Plasma and Fusion Research

Volume 6, 2401104 (2011)

Regular Articles

Neutral Particle Transport Simulation around a V-Shaped Target Using DEGAS 2 Code
Hiroto MATSUURA, Naoki INAGAKI, Shinichiro KADO1), Suguru MASUZAKI2) and Akira TONEGAWA3)
Osaka Prefecture University, 1-1 Gakuen-chi, Sakai, Naka-ku 599-8531, Japan
1)
The University of Tokyo, Bunkyo-ku 113-8656, Japan
2)
National Institute for Fusion Science, Gifu 509-5292, Japan
3)
Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan
(Received 6 December 2010 / Accepted 23 February 2011 / Published 27 July 2011)

Abstract

A method proposed most recently for heat flux reduction in a divertor is to use a so-called V-shaped target plate. A numerical study of neutral behavior around the V-shaped target in the divertor simulator, Test Plasma produced by Directed current device for sheet plasma (TPD-SheetIV), using DEGAS 2 is reported. The neutral distribution and H-alpha emission profile are modeled and compared for three types of targets, mainly for the low-density attached condition. Under this condition, excited atoms are produced by electron impact with recycled atoms near the target, and hence, H-alpha emission has a peak there.

Keywords

TPD-SheetIV, V-shaped target, detached plasma, DEGAS 2, gas puffing

DOI: 10.1585/pfr.6.2401104

Full Text

PDF format (938Kbytes) PDF Download

References

  • [1] Y. Kamada, J. Plasma Fusion Res. 81, 240 (2010).
  • [2] A. Tonegawa et al., 19th TOKI conference (Toki, 2009) 2P-56.
  • [3] T. Shibata et al., Proc. annual meeting of JSPF, (Utsunomiya, 2008) 4aB25P [in Japanese].
  • [4] H. Matsuura et al., APFA/APPTC (Aomori 2009) P28p-34.
  • [5] A. Tonegawa et al., J. Nucl. Mater. 363-365, 1046 (2003).
  • [6] D.P. Stotler et al., Contrib. Plasma Phys. 34, 392 (1994).
  • [7] D. Heifetz et al., J. Comp. Phys. 46, 309 (1982).
  • [8] H. Matsuura et al., J. Nucl. Mater. 363-365, 806 (2007).

This paper may be cited as follows:

Hiroto MATSUURA, Naoki INAGAKI, Shinichiro KADO, Suguru MASUZAKI and Akira TONEGAWA, Plasma Fusion Res. 6, 2401104 (2011).