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SUMMARY:Dynamics of turbulent structures in the plasma edge
DTSTART:20150909T103000
DTEND:20150909T113000
DTSTAMP:20260930T033722Z
UID:566b2cdc628b39799a9abfe00f1f4c2483079847e843de4464571b42
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Olaf Grulke\, MPI for Plasma Physics\, Greifswald\, D\nIt 
 is well known that the turbulent fluctuations in the edge of magnetically 
 confined plasmas contribute considerably to the cross-field transport by t
 he convection of particles and heat within the turbulent potential field. 
 Over the last decade improved spatiotemporal diagnostics revealed a more c
 omprehensive picture of the transport\, i.e. the existence of radially pro
 pagating intermittent transport events\, commonly called blob-filaments\, 
 which are routinely observed in the scrape-off layer of tokamaks and have 
 been shown to even dominate the convective perpendicular particle transpor
 t. These events have attracted great interest\, both experimental and theo
 retical\, since they impact key issues as\, e.g.\, scrape-off layer width\
 , wall-recycling\, and divertor heat load. Although common models for radi
 al blob-filament propagation are based on magnetic field curvature a simil
 ar structure dynamics is also observed in linear magnetic geometry. This t
 alk reviews the findings about structure propagation features in both magn
 etic field configurations based on results obtained in the Alcator C-Mod t
 okamak and the linear plasma device VINETA.
LOCATION:PPB 019
STATUS:CONFIRMED
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