Development of Face-Cooled Tunable Double-Disk Sapphire Window for 42-GHz 200-kW Gyrotron

Author

Nayek, Narugopal ; Naik, Arvind ; Das, Subrata

Author_Institution

Gyrotron & Syst. Div., SAMEER, Mumbai, India

Volume

43

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

1024

Lastpage

1028

Abstract

Window happens to be the most critical and vulnerable component in high-power gyrotrons. A face-cooled tunable double-disk sapphire window has been developed primarily for a 42-GHz 200-kW gyrotron. The critical issues like: sapphire-to-metal joining, electrical simulation, thermal analysis, structural analysis of the window, and its low-power characterizations in TE03 mode have been discussed. The return loss and insertion loss have been measured to be -29 and -0.12 dB, respectively. The window has been attached to the first Indian gyrotron and vacuum processed successfully.

Keywords

gyrotrons; sapphire; Indian gyrotron; electrical simulation; face-cooled tunable double-disk sapphire window; frequency 42 GHz; high-power gyrotrons; loss -0.12 dB; loss -29 dB; low-power characterizations; power 200 kW; sapphire-to-metal joining; structural analysis; thermal analysis; Coolants; Dielectrics; Gyrotrons; Heating; Joints; Metals; Thermal analysis; Characterization; TE₀³ mode launcher; TE03 mode launcher; gyrotron; sapphire-to-metal joining; simulations; tunable dielectric window; tunable dielectric window.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2015.2403391

Filename

7079510