ヘリカルリップルに捕捉された高速電子によるMHD不安定性励起実験

使用被困在螺旋波纹中的快速电子进行 MHD 不稳定性激发实验

• 批准号: 20656150
• 负责人: 磯部 光孝
• 金额: $ 1.73万
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20656150/
• 关键词: CHS; LHD; MHD不安定性; ECRH; ヘリカルリップル; 高速電子; 歳差ドリフト運動

本研究では、三次元磁場配位を持つ大型ヘリカル装置(LHD)プラズマ中に、二次元軸対称配位のトカマクには存在しないヘリカルリップルに捕捉された非熱化高エネルギー電子を生成し、トロイダルアルヴェン固有モード(TAE)や高速粒子モード(EPM)に代表される高速粒子励起MHD不安定性が励起されるか否を検証することを目的としている。LHDプラズマにおけるヘリカルリップル捕捉高エネルギー電子の生成は、第二高調波電子サイクロトロン共鳴加熱(ECRH)により行った。具体的には、77GHzジャイロトロンを3機使用し、第二高調波共鳴層を一対のヘリカルコイルの谷間(磁場強度においてヘリカル磁場リップルの底に対応する)に置くようにトロイダル磁場強度を設定した。その時、磁気プローブにて検知可能な振幅の磁気揺動が観測された。不安定性種の同定には、未だ至っていないが、幾つかの周波数の異なる不安定性の励起が確認され、一つは、バースト的に出現するEPM(～150kHz帯)が、また、低周波数帯(～20kHz帯)に、Beta-induced Alfven-Acoustic Mode(所謂、BAAE)と考えられる不安定性が見出された。LHDにおける上記の実験に加えて、コンパクトヘリカルシステム(CHS)の第二高調波ECRHプラズマ放電における高速電子励起MHD不安定性の結果を含め、The 11^<th> IAEA Technical Meeting on Energetic Particels in Magnetic Confinement Systems, 20^<th> Anniversary Meeting(21-23 September 2009・Kyiv, Ukraine)にて、口頭発表を行い、会議論文として纏めた。

In this study, the three-dimensional magnetic field coordination device (LHD) is used in the large-scale equipment, and the second-dimensional coordination device is used in this study. in this study, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field coordination device, the three-dimensional magnetic field Innate particles (TAE), high-speed particles (EPM), on behalf of high-speed particles, stimulate MHD uneasiness and cause anxiety. The LHD system is responsible for capturing the generation of high-speed and high-voltage electrons, and the second-highest-wave power generation is responsible for increasing the number of high-voltage (ECRH) applications. The specific equipment, 77GHz equipment, and the second high wave are used to set the setting of the intensity of the magnetic field in the valley (the strength of the magnetic field is high, the strength of the magnetic field is high, and the strength of the magnetic field is low. During a short period of time, the magnetic system is aware of the possible amplitude of the magnetic signal. The determination of EPM (~ 150kHz), the detection of low cycle (~ 20kHz), the detection of low cycle (~ 20kHz), the detection of low cycle number (~ QR), low cycle wave number (~ cycle), low cycle wave number (~ 20kHz wave), low cycle wave number (~ cycle), low cycle wave number (~ 20kHz), low cycle wave number (~ cycle), low cycle wave number (~ 20kHz), low cycle wavenumber (~ 20kHz), and so on. The results of the LHD alarm test, The 11 ^ < th > IAEA Technical Meeting on Energetic Particels in Magnetic Confinement Systems, 20 ^ < th > Anniversary Meeting (21-23 September 2009 Kyiv, Ukraine) cycles, speech tables, and meetings are included in the results of the MHD alarm test for the second highest wave of the high-speed computer, such as the MHD alarm, the second-highest wave, the high-speed computer, the high-speed computer, the receiver, the speaker, the operator, the speaker, the

项目成果

Energetic-particle modes driven by suprathermal electrons in helical devices CHS and LHD

螺旋装置 CHS 和 LHD 中超热电子驱动的高能粒子模式

• 发表时间: 2009
• 期刊: Proceedings of 11^<th> IAEA Technical Meeting on Energetic Particles in Magnetic Confinement Systems
• 作者: M.Isobe;K.Toi;et al.
• 通讯作者: et al.

Energetic-particle modes driven by supra-thermal electrons in second harmonic ECRH plasmas of the Compact Helical System

紧凑螺旋系统二次谐波 ECRH 等离子体中超热电子驱动的高能粒子模式

• 发表时间: 2008
• 期刊: Proceedings of 35^<th> EPS Conference on Plasma Physics 32
• 作者: M. Isobe;K. Toi Y. Yoshimura;et al.
• 通讯作者: et al.

Energetic-particle modes driven by suprathermal electrons produced by off-axis second harmonic ECRH in compact helical system (CHS)

• DOI: 10.1088/0029-5515/50/8/084007
• 发表时间: 2010-08
• 期刊: Nuclear Fusion
• 影响因子: 3.3
• 作者: M. Isobe;K. Toi;Y. Yoshimura;A. Shimizu;T. Akiyama;K. Ida;T. Minami;C. Suzuki;S. Okamura