Improved lower hybrid current drive efficiency with IBW heating in the HT-7 tokamak

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Abstract

Lower hybrid current drive (LHCD) efficiency in the HT-7 tokamak is observed to increase about 30% with ion Bernstein wave (IBW) heating. The current drive efficiency as high as 0.48 × 1019A m-2W-1has been reached in HT-7 thanks to an LHCD/IBW synergy. The IBWs are significantly coupled to the fast electrons produced by the lower hybrid waves, thus results in higher fast electron photon temperature in the combined LHCD + IBW scenario. The interaction of LHCD + IBW improved current drive efficiency. © 2007 Elsevier B.V. All rights reserved.

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Chen, Z. Y., Wan, B. N., & Shi, Y. J. (2008). Improved lower hybrid current drive efficiency with IBW heating in the HT-7 tokamak. Physics Letters, Section A: General, Atomic and Solid State Physics, 372(9), 1458–1461. https://doi.org/10.1016/j.physleta.2007.09.062

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