Determination of electron beam radius at the cavity in gyrotron FU CW I

Author

Tatematsu, Yoshinori ; Saito, Teruo ; Nakano, Tomoaki ; Hashimoto, Shuichi ; Mitsudo, Seitaro ; Idehara, Toshitaka ; Zapevalov, Vladimir E. ; Glyavin, Mikhail

Author_Institution

Res. Center for Dev. of Far-Infrared Region, Univ. of Fukui, Fukui, Japan

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

A 300 GHz fully continuous wave gyrotron FU CW I has been developed for application to material processing in the submillimeter wave range. The output power from this gyrotron has not reached the designed one. As a reason of power shortage, it is considered that the electron beam radius shifts from the optimum radius due to installation of additional gun coils to suppress a large anode current. For improvement of the output power, the present beam radius is determined from measurement. With the determined radius, the cause of power shortage is discussed.

Keywords

gyrotrons; laser materials processing; submillimetre wave devices; electron beam radius shifts; frequency 300 GHz; fully continuous wave gyrotron FU CW I; material processing; power shortage; submillimeter wave range; Anodes; Coils; Electron beams; Extraterrestrial measurements; Gyrotrons; Magnetic field measurement; Materials processing; Power generation; Power measurement; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5324750

Filename

5324750