Results 251 to 260 of about 81,503 (309)

Gyrokinetic study of collisional resonant magnetic perturbation (RMP)-driven plasma density and heat transport in tokamak edge plasma using a magnetohydrodynamic screened RMP field

Nuclear Fusion, 2019
The total-f gyrokinetic particle-in-cell code XGC is applied to study various aspects of collisional transport in the tokamak edge pedestal in the presence of resonant magnetic perturbations (RMPs) calculated with M3D-C1.
R. Hager, C.S. Chang, N. Ferraro, R. Nazikian   +3 more
semanticscholar   +1 more source

Modeling 3D plasma boundary corrugation and tailoring toroidal torque profiles with resonant magnetic perturbation fields in ITER

Nuclear Fusion, 2019
Plasma response to 3D resonant magnetic perturbations (RMPs), applied for the purpose of controlling type-I edge localized modes (ELMs) in ITER with the baseline ELM control coils, is computed using a toroidal, resistive, full magneto-hydrodynamic model.
L. Li, Y.Q. Liu, A. Loarte, S. Pinches, A. Polevoi, Y. Liang, F. Zhong   +6 more
semanticscholar   +1 more source

Interaction between resonant magnetic perturbation and the rotating magnetic island

Physics of Plasmas, 1994
Nonlinear interaction between an external static resonant magnetic perturbation (RMP) and the corresponding rotating saturated magnetic island in tokamak plasma has been numerically simulated. The influence of flow shear driven by this nonlinear interaction is considered.
Wenjin Mao, Maoquan Wang
openaire   +1 more source

Magnetic field topology modeling under resonant magnetic perturbations on EAST

Plasma Science and Technology, 2019
In order to understand the mechanism by which the resonant magnetic perturbation (RMP) mitigates or suppresses the edge-localized mode (ELM), the topological study of the edge magnetic field in ELM mitigation or suppression phase is a critical issue.
Jie HUANG, Yasuhiro SUZUKI, Yunfeng LIANG, Manni JIA, Youwen SUN, Nan CHU, Jichan XU, Muquan WU   +7 more
openaire   +1 more source

Edge localized modes control by resonant magnetic perturbations

Journal of Nuclear Materials, 2007
A number of designs for external or in-vessel coils generating Resonant Magnetic Perturbations (RMPs) for type I ELMs control in ITER are analyzed. The RMPs generated by the I-coils in the successful DIII-D ELMs control experiments are taken as a reference. The three ITER characteristic scenarios (H-mode, hybrid and steady-state) are studied.
E. Nardon, M. Bécoulet, G. Huysmans, O. Czarny, P.R. Thomas, M. Lipa, R.A. Moyer, T.E. Evans, G. Federici, Y. Gribov, A. Polevoi, G. Saibene, A. Portone, A. Loarte   +13 more
openaire   +1 more source

Direct evidence of E × B flow changes at the onset of resonant magnetic perturbation-driven edge-localized mode crash suppression

Nuclear Fusion, 2019
The bifurcation of perpendicular mode velocity near the pedestal top () at the onset of RMP-driven edge-localized mode (ELM)-crash suppression has been directly measured by using an electron cyclotron emission imaging diagnostic on KSTAR. The ELM crashes
Jaehyun Lee, Y. Jeon, Y. In, G. Park, G. Yun, W. Lee, M. Kim, J.H. Lee, W. Ko, H. Park   +9 more
semanticscholar   +1 more source

Resonant magnetic perturbation effect on tearing mode dynamics

Nuclear Fusion, 2010
The effect of a resonant magnetic perturbation (RMP) on the tearing mode (TM) dynamics is experimentally studied in the EXTRAP T2R device. EXTRAP T2R is equipped with a set of sensor coils and active coils connected by a digital controller allowing a feedback control of the magnetic instabilities.
L. Frassinetti, K.E.J. Olofsson, P.R. Brunsell, J.R. Drake   +3 more
openaire   +1 more source

Shielding of resonant magnetic perturbations by rotation

Physics of Plasmas, 1996
Magnetic perturbations that drive islands are shielded from a rotating plasma by either a torque limit or an equilibrium limit. The physics of the shielding is given in a simple slab model along with the mechanism by which the shielding currents are maintained.
openaire   +2 more sources

Nuclear magnetic resonance microscopy of single neurons under hypotonic perturbation

American Journal of Physiology-Cell Physiology, 1996
Nuclear magnetic resonance (NMR) characteristics of water in perfused single neurons undergoing a 20% hypotonic perturbation were examined quantitatively using NMR microscopy. The transverse relaxation times (T2) in the cytoplasm and nucleus increased by 24.0 +/- 8.5% (average +/- SE, n = 8) and 29.7 +/- 5.3% (n = 6), respectively, whereas the ...
E W, Hsu, N R, Aiken, S J, Blackband
openaire   +2 more sources

ELM suppression by resonant magnetic perturbations at DIII-D

2009 23rd IEEE/NPSS Symposium on Fusion Engineering, 2009
Edge localized mode (ELM) suppression by resonant magnetic perturbations (RMPs) is being studied at DIII-D with ITER-similar plasma shapes and edge collisionalities. Suppression at low collisionality correlates with overlap of vacuum magnetic field islands in a quantified edge layer at moderate q.
M.J. Schaffer, T.E. Evans, R.A. Moyer, M.E. Fenstermacher   +3 more
openaire   +1 more source