Results 11 to 20 of about 311,028 (224)

Experiences with a solid tungsten divertor in ASDEX Upgrade

Nuclear 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.
A. Herrmann, I. Zammuto, M. Balden, H. Greuner, N. Jaksic, A. Kallenbach, M. Li, R. Neu, V. Rohde   +8 more
doaj   +3 more sources

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

Nuclear 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 ...
T. Lunt, H. Zohm, A. Herrmann, A. Kallenbach, M. Dunne, Y. Feng, R. Neu, M. Wischmeier   +7 more
doaj   +3 more sources

Validation of the Fenix ASDEX Upgrade flight simulator

Fusion 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).
F. Janky, E. Fable, W. Treutterer, C. Angioni, M. Englberger, I. G. Ortiz, K. Lackner, T. Luda, M. Siccinio, M. Weiland   +9 more
semanticscholar   +3 more sources

The high field side high density region in SOLPS-modeling of nitrogen-seeded H-modes in ASDEX Upgrade

Nuclear Materials and Energy, 2017
The understanding of divertor physics and the evolution of divertor detachment is crucial for developing the capability to model power exhaust in current experiments and reliably predict it for future fusion devices.
F. Reimold, M. Wischmeier, S. Potzel, L. Guimarais, D. Reiter, M. Bernert, M. Dunne, T. Lunt   +7 more
doaj   +3 more sources

Overview of ASDEX Upgrade results [PDF]

Nuclear Fusion, 2009
ASDEX Upgrade was operated with a fully W-covered wall in 2007 and 2008. Stationary H-modes at the ITER target values and improved H-modes with H up to 1.2 were run without any boronization. The boundary conditions set by the full W wall (high enough ELM frequency, high enough central heating and low enough power density arriving at the target plates ...
Zohm H., Adamek J., Angioni C., Antar G., Atanasiu C. V., Balden M., Becker W., Behler K., Behringer K., Bergmann A., Bertoncelli T., Bilato R., Bobkov V., Boom J., Bottino A., Brambilla M., Braun F., Bruedgam M., Buhler A., Chankin A., Classen I., Conway G. D., Coster D. P., de Marne P., D'Inca R., Drube R., Dux R., Eich T., Engelhardt K., Esposito B., Fahrbach H-U., Fattorini L., Fink J., Fischer R., Flaws A., Foley M., Forest C., Fuchs J. C., Gal K., Munoz M. Garcia, Adamov M. Gemisic, Giannone L., Goerler T., Gori S., da Graca S., Granucci G., Greuner H., Gruber O., Gude A., Guenter S., Haas G., Hahn D., Harhausen J., Hauff T., Heinemann B., Herrmann A., Hicks N., Hobirk J., Hoelzl M., Holtum D., Hopf C., Horton L., Huart M., Igochine V., Janzer M., Jenko F., Kallenbach A., Kalvin S., Kardaun O., Kaufmann M., Kick M., Kirk A., Klingshirn H-J., Koscis G., Kollotzek H., Konz C., Krieger K., Kurki-Suonio, T., Kurzan B., Lackner K., Lang P. T., Langer B., Lauber P., Laux M., Leuterer F., Likonen J., Liu L., Lohs A., Lunt T., Lyssoivan A., Maggi C. F., Manini A., Mank K., Manso M-E., Mantsinen M., Maraschek M., Martin P., Mayer M., McCarthy P., McCormick K., Meister H., Meo F., Merkel P., Merkel R., Mertens V., Merz F., Meyer H., Mlynek A., Monaco F., Mueller H-W., Muenich M., Murmann H., Neu G., Neu R., Neuhauser J., Nold B., Noterdaeme J-M., Pautasso G., Pereverzev G., Poli E., Potzel, S., Pueschel M., Puetterich T., Pugno R., Raupp G., Reich M., Reiter B., Ribeiro T., Riedl R., Rohde V., Roth J., Rott M., Ryter F., Sandmann W., Santos J., Sassenberg, K., Sauter P., Scarabosio A., Schall G., Schilling H-B., Schirmer J., Schmid A., Schmid K., Schneider W., Schramm G., Schrittwieser R., Schustereder W., Schweinzer J., Schweizer S., Scott B., Seidel U., Sempf M., Serra F., Sertoli M., Siccinio M., Sigalov A., Silva A., Sips C. C., Speth E., Staebler A., Stadler R., Steuer K-H., Stober J., Streibl B., Strumberger E., Suttrop W., Tardini G., Tichmann C., Treutterer W., Troester C., Urso L., Vainonen-Ahlgren E., Varela P., Vermare L., Volpe F., Wagner D., Wigger C., Wischmeier M., Wolfrum E., Wuersching E., Yadikin D., Yu Q., Zasche D., Zehetbauer T., Zilker M.   +187 more
openaire   +11 more sources

Dust investigations at ASDEX Upgrade [PDF]

Physica Scripta, 2009
Investigations on dust in the full tungsten divertor tokamak, ASDEX Upgrade, are summarized. Newly designed collectors are used to distinguish plasma-produced dust from other kinds of debris. Whereas submicron particles are often tungsten spheres, larger ones are agglomerates from tungsten in a boron/carbon matrix.
Rohde, V., Balden, M., Lunt, T., ASDEX Upgrade Team   +3 more
openaire   +4 more sources

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

Contributions 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, Udo von Toussaint, Hans‐Joachim Bungartz, Jonathan Schilling, Christopher G. Albert, W7‐X Team   +5 more
wiley   +1 more source

Compact Radiative Divertor Experiments at ASDEX Upgrade and Their Consequences for a Reactor.

Physical Review Letters, 2023
We present a novel concept to tackle the power exhaust challenge of a magnetically confined fusion plasma. It relies on the prior establishment of an X-point radiator that dissipates a large fraction of the exhaust power before it reaches the divertor ...
T. Lunt, M. Bernert, D. Brida, P. David, M. Faitsch, O. Pan, D. Stieglitz, U. Stroth, A. Redl   +8 more
semanticscholar   +1 more source

Sensitivity of Microwave Interferometer in the Limiter Shadow to filaments in ASDEX upgrade

Contributions to Plasma Physics, Volume 62, Issue 5-6, June‐July 2022., 2022
Abstract Microwave Interferometer in the Limiter Shadow (MILS) is a new diagnostic, installed on ASDEX Upgrade for electron density measurements in the far Scrape‐Off Layer (SOL). At the chosen frequency of 47 GHz, the region of measurements varies within several centimetres before and after the limiter, depending on the density.
Mariia Usoltceva, Stéphane Heuraux, Ildar Khabibullin, Helmut Faugel, Helmut Fünfgelder, Volodymyr Bobkov, ASDEX Upgrade Team   +6 more
wiley   +1 more source

SOLPS-ITER simulations of an X-point radiator in the ASDEX Upgrade tokamak

Nuclear Fusion, 2022
The X-point radiator (XPR) is an attractive scenario that may contribute to solving the power exhaust problem in future fusion devices. The 2D transport code SOLPS-ITER was applied to reproduce the experimentally measured plasma condition with an XPR in ...
O. Pan, M. Bernert, T. Lunt, M. Cavedon, B. Kurzan, S. Wiesen, M. Wischmeier, U. Stroth, the Asdex Upgrade team   +8 more
semanticscholar   +1 more source