8-fold helically corrugated interaction region for high power gyroresonant THz sources

Craig R. Donaldson; Liang Zhang; Michael Harris; Matthew J. Beardsley; Peter G. Huggard; Colin G. Whyte; Adrian W. Cross; Wenlong He

doi:10.1109/LED.2021.3105435

8-fold helically corrugated interaction region for high power gyroresonant THz sources

Craig R. Donaldson, Liang Zhang, Michael Harris, Matthew J. Beardsley, Peter G. Huggard, Colin G. Whyte, Adrian W. Cross, Wenlong He

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

51 Downloads (Pure)

Abstract

A manufacturing study of a 0.372 THz 8-fold (8F) helically corrugated interaction region (HCIR) and measurement of its wave dispersion characteristics are reported. This demonstrates the structure’s suitability as the electron beam / electromagnetic wave interaction region in a high power frequency tunable Gyroresonant THz source. The 8F HCIR has an eigenmode, which is ideal for broadband tuning, created by the coupling of the TE61 and TE23 modes. Maximum power handling of 14 times larger than a 3-fold HCIR at the same frequency is calculated. A TE11 to TE61 7-fold (7F) helically corrugated waveguide (HCW) mode converter, needed to measure the wave dispersion of the 8F HCIR, was designed and constructed. Negative aluminium mandrels of the 7F HCW mode converter and 8F HCIR were manufactured. Copper structures were constructed through electroforming. The measured wave dispersion of the 0.372 THz 8F HCIR agreed well with simulated dispersion characteristics.

Original language	English
Pages (from-to)	1544-1547
Number of pages	4
Journal	IEEE Electron Device Letters
Volume	42
Issue number	10
Early online date	17 Aug 2021
DOIs	https://doi.org/10.1109/LED.2021.3105435
Publication status	Published - 1 Oct 2021

Keywords

helically corrugated waveguide
precise manufacture
THz sources

Access to Document

10.1109/LED.2021.3105435

Donaldson-etal-IEEE-EDL-2021-8-Fold-helically-corrugated-interaction-regionAccepted author manuscript, 2.29 MB

DC power supply to drive W-band gyrotron travelling wave amplifier for satellite uplink and wireless telecommunication applications
Cross, A. (Principal Investigator) & Ronald, K. (Co-investigator)
STFC Science and Technology Facilities Council
1/11/19 → 30/04/20
Project: Research
Gyrotron Travelling Wave Amplifier for high field Electron Paramagnetic Resonance
Cross, A. (Principal Investigator), He, W. (Co-investigator) & Ronald, K. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/06/13 → 30/11/16
Project: Research

Cite this

@article{4d01ef197c7747d8b85ae6c6a033e147,

title = "8-fold helically corrugated interaction region for high power gyroresonant THz sources",

abstract = "A manufacturing study of a 0.372 THz 8-fold (8F) helically corrugated interaction region (HCIR) and measurement of its wave dispersion characteristics are reported. This demonstrates the structure{\textquoteright}s suitability as the electron beam / electromagnetic wave interaction region in a high power frequency tunable Gyroresonant THz source. The 8F HCIR has an eigenmode, which is ideal for broadband tuning, created by the coupling of the TE61 and TE23 modes. Maximum power handling of 14 times larger than a 3-fold HCIR at the same frequency is calculated. A TE11 to TE61 7-fold (7F) helically corrugated waveguide (HCW) mode converter, needed to measure the wave dispersion of the 8F HCIR, was designed and constructed. Negative aluminium mandrels of the 7F HCW mode converter and 8F HCIR were manufactured. Copper structures were constructed through electroforming. The measured wave dispersion of the 0.372 THz 8F HCIR agreed well with simulated dispersion characteristics.",

keywords = "helically corrugated waveguide, precise manufacture, THz sources",

author = "Donaldson, {Craig R.} and Liang Zhang and Michael Harris and Beardsley, {Matthew J.} and Huggard, {Peter G.} and Whyte, {Colin G.} and Cross, {Adrian W.} and Wenlong He",

note = "{\textcopyright} 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.",

year = "2021",

month = oct,

day = "1",

doi = "10.1109/LED.2021.3105435",

language = "English",

volume = "42",

pages = "1544--1547",

journal = "IEEE Electron Device Letters ",

issn = "0741-3106",

number = "10",

}

TY - JOUR

T1 - 8-fold helically corrugated interaction region for high power gyroresonant THz sources

AU - Donaldson, Craig R.

AU - Zhang, Liang

AU - Harris, Michael

AU - Beardsley, Matthew J.

AU - Huggard, Peter G.

AU - Whyte, Colin G.

AU - Cross, Adrian W.

AU - He, Wenlong

N1 - © 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.

PY - 2021/10/1

Y1 - 2021/10/1

N2 - A manufacturing study of a 0.372 THz 8-fold (8F) helically corrugated interaction region (HCIR) and measurement of its wave dispersion characteristics are reported. This demonstrates the structure’s suitability as the electron beam / electromagnetic wave interaction region in a high power frequency tunable Gyroresonant THz source. The 8F HCIR has an eigenmode, which is ideal for broadband tuning, created by the coupling of the TE61 and TE23 modes. Maximum power handling of 14 times larger than a 3-fold HCIR at the same frequency is calculated. A TE11 to TE61 7-fold (7F) helically corrugated waveguide (HCW) mode converter, needed to measure the wave dispersion of the 8F HCIR, was designed and constructed. Negative aluminium mandrels of the 7F HCW mode converter and 8F HCIR were manufactured. Copper structures were constructed through electroforming. The measured wave dispersion of the 0.372 THz 8F HCIR agreed well with simulated dispersion characteristics.

AB - A manufacturing study of a 0.372 THz 8-fold (8F) helically corrugated interaction region (HCIR) and measurement of its wave dispersion characteristics are reported. This demonstrates the structure’s suitability as the electron beam / electromagnetic wave interaction region in a high power frequency tunable Gyroresonant THz source. The 8F HCIR has an eigenmode, which is ideal for broadband tuning, created by the coupling of the TE61 and TE23 modes. Maximum power handling of 14 times larger than a 3-fold HCIR at the same frequency is calculated. A TE11 to TE61 7-fold (7F) helically corrugated waveguide (HCW) mode converter, needed to measure the wave dispersion of the 8F HCIR, was designed and constructed. Negative aluminium mandrels of the 7F HCW mode converter and 8F HCIR were manufactured. Copper structures were constructed through electroforming. The measured wave dispersion of the 0.372 THz 8F HCIR agreed well with simulated dispersion characteristics.

KW - helically corrugated waveguide

KW - precise manufacture

KW - THz sources

U2 - 10.1109/LED.2021.3105435

DO - 10.1109/LED.2021.3105435

M3 - Article

SN - 0741-3106

VL - 42

SP - 1544

EP - 1547

JO - IEEE Electron Device Letters

JF - IEEE Electron Device Letters

IS - 10

ER -

8-fold helically corrugated interaction region for high power gyroresonant THz sources

Abstract

Keywords

Access to Document

Fingerprint

Projects

DC power supply to drive W-band gyrotron travelling wave amplifier for satellite uplink and wireless telecommunication applications

Gyrotron Travelling Wave Amplifier for high field Electron Paramagnetic Resonance

Cite this