[Table of Contents]

Plasma and Fusion Research

Volume 3, 027 (2008)

Rapid Communications

Development of a Compact Thomson Scattering System for the TST-2 Spherical Tokamak
Soichiro KAINAGA, Akira EJIRI1), Yuichi TAKASE1), Osamu WATANABE2), Yuuki ADACHI1), Takuya OOSAKO1), Makoto SASAKI, Hiroshi TOJO1), Tetsuya MASUDA1), Junichi SUGIYAMA1) and Takashi YAMAGUCHI1)
Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
High Temperature Plasma Center, The University of Tokyo, Kashiwa 277-8568, Japan
(Received 21 March 2008 / Accepted 28 April 2008 / Published 5 June 2008)


A compact Nd:YAG laser Thomson scattering system was constructed and applied to the TST-2 spherical tokamak in order to measure the electron temperature and the electron density. A large solid angle (∼35 msr) was achieved by use of a compact Newtonian mirror system for the collection optics. Absolute calibration was performed by Rayleigh scattering. An electron temperature increase from 140 eV to 210 eV was observed upon injection of 200 kW of RF power.


spherical tokamak, TST-2, Thomson scattering, Newtonian mirror system

DOI: 10.1585/pfr.3.027


  • [1] Y. Takase et al., Nucl. Fusion 41, 1543 (2001).
  • [2] M. Ono, Phys. Plasmas 2, 4075 (1995).

This paper may be cited as follows:

Soichiro KAINAGA, Akira EJIRI, Yuichi TAKASE, Osamu WATANABE, Yuuki ADACHI, Takuya OOSAKO, Makoto SASAKI, Hiroshi TOJO, Tetsuya MASUDA, Junichi SUGIYAMA and Takashi YAMAGUCHI, Plasma Fusion Res. 3, 027 (2008).