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Title: Analytical Scaling Laws for Radiofrequency-Based Pulse Compression in Ultrafast Electron Diffraction Beamlines
We present an envelope equation-based approach to obtain analytical scaling laws for the shortest pulse length achievable using radiofrequency (RF)-based bunch compression. The derived formulas elucidate the dependencies on the electron beam energy and beam charge and reveal how relativistic energies are strongly desirable to obtain bunches containing 1 million electrons with single-digit femtosecond pulse lengths. However, the non-linearities associated with the RF curvature and the beam propagation in drift spaces significantly limit the attainability of extreme compression ratios. Therefore, an additional higher frequency RF cavity is implemented, which linearizes the bunch compression, enabling the generation of ultrashort beams in the sub-femtosecond regime.  more » « less
Award ID(s):
1828705
PAR ID:
10568501
Author(s) / Creator(s):
;
Publisher / Repository:
Licensee MDPI, Basel, Switzerland
Date Published:
Journal Name:
Instruments
Volume:
7
Issue:
4
ISSN:
2410-390X
Page Range / eLocation ID:
49
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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