2019
DOI: 10.1088/1741-4326/ab1cfb
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Validation of full-f global gyrokinetic modeling results against the FT-2 tokamak Doppler reflectometry data using synthetic diagnostics

Abstract: Two versions of the X-mode Doppler reflectometry (DR) synthetic diagnostics are developed within the framework of the ELMFIRE global gyrokinetic modeling of the FT-2 tokamak ohmic discharge. In the 'fast' version the DR signal is computed in the linear theory approximation using the reciprocity theorem, utilizing the probing wave field pattern provided by computation and taking into account the 2D plasma inhomogeneity effects; whereas the alternative 'slow' version DR synthetic diagnostic is based on the full-… Show more

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Cited by 18 publications
(25 citation statements)
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“…The X mode spectra are shown to be more non-linearly saturated than spectra from O mode measurements. A similar consequence of non-linear saturation was also found in the FT-2 tokamak synthetic Doppler reflectometry effort [5].…”
Section: Discussionsupporting
confidence: 72%
“…The X mode spectra are shown to be more non-linearly saturated than spectra from O mode measurements. A similar consequence of non-linear saturation was also found in the FT-2 tokamak synthetic Doppler reflectometry effort [5].…”
Section: Discussionsupporting
confidence: 72%
“…The full-f elmfire GK code was used to study the turbulent transport and fluctuations in FT-2 tokamak conditions [249,[251][252][253][254][255]. The simulations predict the correct amplitude of GAM E r amplitude and show the GAM frequency profile consistent with continuum GAM dispersion relation modified by the presence of impurities [248], as shown in figure 36-see section 7.4.…”
Section: Gams In Nonlinear Gyrokinetic Simulationsmentioning
confidence: 95%
“…Unfortunately these values lie in the range where direct computation from ELMFIRE is impossible due to the strong numerical noise, as mentioned previously. [13] and impact of parallel velocity [15] is presented in previous works [16] and we refer the readers to these works for more information.…”
Section: X-mode Dr Modeling Results and Analysismentioning
confidence: 99%