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arXiv · 1203.6442

Pulse-front tilt caused by the use of a grating monochromator and self-seeding of soft X-ray FELs

Gianluca Geloni·Vitali Kocharyan·Evgeni Saldin
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Abstract

Self-seeding is a promising approach to significantly narrow the SASE bandwidth of XFELs to produce nearly transform-limited pulses. The development of such schemes in the soft X-ray wavelength range necessarily involves gratings as dispersive elements. These introduce, in general, a pulse-front tilt, which is directly proportional to the angular dispersion. Pulse-front tilt may easily lead to a seed signal decrease by a factor two or more. Suggestions on how to minimize the pulse-front tilt effect in the self-seeding setup are given.

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Gianluca Geloni, Vitali Kocharyan, Evgeni Saldin. 2012-03-29. Pulse-front tilt caused by the use of a grating monochromator and self-seeding of soft X-ray FELs. https://arxiv.org/abs/1203.6442

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