Electron temperature measurement on QUEST spherical tokamak by thomson scattering system

Takashi Yamaguchi; Akira Ejiri; Junichi Hiratsuka; Makoto Hasegawa; Yoshihiko Nagashima; Kazumichi Narihara; Yuichi Takase; Hideki Zushi

doi:10.1585/pfr.8.1302001

Electron temperature measurement on QUEST spherical tokamak by thomson scattering system

Takashi Yamaguchi, Akira Ejiri, Junichi Hiratsuka, Makoto Hasegawa, Yoshihiko Nagashima, Kazumichi Narihara, Yuichi Takase, Hideki Zushi

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

On QUEST, we are carrying out the steady state operation by RF current drive. A Thomson scattering (TS) system has been constructed to measure the plasma electron temperature. This system consists of a Nd:YAG laser of energy 1.65 J, a spherical mirror for collection of the scattering light, and a polychromator for spectroscopy. Because the Thomson scattering signal is weak for the low-density RF-sustained plasma, many scattering pulse signals were accumulated from steady-state plasmas. Electron temperature profiles were obtained for the steadystate spherical tokamak (ST) plasma for the first time. Six spatial points were measured by moving the fiber position, and the plasma electron temperature was in the range 10-500 eV.

Original language	English
Article number	1302001
Journal	Plasma and Fusion Research
Volume	8
Issue number	2013
DOIs	https://doi.org/10.1585/pfr.8.1302001
Publication status	Published - Jun 24 2013

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1585/pfr.8.1302001

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Yamaguchi, T., Ejiri, A., Hiratsuka, J., Hasegawa, M., Nagashima, Y., Narihara, K., Takase, Y., & Zushi, H. (2013). Electron temperature measurement on QUEST spherical tokamak by thomson scattering system. Plasma and Fusion Research, 8(2013), [1302001]. https://doi.org/10.1585/pfr.8.1302001

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AU - Yamaguchi, Takashi

AU - Ejiri, Akira

AU - Hiratsuka, Junichi

AU - Hasegawa, Makoto

AU - Nagashima, Yoshihiko

AU - Narihara, Kazumichi

AU - Takase, Yuichi

AU - Zushi, Hideki

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