Development of High Power ECH Systems for High and ELM-like Heat Flux in GAMMA 10 Tandem Mirror

• MINAMI Ryutaro

  Plasma Research Center, University of Tsukuba

• IMAI Tsuyoshi

  Plasma Research Center, University of Tsukuba

• KARIYA Tsuyoshi

  Plasma Research Center, University of Tsukuba

• NUMAKURA Tomoharu

  Plasma Research Center, University of Tsukuba

• NAKABAYASHI Hidetaka

  Plasma Research Center, University of Tsukuba

• EGUCHI Taku

  Plasma Research Center, University of Tsukuba

• KAWARASAKI Ryo

  Plasma Research Center, University of Tsukuba

• NAKAZAWA Kazuhiro

  Plasma Research Center, University of Tsukuba

• ENDO Yoichi

  Plasma Research Center, University of Tsukuba

• HIRATA Mafumi

  Plasma Research Center, University of Tsukuba

• ICHIMURA Makoto

  Plasma Research Center, University of Tsukuba

• IKEZOE Ryuya

  Plasma Research Center, University of Tsukuba

• KATANUMA Isao

  Plasma Research Center, University of Tsukuba

• KOHAGURA Junko

  Plasma Research Center, University of Tsukuba

• NAKASHIMA Yousuke

  Plasma Research Center, University of Tsukuba

• OKI Kensuke

  Plasma Research Center, University of Tsukuba

• SAKAMOTO Mizuki

  Plasma Research Center, University of Tsukuba

• YOSHIKAWA Masayuki

  Plasma Research Center, University of Tsukuba

• GAMMA 10 Group

抄録

Development of high power gyrotrons and electron cyclotron heating (ECH) systems for the power modulation experiments in GAMMA 10 have been started in order to generate and control the high heat flux and to make the ELM (edge localized mode) like intermittent heat load pattern for divertor simulation studies. ECH for potential formation at the plug region (P-ECH) produces the electron flow with high energy along the magnetic filed line. From the power scaling of confining potential and electron flux in GAMMA 10, the higher ECH power generates the higher confinement potential and the higher electron flux. The peak heat-flux of more than 10 MW/m² has been obtained during the ECH injection within the available power of ECH. This value almost corresponds to the steady-state heat load of the divertor plate of ITER. However, we need substantial upgrade of the heating power to approach the ITER level ELM energy density. For this purpose, MW power gyrotrons at 28 GHz have been started and the development is undergoing efficiently in the ECH system upgrade program with the collaboration of Japan Atomic Energy Agency (JAEA).

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 8 (0), 2402081-2402081, 2013

  一般社団法人 プラズマ・核融合学会

キーワード

• ECH power modulation
• high heat flux
• ELM
• gyrotron
• GAMMA 10 tandem mirror

詳細情報

• CRID: 1390282680230122880
• NII論文ID: 130004685108
• DOI: 10.1585/pfr.8.2402081
• ISSN: 18806821
• Web Site: https://www.jstage.jst.go.jp/article/pfr/8/0/8_2402081/_pdf
• 本文言語コード: en
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