A high-efficiency overmoded klystron-like relativistic backward wave oscillator with low guiding magnetic field

作者：Xiao Renzhen^*; Tan Weibing; Li Xiaoze; Song Zhimin; Sun Jun; Chen Changhua

来源：Physics of Plasmas, 2012, 19(9): 093102.

DOI：10.1063/1.4751252

A klystron-like relativistic backward wave oscillator with a ratio of transverse dimension to free-space wavelength being about four is presented. In the beam-wave interaction region, the electron beam interacts with surface wave and volume wave simultaneously. The cathode holder plays an important role in the reflection of backward waves. A guard electrode, an electron collector ring, and a reflection ring are used to optimize the beam-wave interaction. The particle in cell simulation results reveal that microwaves with a power of 2GW and a frequency of 12.3 GHz are generated with an efficiency of 42% when the diode voltage is 400 kV, the beam current 12 kA, and the magnetic field 0.48 T.

• 出版日期2012-9
• 单位西北核技术研究所