Results 11 to 20 of about 416,653 (194)

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   +2 more sources

Experiences with a solid tungsten divertor in ASDEX Upgrade

open access: yesNuclear Materials and Energy, 2017
In 2013 a redesigned solid tungsten divertor, Div-III, was installed in ASDEX Upgrade. In two experimental campaigns more than 2700 plasma discharges with up to 10s duration, 110MJ plasma heating, and reaching a Psep/R of 10MW/m were conducted.
Muyuan Li, Rudolf Neu, Martin Balden
exaly   +3 more sources

Proposal of an alternative upper divertor in ASDEX Upgrade supported by EMC3-EIRENE simulations

open access: yesNuclear Materials and Energy, 2017
We discuss the benefits of installing a pair of in-vessel coils with currents |Ifx| ≲ 50 kAt in the upper divertor of ASDEX Upgrade (AUG) to study a series of ‘alternative’ divertor configurations, like the Snowflake (SF) and the X-divertor (XD), that ...
Marco Wischmeier, Mike Dunne, Rudolf Neu
exaly   +3 more sources

Validation of the Fenix ASDEX Upgrade flight simulator

open access: yesFusion Engineering and Design, 2021
Fenix [1] , [2] is the ASDEX Upgrade (AUG) flight simulator based on the 1-D transport code ASTRA coupled with the 2-D equilibrium solver [ 3 ] SPIDER and Simulink (simulation platform integrated with MATLAB).
Wolfgang Treutterer
exaly   +2 more sources

Overview of the ASDEX Upgrade results

open access: yesNuclear Fusion
After a 26-month vent ASDEX Upgrade (AUG) went back in operation with a newly designed upper W-divertor suitable for alternative divertor configurations (featuring in-vessel coils and cryo-pump).
T. Pütterich   +428 more
doaj   +2 more sources

2D and 3D studies of the X-divertor configuration in the future upper divertor of ASDEX upgrade

open access: yesNuclear Materials and Energy, 2019
ASDEX Upgrade is planning the installation of a pair of in-vessel coils in order to study alternative divertor configurations, like an X-divertor (XD) or a Snowflake (SF) in a machine with a high heating power compared to its size.
Marco Wischmeier, Mike Dunne, Ou Pan
exaly   +3 more sources

Complex structure of turbulence across the ASDEX Upgrade pedestal [PDF]

open access: yesJournal of Plasma Physics, 2023
The theoretical investigation of relevant turbulent transport mechanisms in H-mode pedestals is a great scientific and numerical challenge. In this study, we address this challenge by global, nonlinear gyrokinetic simulations of a full pedestal up to the
L. Leppin   +6 more
semanticscholar   +1 more source

Global gyrokinetic simulations of ASDEX Upgrade up to the transport timescale with GENE–Tango [PDF]

open access: yesNuclear Fusion, 2022
An accurate description of turbulence up to the transport timescale is essential for predicting core plasma profiles and enabling reliable calculations for designing advanced scenarios and future devices.
A. Di Siena   +15 more
semanticscholar   +1 more source

Design of the shattered pellet injection system for ASDEX Upgrade.

open access: yesReview of Scientific Instruments, 2023
A new shattered pellet injection system was designed and built to perform disruption mitigation experiments on ASDEX Upgrade. The system can inject pellets with diameters of 1, 2, 4, or 8 mm with variable lengths over a range of L/D ratios of ∼0.5-1.5 ...
M. Dibon   +12 more
semanticscholar   +1 more source

Uncertainty quantification in three‐dimensional magnetohydrodynamic equilibrium reconstruction via surrogate‐assisted Bayesian inference

open access: yesContributions to Plasma Physics, Volume 63, Issue 5-6, June-July 2023., 2023
Abstract In three‐dimensional (3D) equilibrium, reconstruction defining parameters of an ideal magneto‐hydrodynamic equilibrium are inferred from a set of plasma diagnostic measurements. For the reconstructed parameters, various forms of uncertainty estimates exist within common 3D reconstruction frameworks.
Robert Köberl   +5 more
wiley   +1 more source

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