High-Power Spatially Extended Free-Electron Masers with Three-Dimensional Distributed Feedback

IF 0.8 4区地球科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Radiophysics and Quantum Electronics Pub Date : 2024-05-11 DOI:10.1007/s11141-024-10312-z

N. Yu. Peskov, E. D. Egorova, N. S. Ginzburg, A. S. Sergeev, A. V. Arzhannikov, S. L. Sinitsky

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Abstract

We study the possibility of using Bragg resonators that implement a three-dimensional distributed feedback mechanism ensuring synchronization of radiation and mode selection under conditions of substantial oversize in three spatial coordinates. To describe the electron–wave interaction in devices of this type, a three-dimensional spatiotemporal averaged model was developed within the framework of the coupled wave approach. On this basis, a planar free-electron maser (FEM) driven by a full-scale electron beam of a sheet configuration with a particle energy of 1 MeV, a current of up to 140 kA, and a cross section of about 1 × 140 cm, which is formed using a high-current accelerating complex U-2 (BINP RAS), was simulated. The possibility of achieving a stable narrow-band oscillation regime in FEMs with a multi-gigawatt power level in the W band with transverse sizes of the proposed resonators from tens to hundreds of radiation wavelengths is demonstrated.

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具有三维分布式反馈的大功率空间扩展自由电子正射器

我们研究了使用布拉格谐振器的可能性，这种谐振器采用三维分布式反馈机制，可确保在三个空间坐标上的超大尺寸条件下同步辐射和模式选择。为了描述这类装置中的电子波相互作用，我们在耦合波方法的框架内建立了一个三维时空平均模型。在此基础上，模拟了由全尺寸片状电子束驱动的平面自由电子马斯炉（FEM），该电子束的粒子能量为 1 MeV，电流高达 140 kA，横截面约为 1 × 140 cm，是利用大电流加速复合器 U-2 （BINP RAS）形成的。结果表明，在 W 波段的几千兆瓦功率水平下，拟议谐振器的横向尺寸从几十个辐射波长到几百个辐射波长不等，均可在有限元模型中实现稳定的窄带振荡机制。

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来源期刊

Radiophysics and Quantum Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED

CiteScore

1.10

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： Radiophysics and Quantum Electronics contains the most recent and best Russian research on topics such as: Radio astronomy; Plasma astrophysics; Ionospheric, atmospheric and oceanic physics; Radiowave propagation; Quantum radiophysics; Pphysics of oscillations and waves; Physics of plasmas; Statistical radiophysics; Electrodynamics; Vacuum and plasma electronics; Acoustics; Solid-state electronics. Radiophysics and Quantum Electronics is a translation of the Russian journal Izvestiya VUZ. Radiofizika, published by the Radiophysical Research Institute and N.I. Lobachevsky State University at Nizhnii Novgorod, Russia. The Russian volume-year is published in English beginning in April. All articles are peer-reviewed.