Microwave imaging reflectometry in LHD

S. Yamaguchi; Y. Nagayama; R. Pavlichenko; S. Inagaki; Y. Kogi; A. Mase

doi:10.1063/1.2349749

Microwave imaging reflectometry in LHD

S. Yamaguchi, Y. Nagayama, R. Pavlichenko, S. Inagaki, Y. Kogi, A. Mase

Division of Nuclear Fusion Dynamics

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7 Citations (Scopus)

Abstract

A multichannel reflectometry with an imaging optical system is under development for the measurement of the electron density fluctuations in the Large Helical Device (LHD). The right-hand cutoff layer is utilized as a reflection surface. The angle of an ellipsoidal mirror installed inside the vacuum chamber is remotely adjustable with the ultrasonic motor in order to optimize the illumination angle for the wider range of the plasma parameters. An oscillation due to density fluctuation was observed using the microwave imaging reflectometry for the first time in LHD plasma experiment.

Original language	English
Article number	10E930
Journal	Review of Scientific Instruments
Volume	77
Issue number	10
DOIs	https://doi.org/10.1063/1.2349749
Publication status	Published - Nov 7 2006

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All Science Journal Classification (ASJC) codes

Instrumentation

Cite this

Yamaguchi, S., Nagayama, Y., Pavlichenko, R., Inagaki, S., Kogi, Y., & Mase, A. (2006). Microwave imaging reflectometry in LHD. Review of Scientific Instruments, 77(10), [10E930]. https://doi.org/10.1063/1.2349749

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10.1063/1.2349749