Equilibrium and convective stability of a plasma with interlinked toroidal and weak poloidal magnetic fields

Details Equilibrium and convective stability of a plasma with interlinked toroidal and weak poloidal magnetic fields Equilibrium and convective stability of a plasma with interlinked toroidal and weak poloidal magnetic fields

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.s1044r&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #S1.044

Physics

Scientific paper

This study is related to the physics of a snowflake divertor [1]. One of its features is a large size of the zone of a very weak poloidal magnetic field in the divertor area. In this zone, the poloidal plasma beta (defined as a ratio of the plasma pressure to the pressure of a poloidal magnetic field) significantly exceeds unity. This brings up some interesting new features to the equilibrium and convective stability of the divertor plasma. It has recently been suggested [2] that convective instability can spread the heat over a larger area than normally assumed and ``activate'' all four divertor legs of a snowflake divertor, thereby significantly reducing the divertor heat load, especially during the ELM events. A quantitative analysis of the convective instability and/or loss of equilibrium at high poloidal betas will be presented and related to the heat flux reduction for a simplified geometry. Experimentally detectable signatures of plasma convection in the divertor zone will be considered. Work performed for U.S. DoE by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344[4pt] [1] D.D. Ryutov, Phys. Plas., 14, 064502, 2007;[0pt] [2] D.D. Ryutov et al., Contrib. Plasma Phys., to be published, 2012.

Affiliated with

Also associated with

No associations

Rating

Equilibrium and convective stability of a plasma with interlinked toroidal and weak poloidal magnetic fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Equilibrium and convective stability of a plasma with interlinked toroidal and weak poloidal magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equilibrium and convective stability of a plasma with interlinked toroidal and weak poloidal magnetic fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1368262