Study of lower hybrid current drive towards long-pulse operation with high performance in EAST

B.J. Ding, M.H. Li, Y.C. Li, M. Wang, J.F. Shan, F.K. Liu, S.L. Wang, W. Wei, H.D. Xu, L.M. Zhao, H.C. Hu, H. Jia, M. Cheng, Y. Yang, L. Liu, G.S. Xu, Q. Zang, H.L. Zhao, Y. Peysson, J. DeckerM. Goniche, R. Cesario, L. Amicucci, A.A. Tuccillo, G.S. Baek, R. Parker, P.T. Bonoli, C. Yang, Y.P. Zhao, J.P. Qian, X.Z. Gong, L.Q. Hu, J.G. Li, B.N. Wan

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

High density experiments with 2.45 GHz lower hybrid current drive (LHCD) in EAST are analyzed by means of simulation and modeling, showing that parametric instabilities (PI), collisional absorption and density fluctuations in the edge region could be responsible for the low CD efficiency at high density. In addition, recent LHCD results with 4.6 GHz are presented, showing that lower hybrid wave can be coupled to plasma with low reflection coefficient, drive plasma current and modify the current profile, and heat plasma effectively. The related results between two systems (2.45 GHz and 4.6 GHz) are also compared, including CD efficiency and PI behavior.
Original languageEnglish
DOIs
Publication statusPublished - 10 Dec 2015
Externally publishedYes
Event21st Topical Conference on Radiofrequency Power in Plasmas - Lake Arrowhead, United States
Duration: 10 Dec 2015 → …

Conference

Conference21st Topical Conference on Radiofrequency Power in Plasmas
CountryUnited States
CityLake Arrowhead
Period10/12/15 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ding, B. J., Li, M. H., Li, Y. C., Wang, M., Shan, J. F., Liu, F. K., ... Wan, B. N. (2015). Study of lower hybrid current drive towards long-pulse operation with high performance in EAST. Paper presented at 21st Topical Conference on Radiofrequency Power in Plasmas, Lake Arrowhead, United States. https://doi.org/10.1063/1.4936525