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Title: Drift Mode Calculations in Nonaxisymmetric Geometry

Abstract

A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order ''ballooning representation'' for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.

Authors:
; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
9115
Report Number(s):
PPPL-3354; DE-AC02-76CHO3073
DE-AC02-76CHO3073; TRN: US0102749
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jul 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; STELLARATORS; DRIFT INSTABILITY; DESIGN; ELECTROSTATICS; GEOMETRY; KINETICS; MAGNETOHYDRODYNAMICS; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Rewoldt, G, Ku, L -P, Cooper, W A, and Tang, W M. Drift Mode Calculations in Nonaxisymmetric Geometry. United States: N. p., 1999. Web. doi:10.2172/9115.
Rewoldt, G, Ku, L -P, Cooper, W A, & Tang, W M. Drift Mode Calculations in Nonaxisymmetric Geometry. United States. https://doi.org/10.2172/9115
Rewoldt, G, Ku, L -P, Cooper, W A, and Tang, W M. 1999. "Drift Mode Calculations in Nonaxisymmetric Geometry". United States. https://doi.org/10.2172/9115. https://www.osti.gov/servlets/purl/9115.
@article{osti_9115,
title = {Drift Mode Calculations in Nonaxisymmetric Geometry},
author = {Rewoldt, G and Ku, L -P and Cooper, W A and Tang, W M},
abstractNote = {A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order ''ballooning representation'' for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.},
doi = {10.2172/9115},
url = {https://www.osti.gov/biblio/9115}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 1999},
month = {Thu Jul 01 00:00:00 EDT 1999}
}