设计带永磁封装的 X 波段高效同轴相对论后向波振荡器

IF 1.4 4区物理与天体物理 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIP Advances Pub Date : 2024-09-06 DOI:10.1063/5.0223711

Kaiqi Yang, Fugui Zhou, Dian Zhang, Zhenxing Jin, Yujie Xiang, Tengfang Wang, Wei Zhang

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引用次数: 0

摘要

相对论后向波振荡器（RBWOs）具有高功率和高重复率的特点。降低磁场强度和外部永磁体（PM）的重量是 RBWO 的一个重要发展方向。在以往的研究中，用永磁体封装的 X 波段 RBWO 功率效率达到了 50%。然而，这些论文中使用的永磁体需要超过 0.68 T 的磁场幅值，导致重量超过 400 千克。本文设计的 RBWO 工作在同轴 TM01 模式，其阴极与慢波结构表面之间的径向距离达到 7 毫米。在低磁场条件下，这种设计可以提供宽阔的电子束通道，避免电子束包络线与内外导体发生摩擦。粒子池模拟结果表明，这种 RBWO 可在磁场强度为 0.43 T、重量为 74 kg 的 PM 中输出 3 GW 的微波功率，功率效率为 50%。

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Design of an X-band high efficiency coaxial relativistic backward wave oscillator with permanent magnetic package

Relativistic backward wave oscillators (RBWOs) have the characteristics of high power and high repetition rate. Reducing the magnetic field strength and the weight of the external permanent magnet (PM) is a significant development direction of RBWOs. In previous research, an X-band RBWO enclosed with a PM has achieved a power efficiency of 50%. However, the PM used in these papers requires a magnetic field magnitude of over 0.68 T, which leads to a weight exceeding 400 kg. The RBWO designed in this paper operates in coaxial TM01 mode, and the radial distance between its cathode and the surface of the slow wave structures reaches 7 mm. Under the condition of a low magnetic field, this design can provide a wide electron beam channel to avoid the rubbing of the electron beam envelope on the inner and outer conductors. Particle-in-cell simulation results have demonstrated that this RBWO achieves an output microwave power of 3 GW with a power efficiency of 50% enclosed in a PM with a magnetic field strength of 0.43 T and a weight of 74 kg.

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来源期刊

AIP Advances NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

2.80

自引率

6.20%

发文量

1233

审稿时长

2-4 weeks

期刊介绍： AIP Advances is an open access journal publishing in all areas of physical sciences—applied, theoretical, and experimental. All published articles are freely available to read, download, and share. The journal prides itself on the belief that all good science is important and relevant. Our inclusive scope and publication standards make it an essential outlet for scientists in the physical sciences. AIP Advances is a community-based journal, with a fast production cycle. The quick publication process and open-access model allows us to quickly distribute new scientific concepts. Our Editors, assisted by peer review, determine whether a manuscript is technically correct and original. After publication, the readership evaluates whether a manuscript is timely, relevant, or significant.