Results 11 to 20 of about 2,229 (260)

Suppressing magnetic island growth by resonant magnetic perturbation [PDF]

Nuclear Fusion, 2018
The effect of externally applied resonant magnetic perturbations (RMPs) on the growth of magnetic islands is investigated based on two-fluid equations. It is found that if the local bi-normal electron fluid velocity at the resonant surface is sufficiently large, static RMPs of the same helicity and of moderate amplitude can suppress the growth of ...
Yu, Q., Günter, S., Lackner, K.
openaire   +2 more sources

Plasma response to externally applied resonant magnetic perturbations [PDF]

Nuclear Fusion, 2011
Based on recent finding that applied resonant magnetic perturbation (RMP) can either increase or decrease the local electron density gradient around the resonant surface (Yu and Günter 2009 Nucl. Fusion 49 062001), the plasma response to the RMP of a single helicity is studied numerically by further taking into account the ...
Yu, Q., Günter, S.
openaire   +4 more sources

Suppression of Runaway Electrons by Resonant Magnetic Perturbations in TEXTOR Disruptions [PDF]

Physical Review Letters, 2008
The generation of runaway electrons in the international fusion experiment ITER disruptions can lead to severe damage at plasma facing components. Massive gas injection might inhibit the generation process, but the amount of gas needed can affect, e.g., vacuum systems.
Lehnen, M., Bozhenkov, S. A., Abdullaev, S. S., TEXTOR Team, Jakubowski, M. W.   +4 more
openaire   +5 more sources

Transition in particle transport under resonant magnetic perturbations in a tokamak

Nuclear Fusion, 2023
Nonlinear 3D MHD simulations and validations reveal that the hybrid particle-MHD transport is a key process for driving the pump-out in the presence of Resonant Magnetic Perturbations (RMPs) in the KSTAR tokamak.
S.K. Kim, N.C. Logan, M. Becoulet, M. Hoelzl, Q. Hu, G.T.A. Huijsmans, S.J.P. Pamela, Q. Yu, S.M. Yang, C. Paz-soldan, E. Kolemen, J.-K. Park   +11 more
doaj   +1 more source

Plasma response impact on RMP divertor footprint modeling for KSTAR

Nuclear Materials and Energy, 2023
The striation pattern of heat loads on the divertor targets is determined by the plasma response to external resonant magnetic perturbations (RMPs) applied for suppression of edge localized modes (ELMs).
H. Frerichs, J. Van Blarcum, S.M. Yang, J-K. Park, N.C. Logan, Y. Feng, O. Schmitz   +6 more
doaj   +1 more source

Gas puff imaging measurements during resonant magnetic perturbations on the HL-2A tokamak

Nuclear Fusion, 2023
The gas puff imaging diagnostic is used for the investigation of the poloidal flow and turbulent fluctuations at the plasma edge and scrape-off layer (SOL) on the HL-2A tokamak.
J.B. Yuan, M. Xu, Y. Yu, B.D Yuan, L. Nie, Z.H. Wang, T.F. Sun, T. Wu, R. Ke, T. Long, S.B. Gong, X.Q. Ji, J.Q. Li, HL-2A team   +13 more
doaj   +1 more source

Access to stable, high pressure tokamak pedestals using local electron cyclotron current drive

Nuclear Fusion, 2023
Experiments on the DIII-D tokamak demonstrate that edge localized mode (ELM) stability can be manipulated using localized electron cyclotron current drive (ECCD) in conjunction with resonant magnetic perturbations (RMPs).
N.C. Logan, B.C. Lyons, M. Knolker, Q. Hu, T. Cote, P. Snyder   +5 more
doaj   +1 more source

Impact of resonant magnetic perturbations on the L-H transition on MAST [PDF]

Plasma Physics and Controlled Fusion, 2015
23 pages, 7 figures. This is an author-created, un-copyedited version of an article submitted for publication in Plasma Physics and Controlled Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from ...
Scannell, R., Kirk, A., Carr, M., Hawke, J., Henderson, S. S., O'Gorman, T., Patel, A., Shaw, A., Thornton, A., Team, the MAST   +9 more
openaire   +4 more sources

Mechanism of Edge Localized Mode Mitigation by Resonant Magnetic Perturbations [PDF]

Physical Review Letters, 2014
A possible mechanism of edge localized modes (ELMs) mitigation by resonant magnetic perturbations (RMPs) is proposed based on the results of nonlinear resistive magnetohydrodynamic modeling using the jorek code, realistic JET-like plasma parameters and an RMP spectrum of JET error-field correction coils (EFCC) with a main toroidal number n=2 were used ...
Becoulet, Marina, Orain, F., Huijsmans, G. T. A., Pamela, S., Cahyna, P., Hoelzl, M., Garbet, X., Franck, E., Sonnendrücker, E., Dif-Pradalier, Guilhem, Passeron, C., Latu, G., Morales, J., Nardon, E., Fil, Alexandre, Nkonga, B., Ratnani, A., Grandgirard, V.   +17 more
openaire   +4 more sources

Effect of resonant magnetic perturbations including toroidal sidebands on magnetic footprints and fast ion losses in HL-2M

Nuclear Fusion, 2023
Externally applied resonant magnetic perturbations (RMPs), generated by magnetic coils located outside the plasma (referred to as RMP coils), provide an effective way to control the edge localized mode (ELM) in tokamak devices. Due to the discrete nature
G.Z. Hao, G.Q. Dong, Y.Q. Liu, Y.H. Xu, Y.F. Zhao, S. Wang, H.D. He, M. Xue, Z.J. Li, J.X. Li, C.Y. Li, L. Wang, J.Q. Xu, W. Chen, L.J. Cai, W.L. Zhong, M. Xu, X.R. Duan   +17 more
doaj   +1 more source