Speaker
Description
The fluctuation in electron time-of-flight during lattice transport is crucial for various applications,such as ultrafast electron diffraction, optical stochastic cooling in storage rings, and sustaining steady-state microbunching in storage rings. A major issue impacting the time-of-flight fluctuation of the electron beam during transport is the lattice’s nonlinear effects. In this study, we introduce a design concept aimed at reducing the electron beam’s time-of-flight fluctuation in an isochronous lattice up to the sub-attosecond level. This approach employs a high-order achromat lattice that effectively eliminates time-of-flight contributions arising from low-order nonlinearities. We also
present an optimized design example based on this concept, achieving approximately 0.3 attoseconds root-mean-square time-of-flight fluctuation (equivalent to 0.1 nm) with specific beam emittance values of ex~1 nm; ey ∼ 1 nm; and σδ ∼ 1 × 10−3.
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