Automated analysis of turbulent electron temperature fluctuation measurements at ASDEX Upgrade*

Turbulent transport is generally found to determine energy and particle confinement times in tokamaks. The correlation electron cyclotron emission (CECE) diagnostic installed on the ASDEX Upgrade tokamak measures broadband, long-wavelength (k_θρ_s < 0.3) electron temperature fluctuations, yielding insight into turbulence-driven transport. Analysis of CECE data is well-suited to automation during the steady-state conditions often used for experimental studies. Such an automated analysis must account for the presence of artifacts, stemming from sources including electronics noise and low-frequency MHD modes, that can obscure the actual temperature fluctuations and impact the validity of the measurements. Here results of an automated, noise-filtering computational method for the analysis of CECE data are presented. The automated analysis is used to create a large experimental database of CECE analysis results. The database provides a unique opportunity to search for trends in turbulent electron temperature fluctuation levels over a large range of parameter space and allows for direct comparisons with cutting-edge numerical models.