Mechanical design of the ICRH antenna for JET-EP

Author

Walton, R. ; Agarici, G. ; Amarante, G. ; Baity, W. ; Beaumont, B. ; Brémond, S. ; Durodié, F. ; Fanthome, J. ; Goulding, R. ; Heikkinen, Juuso ; Kaye, A. ; Koch, R. ; Lamalle, P. ; Mazzone, G. ; Noterdaeme, J.M. ; Riccardo, V. ; Roccella, M. ; Sborchia,

Author_Institution

Euratom/UKAEA Fusion Assoc., Abingdon, UK

fYear

2002

fDate

2002

Firstpage

103

Lastpage

106

Abstract

The JET-EP antenna is designed to verify the design principles of that proposed for ITER, in relevant plasma conditions. It is intended to launch 7.2 MW of RF power to the plasma of the JET machine during its ´Enhanced Performance´ program, at a power density of around 8 MW/m². The antenna comprises two poloidal current straps, each subdivided into four electrically short straps complete with in-vessel capacitors. The antenna is supported via a cantilever support box to the external support structure. This plug-in, through-port type assembly is clamped to the vacuum vessel externally. The antenna itself is fitted remotely. External rails and bellows allow radial positioning of the assembly. Eight capacitors are situated just behind the short antenna current straps. Plug-in replacement of the capacitors is performed through the vacuum vessel port.

Keywords

antennas in plasma; fusion reactor design; fusion reactor ignition; plasma radiofrequency heating; plasma toroidal confinement; 7.2 MW; ICRH antenna; JET-EP; RF power; cantilever support box; electrically short straps; fusion reactors; mechanical design; plasma conditions; poloidal current straps; radial positioning; through-port type assembly; Assembly; Capacitors; Fasteners; Gold; Loaded antennas; Plasma density; Radio frequency; Rails; Testing; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2002. 19th Symposium on

Print_ISBN

0-7803-7073-2

Type

conf

DOI

10.1109/FUSION.2002.1027653

Filename

1027653