Experiments of continuously and stably flowing lithium limiter in EAST towards a solution for the power exhaust of future fusion devices

EAST team

Research output: Contribution to journalArticle

Abstract

Liquid lithium (Li) can partly ameliorate lifetime and power-exhaust issues of plasma facing components (PFCs) by enabling a self-healing, self-replenishing surface with a reduced susceptibility to neutron damage in future fusion devices. To assess operational stability and heat-exhaust capability under tokamak exposure, two generations of continuously flowing liquid Li (FLiLi) limiters on the concept of a thin flowing Li film have been successfully designed and tested in high performance discharges in EAST. The design uses a circulating Li layer with a thickness of <0.1 mm and a flow rate ∼2 cm 3 s −1 . In addition, the limiter employs a novel electro-magnetic pump to drive liquid Li flow from a collector at the bottom of the limiter into a distributor at its top. Free surface gravitational flow closes the loop for a continuously flowing liquid Li film on the wetted PFC. Here we summarize key FLiLi limiter development and experimental results in H-mode plasmas.

Original languageEnglish (US)
Pages (from-to)99-104
Number of pages6
JournalNuclear Materials and Energy
Volume18
DOIs
StatePublished - Jan 2019

Fingerprint

liquid lithium
Limiters
Lithium
Fusion reactions
lithium
fusion
Liquids
electromagnetic pumps
Experiments
distributors
Plasmas
healing
Electromagnetic pumps
accumulators
flow velocity
damage
magnetic permeability
neutrons
heat
life (durability)

Keywords

  • EAST
  • Limiter
  • Lithium
  • Plasma facing component

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science (miscellaneous)
  • Nuclear Energy and Engineering

Cite this

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title = "Experiments of continuously and stably flowing lithium limiter in EAST towards a solution for the power exhaust of future fusion devices",
abstract = "Liquid lithium (Li) can partly ameliorate lifetime and power-exhaust issues of plasma facing components (PFCs) by enabling a self-healing, self-replenishing surface with a reduced susceptibility to neutron damage in future fusion devices. To assess operational stability and heat-exhaust capability under tokamak exposure, two generations of continuously flowing liquid Li (FLiLi) limiters on the concept of a thin flowing Li film have been successfully designed and tested in high performance discharges in EAST. The design uses a circulating Li layer with a thickness of <0.1 mm and a flow rate ∼2 cm 3 s −1 . In addition, the limiter employs a novel electro-magnetic pump to drive liquid Li flow from a collector at the bottom of the limiter into a distributor at its top. Free surface gravitational flow closes the loop for a continuously flowing liquid Li film on the wetted PFC. Here we summarize key FLiLi limiter development and experimental results in H-mode plasmas.",
keywords = "EAST, Limiter, Lithium, Plasma facing component",
author = "{EAST team} and Hu, {J. S.} and Zuo, {G. Z.} and R. Maingi and Z. Sun and K. Tritz and W. Xu and Yang, {Q. X.} and Daniel Andruczyk and M. Huang and Meng, {X. C.} and Gong, {X. Z.} and Ruzic, {David N} and Ni, {M. J.} and Wan, {B. N.} and Li, {J. G.}",
year = "2019",
month = "1",
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language = "English (US)",
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pages = "99--104",
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T1 - Experiments of continuously and stably flowing lithium limiter in EAST towards a solution for the power exhaust of future fusion devices

AU - EAST team

AU - Hu, J. S.

AU - Zuo, G. Z.

AU - Maingi, R.

AU - Sun, Z.

AU - Tritz, K.

AU - Xu, W.

AU - Yang, Q. X.

AU - Andruczyk, Daniel

AU - Huang, M.

AU - Meng, X. C.

AU - Gong, X. Z.

AU - Ruzic, David N

AU - Ni, M. J.

AU - Wan, B. N.

AU - Li, J. G.

PY - 2019/1

Y1 - 2019/1

N2 - Liquid lithium (Li) can partly ameliorate lifetime and power-exhaust issues of plasma facing components (PFCs) by enabling a self-healing, self-replenishing surface with a reduced susceptibility to neutron damage in future fusion devices. To assess operational stability and heat-exhaust capability under tokamak exposure, two generations of continuously flowing liquid Li (FLiLi) limiters on the concept of a thin flowing Li film have been successfully designed and tested in high performance discharges in EAST. The design uses a circulating Li layer with a thickness of <0.1 mm and a flow rate ∼2 cm 3 s −1 . In addition, the limiter employs a novel electro-magnetic pump to drive liquid Li flow from a collector at the bottom of the limiter into a distributor at its top. Free surface gravitational flow closes the loop for a continuously flowing liquid Li film on the wetted PFC. Here we summarize key FLiLi limiter development and experimental results in H-mode plasmas.

AB - Liquid lithium (Li) can partly ameliorate lifetime and power-exhaust issues of plasma facing components (PFCs) by enabling a self-healing, self-replenishing surface with a reduced susceptibility to neutron damage in future fusion devices. To assess operational stability and heat-exhaust capability under tokamak exposure, two generations of continuously flowing liquid Li (FLiLi) limiters on the concept of a thin flowing Li film have been successfully designed and tested in high performance discharges in EAST. The design uses a circulating Li layer with a thickness of <0.1 mm and a flow rate ∼2 cm 3 s −1 . In addition, the limiter employs a novel electro-magnetic pump to drive liquid Li flow from a collector at the bottom of the limiter into a distributor at its top. Free surface gravitational flow closes the loop for a continuously flowing liquid Li film on the wetted PFC. Here we summarize key FLiLi limiter development and experimental results in H-mode plasmas.

KW - EAST

KW - Limiter

KW - Lithium

KW - Plasma facing component

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