  Electron Cyclotron Resonance Ion Sources (ECRIS) progressed to higher and
higher ion currents and charge states by adopting stronger magnetic fields
(beneficial for confinement) and proportionally higher ECR frequencies. Further
improvements would require the attainment of "triple products" of density,
temperature and confinement time comparable with major fusion experiments. For
this, we propose a new, toroidal rather than linear, ECRIS geometry, which
would at the same time improve confinement and make better use of the magnetic
field. Ion extraction is more complicated than from a linear device, but
feasible, as our modelling suggests: single-particle tracings showed successful
extraction by at least two techniques, making use respectively of a magnetic
extractor and of ExB drifts. Additional techniques are briefly discussed.
