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MHD Stability Calculations of High-Beta Quasi-Axisymmetric Stellarators

Technical Report ·
DOI:https://doi.org/10.2172/12170· OSTI ID:12170

The MHD stability of quasi-axisymmetric compact stellarators is investigated. It is shown that bootstrap current driven external kink modes can be stabilized by a combination of edge magnetic shear and appropriate 3D plasma boundary shaping while maintaining good quasi-axisymmetry. The results demonstrate that there exists a new class of stellarators with quasi-axisymmetry, large bootstrap current, high MHD beta limit, and compact size.

Research Organization:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC02-76CH03073
OSTI ID:
12170
Report Number(s):
PPPL-3357; AC02-CHO-3073
Country of Publication:
United States
Language:
English