Phys. Rev. Lett. 73, 967–970 (1994)Generation and Measurement of 50-fs (rms) Electron PulsesReceived 2 June 1994; published in the issue dated 15 August 1994 An electron source has been developed at the Stanford SUNSHINE facility which can produce electron bunches as short as 50 fs (rms) with (2-4.6)×108e- per microbunch. This source consists of a 2.6 MeV rf gun with a thermionic cathode and an alpha magnet for bunch compression. Coherent transition radiation emitted at wavelengths equal to the bunch length and longer is used in a Michelson interferometer to determine the bunch length by optical autocorrelation. The experimental setup and results of bunch length measurements are described. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.73.967
DOI:
10.1103/PhysRevLett.73.967
PACS:
29.25.Bx, 06.30.Bp, 42.72.Ai
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