1. Local island divertor experiments on LHD
- Author
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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. Kawahata, S. 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, and O. Motojima
- Subjects
Nuclear and High Energy Physics ,genetic structures ,Chemistry ,Divertor ,Plasma confinement ,Mechanics ,Fusion power ,Edge (geometry) ,eye diseases ,law.invention ,body regions ,Core (optical fiber) ,Nuclear Energy and Engineering ,Nuclear reactor core ,law ,Head (vessel) ,General Materials Science ,sense organs ,Atomic physics ,Stellarator - 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.
- Published
- 2005
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