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Study on a Depressed Collector for a 75 GHz Low-Voltage Compact Gyrotron for Industrial Application
Journal of Infrared Millimeter and Terahertz Waves ( IF 2.9 ) Pub Date : 2021-01-07 , DOI: 10.1007/s10762-020-00761-8
Dun Lu , Wenjie Fu , Xiaotong Guan , Tongbin Yang , Yang Yan

The low-voltage compact gyrotron is suitable for industrial applications. However, the beam-wave interaction efficiency is low in conventional low-voltage gyrotron. To improve the whole tube efficiency, a compact depressed collector is introduced in developing a 75 GHz low-voltage compact gyrotron. The compact depressed collector is directly connected to the output waveguide. It is grounded and isolated with the cavity by a ceramic ring which is easy to be connected with the application system. The design of the original tube electron beam voltage and electron beam current are 10 kV and 1.2 A. In the particle-in-cell (PIC) simulation, the operating mode is TE0,1 and the generated power is 1.2 kW operated at the frequency of 75.5 GHz, which corresponds to an electron efficiency of 10%. When the depressed collector is performed and the electron reflux is under 5%, the efficiency of the whole tube can reach 30%, and when the reflux rate is controlled at about 15%, the efficiency of the whole tube can reach 50%. The dissipation power would be sufficiently reduced.



中文翻译:

工业应用75 GHz低压紧凑型回旋加速器的低压集电极的研究

低压紧凑型回旋管适用于工业应用。然而,在传统的低压回旋管中,束波相互作用效率低。为了提高整个管的效率,在开发75 GHz低压紧凑型回旋管时引入了紧凑的低压集电极。紧凑的凹陷式集电极直接连接到输出波导。它通过陶瓷环接地并与空腔隔离,该陶瓷环易于与应用系统连接。原始电子管的电子束电压和电子束电流的设计分别为10 kV和1.2A。在质点(PIC)模拟中,工作模式为TE 0,1产生的功率为1.2 kW,工作频率为75.5 GHz,相当于10%的电子效率。当进行凹陷收集器并且电子回流低于5%时,整个管的效率可以达到30%,而当回流率控制在15%左右时,整个管的效率可以达到50%。耗散功率将被充分降低。

更新日期:2021-01-07
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