2013 Fiscal Year Final Research Report
Simultaneous imaging diagnostics at two layers of the edge region of the fusion plasma for studying edge instabilities.
| Project/Area Number |
23340184
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
OHDACHI Satoshi 核融合科学研究所, ヘリカル研究部, 准教授 (00270489)
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| Co-Investigator(Renkei-kenkyūsha) |
WATANABE Kiyomasa 核融合科学研究所, ヘリカル研究部, 教授 (00249963)
SUZUKI Yasuhiro 核融合科学研究所, ヘリカル研究部, 准教授 (20397558)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | MHD不安定性 / イメージング測定 |
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| Research Abstract |
Edge region of the magnetically confined fusion plasma is studied by the simultaneous two imaging diagnostics at two layers. One is using visible light and the other is using VUV light. By the improvement of the diagnostics for VUV light, measurement with higher frequency, up to 6k frame /sec has been achieved. In the edge localized mode study, deformation of the magnetic surface with poloidal mode number of m=2 has been observed. The phase of the deformation is fixed to the locally magnetic week location. After the modification of the flux surface, expulsion of the plasma piece has been observed from the deformed position has been observed.
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[Presentation] Determination of effective plasma boundary by existence of MHD instabilities excited in the edge stochastic layer of LHD2013
Author(s)
S. Ohdachi, Y. Suzuki, S. Sakakibara, K. Y. Watanabe, K. Ida1, M. Goto1, X. D. Du, Y. Narushima, Y. Takemura, H. Yamada and LHD Experiment Group
Organizer
The 12th Asia Pacific Physics Conference (APPC12) and The third Asia-Europe Physics Summit
Place of Presentation
nternational Conference Halls, Makuhari Messe Chiba, Japan
Year and Date
20130714-19
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