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Title: Improvement on the plasma performances via application of flowing lithium limiters in EAST tokamak

Abstract

Three generation of flowing liquid lithium (FLiLi) limiters have been developed and successfully tested in EAST since 2014. It was confirmed that liquid Li could be driven by an innovative in-vessel DC electromagnetic J × B pump to form a recirculating loop. The FLiLi design was continuously upgraded, resulting in improvement of the liquid Li surface coverage (>80%), elimination of surface erosion, and the increase of heat exhaust capability. Promising results are obtained during FLiLi operations, including a reduction of impurities and recycling to improve plasma confinement, and a mitigation of ELM activity in H-mode plasmas. The FLiLi limiter program has shown basic compatibility with H-mode discharges with auxiliary heating power up to 8.3 MW. These efforts will expand to flowing liquid Li PFC in high heat flux zones, e.g. near the divertor strike point in reactors.

Authors:
 [1];  [1];  [2];  [3];  [4]; ORCiD logo [5];  [1];  [4];  [6];  [7];  [8];  [1];  [1]
  1. Chinese Academy of Sciences (CAS), Hefei (China). Inst. of Plasma Physics
  2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. Chinese Academy of Sciences (CAS), Hefei (China). Inst. of Plasma Physics ; Univ. of Science and Technology of China, Hefei (China)
  4. Chinese Academy of Sciences (CAS), Hefei (China). Inst. of Plasma Physics; Shenzhen Univ. (China)
  5. Chinese Academy of Sciences (CAS), Hefei (China). Inst. of Plasma Physics ; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  6. Chinese Academy of Sciences (CAS), Hefei (China). Inst. of Plasma Physics; Univ. of Science and Technology of China, Hefei (China)
  7. Univ. of Illinois at Urbana-Champaign, IL (United States)
  8. Johns Hopkins Univ., Baltimore, MD (United States)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1619053
Grant/Contract Number:  
AC02-09CH11466; 11775261; 11625524; and 11605246; 2017YFE0301100; 2017YFA0402500
Resource Type:
Accepted Manuscript
Journal Name:
Physica Scripta
Additional Journal Information:
Journal Volume: T171; Journal ID: ISSN 0031-8949
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Zuo, G. Z., Hu, J. S., Maingi, R., Li, C. L., Meng, X. C., Sun, Z., Huang, M., Xu, W., Qian, Y. Z., Andruczyk, D., Tritz, K., Gong, X. Z., and Li, J. G.. Improvement on the plasma performances via application of flowing lithium limiters in EAST tokamak. United States: N. p., 2020. Web. https://doi.org/10.1088/1402-4896/ab3bed.
Zuo, G. Z., Hu, J. S., Maingi, R., Li, C. L., Meng, X. C., Sun, Z., Huang, M., Xu, W., Qian, Y. Z., Andruczyk, D., Tritz, K., Gong, X. Z., & Li, J. G.. Improvement on the plasma performances via application of flowing lithium limiters in EAST tokamak. United States. https://doi.org/10.1088/1402-4896/ab3bed
Zuo, G. Z., Hu, J. S., Maingi, R., Li, C. L., Meng, X. C., Sun, Z., Huang, M., Xu, W., Qian, Y. Z., Andruczyk, D., Tritz, K., Gong, X. Z., and Li, J. G.. Wed . "Improvement on the plasma performances via application of flowing lithium limiters in EAST tokamak". United States. https://doi.org/10.1088/1402-4896/ab3bed. https://www.osti.gov/servlets/purl/1619053.
@article{osti_1619053,
title = {Improvement on the plasma performances via application of flowing lithium limiters in EAST tokamak},
author = {Zuo, G. Z. and Hu, J. S. and Maingi, R. and Li, C. L. and Meng, X. C. and Sun, Z. and Huang, M. and Xu, W. and Qian, Y. Z. and Andruczyk, D. and Tritz, K. and Gong, X. Z. and Li, J. G.},
abstractNote = {Three generation of flowing liquid lithium (FLiLi) limiters have been developed and successfully tested in EAST since 2014. It was confirmed that liquid Li could be driven by an innovative in-vessel DC electromagnetic J × B pump to form a recirculating loop. The FLiLi design was continuously upgraded, resulting in improvement of the liquid Li surface coverage (>80%), elimination of surface erosion, and the increase of heat exhaust capability. Promising results are obtained during FLiLi operations, including a reduction of impurities and recycling to improve plasma confinement, and a mitigation of ELM activity in H-mode plasmas. The FLiLi limiter program has shown basic compatibility with H-mode discharges with auxiliary heating power up to 8.3 MW. These efforts will expand to flowing liquid Li PFC in high heat flux zones, e.g. near the divertor strike point in reactors.},
doi = {10.1088/1402-4896/ab3bed},
journal = {Physica Scripta},
number = ,
volume = T171,
place = {United States},
year = {2020},
month = {2}
}

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