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000904049 1001_ $$0P:(DE-Juel1)171363$$aHan, X.$$b0$$eCorresponding author
000904049 245__ $$aApplication of the elliptic approximation model for the edge turbulence rotation measurement via the poloidal correlation reflectometer in Wendelstein 7-X
000904049 260__ $$aVienna$$bIAEA$$c2021
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000904049 520__ $$aThe perpendicular velocity (v⊥) of turbulence is measured by means of a hopping poloidal correlation reflectometer diagnostic for the study of turbulence rotation in the plasma edge region in Wendelstein 7-X. An elliptic approximation (EA) model is applied for calculating the space-time correlation in the edge region. The v⊥ profile is compared in the high-ι (edge ι ≈ 1.2) and limiter (edge ι < 1) configurations. It is found that the v⊥ gradient is inversely proportional to the heating power in the high-ι configuration, which could be attributed to the turbulence activities in the plasma edge. In the limiter configuration, the v⊥ spike is observed near the island boundary, which is corresponded to the plasma current crash. In the standard configuration (edge ι ≈ 1), the v⊥ profile in the island region distributes as a function of the perpendicular separation. With increasing of the plasma current, the island enlarges the size as is referred from the v⊥ scope, accompanying with steepening of the v⊥ gradient at the boundary of the island.
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000904049 7001_ $$0P:(DE-Juel1)130075$$aKrämer-Flecken, A.$$b1
000904049 7001_ $$0P:(DE-Juel1)179595$$aXiang, H. M.$$b2$$ufzj
000904049 7001_ $$0P:(DE-HGF)0$$aVécsei, M.$$b3
000904049 7001_ $$0P:(DE-Juel1)173792$$aKnieps, A.$$b4
000904049 7001_ $$0P:(DE-HGF)0$$aWindisch, T.$$b5
000904049 7001_ $$0P:(DE-HGF)0$$aAnda, G.$$b6
000904049 7001_ $$00000-0003-2390-4240$$aAndreeva, T.$$b7
000904049 7001_ $$00000-0003-4289-3532$$aBozhenkov, S. A.$$b8
000904049 7001_ $$00000-0003-4268-7480$$aGeiger, J.$$b9
000904049 7001_ $$0P:(DE-Juel1)130002$$aDunai, D.$$b10
000904049 7001_ $$00000-0002-6901-8669$$aTrier, E.$$b11
000904049 7001_ $$00000-0002-5550-1801$$aRahbarnia, K.$$b12
000904049 7001_ $$00000-0002-7324-2647$$aZoletnik, S.$$b13
000904049 7001_ $$aLiang, Y.$$b14
000904049 7001_ $$0P:(DE-HGF)0$$aW7-X Team, the$$b15
000904049 773__ $$0PERI:(DE-600)2037980-8$$a10.1088/1741-4326/abfb15$$gVol. 61, no. 6, p. 066029 -$$n6$$p066029 -$$tNuclear fusion$$v61$$x0029-5515$$y2021
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