Results 81 to 90 of about 466 (242)

Thermal front analysis of detached divertors and MARFEs [PDF]

Nuclear Fusion, 1994
A non-linear analysis is presented of localized regions of strong divergence of parallel heat flux-thermal fronts-in the edge and scrape-off layers of tokamaks. The phenomena of divertor detachment and MARFEs are discussed in terms of one dimensional thermal conduction in the parallel co-ordinate, but retaining cross-field transport power divergence ...
openaire   +1 more source

Heat Load Mitigation Studies in the W7‐X Stellarator Experiment

Contributions to Plasma Physics, EarlyView.
ABSTRACT During the experiments at the stellarator Wendelstein 7‐X (W7‐X) with fully water‐cooled plasma‐facing components (PFC), including carbon‐fiber composite (CFC) divertor targets with a thermal load capability of 10 MW/m2, high performance was achieved.
Dirk Naujoks, Amit Kharwandikar, Jasper Dettmar, Michael Endler, Joris Fellinger, Yu Gao, Joachim Geiger, Marcin Jakubowski, Thomas Sieber, Sebastian Thiede, Christian Voß, W7‐X Team   +11 more
wiley   +1 more source

Spectroscopic investigation of N and Ne seeded induced detachment in JET ITER-like wall L-modes combining experiment and EDGE2D modeling

Nuclear Materials and Energy, 2019
Modeling and experimental investigation of the distribution of seeded impurities and their influence on divertor detachment in all-metal tokamaks is critical for developing reactor-scale exhaust scenarios. In this work, the degree and operating space for
B. Lomanowski, M. Carr, A. Field, M. Groth, A.E. Jaervinen, C. Lowry, A.G. Meigs, S. Menmuir, M. O'Mullane, M.L. Reinke, C.K. Stavrou, S. Wiesen   +11 more
doaj   +1 more source

First SOLPS‐ITER Simulation Study of Japanese DEMO on Leakage of Seeded Ar Impurity

Contributions to Plasma Physics, EarlyView.
ABSTRACT For JA DEMO, one of the grand challenges is efficiently handling the extreme power loads onto plasma‐facing components, particularly the divertor targets. Impurity seeding is an essential strategy for increasing the radiation losses and thereby reducing the heat load on the targets.
Hang Si, Gakushi Kawamura, Nobuyuki Asakura, Kazuo Hoshino, Haruki Seto, Yoshiteru Sakamoto, Masatoshi Yagi   +6 more
wiley   +1 more source

2D analysis of tokamak divertor-plasma detachment-bifurcation with operational parameters and geometries

Nuclear Materials and Energy
UEDGE simulations with density scans for various input power, transport coefficients and outer poloidal leg length are performed to study the conditions for the existence of a bifurcation-like drop of Te at the outer strike point, commonly referred to as
M. Zhao, F. Scotti, T.D. Rognlien, A.G. McLean, G. Burke, A. Holm   +5 more
doaj   +1 more source

Study of lithium vapor flow in a detached divertor using DSMC code

Nuclear Materials and Energy, 2019
A detached divertor is predicted to be necessary to handle the heat fluxes of a demonstration fusion power plant. The lithium vapor box divertor localizes dense lithium vapor to cause stable detachment.
E.D. Emdee, R.J. Goldston, J.A. Schwartz, M.E. Rensink, T.D. Rognlien   +4 more
doaj   +1 more source

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

Deep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi, Shimin Wang, Chang Liu, Zhiyu Lin, Chuan He   +4 more
wiley   +1 more source

Current convective instability in detached divertor plasma

Physics of Plasmas, 2016
The asymmetry of inner and outer divertors, which cause the inner divertor to detach first, while the outer one is still attached, results in the large temperature difference between the vicinities of inner and outer targets and the onset of large electric potential drop through detached plasma of the inner divertor.
S. I. Krasheninnikov, A. I. Smolyakov
openaire   +2 more sources

Molecular Modification Strategies for CO2 Electroreduction to C2+ Products: Classifications, Mechanisms, Advances, and Perspectives

EcoEnergy, EarlyView.
This review comprehensively outlines molecular modification strategies for steering CO2 electroreduction toward C2+ products, including the classification of diverse molecular structures, elucidation of their roles in microenvironment regulation, dissection of C–C coupling pathway engineering, and forward‐looking perspectives on machine learning and ...
Lingling Peng, Hanwen Liu, Tianyou Peng
wiley   +1 more source

Steady-state burning plasma: a new stage in the development of magnetic confinement fusion energy. [PDF]

Natl Sci Rev, 2023
Wan B, Xu G.
europepmc   +1 more source