Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Rapid Communications
Development of 300 GHz Band Gyrotron for Collective Thomson Scattering Diagnostics in the Large Helical Device
Teruo SAITOYuusuke YAMAGUCHIYoshinori TATEMATSUMasafumi FUKUNARITakumi HIROBEShunsuke TANAKARyuji SHINBAYASHITakashi SHIMOZUMAShin KUBOKenji TANAKAMasaki NISHIURA
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2017 Volume 12 Pages 1206013

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Abstract

A 300 GHz pulse gyrotron has been developed for use in collective Thomson scattering (CTS) diagnostics in the Large Helical Device (LHD). Single-mode oscillation power of more than 320 kW was produced. The radiation beam has a Gaussian pattern. The frequency spectrum is very narrow and stable across the pulse width. No competing mode was observed in the oscillation pulse, including during the turn-on and turn-off phases.

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© 2017 by The Japan Society of Plasma Science and Nuclear Fusion Research
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