Benchmarking finite- $\beta$ ITG gyrokinetic simulations

We report the results of an electromagnetic gyrokinetic-simulation benchmarking study based on a well-diagnosed ion-temperature-gradient (ITG)-turbulence dominated experimental plasma. We compare the 4x3 matrix of transport/transfer quantities for each plasma species; namely the (a) particle flux, $\Gamma_{a}$, (b) momentum flux, $\Pi_{a}$, (c) energy flux, $Q_{a}$, and (d) anomalous heat exchange, $S_{a}$, with each transport coefficient broken down into: (1) electrostatic ($\delta \varphi )$ (2) transverse electromagnetic ($\delta A_{\parallel })$, and (3) compressional electromagnetic, ($\delta B_{\parallel })$ contributions. We compare realization-independent quantities (correlation functions, spectral densities, etc.), which characterize the fluctuating fields from various gyrokinetic simulation codes.