Abstract
Abstract
Negative triangularity (NT) experiments in DIII-D point to an emergent reactor scenario free of sawteeth, endowed with benign, nondisruptive n = 2 tearing modes, which experience q
min
⩾
1 similar to the positive triangularity hybrid scenario. Plasmas exhibiting this behavior attain
3$?>
β
N
>
3
, high enough to reconsider long held views of NT stability. Ideal MHD and tearing stability analysis of well-diagnosed equilibrium reconstructions of experimental hybrid-like plasmas predict that among shape parameters, MHD stability limits are only sensitive to average triangularity. Operation is predicted to be possible at
β
N
relevant to upcoming tokamaks and commercial NT reactors.
Funder
U.S. Department of Energy
Subject
Condensed Matter Physics,Nuclear and High Energy Physics
Cited by
6 articles.
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