Direct Measurement of Sub-10 fs Relativistic Electron Beams with Ultralow Emittance

Ultralow emittance (≤20  nm, normalized) electron beams with 10^{5} electrons per bunch are obtained by tightly focusing an ultrafast (∼100  fs) laser pulse on the cathode of a 1.6 cell radio frequency photoinjector. Taking advantage of the small initial longitudinal emittance, a downstream velocity...

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Bibliographic Details
Published in:Physical review letters 2017-04, Vol.118 (15), p.154802-154802, Article 154802
Main Authors: Maxson, Jared, Cesar, David, Calmasini, Giacomo, Ody, Alexander, Musumeci, Pietro, Alesini, David
Format: Article
Language:English
Subjects:
Bunching
Deflection
Emittance
Focusing
Holes
Laser beams
Radio frequencies
Relativistic electron beams
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Summary:Ultralow emittance (≤20  nm, normalized) electron beams with 10^{5} electrons per bunch are obtained by tightly focusing an ultrafast (∼100  fs) laser pulse on the cathode of a 1.6 cell radio frequency photoinjector. Taking advantage of the small initial longitudinal emittance, a downstream velocity bunching cavity is used to compress the beam to
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.118.154802