Generating Single-Spike Hard X-Ray Pulses with Nonlinear Bunch Compression in Free-Electron Lasers

Physical Review Letters
S HuangDiling Zhu

Abstract

A simple method for generating single-spike hard x-ray pulses in free-electron lasers (FELs) has been developed at the Linac Coherent Light Source (LCLS). This is realized by nonlinear bunch compression using 20-pC bunch charge, demonstrated in the hard x-ray regime at 5.6 and 9 keV, respectively. Measurements show about half of the FEL shots containing a single-spike spectrum. At 5.6-keV photon energy, the single-spike shots have a mean pulse energy of about 10  μJ with 70% intensity fluctuation and the pulse full width at half maximum is evaluated to be at 200-as level.

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Citations

Apr 2, 2019·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·J P Marangos
Apr 2, 2019·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Ryan N CoffeeAgostino Marinelli
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