Results 21 to 30 of about 81,503 (309)

Suppression of resistive interchange instability by external RMP

Nuclear Fusion, 2023
We experimentally investigate the effect of external resonant magnetic perturbation (RMP) on resistive interchange MHD instability which is typically observed in the Large Helical Device. We apply the m / n = 1/1 external RMP to discharges with the m / n
S. Ito, K.Y. Watanabe, Y. Takemura, S. Sakakibara, S. Masamune   +4 more
doaj   +1 more source

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

Impact of a resonant magnetic perturbation field on impurity radiation, divertor footprint, and core plasma transport in attached and detached plasmas in the Large Helical Device

Nuclear Fusion, 2019
The effects of resonant magnetic perturbation (RMP) field on impurity radiation, divertor footprint distribution, and core plasma transport are investigated in the detachment discharges of the Large Helical Device (LHD).

semanticscholar   +1 more source

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

Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Nuclear Fusion, 2023
The spectrum effects on toroidal rotation braking, induced by n  = 1 resonant magnetic perturbations (RMPs) in the discharges with $q_{95} = 4.1$ and $q_{95} = 5.1$ , are studied in the EAST tokamak.
H. Sheng, Y.W. Sun, X.Y. Li, H.H. Li, X.M. Wu, Y.Y. Li, S.F. Mao, Q. Ma, Y.Q. Liu, C. Ye, X.T. Yan, P.C. Xie, Q. Zang, H.H. Wang, M.N. Jia, M.Y. Ye, the EAST Team   +16 more
doaj   +1 more source

Understanding the effect resonant magnetic perturbations have on ELMs [PDF]

Plasma Physics and Controlled Fusion, 2013
All current estimations of the energy released by type I ELMs indicate that, in order to ensure an adequate lifetime of the divertor targets on ITER, a mechanism is required to decrease the amount of energy released by an ELM, or to eliminate ELMs altogether.
Kirk, A, Chapman, I T, Evans, T E, Ham, C, Harrison, J R, Huijsmans, G, Liang, Y, Liu, Y Q, Loarte, A, Suttrop, W, Thornton, A J   +10 more
openaire   +2 more sources

Optimization of 3D controlled ELM-free state with recovered global confinement for KSTAR with n = 1 resonant magnetic field perturbation

Nuclear Fusion, 2021
Mitigation of deleterious heat flux from edge-localized modes (ELMs) on fusion reactors is often attempted with 3D perturbations of the confining magnetic fields.
Sangkyeun Kim, R. Shousha, S. Hahn, A. O. Nelson, J. Wai, S. Yang, Jong-Kyu Park, R. Nazikian, N. Logan, Y. Jeon, Y. In, Jaehyun Lee, Jaewook Kim, Chanyoung Lee, Yong-Su Na, E. Kolemen   +15 more
semanticscholar   +1 more source

ELM mitigation via rotating resonant magnetic perturbations on MAST [PDF]

Journal of Nuclear Materials, 2015
The application of resonant magnetic perturbations (RMPs) produces splitting of the divertor strike point due to the interaction of the RMP field and the plasma field. The application of a rotating RMP field causes the strike point splitting to rotate, distributing the particle and heat flux evenly over the divertor.
Thornton, A. J., Kirk, A., Cahyna, P., Chapman, I. T., Fishpool, G., Harrison, J. R., Liu, Y. Q., Kripner, L., Peterka, M., Team, the MAST   +9 more
openaire   +2 more sources

Test of the ITER-like resonant magnetic perturbation configurations for edge-localized mode crash suppression on KSTAR

Nuclear Fusion, 2019
KSTAR has demonstrated divertor heat flux broadening during edge-localized mode (ELM) crash suppression using ITER-like three-row resonant magnetic perturbation (RMP) for the first time.
Y. In, A. Loarte, H. H. Lee, Kimin Kim, Y. Jeon, Jinseop Park, J. Ahn, G. Park, Minwoo Kim, H. Park   +9 more
semanticscholar   +1 more source

Pressure-driven amplification and penetration of resonant magnetic perturbations [PDF]

Physics of Plasmas, 2016
We show that a resonant magnetic perturbation applied to the boundary of an ideal plasma screw-pinch equilibrium with nested surfaces can penetrate inside the resonant surface and into the core. The response is significantly amplified with increasing plasma pressure.
J. Loizu, S. R. Hudson, P. Helander, S. A. Lazerson, A. Bhattacharjee   +4 more
openaire   +2 more sources