Influence of the radial dimension on the high-frequency characteristics in the coaxial relativistic O-type Cherenkov oscillators

Influence of the radial dimension on the high-frequency characteristics in the coaxial relativistic O-type Cherenkov oscillators
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径向尺寸对同轴相对论O型切伦科夫振荡器高频特性的影响

DOI:
10.1063/1.5143063
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发表时间:
2020-04
期刊:
影响因子:
1.6
通讯作者:
e Zhang
e Zhang
中科院分区:
材料科学4区
文献类型:
--
作者:
Jun Zhang;Siyao Chen;Peng Zhang;Xingjun Ge;Ji;e Zhang

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在相对论O型切伦科夫振荡器中,通常采用同轴慢波结构来提高功率处理能力。然而,人们很少注意到规则性以及使用大平均半径可能带来的问题。本研究的目的是研究同轴慢波结构的高频特性,以全面评估径向尺寸的影响。结果表明,较大的过模比可以使功率处理能力显著提高,但也会带来效率低、启动时间长、模式控制困难等问题。此外,本文还给出了使用大径向尺寸时的一些建议和注意事项。本文的结论对同轴慢波结构的设计具有很强的适用性。
Coaxial slow wave structures have always been used to enhance the power handling capacity in the relativistic O-type Cherenkov oscillators generally. However, little attention has been paid to the regularity and the problem it may bring by using large average radius. The aim of this study was to investigate the high-frequency characteristics of coaxial slow wave structures in order to evaluate the influence of the radial dimension comprehensively. The results indicate that a large overmoded ratio can make the power handling capacity increase significantly, but as a result, it will bring some problems such as low efficiency, long starting time, and the difficulty in mode control. In addition, this paper also gives some suggestions and precautions for using large radial dimensions. The conclusion of this paper has strong applicability for the design of coaxial slow wave structures.
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