Author/Authors :
Vrancken، نويسنده , , M. and Lerche، نويسنده , , E. and Blackman، نويسنده , , T. and Durodié، نويسنده , , F. and Evrard، نويسنده , , M. and Graham، نويسنده , , M. and Jacquet، نويسنده , , P. H. Kaye، نويسنده , , A. M. Mayoral، نويسنده , , M.-L. and Nightingale، نويسنده , , M.P.S. and Ongena، نويسنده , , J. and Van Eester، نويسنده , , D. and Van Schoor، نويسنده , , M.، نويسنده ,
Abstract :
Ion Cyclotron Radio Frequency (ICRF) antennas operating under high voltage to couple high power to fusion plasmas are at risk of electrical arcing. The standard Voltage Standing Wave Ratio (VSWR) system does not protect low impedance areas, which are used in antennas to achieve load tolerance to variations in plasma loading during Edge Localised Modes (ELMs). The Scattering Matrix Arc Detection System (SMAD) was designed to create additional protection for these areas, and 4 complete systems were implemented and tested on the ITER-like antenna (ILA) on JET. This paper describes the performance under relevant experimental conditions of load tolerance and/or high voltage and electrical arcing causing generator trip events.
Keywords :
Plasma heating , Antenna , ICRF , Arc detection , Voltage standoff
