Back-Surface Temperature Measurements of Thin Tungsten Materials during Plasma-Gun Generated Pulsed Plasma Irradiation using a Fast Two-Color Pyrometer

• SAKUMA Ikko

  Graduate School of Engineering, University of Hyogo

• KIKUCHI Yusuke

  Graduate School of Engineering, University of Hyogo

• ISONO Wataru

  Graduate School of Engineering, University of Hyogo

• NAKAZONO Takumi

  Graduate School of Engineering, University of Hyogo

• NAKANE Masato

  Graduate School of Engineering, University of Hyogo

• FUKUMOTO Naoyuki

  Graduate School of Engineering, University of Hyogo

• NAGATA Masayoshi

  Graduate School of Engineering, University of Hyogo

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 MJm⁻² and ∼1.6 ms, respectively.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 10 (0), 1205089-1205089, 2015

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

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

Details

• CRID: 1390001205253825152
• NII Article ID: 130005286882
• DOI: 10.1585/pfr.10.1205089
• ISSN: 18806821
• Web Site: https://www.jstage.jst.go.jp/article/pfr/10/0/10_1205089/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed