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Title: Impact of centrifugal drifts on ion turbulent transport

Here, the influence of sonic toroidal rotation on gyrokinetic stability and transport is studied, with important implications for heavy impurity dynamics. When centrifugal drifts and electrostatic trapping corrections are included, significant modifications to the calculated transport of heavy impurities are observed. These high-rotation corrections add to the standard Coriolis drift and toroidal rotation shear drive which are normally included in gyrokinetics. Yet, because of their complexity, centrifugal and electrostatic trapping terms (quadratic in the main ion Mach number) are not generally included in gyrokinetic codes. In this work, we explore the implications of using reduced descriptions of the rotational physics. For heavy impurities such as tungsten, cross terms due to the centrifugal force can dominate the rotation dynamics, and neglecting them is shown to lead to large errors in the impurity particle flux.
Authors:
ORCiD logo [1] ; ORCiD logo [1]
  1. General Atomics, San Diego, CA (United States)
Publication Date:
Grant/Contract Number:
FG02-95ER54309; FC02-06ER54873
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 3; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
General Atomics, San Diego, CA (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1438439
Alternate Identifier(s):
OSTI ID: 1423400

Belli, Emily A., and Candy, J.. Impact of centrifugal drifts on ion turbulent transport. United States: N. p., Web. doi:10.1063/1.5020298.
Belli, Emily A., & Candy, J.. Impact of centrifugal drifts on ion turbulent transport. United States. doi:10.1063/1.5020298.
Belli, Emily A., and Candy, J.. 2018. "Impact of centrifugal drifts on ion turbulent transport". United States. doi:10.1063/1.5020298.
@article{osti_1438439,
title = {Impact of centrifugal drifts on ion turbulent transport},
author = {Belli, Emily A. and Candy, J.},
abstractNote = {Here, the influence of sonic toroidal rotation on gyrokinetic stability and transport is studied, with important implications for heavy impurity dynamics. When centrifugal drifts and electrostatic trapping corrections are included, significant modifications to the calculated transport of heavy impurities are observed. These high-rotation corrections add to the standard Coriolis drift and toroidal rotation shear drive which are normally included in gyrokinetics. Yet, because of their complexity, centrifugal and electrostatic trapping terms (quadratic in the main ion Mach number) are not generally included in gyrokinetic codes. In this work, we explore the implications of using reduced descriptions of the rotational physics. For heavy impurities such as tungsten, cross terms due to the centrifugal force can dominate the rotation dynamics, and neglecting them is shown to lead to large errors in the impurity particle flux.},
doi = {10.1063/1.5020298},
journal = {Physics of Plasmas},
number = 3,
volume = 25,
place = {United States},
year = {2018},
month = {3}
}