Electron cyclotron resonance heating on TEXTOR

TitleElectron cyclotron resonance heating on TEXTOR
Publication TypeJournal Article
Year of Publication2003
AuthorsE. Westerhof, J.A Hoekzema, G.MD Hogeweij, R.JE Jaspers, F.C Schüller, C.J Barth, W.A Bongers, A.JH Donne, P. Dumortier, A.F van der Grift, J.C van Gorkom, D. Kalupin, H.R Koslowski, A. Kramer-Flecken, O.G Kruijt, N.JL Cardozo, P. Mantica, H.J van der Meiden, A. Merkulov, A. Messiaen, J.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
JournalNuclear Fusion
Volume43
Issue11
Pagination1371-1383
Date PublishedNov
Type of ArticleArticle
ISBN Number0029-5515
KeywordsCONFINEMENT, DISCHARGES, IMPROVED MODE, INTERNAL TRANSPORT BARRIERS, JET, PLASMAS, RTP, T-10, TCV TOKAMAK
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.

DOI10.1088/0029-5515/43/11/009
Division

FP

Department

CPP-HT

PID

b36045db752c2663f8f705b0f85c0ec9

Alternate TitleNucl. Fusion

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