期刊
JOURNAL OF SYNCHROTRON RADIATION
卷 26, 期 -, 页码 333-338出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600577518018362
关键词
X-ray free electron laser; X-ray optics; pump-probe X-ray measurements
资金
- Japan Synchrotron Radiation Research Institute [2018A8080] Funding Source: Medline
X-ray optics were implemented for advanced ultrafast X-ray experiments with different techniques at the hard X-ray beamline BL3 of SPring-8 angstrom ngstrom Compact free-electron LAser. A double channel-cut crystal monochromator (DCCM) and compound refractive lenses (CRLs) were installed to tailor the beam conditions. These X-ray optics can work simultaneously with an arrival-timing monitor that compensates for timing jitter and drift. Inner-walls of channel-cut crystals (CCs) in the DCCM were processed by plasma chemical vaporization machining to remove crystallographic damage. Four-bounced reflection profiles of the CCs were investigated and excellent diffraction qualities were achieved. The use of CRLs enabled two-dimensional X-ray focusing with a spot size of approximate to 1.5 mu m x 1.5 mu m full width at half-maximum, while keeping reasonable throughputs for a wide photon energy range of 5-15keV.
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