Speaker
Description
CUBE-ECRIS is a permanent magnet prototype ion source operating at 11 GHz frequency. It was constructed to (1) study the electron heating and the stability of the plasma in a minimum-B quadrupole magnetic field topology, (2) demonstrate high-charge state ion production and beam transport from the quadrupole field through an extraction slit, and (3) support the development of a net-zero front-end for Time-of-Flight Elastic Recoil Detection Analysis (ToF-ERDA) facility. We summarise experimental results, e.g. ion beam currents, bremsstrahlung spectra, afterglow transient peaks and instability-induced electron and ion bursts, and discuss the main limitations i.e. available microwave power and beam losses in the extraction and low energy beam transport of the CUBE-ECRIS. We describe possible upgrades to the permanent magnet configuration and the extraction system that would alleviate some of the limitations observed in the experiments. Finally, we discuss the results of a recent experimental campaign where the CUBE-ECRIS was coupled with an adjustable permanent magnet dipole to demonstrate the production, separation and transport of high charge state argon beams meeting the requirements of the ToF-ERDA application.
| Classification | MC7: Beam extraction and transport |
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