FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Modifications to the edge radial electric field by angular momentum injection in JT-60U and their implication for pedestal transport

K. Kamiya, M. Honda, N. Miyato, H. Urano, M. Yoshida, Y. Sakamoto, G. Matsunaga, N. Oyama, Y. Koide, Y. Kamada2012年被引用 10Nuclear FusionIF 3出版社

The first detailed measurements of ion-impurity dynamics for NBI-heated ELMy H-modes at the edge of the JT-60U tokamak are reported. We investigated the ability of external momentum/power input to modify and control the radial electric field, Er, and pedestal structures. The relationship between Er and pedestal structures of ion-impurity density, ni, and temperature, Ti, during the ELMing H-mode phase for various momentum input directions (i.e. co-, balanced- and counter-NBI) and input powers from perpendicular NBI are compared with the ELM-free phase. The observed trend is that the edge Er-well width increases in the co-NBI discharge, while the Er value at the base of the Er-well becomes more negative in the counter-NBI discharge. The scale length for both ni and Ti in the pedestal is ∼2 cm and values are ∼1 for both ELM-free and ELMing phases with different magnitudes of Er (and/or Er shear). Characteristics of the turbulent density fluctuation, in addition to a uniform toroidal MHD oscillation (i.e. n = 0), during both ELM-free and ELMing phases are also reported.

日本語訳

JT-60Uトカマクの周辺部におけるNBI加熱ELMy Hモードでの不純物イオンダイナミクスの最初の詳細な測定が報告される。我々は、外部運動量/パワー入力が動径電場 Er とペデスタル構造を変更・制御する能力を調査した。ELMing Hモード位相中における、様々な運動量入力方向(すなわち、co-、balanced-、counter-NBI)および垂直NBIからの入力パワーに対する、Er と不純物イオン密度 ni および温度 Ti のペデスタル構造との関係は、ELM-free位相と比較される。観測された傾向は、co-NBI放電ではエッジの Er 井戸の幅が増加し、counter-NBI放電では Er 井戸の底での Er 値がより負になることである。ペデスタルにおける ni と Ti の両方のスケール長は ∼2 cm であり、値は、異なる Er(および/または Er シア)の大きさを持つ ELM-free および ELMing の両位相で ∼1 である。さらに、ELM-free および ELMing の両位相における、一様なトロイダルMHD振動(すなわち n = 0)に加えて、乱流密度揺動の特性も報告される。

wiki

PedestalJT-60URadial electric field
この論文にはまだAI要約がありません。

関連論文

Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade

2017Plasma Physics and Controlled Fusion

High-accuracy characterization of the edge radial electric field at ASDEX Upgrade

2013Nuclear Fusion

High resolution density pedestal measurements during edge localized modes by short-pulse reflectometry in the TCV tokamak

2021Plasma Physics and Controlled Fusion

Reduction of ion thermal transport due to non-uniformity effects of the radial electric field at the edge of the JT-60U tokamak

2017Nuclear Fusion

Pedestal particle balance studies in JET-ILW H-mode plasmas

2023Plasma Physics and Controlled Fusion

Temporal evolution of H-mode pedestal in DIII-D

2009Nuclear Fusion

Turbulence, flows and edge localized mode (ELM) dynamics in limiter H-mode plasmas in TEXTOR

2010Plasma Physics and Controlled Fusion

Plasma shaping and its impact on the pedestal of ASDEX Upgrade: edge stability and inter-ELM dynamics at varied triangularity

2018Nuclear Fusion

Evolution of the H-mode edge pedestal between ELMs

2011Nuclear Fusion

Characteristics and control of the type I edge localized mode in JT-60U

2011Nuclear Fusion