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- D. Mascali, C. Altana, L. Andò, C. Caliri, G. Castro, L. Celona, S. Gammino, L. Neri, F.P. Romano, G. Torrisi
INFN/LNS, Catania, Italy
- G. Sorbello
University of Catania, Catania, Italy
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The design of future high-performing ECRIS will require alternative approaches in microwave-to-plasma coupling, in order to maximize the electron density at relatively low frequency and reduce the super-hot electrons formation and their consequences on the beam stability and on source reliability. On these purposes, different activities have been carried out at INFN-LNS in the recent past, including advanced modelling, diagnostics, and studies about alternative methods of plasma heating based on electrostatic-waves generation. A description of these activities will be presented, with special emphasis to the microwave to plasma coupling and to the plasma diagnostics. Some of the already collected results have been a basis for the design of the new AISHa source (for hadrontherapy purposes) and the construction of the innovative prototype named Flexible Plasma Trap: on this machine we will search for advanced schemes of microwave launching, now ongoing thanks to full-wave plus kinetic calculations of the wave-to-plasma interaction mechanism
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