Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Rapid Communications
Polarization-Controlled Multi-Pass Thomson Scattering System in the Tandem Mirror GAMMA 10
Masayuki YOSHIKAWARyo YASUHARASeito SAKAMOTORyo SEKIGUCHIYoriko SHIMAJunko KOHAGURAMizuki SAKAMOTOYousuke NAKASHIMATsuyoshi IMAIMakoto ICHIMURAIchihiro YAMADAHisamichi FUNABAKazuo KAWAHATATakashi MINAMI
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2013 Volume 8 Pages 1205169

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Abstract

An effective method to increase Thomson scattering (TS) signals is required in low-density plasmas. Multi-pass TS has the advantage of enhancing scattered signals. We constructed a double-pass TS system for a polarization-based system modelled on the GAMMA 10 TS system. In the second step, we have developed the multi-pass TS system based on the former double-pass TS system. In order to evaluate the effectiveness of the polarization-based configuration, the multi-pass system was installed in the GAMMA 10 TS system, which is capable of multi-pass scattering. We undertook Rayleigh scattering experiments. The integrated scattering signal was magnified to be approximately three times as large by using the multi-pass system with 6 passes.

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© 2013 by The Japan Society of Plasma Science and Nuclear Fusion Research
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