Design and engineering of the Alcator C-Mod lower hybrid current drive system

Author

Loesser, G.D. ; Rushinski, J. ; Bernabei, S. ; Hosea, J.C. ; Wilson, J.R. ; Beck, B. ; Parker, R.

Author_Institution

PPPL, Princeton Univ., NJ, USA

fYear

2002

fDate

2002

Firstpage

20

Lastpage

22

Abstract

The PSFC group of MIT and PPPL are jointly developing a Lower Hybrid Current Drive (LHCD) system for installation on the Alcator C-Mod tokamak, with the primary goal of driving plasma current. Twelve Klystrons will feed a coupler with an input power of 3 MW at 4.6 GHz and a pulse length of 5 seconds. The coupler is composed of 4 arrays, each with 24 wave-guides (96 total) which are stacked poloidally and are symmetric about both the vertical and horizontal planes. The four-stacked arrays are installed through a single equatorial port and can be axially adjusted to provide optimum plasma coupling. Material selections and spatial limitations required innovative design solutions that will be described.

Keywords

Tokamak devices; fusion reactor design; klystrons; plasma filled waveguides; plasma hybrid waves; plasma toroidal confinement; plasma transport processes; 3 MW; 4.6 GHz; 5 s; Alcator C-Mod lower hybrid current drive system; Alcator C-Mod tokamak; LHCD; design solutions; equatorial port; klystrons; optimum plasma coupling; plasma current; wave-guides; Design engineering; Feeds; Frequency; Klystrons; Physics; Plasma diagnostics; Plasma sources; Plasma stability; Plasma temperature; Plasma waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2002. 19th Symposium on

Print_ISBN

0-7803-7073-2

Type

conf

DOI

10.1109/FUSION.2002.1027632

Filename

1027632