Progress towards optimization of phase-correcting mirrors for a multi-frequency gyrotron

Author

Yang, X. ; Arnold, A. ; Dammertz, G. ; Heidinger, R. ; Koppenburg, K. ; Piosczyk, B. ; Prinz, O. ; Wagner, D. ; Thumm, M.

Author_Institution

Forschungszentrum Karlsruhe, Assoc. EURATOM-FZK, Karlsruhe, Germany

Volume

2

fYear

2005

fDate

19-23 Sept. 2005

Firstpage

618

Abstract

The newly designed CVD-diamond Brewster window of the FZK multi-frequency gyrotron requires the existing mirror system to be modified to optimize the transmission through the window aperture. Intensive calculations have been done for this purpose; nine operating modes between 105 GHz (TE_17.6) and 143 GHz (TE_23.8) have a nearly fundamental Gaussian distribution at the window. Simulation results show this QO mode converter can be used for the broadband operation of a multi-frequency 1 MW gyrotron.

Keywords

gyrotrons; mirrors; optical design techniques; optical windows; 1 MW; 105 to 143 GHz; CVD diamond Brewster window; FZK multifrequency gyrotron; Gaussian distribution; QO mode converter; broadband operation; phase-correcting mirror optimization; window aperture; Apertures; Design optimization; Gaussian distribution; Gyrotrons; Magnetic fields; Mirrors; Plasmas; Radio frequency; Structural beams; Windows;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on

Print_ISBN

0-7803-9348-1

Type

conf

DOI

10.1109/ICIMW.2005.1572693

Filename

1572693