Modelling RF-plasma interaction in ECR ion sources
1 Laboratori Nazionali Del Sud, INFN, via S. Sofia 62, Catania, 95123, Italy
2 Laboratori Nazionali di Legnaro, INFN, Viale dell’Università 2, 35020 Legnaro (Padova), Italy
3 Università degli studi di Catania, Viale Andrea Doria 6, Catania, 95125, Italy
4 Dipartimento di Fisica e Astronomia, Università of Catania,Via S. Sofia, 64 I-95123 Catania
* Corresponding author: firstname.lastname@example.org
Published online: 23 October 2017
This paper describes three-dimensional self-consistent numerical simulations of wave propagation in magnetoplasmas of Electron cyclotron resonance ion sources (ECRIS). Numerical results can give useful information on the distribution of the absorbed RF power and/or efficiency of RF heating, especially in the case of alternative schemes such as mode-conversion based heating scenarios. Ray-tracing approximation is allowed only for small wavelength compared to the system scale lengths: as a consequence, full-wave solutions of Maxwell-Vlasov equation must be taken into account in compact and strongly inhomogeneous ECRIS plasmas. This contribution presents a multi-scale temporal domains approach for simultaneously including RF dynamics and plasma kinetics in a “cold-plasma”, and some perspectives for “hot-plasma” implementation. The presented results rely with the attempt to establish a modal-conversion scenario of OXB-type in double frequency heating inside an ECRIS testbench.
© The authors, published by EDP Sciences, 2017
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