Search Results - "Nevins, W. M."

Electromagnetic transport from microtearing mode turbulence by Guttenfelder, W, Candy, J, Kaye, S M, Nevins, W M, Wang, E, Bell, R E, Hammett, G W, LeBlanc, B P, Mikkelsen, D R, Yuh, H

“…This Letter presents nonlinear gyrokinetic simulations of microtearing mode turbulence. The simulations include collisional and electromagnetic effects and use…”
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Saturation of gyrokinetic turbulence through damped eigenmodes by Hatch, D R, Terry, P W, Jenko, F, Merz, F, Nevins, W M

“…In the context of toroidal gyrokinetic simulations, it is shown that a hierarchy of damped modes is excited in the nonlinear turbulent state. These modes exist…”
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Origin of magnetic stochasticity and transport in plasma microturbulence by Hatch, D R, Pueschel, M J, Jenko, F, Nevins, W M, Terry, P W, Doerk, H

“…Nonlinear excitation of linearly stable microtearing modes--with zonal modes acting as a catalyst--is shown to be responsible for the near-ubiquitous magnetic…”
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Magnetic stochasticity in gyrokinetic simulations of plasma microturbulence by Nevins, W M, Wang, E, Candy, J

“…Analysis of the magnetic field structure from electromagnetic simulations of tokamak ion temperature gradient turbulence demonstrates that the magnetic field…”
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TEMPEST simulations of collisionless damping of the geodesic-acoustic mode in edge-plasma pedestals by Xu, X Q, Xiong, Z, Gao, Z, Nevins, W M, McKee, G R

“…The fully nonlinear (full-f) four-dimensional TEMPEST gyrokinetic continuum code correctly produces the frequency and collisionless damping of…”
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Blob dynamics in 3D BOUT simulations of tokamak edge turbulence by RUSSELL, D. A, D'IPPOLITO, D. A, MYRA, J. R, NEVINS, W. M, XU, X. Q

“…Propagating filaments of enhanced plasma density, or blobs, observed in 3D numerical simulations of a diverted, neutral-fueled tokamak are studied…”
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Extreme heat fluxes in gyrokinetic simulations: a new critical β by Pueschel, M J, Terry, P W, Jenko, F, Hatch, D R, Nevins, W M, Görler, T, Told, D

“…A hitherto unexplained feature of electromagnetic simulations of ion temperature gradient turbulence is the apparent failure of the transport levels to…”
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Dynamical simulations of boundary plasma turbulence in divertor geometry by Xu, X Q, Nevins, W M, Cohen, R H, Myra, J R, Snyder, P B

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A review of confinement requirements for advanced fuels by NEVINS, W. M

“…The energy confinement requirements for burning D-3He, D-D, or P-11B are reviewed, with particular attention to the effects of helium ash accumulation. It is…”
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Turbulence in the Divertor Region of Tokamak Edge Plasma by Umansky, M. V., Rognlien, T. D., Xu, X. Q., Cohen, R. H., Nevins, W. M.

“…Results of recent modeling of tokamak edge plasma with the turbulence code BOUT are presented. In previous studies with BOUT, the background profiles of plasma…”
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Correlation of Density Pedestal Width and Neutral Penetration Length by Xu, X. Q., Nevins, W. M., Cohen, R. H., Rognlien, T. D., Umansky, M. V.

“…Pedestal studies in DIII‐D and MAST find good correlation between the width of the H‐mode density barrier and the neutral penetration length [1, 2]. These…”
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Experimental and Theoretical Study of Quasicoherent Fluctuations in Enhanced D α Plasmas in the Alcator C-Mod Tokamak by Mazurenko, A., Porkolab, M., Mossessian, D., Snipes, J. A., Xu, X. Q., Nevins, W. M.

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Nonlinear absorption of intense microwave pulses by NEVINS, W. M, ROGNLIEN, T. D, COHEN, B. I

“…Free-electron lasers in the electron cyclotron frequency range have been proposed as an efficient means of heating and driving current in tokamak plasmas. The…”
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General Gyrokinetic Equations for Edge Plasmas by Qin, H., Cohen, R. H., Nevins, W. M., Xu, X. Q.

“…During the pedestal cycle of H‐mode edge plasmas in tokamak experiments, large‐amplitude pedestal build‐up and destruction coexist with small‐amplitude drift…”
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Magnetic Stochasticity in Gyrokinetic Simulations of Plasma Microturbulence by Nevins, W. M., Wang, E., Candy, J.

“…Analysis of the magnetic field structure from electromagnetic simulations of tokamak ion temperature gradient turbulence demonstrates that the magnetic field…”
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Magnetic stochasticity in gyrokinetic simulations of plasma microturbulence by Nevins, W M, Wang, E, Candy, J

“…Analysis of the magnetic field structure from electromagnetic simulations of tokamak ion temperature gradient turbulence demonstrates that the magnetic field…”
Get full text

Origin of Magnetic Stochasticity and Transport in Plasma Microturbulence by Hatch, D. R., Pueschel, M. J., Jenko, F., Nevins, W. M., Terry, P. W., Doerk, H.

“…In this paper, nonlinear excitation of linearly stable microtearing modes—with zonal modes acting as a catalyst—is shown to be responsible for the…”
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Origin of Magnetic Stochasticity and Transport in Plasma Microturbulence by Hatch, D. R., Pueschel, M. J., Jenko, F., Nevins, W. M., Terry, P. W., Doerk, H.

“…Nonlinear excitation of linearly stable microtearing modes—with zonal modes acting as a catalyst—is shown to be responsible for the near-ubiquitous magnetic…”
Get full text

Saturation of Gyrokinetic Turbulence through Damped Eigenmodes by Hatch, D. R., Terry, P. W., Jenko, F., Merz, F., Nevins, W. M.

“…In the context of toroidal gyrokinetic simulations, it is shown that a hierarchy of damped modes is excited in the nonlinear turbulent state. These modes exist…”
Get full text

Unstable Drift Waves in a Sheared Magnetic Field by Lee, W. W., Nevins, W. M., Okuda, H., White, R. B.

“…Electrostatic collisionless drift waves in a sheared magnetic field have been studied extensively with use of particle-code simulations. When the shear is…”
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