Results 151 to 160 of about 455,514 (173)

Study of in-vessel nonaxisymmetric ELM suppression coil concepts for ITER

Nuclear Fusion, 2008
Large Type-I edge-localized mode (ELM) heat pulses may limit the life of divertor targets in a burning plasma. Recent experiments show that pitch-resonant nonaxisymmetric magnetic perturbations of the plasma edge of 0.0005 or less of the main magnetic field offer a useful solution, but there is little room in the presently designed ITER for even small ...
M.J. Schaffer, J.E. Menard, M.P. Aldan, J.M. Bialek, T.E. Evans, R.A. Moyer   +5 more
exaly   +2 more sources

Advances in the physics understanding of ELM suppression using resonant magnetic perturbations in DIII-D

Nuclear Fusion, 2015
Abstract Recent experiments on DIII-D have increased confidence in the ability to suppress edge-localized modes (ELMs) using edge-resonant magnetic perturbations (RMPs) in ITER, including an improved physics basis for the edge response to RMPs as well as expansion of RMP ELM suppression to more ITER-like conditions.
Raffi Nazikian, Andreas Wingen, Wolfgang Suttrop   +2 more
exaly   +4 more sources

Results from radiating divertor experiments with RMP ELM suppression and mitigation

Nuclear Fusion, 2011
The range in density and collisionality for which resonant magnetic perturbations (RMPs) are effective in suppressing edge-localized modes (ELMs) in the presence of a radiating divertor was found to be modest for representative H-mode plasmas in DIII-D.
T.W. Petrie, T.E. Evans, N.H. Brooks, M.E. Fenstermacher, J.R. Ferron, C.T. Holcomb, B. Hudson, A.W. Hyatt, T.C. Luce, C.J. Lasnier, S. Mordijck, R.A. Moyer, T.H. Osborne, P.A. Politzer, M.E. Rensink, M.J. Schaffer, P.B. Snyder, J.G. Watkins   +17 more
openaire   +2 more sources

ELM Suppression and Flow Damping with N=1 RMP Fields in Tokamaks Plasmas [PDF]

, 2021
Controlling large edge localized modes (ELMs) is critical for tokamaks operating in H-mode, due to potentially severe consequences on material damages caused by ELM bursts in future large scale devices such as ITER [1]. Resonant magnetic perturbation (RMP) has been extensively applied to mitigate or suppress ELMs [2].
Zhang N, Yang Z, Liu Y, Liu Y, Sun T, Piovesan P, Igochine V, Yu D, Wang S, Dong G, Ke R, Gao J, Deng W, Wu N, Yang Q, Xu M, Duan X   +16 more
openaire   +4 more sources

ELM suppression by resonant magnetic perturbation in high-performance, stationary plasmas

Nuclear Fusion, 2010
The method of resonant magnetic perturbation (RMP) has been shown to suppress edge-localized modes (ELMs) in the high-performance, stationary (or ‘hybrid’) scenario in the DIII-D tokamak. Calculations of stability to peeling–ballooning (P–B) modes are shown to be consistent with the observed suppression of type-I ELMs, while the ELM suppression ...
B. Hudson, T.E. Evans, T.H. Osborne, C.C. Petty, P.B. Snyder, E.A. Unterberg   +5 more
exaly   +2 more sources

The role of radial particle pinches in ELM suppression by resonant magnetic perturbations

Nuclear Fusion, 2011
The force balance in the plasma edge in a matched pair of DIII-D (Luxon 2002 Nucl. Fusion 42 6149) tokamak discharges with and without resonant magnetic perturbations (RMPs) is evaluated in order to investigate the effects on particle transport of RMP applied for the purpose of suppressing edge-localized modes (ELMs). Experimental
W.M. Stacey, T.E. Evans
openaire   +1 more source

Enhancement of edge turbulence concomitant with ELM suppression during boron powder injection in EAST

Physics of Plasmas, 2021
A reproducible, quasi-stationary edge localized mode (ELM)-suppressed scenario was obtained over a wide range of plasma parameters by continuous injection of boron (B) powder into an upper-single null discharge in the experimental advanced superconducting tokamak [Sun et al., Nucl. Fusion 61, 014002 (2021)].
Z. Sun, R. Maingi, A. Diallo, W. Xu, Y. Z. Qian, K. Tritz, Y. Ye, C. L. Li, Z. Xu, Y. F. Wang, K. X. Ye, A. Bortolon, A. Nagy, L. Zhang, Y. M. Duan, Z. Y. Lu, H. Q. Wang, T. H. Shi, H. L. Zhao, W. Gao, J. C. Xu, R. Chen, M. Huang, G. Z. Zuo, G. S. Xu, X. Z. Gong, J. S. Hu   +26 more
openaire   +1 more source

Suppression Of Bacterial Leaf Scorch Symptoms In American Elm Through Oxytetracycline Microinjection

Arboriculture & Urban Forestry, 1985
AbstractAmerican elms with bacterial-associated leaf scorch (ELS) were injected with oxytetracycline (OTC) to determine if the antibiotic would cause a delay in symptom onset or a remission of symptoms. Degree of symptom expression and presence of fastidious, xylem-inhabiting bacteria were determined in August 1982.
S.J. Kostka, T.A. Tattar, J.L. Sherald
openaire   +1 more source

Modelling of pedestal transport during ELM suppression by external magnetic field perturbations

Nuclear Fusion, 2008
Particle and energy transport in the edge transport barrier is analysed in the presence of magnetic field perturbations from external resonant coils successfully used recently for the mitigation of type I edge localized modes (ELMs). The modification of transport due to charged particle and heat flows along perturbed field lines in a small region near ...
M.Z. Tokar, T.E. Evans, A. Gupta, D. Kalupin, A. Nicolai, R. Singh, B. Unterberg   +6 more
openaire   +1 more source

Numerical analysis of the effects of normalized plasma pressure on RMP ELM suppression in DIII-D

Nuclear Fusion, 2010
The effect of normalized plasma pressure as characterized by normalized pressure parameter (βN) on the suppression of edge localized modes (ELMs) using resonant magnetic perturbations (RMPs) is studied in low-collisionality (ν* ⩽ 0.2) H-mode plasmas with low-triangularity (⟨δ⟩ = 0.25) and ITER similar shapes (⟨δ⟩ = 0.51).
D.M. Orlov, R.A. Moyer, T.E. Evans, S. Mordijck, T.H. Osborne, M.E. Fenstermacher, P.B. Snyder, E.A. Unterberg   +7 more
openaire   +1 more source