Results 1 to 10 of about 100,982 (265)

Impact of drifts on divertor power exhaust in DIII-D

Nuclear Materials and Energy, 2019
Radiative divertor experiments and 2D fluid simulations show strong impact of cross-field drifts on the low field side (LFS) divertor target heat flux and volumetric radiation profiles when evolving to detached conditions in DIII-D high confinement mode (
A.E. Jaervinen, S.L. Allen, D. Eldon, M.E. Fenstermacher, M. Groth, D.N. Hill, C.J. Lasnier, A.W. Leonard, A.G. McLean, G.D. Porter, T.D. Rognlien, C.M. Samuell, H.Q. Wang, J.G. Watkins   +13 more
doaj   +1 more source

Investigation of the particle accumulation effects on the power exhaust of snowflake minus divertor on HL-2M tokamak by SOLPS-ITER

Nuclear Materials and Energy, 2020
To solve the power exhaust handling challenge, meanwhile maintaining acceptable divertor target erosion, the snowflake divertor (SFD) is proposed on HL-2M tokamak. In this work, simulations are carried out by using scrape-off layer plasma simulation code
Yanjie Zhang, Chaofeng Sang, Jiaxian Li, Guoyao Zheng, Chen Zhang, Daoyuan Liu, Dezhen Wang   +6 more
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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

Understanding detachment of the W7-X island divertor

Nuclear Fusion, 2021
Abstract The fundamental behavior of the W7-X island divertor under detached conditions, which has been theoretically predicted with the EMC3-Eirene code, is re-examined here under the experimental conditions achieved so far and compared with the first experimental results.
W7-X Team, Feng, Y., Jakubowski, M., König, R., Krychowiak, M., Otte, M., Reimold, F., Reiter, D., Schmitz, O., Zhang, D., Beidler, C. D., Biedermann, C., Bozhenkov, S., Brunner, K. J., Dinklage, A., Drewelow, P., Effenberg, F., Endler, M., Fuchert, G., Gao, Y., Geiger, J., Hammond, K. C., Helander, P., Killer, C., Knauer, J., Kremeyer, T., Pasch, E., Rudischhauser, L., Schlisio, G., Sunn Pedersen, T., Wenzel, U., Winters, V., Gantenbein, Gerd, Huber, Martina, Illy, Stefan, Jelonnek, John, Kobarg, Thorsten, Lang, Rouven, Leonhardt, Wolfgang, Mellein, Daniel, Papenfuß, Daniel, Scherer, Theo, Thumm, Manfred, Wadle, Simone, Weggen, Jörg   +44 more
openaire   +4 more sources

Facilitated core-edge integration through divertor nitrogen seeding in the HL-2A tokamak

Nuclear Fusion
A divertor detachment with sustainable high-performance plasmas has been achieved through divertor nitrogen seeding in the HL-2A tokamak. The closed divertor structure facilitates achieving high divertor neutral pressure due to its efficient particle ...
N. Wu, J. Cheng, K.Y. Yi, R. Wang, M.K. Han, Z.H. Huang, W.C. Wang, Y. He, L.W. Yan, H.L. Du, J.M. Gao, H.C. Ma, X.X. He, Z.C. Yang, J. Wen, K. Zhang, T. Wu, W.P. Guo, X. Yu, L. Liu, Y.G. Li, L. Nie, Z.B. Shi, D.Z. Wang, W.L. Zhong   +24 more
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An assessment of nitrogen concentrations from spectroscopic measurements in the JET and ASDEX upgrade divertor

Nuclear Materials and Energy, 2019
The impurity concentration in the tokamak divertor plasma is a necessary input for predictive scaling of divertor detachment, however direct measurements from existing tokamaks in different divertor plasma conditions are limited. To address this, we have
S.S. Henderson, M. Bernert, S. Brezinsek, M. Carr, M. Cavedon, R. Dux, D.S. Gahle, J. Harrison, A. Kallenbach, B. Lipschultz, B. Lomanowski, A. Meigs, M. O’Mullane, F. Reimold, M.L. Reinke, S. Wiesen   +15 more
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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

The effect of neutrals in the new SAS divertor at DIII-D as modelled by SOLPS

Nuclear Materials and Energy, 2019
SOLPS5.1 modelling of first detachment experiments carried out in the new Small Angle Slot (SAS) divertor recently installed at DIII-D has indicated a significant reduction in Te at the strike point compared to a matched open divertor case for a given ...
L. Casali, B.M. Covele, H.Y. Guo
doaj   +1 more source

Predictive modeling of a lithium vapor box divertor in NSTX-U using SOLPS-ITER

Nuclear Materials and Energy, 2021
The unmitigated heat flux in attached operation of a fusion power plant is predicted to be destructive to any solid divertor surface. Detachment, whereby the plasma pressure drops significantly before reaching the divertor target thus greatly reducing ...
E.D. Emdee, R.J. Goldston, J.D Lore, X. Zhang   +3 more
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Neutral pressure and separatrix density related models for seed impurity divertor radiation in ASDEX Upgrade

Nuclear Materials and Energy, 2019
Analytical expressions for the divertor radiation around the onset of detachment based on the divertor neutral pressure and the upstream separatrix density are tested against measurements on strongly nitrogen seeded high confinement mode (H-mode ...
A. Kallenbach, M. Bernert, R. Dux, T. Eich, S.S. Henderson, T. Pütterich, F. Reimold, V. Rohde, H.J. Sun   +8 more
doaj   +1 more source