EXPERIMENTAL CHARACTERIZATION OF AN OVERDENSE PLASMA IN A COMPACT ION SOURCE
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articlePeer-reviewed
publishedVersion
Author
Castro , Giuseppe
Mascali , David
Romano , Francesco Paolo
Altana , Carmen
Caliri , Claudia
Celona , Luigi
Di Giugno , Rossella
Gambino , Nadia
Lanaia , Davide
Miracoli , Rosalba
Musumarra , Agatino
Neri , Lorenzo
Torrisi , Giuseppe
Gammino , Santo
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Creative Commons Attribution 4.0 International Licensehttp://creativecommons.org/licenses/by/4.0/
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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.
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