Microwave Imaging Reflectometry Experiment in TPE-RX

Yoshio NAGAYAMA; Soichiro YAMAGUCHI; Zhongbing SHI; Yuichiro KOGI; Atsushi MASE; Shoji SUGITO; Yoichi HIRANO; Satoru KIYAMA; Haruhisa KOGUCHI; Hajime SAKAKITA; Kiyoyuki YAMBE; Nobuyoshi OHYABU

doi:10.1585/pfr.3.053

Regular Articles

Microwave Imaging Reflectometry Experiment in TPE-RX

Yoshio NAGAYAMA, Soichiro YAMAGUCHI, Zhongbing SHI, Yuichiro KOGI, Atsushi MASE, Shoji SUGITO, Yoichi HIRANO, Satoru KIYAMA, Haruhisa KOGUCHI, Hajime SAKAKITA, Kiyoyuki YAMBE, Nobuyoshi OHYABU

Author information

Yoshio NAGAYAMA
National Institute for Fusion Science, Toki 509-5292, Japan
Soichiro YAMAGUCHI
Kansai University, Suita 564-8680, Japan
Zhongbing SHI
The Graduate University for Advanced Studies, Toki 509-5292, Japan
Yuichiro KOGI
KASTEC, Kyushu University, Kasuga 816-8580, Japan
Atsushi MASE
KASTEC, Kyushu University, Kasuga 816-8580, Japan
Shoji SUGITO
National Institute for Fusion Science, Toki 509-5292, Japan
Yoichi HIRANO
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
Satoru KIYAMA
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
Haruhisa KOGUCHI
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
Hajime SAKAKITA
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
Kiyoyuki YAMBE
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
Nobuyoshi OHYABU
National Institute for Fusion Science, Toki 509-5292, Japan

Keywords: MIR (microwave imaging reflectometry), density fluctuation, RFP (reversed field pinch), TPE-RX

JOURNAL FREE ACCESS

2008 Volume 3 Pages 053

DOI https://doi.org/10.1585/pfr.3.053

Details

Abstract

Microwave imaging reflectometry (MIR) was developed in TPE-RX, one of the world's largest reversed field pinch (RFP) devices. The system optics are made of aluminum mirrors, Teflon lenses, and Plexiglas plates in order to reduce size. In this system, frequencies are stabilized so that noise can be reduced using narrow bandpass filters. A 4×4 2-D mixer array and phase detection system have also been developed. With this system, density fluctuations in the high-Θ RFP plasma, pulsed poloidal current drive (PPCD) plasma, and quasi-single helicity (QSH) plasma are observed in TPE-RX. This is the first MIR experiment in an RFP device.

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