Shape reconstruction of RF-driven divertor plasma on QUEST

Kazuo Nakamura, H. Fujita, X. L. Liu, E. B. Xue, Fan Xia, Osamu Mitarai, Kenichi Kurihara, Y. Kawamata, M. Sueoka, Makoto Hasegawa, Kazutoshi Tokunaga, H. Zushi, K. Hanada, A. Fujisawa, K. Matsuoka, H. Idei, Y. Nagashima, S. Kawasaki, H. Nakashima, A. HigashijimaKuniaki Araki, A. Fukuyama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In the present RF-driven plasma with a lot of high-energy electrons, there may be anisotropic plasma pressure, which makes the usual equilibrium analysis difficult, but the Cauchy condition surface method can reconstruct the plasma shape precisely regardless of the anisotropy. In addition, the plasma current effect in the open magnetic surfaces outside of the closed magnetic surfaces is considered in the RF-driven divertor plasma. In the reconstruction process, singular value (SV) decomposition is used and optimal criterion function for generalized cross validation is estimated concerning truncation or reduction of the small-SV components.

Original languageEnglish
Article number6871382
Pages (from-to)2309-2312
Number of pages4
JournalIEEE Transactions on Plasma Science
Issue number9
Publication statusPublished - Sept 1 2014

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics


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