Results 1 to 10 of about 19,201,791 (202)

H-mode transition and pedestal studies. [PDF]

Philos Trans A Math Phys Eng Sci, 2023
The high confinement mode (H-mode) is the widely adopted standard operation scenario for the path to fusion in toroidal confinement devices. Since its discovery in 1982, the H-mode and access to the H-mode (the low to high and high to low transitions) remain two of the most actively researched areas in magnetically confined fusion programmes across the
Andrew Y, Kim EJ.
europepmc   +3 more sources

H-mode dithering phase studies on ST40. [PDF]

Philos Trans A Math Phys Eng Sci, 2023
The dithering H-mode phase, characterized by oscillations, is generally observed at input power values close to the L-H transition power threshold and low plasma collisionalities (low electron density and/or high plasma temperature). Measurements to characterize the dithering phase are presented for the low aspect ratio, high magnetic ...
Andrew Y, Bland J, Buxton P, Dnestrovskij A, Gryaznevich M, Kim EJ, Romanelli M, Sertoli M, Thomas P, Varje J.   +9 more
europepmc   +3 more sources

Comparative H-mode density limit studies in JET and AUG

Nuclear Materials and Energy, 2017
Identification of the mechanisms for the H-mode density limit in machines with fully metallic walls, and their scaling to future devices is essential to find for these machines the optimal operational boundaries with the highest attainable density and ...
A. Huber, M. Bernert, S. Brezinsek, A.V. Chankin, G. Sergienko, V. Huber, S. Wiesen, P. Abreu, M.N.A. Beurskens, A. Boboc, M. Brix, G. Calabrò, D. Carralero, E. Delabie, T. Eich, H.G. Esser, M. Groth, C. Guillemaut, S. Jachmich, A. Järvinen, E. Joffrin, A. Kallenbach, U. Kruezi, P. Lang, Ch. Linsmeier, C.G. Lowry, C.F. Maggi, G.F. Matthews, A.G. Meigs, Ph. Mertens, F. Reimold, J. Schweinzer, G. Sips, M. Stamp, E. Viezzer, M. Wischmeier, H. Zohm   +36 more
doaj   +2 more sources

The updated ITPA global H-mode confinement database: description and analysis

Nuclear Fusion, 2021
The multi-machine International Tokamak Physics Activity (ITPA) Global H-mode Confinement Database has been upgraded with new data from JET with the ITER-like wall and ASDEX Upgrade with the full tungsten wall.
G. Verdoolaege, S. Kaye, C. Angioni, O. Kardaun, M. Maslov, M. Romanelli, F. Ryter, K. Thomsen, the ASDEX Upgrade team, the EUROfusion MST1 team, J. Contributors   +10 more
semanticscholar   +1 more source

Modulation behaviour and possible existence criterion of geodesic acoustic modes in tokamak devices

Nuclear Fusion, 2023
Geodesic acoustic modes (GAMs) represent the oscillating counterpart of zonal flow in tokamak plasma and can affect transport due to their interaction with turbulence eddies.
F. Palermo, G.D. Conway, E. Poli, C.M. Roach   +3 more
doaj   +1 more source

Fluid modeling of an ELMing H-mode and a RMP H-mode [PDF]

Journal of Nuclear Materials, 2009
Abstract In this paper, we investigate the role of wall conditions during the density pump-out observed in Resonant Magnetic Perturbation (RMP) experiments. We use a 2D fluid code, coupled to a neutral Monte-Carlo code (SOLPS5) to model a reference ELMing H-mode.
Mordijck, S., Moyer, R. A., Evans, T. E., Bonnin, X., Canik, J., Coster, D., Groth, M., Maingi, R., Osborne, T. H., Owen, L. W., Petrie, T. W., Reiter, D., Watkins, J. G., Unterberg, E. A.   +13 more
openaire   +3 more sources

Stationary ELM-free H-mode in ASDEX Upgrade

Nuclear Fusion, 2020
A stationary H-mode without edge localized modes (ELMs) has been recently achieved in the ASDEX Upgrade tokamak by applying central electron cyclotron resonance heating above the L-H power threshold with adequate fueling.
L. Gil, C. Silva, T. Happel, G. Birkenmeier, M. Cavedon, G. Conway, L. Guimarais, T. Pütterich, J. L. Santos, M. Schubert, E. Seliunin, A. Silva, J. Stober, U. Stroth, E. Trier, E. Wolfrum, E. Team   +16 more
semanticscholar   +1 more source

Direct measurement of the electron turbulence-broadening edge transport barrier to facilitate core–edge integration in tokamak fusion plasmas

Nuclear Fusion, 2023
The integration of a high-performance core and a dissipative divertor, or the so-called ‘core–edge integration,’ has been widely identified as a critical gap in the design of future fusion reactors.
H.Q. Wang, R. Hong, X. Jian, T.L. Rhodes, H.Y. Guo, A.W. Leonard, X. Ma, J.G. Watkins, J. Ren, B.A. Grierson, M.W Shafer, F. Scotti, T.H. Osborne, D.M. Thomas, Z. Yan   +14 more
doaj   +1 more source

Micro-tearing mode dominated electron heat transport in DIII-D H-mode pedestal

Nuclear Fusion, 2023
A new, comprehensive set of evidence reveals that Micro-Tearing Modes (MTMs) dominate pedestal electron heat transport in an H-mode experiment in the DIII-D tokamak. The experiment investigates the role of MTMs by scanning pedestal collisionality, a main
J. Chen, X. Jian, D.L. Brower, S.R. Haskey, Z. Yan, R. Groebner, H.Q. Wang, T.L. Rhodes, F. Laggner, W. Ding, K. Barada, S. Banerjee   +11 more
doaj   +1 more source

Fast Decision Method for H.266/VVC Intra Prediction Mode [PDF]

Jisuanji gongcheng, 2021
In order to reduce the coding complexity of the new generation of high-efficiency video coding standard H.266/VVC, a fast prediction mode decision method is proposed for intra coding.The distribution characteristic of transform residuals is first ...
LI Wei, FAN Caixia
doaj   +1 more source