Microwave undulator using a helically corrugated waveguide

Liang Zhang; Wenlong He; Jim Clarke; Kevin Ronald; Alan D. R. Phelps; Adrian W. Cross

doi:10.1109/TED.2018.2873726

Microwave undulator using a helically corrugated waveguide

Liang Zhang, Wenlong He, Jim Clarke, Kevin Ronald, Alan D. R. Phelps, Adrian W. Cross

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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.

Original language	English
Pages (from-to)	5499-5504
Number of pages	6
Journal	IEEE Transactions on Electron Devices
Volume	65
Issue number	12
Early online date	16 Oct 2018
DOIs	https://doi.org/10.1109/TED.2018.2873726
Publication status	Published - 31 Dec 2018

Keywords

microwave undulator
free electron laser
helically corrugated waveguide
traveling wave mode

Access to Document

10.1109/TED.2018.2873726

Zhang-etal-IEEE-TED-2018-Microwave-undulator-using-a -elically-corrugatedAccepted author manuscript, 1 MB

Cockcroft Institute / R160525-1
Riis, E. (Principal Investigator), Cross, A. (Co-investigator), Eliasson, B. (Co-investigator), Gray, R. (Co-investigator), Hidding, B. (Co-investigator), Jaroszynski, D. (Co-investigator), McKenna, P. (Co-investigator), McNeil, B. (Co-investigator), Ronald, K. (Co-investigator) & Sheng, Z.-M. (Co-investigator)
1/04/17 → 31/03/22
Project: Research - Internally Allocated

Data for: European Commission – Horizon 2020 funded project Compact Light (XLS) H2020 INFRADEV-2016-2017
Zhang, L. (Creator), Cross, A. (Owner), Nix, L. (Creator) & Ronald, K. (Owner), University of Strathclyde, 13 Aug 2020
DOI: 10.15129/42295778-9279-431a-8f8b-2c7e8f4b25da
Dataset

Cite this

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title = "Microwave undulator using a helically corrugated waveguide",

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.",

keywords = "microwave undulator, free electron laser, helically corrugated waveguide, traveling wave mode",

author = "Liang Zhang and Wenlong He and Jim Clarke and Kevin Ronald and Phelps, {Alan D. R.} and Cross, {Adrian W.}",

note = "{\textcopyright} 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.",

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AU - Zhang, Liang

AU - He, Wenlong

AU - Clarke, Jim

AU - Ronald, Kevin

AU - Phelps, Alan D. R.

AU - Cross, Adrian W.

N1 - © 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.

PY - 2018/12/31

Y1 - 2018/12/31

N2 - 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.

AB - 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.

KW - microwave undulator

KW - free electron laser

KW - helically corrugated waveguide

KW - traveling wave mode

U2 - 10.1109/TED.2018.2873726

DO - 10.1109/TED.2018.2873726

M3 - Article

SN - 0018-9383

VL - 65

SP - 5499

EP - 5504

JO - IEEE Transactions on Electron Devices

JF - IEEE Transactions on Electron Devices

IS - 12

ER -

Microwave undulator using a helically corrugated waveguide

Abstract

Keywords

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Projects

Cockcroft Institute / R160525-1

Datasets

Data for: European Commission – Horizon 2020 funded project Compact Light (XLS) H2020 INFRADEV-2016-2017

Cite this