Results 41 to 50 of about 304,251 (189)

Experiments and modelling on ASDEX Upgrade and WEST in support of tool development for tokamak reactor armour melting assessments

Nuclear Materials and Energy, 2022
The risk of metallic armour melting constitutes a major concern for ITER and DEMO. Combined computational and experimental effort has led to a successful understanding of melt dynamics in present-day tokamaks, but there remain unexplored melting regimes ...
S. Ratynskaia, K. Paschalidis, P. Tolias, K. Krieger, Y. Corre, M. Balden, M. Faitsch, A. Grosjean, Q. Tichit, R.A. Pitts   +9 more
doaj   +1 more source

Experimental investigation of L- and H-mode detachment via the divertor Thomson scattering at ASDEX Upgrade

Nuclear Fusion, 2022
The capabilities of the newly installed divertor Thomson Scattering (DTS) diagnostic (Kurzan et al 2021 J. Inst. 16 C09012) at ASDEX Upgrade (AUG) have been demonstrated by measuring 2D electron densities n e and temperatures T e from attached to fully ...
M. Cavedon, B. Kurzan, M. Bernert, D. Brida, R. Dux, M. Griener, S. Henderson, E. Huett, T. Nishizawa, T. Lunt, O. Pan, U. Stroth, M. Wischmeier, E. Wolfrum, the ASDEX Upgrade team   +14 more
semanticscholar   +1 more source

Edge turbulence measurements in L-mode and I-mode at ASDEX Upgrade

Physics of Plasmas, 2022
The I-mode confinement regime is promising for future reactor operation due to high energy confinement without high particle confinement. However, the role of edge turbulence in creating I-mode's beneficial transport properties is still unknown.
R. Bielajew, G. Conway, M. Griener, T. Happel, K. Höfler, N. Howard, A. Hubbard, W. McCarthy, P. M. Molina Cabrera, T. Nishizawa, P. Rodriguez-Fernandez, D. Silvagni, B. Vanovac, D. Wendler, C. Yoo, A. White   +15 more
semanticscholar   +1 more source

Fusion Materials Development at Forschungszentrum Jülich

Advanced Engineering Materials, Volume 22, Issue 6, June 2020., 2020
In fusion material research, the focus has been twofold‐plasma facing and structural materials allowing to withstand the extreme conditions such as neutron bombardment and high heat fluxes. In this contribution, the background for the choice of tungsten as first wall material is given and the advanced materials developed at Forschungszentrum Jülich ...
Jan Willem Coenen
wiley   +1 more source

Impact of drifts in the ASDEX upgrade upper open divertor using SOLPS‐ITER

Contributions to Plasma Physics, Volume 60, Issue 5-6, June-July 2020., 2020
Abstract SOLPS‐ITER L‐mode‐like simulations with the full set of currents and drift velocities activated, and fluid neutrals have been carried out to interpret experimental results obtained in AUG. Drifts are critical to quantitatively reproduce the experimental results; however, simulations without drifts can also reproduce some trends qualitatively ...
I. Paradela Pérez, M. Groth, M. Wischmeier, D. Coster, D. Brida, P. David, D. Silvagni, M. Faitsch, the ASDEX‐Upgrade Team, the EUROfusion MST1 Team   +9 more
wiley   +1 more source

Effect of magnetic perturbation fields on power decay length in EMC3-EIRENE simulations and comparison to experiment in ASDEX upgrade

Nuclear Materials and Energy, 2019
Previous simulation results for the tokamak ASDEX Upgrade have shown that Magnetic Perturbation (MP) fields could lead to a decrease of the peak heat flux onto the divertor targets. However, experimentally, such a decrease has not been observed.
D. Brida, T. Lunt, M. Faitsch, M. Wischmeier, Y. Feng, W. Suttrop, U. Stroth, T. Eich   +7 more
doaj   +1 more source

Maximum likelihood bolometry for ASDEX upgrade experiments

Physica Scripta, 2023
Bolometry is an essential diagnostic for calculating the power balances and for the understanding of different physical aspects of tokamak experiments. The reconstruction method based on the Maximum Likelihood (ML) principle, developed initially for JET,
T. Craciunescu, E. Peluso, A. Murari, Matthias Bernert, M. Gelfusa, Riccardo Rossi, L. Spolladore, I. Wyss, P. David, S. Henderson, O. Février   +10 more
semanticscholar   +1 more source

I-mode pedestal relaxation events in the Alcator C-Mod and ASDEX Upgrade tokamaks [PDF]

Nuclear Fusion, 2021
In some conditions, I-mode plasmas can feature pedestal relaxation events (PREs) that transiently enhance the energy reaching the divertor target plates.
D. Silvagni, J. Terry, W. McCarthy, A. Hubbard, T. Eich, M. Faitsch, L. Gil, T. Golfinopoulos, G. Grenfell, M. Griener, T. Happel, J. Hughes, U. Stroth, E. Viezzer, the ASDEX Upgrade team, the Eurofusion MST1 Team   +15 more
semanticscholar   +1 more source

The ASDEX Upgrade discharge schedule [PDF]

Fusion Engineering and Design, 2007
Abstract ASDEX Upgrade's recently commissioned discharge control system (DCS) marks the transition from a traditional programmed system to a highly flexible “data driven” one. The allocation of application processes (APs) to controllers, the interconnection of APs through uniquely named signals, and AP control parameter values are all defined as data,
Neu, G., Engelhardt, K., Raupp, G., Treutterer, W., Zasche, D., Zehetbauer, T.   +5 more
openaire   +2 more sources

The separatrix operational space of ASDEX Upgrade due to interchange-drift-Alfvén turbulence

Nuclear Fusion, 2021
The efficient operation of a tokamak is limited by several constraints, such as the transition to high confinement or the density limits occurring in both confinement regimes. These particular boundaries of operation are derived in terms of a combination
T. Eich, P. Manz, the ASDEX Upgrade team
semanticscholar   +1 more source