[Table of Contents]

Plasma and Fusion Research

Volume 9, 1202082 (2014)

Rapid Communications

Development of TESPEL Configurations for Plasma Diagnostics
Shigeru SUDO1,2), Naoki TAMURA1), Chihiro SUZUKI1), Hisamichi FUNABA1,2), Masaru TAKAGI3) and Nakahiro SATOH3)
1)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
2)
The Graduate University for Advanced Studies, Hayama, Kanagawa 240-0193, Japan
3)
Hamamatsu Photonics K.K., 325-6 Sunayama-cho, Naka-ku, Hamamatsu 430-8587, Japan
(Received 21 April 2014 / Accepted 23 April 2014 / Published 10 June 2014)

Abstract

A Tracer-encapsulated Solid Pellet (TESPEL) injection method has been shown to be useful for many fields of plasma diagnostics. In order to provide more flexibility for such plasma diagnostics, we are developing various types of TESPELs. Here we report a new type TESPEL with a thin shell made of poly-dichlorostyrene useful for the impurity transport study. The new multilayer TESPEL configuration is also discussed. This type of TESPEL is not only useful for impurity transport study but also for the neutron observation due to the transient increase of the deuterium in the local position in the plasma for the upcoming LHD D-D experiment.

Keywords

TESPEL, pellet, tracer, impurity diagnostics, neutron diagnostics

DOI: 10.1585/pfr.9.1202082

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References

  • [1] S. Sudo et al., Plasma Fusion Res. 9, 1402039 (2014).
  • [2] M. Takagi et al., Fusion Technol. 41, 278 (2002).
  • [3] J.L. Schwob, A.W. Wouters, S. Suckewer and M. Finkenthal, Rev. Sci. Instrum. 58, 1601 (1987).
  • [4] M. Kobayashi et al., Fusion Sci. Technol. 58, 220 (2010).
  • [5] B.W. McQuillan et al., Fusion Technol. 31, 381 (1997).

This paper may be cited as follows:

Shigeru SUDO, Naoki TAMURA, Chihiro SUZUKI, Hisamichi FUNABA, Masaru TAKAGI and Nakahiro SATOH, Plasma Fusion Res. 9, 1202082 (2014).