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Open Access Publications from the University of California

Intra-beam scattering for free electron lasers and its modeling in chicanes


Some FEL beamlines, especially those based on echo-enabled harmonic generation (EEHG), are sensitive to small, random jumps in energy generated by incoherent processes such as intra-beam scattering (IBS) and incoherent synchrotron radiation (ISR). Here, we examine the energy jumps caused by IBS when the local energy spread is a negligible factor compared to the transverse momentum spread, as is typical in accelerators. A simulation tool for modeling chicanes incorporating the effect of IBS is described.

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