Results 11 to 20 of about 447 (244)

The effect of divertor closure on detachment onset in DIII-D

Nuclear Materials and Energy, 2019
Experiments at DIII-D use different divertor geometries to measure the effect of divertor closure on detachment onset. We compare matched H-mode discharges in the closed (upper) divertor and the open (lower) divertor and use as a detachment onset metric ...
A.L. Moser, A.W. Leonard, A.G. McLean, H.Q. Wang, J.G. Watkins   +4 more
doaj   +1 more source

Evaluation of ITER divertor shunts as a synthetic diagnostic for detachment control

Nuclear Fusion, 2023
Reliable diagnostics that measure the detached state of the ITER divertor plasma will be necessary to control heat flux to the divertor targets during steady state, burning plasma operation. This paper conducts an initial exploration into the feasibility
C.A. Orrico, T. Ravensbergen, R.A. Pitts, X. Bonnin, E. Kaveeva, J.S. Park, V. Rozhansky, I. Senichenkov, C. Watts, M. de Baar   +9 more
doaj   +1 more source

Plasma pressure and flows during divertor detachment [PDF]

Journal of Nuclear Materials, 1999
Abstract MHD theory applied to tokamak plasma scrape-off layer (SOL) equilibria requires Pfirsch–Schluter current, which, because the magnetic lines are open, normally closes through electrically conducting divertor or limiter components. During detached divertor operation the Pfirsch–Schluter current path to the divertor target is sometimes blocked,
M.J. Schaffer, J.A. Boedo, R.A. Moyer
openaire   +1 more source

Optimizing detachment control using the magnetic configuration of divertors [PDF]

Nuclear Fusion, 2022
Abstract As tokamak research moves to reactor conditions, the control of a stable, optimally-detached divertor plasma has become increasingly relevant. Simple predictions of such detachment control have been performed previously using the detachment location sensitivity (DLS) model (Lipschultz et al 2016 Nucl.
C. Cowley, B. Lipschultz, D. Moulton, B. Dudson   +3 more
openaire   +2 more sources

Dependence of neutral pressure on detachment in the small angle slot divertor at DIII-D

Nuclear Materials and Energy, 2019
Local neutral pressure measurements in the closed small angle slot (SAS) divertor [1,2] on DIII-D show a large increase when the divertor plasma shifts from high recycling into detachment. In-tile pressure gauges were installed to measure the pressure in
M.W. Shafer, B. Covele, J.M. Canik, L. Casali, H.Y. Guo, A.W. Leonard, J.D. Lore, A.G. McLean, A.L. Moser, P.C. Stangeby, D. Taussig, H.Q. Wang, J.G. Watkins   +12 more
doaj   +1 more source

Modeling of argon seeding in ASDEX Upgrade H-mode plasma with SOLPS5.0

Nuclear Materials and Energy, 2017
SOLPS modeling of Ar seeding in ASDEX Upgrade H-mode plasma shows that the divertor compression of Ar increases with the seeding rate when the inner divertor is detached and the outer divertor is attached.
L.Y. Xiang, M. Wischmeier, D. Coster, M. Bernert, H.Y. Guo, G.N. Luo, ASDEX Upgrade team   +6 more
doaj   +1 more source

Sustained radiative divertor in high-performance grassy-ELM regime with metal wall towards long-pulse operation in EAST

Nuclear Materials and Energy, 2021
Simultaneous control of transient heat load induced by large-amplitude edge-localized modes (ELMs) and steady-state heat load on divertor targets under metal wall environment is crucial for steady-state operation of future tokamak fusion reactors, such ...
K.D. Li, G.S. Xu, Q.P. Yuan, L. Wang, Z.S. Yang, J.B. Liu, Q.Q. Yang, K. Wu, Y.M. Duan, J.C. Xu, L.Y. Meng, H.Q. Wang, H.Y. Guo, F. Ding, M.W. Chen, L. Zhang, N. Yan, Y.Q. Tao, E.Z. Li, L. Zeng, B. Zhang, X.Z. Gong, B.J. Xiao, G.N. Luo, B.N. Wan   +24 more
doaj   +1 more source

Energy and particle balance during plasma detachment in a long-leg divertor configuration

Nuclear Fusion, 2023
Comprehensive studies of energy and particle balances in the transition to plasma detachment in an alternative divertor configuration with long outer legs are shown.
R. Masline, S.I. Krasheninnikov
doaj   +1 more source

Spectroscopic investigations of divertor detachment in TCV [PDF]

Nuclear Materials and Energy, 2017
The aim of this work is to provide an understanding of detachment at TCV with emphasis on analysis of the Balmer line emission. A new Divertor Spectroscopy System has been developed for this purpose. Further development of Balmer line analysis techniques has allowed detailed information to be extracted from the three-body recombination contribution to ...
Verhaegh, K., Lipschultz, B., Duval, B. P., Harrison, J. R., Reimerdes, H., Theiler, C., Labit, B., Maurizio, R., Marini, C., Nespoli, F., Sheikh, U., Tsui, C. K., Vianello, N., Vijvers, W. A. J., team, TCV, team, MST1   +15 more
openaire   +6 more sources

Argon–seeded detachment during ELM control by RMPs in KSTAR

Nuclear Fusion, 2023
In this study, we demonstrate argon-seeded discharges that exhibited a detached divertor during the full suppression and mitigation of edge-localized modes (ELMs) by an International Thermonuclear Experimental Reactor-like, three-row resonant magnetic ...
H. Shin, J. Hwang, Y. Han, G. Shin, H. Lee, K.-B. Chai, Wonho Choe   +6 more
doaj   +1 more source