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physics.acc-ph2025
FEL Gain Enhancement in an Optical Klystron
Anahit H. Shamamian, Hayk L. Gevorgyan, Lekdar A. Gevorgian
A system comprising two identical helical or planar undulators separated by a gap -- viz., an optical klystron (OK) -- is investigated. A formula for the frequency distribution of…
physics.acc-ph2024
Line shape of soft photon radiation generated at zero angle in an undulator with a dispersive medium
Hayk L. Gevorgyan, Koryun L. Gevorgyan, Anahit H. Shamamian +1
The problem of undulator radiation from a bunch of charged particles, taking into account a medium polarization, is considered. In a dispersive medium, at a zero angle, in addition…