ECRH power injection in TORE SUPRA

Author

Lennholm, M. ; Agarici, G. ; Barbuti, A. ; Berger-By, G. ; Bouquey, F. ; Clary, J. ; Darbos, C. ; Dumont, R. ; Giruzzi, G. ; Jung, M. ; Magne, R. ; Roux, D. ; Segui, J.-L. ; Zou, X.

Author_Institution

Assoc. EURATOM, CEA, France

fYear

2002

fDate

2002

Firstpage

329

Lastpage

332

Abstract

The ECRH experiment on TORE SUPRA is designed to inject up to 3 MW of power at 118 GHz, using an antenna consisting of six fixed spherical mirrors and three mobile steering minors. The position of the mobile mirrors can be varied in real time using two stepper motors for each mobile mirror. In addition to controlling the injection angle, the position of the mobile mirrors also affects the polarisation of the injected wave. Accurate formulae to computer in real time, the stepper motor positions required to obtain the desired beam injection angles have been derived. Formulae to determine the effect on the wave polarisation, of the actual mobile mirror positions have also been determined. These formulae have been verified by precise laser measurements and by comparison of power deposition calculations and experimental results. Experiments with different values of polarisation and injection angles have been carried out in the 2001 campaign.

Keywords

antennas in plasma; fusion reactor design; plasma radiofrequency heating; plasma toroidal confinement; 118 GHz; 3 MW; ECRH; TORE SUPRA; beam injection angles; injection angles; polarisation; power deposition; power injection; spherical mirrors; steering minors; Bellows; Gyrotrons; Mirrors; Mobile antennas; Optical waveguides; Polarization; Power transmission lines; Random access memory; Steel; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2002. 19th Symposium on

Print_ISBN

0-7803-7073-2

Type

conf

DOI

10.1109/FUSION.2002.1027704

Filename

1027704