Electron cyclotron resonance heating on TEXTOR**This paper is an expanded version of the two papers presented on the TEXTOR ECRH system (J.A. Hoekzema et al) and experimental results (E. Westerhof et al) at the 12th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (Aix-en-Provence, France, 13–16 May 2002).

E Westerhof ,J C Van Gorkom ,P Dumortier ,J Scholten ,G Van G Van Wassenhove,F C Schüller ,D Kalupin ,R.w Polman ,P.r Prins ,H R Koslowski ,A.F Van Der A.F Van Der Grift,P Mantica ,B Unterberg ,A Krämer‐Flecken ,R Jaspers ,A J H Donné ,H.J Van Der H.J Van Der Meiden,C.j Tito ,Clemens Barth ,W.a Bongers ,A.b Sterk ,J.a Hoekzema ,N.J Lopes N.J Lopes Cardozo,J.w Oosterbeek ,A Messiaen ,G M D Hogeweij ,A.j Poelman ,T Oyevaar ,V S Udintsev ,M Vervier ,A Merkulov ,O.g Kruijt ,Tec Tec Team

doi:10.1088/0029-5515/43/11/009

Electron cyclotron resonance heating on TEXTOR**This paper is an expanded version of the two papers presented on the TEXTOR ECRH system (J.A. Hoekzema et al) and experimental results (E. Westerhof et al) at the 12th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (Aix-en-Provence, France, 13–16 May 2002).

E Westerhof , J C Van Gorkom + Show 31 more

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https://doi.org/10.1088/0029-5515/43/11/009

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Journal: Nuclear Fusion	Publication Date: Nov 1, 2003
Citations: 35	License type: other-oa

Affiliation: Institute for Atomic and Molecular Physics, Laboratoire de Physique des Plasmas, Forschungszentrum Jülich

#Electron Cyclotron Resonance Heating #Electron Cyclotron Resonance Heating Experiments + Show 8 more

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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.

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