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The effect of tangential drifts on neoclassical transport in stellarators close to omnigeneity

Abstract:

In general, the orbit-averaged radial magnetic drift of trapped particles in stellarators is non-zero due to the three-dimensional nature of the magnetic field. Stellarators in which the orbit-averaged radial magnetic drift vanishes are called omnigeneous, and they exhibit neoclassical transport levels comparable to those of axisymmetric tokamaks. However, the effect of deviations from omnigeneity cannot be neglected in practice, and it is more deleterious at small collisionalities. For suffi...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1088/1361-6587/aa63ce

Authors


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Department:
Oxford, MPLS, Physics, Theoretical Physics
Velasco, JL More by this author
Alonso, JA More by this author
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Grant:
EUROfusion Consortium, Euratom 633053
Publisher:
IOP Publishing Publisher's website
Journal:
Plasma Physics and Controlled Fusion Journal website
Volume:
59
Issue:
5
Pages:
Article: 055014
Publication date:
2017-03-30
Acceptance date:
2017-03-01
DOI:
ISSN:
1361-6587
Pubs id:
pubs:682535
URN:
uri:c28d628d-d185-429b-b568-a1415e16cfac
UUID:
uuid:c28d628d-d185-429b-b568-a1415e16cfac
Local pid:
pubs:682535

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