Results 41 to 50 of about 387 (143)

Surface loss probabilities of boron-hydride radicals in W7-X and ASDEX Upgrade

open access: yesNuclear Materials and Energy
The surface loss probabilities of boron-hydride radicals on silicon surfaces have been measured during boronisations for wall conditioning in the stellarator W7-X and the tokamak ASDEX Upgrade using the cavity technique.
M. Mayer   +11 more
doaj   +1 more source

Investigation of probe surfaces after ion cyclotron wall conditioning in ASDEX upgrade

open access: yesNuclear Materials and Energy, 2017
For the first time, material analysis techniques have been applied to study the effect of ion cyclotron wall conditioning (ICWC) on probe surfaces in a metal-wall machine.
A. Garcia-Carrasco   +12 more
doaj   +1 more source

The quasi-continuous exhaust regime in ASDEX Upgrade and JET

open access: yesNuclear Materials and Energy
The quasi-continuous exhaust (QCE) regime is a type-I ELM-free high confinement regime obtained at high plasma shaping and high separatrix density. A comparison with various ELM-free regimes in the literature is presented together with potential physics ...
M. Faitsch   +20 more
doaj   +1 more source

Analysis of high frequency Alfvén eigenmodes observed in ASDEX Upgrade plasmas in the presence of RF-accelerated NBI ions

open access: yesNuclear Fusion, 2023
High frequency Alfvén eigenmodes in the ion cyclotron frequency range are actively researched on the ASDEX Upgrade tokamak (AUG). The general properties of this particular mode type are: ( a ) the mode is beam-driven and, if excited, can persist for the ...
R. Ochoukov   +16 more
doaj   +1 more source

Arc behaviour on different materials in ASDEX Upgrade

open access: yesNuclear Materials and Energy, 2021
Arcs, a source of dust particles and a localized erosion mechanism of the plasma-facing components, are found in all major fusion plasma devices. Measurements of arcs require diagnostics with high temporal and local resolution, which are not available at
V. Rohde, M. Balden, R. Neu
doaj   +1 more source

SOLPS-ITER modification for impurity transport modelling in the tokamak pedestal region

open access: yesNuclear Materials and Energy
Kinetic corrections to SOLPS-ITER fluid equations are made to extend their applicability for description of the neoclassical part of impurity transport to collisionless regimes of the main ions.
V. Korzueva   +3 more
doaj   +1 more source

Probing non-linear MHD stability of the EDA H-mode in ASDEX Upgrade

open access: yesNuclear Fusion, 2023
Regimes of operation in tokamaks that are devoid of large edge localised modes have to be better understood to extrapolate their applicability to reactor-relevant devices.
A. Cathey   +13 more
doaj   +1 more source

Heat transport at the boundary of ASDEX Upgrade [PDF]

open access: yesPlasma Physics and Controlled Fusion, 1997
The flow of heat in the scrape-off layer (SOL) region of ASDEX Upgrade is investigated and compared with simple modelling. Parallel heat transport is found to be consistent with electron heat conduction based on Spitzer - H?rm conductivity. Cross-field heat transport is characterized using radial e-folding distances for power, temperature and plasma ...
Pitcher, C.   +8 more
openaire   +3 more sources

ERO and PIC simulations of gross and net erosion of tungsten in the outer strike-point region of ASDEX Upgrade

open access: yesNuclear Materials and Energy, 2017
We have modelled net and gross erosion of W in low-density l-mode plasmas in the low-field side strike point region of ASDEX Upgrade by ERO and Particle-in-Cell (PIC) simulations.
A. Hakola   +9 more
doaj   +1 more source

Overview of the EUROfusion Tokamak Exploitation programme in support of ITER and DEMO

open access: yesNuclear Fusion
Within the 9th European Framework programme, since 2021 EUROfusion is operating five tokamaks under the auspices of a single Task Force called ‘Tokamak Exploitation’.
E. Joffrin   +814 more
doaj   +1 more source

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