2014/09/01 by G. Castro, D. Mascali, L. Celona +12
Engineering · Physics and Astronomy · #Gyrotron and Vacuum Electronics Research #Particle accelerators and beam dynamics #Plasma Diagnostics and Applications
paper · doi:10.1063/1.4895603
openalex publication_date 2014/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Versatile Ion Source (VIS) is a microwave discharge ion source installed at INFN-LNS and here used as test-bench for the production of high intensity low emittance proton beams and for studies on plasma physics. A series of measurements have been carried out with VIS in order to test the source with light ions. In particular a He(+) beam has been characterized in terms of plasma discharge parameters. The experiment has been triggered by the observation of X-radiation emission from the plasma for some configuration of the magnetic field profile. The plasma electron energy distribution function is in fact modified when in some regions of the plasma chamber under-resonance discharge takes place, fulfilling the condition that allows the electromagnetic wave to electrostatic wave conversion. These tests allowed obtaining more than 50 mA of He(+) beams.