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Title: Accessibility of second regions of stability in tokamaks

Technical Report ·
DOI:https://doi.org/10.2172/6414869· OSTI ID:6414869

Second regions of stability to the ideal ballooning modes have been shown to exist in large-aspect-ratio circular and small-aspect-ratio bean-shaped tokamaks. We report on the existence of these second stability regions in finite-aspect-ratio dee-shaped tokamaks. We also report on the discovery of a second-stable region with respect to the n = 1 external kink mode in a bean-shaped plasma. The role of the shear and current profile in determining these regions of parameter space are discussed. 13 refs., 6 figs.

Research Organization:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
DOE Contract Number:
AC02-76CH03073
OSTI ID:
6414869
Report Number(s):
PPPL-2291; ON: DE86005043
Country of Publication:
United States
Language:
English