Thermal Analysis of a Strapped Magnetron

Author

Sattorov, Matlabjon Abdurakhimovich ; Bera, Anirban ; Sharma, Ashok ; Kang, Won-Jong ; Kwon, Oh-joon ; Jung, Sun-Shin ; Kim, Dae-Ho ; Lee, Ki Wook ; Won, Jong-hyo ; Kook, Chan Ho ; Park, Gun-Sik

Author_Institution

Dept. of Phys. & Astron., Seoul Nat. Univ., Seoul, South Korea

Volume

58

Issue

8

fYear

2011

Firstpage

2784

Lastpage

2788

Abstract

Thermal analysis of an L-band 60-kW (continuous-wave) double-ring strapped magnetron for optimizing the design of a cathode support structure and cooling system is presented. This magnetron consists of an oxygen-free copper anode with ten built-in cooling channels and a directly heated tungsten cathode. The operating temperature of the cathode is greater than 2000°C; therefore, proper thermal design of the cathode support structure is essential for reliable operation. The heat convection coefficient for the forced air is estimated by simulations comparing the simulated temperatures for different heat convection coefficients with the measured one. It is observed that the comparison between simulations with measurement is in good agreement for various temperatures from 1000°C to 2000°C when the estimated heat convection coefficient of the forced air is used.

Keywords

anodes; cathodes; convection; cooling; copper; magnetrons; thermal analysis; tungsten; L-band double-ring strapped magnetron; built-in cooling channel; cathode support structure design; directly heated tungsten cathode; frequency 1 GHz to 2 GHz; heat convection coefficient; oxygen-free copper anode; power 60 kW; thermal analysis; Cathodes; Cooling; Electromagnetic heating; Physics; Temperature measurement; Thermal analysis; Air cooling; contact conductance; heat convection coefficient; magnetron; thermal analysis;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2011.2150227

Filename

5876310