Instability in the Frequency Range of Alfven Eigenmodes Driven by Negative-Ion-Based Neutral Beams in JT-60U
-
- SHINOHARA Kouji
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
-
- ISHIKAWA Masao
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
-
- TAKECHI Manabu
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
-
- KUSAMA Yoshinori
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
-
- TODO Yasushi
- National Institute for Fusion Science
-
- GORELENKOV Nikolai
- Princeton Plasma Physics Laboratory
-
- CHENG Chio
- Princeton Plasma Physics Laboratory
-
- FUKUYAMA Atsushi
- Department of Nuclear Engineering
-
- KRAMER Gerrit
- Princeton Plasma Physics Laboratory
-
- NAZIKIAN Raffi
- Princeton Plasma Physics Laboratory
-
- MATSUNAGA Go
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
-
- OZEKI Takahisa
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
書誌事項
- タイトル別名
-
- Instability in the Frequency Range of Alfvén Eigenmodes Driven by Negative-Ion-Based Neutral Beams in JT-60U
- Instability in the Frequency Range of Alfvén Eigenmodes Driven by Negative-Ion-Based Neutral Beams in JT-60U
この論文をさがす
説明
Alfvén eignemode experiments have been carried out by using the negative-ion-based neutral beam in JT-60U. For bursting instabilities in the frequency range of Alfvn Eigenmodes, two types of mode activity have been observed. In one type called Abrupt Large-amplitude Event (ALE), enhanced transport of the energetic ions was detected. The enhanced transport showed the clear energy dependence based on measurements performed using a natural diamond detector. In another type of bursting event called the fast Frequency Sweeping (fast FS) mode, frequency up-down chirping is observed on the time-scale of a few ms, much faster than equilibrium changes in the background plasma. This frequency chirping was well reproduced by the non-linear simulation code, MEGA, for magnetohydrodynamics (MHD) with energetic particles. The slow up-frequency sweeping of the Reversed-Shear-induced Alfvén Eigenmode (RSAEs), due to the slow evolution of qmin was also observed. These experiments were analyzed by using the NOVA-K code. It is shown that the most unstable modes are localized around the minimum in the magnetic safety factor (qmin) in the analysis.
収録刊行物
-
- プラズマ・核融合学会誌
-
プラズマ・核融合学会誌 81 (7), 547-552, 2005
社団法人 プラズマ・核融合学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282681488344576
-
- NII論文ID
- 110006281952
-
- NII書誌ID
- AN10401672
-
- COI
- 1:CAS:528:DC%2BD2MXps1Ciur4%3D
-
- NDL書誌ID
- 7434837
-
- ISSN
- 09187928
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDLサーチ
- Crossref
- NDLデジコレ(旧NII-ELS)
- CiNii Articles
- OpenAIRE
-
- 抄録ライセンスフラグ
- 使用不可