Development of a material heating system by using a 300 GHz gyrotron FU CW I

Author

Sako, K. ; Kobayashi, Y. ; Hashimoto, S. ; Nakano, T. ; Mitsudo, S. ; Tatematsu, Y. ; Idehara, T. ; Saito, T.

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

The effective characteristics of high frequency and strong electric field processing were observed. One of the interesting effects is so called non-thermal effect or microwave effect. In order to widely study the non-thermal effect of ceramics sintering and application of material heating, we developed a material processing system by using a 300 GHz gyrotron. This system are consisted of a 300 GHz, 3.5 kW, CW gyrotron with a cryogen free 12 T superconducting magnet, a corrugated circular waveguide and an applicator. In submillimeter wave region, the distribution of electromagnetic wave shows inhomogeneity inside a simple applicator. In order to improve distribution, polygonal reflector was developed and installed into an applicator. By using a polygonal reflector, homogeneity of electromagnetic wave inside applicator is improved three times.

Keywords

circular waveguides; gyrotrons; microwave heating; sintering; superconducting magnets; ceramics sintering; circular waveguide; electric field processing; electromagnetic wave; frequency 300 GHz; gyrotron FU CW I; material heating system; material processing system; microwave effect; nonthermal effect; polygonal reflector; power 3.5 kW; superconducting magnet; Applicators; Ceramics; Electromagnetic heating; Electromagnetic scattering; Frequency; Gyrotrons; Magnetic materials; Materials processing; Resistance heating; Superconducting materials;

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.2009.5325548

Filename

5325548