Bulletin of the American Physical Society
59th Annual Meeting of the APS Division of Plasma Physics
Volume 62, Number 12
Monday–Friday, October 23–27, 2017; Milwaukee, Wisconsin
Session JO4: Spherical Tokamaks, Other
2:00 PM–5:00 PM,
Tuesday, October 24, 2017
Chair: Kathreen Thome, General Atomics
Abstract ID: BAPS.2017.DPP.JO4.8
Abstract: JO4.00008 : Electron Scale Turbulence and Transport in an NSTX H-mode Plasma Using a Synthetic Diagnostic for High-k Scattering Measurements*
3:24 PM–3:36 PM
Preview Abstract Abstract
Juan Ruiz Ruiz
Turbulent fluctuations on the electron gyro-radius length scale are thought to cause anomalous transport of electron energy in spherical tokamaks such as NSTX and MAST [1, 2] in some parametric regimes . In NSTX, electron-scale turbulence is studied through a combination of experimental measurements from a high-k scattering system  and gyrokinetic simulations. Until now most comparisons between experiment and simulation of electron scale turbulence have been qualitative, with recent work expanding to more quantitative comparisons via synthetic diagnostic development [5,6]. In this new work, we propose two alternate, complementary ways to perform a synthetic diagnostic using the gyrokinetic code GYRO. The first approach builds on previous work [5,6] and is based on the traditional selection of wavenumbers using a wavenumber filter, for which a new wavenumber mapping was implemented for general axisymmetric geometry. A second alternate approach selects wavenumbers in real-space to compute the power spectra. These approaches are complementary, and recent results from both synthetic diagnostic approaches applied to NSTX plasmas will be presented.  Kaye NF 2007,  Valovic NF 2011,  Guttenfelder PoP 2013,  Smith RSI 2008,  Poli PoP 2010,  Poli APS 2010.
*Work supported by U.S. DOE contracts DE-AC02-09CH11466 and DE-AC02-05CH11231.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2017.DPP.JO4.8
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