Design studies of the collector sweeping system for the 2 MW 170 GHz coaxial gyrotron for ITER

Author

Illy, S. ; Danilov, I. ; Raff, S. ; Piosczyk, B.

Author_Institution

Inst. fur Hochleistungsimpuls-und Mikrowellentechnik, Forschungszentrum Karlsruhe, Leopoldshafen, Germany

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

231

Lastpage

232

Abstract

The design of the collector for the 2 MW coaxial gyrotron has been verified taking into account the effect of eddy currents in the collector walls by using the ANSYS finite element code. As a result, it has been found that the eddy currents in the walls significantly influence the sweeping behaviour of the electron beam along the collector surface. An estimation according to the well known skin effect is therefore not sufficient. This modified field distribution results in a strong reduction of the sweeping range and thus in an unacceptable increase of the power loading on the collector wall.

Keywords

copper; eddy currents; electron beams; finite element analysis; gyrotrons; skin effect; 170 GHz; 2 MW; ANSYS finite element code; Cu; ITER; coaxial gyrotron; collector sweeping system; collector walls; copper; eddy currents; electron beam; international thermonuclear experimental reactor; power loading; skin effect; Coaxial components; Coils; Eddy currents; Electron beams; Electron emission; Finite element methods; Gyrotrons; Inductors; Magnetic fields; Skin effect;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on

Print_ISBN

0-7803-8490-3

Type

conf

DOI

10.1109/ICIMW.2004.1422039

Filename

1422039