Validation of short-pulse reflectometry turbulence measurements with a synthetic diagnostic
Experimental measurements of the turbulence amplitude utilizing a short pulse reflectometry method are presented. Two discharges with shaped plasma possessing opposite signs of triangularity are considered and a higher turbulence amplitude is found in the positive triangularity case. To confirm this result, a synthetic short pulse reflectometry diagnostic is developed. Local gyrokinetic modeling with the GENE code is carried out to produce turbulence relevant to the experimental conditions. This turbulence is then used as an input for the full-wave CUWA code to produce synthetic short pulse reflectometry signals. By matching synthetic and experimental reflectometry data, the difference between turbulence amplitudes in the two cases is confirmed. Additionally, the capability of the diagnostic to also measure the frequency spectrum of the turbulence is demonstrated.
WOS:001135875900001
2024-02-01
64
2
026010
REVIEWED
EPFL
Funder | Grant Number |
EUROfusionhttp://dx.doi.org/10.13039/100019784 | 101052200 |
European Union via the Euratom Research and Training Programme | |
Swiss State Secretariat for Education, Research and Innovation (SERI) | |
European Commission or SERI | |
Swiss National Science Foundation | |
EUROfusion HPC (Marconi-Fusion) | s1100 |
Swiss National Supercomputing Centre (CSCS) | |