Improvement in Plasma Heating at Higher-Density Region Using 106.4 GHz Electron Cyclotron Heating System for Compact Helical System

• Yoshimura Yasuo

  National Institute for Fusion Science

• Akiyama Tsuyoshi

  National Institute for Fusion Science

• Isobe Mitsutaka

  National Institute for Fusion Science

• Shimizu Akihiro

  National Institute for Fusion Science

• Suzuki Chihiro

  National Institute for Fusion Science

• Takahashi Chihiro

  National Institute for Fusion Science

• Nagaoka Kenichi

  National Institute for Fusion Science

• Nishimura Shin

  National Institute for Fusion Science

• Minami Takashi

  National Institute for Fusion Science

• Matsuoka Keisuke

  National Institute for Fusion Science

• Okamura Shoichi

  National Institute for Fusion Science

• Kubo Shin

  National Institute for Fusion Science

• Shimozuma Takashi

  National Institute for Fusion Science

• Igami Hiroe

  National Institute for Fusion Science

• Notake Takashi

  National Institute for Fusion Science

• Ohkubo Kunizo

  National Institute for Fusion Science

• Mutoh Takashi

  National Institute for Fusion Science

抄録

A 106.4 GHz electron cyclotron heating (ECH) system for compact helical system (CHS) has been newly constructed. Initial experiments to confirm the system’s performance showed good controllability of beam direction and polarization for optimized heating. In the beam direction and polarization scan experiments, on-axis beam injection with second-harmonic X-mode polarization resulted in the highest stored energy and central electron temperature. Additional heating becomes possible for the plasmas sustained by neutral beam injection with a density higher than the plasma cutoff density of 3.5×10¹⁹ m⁻³ for the 53.2 GHz waves of the existing ECH system. Applying the 106.4 GHz heating waves extends the CHS plasma parameter to a high electron temperature of the keV order at a high density up to the second-harmonic X-mode cutoff density of 7×10¹⁹ m⁻³.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 75 (11), 114501-, 2006

  一般社団法人 日本物理学会

キーワード

• electron cyclotron heating
• high-density plasma
• cutoff
• compact helical system

詳細情報

• CRID: 1390282679165475840
• NII論文ID: 110004852761
• NII論文ID: 210000106406
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.75.114501
• BIBCODE: 2006JPSJ...75k4501Y
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 8537526
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8537526
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.75.114501
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可