Oscillation Characteristics of CW 300 GHz Gyrotron FU CWI

Author

Saito, T. ; Idehara, T. ; Mitsudo, S. ; Ogawa, I. ; Hoshizuki, H. ; Murase, H. ; Sakai, K. ; Zapevalov, V.E. ; Malygin, O.V. ; Khizhnjak, V.I. ; Karpov, V.P. ; Tai, E.M.

Author_Institution

Fukui Univ., Fukui

fYear

2006

fDate

18-22 Sept. 2006

Firstpage

24

Lastpage

24

Abstract

A CW 300 GHz gyrotron has been developed and installed in University of Fukui. A quasi-Gaussian beam is delivered through the vacuum window after mode conversion from the TE22.8 cavity mode with a complex of an internal radiator and beam shaping mirrors. Performance test has been carried out and the maximum CW output power of 1.75 kW has been attained at the beam voltage of 15 kV and the beam current of 1A. The maximum efficiency of 15.5% is obtained at the cathode voltage slightly lower than 15 kV.

Keywords

Gaussian processes; gyrotrons; oscillations; submillimetre wave tubes; TE22.8 cavity mode; beam shaping mirrors; efficiency 15.5 percent; frequency 300 GHz; gyrotron FU CWI; internal radiator; mode conversion; oscillation characteristics; power 1.75 kW; quasi-Gaussian beam; vacuum window; voltage 15 kV; Cathodes; Frequency; Gyrotrons; Materials processing; Mirrors; Physics; Power generation; Shape measurement; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0400-2

Electronic_ISBN

1-4244-0400-2

Type

conf

DOI

10.1109/ICIMW.2006.368233

Filename

4221967