Title :
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
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;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2011.2150227
