Record Details

Title:
Mapping few-femtosecond slices of ultra-relativistic electron bunches
Affiliation(s):
EuXFEL staff, Other
Author group:
X-Ray Photon Diagnostics
Topic:
Scientific area:
Abstract:
Free-electron lasers are unique sources of intense and ultra-short x-ray pulses that led to major scientific breakthroughs across disciplines from matter to materials and life sciences. The essential element of these devices are micrometer-sized electron bunches with high peak currents, low energy spread, and low emittance. Advanced FEL concepts such as seeded amplifiers rely on the capability of analyzing and controlling the electron beam properties with few-femtosecond time resolution. One major challenge is to extract tomographic slice parameters instead of projected electron beam properties. Here, we demonstrate that a radio-frequency deflector in combination with a dipole spectrometer not only allows for single-shot extraction of a seeded FEL pulse profile, but also provides information on the electron slice emittance and energy spread. The seeded FEL power profile can be directly related to the derived slice emittance as a function of intra-bunch coordinate with a resolution down to a few femtoseconds.
Imprint:
2017
Journal Information:
Scientific Reports, 7, 2431 (2017)
Related external records:
Language(s):
English


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 Record created 2017-06-13, last modified 2019-01-30

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