高次谐波开槽回旋行波放大管自洽非线性数值模拟
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摘要: :在未考虑电子注速度零散、引导中心零散以及波导壁损耗的情况下,采用四阶龙格库塔法,对均匀截面开槽高次回旋行波放大管注波互作用进行了数值计算,得出一些重要的互作用规律。电子注绕轴作大回旋运动。在π模式、四次谐波、35.05GHz、58kV、8A、v⊥/v∥=1.5的情况下,饱和效率达到24.4%,增益为34dB,峰值功率为113.2kW,饱和带宽为4%。Abstract: The behavior of the slottedgyrotron travellingwave amplifier(gyroTWT)with a uniform section is simulated by aRungeKutta algorithm code under thecondition neglecting the velocity spreadand guiding center spread of the electronbeam and the loss of the wave guide. Someimportant interaction laws are abtained.The electron beam encircles the axis of the waveguide. For an ideal 58kV、8A beamwith v⊥/v∥=
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Key words:
- gyrotwt /
- slotted waveguide /
- constant driving bandwidth /
- saturated bandwidth /
- high harmonic
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