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3D effects of edge magnetic field configuration on divertor/scrape-off layer transport and optimization possibilities for a future reactor

Authors :
KOBAYASHI, Masahiro
Xu, Y.
IDA, Katsumi
Corre, Y.
Feng, Y.
Schmitz, O.
Frerichs, H.
Tabares, F.L.
Evans, T.E.
Coenen, J.W.
Liang, Y.
Bader, A.
ITOH, Kimitaka
YAMADA, Hiroshi
Ghendrih, Ph.
Ciraolo, G.
Tafalla, D.
Lopez-Fraguas, A.
Guo, H.Y.
Cui, Z.Y.
Reiter, D.
Asakura, N.
Wenzel, U.
MORITA, Shigeru
OHNO, Noriyasu
Peterson, B. J.
MASUZAKI, Suguru
KOBAYASHI, Masahiro
Xu, Y.
IDA, Katsumi
Corre, Y.
Feng, Y.
Schmitz, O.
Frerichs, H.
Tabares, F.L.
Evans, T.E.
Coenen, J.W.
Liang, Y.
Bader, A.
ITOH, Kimitaka
YAMADA, Hiroshi
Ghendrih, Ph.
Ciraolo, G.
Tafalla, D.
Lopez-Fraguas, A.
Guo, H.Y.
Cui, Z.Y.
Reiter, D.
Asakura, N.
Wenzel, U.
MORITA, Shigeru
OHNO, Noriyasu
Peterson, B. J.
MASUZAKI, Suguru
Publication Year :
2021

Abstract

This paper assesses the three-dimensional (3D) effects of the edge magnetic field structure on divertor/scrape-off layer transport, based on an inter-machine comparison of experimental data and on the recent progress of 3D edge transport simulation. The 3D effects are elucidated as a consequence of competition between transports parallel ($\parallel $ ) and perpendicular ($\bot $ ) to the magnetic field, in open field lines cut by divertor plates, or in magnetic islands. The competition has strong impacts on divertor functions, such as determination of the divertor density regime, impurity screening and detachment control. The effects of magnetic perturbation on the edge electric field and turbulent transport are also discussed. Parameterization to measure the 3D effects on the edge transport is attempted for the individual divertor functions. Based on the suggested key parameters, an operation domain of the 3D divertor configuration is discussed for future devices.<br />source:M. Kobayashi et al 2015 Nucl. Fusion 55 104021<br />source:https://doi.org/10.1088/0029-5515/55/10/104021

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1375198562
Document Type :
Electronic Resource