Study of Long-Pulse Plasma Experiment Using ICRF Heating in LHD

T. Seki; T. Mutoh; R. Kumazawa; K. Saito; Y. Nakamura; M. Sakamoto; T. Watanabe; S. Kubo; T. Shimozuma; Y. Yoshimura; H. Igami; K. Ohkubo; Y. Takeiri; Y. Oka; K. Tsumori; M. Osakabe; K. Ikeda; K. Nagaoka; O. Kaneko; J. Miyazawa; S. Morita; K. Narihara; M. Shoji; S. Masuzaki; M. Goto; T. Morisaki; B. J. Peterson; K. Sato; T. Tokuzawa; N. Ashikawa; K. Nishimura; H. Funaba; H. Chikaraishi; N. Takeuchi; T. Notake; H. Ogawa; Y. Torii; F. Shimpo; G. Nomura; M. Yokota; C. Takahashi; A. Kato; Y. Takase; H. Kasahara; M. Ichimura; H. Higaki; Y. P. Zhao; J. G. Kwak; H. Yamada; K. Kawahata; N. Ohyabu; K. Ida; Y. Nagayama; N. Noda; T. Watari; A. Komori; S. Sudo; O. Motojima; LHD Experimental Group

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Study of Long-Pulse Plasma Experiment Using ICRF Heating in LHD

T. Seki, T. Mutoh, R. Kumazawa, K. Saito, Y. Nakamura, M. Sakamoto, T. Watanabe, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Igami, K. Ohkubo, Y. Takeiri, Y. Oka, K. Tsumori, M. Osakabe, K. Ikeda, K. Nagaoka, O. Kaneko, J. Miyazawa, S. Morita, K. Narihara, M. Shoji, S. Masuzaki, M. Goto, T. Morisaki, B. J. Peterson, K. Sato, T. Tokuzawa, N. Ashikawa, K. Nishimura, H. Funaba, H. Chikaraishi, N. Takeuchi, T. Notake, H. Ogawa, Y. Torii, F. Shimpo, G. Nomura, M. Yokota, C. Takahashi, A. Kato, Y. Takase, H. Kasahara, M. Ichimura, H. Higaki, Y. P. Zhao, J. G. Kwak, H. Yamada, K. Kawahata, N. Ohyabu, K. Ida, Y. Nagayama, N. Noda, T. Watari, A. Komori, S. Sudo, O. Motojima, LHD Experimental Group

Fusion Science and Technology / Volume 50 / Number 2 / August 2006 / Pages 186-191

Technical Paper / Stellarators

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The long-pulse plasma discharge experiment is an important experiment in the Large Helical Device, which has a superconducting coil system and the capability of steady-state operation. The experiment of long-pulse plasma discharge was carried out using mainly ion cyclotron range of frequencies heating. The maximum plasma duration is 31 min and 45 s, and the total injected heating energy reached 1.3 GJ. Swing of the magnetic axis is adopted as an effective method to scatter the local heat load on the divertor plate during the discharge. The plasma was terminated abruptly by the influx of metallic impurities accompanied by a spark in the vacuum vessel.

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Study of Long-Pulse Plasma Experiment Using ICRF Heating in LHD