[Table of Contents]

Plasma and Fusion Research

Volume 10, 3405046 (2015)

Regular Articles


ICRF Heating Experiment on LHD in Foreseeing a Future Fusion Device
Tetsuo SEKI, Takashi MUTOH, Kenji SAITO, Hiroshi KASAHARA, Ryosuke SEKI, Shuji KAMIO, Goro NOMURA, Yanping ZHAO1), Sonjong WANG2) and LHD Experiment Group
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
1)
Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui, 230031, P.R. China
2)
Korea Atomic Energy Research Institute, Daejeon 305-600, Korea Rep.
(Received 28 November 2014 / Accepted 26 February 2015 / Published 16 April 2015)

Abstract

Plasma heating experiment using the ion cyclotron range of frequencies (ICRF) heating has been carried out. Aiming at the high power and long pulse heating and application to the future fusion device, the antenna without Faraday shield was tested and newly developed antenna, called FAIT antenna, was used. Steady state experiment was progressed by using the high power ICRF heating with those antennas. Plasma discharge length about 48 minutes was achieved with the heating power of 1.2 MW and a line-averaged electron density of 1.2 × 1019 m−3. The injected heating energy reached 3.36 GJ and it is highest in the fusion plasma experiments. We will promote the high power steady state research involving the evaluation of the antennas and heating performance.


Keywords

ICRF heating, ICRF antenna, Faraday shield, LHD, steady state operation

DOI: 10.1585/pfr.10.3405046


References

  • [1] O. Kaneko et al., Nucl. Fusion 53, 104015 (2013).
  • [2] K. Saito et al., J. Nucl. Mater. 363-365, 1323 (2007).
  • [3] R. Van Nieuwenhove et al., Nucl. Fusion 32, 1913 (1992).
  • [4] J. Sorensen et al., Nucl. Fusion 33, 915 (1993).
  • [5] J.-M. Noterdaeme et al., AIP Conf. Proc. 355, 47 (1995).
  • [6] D.W. Swain et al., Nucl. Fusion 37, 211 (1997).
  • [7] H. Kasahara et al., Plasma Fusion Res. 5, S2090 (2010).
  • [8] K. Saito et al., Fusion Eng. Des. 88, 1025 (2013).
  • [9] M. Greenwald et al., Nucl. Fusion 53, 104004 (2013).



This paper may be cited as follows:

Tetsuo SEKI, Takashi MUTOH, Kenji SAITO, Hiroshi KASAHARA, Ryosuke SEKI, Shuji KAMIO, Goro NOMURA, Yanping ZHAO, Sonjong WANG and LHD Experiment Group, Plasma Fusion Res. 10, 3405046 (2015).