ICRF heating analysis on ASDEX plasmas

Sanae I. Ito, Kimitaka Itoh, Atsushi Fukuyama, Takayuki Morishita, Karl Steinmetz, Jean M. Noterdaeme

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

ICRF (ion cyclotron range of frequencies) waves heating in an ASDEX tokamak are analyzed. The excitation, propagation and absorption are studied by using a global wave code. This analysis is combined with a Fokker-Planck code. The waveform in the plasma, the loading resistance and the reactance of the antenna are calculated for both the minority ion heating and the second harmonlc resonance heating. Attention is given to the change of the antenna loading associated with the L/H transition. Optimum conditions for the loading are discussed. In the minority heating case, the tail generation and thermalization are analyzed. Spatial profiles of the tail-ion temperature and the power transferred to the bulk electrons and ions are obtained. Central as well as off-central heating cases are investigated. The effect of the reactive electric field is discussed in connection with rf losses and impurity production.

Original languageEnglish
Pages (from-to)1947-1959
Number of pages13
JournalJapanese journal of applied physics
Volume27
Issue number10 R
DOIs
Publication statusPublished - Oct 1988

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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