Electron Temperature Measurement on QUEST Spherical Tokamak by Thomson Scattering System

• YAMAGUCHI Takashi

  Graduate School of Frontier Sciences, The University of Tokyo

• EJIRI Akira

  Graduate School of Frontier Sciences, The University of Tokyo

• HIRATSUKA Junichi

  Graduate School of Science, The University of Tokyo

• HASEGAWA Makoto

  Research Institute for Applied Mechanics, Kyushu University

• NAGASHIMA Yoshihiko

  Research Institute for Applied Mechanics, Kyushu University

• NARIHARA Kazumichi

  National Institute for Fusion Science

• TAKASE Yuichi

  Graduate School of Frontier Sciences, The University of Tokyo

• ZUSHI Hideki

  Research Institute for Applied Mechanics, Kyushu University

• QUEST group the

  Research Institute for Applied Mechanics, Kyushu University

抄録

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.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 8 (0), 1302001-1302001, 2013

  一般社団法人 プラズマ・核融合学会

キーワード

• Thomson scattering
• spherical tokamak
• steady state plasma
• low-density plasma

詳細情報

• CRID: 1390282680232664192
• NII論文ID: 130003366293
• DOI: 10.1585/pfr.8.1302001
• ISSN: 18806821
• Web Site: https://www.jstage.jst.go.jp/article/pfr/8/0/8_1302001/_pdf
• 本文言語コード: en
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