Results 31 to 40 of about 455,514 (173)

On the ion and electron temperature recovery after the ELM-crash at ASDEX upgrade

Nuclear Materials and Energy, 2019
The access to fast measurements, i.e. Δt ≈ 100 µs, of the ions and the electrons during an entire edge localized cycle (ELM) reveals asymmetries in the recovery of the maximum edge gradients.
M. Cavedon, R. Dux, T. Pütterich, E. Viezzer, E. Wolfrum, M. Dunne, E. Fable, R. Fischer, G.F. Harrer, F.M. Laggner, A.F. Mink, U. Plank, U. Stroth, M. Willensdorfer, ASDEX Upgrade Team   +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

First results examining the compatibility of RMP ELM suppression with the radiating divertor in DIII-D [PDF]

Journal of Nuclear Materials, 2011
Abstract We report on recent DIII-D experiments that integrate edge localized mode (ELM) suppression using resonant magnetic perturbations (RMPs) with divertor heat flux reduction under radiating divertor conditions. Our results illustrate the limitations in maintaining ELM suppression at gas puffing levels that were representative of good puff and ...
Petrie, T. W., Evans, T. E., Fenstermacher, M. E., Mordijck, S., Brooks, N. H., Ferron, J. R., Hudson, B., Hyatt, A. W., Lasnier, C. J., Leonard, A. W., Luce, T. C., Moyer, R. A., Politzer, P. A., Schaffer, M. J., Snyder, P. B., Watkins, J. G.   +15 more
openaire   +1 more source

Effects of edge-localized electron cyclotron current drive on edge-localized mode suppression by resonant magnetic perturbations in DIII-D

Nuclear Fusion
According to recent DIII-D experiments (Logan et al 2024 Nucl. Fusion 64 014003), injecting edge localized electron cyclotron current drive (ECCD) in the counter-plasma-current (counter- I _p ) direction reduces the n = 3 resonant magnetic perturbation ...
Q.M. Hu, N.C. Logan, Q. Yu, A. Bortolon
doaj   +1 more source

Experimental Study on Extreme Learning Machine Applications for Speech Enhancement

IEEE Access, 2017
In wireless telephony and audio data mining applications, it is desirable that noise suppression can be made robust against changing noise conditions and operates in real time (or faster).
Tassadaq Hussain, Sabato Marco Siniscalchi, Chi-Chun Lee, Syu-Siang Wang, Yu Tsao, Wen-Hung Liao   +5 more
doaj   +1 more source

Plasmoid-mediated reconnection during nonlinear peeling–ballooning edge-localized modes

Nuclear Fusion, 2023
Plasmoid-mediated reconnection is investigated for nonlinear peeling–ballooning edge-localized modes (P-B ELMs). The formation of current sheets and the transition to 3D current sheet instability is demonstrated through fully nonlinear resistive MHD ...
Fatima Ebrahimi, Amitava Bhattacharjee
doaj   +1 more source

Salient Dates In American Art Education At The Ohio State University Volume 1

, 1982
Print Edition: 350 copies.Print Pages: 1 broadsidePrint Illustrations: ill. (halftone)Printing: LetterpressPaper: Mohawk SuperfineTypography: Handset KennerleyPhysical Dimensions: 44.5 x 58.5Colophon: 350 of these broadsheets have been printed from ...
Norris, Ross A.
core   +1 more source

Validation of an integrated modeling framework for investigating 3D plasma responses in tokamak plasmas

Nuclear Fusion
As contemporary experimental tokamaks are pushed toward reactor-relevant operation, they provide essential testbeds for demonstrating and exploring edge-localized mode (ELM) control strategies for deployment in future fusion pilot plants.
J. Butt, S.K. Kim, S.M. Yang, Q.M. Hu, E. Kolemen   +4 more
doaj   +1 more source

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

Radiatively tamed divertor thermal loading in resonant magnetic perturbation (RMP)-driven, ELM-crash-suppressed plasmas

Nuclear Fusion
Edge-localized-modes (ELMs) suppression by non-axisymmetric resonant-magnetic-perturbation (RMP) provides the way to reach high performance fusion plasmas without a threatening level of transient heat fluxes to the walls of fusion devices.
Yongkyoon In, H.H. Lee, K. Kim, A. Loarte, I.H. Choi, J.Y. Heo, Y.S. Han, Wonho Choe, J. Hwang, H. Shin   +9 more
doaj   +1 more source