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

Inter-ELM behaviour of the electron density and temperature pedestal in ASDEX Upgrade

A Burckhart, E Wolfrum, R Fischer, K Lackner, H Zohm, the ASDEX Upgrade Team2010年Plasma Physics and Controlled FusionIF 2.2出版社

The behaviour of the recovery of the electron temperature and density during individual ELM (edge localized mode) cycles has been examined closely for a series of type I ELMy H-mode discharges with different fuelling levels and medium collisionality. A characterization of the typical ELM recovery cycle has been established. Distinct phases have been observed in the build-up of the plasma edge profiles after their relaxation caused by the ELM crash. A thorough evaluation of ELM-synchronized data has revealed that the recovery of the electron temperature and density pedestals are correlated. A new behaviour has been discovered in the build-up phase of the plasma edge, during which the temperature stagnates while the density profile steepens. It was found that in some cases the ELM is triggered immediately after the recovery of the pressure profile, consistent with the expectations from edge ballooning theory, while in other cases all edge profiles reached their final shape a long time before the next ELM occurred. The theory that a delayed edge current induces the actual crash could not be confirmed; the current diffusion seems only to play a minor role in the edge of the plasma.

日本語訳

個々のELM(周辺局在モード)周期中の電子温度と密度の回復挙動が、異なる燃料供給量と中程度の衝突度を有する一連のタイプI ELMy Hモード放電について詳細に調べられた。典型的なELM回復周期の特性評価が確立された。ELMクラッシュによって引き起こされた緩和後のプラズマ周辺プロファイルの形成過程において、明確な位相が観察された。ELM同期データの徹底的な評価により、電子温度と密度のペデスタルの回復が相関していることが明らかになった。プラズマ周辺の形成過程において、温度が停滞する一方で密度プロファイルが急峻化するという新たな挙動が発見された。いくつかの場合では、圧力プロファイルの回復直後にELMが誘発され、これは周辺バルーニング理論からの予測と一致するが、他の場合では、すべての周辺プロファイルが次のELM発生のかなり前に最終形状に達した。遅延した周辺電流が実際のクラッシュを誘発するという理論は確認できなかった。電流拡散はプラズマ周辺においてわずかな役割しか果たしていないように思われる。

装置

asdex-upgrade高精度(タイトル一致)

wiki

ASDEXEdge localized modeASDEX UpgradePedestal
この論文にはまだAI要約がありません。

関連論文

Electron temperature and density profile evolution during the edge-localized mode cycle in ohmic and electron cyclotron-heated H-mode plasmas in TCV

2012Plasma Physics and Controlled Fusion

Characteristics of the edge localized mode in the JFT-2M H-mode

1991Nuclear Fusion

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

2017Plasma Physics and Controlled Fusion

Characterization of edge profiles and fluctuations in discharges with type-II and nitrogen-mitigated edge localized modes in ASDEX Upgrade

2011Plasma Physics and Controlled Fusion

ELM control strategies and tools: status and potential for ITER

2013Nuclear Fusion

Characteristics and scaling of energy and particle losses during Type I ELMs in JET H-modes

2002Plasma 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

Investigations on the edge kinetic data in regimes with type-I and mitigated ELMs at ASDEX Upgrade

2014Nuclear Fusion

Spatiotemporal response of plasma edge density and temperature to non-axisymmetric magnetic perturbations at ASDEX Upgrade

2012Plasma Physics and Controlled Fusion

Introduction to the ELMs special issue

2003Plasma Physics and Controlled Fusion