Configuration effect on energy confinement and local transport in LHD and contribution to the international stellarator database

H. Yamada, K. Ida, S. Murakami, K. Y. Watanabe, E. Ascasibar, R. Brakel, A. Dinklage, J. H. Harris, S. Okamura, F. Sano, U. Stroth, S. Inagaki, K. Tanaka, M. Goto, K. Nishimura, K. Narihara, S. Morita, S. Sakakibara, B. J. Peterson, R. SakamotoJ. Miyazawa, T. Morisaki, M. Osakabe, K. Toi, N. Tamura, K. Ikeda, K. Yamazaki, K. Kawahata, O. Kaneko, N. Ohyabu, A. Komori, O. Motojima

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

New stellarator experiments have been launched since the last compilation of the international stellarator database in 1995. Parameter regimes have been extended by Large Helical Device (LHD), and a variety of improved modes have been found since then. The revision of the international stellarator database has been initiated, driven by these emerging interests and by the requirements for a reactor assessment. Some provisional issues are discussed. An understanding of configurational ef fects is a prerequisite to the derivation of a unified scaling. Differences in magnetic geometry are influential in characterizing energy confinement. The results from the magnetic axis and elongation scans in LHD are high-lighted. Comparison with tokamak confinement is also addressed. The revision of the database is in progress, and this paper is an interim report.

Original languageEnglish
Pages (from-to)82-90
Number of pages9
JournalFusion Science and Technology
Volume46
Issue number1
DOIs
Publication statusPublished - Jul 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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