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Upgraded flowing liquid lithium limiter for improving Li coverage uniformity and erosion resistance in EAST device

  • G. Z. Zuo
  • , J. S. Hu
  • , R. Maingi
  • , Q. X. Yang
  • , Z. Sun
  • , M. Huang
  • , Y. Chen
  • , X. L. Yuan
  • , X. C. Meng
  • , W. Xu
  • , C. Gentile
  • , A. Carpe
  • , A. Diallo
  • , R. Lunsford
  • , D. Mansfield
  • , T. Osborne
  • , K. Tritz
  • , J. G. Li
  • CAS - Institute of Plasma Physics
  • Princeton Plasma Physics Laboratory
  • Hunan University
  • General Atomics
  • Johns Hopkins University

科研成果: 期刊稿件文章同行评审

22 引用 (Scopus)

摘要

We report on design and technology improvements for a flowing liquid lithium (FLiLi) limiter inserted into auxiliary heated discharges in the experimental advanced superconducting tokamak device. In order to enhance Li coverage uniformity and erosion resistance, a new liquid Li distributor with homogenous channels was implemented. In addition, two independent electromagnetic pumps and a new horizontal capillary structure contributed to an improvement in the observed Li flow uniformity (from 30% in the previous FLiLi design to >80% in this FLiLi design). To improve limiter surface erosion resistance, hot isostatic press technology was applied, which improved the thermal contact between thin stainless steel protective layers covering the Cu heat sink. The thickness of the stainless steel layer was increased from 0.1 mm to 0.5 mm, which also helped macroscopic erosion resilience. Despite the high auxiliary heating power up to 4.5 MW, no Li bursts were recorded from FLiLi, underscoring the improved performance of this new design.

源语言英语
期刊论文编号123506
期刊Review of Scientific Instruments
88
12
DOI
出版状态已出版 - 1 12月 2017

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