New Challenges in Electron Beams

A special issue of Quantum Beam Science (ISSN 2412-382X).

Deadline for manuscript submissions: 30 April 2025 | Viewed by 1465

Special Issue Editor


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Guest Editor
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
Interests: high-power vacuum electron devices (VEDs) in the millimeter wave band such as TWT, sheet beam TWT, Gyro-TWT, etc.; electron optics system (EOS) investigation including magnetron injection gun (MIG), sheet beam gun (SBG), etc.; thermal and hydraulic management and investigation in vacuum electron devices

Special Issue Information

Dear Colleagues,

The electron beam is the foundation of modern electronic technology, and its applications can be seen everywhere in our daily life. With the development of technology, the trend of the electron beam has moved towards higher power and higher energy. Related technologies are widely used in microwave tubes, accelerators, vacuum displays, materials processing technologies, ion beam devices, electron beam lithography, etc. However, the generation, formation, and transportation of high-power/high-energy beams are a challenge for researchers. Combining our professional fields and promoting technology development, this Special Issue "New Challenges in Electron Beams" mainly introduces the latest progress and applications of high-power electron beams in various vacuum electron devices (VEDs), including the gyrotron, gyro-traveling-wave tube, traveling-wave tube, klystron, backward wave oscillator, series sheet beam devices, pseudospark, etc. The purpose of this Special Issue is to attract novel and advanced research work related to the design, experimental implementation, and application of high-power electron beams. We also welcome manuscripts on the integration of high-power electron beams in other fields.

The scope of this Special Issue incorporates a wide range of topics on electron beams and their applications, including, but not limited to, the following:

  • Novel electron gun design for various vacuum electron devices;
  • Electron emission theory, material, and cathode investigation;
  • Phenomenon investigation for breakdown, ionization, and halo in the electron beam generation and transportation processes;
  • Thermal analysis for high-power electron optics systems;
  • Applications such as accelerators, vacuum displays, materials processing technologies, electron beam lithography, etc.;
  • Related interdisciplinary technologies to improve current electron beam performance or extend the application scope.

Dr. Wei Jiang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Quantum Beam Science is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electron beam
  • vacuum electron devices
  • phenomenon investigation of breakdown, ionization, and halo
  • electron beam generation, formation, and transportation
  • thermal analysis for high-power electron optics systems

Published Papers (1 paper)

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Research

13 pages, 9069 KiB  
Article
Helical Electron Beam Status Online Evaluation for Magnetron Injection Gun
by Wei Jiang, Chaoxuan Lu, Binyang Han, Boxin Dai, Qiang Zheng, Guo Liu, Jianxun Wang and Yong Luo
Quantum Beam Sci. 2024, 8(1), 3; https://doi.org/10.3390/qubs8010003 - 29 Dec 2023
Viewed by 1204
Abstract
The magnetron injection gun (MIG) is an essential component of the gyrotron traveling wave tube (gyro-TWT). Although the electron beam status influences the performance of the device, it cannot be measured directly in the experiment. An online evaluation module (OEM) for the experiment [...] Read more.
The magnetron injection gun (MIG) is an essential component of the gyrotron traveling wave tube (gyro-TWT). Although the electron beam status influences the performance of the device, it cannot be measured directly in the experiment. An online evaluation module (OEM) for the experiment is developed to calculate the instant beam parameters of MIG. The OEM, by reconstructing the geometry of the MIG and related magnetic field distribution, can obtain the electron beam status under the operating parameters through the online simulation. The beam velocity spread of thermal emission with instant temperature and surface roughness are also considered. The validation is done in a W-band gyro-TWT, and the beam performance is evaluated in the experiment. With a pitch factor of 1.06 electron beam, the velocity spread affected by the electric-magnetic mismatch, thermal emission, and roughness is 1.00%, 0.56%, and 0.43%, respectively. The other beam parameters are also presented in the developed module. The OEM could guide and accelerate the testing process and ensure the safe and stable operation of the device. Full article
(This article belongs to the Special Issue New Challenges in Electron Beams)
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