The New Method to Focus Multiple Sheet Electron Beam by Periodic Cusped Magnets With Multi-Zeros-Point Bias Magnetic Field

IF 4.1 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Electron Device Letters Pub Date : 2025-02-13 DOI:10.1109/LED.2025.3541232

Pengcheng Yin;Jinchi Cai;Jin Xu;Jian Zhang;Lingna Yue;Hairong Yin;Yong Xu;Guoqing Zhao;Wenxiang Wang;Yanyu Wei

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引用次数: 0

Abstract

The lack of a compact magnetic focusing system hurdles fulfilling the prominent potential of traveling wave tubes (TWTs) launched with multiple sheet electron beams (SEBs). To overcome this dilemma, this letter proposed an intriguing general method to confine multiple SEBs, which adopts novel horizontally extended periodic cusped magnets (PCM) with a multi-zero-point bias magnetic field. A new configuration with bespoke iron notches for multiple SEBs (Open PCM-NMSB) is employed to produce this unique field profile. To verify this concept, a G-band multi-SEB electron optical system (EOS) is presented, depicting that multiple paralleled SEBs can all stably propagate through the narrow tunnel without interceptions. Further investigation demonstrates that this new method can apply to EOS launched with an arbitrary number of SEBs with any preset clearance. In addition, the fabrication and measurement of this compact focusing structure are presented, experimentally confirming that the proposed Open PCM-NMSB can indeed generate the desired magnetic field, which surely facilitates the development of multi-SEB TWT or other similar vacuum electron devices.

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利用多零点偏置磁场的周期性尖头磁体聚焦多片电子束的新方法

紧凑的磁聚焦系统的缺乏阻碍了行波管（twt）利用多片电子束（seb）发射的突出潜力。为了克服这一困境，本文提出了一种有趣的通用方法来限制多个seb，该方法采用具有多重零点偏置磁场的新型水平延伸周期尖头磁铁（PCM）。为多个seb定制铁槽口的新配置（Open PCM-NMSB）用于生成独特的油田剖面。为了验证这一概念，提出了一个g波段多seb电子光学系统（EOS），描述了多个平行seb都可以稳定地通过窄隧道而没有拦截。进一步的研究表明，这种新方法可以适用于任何预设许可的任意数量的seb启动的EOS。此外，本文还介绍了这种紧凑聚焦结构的制作和测量，实验证实了所提出的开放式PCM-NMSB确实可以产生所需的磁场，这必将促进多seb行波管或其他类似真空电子器件的发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Electron Device Letters 工程技术-工程：电子与电气

CiteScore

8.20

自引率

10.20%

发文量

551

审稿时长

1.4 months

期刊介绍： IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.