Electron cyclotron resonance heating on TEXTOR*

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Published 3 November 2003 2003 IAEA, Vienna
, , Citation E. Westerhof et al 2003 Nucl. Fusion 43 1371 DOI 10.1088/0029-5515/43/11/009

0029-5515/43/11/1371

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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Footnotes

  • et alet al12th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (Aix-en-Provence, France, 13–16 May 2002)

10.1088/0029-5515/43/11/009