Now showing items 1-10 of 42
A neoclassical model for toroidal rotation and the radial electric field in the edge pedestal
(Georgia Institute of Technology, 2004-06)
A model for the calculation of toroidal rotation velocities and the radial electric field in the edge pedestal of tokamaks is described. The model is based on particle and momentum balance and the use of the neoclassical ...
Interpretation of particle pinches and diffusion coefficients in the edge pedestal of DIII-D H-mode plasmas
(Georgia Institute of Technology, 2009-10-15)
A procedure is described for evaluating particle pinches to be used in interpreting particle diffusion coefficients from measured density and temperature profiles in the edge pedestal of tokamak plasmas. Application to the ...
Investigation of background edge thermal transport in ELMing and ELM-suppressed H-modes in DIII-D
(Georgia Institute of Technology, 2006-11-17)
Thermal diffusivities are inferred in the plasma edge of a matched pair of DIII-D [J. Luxon, Nucl. Fusion 42, 614 (2002)] high confinement mode discharges, one with edge localized modes (ELMs) present and the other with ...
Thermal transport analysis of the edge region in the low and high confinement stages of a DIII-D discharge
(Georgia Institute of Technology, 2007-01-04)
The ion and electron thermal diffusivities have been inferred from measured density and temperature profiles in the edge of a DIII-D [ J. Luxon, Nucl. Fusion 42, 614 (2002) ] discharge with a low confinement (L-mode) stage ...
Interpretation of edge pedestal rotation measurements in DIII-D
(Georgia Institute of Technology, 2008-01-25)
A novel methodology for inferring experimental toroidal angular momentum transfer rates from measured toroidal rotation velocities and other measured quantities has been developed and applied to analyze rotation measurements ...
Neoclassical theory for rotation and impurity transport in tokamaks with neutral beam injection
(Georgia Institute of Technology, 2001-01)
A self-consistent, first-principles neoclassical theory for rotation and impurity transport in tokamaks is presented. The implications of this theory for impurity transport in a tokamak are illustrated by a model problem ...
Representation of the plasma fluid equations in "Miller equilibrium" analytical flux surface geometry
(Georgia Institute of Technology, 2009-08-03)
The plasma fluid equations are represented explicitly in the magnetic flux surface coordinate system resulting from the analytical “Miller equilibrium” solution of the Grad–Shafranov equation. The magnetic geometry is ...
Momentum confinement in DIII-D shots with impurities
(Georgia Institute of Technology, 2001-07-05)
A neoclassical momentum transport model, consisting of gyroviscous and convective components, is applied to the analysis of momentum confinement in DIII-D [Luxon, Anderson, Batty et al., Plasma Physics and Controlled Nuclear ...
(Georgia Institute of Technology, 2007-03-15)
An edge pedestal investigation for high-confinement tokamak plasmas
(Georgia Institute of Technology, 2002-01-23)
A model for the edge pedestal in high-confinement mode tokamak plasmas is described. Separate gradient scale lengths of the density and of the ion and electron temperatures are calculated from transport and atomic physics ...