Parasitic momentum flux in the tokamak core

Stoltzfus-Dueck, T.

doi:10.1063/1.4977458

Parasitic momentum flux in the tokamak core

Journal Article · Mon Mar 06 00:00:00 EST 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4977458· OSTI ID:1373094

Stoltzfus-Dueck, T. ^[1]

Princeton Univ., NJ (United States)

A geometrical correction to the E × B drift causes an outward flux of co-current momentum whenever electrostatic potential energy is transferred to ion parallel flows. The robust, fully nonlinear symmetry breaking follows from the free-energy flow in phase space and does not depend on any assumed linear eigenmode structure. The resulting rotation peaking is counter-current and scales as temperature over plasma current. Lastly, this peaking mechanism can only act when fluctuations are low-frequency enough to excite ion parallel flows, which may explain some recent experimental observations related to rotation reversals.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC)

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1373094

Alternate ID(s):: OSTI ID: 1349366

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 24; ISSN PHPAEN; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Global gyrokinetic simulations of intrinsic rotation in ASDEX Upgrade Ohmic L-mode plasmas Hornsby, W. A.; Angioni, C.; Lu, Z. X. Nuclear Fusion, Vol. 58, Issue 5 https://doi.org/10.1088/1741-4326/aab22f	journal	March 2018
DIII-D shaping demonstrates correlation of intrinsic momentum with energy deGrassie, J. S.; Rhodes, T. L.; Osborne, T. H. Nuclear Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1741-4326/ab2bb0	journal	July 2019

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