Results 21 to 30 of about 52,799 (163)

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

TEM analysis of recrystallized double forged tungsten after exposure in JUDITH 1 and JUDITH 2

Nuclear Materials and Energy, 2016
Five samples of recrystallized pure tungsten were exposed to transient heat loads using the electron beam of the JUDITH 1 and JUDITH 2 installations of Forschungszentrum Jülich.
W. Van Renterghem, I. Uytdenhouwen, Th. Loewenhoff, M. Wirtz   +3 more
doaj   +1 more source

Wall conditioning and ELM mitigation with boron nitride powder injection in KSTAR

Nuclear Materials and Energy, 2021
Results from KSTAR powder injection experiments, in which tens of milligrams of boron nitride (BN) were dropped into low-power H-mode plasmas, show an improvement in wall conditions in subsequent discharges and, in some cases, a reduction or elimination ...
E.P. Gilson, H.H. Lee, A. Bortolon, W. Choe, A. Diallo, S.H. Hong, H.M. Lee, J. Lee, R. Maingi, D.K. Mansfield, A. Nagy, S.H. Park, I.W. Song, J.I. Song, S.W. Yun, S.W. Yoon, R. Nazikian   +16 more
doaj   +1 more source

Wide edge state supercontinuum in a Floquet–Lieb topological photonic insulator

APL Photonics, 2023
Conventional topological photonic insulators typically have narrow nontrivial band gaps truncated by broad dispersive bulk bands, resulting in limited edge mode transmission bandwidths that can be exploited for potential applications.
Hanfa Song, Tyler J. Zimmerling, Bo Leng, Vien Van   +3 more
doaj   +1 more source

Localization of edge state in acoustic topological insulators by curvature of space

New Journal of Physics, 2023
Topological insulators (TIs) with robust boundary states against perturbations and disorders have boosted intense research in classical systems. In general, two-dimensional (2D) TIs are designed on a flat surface with special boundary to manipulate the ...
Jia-Qi Quan, Hong-Wei Wu, Yun-Kai Liu, Peng-Xiang Xie, Zong-Qiang Sheng   +4 more
doaj   +1 more source

Visualization of core and edge MHD instabilities in 2D using ECEI

EPJ Web of Conferences, 2012
MHD instabilities in the core and edge of the KSTAR plasmas have been visualized in 2D using an electron cyclotron emission imaging (ECEI) system with sufficient time and space resolutions for the study of the underlying dynamics.
Donné A. J. H., Luhmann N.C., Domier C.W., Park H.K., Choe G.H., Lee J., Choi M.J., Lee W., Yun G.S., Lee J.H., Park S.I., Joung M., Bae Y.S., Jeon Y.M., Yoon S.W.   +14 more
doaj   +1 more source

MHD simulations of formation, sustainment and loss of quiescent H-mode in the all-tungsten ASDEX Upgrade

Nuclear Fusion, 2023
Periodic edge localized modes (ELMs) are the non-linear consequences of pressure-gradient-driven ballooning modes and current-driven peeling modes becoming unstable in the pedestal region of high confinement fusion plasmas.
Lorenz Meier, Matthias Hoelzl, Andres Cathey, Guido Huijsmans, Eleonora Viezzer, Mike Dunne, Jan van Dijk, Diego José Cruz Zabala, Karl Lackner, Sibylle Günter, the ASDEX Upgrade Team, the EUROfusion MST1 Team, the JOREK Team   +12 more
doaj   +1 more source

Plasma performance and operational space with an RMP-ELM suppressed edge

Nuclear Fusion
The operational space and global performance of plasmas with edge-localized modes (ELMs) suppressed by resonant magnetic perturbations (RMPs) are surveyed by comparing AUG, DIII-D, EAST, and KSTAR stationary operating points.
C. Paz-Soldan, S. Gu, N. Leuthold, P. Lunia, P. Xie, M.W. Kim, S.K. Kim, N.C. Logan, J.-K. Park, W. Suttrop, Y. Sun, D.B. Weisberg, M. Willensdorfer, the ASDEX Upgrade Team, the DIII-D Team, the EAST Team, the KSTAR Team   +16 more
doaj   +1 more source

Effects of different interlaminar hybridization and localized edge loads on the vibration and buckling behavior of fiber metal composite laminates

Composites Part C: Open Access, 2021
This investigation presents the effect of different interlaminar hybridization and localized in-plane edge loads on the vibration and buckling characteristics of hybrid fiber metal laminates (HFMLs) by developing finite element formulation.
P.P. Yathish Muddappa, T. Rajanna, G. Giridhara   +2 more
doaj   +1 more source

Simulation of edge localized mode heat pulse using drift-kinetic ions and Boltzmann electrons

Nuclear Materials and Energy, 2019
This article reports on 1D+2V heat pulse propagation studies using the COGENT guiding center kinetic code. The model uses magnetized kinetic ions and a simple Boltzmann electron model.
I. Joseph, M.A. Dorf, M.R. Dorr
doaj   +1 more source