First results of flowing liquid lithium limiter in HT-7

J. Ren, J. S. Hu, G. Z. Zuo, Z. Sun, J. G. Li, David N Ruzic, L. E. Zakharov

Research output: Contribution to journalConference article

Abstract

Two different types of flowing liquid lithium limiters were firstly installed and successfully tested in HT-7 tokamaks in 2012 and some encouraging results were obtained. Two limiters of the first type, called FLiLi limiters, used a thin lithium layer flowing under gravity. The other type had lithium-metal infused trenches (LIMIT) for thermoelectric magnetohydrodynamic drive of the liquid metal flow. The surface of one of the FLiLi limiters was coated by evaporated lithium before liquid lithium was injected by Ar pressure into a special distributor of the limiter. Then the liquid lithium could slowly move along the plasma facing guide surface of the limiter due to gravity. For LIMIT, it was found that liquid lithium could flow along the trenches as expected with a velocity of about 3.7 ± 0.5 cm s-1 driven by the electromagnetic force, which came from the interaction between the thermoelectric current and magnetic field. Use of flowing liquid lithium limiters in HT-7 resulted in reduction of particle recycling, suppression of impurity emission and improvement of the confinement.

Original languageEnglish (US)
Article number014033
JournalPhysica Scripta
VolumeT159
DOIs
StatePublished - Jan 1 2014
Event14th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2013 - Julich, Germany
Duration: May 13 2013May 17 2013

Fingerprint

liquid lithium
Limiter
Liquid
lithium
gravitation
distributors
Gravity
Metals
liquid metals
recycling
Electromagnetic Force
metals
magnetohydrodynamics
Liquid Metal
Recycling
retarding
Impurities
electromagnetism
impurities
Plasma

Keywords

  • HT-7
  • lithium
  • plasma facing component
  • tokamak

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

Cite this

Ren, J., Hu, J. S., Zuo, G. Z., Sun, Z., Li, J. G., Ruzic, D. N., & Zakharov, L. E. (2014). First results of flowing liquid lithium limiter in HT-7. Physica Scripta, T159, [014033]. https://doi.org/10.1088/0031-8949/2014/T159/014033

First results of flowing liquid lithium limiter in HT-7. / Ren, J.; Hu, J. S.; Zuo, G. Z.; Sun, Z.; Li, J. G.; Ruzic, David N; Zakharov, L. E.

In: Physica Scripta, Vol. T159, 014033, 01.01.2014.

Research output: Contribution to journalConference article

Ren, J. ; Hu, J. S. ; Zuo, G. Z. ; Sun, Z. ; Li, J. G. ; Ruzic, David N ; Zakharov, L. E. / First results of flowing liquid lithium limiter in HT-7. In: Physica Scripta. 2014 ; Vol. T159.
@article{df97f250800a4d4a952c44604b24edba,
title = "First results of flowing liquid lithium limiter in HT-7",
abstract = "Two different types of flowing liquid lithium limiters were firstly installed and successfully tested in HT-7 tokamaks in 2012 and some encouraging results were obtained. Two limiters of the first type, called FLiLi limiters, used a thin lithium layer flowing under gravity. The other type had lithium-metal infused trenches (LIMIT) for thermoelectric magnetohydrodynamic drive of the liquid metal flow. The surface of one of the FLiLi limiters was coated by evaporated lithium before liquid lithium was injected by Ar pressure into a special distributor of the limiter. Then the liquid lithium could slowly move along the plasma facing guide surface of the limiter due to gravity. For LIMIT, it was found that liquid lithium could flow along the trenches as expected with a velocity of about 3.7 ± 0.5 cm s-1 driven by the electromagnetic force, which came from the interaction between the thermoelectric current and magnetic field. Use of flowing liquid lithium limiters in HT-7 resulted in reduction of particle recycling, suppression of impurity emission and improvement of the confinement.",
keywords = "HT-7, lithium, plasma facing component, tokamak",
author = "J. Ren and Hu, {J. S.} and Zuo, {G. Z.} and Z. Sun and Li, {J. G.} and Ruzic, {David N} and Zakharov, {L. E.}",
year = "2014",
month = "1",
day = "1",
doi = "10.1088/0031-8949/2014/T159/014033",
language = "English (US)",
volume = "T159",
journal = "Physica Scripta",
issn = "0031-8949",
publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - First results of flowing liquid lithium limiter in HT-7

AU - Ren, J.

AU - Hu, J. S.

AU - Zuo, G. Z.

AU - Sun, Z.

AU - Li, J. G.

AU - Ruzic, David N

AU - Zakharov, L. E.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Two different types of flowing liquid lithium limiters were firstly installed and successfully tested in HT-7 tokamaks in 2012 and some encouraging results were obtained. Two limiters of the first type, called FLiLi limiters, used a thin lithium layer flowing under gravity. The other type had lithium-metal infused trenches (LIMIT) for thermoelectric magnetohydrodynamic drive of the liquid metal flow. The surface of one of the FLiLi limiters was coated by evaporated lithium before liquid lithium was injected by Ar pressure into a special distributor of the limiter. Then the liquid lithium could slowly move along the plasma facing guide surface of the limiter due to gravity. For LIMIT, it was found that liquid lithium could flow along the trenches as expected with a velocity of about 3.7 ± 0.5 cm s-1 driven by the electromagnetic force, which came from the interaction between the thermoelectric current and magnetic field. Use of flowing liquid lithium limiters in HT-7 resulted in reduction of particle recycling, suppression of impurity emission and improvement of the confinement.

AB - Two different types of flowing liquid lithium limiters were firstly installed and successfully tested in HT-7 tokamaks in 2012 and some encouraging results were obtained. Two limiters of the first type, called FLiLi limiters, used a thin lithium layer flowing under gravity. The other type had lithium-metal infused trenches (LIMIT) for thermoelectric magnetohydrodynamic drive of the liquid metal flow. The surface of one of the FLiLi limiters was coated by evaporated lithium before liquid lithium was injected by Ar pressure into a special distributor of the limiter. Then the liquid lithium could slowly move along the plasma facing guide surface of the limiter due to gravity. For LIMIT, it was found that liquid lithium could flow along the trenches as expected with a velocity of about 3.7 ± 0.5 cm s-1 driven by the electromagnetic force, which came from the interaction between the thermoelectric current and magnetic field. Use of flowing liquid lithium limiters in HT-7 resulted in reduction of particle recycling, suppression of impurity emission and improvement of the confinement.

KW - HT-7

KW - lithium

KW - plasma facing component

KW - tokamak

UR - http://www.scopus.com/inward/record.url?scp=84902195749&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84902195749&partnerID=8YFLogxK

U2 - 10.1088/0031-8949/2014/T159/014033

DO - 10.1088/0031-8949/2014/T159/014033

M3 - Conference article

AN - SCOPUS:84902195749

VL - T159

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

M1 - 014033

ER -