000862507 001__ 862507 000862507 005__ 20240711113741.0 000862507 0247_ $$2doi$$a10.1088/1741-4326/ab0d29 000862507 0247_ $$2ISSN$$a0029-5515 000862507 0247_ $$2ISSN$$a1741-4326 000862507 0247_ $$2WOS$$aWOS:000465976300001 000862507 0247_ $$2altmetric$$aaltmetric:59441911 000862507 037__ $$aFZJ-2019-02811 000862507 082__ $$a620 000862507 1001_ $$00000-0002-7298-0680$$aLiu, S. C.$$b0 000862507 245__ $$aThe effects of magnetic topology on the scrape-off layer turbulence transport in the first divertor plasma operation of Wendelstein 7-X using a new combined probe 000862507 260__ $$aVienna$$bIAEA$$c2019 000862507 3367_ $$2DRIVER$$aarticle 000862507 3367_ $$2DataCite$$aOutput Types/Journal article 000862507 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1556276515_18013 000862507 3367_ $$2BibTeX$$aARTICLE 000862507 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000862507 3367_ $$00$$2EndNote$$aJournal Article 000862507 520__ $$aWendelstein 7-X (W7-X) was operated successfully with the first divertor plasma in the operation phase 1.2a (OP1.2a). A new combined probe head, developed and installed on the multiple-purpose manipulator, is able to measure the edge plasma profiles (), variation of magnetic field, poloidal and radial turbulence structures. The scrape-off layer (SOL) plasma parameters in two magnetic configurations (standard and high mirror) are in good agreement with the magnetic island structure and the field line connection length calculated by the field line tracer. In both the standard and high mirror configurations, the radial turbulent heat flux and particle flux have strong dependence on the local magnetic topology, revealing two distinct transport patterns: a broadband turbulence dominant region in the outer SOL and a low frequency dominant region in the inner SOL. In the standard divertor configuration, the broadband turbulence with a frequency range of 40–120 kHz is located near the island center along the probe path, leading to outward transport. These broadband fluctuations propagate with a velocity of 2.3–4.4 km s−1 poloidally along the ion diamagnetic drift direction in the plasma frame, with close to 0.1. The large radial transport induced by the broadband turbulence is accompanied by a steep electron density gradient. The low frequency (5–30 kHz) dominant transport exhibits obvious intermittent structure. Some statistical techniques are applied to the characterization of the intermittent transport. 000862507 536__ $$0G:(DE-HGF)POF3-174$$a174 - Plasma-Wall-Interaction (POF3-174)$$cPOF3-174$$fPOF III$$x0 000862507 588__ $$aDataset connected to CrossRef 000862507 7001_ $$0P:(DE-Juel1)168271$$aLiang, Y.$$b1$$eCorresponding author 000862507 7001_ $$0P:(DE-Juel1)162257$$aDrews, P.$$b2 000862507 7001_ $$0P:(DE-HGF)0$$aKiller, C.$$b3 000862507 7001_ $$0P:(DE-Juel1)173792$$aKnieps, A.$$b4 000862507 7001_ $$0P:(DE-HGF)0$$aXu, G. S.$$b5 000862507 7001_ $$0P:(DE-HGF)0$$aWang, H. Q.$$b6 000862507 7001_ $$00000-0002-2536-5853$$aYan, N.$$b7 000862507 7001_ $$0P:(DE-Juel1)171363$$aHan, X.$$b8 000862507 7001_ $$0P:(DE-Juel1)166541$$aHöschen, D.$$b9 000862507 7001_ $$0P:(DE-Juel1)130075$$aKrämer-Flecken, A.$$b10 000862507 7001_ $$0P:(DE-Juel1)130112$$aNicolai, D.$$b11 000862507 7001_ $$0P:(DE-Juel1)130135$$aSatheeswaran, G.$$b12 000862507 7001_ $$0P:(DE-HGF)0$$aHammond, K.$$b13 000862507 7001_ $$0P:(DE-Juel1)171371$$aCai, J. 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