Magnetic Topology Changes Induced by Lower Hybrid Waves and their Profound Effect on Edge-Localized Modes in the EAST Tokamak

被引：122

作者：

Liang, Y. ^{[1
]}

Gong, X. Z. ^{[2
]}

Gan, K. F. ^{[2
]}

Gauthier, E. ^{[3
]}

Wang, L. ^{[2
]}

Rack, M. ^{[1
]}

Wang, Y. M. ^{[2
]}

Zeng, L. ^{[1
,2
]}

Denner, P. ^{[1
]}

Wingen, A. ^{[4
]}

Lv, B. ^{[2
]}

Ding, B. J. ^{[2
]}

Chen, R. ^{[2
]}

Hu, L. Q. ^{[2
]}

Hu, J. S. ^{[2
]}

Liu, F. K. ^{[2
]}

Jie, Y. X. ^{[2
]}

Pearson, J. ^{[1
]}

Qian, J. P. ^{[2
]}

Shan, J. F. ^{[2
]}

Shen, B. ^{[2
]}

Shi, T. H. ^{[2
]}

Sun, Y. ^{[2
]}

Wang, F. D. ^{[2
]}

Wang, H. Q. ^{[2
]}

Wang, M. ^{[2
]}

Wu, Z. W. ^{[2
]}

Zhang, S. B. ^{[2
]}

Zhang, T. ^{[2
]}

Zhang, X. J. ^{[2
]}

Yan, N. ^{[2
]}

Xu, G. S. ^{[2
]}

Guo, H. Y. ^{[2
]}

Wan, B. N. ^{[2
]}

Li, J. G. ^{[2
]}

机构：

[1] Forschungszentrum Julich, Assoc EURATOM FZ Julich, Inst Energie & Klimaforsch Plasmaphys, Trilateral Euregio Cluster, D-52425 Julich, Germany

[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[3] CEA, IRFM, F-13108 St Paul Les Durance, France

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.110.235002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Strong mitigation of edge-localized modes has been observed on Experimental Advanced Superconducting Tokamak, when lower hybrid waves (LHWs) are applied to H-mode plasmas with ion cyclotron resonant heating. This has been demonstrated to be due to the formation of helical current filaments flowing along field lines in the scrape-off layer induced by LHW. This leads to the splitting of the outer divertor strike points during LHWs similar to previous observations with resonant magnetic perturbations. The change in the magnetic topology has been qualitatively modeled by considering helical current filaments in a field-line-tracing code.

引用

页数：5

共 16 条

[1] ELM destabilization by externally applied non-axisymmetric magnetic perturbations in NSTX [J].

Canik, J. M. ;

Maingi, R. ;

Evans, T. E. ;

Bell, R. E. ;

Gerhardt, S. P. ;

Kugel, H. W. ;

LeBlanc, B. P. ;

Manickam, J. ;

Menard, J. E. ;

Osborne, T. H. ;

Park, J. -K. ;

Paul, S. ;

Snyder, P. B. ;

Sabbagh, S. A. ;

Unterberg, E. A. .

NUCLEAR FUSION, 2010, 50 (03)

[2] Edge-localized modes - physics and theory [J].

Connor, JW .

PLASMA PHYSICS AND CONTROLLED FUSION, 1998, 40 (05) :531-542

[3] Investigation of lower hybrid wave coupling and current drive experiments at different configurations in experimental advanced superconducting tokamak [J].

Ding, B. J. ;

Qin, Y. L. ;

Li, W. K. ;

Li, M. H. ;

Kong, E. H. ;

Zhang, L. ;

Ekedahl, A. ;

Peysson, Y. ;

Decker, J. ;

Wang, M. ;

Xu, H. D. ;

Hu, H. C. ;

Xu, G. S. ;

Shan, J. F. ;

Liu, F. K. ;

Zhao, Y. P. ;

Wan, B. N. ;

Li, J. G. .

PHYSICS OF PLASMAS, 2011, 18 (08)

[4] Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas [J].

Evans, Todd E. ;

Moyer, Richard A. ;

Burrell, Keith H. ;

Fenstermacher, Max E. ;

Joseph, Ilon ;

Leonard, Anthony W. ;

Osborne, Thomas H. ;

Porter, Gary D. ;

Schaffer, Michael J. ;

Snyder, Philip B. ;

Thomas, Paul R. ;

Watkins, Jonathan G. ;

West, William P. .

NATURE PHYSICS, 2006, 2 (06) :419-423

[5] Strike point splitting in the heat and particle flux profiles compared with the edge magnetic topology in a n=2 resonant magnetic perturbation field at JET [J].

Harting, D. M. ;

Liang, Y. ;

Jachmich, S. ;

Koslowski, R. ;

Arnoux, G. ;

Devaux, S. ;

Eich, T. ;

Nardon, E. ;

Reiter, D. ;

Thomsen, H. .

NUCLEAR FUSION, 2012, 52 (05)

[6] Resonant magnetic perturbation experiments on MAST using external and internal coils for ELM control [J].

Kirk, A. ;

Nardon, E. ;

Akers, R. ;

Becoulet, M. ;

De Temmerman, G. ;

Dudson, B. ;

Hnat, B. ;

Liu, Y. Q. ;

Martin, R. ;

Tamain, P. ;

Taylor, D. .

NUCLEAR FUSION, 2010, 50 (03)

[7] Recent progress in RF heating and long-pulse experiments on EAST [J].

Li, Jiangang ;

Wan, Baonian .

NUCLEAR FUSION, 2011, 51 (09)

[8] Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak [J].

Liang, Y. ;

Koslowski, H. R. ;

Thomas, P. R. ;

Nardon, E. ;

Alper, B. ;

Andrew, P. ;

Andrew, Y. ;

Arnoux, G. ;

Baranov, Y. ;

Becoulet, M. ;

Beurskens, M. ;

Biewer, T. ;

Bigi, M. ;

Crombe, K. ;

De La Luna, E. ;

de Vries, P. ;

Fundamenski, W. ;

Gerasimov, S. ;

Giroud, C. ;

Gryaznevich, M. P. ;

Hawkes, N. ;

Hotchin, S. ;

Howell, D. ;

Jachmich, S. ;

Kiptily, V. ;

Moreira, L. ;

Parail, V. ;

Pinches, S. D. ;

Rachlew, E. ;

Zimmermann, O. .

PHYSICAL REVIEW LETTERS, 2007, 98 (26)

[9] Multiresonance Effect in Type-I Edge-Localized Mode Control With Low n Fields on JET [J].

Liang, Y. ;

Gimblett, C. G. ;

Browning, P. K. ;

Devoy, P. ;

Koslowski, H. R. ;

Jachmich, S. ;

Sun, Y. ;

Wiegmann, C. .

PHYSICAL REVIEW LETTERS, 2010, 105 (06)

[10] STEADY-STATE CURRENTS DRIVEN BY COLLISIONALLY DAMPED LOWER-HYBRID WAVES [J].

MCWILLIAMS, R ;

VALEO, EJ ;

MOTLEY, RW ;

HOOKE, WM ;

OLSON, L .

PHYSICAL REVIEW LETTERS, 1980, 44 (04) :245-248

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