Results 261 to 270 of about 1,922,886 (290)

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

Influence of resonant magnetic perturbations on plasma edge turbulence

Physics of Plasmas, 1997
This work reports alterations on plasma-edge equilibrium profiles and on edge turbulence, and anomalous transport induced by resonant perturbing magnetic fields in the TBR (Brazilian Tokamak) tokamak [J. Fusion Energy 12, 295 (1993)]. Thus, these perturbations have reduced the equilibrium parameters and the spectral power of the fluctuations and ...
R. M. Castro, M. V. A. P. Heller, I. L. Caldas, Z. A. Brası́lio, R. P. da Silva, I. C. Nascimento   +5 more
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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
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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
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Control of 3D equilibria with resonant magnetic perturbations in MST

Plasma Physics and Controlled Fusion, 2015
To aid in diagnosis of 3D equilibria in the Madison Symmetric Torus, it has become necessary to control the orientation of the equilibria. In reversed field pinch experiments a transition to a 3D equilibrium is common with sufficiently large plasma current (and Lundquist number).
S Munaretto, B E Chapman, D J Holly, M D Nornberg, R J Norval, D J Den Hartog, J A Goetz, K J McCollam   +7 more
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Magnetic Field Structure Induced by Resonant Magnetic Perturbations in Tokamaks

2013
In this chapter we consider essential features of the structure of magnetic field in tokamaks in the presence of the externally applied resonant magnetic perturbations (RMPs).
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Penetration of resonant magnetic perturbations in turbulent edge plasmas

Nuclear Fusion, 2014
Comprehension of the interactions between tokamak edge plasmas and externally induced resonant magnetic perturbations (RMPs) is an important step in the understanding of the control of edge-localized modes by these RMPs. Such control has been demonstrated experimentally, but previous theoretical investigations have revealed a possible screening of RMPs
A. Monnier, G. Fuhr, P. Beyer, F.A. Marcus, S. Benkadda, X. Garbet   +5 more
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Influence of resonant magnetic perturbation on a rotating helical plasma

Plasma Physics and Controlled Fusion, 2012
Nonlinear stability of magnetic islands in a helical plasma with resonant magnetic perturbation (RMP) is investigated using reduced magnetohydrodynamic equations including neoclassical viscosity. Coexistence of RMP-driven islands and the resistive interchange mode is numerically simulated.
S Nishimura, S Toda, Y Narushima, M Yagi
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Influence of Resonant Magnetic Perturbations on transport barrier dynamics

AIP Conference Proceedings, 2008
Our work focuses on the effects of Resonant Magnetic Perturbations (RMPs) on ELM stabilization, since recent experiments [T. Evans et al., Phys. Rev. Lett. 92, 235003 (2004), Y. Liang et al., Phys. Rev. Lett. 98, 265004 (2007), K. Finken et al., Nucl. Fusion 47, 522–534 (2007)] demonstrated that the RMP control technique is very promising whereas much ...
M. Leconte, P. Beyer, X. Garbet, S. Benkadda, Olivier Sauter, Xavier Garbet, Elio Sindoni   +6 more
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On digital resonance estimation of a magnetically perturbed microwave cavity

IEEE Transactions on Magnetics, 1996
This paper shows a new digital frequency control system for a microwave spectrometer to investigate ferromagnetic resonance spectra at 11.5 GHz. In order to fulfil the measurement conditions, the measuring frequency and resonance frequency of the cavity must be equal.
openaire   +1 more source