A new synthetic correlation electron cyclotron emission diagnostic for validating nonlinear gyrokinetic simulations of electron temperature turbulence

Wang, G.; Rhodes, T. L.; Howard, N. T.; Peebles, W. A.

doi:10.1063/5.0219577

A new synthetic correlation electron cyclotron emission diagnostic for validating nonlinear gyrokinetic simulations of electron temperature turbulence

Journal Article · Wed Aug 07 00:00:00 EDT 2024 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0219577· OSTI ID:2586410

^[1]; ^[1]; ^[2]; ^[1]

University of California, Los Angeles, CA (United States)
MIT - Plasma Science and Fusion Center, Cambridge, MA (United States)

To validate nonlinear gyrokinetic simulations of electron temperature turbulence, the experimental correlation electron cyclotron emission (CECE) measurements are to be compared using a synthetic CECE diagnostic, which generates modeled CECE measurement quantities by implementing realistic measurement parameters (e.g., spatial and wavenumber resolutions, radial location, etc.) to nonlinear gyrokinetic simulations. In this work, we calculate the radial and vertical spatial and wavenumber transfer functions, which are defined by the electron cyclotron emission emissivity radial profile and vertical probing antenna pattern, respectively. These transfer functions are applied to nonlinear gyrokinetic simulations of electron temperature turbulence using the continuum gyrokinetic code. A simultaneous comparison of the experimental electron temperature turbulence power spectrum and root-mean-square (RMS) level, as well as the radial correlation length with the new synthetic CECE diagnostic at a core location ρ ∼ 0.75 in an L-mode DIII-D tokamak plasma, is presented. Here, the preliminary result shows that the synthetic CECE output underestimates the RMS level by ∼42% and overestimates the radial correlation length by ∼40%.

View Accepted Manuscript (DOE)

Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: FC02-04ER54698; SC0014264; SC0019352

OSTI ID:: 2586410

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 95; ISSN 1089-7623; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (19)

A high-accuracy Eulerian gyrokinetic solver for collisional plasmas Candy, J.; Belli, E. A.; Bravenec, R. V. Journal of Computational Physics, Vol. 324 https://doi.org/10.1016/j.jcp.2016.07.039	journal	November 2016
Correlation radiometry of electron cyclotron radiation in TEXT-U (invited) Cima, G.; Watts, C.; Gandy, R. F. Review of Scientific Instruments, Vol. 66, Issue 1 https://doi.org/10.1063/1.1146225	journal	January 1995
Effects of limited spatial resolution on fluctuation measurements (invited) Bravenec, R. V.; Wootton, A. J. Review of Scientific Instruments, Vol. 66, Issue 1 https://doi.org/10.1063/1.1146226	journal	January 1995
Spatial transfer function for the beam emission spectroscopy diagnostic on DIII-D Shafer, M. W.; Fonck, R. J.; McKee, G. R. Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2221908	journal	October 2006
A correlation electron cyclotron emission diagnostic and the importance of multifield fluctuation measurements for testing nonlinear gyrokinetic turbulence simulations White, A. E.; Schmitz, L.; Peebles, W. A. Review of Scientific Instruments, Vol. 79, Issue 10 https://doi.org/10.1063/1.2981186	journal	October 2008
Implementation and application of two synthetic diagnostics for validating simulations of core tokamak turbulence Holland, C.; White, A. E.; McKee, G. R. Physics of Plasmas, Vol. 16, Issue 5 https://doi.org/10.1063/1.3085792	journal	May 2009
Design of a correlation electron cyclotron emission diagnostic for Alcator C-Mod Sung, C.; White, A. E.; Irby, J. H. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4731750	journal	October 2012
Measurement of electron temperature fluctuations using a tunable correlation electron cyclotron emission system on Alcator C-Mod Howard, N. T.; Sung, C.; White, A. E. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4886422	journal	November 2014
The design of a correlation electron cyclotron emission system on J-TEXT Yang, Z. J.; Xiao, Y.; Ma, X. D. Review of Scientific Instruments, Vol. 86, Issue 4 https://doi.org/10.1063/1.4917271	journal	April 2015
Measurement of turbulent electron temperature fluctuations on the ASDEX Upgrade tokamak using correlated electron cyclotron emission Freethy, S. J.; Conway, G. D.; Classen, I. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4958908	journal	July 2016
A frequency tunable, eight-channel correlation ECE system for electron temperature turbulence measurements on the DIII-D tokamak Sung, C.; Peebles, W. A.; Wannberg, C. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4961296	journal	August 2016
Correlation electron cyclotron emission diagnostic in TCV Fontana, M.; Porte, L.; Molina Cabrera, P. Review of Scientific Instruments, Vol. 88, Issue 8 https://doi.org/10.1063/1.4997075	journal	August 2017
Erratum: “Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX upgrade” [Rev. Sci. Instrum. 89, 053503 (2018)] Creely, A. J.; Freethy, S. J.; Burke, W. M. Review of Scientific Instruments, Vol. 89, Issue 11 https://doi.org/10.1063/1.5078516	journal	November 2018
An eight-channel correlation electron cyclotron emission diagnostic for turbulent electron temperature fluctuation measurement in HL-2A tokamak Fang, K. R.; Shi, Z. B.; Yang, Z. C. Review of Scientific Instruments, Vol. 90, Issue 6 https://doi.org/10.1063/1.5091453	journal	June 2019
New, improved analysis of correlation ECE data to accurately determine turbulent electron temperature spectra and magnitudes (invited) Wang, G.; Rhodes, T. L.; Peebles, W. A. Review of Scientific Instruments, Vol. 92, Issue 4 https://doi.org/10.1063/5.0041858	journal	April 2021
Analysis method for calculating radial correlation length of electron temperature turbulence from correlation electron cyclotron emission radiometer Wang, G.; Rhodes, T. L.; Peebles, W. A. Review of Scientific Instruments, Vol. 93, Issue 11 https://doi.org/10.1063/5.0101680	journal	November 2022
Simultaneous reproduction of experimental profiles, fluxes, transport coefficients, and turbulence characteristics via nonlinear gyrokinetic profile predictions in a DIII-D ITER similar shape plasma Howard, N. T.; Rodriguez-Fernandez, P.; Holland, C. Physics of Plasmas, Vol. 31, Issue 3 https://doi.org/10.1063/5.0175792	journal	March 2024
Error propagation for the transformation of time domain into frequency domain Fornies-Marquina, J. M.; Letosa, J.; Garcia-Gracia, M. IEEE Transactions on Magnetics, Vol. 33, Issue 2 https://doi.org/10.1109/20.582534	journal	March 1997
A Review of ECE Correlation Radiometry Techniques for Detection of Core Electron Temperature Fluctuations Watts, Christopher Fusion Science and Technology, Vol. 52, Issue 2 https://doi.org/10.13182/fst07-a1497	journal	August 2007

Similar Records

A correlation electron cyclotron emission diagnostic and the importance of multifield fluctuation measurements for testing nonlinear gyrokinetic turbulence simulations

Journal Article · Wed Oct 15 00:00:00 EDT 2008 · Review of Scientific Instruments · OSTI ID:21266451

Implementation and application of two synthetic diagnostics for validating simulations of core tokamak turbulence

Journal Article · Thu Apr 30 20:00:00 EDT 2009 · Physics of Plasmas · OSTI ID:1564654

Design of a correlation electron cyclotron emission diagnostic for Alcator C-Mod

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments · OSTI ID:22093922

Related Subjects

Cyclotron radiation
Gyrokinetic simulations
Plasma diagnostics
Plasma turbulence
Radiometry

A new synthetic correlation electron cyclotron emission diagnostic for validating nonlinear gyrokinetic simulations of electron temperature turbulence

Citation Formats

References (19)

Similar Records

Related Subjects