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Figure 5
Top: TGU-based SASE-FEL single-pulse peak power as a function of the number of storage-ring FEL loops in units of longitudinal damping time, when each bunch is lasing every 1.5 revolution periods in the storage ring (the by-pass line-pulse-arcs beamline is assumed to cover a length equal to half of the ring circumference). FEL gain is rapidly suppressed by the growth of beam vertical emittance in the TGU, whose evolution is shown at the bottom. The low FEL peak power reached at equilibrium minimally disturbs the beam longitudinal emittance in the storage ring.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 25| Part 5| September 2018| Pages 1323-1334
https://doi.org/10.1107/S160057751800810X
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