强激光与粒子束2024，Vol.36Issue(3)：59-64,6.DOI:10.11884/HPLPB202436.230319
带双腔反射器的X波段低磁场过模相对论返波管振荡器
Low magnetic field X-band over-mode relativistic backward wave oscillator with dual-cavity reflector
摘要
Abstract
This paper propose an X-band over-mode high-efficiency relativistic backward wave oscillator(RBWO),whose main structure includes a dual resonant cavity reflector,a periodic slow wave structure and an inserted coaxial mode selector.The RBWO uses an over-mode structure and transmits a pure TM01 mode in the output waveguide.The dual-cavity reflector enables the slow-wave structure to achieve good isolation from the diode region under over-mode conditions,and at the same time provides sufficient pre-modulation for the electron beam to achieve high microwave conversion efficiency under low magnetic field.The addition of the coaxial inner conductor allows the device to work in TM02 mode,while eliminating other unnecessary mode competition,achieving higher power capacity.In the PIC simulation,under the conditions of a guiding magnetic field of 0.63 T,a diode voltage of 850 kV,and a beam current of 11.74 kA,a microwave output power of 3.5 GW was obtained,and the device efficiency was about 35%.关键词
高功率微波/相对论返波管振荡器/过模/谐振腔反射器/模式选择Key words
high power microwave/relativistic backward wave oscillator/over-mode/resonant cavity reflector/mode selection分类
信息技术与安全科学引用本文复制引用
左靖凡,李士锋,吴洋,黄华,孙利民,宋法伦..带双腔反射器的X波段低磁场过模相对论返波管振荡器[J].强激光与粒子束,2024,36(3):59-64,6.基金项目
高功率微波重点实验室基金项目(JCKYS2021212013) （JCKYS2021212013）
