MO1L3
DESY, Hamburg, Germany
TU2A3
DESY, Hamburg, Germany
EuXFEL, Schenefeld, Germany
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MO1L3 |
Production and Characterization of Hard X-rays Beyond 25 keV | |
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| Dedicated R&D programs, aimed for delivering ultra-hard X-rays beyond 25 keV for advanced user experiments, have been launched at the European XFEL. Characterization of the electron beam and the photon beam transport to the instrumentation have been carried out. Given the very first experiments, optimized SASE intensities of 0.8 mJ at 24.58 keV and 0.3 mJ at 30.24 keV, both lasing at the fundamentals, have been simultaneously demonstrated at two hard X-ray beamlines of the facility. These experiments were carried out using optimized low-emittance electron beams based on existing undulators with a 4 cm period and 16.4 GeV electron beam energy. It has also been shown, that the transport of 30 keV photon beams to the user experiments was made possible. The obtained results will be presented. Further discussions on the realization of ultra-hard X-rays using advanced techniques, as well as improved longitudinal beam diagnostics of the facility will be given in detail. | ||
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Slides MO1L3 [8.172 MB] | |
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TU2A3 |
Opportunities and Challenges of the Hard X-ray Self-seeding System at the European XFEL | |
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| The Hard X-ray Self-seeding system (HXRSS) at the European XFEL provides users with longitudinally coherent X-ray FEL pulses with narrow bandwidth and high spectral density. With this setup we have achieved a maximum spectral density of about 1 mJ/eV at 9 keV. Combined with the MHz repetition rate, it opens up exciting new opportunities in a wide range of scientific fields. However, the increasing user demand and expectations also poses challenges in machine tuning and operation parameter ranges. We will summarize the HXRSS performance we have achieved and the user delivery experiences in the last two years. | ||
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