Local island divertor experiments on LHD

T. Morisaki, S. Masuzaki, A. Komori, N. Ohyabu, M. Kobayashi, Y. Feng, F. Sardei, K. Narihara, K. Tanaka, K. Ida, B. J. Peterson, M. Yoshinuma, N. Ashikawa, M. Emoto, H. Funaba, M. Goto, K. Ikeda, S. Inagaki, O. Kaneko, K. KawahataS. Kubo, J. Miyazawa, S. Morita, K. Nagaoka, Y. Nagayama, H. Nakanishi, K. Ohkubo, Y. Oka, M. Osakabe, T. Shimozuma, M. Shoji, Y. Takeiri, S. Sakakibara, R. Sakamoto, K. Sato, K. Toi, K. Tsumori, K. Y. Watababe, H. Yamada, I. Yamada, Y. Yoshimura, O. Motojima

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47 Citations (Scopus)

Abstract

A local island divertor (LID) experiment has begun on LHD, with the aims of controlling edge recycling and improving the plasma confinement. The fundamental divertor functions of the LID have been demonstrated in the recent experiments. From the particle flux profile measurements on the LID head it was found that the particles diffusing out from the core region are well guided along the island separatrix to the LID head. Owing to the closed configuration around the LID head, evidence of the high efficient pumping was observed, together with a strong capacity to screen impurities. The first results of edge modeling using the EMC3-EIRENE code are also presented.

Original languageEnglish
Pages (from-to)154-160
Number of pages7
JournalJournal of Nuclear Materials
Volume337-339
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Mar 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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    Morisaki, T., Masuzaki, S., Komori, A., Ohyabu, N., Kobayashi, M., Feng, Y., Sardei, F., Narihara, K., Tanaka, K., Ida, K., Peterson, B. J., Yoshinuma, M., Ashikawa, N., Emoto, M., Funaba, H., Goto, M., Ikeda, K., Inagaki, S., Kaneko, O., ... Motojima, O. (2005). Local island divertor experiments on LHD. Journal of Nuclear Materials, 337-339(1-3 SPEC. ISS.), 154-160. https://doi.org/10.1016/j.jnucmat.2004.10.165