Development Of 300 Ghz Band Gyrotron For Collective Thomson Scattering Diagnostics In The Large Helical Device
PLASMA AND FUSION RESEARCH(2017)
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 320kW 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. (C) 2017 The Japan Society of Plasma Science and Nuclear Fusion Research
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Key words
gyrotron, sub-THz, collective Thomson scattering, LHD
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