@inproceedings{be6e5c5e1974444992c759a45e3abb3c,
title = "Helically corrugated interaction regions for W-band gyrotron-Traveling Wave Amplifiers",
abstract = "The helically corrugated interaction region (HCIR) is able to produce an almost ideal dispersion for microwave oscillators/amplifiers. The HCIR is studied and presented in this paper with particular application in a W-band broadband, kW-level gyrotron traveling wave amplifier (gyro-TWA). The dispersion of the waveguide was calculated, and measurements of a manufactured HCIR showed good agreement with predictions. Numerical simulations of the beam-wave interaction in different circuits showed stable output can be achieved in two gain regions separated by a sever (with purposeful reflections at each end of the circuit). The demonstration of a gyro-TWA based on the HCIR is described with a 3-dB bandwidth of over 5.5 GHz with more than 3.4 kW and the gain was around 36–38 dB. The work presented in this paper will widen the capability of the gyro-TWA from single pulse to high PRF operation.",
keywords = "gyrotron traveling wave amplifier, frequency-swept, helically corrugated waveguide, broadband amplification",
author = "Donaldson, \{Craig R.\} and Liang Zhang and Robertson, \{Craig W.\} and Philip MacInnes and Whyte, \{Colin G.\}",
year = "2023",
month = sep,
day = "19",
doi = "10.23919/eumc58039.2023.10290435",
language = "English",
isbn = "979-8-3503-4739-5",
series = "2023 53rd European Microwave Conference (EuMC)",
publisher = "IEEE",
booktitle = "2023 53rd European Microwave Conference (EuMC)",
note = "2023 53rd European Microwave Conference (EuMC) ; Conference date: 19-09-2023 Through 21-09-2023",
}