An extended interaction oscillator based on a complex resonator structure
An extended interaction oscillator based on a complex resonator structure
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DOI：
10.1109/27.887688
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发表时间：
2000-06
影响因子：
1.5
通讯作者：
Leeming Chen;Hezhong Guo;Han-Ying Chen;M. Tsao;Tz-Te Yang;Y. Tsai;K. Chu
中科院分区：
文献类型：
--
作者：
Leeming Chen;Hezhong Guo;Han-Ying Chen;M. Tsao;Tz-Te Yang;Y. Tsai;K. Chu
本文报道了一种在复杂扩展相互作用结构中线性电子束与电磁波有效相互作用的新方案的实验研究。该结构包括一个高R/Q、五间隙、耦合腔谐振器，该谐振器包含放置在第一腔和第二腔之间的四分之一等离子体波长的同轴部分。在同轴截面中，波束和波在不同的通道中传播。第一腔通过同轴部分的波通道与其他腔强耦合，作为聚束腔。内部通道穿过同轴部分的中心导体，为电子的弹道聚束提供了一个截止漂移空间，这一效应被证明可以显著提高相互作用效率。在16.6 GHz下，振荡功率为2.2 kW，相互作用效率为30%。通过引入两级压降收集器，总效率进一步提高到41%。
We report experimental investigation of a novel scheme for efficient interaction between a linear electron beam and an electromagnetic wave in a complex extended interaction structure. The structure of interest consists of a high R/Q, five-gap, coupled-cavity resonator that incorporates a coaxial section of a quarter plasma wavelength placed between the first and second cavities. In the coaxial section, beam and wave propagate in separate channels. The first cavity, strongly coupled to the other cavities through the wave channel of the coaxial section, serves as a buncher cavity. An inner channel running through the center conductor of the coaxial section provides a cutoff drift space for ballistic bunching of electrons, an effect that is shown to significantly enhance the interaction efficiency. Oscillation power of 2.2 kW at 16.6 GHz was demonstrated with an interaction efficiency of 30%. The total efficiency was further increased to 41% by incorporation of a two-stage depressed collector.