Assessing Surface Roughness Effect in Gyrotrons With the Gradient Conductivity Model

To accurately characterize the effect of the cavity surface roughness on the ohmic loss in gyrotron oscillators, this article proposes a method by using the gradient conductivity (GC) assessment model, in which a derived effective conductivity parameter is used to characterize the surface roughness....

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Bibliographic Details
Published in:IEEE transactions on electron devices 2023-06, Vol.70 (6), p.1-5
Main Authors: Huang, Yu, Xiao, Houxiu, Chen, Xianfei, Wang, Zhenglei, Qiu, Zhiyu
Format: Article
Language:English
Subjects:
Analytical models
Conductivity
Cyclotron resonance devices
Gradient conductivity (GC) model
gyrotron
Gyrotrons
ohmic loss
Rough surfaces
Skin
Surface roughness
Surface roughness effects
Surface treatment
Terahertz frequencies
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Summary:To accurately characterize the effect of the cavity surface roughness on the ohmic loss in gyrotron oscillators, this article proposes a method by using the gradient conductivity (GC) assessment model, in which a derived effective conductivity parameter is used to characterize the surface roughness. The results show that it has higher accuracy than the conventional methods such as the H-B formula, especially in the terahertz frequency band. This model also provides a reasonable explanation for the low-efficiency problem in terahertz gyrotrons, and it is beneficial to promote the design and analysis of gyrotrons.
ISSN:0018-9383
1557-9646
DOI:10.1109/TED.2022.3206263