Microwave undulator using a helically corrugated waveguide

Zhang, Liang and He, Wenlong and Clarke, Jim and Ronald, Kevin and Phelps, Alan D. R. and Cross, Adrian W. (2018) Microwave undulator using a helically corrugated waveguide. IEEE Transactions on Electron Devices, 65 (12). pp. 5499-5504. ISSN 0018-9383 (https://doi.org/10.1109/TED.2018.2873726)

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Abstract

Microwave undulators (MU) can be an alternative to the permanent magnet undulators in a free electron laser (FEL). MUs normally employ a cavity-type structure that supports the standing wave to boost the electromagnetic field strength. In this paper, a waveguide-type MU based on a helically corrugated waveguide (HCW) that supports a traveling wave is studied. The use of the HCW allows partial conversion of a traveling wave mode into a backward traveling wave mode, hence increasing the effective interaction length. When operating with a TE11 mode at 30.3 GHz, the MU was predicted to realize a field strength of ~0.3 T and an undulator period of 4.95 mm when driven by 1 GW of microwave power. The support of the STFC UK (Cockcroft Institute Core GrantR160525-1) is gratefully acknowledged. This work is supported by European Union (EU) Horizon 2020 Project “CompactLight” 2017-2021. “CompactLight” grant code: 777431-XLS. Published data 26 November 2018, under Self-archiving / 'green' OA.

  • Item type:Article
    ID code:65580
    Dates:
    Date
    Event
    31 December 2018
    Published
    16 October 2018
    Published Online
    29 September 2018
    Accepted
    Notes:© 2018 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:01 Oct 2018 12:00
    Last modified:09 Apr 2024 00:19
    URI:https://strathprints.strath.ac.uk/id/eprint/65580
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