ENHANCEMENT OF EFFICIENCY FOR LOWER HYBRID CURRENT DRIVE BY ELECTRON CYCLOTRON HEATING IN THE WT-2 TOKAMAK.

A. Ando, K. Ogura, G. Tanaka, M. Iida, S. Ide, M. Nakamura, T. Maekawa, Y. Terumichi, S. Tanaka

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Injection of electron cyclotron (EC) waves into the lower hybrid (LH) current-sustained plasma in WT-2 increases the efficiency and the ramp-up rate of the LH-driven current when the high-energy electrons that couple to the LH waves are EC-heated. On the contrary, the efficiency decreases and the current ramp-up rate becomes negative when the bulk electrons are EC-heated. This selective EC-heating of bulk electrons or high-energy electrons is achieved by changing the radial position of the EC resonance layer in the plasma column.

Original languageEnglish
Pages (from-to)107-111
Number of pages5
JournalNuclear Fusion
Volume26
Issue number1
DOIs
Publication statusPublished - 1986 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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