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A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear.

Abstract:

New transport experiments on JET indicate that ion stiffness mitigation in the core of a rotating plasma, as described by Mantica et al. [Phys. Rev. Lett. 102, 175002 (2009)] results from the combined effect of high rotational shear and low magnetic shear. The observations have important implications for the understanding of improved ion core confinement in advanced tokamak scenarios. Simulations using quasilinear fluid and gyrofluid models show features of stiffness mitigation, while nonline...

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Publication status:
Published

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Journal:
Physical review letters
Volume:
107
Issue:
13
Pages:
135004
Publication date:
2011-09-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:e9b23c43-333b-444e-b63b-8f6e08197f8f
Source identifiers:
431119
Local pid:
pubs:431119
Language:
English

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