1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Analysis of toroidal phasing of resonant magnetic perturbation effects on edge transport in the DIII-D tokamak
Rent:
Rent this article for
USD
10.1063/1.4804350
/content/aip/journal/pop/20/5/10.1063/1.4804350
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/5/10.1063/1.4804350
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of I-coil and C-coil magnet locations for DIII-D RMP shot 147170. Reprinted with permission from R. A. Moyer , Phys. Plasmas , 056119 (2005). Copyright 2005 American Institute of Physics.

Image of FIG. 2.
FIG. 2.

Toroidal dependence of 0° and 60° radial magnetic fields produced by n = 3 I-coils superimposed with the “background” field. “Background” error field is produced by intrinsic field-errors and the n = 1 C-coil.

Image of FIG. 3.
FIG. 3.

Change in density associated with toroidal phase reversal in the I-coils and D-alpha signal showing ELM suppression during representative time slices.

Image of FIG. 4.
FIG. 4.

Hyperbolic tangent fit for electron density [10/m] for 0° and 60° I-coil phases with measured densities represented by the symbol +. Representative error from the fit statistics from time averaging for this measurement is about 1 × 10 m in the edge pedestal region.

Image of FIG. 5.
FIG. 5.

Measured ion and electron temperature profiles as a function of normalized radius.

Image of FIG. 6.
FIG. 6.

Ion fluxes calculated from the particle balance equation for 0° and 60°. Ion velocities and impurity fractions are measured using the CER system, and electron densities are measured using the Thomson scattering system.

Image of FIG. 7.
FIG. 7.

Measured radial electric field [kv/m] as a function of normalized radius.

Image of FIG. 8.
FIG. 8.

Toroidal rotation velocities [km/s] for both measured carbon and calculated deuterium ions in the 0° and 60° phases.

Image of FIG. 9.
FIG. 9.

Poloidal rotation velocities for measured carbon and calculated deuterium ions for 0° and 60°.

Image of FIG. 10.
FIG. 10.

Calculated toroidal angular momentum transfer frequency ν and interspecies collision frequency, ν.

Image of FIG. 11.
FIG. 11.

Calculated radially outward diffusion coefficients as a function of normalized radius.

Image of FIG. 12.
FIG. 12.

Calculated inward pinch velocity for 60° and 0°.

Image of FIG. 13.
FIG. 13.

Decomposition of components of calculated Vpinch for 0° with terms depending on NBI and toroidal electric field, radial electric field, poloidal velocity, and toroidal velocity. The ‘Beam and Ephi’ and ‘Vphi’ terms contribute nearly zero, and the ‘Erad’ is the only positive contribution.

Image of FIG. 14.
FIG. 14.

Decomposition of components of calculated Vpinch for 60° into terms depending on NBI and toroidal electric field, radial electric field, poloidal velocity, and toroidal velocity. The ‘Beam and Ephi’ and ‘Vphi’ terms contribute nearly zero, and the ‘Erad’ term is the slightly negative contribution around −50 m/s.

Image of FIG. 15.
FIG. 15.

(a) Calculated diffusive and non-diffusive pinch particle flux components of total flux with ion orbit loss correction. The 60° phase has a larger magnitude for both diffusive and non-diffusive flux than the 0° phase. (b) Net flux with the ion orbit loss correction.

Image of FIG. 16.
FIG. 16.

Comparison of particle fluxes with and without orbit loss calculated via the continuity equation and the pinch diffusion relation for (a) 0° and (b) 60°.

Image of FIG. 17.
FIG. 17.

Inferred electron thermal diffusivities for 60° and 0°.

Image of FIG. 18.
FIG. 18.

Inferred ion thermal diffusivities for 0° and 60° phases with the inclusion of the ion orbit loss correction.

Image of FIG. 19.
FIG. 19.

(a) Calculated change in deuterium toroidal rotation velocity due to ion orbit loss. (b) Measured carbon and calculated deuterium toroidal velocities.

Loading

Article metrics loading...

/content/aip/journal/pop/20/5/10.1063/1.4804350
2013-05-10
2014-04-16
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Analysis of toroidal phasing of resonant magnetic perturbation effects on edge transport in the DIII-D tokamak
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/5/10.1063/1.4804350
10.1063/1.4804350
SEARCH_EXPAND_ITEM