Electron cyclotron resonance heating on TEXTOR

E. Westerhof, J.A. Hoekzema, G.M.D. Hogeweij, R.J.E. Jaspers, F.C. Schüller, C.J. Barth, W.A. Bongers, A.J.H. Donné, P. Dumortier, A.F. Van der Grift, J.C. Van Gorkom, D. Kalupin, H.R. Koslowski, A. Krämer-Flecken, O.G. Kruijt, N.J. Lopes Cardozo, P. Mantica, H.J. Van der Meiden, A. Merkulov, A. MessiaenJ.W. Oosterbeek, T. Oyevaar, A.J. Poelman, R.W. Polman, P.R. Prins, J. Scholten, A.B. Sterk, C.J. Tito, V.S. Udintsev, B. Unterberg, M. Vervier, G. Van Wassenhove

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Abstract

The 110 GHz and the new 140 GHz gyrotron systems for electron cyclotron resonance heating (ECRH) and ECCD on TEXTOR are described and results of ECRH experiments with the 110 GHz system are reported. Central ECRH on Ohmic plasmas shows the presence of an internal electron transport barrier near q = 1. This is confirmed by modulated ECRH experiments. A central barrier is also indicated by ECRH in radiatively improved (RI) mode discharges and up to two barriers are seen with ECRH during the current ramp phase. ECRH control of sawteeth is reported for both Ohmic and RI mode target plasmas.
Original languageEnglish
Pages (from-to)1371 - 1383
Number of pages13
JournalNuclear Fusion
Volume43
Issue number11
DOIs
Publication statusPublished - Nov 2003
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Westerhof, E., Hoekzema, J. A., Hogeweij, G. M. D., Jaspers, R. J. E., Schüller, F. C., Barth, C. J., ... Van Wassenhove, G. (2003). Electron cyclotron resonance heating on TEXTOR. Nuclear Fusion, 43(11), 1371 - 1383. https://doi.org/10.1088/0029-5515/43/11/009