Establishment of empirical scaling of mode penetration in magnetic confined fusion plasma
Project/Area Number |
26420858
|
Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Nuclear fusion studies
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Research Institution | National Institute for Fusion Science |
Principal Investigator |
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Co-Investigator(Renkei-kenkyūsha) |
NARUSHIMA Yoshiro 核融合科学研究所, ヘリカル研究部, 助教 (40332184)
OHDACHI Satoshi 核融合科学研究所, ヘリカル研究部, 准教授 (00270489)
SUZUKI Yasuhiro 核融合科学研究所, ヘリカル研究部, 准教授 (20397558)
TAKEMURA Yuki 核融合科学研究所, ヘリカル研究部, 助教 (60705606)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
Keywords | ヘリカルプラズマ / MHD平衡 / MHD不安定性 / 摂動磁場 / ヘリカル装置 / 巨視的不安定性 / 磁気島 / 共鳴摂動磁場 |
Outline of Final Research Achievements |
Nested magnetic flux surface is required to maintain high performance plasma in magnetic confined fusion reactor. However, when an error field (perturbation field) due to misalignment of magnetic coils exceeds a certain value, MHD instability leading to major disruption is excited. In this study, we had investigated a plasma response to perturbation field in helical plasma in order to clarify the threshold of penetration of perturbation field to the plasma. Experiments show that the penetration threshold strongly depend on magnetic configuration such as magnetic shear, magnetic hill and so on, and the density dependence of the threshold largely changes when the plasma aspect ratio is changed. These results are quite different from those from tokamaks.
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Report
(4 results)
Research Products
(8 results)
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[Journal Article] Extension of high-beta plasma operation to low-collisionality regime2017
Author(s)
S. Sakakibara, K.Y. Watanabe, H. Funaba, Y. Suzuki, S. Ohdachi, K. Ida, K. Tanaka, T. Tokuzawa, T. Morisaki, M. Osakabe, Y. Takeiri and LHD Experiment Group1
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Journal Title
Nuclear Fusion
Volume: 57
Issue: 6
Pages: 066007-066007
DOI
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Characteristics of MHD instabilities limiting the beta value in LHD2015
Author(s)
S.Sakakibara, K.Y.Watanabe, Y.Takemura, M.Okamoto, S.Ohdachi, Y.Suzuki, Y.Narushima, K.Ida, M.Yoshinuma, K.Tanaka, T.Tokuzawa, I.Yamada, H.Yamada, Y.Takeiri and LHD Experiment Group
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Journal Title
Nuclear Fusion
Volume: 55
Issue: 8
Pages: 083020-083020
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Characteristics of MHD Instabilities Limiting Beta Value in LHD2014
Author(s)
S.Sakakibara, K.Y.Watanabe, Y.Takemura, M.Okamoto, S.Ohdachi, Y.Suzuki, Y.Narushima, K.Ida, M.Yoshinuma, K.Tanaka, T.Tokuzawa, I.Yamada, H.Yamada, Y. Takeiri and LHD Experiment Group1 1National
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Journal Title
Proceeding of IAEA-FEC
Volume: EX/P6-37
Pages: 1-8
NAID
Related Report
Acknowledgement Compliant
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[Presentation] MHD Instabilities Limiting Beta Value and the Interaction with Error Field2014
Author(s)
S.Sakakibara, Y. Takemura, K.Y. Watanabe, S. Ohdachi, Y. Narushima, K. Ichiguchi, K. Ida, K. Tanaka, T. Tokuzawa, I. Yamada, H. Yamada, Y. Takeiri and LHD Experiment Group
Organizer
Annual Meeting of American Physics Society
Place of Presentation
ニューオリンズ、米国
Year and Date
2014-10-27 – 2014-10-31
Related Report
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[Presentation] Characteristics of MHD Instabilities Limiting Beta Value in LHD2014
Author(s)
S.Sakakibara, K.Y.Watanabe, Y.Takemura, M.Okamoto, S.Ohdachi, Y.Suzuki, Y.Narushima, K.Ida, M.Yoshinuma, K.Tanaka, T.Tokuzawa, I.Yamada, H.Yamada, Y. Takeiri and LHD Experiment Group1 1National
Organizer
IAEA核融合会議
Place of Presentation
サンクトペテルブルグ、ロシア
Year and Date
2014-10-13 – 2014-10-18
Related Report
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[Presentation] ヘリカルプラズマにおける安定性ベータ限界の検証2014
Author(s)
榊原 悟, 武村勇輝, 渡邊清政, 鈴木康浩,大舘暁,成嶋吉朗, 居田克巳, 田中謙治,山田一博, LHD実験グループ
Organizer
核融合エネルギー連合講演会
Place of Presentation
つくば国際会議場
Year and Date
2014-06-19 – 2014-06-20
Related Report