Development of a new TZM substrate flowing liquid lithium limiter for high performance plasma discharge in EAST

EAST team

Research output: Contribution to journalArticlepeer-review

Abstract

Liquid metal plasma-facing components (PFCs) provide certain promising advantages as compared with solid PFCs. A new flowing liquid lithium (FLiLi) limiter using a Titanium-Zirconium-Molybdenum Alloy (TZM) material substrate was developed and inserted into H-mode plasmas in EAST. As compared to the previous FLiLi limiters that used a copper heat sink covered with a stainless steel (SS) protective coating, the TZM limiter has better erosion resistance and wettability. Also, helium-cooling and water-cooling simulations show acceptable performance under continuous 2 MW/m2 heat flux deposited on the plate for 10 s. Both simulations show a peak surface temperature located at the ends of the plate where the cooling tubes can't quite reach just below 650℃ while ignoring the influence of Li flowing, evaporation, and vapor shielding. Moreover, FLiLi is introduced to plasma lead to lower recycling and slight storage energy of plasma increase.

Original languageEnglish (US)
Article number111747
JournalFusion Engineering and Design
Volume158
DOIs
StatePublished - Sep 2020

Keywords

  • EAST
  • Limiter
  • Liquid Li
  • TZM alloy

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Development of a new TZM substrate flowing liquid lithium limiter for high performance plasma discharge in EAST'. Together they form a unique fingerprint.

Cite this