Phys. Rev. E 52, 5416–5424 (1995)Nondestructive diagnostics for relativistic picosecond bunched electron beamsReceived 20 April 1995; published in the issue dated November 1995 The duration and form of relativistic picosecond electron bunches in the Duke University Mark III free-electron laser have been nondestructively measured by monitoring the submillimeter radiation produced by the bunches as they pass by or through a rectangular waveguide. Unlike other methods, our technique produces negligible electron bunch perturbation and allows real-time beam diagnostics to be performed simultaneously with free-electron laser (FEL) operation. We have measured 2.1-ps full width at half maximum duration electron bunches, studied the effect of electron gun and FEL modifications on bunch duration, and observed electron bunch variations during bunch trains. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.52.5416
DOI:
10.1103/PhysRevE.52.5416
PACS:
41.85.Ew, 41.85.Qg, 41.75.Ht, 41.60.Cr
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