Results 1 to 10 of about 311,592 (233)

Analysis and expansion of the quasi-continuous exhaust (QCE) regime in ASDEX Upgrade

Nuclear Fusion, 2023
The quasi-continuous exhaust (QCE) regime, formerly known as either type-II ELM or small ELM regime is studied in ASDEX Upgrade. The regime is a natural type-I ELM-free H-mode.
M. Faitsch, T. Eich, G.F. Harrer, E. Wolfrum, D. Brida, P. David, M. Dunne, L. Gil, B. Labit, U. Stroth, the ASDEX Upgrade Team, the EUROfusion MST1 Team   +11 more
doaj   +2 more sources

The separatrix operational space of next-step fusion experiments: From ASDEX Upgrade data to SPARC scenarios [PDF]

Nuclear Materials and Energy
Fusion power plants require ELM-free, detached operation to prevent divertor damage and erosion. The separatrix operational space (SepOS) is proposed as a tool for identifying access to the type-I ELM-free quasi-continuous exhaust regime.
T. Eich, T. Body, M. Faitsch, O. Grover, M.A. Miller, P. Manz, T. Looby, A.Q. Kuang, A. Redl, M. Reinke, A.J. Creely, D. Battaglia, J. Hillesheim, M. Wigram, J.W. Hughes   +14 more
doaj   +2 more sources

Experimental evidence of magnetic flux pumping in ASDEX upgrade

Nuclear Fusion, 2023
In high- β scenarios with on-axis co-current electron cyclotron current drive, which normally lowers q _0 below unity, the absence of sawteeth suggests the involvement of an additional current redistribution mechanism beyond neoclassical current ...
A. Burckhart, A. Bock, R. Fischer, T. Pütterich, J. Stober, S. Günter, A. Gude, J. Hobirk, M. Hölzl, V. Igochine, I. Krebs, M. Maraschek, M. Reisner, R. Schramm, H. Zohm, the ASDEX Upgrade Team   +15 more
doaj   +2 more sources

Probing non-linear MHD stability of the EDA H-mode in ASDEX Upgrade [PDF]

Nuclear Fusion, 2023
Regimes of operation in tokamaks that are devoid of large edge localised modes have to be better understood to extrapolate their applicability to reactor-relevant devices.
A. Cathey, M. Hoelzl, L. Gil, M.G. Dunne, G.F. Harrer, G.T.A. Huijsmans, J. Kalis, K. Lackner, S.J.P. Pamela, E. Wolfrum, S. Günter, the JOREK Team, the ASDEX Upgrade Team, the EUROfusion MST1 Team   +13 more
doaj   +2 more sources

Analysis of high frequency Alfvén eigenmodes observed in ASDEX Upgrade plasmas in the presence of RF-accelerated NBI ions

Nuclear Fusion, 2023
High frequency Alfvén eigenmodes in the ion cyclotron frequency range are actively researched on the ASDEX Upgrade tokamak (AUG). The general properties of this particular mode type are: ( a ) the mode is beam-driven and, if excited, can persist for the ...
R. Ochoukov, S. Sipilä, R. Bilato, V. Bobkov, M. Dreval, M. Weiland, R. Dendy, H. Faugel, T. Johnson, A. Kappatou, Y. Kazakov, K.G. McClements, D. Moseev, M. Salewski, P. Schneider, ASDEX Upgrade Team, EUROfusion MST1 Team   +16 more
doaj   +2 more sources

Overview of initial negative triangularity plasma studies on the ASDEX Upgrade tokamak

Nuclear 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, T. Pütterich, D. Told, M. Dunne, R. Fischer, J. Hobirk, R.M. McDermott, U. Plank, ASDEX Upgrade Team the   +8 more
doaj   +2 more sources

The X-Point radiating regime at ASDEX Upgrade and TCV

Nuclear Materials and Energy, 2023
Future fusion reactors require a safe, steady-state divertor operation. With deep divertor detachment, which is typically induced by impurity seeding, the radiation concentrates in a small region at the X-point or on closed flux surfaces above the X ...
M. Bernert, S. Wiesen, O. Février, A. Kallenbach, J.T.W. Koenders, B. Sieglin, U. Stroth, T.O.S.J. Bosman, D. Brida, M. Cavedon, P. David, M.G. Dunne, S. Henderson, B. Kool, T. Lunt, R.M. McDermott, O. Pan, A. Perek, H. Reimerdes, U. Sheikh, C. Theiler, M. van Berkel, T. Wijkamp, M. Wischmeier   +23 more
doaj   +2 more sources

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
exaly   +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 ...
H Zohm, A Kallenbach, M Dunne
exaly   +3 more sources

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

Nuclear 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.
O Pan, A Herrmann, M Teschke
exaly   +3 more sources