球状トカマクQUESTのIPN配位における遠方スクレイプオフ層の熱流束とプラズマ流

• 恩地 拓己

  九州大学応用力学研究所

書誌事項

タイトル別名

• Observation of heat flux and plasma flow in the far scrape-off layer of the IPN configuration in QUEST

抄録

Heat flux and plasma flow in the far scrape off layer (far-SOL) are examined in the inboard poloidal null (IPN) configuration on the spherical tokamak QUEST. High heat flux (> 1 MW/m^2) and super-sonic flow (M > 1) in far-SOL arise in current ramp-up phase. They are suppressed after closed flux surface is generated. In quasi-steady state with plasma current I_p ≈ 20 kA, sawtooth-like oscillation of I_p with 20 Hz occurs spontaneously. Heat flux and subsonic plasma flow in far-SOL are well correlated to the I_p-oscillation. Limit-cycle characteristic on the M-I_p diagram indicates that there is a close relationship between core and far-SOL in the IPN configuration.

収録刊行物

• 九州大学応用力学研究所所報

  九州大学応用力学研究所所報 149 47-50, 2015-09

  九州大学応用力学研究所

キーワード

• 球状トカマク
• スクレイプオフ層
• 熱流束
• プラズマ流

詳細情報

• CRID: 1390853649694771584
• NII論文ID: 120005817867
• NII書誌ID: AA11459359
• DOI: 10.15017/1660017
• HANDLE: 2324/1660017
• ISSN: 13455664
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles
• 抄録ライセンスフラグ: 使用可