Interpretation of rotation and momentum transport in the DIII-D edge plasma and comparison with neoclassical theory

Stacey, Weston M.; Grierson, Brian A.

doi:10.1088/0029-5515/54/7/073021

Title: Interpretation of rotation and momentum transport in the DIII-D edge plasma and comparison with neoclassical theory

Journal Article · Thu May 08 00:00:00 EDT 2014 · Nuclear Fusion

DOI:https://doi.org/10.1088/0029-5515/54/7/073021· OSTI ID:1376201

Stacey, Weston M. ^[1]; Grierson, Brian A. ^[2]

Georgia Inst. of Technology, Atlanta, GA (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Here, a low-confinement mode discharge which optimizes the capability of the new main-ion chargeexchange-recombination spectroscopy system on DIII-D to measure deuterium toroidal velocity is interpretted in comparison with the predictions of neoclassical theory, with an emphasis on the plasma edge region. The observed peaking in the deuterium toroidal velocity near the separatrix is shown to be consistent with intrinsic co-rotation due to ion orbit loss. In general, the standard neoclassical toroidal and poloidal momentum transport rates are found to be smaller than those inferred from experiment, but a comparison has not yet been made with the more recent extended neoclassical theory that calculates the effects of poloidal asymmetries using an elongated flux surface representation.

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Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FC02-04ER54698

OSTI ID:: 1376201

Journal Information:: Nuclear Fusion, Vol. 54, Issue 7; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 19 works

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References (35)

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Cited By (5)

Improvements to an ion orbit loss calculation in the tokamak edge Wilks, T. M.; Stacey, W. M. Physics of Plasmas, Vol. 23, Issue 12 https://doi.org/10.1063/1.4968219	journal	December 2016
The dependence of ion orbit loss on ion charge and mass Stacey, Weston M. Physics of Plasmas, Vol. 25, Issue 12 https://doi.org/10.1063/1.5048387	journal	December 2018
A Particle-, Momentum-, and Energy-Conserving Fluid Transport Theory for the Tokamak Plasma Edge Stacey, Weston M. Fusion Science and Technology, Vol. 75, Issue 4 https://doi.org/10.1080/15361055.2019.1574529	journal	May 2019
Change in ion orbit loss, intrinsic rotation and particle pinch across the L–H transition in DIII-D plasmas Piper, N. A.; Stacey, W. M.; Groebner, R. J. Plasma Physics and Controlled Fusion, Vol. 61, Issue 5 https://doi.org/10.1088/1361-6587/ab0630	journal	March 2019
Extended fluid transport theory in the tokamak plasma edge Stacey, W. M. Nuclear Fusion, Vol. 57, Issue 6 https://doi.org/10.1088/1741-4326/aa6b34	journal	May 2017

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