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000894124 1001_ $$0P:(DE-HGF)0$$aEstrada, T.$$b0
000894124 245__ $$aImpact of magnetic islands on plasma flow and turbulence in W7-X
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000894124 520__ $$aThe effect of magnetic islands on plasma flow and turbulence has been experimentally investigated in the stellarator W7-X. Magnetic configurations with the 5/5 magnetic island positioned at the plasma edge, inside the last closed flux surface, are studied. The main diagnostic used in the present work is a V-band Doppler reflectometer that allows the measurement of the perpendicular plasma flow and density fluctuations with good spatial resolution. A characteristic signature of the 5/5 magnetic island is clearly detected in the perpendicular flow profile. The comparison of the experimental flow and the neoclassically driven E × B flow indicates that the island contribution to the flow is maximum at the island boundaries and close to zero at the island O-point. Besides, a reduction in the density fluctuation level is found nearby the island O-point. The similarities between these observations and those found in other devices and in gyrokinetic simulations are discussed.
000894124 536__ $$0G:(DE-HGF)POF4-134$$a134 - Plasma-Wand-Wechselwirkung (POF4-134)$$cPOF4-134$$fPOF IV$$x0
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000894124 7001_ $$0P:(DE-HGF)0$$aMaragkoudakis, E.$$b1
000894124 7001_ $$0P:(DE-HGF)0$$aCarralero, D.$$b2
000894124 7001_ $$0P:(DE-HGF)0$$aWindisch, T.$$b3
000894124 7001_ $$0P:(DE-HGF)0$$aL Velasco, J.$$b4
000894124 7001_ $$0P:(DE-HGF)0$$aKiller, C.$$b5
000894124 7001_ $$0P:(DE-HGF)0$$aAndreeva, T.$$b6
000894124 7001_ $$0P:(DE-HGF)0$$aGeiger, J.$$b7
000894124 7001_ $$0P:(DE-HGF)0$$aDinklage, A.$$b8
000894124 7001_ $$0P:(DE-Juel1)130075$$aKrämer-Flecken, A.$$b9$$eCorresponding author$$ufzj
000894124 7001_ $$0P:(DE-HGF)0$$aWurden, G. A.$$b10
000894124 7001_ $$0P:(DE-HGF)0$$aBeurskens, M.$$b11
000894124 7001_ $$0P:(DE-HGF)0$$aBozhenkov, S.$$b12
000894124 7001_ $$0P:(DE-HGF)0$$aDamm, H.$$b13
000894124 7001_ $$0P:(DE-HGF)0$$aFuchert, G.$$b14
000894124 7001_ $$0P:(DE-HGF)0$$aPasch, E.$$b15
000894124 773__ $$0PERI:(DE-600)2037980-8$$a10.1088/1741-4326/ac146f$$p096011$$tNuclear fusion$$v61$$x1741-4326$$y2021
000894124 8564_ $$uhttps://juser.fz-juelich.de/record/894124/files/Estrada_2021_Nucl._Fusion_61_096011.pdf$$yRestricted
000894124 8564_ $$uhttps://juser.fz-juelich.de/record/894124/files/postprint%20kraemer-flecken.pdf$$yPublished on 2021-07-29. Available in OpenAccess from 2022-07-29.
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