4.4 Article Proceedings Paper

Effect of pressure-driven MHD instabilities on confinement in reactor-relevant high-beta helical plasmas

Journal

PHYSICS OF PLASMAS
Volume 18, Issue 5, Pages -

Publisher

AIP Publishing
DOI: 10.1063/1.3592675

Keywords

-

Funding

  1. Grants-in-Aid for Scientific Research [22360390] Funding Source: KAKEN

Ask authors/readers for more resources

Through the experiment data analysis in the large helical device (LHD), the influence of the global MHD instability and the relatively short wave length MHD instabilities driven turbulence on the confinement performance in reactor-relevant high-beta helical plasmas is studied. The comparison of the energy confinement time between just before global MHD instability disappears and after that, and the estimation of the saturated mode structure by the multi-channel soft x-ray measurement enable us to quantitatively estimate the influence of the global interchange type MHD instability with different saturated mode structures on the confinement performance. According to the comparison between thermal conductivities in experiments and those predicted by theoretical transport models, the transport properties in the peripheral region of high beta LHD plasmas are quite similar with anomalous transport model based on an interchange type MHD instability driven turbulence, and that result is supported by the dependence of the density fluctuation with relatively short wave length on beta value. (C) 2011 American Institute of Physics. [doi:10.1063/1.3592675]

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available