Výsledky vyhledávání - "Lower hybrid current drive"

Akademický článek

Numerical simulation study of lower hybrid wave scattering full-wave solution in scrap-off layer

Autor: YANG Jinghe, DING Bojiang, WU Chenbin, LI Miaohui, WANG Mao, LIU Liang, YAN Guanghou

Publikováno v: He jishu, Vol 47, Iss 5, Pp 050016-050016 (2024)

BackgroundLower hybrid current drive (LHCD) is one of the main auxiliary heating and current driving methods for Tokamak, and studies have shown that the boundary parasitics effect of lower hybrid (LH) wave in scrap-off layer (SOL) significantly decr

Externí odkaz: https://doaj.org/article/91f913a2cddb45688d8aa609b85ecdd3

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Akademický článek

Improvement of lower hybrid current drive systems for high-power and long-pulse operation on EAST

Autor: M. Wang, L. Liu, L.M. Zhao, M.H. Li, W.D. Ma, H.C. Hu, Z.G. Wu, J.Q. Feng, Y. Yang, L. Zhu, M. Chen, T.A. Zhou, H. Jia, J. Zhang, L. Cao, L. Zhang, R.R. Liang, B.J. Ding, X.J. Zhang, J.F. Shan, F.K. Liu, A. Ekedahl, M. Goniche, J. Hillairet, L. Delpech

Publikováno v: Nuclear Engineering and Technology, Vol 54, Iss 11, Pp 4102-4110 (2022)

Aiming at high-power and long-pulse operation up to 1000 s, some improvements have been made for both 2.45 GHz and 4.6 GHz lower hybrid (LH) systems during the recent 5 years. At first, the guard limiters of the LH antennas with graphite tiles were u

Externí odkaz: https://doaj.org/article/e38aeea4a7844a59a59e09cc145a908a

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Akademický článek

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Akademický článek

The onset of parametric decay of lower hybrid waves during lower hybrid current drive experiments on Experimental Advanced Superconducting Tokamak

Autor: Gen Li, Taotao Zhou, Miaohui Li, Bojiang Ding, Chunyun Gan, Ning Yan, Nong Xiang

Publikováno v: Nuclear Fusion, Vol 64, Iss 12, p 126008 (2024)

An ad hoc calculation is presented to interpret the growth of sideband waves during lower hybrid current drive (LHCD) experiments on Experimental Advanced Superconducting Tokamak (EAST). We adopt the solution of the non-linear dispersion relation for

Externí odkaz: https://doaj.org/article/8164d0ce9e404b528da46b0c3c376637

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Akademický článek

Determination of the mean energy of fast electron losses and anisotropies through thick-target emission on WEST

Autor: T. Barbui, L.F. Delgado-Aparicio, B. Stratton, O. Chellaï, R. Dumont, K.W. Hill, N.A. Pablant, Y. Savoye-Peysson, the WEST Team

Publikováno v: Nuclear Fusion, Vol 64, Iss 5, p 056009 (2024)

A new method to obtain the mean energy of fast electron losses in fusion plasmas using a versatile multi-energy hard x-ray (HXR) detector is presented. The method is based on measuring the thick-target emission of tungsten in the divertor region prod

Externí odkaz: https://doaj.org/article/41a56b976d984a65a313442bde627fc1

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Akademický článek

First realization of LHW–plasma coupling feedback control for long-pulse operation in EAST

Autor: B.J. Ding, G.H. Yan, Q.P. Yuan, Y.C. Li, C.B. Wu, J.H. Wu, B. Cao, J.H. Yang, M.H. Li, M. Wang, W.D. Ma, Z.G. Wu, W. Sun, L. Liu, L.M. Zhao, H.C. Hu, J.F. Shan, F.K. Liu, J.P. Qian, X.Z. Gong, the EAST Team

Publikováno v: Nuclear Fusion, Vol 64, Iss 7, p 074003 (2024)

To sustain good lower hybrid wave (LHW)–plasma coupling for long-pulse plasma operation, for the first time, coupling feedback control is designed and realized in EAST using a proportion integration differentiation method by choosing the reflection

Externí odkaz: https://doaj.org/article/4d11b5b6376f445481b8864bf46d778d

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Akademický článek

Experimental investigation of PDI bifurcation of lower hybrid waves during electron density ramp-up in EAST

Autor: G.H. Yan, B.J. Ding, C.B. Wu, M.H. Li, S.G. Baek, F. Napoli, T.T. Zhou, K.N. Geng, N. Yan, M. Wang, X.J. Zhang, H.D. Xu, J.H. Yang, W.Q. Ma

Publikováno v: Nuclear Fusion, Vol 64, Iss 8, p 086018 (2024)

The effect of parametric decay instability (PDI) on the current drive efficiency of 4.6 GHz lower hybrid (LH) waves in EAST is investigated experimentally, showing the PDI channel bifurcation of LH waves for the first time in EAST. First, experiments

Externí odkaz: https://doaj.org/article/39626736338240e480d04943e4d98515

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Akademický článek

Studies of the outer-off-midplane lower hybrid wave launch scenario for plasma start-up on the TST-2 spherical tokamak

Autor: N. Tsujii, A. Ejiri, Y. Ko, Y. Peng, K. Iwasaki, Y. Lin, K. Shinohara, O. Watanabe, S. Jang, T. Hidano, Y. Shirasawa, Y. Tian, F. Adachi, C.P. Moeller

Publikováno v: Nuclear Fusion, Vol 64, Iss 8, p 086017 (2024)

Establishment of an efficient central solenoid (CS) free tokamak plasma start-up method may lead to an economical fusion reactor. CS-free start-up using lower hybrid (LH) waves has been studied on the TST-2 spherical tokamak. Plasma current of about

Externí odkaz: https://doaj.org/article/76c8a253dcac4a72b39bb3331b5d3906

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Akademický článek

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