Accelerating simulations of electromagnetic waves in hot, magnetized fusion plasmas

R.H.S. Bude (Corresponding author), D. van Eester, J. van Dijk, R.J.E. Jaspers, A.B. Smolders

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review


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.
Originele taal-2Engels
Aantal pagina's12
TijdschriftPlasma Physics and Controlled Fusion
Nummer van het tijdschrift3
StatusGepubliceerd - mrt 2021

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