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

EAST team

doi:10.1016/j.fusengdes.2020.111747

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

EAST team

Nuclear, Plasma, and Radiological Engineering

Research output: Contribution to journal › Article › peer-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 language	English (US)
Article number	111747
Journal	Fusion Engineering and Design
Volume	158
DOIs	https://doi.org/10.1016/j.fusengdes.2020.111747
State	Published - Sep 2020

Keywords

EAST
Limiter
Liquid Li
TZM alloy

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
General Materials Science
Mechanical Engineering

Online availability

10.1016/j.fusengdes.2020.111747

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

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.",

keywords = "EAST, Limiter, Liquid Li, TZM alloy",

author = "{EAST team} and Li, {C. L.} and Zuo, {G. Z.} and R. Maingi and Meng, {X. C.} and W. Xu and Z. Sun and Qian, {Y. Z.} and M. Huang and D. Andruczyk and K. Tritz and Hu, {J. S.}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = sep,

doi = "10.1016/j.fusengdes.2020.111747",

language = "English (US)",

volume = "158",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Development of a new TZM substrate flowing liquid lithium limiter for high performance plasma discharge in EAST

AU - EAST team

AU - Li, C. L.

AU - Zuo, G. Z.

AU - Maingi, R.

AU - Meng, X. C.

AU - Xu, W.

AU - Sun, Z.

AU - Qian, Y. Z.

AU - Huang, M.

AU - Andruczyk, D.

AU - Tritz, K.

AU - Hu, J. S.

PY - 2020/9

Y1 - 2020/9

N2 - 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.

AB - 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.

KW - EAST

KW - Limiter

KW - Liquid Li

KW - TZM alloy

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DO - 10.1016/j.fusengdes.2020.111747

M3 - Article

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SN - 0920-3796

VL - 158

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

M1 - 111747

ER -

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

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Keywords

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