Evaluation of the RF Quasilinear Operator Using the TORIC Spectral Solver

Recently the full-wave solver TORIC has been modified to employ the plasma response for an arbitrary particle distribution [1]. In order to couple this code to a Fokker Planck solver for self-consistent evolution of nonthermal particle distributions it is first necessary to evaluate the RF quasilinear operator (D$_{ql}$) using the electric fields expressed in the spectral basis representation of TORIC [2]. The present work employs a technique [3] where D$_{ql}$ is written in terms of the local power dissipation, which has been reconstructed from the electric fields in the full-wave solver. This technique will also be compared with more simplified treatments of D$_{ql}$ that have been carried out in the past using TORIC [4]. \newline [1] E. Valeo et al., APS-DPP Meeting (2006). \newline [2] J. C. Wright, PhD Thesis, Princeton University, June, 1998. \newline [3] E. F. Jaeger et al., Physics of Plasmas \textbf{13}, 056101 (2005). \newline [4] M. Brambilla, Nucl. Fusion \textbf{34}, 1121 (1994).