EXPERIMENTAL CHARACTERIZATION OF AN OVERDENSE PLASMA IN A COMPACT ION SOURCE

Giuseppe Castro, David Mascali, Francesco Paolo Romano, Carmen Altana, Claudia Caliri, Luigi Celona, Rossella Di Giugno, Nadia Gambino, Davide Lanaia, Rosalba Miracoli, Agatino Musumarra, Lorenzo Neri, Giuseppe Torrisi, Santo Gammino

Abstract


Electron Cyclotron Resonance Ion Sources (ECRIS) are compact plasma-based machines able to feed particle accelerators with high intensity beams of multi-charged ions. ECRIS plasmas are density-limited, since they are sustained by E.M. wave propagation up to a cut-off density value. In the past, the only way to improve ECRIS performance was to increase the microwave frequency and the magnetic field strength to satisfy the ECR condition. A different plasma heating mechanism is being applied at INFN-LNS. It is based on Electron Bernstein Waves (EBW), i.e., electrostatic waves which do not suffer any density cut-off. Highlights concerning preliminary signatures of EBW formation and subsequent absorption are given here.


Keywords


plasma; electrostatic waves; Bernstein waves; ion sources; ECRIS

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ISSN 1210-2709 (Print)
ISSN 1805-2363 (Online)
Published by the Czech Technical University in Prague