Simulation Study on Nonlocal Transport for Peripheral Density Source

Simulation Study on Nonlocal Transport for Peripheral Density Source

The simulation study of nonlocal transport for peripheral density source is performed using the 4-field reduced MHD model. A spherical density source is applied in the plasma edge, after saturation of the resistive ballooning turbulence is attained. After a while, the source is switched off. It is f...

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Veröffentlicht in:Plasma and Fusion Research 2014/04/07, Vol.9, pp.3403030-3403030
Hauptverfasser: YAGI, Masatoshi, MIYATO, Naoaki, MATSUYAMA, Akinobu, TAKIZUKA, Tomonori
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edge and core coupling
nonlocal transport
toroidal coupling
transient plasma response
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container_start_page 3403030
container_title Plasma and Fusion Research
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creator YAGI, Masatoshi
MIYATO, Naoaki
MATSUYAMA, Akinobu
TAKIZUKA, Tomonori
description The simulation study of nonlocal transport for peripheral density source is performed using the 4-field reduced MHD model. A spherical density source is applied in the plasma edge, after saturation of the resistive ballooning turbulence is attained. After a while, the source is switched off. It is found that the nonlocal transport appears at the location far from the edge source, which induces not only (0,0) and (±1,0) modes but also finite n modes, where (m, n) indicates the set of poloidal mode number m and the toroidal mode number n. These modes interact with each other by the nonlinear and/or toroidal couplings. After switching-on the source, the formation of the spiral structure with poloidal rotation is observed, which yields a connection between core and edge regions. The simulation result indicates that 2D transport plays an essential role to the transient plasma response.
doi_str_mv 10.1585/pfr.9.3403030
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subjects edge and core coupling
nonlocal transport
toroidal coupling
transient plasma response
title Simulation Study on Nonlocal Transport for Peripheral Density Source
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