摘要
分析了相对论扩展互作用腔振荡器(Relativistic Extended Interaction Cavity Oscillator)初次实验中存在的模式竞争和重复频率运行不稳定等问题.通过改进扩展互作用腔振荡器的长度,抑制了模式竞争问题;优化设计和选择了三轴提取腔和收集极结构与材料,解决了重复脉冲REICO的高功率稳定运行问题,减轻了脉冲缩短问题,稳定运行重频从15Hz提高到100Hz,辐射微波脉宽由20ns增加到38ns.采用900kV/16kA/45ns的电子束驱动REICO,实现了峰值功率4.1GW、频率2.85GHz、脉宽38ns、重频100Hz的辐射微波稳定输出,功率效率26%,能量效率22%,辐射微波平均功率16kW.
The mode competition and amplitude instability of Relativistic Extended Interaction Cavity Oscillator encountered with in the initial experiment were investigated in this paper. The modulation mode-competition was overcome by adjusting the mod- ulation cavity gap width. The pulse repetition rates increasing from 15Hz to 100Hz and the output microwave pulse width increasing from 20ns to 38ns were improved after optimizing the structures of the electron beams collection and the triaxial output cavity. Using a 900kV, 16kA,45ns electron beam, 4.1GW radiated power was extracted in 38ns FWHM pulses at 2.85GHz and 100pps. The power efficiency is 26%, and the energy efficiency is 22%. The radiated average power is 16kW.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2009年第8期1690-1693,共4页
Acta Electronica Sinica
关键词
扩展互作用腔
振荡器
三轴输出腔
高功率微波
重复频率运行
extended interaction cavity
oscillator
triaxial output cavity
high power microwave
repetitively operation
