Current ramp-up with lower hybrid current drive in EAST

B. J. Ding; M. H. Li; N. J. Fisch; H. Qin; J. G. Li; J. R. Wilson; E. H. Kong; L. Zhang; W. Wei; Y. C. Li; M. Wang; H. D. Xu; X. Z. Gong; B. Shen; F. K. Liu; J. F. Shan

doi:10.1063/1.4773049

Current ramp-up with lower hybrid current drive in EAST

B. J. Ding, M. H. Li, N. J. Fisch, H. Qin, J. G. Li, J. R. Wilson, E. H. Kong, L. Zhang, W. Wei, Y. C. Li, M. Wang, H. D. Xu, X. Z. Gong, B. Shen, F. K. Liu, J. F. Shan

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11 Scopus citations

Abstract

More economical fusion reactors might be enabled through the cyclic operation of lower hybrid current drive. The first stage of cyclic operation would be to ramp up the plasma current with lower hybrid waves alone in low-density plasma. Such a current ramp-up was carried out successfully on the EAST tokamak. The plasma current was ramped up with a time-averaged rate of 18kA/s with lower hybrid (LH) power. The average conversion efficiency P _el/P_LH was about 3%. Over a transient phase, faster ramp-up was obtained. These experiments feature a separate measurement of the L/R time at the time of current ramp up.

Original language	English (US)
Article number	122507
Journal	Physics of Plasmas
Volume	19
Issue number	12
DOIs	https://doi.org/10.1063/1.4773049
State	Published - Dec 2012

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.4773049

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@article{0803ba051f9b430d8a37456f94532880,

title = "Current ramp-up with lower hybrid current drive in EAST",

abstract = "More economical fusion reactors might be enabled through the cyclic operation of lower hybrid current drive. The first stage of cyclic operation would be to ramp up the plasma current with lower hybrid waves alone in low-density plasma. Such a current ramp-up was carried out successfully on the EAST tokamak. The plasma current was ramped up with a time-averaged rate of 18kA/s with lower hybrid (LH) power. The average conversion efficiency P el/PLH was about 3%. Over a transient phase, faster ramp-up was obtained. These experiments feature a separate measurement of the L/R time at the time of current ramp up.",

author = "Ding, {B. J.} and Li, {M. H.} and Fisch, {N. J.} and H. Qin and Li, {J. G.} and Wilson, {J. R.} and Kong, {E. H.} and L. Zhang and W. Wei and Li, {Y. C.} and M. Wang and Xu, {H. D.} and Gong, {X. Z.} and B. Shen and Liu, {F. K.} and Shan, {J. F.}",

note = "Funding Information: This work was supported by the National Magnetic Confinement Fusion Science Program of China (Grant No. 2010GB105004), the National Natural Science Foundation of China under Grant Nos. 11175206, 10875149, and 10928509. Three of us (N. J. Fisch, H. Qin, and J. R. Wilson) are supported in part by the U.S. DOE under Grant Contract Number DE-AC02-09CH11466. ",

year = "2012",

month = dec,

doi = "10.1063/1.4773049",

language = "English (US)",

volume = "19",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "12",

}

TY - JOUR

T1 - Current ramp-up with lower hybrid current drive in EAST

AU - Ding, B. J.

AU - Li, M. H.

AU - Fisch, N. J.

AU - Qin, H.

AU - Li, J. G.

AU - Wilson, J. R.

AU - Kong, E. H.

AU - Zhang, L.

AU - Wei, W.

AU - Li, Y. C.

AU - Wang, M.

AU - Xu, H. D.

AU - Gong, X. Z.

AU - Shen, B.

AU - Liu, F. K.

AU - Shan, J. F.

N1 - Funding Information: This work was supported by the National Magnetic Confinement Fusion Science Program of China (Grant No. 2010GB105004), the National Natural Science Foundation of China under Grant Nos. 11175206, 10875149, and 10928509. Three of us (N. J. Fisch, H. Qin, and J. R. Wilson) are supported in part by the U.S. DOE under Grant Contract Number DE-AC02-09CH11466.

PY - 2012/12

Y1 - 2012/12

N2 - More economical fusion reactors might be enabled through the cyclic operation of lower hybrid current drive. The first stage of cyclic operation would be to ramp up the plasma current with lower hybrid waves alone in low-density plasma. Such a current ramp-up was carried out successfully on the EAST tokamak. The plasma current was ramped up with a time-averaged rate of 18kA/s with lower hybrid (LH) power. The average conversion efficiency P el/PLH was about 3%. Over a transient phase, faster ramp-up was obtained. These experiments feature a separate measurement of the L/R time at the time of current ramp up.

AB - More economical fusion reactors might be enabled through the cyclic operation of lower hybrid current drive. The first stage of cyclic operation would be to ramp up the plasma current with lower hybrid waves alone in low-density plasma. Such a current ramp-up was carried out successfully on the EAST tokamak. The plasma current was ramped up with a time-averaged rate of 18kA/s with lower hybrid (LH) power. The average conversion efficiency P el/PLH was about 3%. Over a transient phase, faster ramp-up was obtained. These experiments feature a separate measurement of the L/R time at the time of current ramp up.

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Current ramp-up with lower hybrid current drive in EAST

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