Ion beam accelerator system
Patent
·
OSTI ID:6451287
A system is described that combines geometrical and electrostatic focusing to provide high ion extraction efficiency and good focusing of an accelerated ion beam. The apparatus includes a pair of curved extraction grids (16,18) with multiple pairs of aligned holes positioned to direct a group of beamlets (20) along converging paths. The extraction grids are closely spaced and maintained at a moderate potential to efficiently extract beamlets of ions and allow them to combine into a single beam (14). An accelerator electrode device (22) downstream from the extraction grids, is at a much lower potential than the grids to accelerate the combined beam.
- Assignee:
- California Institute of Technology
- Patent Number(s):
- US 4447773
- OSTI ID:
- 6451287
- Country of Publication:
- United States
- Language:
- English
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