期刊
JOURNAL OF SYNCHROTRON RADIATION
卷 28, 期 -, 页码 1393-1416出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600577521007335
关键词
high energy density; X-ray free-electron lasers; warm dense matter; high-pressure science; relativistic laser-matter interaction
资金
- Deutsche Forschungsgemeinschaft [FOR 2440, KO-5262/1]
- Bundesministerium fur Bildung und Forschung [05K19PE2, 05K13PM1, 05K10PM2, AP 2621-2]
- Volkswagen Foundation
- Centre National de la Recherche Scientifique
The European XFEL's HED scientific instrument delivers intense ultrashort and coherently X-ray radiation, enabling groundbreaking experiments in extreme conditions of matter. Current research at HED includes investigating extreme states of matter using intense laser pulses or X-ray methods.
The European XFEL delivers up to 27 000 intense (>10(12) photons) pulses per second, of ultrashort (<= 50 fs) and transversely coherent X-ray radiation, at a maximum repetition rate of 4.5 MHz. Its unique X-ray beam parameters enable groundbreaking experiments in matter at extreme conditions at the High Energy Density (HED) scientific instrument. The performance of the HED instrument during its first two years of operation, its scientific remit, as well as ongoing installations towards full operation are presented. Scientific goals of HED include the investigation of extreme states of matter created by intense laser pulses, diamond anvil cells, or pulsed magnets, and ultrafast X-ray methods that allow their diagnosis using self-amplified spontaneous emission between 5 and 25 keV, coupled with X-ray monochromators and optional seeded beam operation. The HED instrument provides two target chambers, X-ray spectrometers for emission and scattering, X-ray detectors, and a timing tool to correct for residual timing jitter between laser and X-ray pulses.
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