Feasibility study for a correlation electron cyclotron emission turbulence diagnostic based on nonlinear gyrokinetic simulations
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White_Feasibility study.pdf
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Author(s)
Mikkelsen, David
Candy, J.
Waltz, R. E.
White, Anne E.
Howard, Nathaniel Thomas
Greenwald, Martin J.
Date Issued
September 2011
Journal
Plasma Physics and Controlled Fusion
Publisher
IOP Publishing
Citation
White, A E, N T Howard, D R Mikkelsen, M Greenwald, J Candy, and R E Waltz. “Feasibility study for a correlation electron cyclotron emission turbulence diagnostic based on nonlinear gyrokinetic simulations.” Plasma Physics and Controlled Fusion 53, no. 11 (November 1, 2011): 115003.
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Author's final manuscript
Abstract
This paper describes the use of nonlinear gyrokinetic simulations to assess the feasibility of a new correlation electron cyclotron emission (CECE) diagnostic that has been proposed for the Alcator C-Mod tokamak (Marmar et al 2009 Nucl. Fusion 49 104014). This work is based on a series of simulations performed with the GYRO code (Candy and Waltz 2003 J. Comput. Phys. 186 545). The simulations are used to predict ranges of fluctuation level, peak poloidal wavenumber and radial correlation length of electron temperature fluctuations in the core of the plasma. The impact of antenna pattern and poloidal viewing location on measurable turbulence characteristics is addressed using synthetic diagnostics. An upper limit on the CECE sample volume size is determined. The modeling results show that a CECE diagnostic capable of measuring transport-relevant, long-wavelength (k[subscript θ]ρ[subscript s] < 0.5) electron temperature fluctuations is feasible at Alcator C-Mod.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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DOI of Published Version
https://doi.org/10.1088/0741-3335/53/11/115003
