Physics of Heliotron J Confinement

• SANO Fumimichi

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• MIZUUCHI Tohru

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• NAGASAKI Kazunobu

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• HANATANI Kiyoshi

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• OKADA Hiroyuki

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• NAKAMURA Yuji

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• MINAMI Takashi

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• KOBAYASHI Shinji

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• YAMAMOTO Satoshi

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• KONOSHIMA Shigeru

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• OHSHIMA Shinsuke

  Kyoto University Pioneering Research Unit for Next Generation, Kyoto 611-0011, Japan

• TAKEUCHI Masaki

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• IJIRI Yoshiyuki

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• YAGUCHI Keiji

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• SENJU Tohru

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• SHIBANO Masashi

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• TOHSHI Kiyoshi

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• SAKAMOTO Kinzou

  Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

• MATSUYAMA Akinobu

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• MUKAI Kiyofumi

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• MINAMI Keishi

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• KISHI Shintarou

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• LEE Hyunyong

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• TAKABATAKE Yu

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• YASHIRO Hiroaki

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• YAMAMOTO Kento

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• NOMURA Kohta

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• SUWA Masashige

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• YOSHINO Hayao

  Graduate School of Energy Science, Kyoto University, Kyoto 611-0011 , Japan

• MURAKAMI Sadayoshi

  Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan

• MUTOH Takashi

  National Institute for Fusion Science, Gifu 509-5292, Japan

• TAKEIRI Yasuhiko

  National Institute for Fusion Science, Gifu 509-5292, Japan

• NAGAOKA Kenichi

  National Institute for Fusion Science, Gifu 509-5292, Japan

• OKAMURA Shoichi

  National Institute for Fusion Science, Gifu 509-5292, Japan

• WATANABE Kiyomasa Y.

  National Institute for Fusion Science, Gifu 509-5292, Japan

• YOKOYAMA Masayuki

  National Institute for Fusion Science, Gifu 509-5292, Japan

• SUZUKI Yasuhiro

  National Institute for Fusion Science, Gifu 509-5292, Japan

• YOSHIMURA Yasuo

  National Institute for Fusion Science, Gifu 509-5292, Japan

• NISHIMURA Shin

  National Institute for Fusion Science, Gifu 509-5292, Japan

• TAMURA Naoki

  National Institute for Fusion Science, Gifu 509-5292, Japan

• SAKAKIBARA Satoru

  National Institute for Fusion Science, Gifu 509-5292, Japan

• MOTOJIMA Gen

  National Institute for Fusion Science, Gifu 509-5292, Japan

• NISHINO Nobuhiro

  Graduate School of Engineering, Hiroshima University, Hiroshima 739-8527, Japan

• FUKUDA Takeshi

  Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan

• NAKASHIMA Yousuke

  Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan

• FENG Zhen

  Center for Fusion Science, Southwestern Institute of Physics, Sichuan 610041, China

• YANG Qingwei

  Center for Fusion Science, Southwestern Institute of Physics, Sichuan 610041, China

• FERNÁNDEZ Angela

  Laboratorio Nacional de Fusion, EURATOM-CIEMAT, 28040 Madrid, Spain

• CAPPA Alvaro

  Laboratorio Nacional de Fusion, EURATOM-CIEMAT, 28040 Madrid, Spain

• TRIBALDOS Victor

  Laboratorio Nacional de Fusion, EURATOM-CIEMAT, 28040 Madrid, Spain

• BLACKWELL Boyd D.

  Australian National University, Canberra, Australia

• CHECHKIN Viktor V.

  Institute of Plasma Physics, NSC KIP, 61108 Kharkov, Ukraine

Abstract

This paper reviews the results of an experimental study undertaken in Heliotron J over the past few years to explore the physics design base for a new concept of a helical-axis heliotron. Measurements of electron cyclotron resonance (ECR)/neutral beam injection (NBI)/ion cyclotron range of frequencies (ICRF) heating plasmas have been made for understanding global energy confinement in connection with the international stellarator scaling law (ISS04), spontaneous confinement improvement (L-H transition), confinement improvement based on supersonic molecular beam injection (SMBI), magnetohydrodynamic (MHD) activity, edge plasma characteristics, including rotation of a filamentary turbulence structure, and plasma current control, including the electron cyclotron current drive (ECCD), the energetic-particle driven Alfvén eigenmodes, and related fast ion dynamics. The results are discussed in terms of the rotational transform ι/2π and the bumpiness ε_b (or the effective helical ripple ε_eff). Control of these two parameters was experimentally demonstrated to be the key issue in determining the optimum performance of Heliotron J. The result confirms that the helical-axis heliotron provides a unique and high potential for exploiting an alternative and advanced path to future helical systems.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 5 S2003-S2003, 2010

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• Heliotron J
• helical-axis heliotron
• bumpiness
• stellarator
• confinement improvement
• L-H transition
• H-mode
• ISS04
• MHD
• ECCD
• SMBI
• Alfvén eigenmode
• advanced helical system

Details

• CRID: 1390282680230583552
• NII Article ID: 130000668993
• DOI: 10.1585/pfr.5.s2003
• ISSN: 18806821
• Web Site: http://www.jstage.jst.go.jp/article/pfr/5/0/5_0_S2003/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed