Results 11 to 20 of about 744 (275)

Study on divertor detachment and pedestal characteristics in the DIII-D upper closed divertor

Nuclear Fusion, 2023
Experiments performed in DIII-D demonstrate that higher plasma current and heating power combined with impurity seeding facilitate the achievement of divertor detachment with a higher pedestal pressure and higher plasma performance in H-mode plasmas with
H Y Guo, A L Moser, J G Watkins
exaly   +4 more sources

Investigating the role of divertor geometry on density build-up in the island divertor

Nuclear Materials and Energy
The island divertor has been proposed for power and particle exhaust in stellarators. It is investigated in the Wendelstein 7-X (W7-X) experiment. The divertor capabilities such as particle exhaust or radiative power dissipation scale with the divertor ...
F Reimold, V Winters, V Perseo
exaly   +4 more sources

The effect of impurity seeding into the closed divertor on plasma detachment in the HL-2A tokamak

Nuclear Fusion, 2023
Recent progress towards an increased understanding of detached divertor physics has been made with the highly closed divertor geometry in HL-2A. Non-intrinsic impurities were injected into the outer divertor chamber, and increased divertor neutral ...
J.M. Gao, L.Z. Cai, C.Z. Cao, H.C. Ma, R. Ke, N. Wu, Y. Hu, X.Y. Gao, C.H. Cui, Z.H. Huang, L. Nie, L. Liu, Z.C. Yang, X. Yu, Y.G. Li, M. Jiang, G.Q. Xue, W.L. Zhong, T. Wu, Z.B. Shi, L.W. Yan, X.Q. Ji, M. Xu, HL-2A Team   +23 more
doaj   +2 more sources

The ASDEX Upgrade divertor IIb—a closed divertor for strongly shaped plasmas

Nuclear Fusion, 2003
A new divertor configuration (DIV-IIb) has been implemented in ASDEX Upgrade. In order to accommodate a large variety of plasma shapes with bottom triangularities (δbot) up to 0.48, the outer strikepoint region was modified and the roof baffle was ...
Gruber, O., Herrmann, A., Laux, M., Mertens, V., Rohde, V., Haas, G., Yoon, S. W., Pütterich, T., Neu, R., Eich, T., Gafert, J., Kaufmann, M., Neuhauser, J., Yoon, S., ASDEX Upgrade Team, Stober, J., Ryter, F., Maggi, C., Müller, H. W., Fuchs, J. C., Fuchs, J., Müller, H., Kallenbach, A.   +22 more
core   +5 more sources

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
exaly   +3 more sources

Effect of divertor legs on neutral particle and impurity retention for a closed helical divertor configuration in the Large Helical Device

Journal of Nuclear Materials, 2011
A closed helical divertor (CHD) has been designed for efficient particle control in the plasma periphery and for retaining neutral particles and impurity ions in the divertor region.
LHD, Experiment Group, MORISAKI, Tomohiko, SHOJI, Mamoru, MASUZAKI, Suguru, SAKAMOTO, Ryuichi, YAMADA, H.   +5 more
core   +2 more sources

Investigation of the Helical Divertor Function and the Future Plan of a Closed Divertor for Efficient Particle Control in the LHD Plasma Periphery

Fusion Science and Technology, 2009
The function of the divertor plasmas on the particle control in the plasma periphery is investigated from viewpoints of magnetic field line structures and neutral particle transport in the Large Helical Device (LHD).
SAKAUE, A, KOMORI, Akio, IWAMAE, Atsushi, LHD Experiment Group, KOBAYASHI, Masahiro, MORISAKI, Tomohiko, SHOJI, Mamoru, GOTO, Motoshi, MASUZAKI, Suguru, YAMADA, H.   +9 more
core   +2 more sources

Design of a Closed Helical Divertor in LHD and the Prospect for Helical Fusion Reactors

Fusion Science and Technology, 2017
A new closed helical divertor configuration for efficient particle control and reduction of the heat load on the divertor plates is proposed. The closed divertor configuration practically utilizes an ergodic layer and magnetic field line configuration on
YAMADA, Hiroshi, the LHD Experimental Groups,, LHD Experimental Groups,, LHD Experimental Group,, SAGARA, Akio, KOMORI, Akio, KOBAYASHI, Masahiro, SHOJI, Mamoru, MASUZAKI, Suguru, the LHD Experimental Group,   +9 more
core   +2 more sources

Closed Helical Divertor Experiments

Closed Helical Divertor Experiments
departmental bulletin ...
"Morisaki, T., Masuzaki, S., High, Density and Divertor Group"   +2 more
core   +2 more sources

Comparison of 2D simulations of detached divertor plasmas with divertor Thomson measurements in the DIII-D tokamak

Nuclear Materials and Energy, 2017
A modeling study is reported using new 2D data from DIII-D tokamak divertor plasmas and improved 2D transport model that includes large cross-field drifts for the numerically difficult low anomalous transport regime associated with the H-mode.
T.D. Rognlien, A.G. McLean, M.E. Fenstermacher, M. Groth, A.E. Jaervinen, I. Joseph, C.J. Lasnier, W. Meyer, A. Moser, G.D. Porter, M.V. Umansky   +10 more
doaj   +2 more sources