M. Collins, W. M. Solomon
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Journal Title
Nuclear Fusion
Volume: 57
Issue: 5
Pages: 1-10
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Magnetic shear effects on plasma transport and turbulence at high electron to ion temperature ratio in DIII-D and JT-60U plasmas2016
Author(s)
M. Yoshida, G. R. McKee, M. Murakami, C. M. Collins, E. M. Davis, J. R. Ferron, A. M. Garofalo, B. A. Grierson, C. T. Holcomb, A. Marinoni, M. Nakata, M. Ono, C. C. Petty, T. L. Rhodes, L. Schmitz, W. M. Solomon, C. Sung, F. Turco
Organizer
26th IAEA Fusion Energy Conference
Place of Presentation
Kyoto, Japan
Year and Date
2016-10-17
Related Report
Int'l Joint Research
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[Presentation] Investigation of Sustainable Reduced-Power non-inductive Scenarios on JT-60SA2016
Author(s)
M. Romanelli, P. Aresta-Belo, G. Corrigan, L. Garzotti, D. Harting, F. Koechl, S. Saarelma, S. Wiesen, M. Wischmeier, R. Zagórski, T. Bolzonella, L. Pigatto, J. Garcia, P. Maget, E. de la Luna, N. Hayashi, T. Nakano, S. Ide, M. Yoshida, H. Urano
Organizer
26th IAEA Fusion Energy Conference
Place of Presentation
Kyoto, Japan
Year and Date
2016-10-17
Related Report
Int'l Joint Research
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[Presentation] Physics and modeling of toroidal rotation and torque sources in JT-60U2016
Author(s)
M. Honda, M. Yoshida, S. Satake, Y. Suzuki, N. Hayashi, K. Shinohara, A. Matsuyama, K. Kamiya, G. Matsunaga, S. Ide, H. Urano and M. Nakata
Organizer
18th International Congress on Plasma Physics
Place of Presentation
Kaohsiung, Taiwan
Year and Date
2016-06-27
Related Report
Int'l Joint Research / Invited
