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(FTP/21) Steady State Heating Technology Development for the LHD

   
T. Watari , T. Shimozuma , Y. Takeiri , R. Kumazawa , T. Mutoh , M. Sato , O. Kaneko , K. Ohkubo , S. Kubo , H. Idei , Y. Oka , M. Osakabe , T. Seki , K. Tsumori , Y. Yoshimura , R. Akiyama , T. Kawamoto , S. Kobayashi , F. Shimpo , Y. Takita , E. Asano , S. Itoh , G. Nomura , T. Ido , M. Hamabe , M. Fujiwara , A. Iiyoshi , S. Morimoto ¹, T. Bigelow ², Y. P. Zhao ³, X. D. Li ⁴
 
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, 509-5292 Japan
¹ Kanazawa Institute of Technology, 7-1, Oogigaoka, Nonoichi, Ishikawa, 921, Japan
² Oak Ridge National Laboratory, TN37831, USA.
³ Institute of Plasma Physics, Academia Sinica, 230031, Hefei, Anhui, China
⁴ Southwestern Institute of Physics, Chengdu, 610041, China

Abstract
Construction of the LHD  has been completed and it went into the experimental phase in early April 1998. The first plasma was obtained with ECH with a power level of 300 kW. Three heating schemes, ECH, ICRF, and NBI, are adopted and join the heating experiment in the second experimental campaign. Since the LHD has superconducting coils, one of the missions of plasma heating in the LHD is demonstration of a steady state plasma. Intensive technology development for steady state plasma heating has been carried out at NIFS since 1992. The paper summarizes the achievements of these developmental activities in the past several years. The knowledge obtained may be applicable to ITER , where steady state plasma heating is essential.

   

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