Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun
Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun
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DOI：
10.1063/1.2749425
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发表时间：
2007-06
影响因子：
4
通讯作者：
A. Cross;Wenlong He;A. Phelps;K. Ronald;C. Whyte;A. Young;C. Robertson;E. G. Rafferty;J. Thomso
中科院分区：
文献类型：
--
作者：
A. Cross;Wenlong He;A. Phelps;K. Ronald;C. Whyte;A. Young;C. Robertson;E. G. Rafferty;J. Thomso
本文介绍了一种螺旋波纹波导回旋行波管放大器的实验工作。回旋电子束的二次谐波回旋模与辐射的耦合发生在一个宽频带内的近无限相速度区。在螺距因子为1.2、能量为185 keV、电流为6.0A的环轴电子束条件下，该放大器的输出功率为220 kW，饱和增益为24 dB，饱和带宽为8.4 ~ 10.4GHz，互作用效率为20%。
Experimental operation of a gyrotron traveling wave amplifier with a helically corrugated waveguide using a thermionic cathode electron gun is presented. The coupling between the second harmonic cyclotron mode of the gyrating electron beam and the radiation occurred in the region of near infinite phase velocity over a broad frequency band. With an axis-encircling electron beam of pitch factor of ∼1.2, energy of 185keV, and current of 6.0A, the amplifier achieved an output power of 220kW, saturated gain of 24dB, saturated bandwidth of 8.4to10.4GHz, and an interaction efficiency of 20%.