Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Regular Articles
Ka-band Microwave Frequency Comb Doppler Reflectometer System for the Large Helical Device
Tokihiko TOKUZAWAShigeru INAGAKIAkira EJIRIRyota SOGAIchihiro YAMADAShin KUBOMikiro YOSHINUMAKatsumi IDAChihiro SUZUKIKenji TANAKATsuyoshi AKIYAMANaohiro KASUYAKimitaka ITOHKiyomasa WATANABEHiroshi YAMADAKazuo KAWAHATALHD Experiment Group
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2014 Volume 9 Pages 1402149

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Abstract

A ka-band multi-channel Doppler reflectometer system was constructed for the Large Helical Device (LHD) using a comb frequency generator as a source. A filter bank system is utilized for precise quadrature phase detection, and preliminary back-scattered waves were obtained in LHD plasma experiments. In addition, a direct digital signal acquisition system was successfully demonstrated for providing a greater number of multi-channel measurements.

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© 2014 by The Japan Society of Plasma Science and Nuclear Fusion Research
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