Results 51 to 60 of about 416,653 (194)

Non-linear free boundary simulations of the plasma response to resonant magnetic perturbations in ASDEX Upgrade plasmas

Journal of Physics, Conference Series, 2022
A promising method for the control of Edge Localized Modes (ELMs) in H-Mode tokamak plasmas is the application of Resonant Magnetic Perturbations (RMPs), where small helical field perturbations are introduced into the plasma via a set of external coils ...
V. Mitterauer, M. Hoelzl, M. Willensdorfer, M. Dunne, N. Schwarz, J. Artola, J.-TEXT team, ASDEX-Upgrade team   +7 more
semanticscholar   +1 more source

Feedback-controlled NTM stabilization on ASDEX Upgrade

EPJ Web of Conferences, 2015
On ASDEX Upgrade a concept for real-time stabilization of NTMs has been realized and successfully applied to (3,2)- and (2,1)-NTMs. Since most of the work has meanwhile been published elsewhere, a short summary with the appropriate references is given ...
Stober J., Barrera L., Behler K., Bock A., Buhler A., Eixenberger H., Giannone L., Kasparek W., Maraschek M., Mlynek A., Monaco F., Poli E., Rapson C.J., Reich M., Schubert M., Treutterer W., Wagner D., Zohm H.   +17 more
doaj   +1 more source

Microwave diagnostics damage by parametric decay instabilities during electron cyclotron resonance heating in ASDEX Upgrade

Plasma Physics and Controlled Fusion, 2021
We present observations of microwave diagnostics damage in three discharges employing third-harmonic X-mode electron cylcotron resonance heating (ECRH) at the ASDEX Upgrade tokamak.
S. Hansen, A. Jacobsen, M. Willensdorfer, S. Nielsen, J. Stober, K. Höfler, M. Maraschek, R. Fischer, M. Dunne   +8 more
semanticscholar   +1 more source

Surface features of strongly heated bulk tungsten divertor plates at ASDEX Upgrade

Nuclear Materials and Energy, 2023
Solid tungsten tiles exposed at the outer strike point module of the ASDEX Upgrade divertor show cracks parallel to surface in the bulk and humps at the surface. At ASDEX Upgrade these horizontal cracks were observed for the first time. About 10 % of all
V. Rohde, M. Balden, K. Hunger, I. Zammuto, A. Herrmann, R. Neu   +5 more
doaj   +1 more source

Electric field and turbulence in global Braginskii simulations across the ASDEX Upgrade edge and scrape-off layer

, 2021
Turbulence simulations in diverted geometry across the edge and scrape-off layer (SOL) of ASDEX Upgrade are performed with the GRILLIX code (Stegmeir et al 2019 Phys. Plasmas 26 052517).
W. Zholobenko, T. Body, P. Manz, A. Stegmeir, Ben Zhu, M. Griener, G. Conway, D. Coster, F. Jenko   +8 more
semanticscholar   +1 more source

Optimization of the computation of total and local radiated power at ASDEX Upgrade

Nuclear Fusion, 2021
Radiation losses are measured as a line integrated quantity from the plasma, on ASDEX Upgrade using foil bolometers. Based on these measurements, the computation of the radiated power from either the whole volume or any sub region requires post ...
P. David, M. Bernert, T. Pütterich, C. Fuchs, S. Glöggler, T. Eich, the ASDEX Upgrade Team   +6 more
semanticscholar   +1 more source

Confinement in electron heated plasmas in Wendelstein 7-X and ASDEX Upgrade; the necessity to control turbulent transport

Nuclear Fusion, 2021
In electron (cyclotron) heated plasmas, in both ASDEX Upgrade (L-mode) and Wendelstein 7-X, clamping of the ion temperature occurs at T i ∼ 1.5 keV independent of magnetic configuration.
M. Beurskens, C. Angioni, S. Bozhenkov, O. Ford, C. Kiefer, P. Xanthopoulos, Y. Turkin, J. A. Alcusón, J. Baehner, C. Beidler, G. Birkenmeier, E. Fable, G. Fuchert, B. Geiger, O. Grulke, M. Hirsch, M. Jakubowski, H. Laqua, A. Langenberg, S. Lazerson, N. Pablant, M. Reisner, P. Schneider, E. Scott, T. Stange, A. von Stechow, J. Stober, U. Stroth, T. Wegner, G. Weir, D. Zhang, A. Zocco, R. Wolf, H. Zohm, the W7-X Team, the ASDEX Upgrade Team, the EUROfusion MST1 Team   +36 more
semanticscholar   +1 more source

Erosion of tungsten and carbon markers in the outer divertor of ASDEX-Upgrade [PDF]

, 2007
The erosion of tungsten and carbon marker layers was studied in the outer divertor of ASDEX Upgrade. The outer strike point area and a large fraction of the outer baffle are net erosion areas for both materials. The net erosion rate of carbon is about 10–
Likonen, J., Rohde, V., V Rohde, J L Chen, Mayer, M., Ramos, G., Chen, J.L., J Likonen, ASDEX Upgrade Team, G Ramos, Vainonen-Ahlgren, E., Vainonen-Ahlgren, Elizaveta, Chen, J., Likonen, Jari; id_orcid, E Vainonen-Ahlgren, M Mayer   +15 more
core   +1 more source

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

Nuclear 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, S. An, T. Bräuer, D. Cipciar, C.P. Dhard, C. Killer, D. Naujoks, V. Rohde, R. Steinwehr, U. von Toussaint, L. Vano, H. Viebke   +11 more
doaj   +1 more source

Benign termination of runaway electron beams on ASDEX Upgrade and TCV

Plasma Physics and Controlled Fusion
This paper discusses the development of a benign termination scenario for runaway electron (RE) beams on ASDEX Upgrade and TCV. A systematic study revealed that a low electron density (n e) companion plasma was required to achieve a large MHD instability,
U. Sheikh, J. Decker, M. Hoppe, M. Pedrini, B. Sieglin, L. Simons, J. Cazabonne, J. Caloud, J. Cerovsky, S. Coda, C. Colandrea, A. Dal Molin, B. Duval, O. Ficker, M. Griener, G. Papp, G. Pautasso, C. Paz-Soldan, C. Reux, E. Tomesova, T. Wijkamp, the Asdex Upgrade team   +21 more
semanticscholar   +1 more source