Electron heat transport from stochastic fields in gyrokinetic simulations

E. Wang; W. M. Nevins; J. Candy; D. Hatch; P. Terry; W. Guttenfelder

doi:10.1063/1.3574660

Electron heat transport from stochastic fields in gyrokinetic simulations

E. Wang
, W. M. Nevins
, J. Candy
, D. Hatch
, P. Terry
, W. Guttenfelder

PPPL NSTX

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

GYRO is used to examine the perturbed magnetic field structure generated by electromagnetic gyrokinetic simulations of the CYCLONE base case as β_e is varied from 0.1 to 0.7, as investigated by J. Candy [Phys. Plasmas 12, 072307 (2005)]. Poincare surface of section plots obtained from integrating the self-consistent magnetic field demonstrates widespread stochasticity for all nonzero values of β_e. Despite widespread stochasticity of the perturbed magnetic fields, no significant increase in electron transport is observed. The magnetic diffusion, d_m [A. B. Rechester and M. N. Rosenbluth, Phys. Rev. Lett 40, 38 (1978)], is used to quantify the degree of stochasticity and related to the electron heat transport for hundreds of time slices in each simulation.

Original language	English (US)
Article number	056111
Journal	Physics of Plasmas
Volume	18
Issue number	5
DOIs	https://doi.org/10.1063/1.3574660
State	Published - May 2011

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.3574660

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abstract = "GYRO is used to examine the perturbed magnetic field structure generated by electromagnetic gyrokinetic simulations of the CYCLONE base case as βe is varied from 0.1 to 0.7, as investigated by J. Candy [Phys. Plasmas 12, 072307 (2005)]. Poincare surface of section plots obtained from integrating the self-consistent magnetic field demonstrates widespread stochasticity for all nonzero values of βe. Despite widespread stochasticity of the perturbed magnetic fields, no significant increase in electron transport is observed. The magnetic diffusion, dm [A. B. Rechester and M. N. Rosenbluth, Phys. Rev. Lett 40, 38 (1978)], is used to quantify the degree of stochasticity and related to the electron heat transport for hundreds of time slices in each simulation.",

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T1 - Electron heat transport from stochastic fields in gyrokinetic simulations

AU - Wang, E.

AU - Nevins, W. M.

AU - Candy, J.

AU - Hatch, D.

AU - Terry, P.

AU - Guttenfelder, W.

PY - 2011/5

Y1 - 2011/5

N2 - GYRO is used to examine the perturbed magnetic field structure generated by electromagnetic gyrokinetic simulations of the CYCLONE base case as βe is varied from 0.1 to 0.7, as investigated by J. Candy [Phys. Plasmas 12, 072307 (2005)]. Poincare surface of section plots obtained from integrating the self-consistent magnetic field demonstrates widespread stochasticity for all nonzero values of βe. Despite widespread stochasticity of the perturbed magnetic fields, no significant increase in electron transport is observed. The magnetic diffusion, dm [A. B. Rechester and M. N. Rosenbluth, Phys. Rev. Lett 40, 38 (1978)], is used to quantify the degree of stochasticity and related to the electron heat transport for hundreds of time slices in each simulation.

AB - GYRO is used to examine the perturbed magnetic field structure generated by electromagnetic gyrokinetic simulations of the CYCLONE base case as βe is varied from 0.1 to 0.7, as investigated by J. Candy [Phys. Plasmas 12, 072307 (2005)]. Poincare surface of section plots obtained from integrating the self-consistent magnetic field demonstrates widespread stochasticity for all nonzero values of βe. Despite widespread stochasticity of the perturbed magnetic fields, no significant increase in electron transport is observed. The magnetic diffusion, dm [A. B. Rechester and M. N. Rosenbluth, Phys. Rev. Lett 40, 38 (1978)], is used to quantify the degree of stochasticity and related to the electron heat transport for hundreds of time slices in each simulation.

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Electron heat transport from stochastic fields in gyrokinetic simulations

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