Design optimization of an X-band based FEL
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A design effort for a new generation of compact, costeffective, power-efficient FEL facilities, based on X-band technology, has been launched. High-frequency X-band acceleration implies strong wakefields, tight alignment and mechanical tolerances, and challenging stability issues. In this paper a design is proposed for the injector and the linacs, including the two bunch compressors. RF gun and injector simulations have been performed, successfully meeting the stringent requirements in terms of minimum projected emittance, sliced emittance and minimum bunch length. In the design of the linac and bunch compressors wakefield effects and misalignment have been taken into account. Start-toend tracking simulations through the optimized lattice are presented and discussed. Copyright © 2016 CC-BY-3.0 and by the respective authors.