NASA NTRS · 19830000664
Controlling the Focus in Electron-Beam Welders
Abstract
Detector using two whirling wires measures focus of beam in electronbeam welder. Multiple-wire beam-sampling method provides for simple nullmeter focus indication easily controlled by operator. Detector not only operates at high beam currents but eliminates need for oscilloscope.
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Macfarlane, D. I., Spiegel, K. W.. 1984-11-01. Controlling the Focus in Electron-Beam Welders. https://ntrs.nasa.gov/citations/19830000664
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