Global effects on neoclassical transport in the pedestal with impurities

Pusztai, I.; Buller, S.; Landreman, M.

doi:10.1088/0741-3335/58/8/085001

Title: Global effects on neoclassical transport in the pedestal with impurities

Full Record
Other Related Research

Authors:: Pusztai, I.; Buller, S.; Landreman, M.

Publication Date:: Thu Jun 30 00:00:00 EDT 2016

Sponsoring Org.:: USDOE

OSTI Identifier:: 1259916

Grant/Contract Number:: DEFC0208ER54964; DEFG0293ER54197

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Plasma Physics and Controlled Fusion

Additional Journal Information:: Journal Name: Plasma Physics and Controlled Fusion Journal Volume: 58 Journal Issue: 8; Journal ID: ISSN 0741-3335

Publisher:: IOP Publishing

Country of Publication:: United Kingdom

Language:: English

Citation Formats


                    Pusztai, I., Buller, S., and Landreman, M. Global effects on neoclassical transport in the pedestal with impurities.  United Kingdom: N. p., 2016. 
Web.  doi:10.1088/0741-3335/58/8/085001.

Copy to clipboard


                    Pusztai, I., Buller, S., & Landreman, M. Global effects on neoclassical transport in the pedestal with impurities.  United Kingdom.  https://doi.org/10.1088/0741-3335/58/8/085001

Copy to clipboard


                    Pusztai, I., Buller, S., and Landreman, M. Thu .  
"Global effects on neoclassical transport in the pedestal with impurities".  United Kingdom.  https://doi.org/10.1088/0741-3335/58/8/085001.

Copy to clipboard


                    
@article{osti_1259916,

  title        = {Global effects on neoclassical transport in the pedestal with impurities},

  author       = {Pusztai, I. and Buller, S. and Landreman, M.},

  abstractNote = {},

  doi          = {10.1088/0741-3335/58/8/085001},

  journal      = {Plasma Physics and Controlled Fusion},

  number       = 8,

  volume       = 58,

  place        = {United Kingdom},

  year         = {Thu Jun 30 00:00:00 EDT 2016},

  month        = {Thu Jun 30 00:00:00 EDT 2016}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Publisher's Version of Record
https://doi.org/10.1088/0741-3335/58/8/085001

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 7 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Impurities in a non-axisymmetric plasma. Transport and effect on bootstrap current

Journal Article Mollén, A. ; Landreman, M. ; Smith, H. M. ; ... - Physics of Plasmas

Impurities cause radiation losses and plasma dilution, and in stellarator plasmas the neoclassical ambipolar radial electric field is often unfavorable for avoiding strong impurity peaking. In this work we use a new continuum drift-kinetic solver, the SFINCS code (the Stellarator Fokker-Planck Iterative Neoclassical Conservative Solver) [M. Landreman et al., Phys. Plasmas 21 (2014) 042503] which employs the full linearized Fokker-Planck-Landau operator, to calculate neoclassical impurity transport coefficients for a Wendelstein 7-X (W7-X) magnetic configuration. We compare SFINCS calculations with theoretical asymptotes in the high collisionality limit. We observe and explain a 1/nu-scaling of the inter-species radial transport coefficient at lowmore »« less
Cited by 10
https://doi.org/10.1063/1.4935901

Full Text Available
Turbulent transport of MeV range cyclotron heated minorities as compared to alpha particles

Journal Article Pusztai, István ; Wilkie, George J. ; Kazakov, Yevgen O. ; ... - Plasma Physics and Controlled Fusion
Cited by 3
https://doi.org/10.1088/0741-3335/58/10/105001
Effects of electrostatic trapping on neoclassical impurity transport in a collision-dominated plasma

Journal Article Chang, C S ; Hazeltine, R D - Phys. Fluids; (United States)

It has been shown by Hazeltine and Ware that the existence of a reasonable high-Z impurity species can produce electrostatic trapping and drift comparable to the magnetic effects, assuming that the main plasma components are in the plateau regime. The calculation is extended to the collisional regime, modeling the edge region of the tokamak column and significant modification to the neoclassical impurity transport coefficients is found. A fluid approach is developed and the transport coefficients are found to be nonlinear in density and temperature gradients.
https://doi.org/10.1063/1.863768
Effects of electrostatic trapping on neoclassical transport in an impure plasma

Journal Article Hazeltine, R D ; Ware, A A - Phys. Fluids; (United States)

Contamination of a toroidally confined plasma by highly charged impurity ions can produce substantial variation of the electrostatic potential within a magnetic surface. The resulting electrostatic trapping and electrostatic drifts, of hydrogen ions and electrons, yields significant alterations in neoclassical transport theory. A transport theory which includes these effects is derived from the drift-kinetic equation, with an ordering scheme modeled on the parameters of recent tokamak experiments. The theory self-consistently predicts that electrostatic trapping should be fully comparable to magnetic trapping, and provides transport coefficients which, depending quadratically upon the temperature and pressure gradients, differ markedly from the standard neoclassicalmore » coefficients for a pure plasma. (AIP)« less
https://doi.org/10.1063/1.861622
Full-f Neoclassical Simulations toward a Predictive Model for H-mode Pedestal Ion Energy, Particle and Momentum Transport

Conference Battaglia, D. J. ; Boedo, J. A. ; Burrell, K. H. ; ...

Energy and particle transport rates are decoupled in the H-mode edge since the ion thermal transport rate is primarily set by the neoclassical transport of the deuterium ions in the tail of the thermal energy distribution, while the net particle transport rate is set by anomalous transport of the colder bulk ions. Ion orbit loss drives the energy distributions away from Maxwellian, and describes the anisotropy, poloidal asymmetry and local minimum near the separatrix observed in the Ti profile. Non-Maxwellian distributions also drive large intrinsic edge flows, and the interaction of turbulence at the top of the pedestal with themore »« less
Full Text Available

Similar Records