[Table of Contents]

Plasma and Fusion Research

Volume 2, S1038 (2007)

Regular Articles

Microwave Imaging Reflectometry in LHD
S. YAMAGUCHI, Y. NAGAYAMA, Z. SHI1), R. PAVLICHENKO, S. INAGAKI, Y. KOGI2) and A. MASE2)
National Institute for Fusion Science, Toki 509-5292, Japan
1)
Graduate University for Advanced Studies, Miura 240-0193, Japan
2)
Art Science and Technology Center for Cooperative Research, Kyushu Univ., Kasuga 816-8580, Japan
(Received 19 December 2006 / Accepted 6 May 2007 / Published 20 November 2007)

Abstract

Microwave Imaging Reflectometry (MIR) is under development for 2-D/3-D measurement of the electron density fluctuations in Large Helical Device (LHD). A rotatable ellipsoidal mirror has been installed inside the vacuum chamber of LHD in order to optimize the illumination beam angle vertically and horizontally. The illumination and reflected beam paths near the reflection surface are calculated by using the ray-tracing code. The illumination angles are optimized in the plasma experiment.

Keywords

MIR, microwave, imaging, reflectometry, LHD

DOI: 10.1585/pfr.2.S1038

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References

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This paper may be cited as follows:

S. YAMAGUCHI, Y. NAGAYAMA, Z. SHI, R. PAVLICHENKO, S. INAGAKI, Y. KOGI and A. MASE, Plasma Fusion Res. 2, S1038 (2007).