Slice energy spread measurement in the low energy photoinjector
Houjun Qian,
Mikhail Krasilnikov,
Anusorn Lueangaramwong
et al.
Abstract:Slice energy spread is one of the key parameters in free electron laser optimizations, but its accurate measurement is not straightforward. Two recent studies from high energy (>100 MeV) photoinjectors at SwissFEL and European XFEL have reported much higher slice energy spread than expected at their XFEL working points (200 -250 pC). In this paper, a new method for measuring slice energy spread at a lower beam energy (∼20 MeV) is proposed and demonstrated at the PhotoInjector Test facility at DESY Zeuthen (PIT… Show more
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