Abstract
Accurate simulations of the behavior of RF waves in hot, magnetized fusion plasmas have traditionally been computationally demanding due to the integro-differential character of the hot plasma wave equation. In this work a method is described that allows the integral in the hot-plasma wave equation to be rewritten as a set of differential operators by fitting a polynomial through the dielectric tensor components. This approach is applied to a one-dimensional simulation with typical profiles and plasma parameters for the JET fusion reactor. The accuracy and computational time are compared with an all-orders model and a truncated Finite Larmor Radius model. It is shown that the proposed method can be used to achieve accuracies previously only obtained with extremely heavy all-orders models like the two-dimensional AORSA code, but at significantly reduced computational costs. The MATLAB code that has been developed in this work is available under the GPLv3 licence.
Original language | English |
---|---|
Article number | 035014 |
Number of pages | 12 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 63 |
Issue number | 3 |
DOIs | |
Publication status | Published - Mar 2021 |
Keywords
- All-orders
- Electromagnetics
- Finite Larmor radius
- Fusion plasma
- Integro-differential