Study of two diminutional structure of meso-scale turbulence with directional beam emission spectroscopy
| Project/Area Number |
23246164
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
IDA Katsumi 核融合科学研究所, ヘリカル研究部, 教授 (00184599)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHINUMA Mikirou 核融合科学研究所, ヘリカル研究部, 助教 (20323058)
KOBAYASHI Tatsuya 核融合科学研究所, ヘリカル研究部, 助教 (30733703)
MOON Chanho 核融合科学研究所, ヘリカル研究部, COE研究員 (50734753)
大石 鉄太郎 核融合科学研究所, ヘリカル研究部, 助教 (80442523)
門 信一郎 東京大学, 工学(系)研究科, 准教授 (10300732)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAHASHI Hiromi 核融合科学研究所, ヘリカル研究部, 助教 (00462193)
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| Research Collaborator |
ONO Makoto 総合研究大学院大学, 物理科学研究科
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥49,010,000 (Direct Cost: ¥37,700,000、Indirect Cost: ¥11,310,000)
Fiscal Year 2014: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2013: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2012: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2011: ¥21,450,000 (Direct Cost: ¥16,500,000、Indirect Cost: ¥4,950,000)
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| Keywords | プラズマ物理 / 乱流計測 / ビーム分光 |
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| Outline of Final Research Achievements |
Two dimensional structure of plasma density fluctuations was studied using the beam emission spectroscopy in Large Helical Device (LHD). By making the observation volume slit, the directional sensitivity for radial or poloidal direction has been improved. The time-space correlation between density and magnetic fluctuations shows clear peaks with the frequency peak of 1.5kHz and 3kHz in the high-beta discharge in LHD. In poloildal direction, the fluctuations propagates in the direction of ExB rotation and this fluctuations was identified to be Edge Harmonic Oscillation (EHO) .
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Report
(5 results)
Research Products
(26 results)
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[Journal Article] Topology bifurcation of a magnetic flux surface in toroidal plasmas2015
Author(s)
K Ida, T Kobayashi, S Inagaki, Y Suzuki, S Sakakibara, K Itoh, H Tsuchiya, C Suzuki, M Yoshinuma, Y Narushima, M Yokoyama, S-I Itoh
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Journal Title
Plasma Physics and Controlled Fusion
Volume: 57
Issue: 1
Pages: 014036-014036
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Observations of Transitions Between Nested and Stochastic Magnetic Islands in DIII-D and LHD2014
Author(s)
K.Ida, T.Evans, T.Kobayashi, S.Ohdachi, Y.Suzuki, M.Shafer, S.Inagaki, M.E. Austin, B.Grierson, R.Groebner, D.Orlov, DIII-D and LHD experiment group
Organizer
56th Annual Meeting of the APS Division of Plasma Physics
Place of Presentation
New Orleans, U.S.A
Year and Date
2014-10-27 – 2014-10-31
Related Report
Invited
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[Presentation] Impurity transport in LHD2014
Author(s)
K.Ida, and LHD experiment group
Organizer
Wendelstein Seminar
Place of Presentation
IPP Greifswald, Max-Planck-Institut für Plasmaphysik
Year and Date
2014-07-02
Related Report
Invited
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[Presentation] Topology bifurcation of a magnetic flux surface in toroidal plasmas2014
Author(s)
K Ida, T Kobayashi, S Inagaki, Y Suzuki, S Sakakibara, K Itoh, H Tsuchiya, C Suzuki, M Yoshinuma, Y Narushima, M Yokoyama, A Shimizu, S-I Itoh
Organizer
41st European Physical Society conference
Place of Presentation
Berlin, Germany
Year and Date
2014-06-23 – 2014-06-27
Related Report
Invited
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