000200372 001__ 200372
000200372 005__ 20190316235945.0
000200372 0247_ $$2doi$$a10.1088/0029-5515/54/8/083033
000200372 022__ $$a1741-4326
000200372 02470 $$2ISI$$a000339991600037
000200372 037__ $$aARTICLE
000200372 245__ $$aEffect of the limiter position on the scrape-off layer width, radial electric field and intrinsic flows
000200372 269__ $$a2014
000200372 260__ $$aBristol$$bIop Publishing Ltd$$c2014
000200372 300__ $$a11
000200372 336__ $$aJournal Articles
000200372 520__ $$aThe effect of the limiter position on the scrape-off layer (SOL) width, radial electric field and intrinsic flows is investigated via global, three-dimensional turbulence simulations in four different limiter configurations. The limiter position affects the SOL dynamics in a number of ways, for example by changing the effective connection length or by modifying the unstable modes present in the system. The simulations show that the SOL width is much smaller and less poloidally asymmetric when the plasma is limited on the low-field side than on the high-field side, which can be explained by a change in the turbulence regime between the two configurations. The radial electric field is determined by the combined effect of the sheath physics and the electron adiabaticity condition, and its poloidal structure depends on the limiter position, as it can be fairly well explained through an analytical model. Intrinsic parallel flows established in the SOL, typically leading to co-current toroidal rotation with a magnitude that strongly depends on the limiter position, can also be fairly well reproduced analytically for each limiter configuration.
000200372 6531_ $$aCRPP_EDGE
000200372 700__ $$aLoizu, J.
000200372 700__ $$aRicci, P.
000200372 700__ $$aHalpern, F. D.
000200372 700__ $$aJolliet, S.
000200372 700__ $$aMosetto, A.
000200372 773__ $$j54$$k8$$q083033$$tNuclear Fusion
000200372 8564_ $$s1682152$$uhttps://infoscience.epfl.ch/record/200372/files/Loizu0029-5515_54_8_083033.pdf$$yn/a$$zn/a
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000200372 909CO $$ooai:infoscience.tind.io:200372$$pSB$$particle$$qGLOBAL_SET
000200372 917Z8 $$x176621
000200372 937__ $$aEPFL-ARTICLE-200372
000200372 973__ $$aEPFL$$rNON-REVIEWED$$sPUBLISHED
000200372 980__ $$aARTICLE