Polarization-Controlled Multi-Pass Thomson Scattering System in the Tandem Mirror GAMMA 10

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 d...

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Published inPlasma and Fusion Research Vol. 8; p. 1205169
Main Authors YOSHIKAWA, Masayuki, YASUHARA, Ryo, SAKAMOTO, Seito, SEKIGUCHI, Ryo, SHIMA, Yoriko, KOHAGURA, Junko, SAKAMOTO, Mizuki, NAKASHIMA, Yousuke, IMAI, Tsuyoshi, ICHIMURA, Makoto, YAMADA, Ichihiro, FUNABA, Hisamichi, KAWAHATA, Kazuo, MINAMI, Takashi
Format Journal Article
LanguageEnglish
Published The Japan Society of Plasma Science and Nuclear Fusion Research 2013
Subjects
multi-pass
polarization-controlled
tandem mirror GAMMA 10
Thomson scattering
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Summary: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.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.8.1205169