W波段具有开放式圆柱光栅的三反射球镜准光腔辐射源
W-band three-mirror quasi-optical cavity radiation source with open column slow-wave grating
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摘要: 为设计输出高功率、高频率的W波段辐射源提供一个可行的方案,对一种具有开放式圆柱光栅的三反射球面镜准光腔大功率辐射源,在理论计算和PIC模拟仿真的基础上,完成了理论设计，装配出实验系统，并进行了热测实验。实验中采用了束流脉宽为70 ns的环形电子注，引导磁场为2.2 T，二极管电压为557 kV，电流约为1.8 kA，实验测得在W波段有1.2 MW的峰值功率输出。Abstract: The paper presents a three-mirror quasi-optical cavity (TMQOC) high power radiation source, which includes a column slow-wave grating and two spherical mirror reflectors. A TMQOC system has been designed on the basis of simulation and theory calculation. With a ring beam passing over the column grating surface, the TMQOC radiation source can output a power of 1.2 MW at W-band, under the condition of guiding magnetic field of 2.2 T, diode voltage of 557 kV, beam current of 1.8 kA with duration of 70 ns.
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Key words:
- high power microwave /
- quasi-optical cavity /
- column grating /
- pic simulation /
- w-band
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