Development of a magnetic cusp gun for a 1-THz harmonic gyrotron

Li, Fan-Hong and Du, Chao-Hai and Zhang, Zi-Wen and Li, Si-Qi and Gao, Zi-Chao and Zhu, Juan-Feng and Ma, Guo-Wu and Huang, Qi-Li and Ma, Hong-Ge and Zhang, Liang and Cross, Adrian W. and Liu, Pu-Kun (2021) Development of a magnetic cusp gun for a 1-THz harmonic gyrotron. IEEE Transactions on Electron Devices. pp. 1-6. ISSN 0018-9383 (In Press)

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Abstract

High-quality axis-encircling electron beam is essential to drive a high-harmonic gyrotron. A magnetic cusp gun that can generate a low-spread axis-encircling electron beam at an extremely high magnetic-compression ratio was developed for a 1-THz 4th-harmonic gyrotron toward continuous-wave operation. The optimized gun could generate an axis-encircling electron beam with 80-kV voltage, 1-A current, and a nearly constant pitch factor of about 1.5 in a wide range of magnetic field strength. The transverse velocity spread was less than 2.1% and the guiding center radius was 26.6 µm. The design was verified by using MAGIC, EGUN, and CST simulations and good agreements were achieved.

ORCID iDs

Li, Fan-Hong, Du, Chao-Hai, Zhang, Zi-Wen, Li, Si-Qi, Gao, Zi-Chao, Zhu, Juan-Feng, Ma, Guo-Wu, Huang, Qi-Li, Ma, Hong-Ge, Zhang, Liang ORCID logoORCID: https://orcid.org/0000-0002-6317-0395, Cross, Adrian W. ORCID logoORCID: https://orcid.org/0000-0001-7672-1283 and Liu, Pu-Kun;
  • Item type:Article
    ID code:78378
    Dates:
    Date
    Event
    7 October 2021
    Published
    7 October 2021
    Accepted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:04 Nov 2021 10:40
    Last modified:02 Oct 2024 00:37
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/78378
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