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@ARTICLE{Estrada:894124,
author = {Estrada, T. and Maragkoudakis, E. and Carralero, D. and
Windisch, T. and L Velasco, J. and Killer, C. and Andreeva,
T. and Geiger, J. and Dinklage, A. and Krämer-Flecken, A.
and Wurden, G. A. and Beurskens, M. and Bozhenkov, S. and
Damm, H. and Fuchert, G. and Pasch, E.},
title = {{I}mpact of magnetic islands on plasma flow and turbulence
in {W}7-{X}},
journal = {Nuclear fusion},
volume = {61},
issn = {1741-4326},
address = {Vienna},
publisher = {IAEA},
reportid = {FZJ-2021-03051},
pages = {096011},
year = {2021},
abstract = {The effect of magnetic islands on plasma flow and
turbulence has been experimentally investigated in the
stellarator W7-X. Magnetic configurations with the 5/5
magnetic island positioned at the plasma edge, inside the
last closed flux surface, are studied. The main diagnostic
used in the present work is a V-band Doppler reflectometer
that allows the measurement of the perpendicular plasma flow
and density fluctuations with good spatial resolution. A
characteristic signature of the 5/5 magnetic island is
clearly detected in the perpendicular flow profile. The
comparison of the experimental flow and the neoclassically
driven E × B flow indicates that the island contribution to
the flow is maximum at the island boundaries and close to
zero at the island O-point. Besides, a reduction in the
density fluctuation level is found nearby the island
O-point. The similarities between these observations and
those found in other devices and in gyrokinetic simulations
are discussed.},
cin = {IEK-4},
ddc = {620},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000680171700001},
doi = {10.1088/1741-4326/ac146f},
url = {https://juser.fz-juelich.de/record/894124},
}