Results 71 to 80 of about 304,251 (189)

Experiments and modelling of negative triangularity ASDEX Upgrade plasmas in view of DTT scenarios

Plasma Physics and Controlled Fusion
The paper presents experimental and modelling results of a comparison of negative (NT) and positive (PT) triangularity ASDEX Upgrade (AUG) discharges using the plasma shapes presently foreseen in the DTT tokamak, under construction in Italy. This work is
L. Aucone, P. Mantica, T. Happel, J. Hobirk, T. Pütterich, B. Vanovac, C. Zimmermann, M. Bernert, T. Bolzonella, M. Cavedon, M. Dunne, R. Fischer, P. Innocente, A. Kappatou, R. McDermott, A. Mariani, P. Muscente, U. Plank, F. Sciortino, G. Tardini, the EUROfusion WPTE Team, the Asdex Upgrade team   +21 more
semanticscholar   +1 more source

The quasi-continuous exhaust regime in ASDEX Upgrade and JET

Nuclear 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, M. Dunne, E. Lerche, P. Lomas, I. Balboa, P. Bilkova, P. Bohm, L. Gil, G.F. Harrer, A. Kappatou, D. Kos, B. Labit, L. Radovanovic, A. Redl, O. Sauter, S. Silburn, E.R. Solano, A. Tookey, E. Viezzer, E. Wolfrum, U. Stroth   +20 more
doaj   +1 more source

Arc behaviour on different materials in ASDEX Upgrade

Nuclear 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

ASCOT orbit-following simulations of ion cyclotron heating with synthetic fast ion loss diagnostic: a first application to ASDEX Upgrade

Nuclear Fusion, 2021
The orbit-following Monte Carlo code ASCOT interfaced with the radiofrequency Monte Carlo library RFOF can simulate radiofrequency heating of ion populations using wave solutions from full-wave solvers such as TORIC. It is applied to the fundamental mode
S. Sipilä, J. Varje, T. Johnson, R. Bilato, J. Galdón-Quiroga, A. Snicker, T. Kurki-Suonio, L. Sanchís, D. Silvagni, J. Gonzalez-Martin, the Asdex Upgrade team, the EUROfusion MST1 Team   +11 more
semanticscholar   +1 more source

Non-linear extended MHD simulations of type-I edge localised mode cycles in ASDEX Upgrade and their underlying triggering mechanism [PDF]

Nuclear Fusion, 2020
A triggering mechanism responsible for the explosive onset of edge localised modes (ELMs) in fusion plasmas is identified by performing, for the first time, non-linear magnetohydrodynamic simulations of repetitive type-I ELMs.
A. Cathey, M. Hoelzl, K. Lackner, Gta Guido Huijsmans, M. Dunne, E. Wolfrum, S. Pamela, F. Orain, S. Günter   +8 more
semanticscholar   +1 more source

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

Nuclear 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, E. Kaveeva, V. Rozhansky, X. Bonnin   +3 more
doaj   +1 more source

X-point radiation, its control and an ELM suppressed radiating regime at the ASDEX Upgrade tokamak

Nuclear Fusion, 2020
Future fusion reactors require a safe, steady state divertor operation. The required detached operation is, in tokamaks with metal walls, usually achieved by seeding of impurities, such as nitrogen.
M. Bernert, F. Janky, B. Sieglin, A. Kallenbach, B. Lipschultz, F. Reimold, M. Wischmeier, M. Cavedon, P. David, M. Dunne, M. Griener, O. Kudlacek, R. McDermott, W. Treutterer, E. Wolfrum, D. Brida, O. Février, S. Henderson, M. Komm   +18 more
semanticscholar   +1 more source

Inter-discharge optimization for fast, reliable access to ASDEX Upgrade advanced tokamak scenario

Nuclear Fusion
Rapid inter-discharge simulation and optimization using the RAPTOR code have allowed the development of a reliable and reproducible early heating strategy for an advanced tokamak (AT) scenario on ASDEX Upgrade.
S. van Mulders, O. Sauter, Alexander Bock, A. Burckhart, C. Contré, F. Felici, Rainer Fischer, R. Schramm, J. Stober, H. Zohm, Asdex Upgrade team   +10 more
semanticscholar   +1 more source

Overview of the isotope effects in the ASDEX Upgrade tokamak

Plasma Physics and Controlled Fusion, 2021
In recent years, measurements on the ASDEX Upgrade tokamak and modelling performed for plasmas with hydrogen (H) and deuterium (D) as the main gas have improved our understanding of the ion mass dependencies in fusion plasmas.
P. Schneider, P. Hennequin, N. Bonanomi, M. Dunne, G. Conway, U. Plank   +5 more
semanticscholar   +1 more source

New boronization system at ASDEX Upgrade

, 2021
The coating of plasma facing components (PFC) with boron significantly improves the performance of plasma operation in magnetic fusion devices. The boron layer traps residual oxygen in the vacuum vessel, thus reducing radiative losses due to collisions ...
M. Dibon, V. Rohde, F. Stelzer, K. Hegele, M. Uhlmann   +4 more
semanticscholar   +1 more source