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Scaling of up-down asymmetric turbulent momentum flux with poloidal shaping mode number in tokamaks

Abstract:

Breaking the up-down symmetry of tokamaks removes a constraint limiting intrinsic momentum transport, and hence toroidal rotation, to be small. Using gyrokinetic theory, we study the effect of different up-down asymmetric flux surface shapes on the turbulent transport of momentum. This is done by perturbatively expanding the gyrokinetic equation in large flux surface shaping mode number. It is found that the momentum flux generated by shaping that lacks mirror symmetry (which is necessarily u...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/0741-3335/58/5/055016

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
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Name:
Research Councils UK
Grant:
EP/I501045
More from this funder
Name:
Engineering and Physical Sciences Research Council
Grant:
EP/L000237/1
Publisher:
IOP Publishing
Journal:
Plasma Physics and Controlled Fusion More from this journal
Volume:
58
Issue:
5
Article number:
055016
Publication date:
2016-03-01
Acceptance date:
2016-03-07
DOI:
ISSN:
1361-6587
Pubs id:
pubs:608817
UUID:
uuid:f29681db-4408-45ce-a92d-bca06006d499
Local pid:
pubs:608817
Source identifiers:
608817
Deposit date:
2016-03-08

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