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

doi:10.1063/1.4997806

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

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Abstract

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.

Original language	English (US)
Article number	123506
Journal	Review of Scientific Instruments
Volume	88
Issue number	12
DOIs	https://doi.org/10.1063/1.4997806
State	Published - Dec 1 2017

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.4997806

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Zuo, G. Z., Hu, J. S., Maingi, R., Yang, Q. X., Sun, Z., Huang, M., Chen, Y., Yuan, X. L., Meng, X. C., Xu, W., Gentile, C., Carpe, A., Diallo, A., Lunsford, R., Mansfield, D., Osborne, T., Tritz, K., & Li, J. G. (2017). Upgraded flowing liquid lithium limiter for improving Li coverage uniformity and erosion resistance in EAST device. Review of Scientific Instruments, 88(12), Article 123506. https://doi.org/10.1063/1.4997806

@article{516f3e81baf44a36b90f81def8eb053f,

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

abstract = "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.",

author = "Zuo, \{G. Z.\} and Hu, \{J. S.\} and R. Maingi and Yang, \{Q. X.\} and Z. Sun and M. Huang and Y. Chen and Yuan, \{X. L.\} and Meng, \{X. C.\} and W. Xu and C. Gentile and A. Carpe and A. Diallo and R. Lunsford and D. Mansfield and T. Osborne and K. Tritz and Li, \{J. G.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Author(s).",

year = "2017",

month = dec,

day = "1",

doi = "10.1063/1.4997806",

language = "English (US)",

volume = "88",

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Zuo, GZ, Hu, JS, Maingi, R, Yang, QX, Sun, Z, Huang, M, Chen, Y, Yuan, XL, Meng, XC, Xu, W, Gentile, C, Carpe, A, Diallo, A , Lunsford, R, Mansfield, D, Osborne, T, Tritz, K & Li, JG 2017, 'Upgraded flowing liquid lithium limiter for improving Li coverage uniformity and erosion resistance in EAST device', Review of Scientific Instruments, vol. 88, no. 12, 123506. https://doi.org/10.1063/1.4997806

TY - JOUR

T1 - Upgraded flowing liquid lithium limiter for improving Li coverage uniformity and erosion resistance in EAST device

AU - Zuo, G. Z.

AU - Hu, J. S.

AU - Maingi, R.

AU - Yang, Q. X.

AU - Sun, Z.

AU - Huang, M.

AU - Chen, Y.

AU - Yuan, X. L.

AU - Meng, X. C.

AU - Xu, W.

AU - Gentile, C.

AU - Carpe, A.

AU - Diallo, A.

AU - Lunsford, R.

AU - Mansfield, D.

AU - Osborne, T.

AU - Tritz, K.

AU - Li, J. G.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - 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.

AB - 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.

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SN - 0034-6748

VL - 88

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 12

M1 - 123506

ER -

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

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