Nordsieck length measurement of an intense relativistic electron beam propagating in high pressure neutral gas

Summary form only given. A conditioned 5 MeV, 20 kA, 40 ns FWHM intense relativistic electron beam produced by the SuperIBEX accelerator is injected into a 20-meter-diameter propagation tank at pressures in the 400-760 Torr range. The radial profile of the beam is measured using time-resolved optica...

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Bibliographic Details
Main Authors: Myers, M.C., Antoniades, J.A., Fernsler, R.F., Hubbard, R.F., Murphy, D.P., Santos, J., Weidman, D.J., Meger, R.A.
Format: Conference Proceeding
Language:English
Subjects:
Electron beams
Hoses
Length measurement
Optical propagation
Optical scattering
Particle beams
Physics
Plasma measurements
Plasma properties
Pressure measurement
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Summary:Summary form only given. A conditioned 5 MeV, 20 kA, 40 ns FWHM intense relativistic electron beam produced by the SuperIBEX accelerator is injected into a 20-meter-diameter propagation tank at pressures in the 400-760 Torr range. The radial profile of the beam is measured using time-resolved optical diagnostics and a segmented concentric Faraday cup. Beam and net currents are recorded using beambugs and Rogowski monitors. These diagnostics are deployed at various positions along the axis of propagation, providing a time-resolved history of beam profile evolution. The expansion rate as a function of background pressure is then determined numerically and compared with calculations of the Nordsieck length based on input beam parameters and a given pressure.
ISSN:0730-9244
2576-7208
DOI:10.1109/PLASMA.1993.593564