Journal
JOURNAL OF SYNCHROTRON RADIATION
Volume 26, Issue -, Pages 1835-1842Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S160057751900715X
Keywords
bending-magnet beamline; micro-XAFS; full-field nano-XAFS; full-field transmission X-ray microscopy; quick-XAFS; HEPS; XAFS
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Funding
- National Natural Science Foundation of China [11475213]
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An optical design study of a bending-magnet beamline, based on multi-bend achromat storage ring lattices, at the High Energy Photon Source, to be built in Beijing, China, is described. The main purpose of the beamline design is to produce a micro-scale beam from a bending-magnet source with little flux loss through apertures. To maximize the flux of the focal spot, the synchrotron source will be 1:1 imaged to a virtual source by a toroidal mirror; a mirror pair will be used to collimate the virtual source into quasi-parallel light which will be refocused by a Kirkpatrick-Baez mirror pair. In the case presented here, a beamline for tender X-rays ranging from 2.1keV to 7.8keV, with a spot size of approximately 7 mu m (H) x 6 mu m (V) and flux up to 2 x 10(12)photonss(-1), can be achieved for the purpose of X-ray absorption fine-structure (XAFS)-related experiments, such as scanning micro-XAFS and full-field nano-XAFS.
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