Results 1 to 10 of about 1,265,454 (291)

H-mode transition and pedestal studies. [PDF]

open access: yesPhilos 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]

open access: yesPhilos 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   +9 more
europepmc   +3 more sources

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

open access: yesNuclear 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   +3 more
doaj   +1 more source

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

open access: yesJournal 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.   +13 more
openaire   +3 more sources

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

open access: yesNuclear 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   +14 more
doaj   +1 more source

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

open access: yesNuclear 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   +11 more
doaj   +1 more source

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

open access: yesJisuanji 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

Probing the $$h c\bar{c} $$ h c c ¯ coupling at a Future Circular Collider in the electron-hadron mode

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We study the production of a neutral Higgs boson at a Future Circular Collider in the electron-hadron mode (FCC-eh) through the leading process $$e^- p \rightarrow \nu _e h q $$ e - p → ν e h q assuming the decay channel $$h \rightarrow c \bar{c} $$ h ...
J. Hernández-Sánchez   +2 more
doaj   +1 more source

Overview of initial negative triangularity plasma studies on the ASDEX Upgrade tokamak

open access: yesNuclear Fusion, 2022
An overview of results of negative triangularity (NT) studies from the ASDEX Upgrade tokamak (AUG) is given. Moderate values of the triangularity in the range of δ _average ≈ −0.2 have been obtained.
T. Happel   +8 more
doaj   +1 more source

Random coefficient H-mode confinement scalings [PDF]

open access: yesNuclear Fusion, 1992
The random coefficient two-stage regression algorithm with the collisional Maxwell-Vlasov constraint is applied to the ITER H-mode confinement database. The data violate the collisional Maxwell-Vlasov constraint at the 10-30% significance level, probably owing to radiation losses. The dimensionally constrained scaling, $ _E = 0.07192 M^{1/2}$ $(R/a)^{-
openaire   +2 more sources

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