Speaker
Description
The simulation of plasmas and their containing surfaces involves many aspects, so that a careful choice of the multiphysics relevant model is necessary. Note that ion sources (IS) for accelerators are necessarily bounded by metal or insulator walls, so that their physical characteristic should be accounted for. Moreover charge large sheaths develop near walls, and an ambipolar potential controls plasma transport. Another feature is the use of radiofrequency (RF) or microwaves to energize plasma. This work discusses (as examples) the case of ECRIS (electron cyclotron resonance IS) with its restored relation to elliptical equations and the RF negative ion source for fusion, where the simulation of the Faraday Shield is compuationally very requiring: moreover both cross field drifts and the Tonks-Langmuir-Self complete sheath equation are relevant to ion beam formation.
