High power (22 MW) ICRH at JET and developments for next step devices

Author

Wade, T.J. ; Jacquinot, J. ; Bosia, G. ; Sibley, A. ; Schmid, M.

Author_Institution

JET Joint Undertaking, Abingdon, UK

fYear

1991

fDate

30 Sep-3 Oct 1991

Firstpage

902

Abstract

In excess of 22 MW of ion cyclotron resonance heating at the JET (Joint European Torus) plasma center has been achieved with increased plant availability by changes to the plant and its control and protection philosophy. Nested feedback systems, including RF control of the plasma position, enable power to be sustained throughout L mode to H mode fast plasma load variations. Modified plasma sawtooth behavior has been obtained by π/2 phasing of the antenna currents. These control developments and the proposed fast wave current drive experiments with the new four-strap, JET ICRH antennas will be relevant to ITER (International Thermonuclear Experimental Reactor) and next step devices

Keywords

antennas in plasma; fusion reactor ignition; fusion reactor theory and design; plasma instability; plasma radiofrequency heating; plasma toroidal confinement; H mode fast plasma load variations; ICRH; International Thermonuclear Experimental Reactor; JET; Joint European Torus; L mode; MW; RF control; antennas; feedback systems; four-strap; ion cyclotron resonance heating; next step devices; plant availability; plasma center; plasma position; plasma sawtooth behavior; protection philosophy; Control systems; Cyclotrons; Feedback; Heating; Plasma devices; Plasma waves; Power system protection; Radio frequency; Resonance; Temperature control;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1991. Proceedings., 14th IEEE/NPSS Symposium on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0132-3

Type

conf

DOI

10.1109/FUSION.1991.218703

Filename

218703