Transport of the plasma with neoclassical internal transport barrier on CHS

T. Minami, A. Fujisawa, H. Iguchi, S. Murakami, M. Yokoyama, Y. Yoshimura, M. Isobe, S. Nishimura, C. Suzuki, I. Nomura, K. Ida, K. Matsuoka, S. Okamura, C. Takahashi

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


The plasma with neoclassical internal transport barrier (N-ITB) has been observed for electron cyclotron heated (ECH) plasma in the Compact Helical System Heliotron/Torsatron. The N-ITB is characterized by the peaked electron temperature, with a large temperature gradient (0.43 keV cm-1) and a large electric field shear at the barrier location. The transport analysis shows that the electron thermal conductivity in plasma with N-ITB is lower than that without N-ITB at the transport barrier. The neoclassical transport is calculated from the analytical model for the neoclassical particle flux. In the ECH plasma with N-ITB, the electron thermal conductivity χe is at the level of the neoclassical χe at the barrier transport which demonstrates that the anomalous transport is reduced to a level well below the neoclassical transport.

Original languageEnglish
Pages (from-to)A197-A201
JournalPlasma Physics and Controlled Fusion
Issue number5 A
Publication statusPublished - May 2002
Externally publishedYes
Event8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers - Toki, Japan
Duration: Sept 5 2001Sept 7 2001

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics


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