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ABSTRACT:
An extraction system, developed by Ka-Ngo Leung of Berkeley
Lab, uses low voltage to extract multiple small beams, or
beamlets, of ions from a multicusp plasma source through either
holes or slots. It is comprised of a plasma electrode, an
extraction electrode, and acceleration (high-voltage) electrodes.
Both plasma and extraction electrode use multiple apertures
while the acceleration electrode contains only a single aperture.
After extraction, the beamlets merge together to form a single
large beam, enhancing beam current. This larger beam is then
accelerated to higher energies and forms a parallel or a divergent
beam.
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