[Table of Contents]

Plasma and Fusion Research

Volume 10, 1205089 (2015)

Rapid Communications


Back-Surface Temperature Measurements of Thin Tungsten Materials during Plasma-Gun Generated Pulsed Plasma Irradiation using a Fast Two-Color Pyrometer
Ikko SAKUMA, Yusuke KIKUCHI, Wataru ISONO, Takumi NAKAZONO, Masato NAKANE, Naoyuki FUKUMOTO and Masayoshi NAGATA
Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
(Received 30 September 2015 / Accepted 19 October 2015 / Published 28 December 2015)

Abstract

A fast two-color pyrometer system was developed to measure the back-surface temperature of thin tungsten materials during plasma-gun generated edge localized mode-like pulsed plasma irradiation. The developed pyrometer system had a time resolution of ∼ 5 µs and the lowest measureable temperature was ∼ 1600 K. We observed that the back-surface temperature of the thin tungsten material during the pulsed plasma irradiation reached ∼ 3280 K. The absorbed energy density and the pulse width of the pulsed heat load estimated by the measured time evolution of the back-surface temperature and 3D heat analyses using ANSYS code were ∼ 0.52 MJ m−2 and ∼ 1.6 ms, respectively.


Keywords

ELM-like pulsed plasma, plasma gun, two-color pyrometer, tungsten, divertor

DOI: 10.1585/pfr.10.1205089


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This paper may be cited as follows:

Ikko SAKUMA, Yusuke KIKUCHI, Wataru ISONO, Takumi NAKAZONO, Masato NAKANE, Naoyuki FUKUMOTO and Masayoshi NAGATA, Plasma Fusion Res. 10, 1205089 (2015).