A new fast and accurate kinetic code for the study of the low frequency dynamics in a magnetised plasma, driven by an electrostatic pump

This paper deals with the upgrade of a Vlasov-Maxwell kinetic code, which, althoughable to describe with high precision the electron and the ion dynamics in the (x, vx, vy)phase space, turns out to be exceedingly demanding in terms of run times. In themodified code, which is described here, the ions are treated kinetically, the electronsare attributed their E´B drift velocity, and the Maxwell equations for theelectromagnetic components of the self-consistent fields are eliminated. The new codeis faster up to a factor 100 and the results are accurately comparable to the ones of thefully kinetic program. It is therefore possible to use our model to investigate theinteraction of electrostatic waves (specifically, ion Bernstein waves) with amagnetised plasma, considering actual experimental parameters.