Title :
Experimental Study of a Ku-Band Gyrotron Backward-Wave Oscillator With a Single Stage Depressed Collector
Author :
Liu, Ben-Tian ; Jiao, Chong-Qing ; Zhang, Yan-Sheng ; Yuan, Guang-Jiang ; Guo, Wei ; Zheng, Lei
Author_Institution :
Beijing Vacuum Electron. Res. Inst., Beijing
Abstract :
The experiment on a Ku-band gyrotron backward- wave oscillator (gyro-BWO) with a single depressed collector and linear polarization mode output has been performed successfully. Stable magnetic tuning bandwidth of 5% and maximum power of 48 kW under a 40-kV 11.5-A electron beam were achieved. The overall efficiency of the gyro-BWO with a single stage depressed collector has been enhanced from 10.5% to 21%. The measured performance has demonstrated a strong potential of the gyro-BWO for new application requiring high-power tunable wave source.
Keywords :
backward wave oscillators; gyrotrons; millimetre wave oscillators; Ku-band gyrotron; backward-wave oscillator; current 11.5 A; electron beam; high-power tunable wave source; linear polarization mode; power 48 kW; single stage depressed collector; stable magnetic tuning bandwidth; voltage 40 kV; Bandwidth; Cutoff frequency; Cyclotrons; Electromagnetic waveguides; Electron beams; Gyrotrons; Microwave oscillators; Millimeter wave measurements; Tuning; Voltage; Broadband tunability; depressed collector; gyrotron backward-wave oscillator (gyro-BWO); high-power millimeter wave;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2007.902123
