Comparison of hard x-ray self-seeding with sase after a monochromatoratlcls

J. Welch, F. J. Decker, J. Hastings, Z. Huang, A. Lutman, M. Messerschmidt, J. L. Turner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Self-seeding using hard x-rays was demonstrated at LCLS in January 2012 and produced a factor of 40-50 bandwidth reduction from normal SASE operation. For many hard x-ray users, the photon intensity after a monochromator is an important performance parameter, whether or not the beam is seeded or SASE. In this paper, we report results from a study of self-seeding performance using the Si (111) K-monochromator with a full bandwidth of 1.2 eV at 8.2 keV. These include a direct comparison of the average intensity of the monochromatized seeded beam with that of a monochromatized fully tuned-up SASE beam, in both cases using 150 pC bunch charge.

Original languageEnglish (US)
Title of host publicationFEL 2012 - 34th International Free Electron Laser Conference
Pages217-220
Number of pages4
StatePublished - Dec 1 2012
Externally publishedYes
Event34th International Free Electron Laser Conference, FEL 2012 - Nara, Japan
Duration: Aug 26 2012Aug 31 2012

Publication series

NameFEL 2012 - 34th International Free Electron Laser Conference

Other

Other34th International Free Electron Laser Conference, FEL 2012
CountryJapan
CityNara
Period8/26/128/31/12

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Welch, J., Decker, F. J., Hastings, J., Huang, Z., Lutman, A., Messerschmidt, M., & Turner, J. L. (2012). Comparison of hard x-ray self-seeding with sase after a monochromatoratlcls. In FEL 2012 - 34th International Free Electron Laser Conference (pp. 217-220). (FEL 2012 - 34th International Free Electron Laser Conference).