Design explores the RF properties of an X-band accelerator, revealing implications for linearizing phase space in coherent light sources.
The paper presents the design of an X-band accelerating section for linearizing the longitudinal phase space in the Fractal Linac Coherent Light Source (SPARC). The nine cells structure, operating on the standing wave mode, is fed by a central coupler and has been designed to obtain a 42 MV/m accelerating gradient. The 2D profile has been determined using the electromagnetic codes Super fish and Oscar-2D while the coupler has been designed using HFSS. Bead-pull measurements made on a copper prototype have been done and the results are illustrated and compared with the numerical ones. Mechanical details of the realized prototype and RF properties of the structure as a function of the assembly characteristics are also discussed.
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D. et al. (2005) studied this question.
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