1W1A is a diffuse X-ray scattering beamline which locates at No. 12 experimental hall of Beijing Synchrotron Radiation Facility (BSRF). It provides X-ray scatterings (XRS), diffraction (XRD), reflection (XRR) and standing wave (XSW) techniques to various users in scientific community of condensed matter physics and materials science. It operates at 8.05 keV and 13.9 keV with double focusing monochromatic beam. Structure characterization of thin films and crystals can be carried out on this beamline. It can run both in the dedicated mode and in the parasitic mode of Beijing Synchrotron Radiation Facility.

Supported Techniques:

• X-ray scattering (XRS): diffuse x-ray scattering (DXRS), grazing incidence small-angle X-ray scattering (GISAXS)

• X-ray diffraction (XRD), including grazing incidence x-ray diffraction (GIXRD), wide-angle x-ray diffraction (WAXRD), reciprocal space mapping (RSM), and so on;

• X-ray reflection (XRR): including low-angle x-ray reflectivity and extended x-ray reflection (CTR analysis)

• X-ray standing wave (XSW)

Applications:

• Defect structure of single crystals and thin films;

• Defects in crystal materials, thin-film materials, surface/interface of multilayer film and nano-materials .

Detector and Sample environment devices:

• Huber five-circle x-ray diffractometer;

• Area detectors：Mar345 Imaging Plate, Pilatus3X 100K-A

• Point detectors: YAP 9910, NaI(Tl) detector

• X-ray fluorescence Silicon drift detector

• High temperature sample environment (20~1100ºC);

• Low temperature sample environment (-100ºC~350ºC)

• Electric-field device: 0~50000 V

• Magnetic-field device: 0~0.43 Tesla

Beamline Controls and Data Acquisition:

Linux operation system, Spec, Mar345, PyMCA

Beamline Specs

X-ray Source:   Wiggler

Energy Range:        8.05 keV

Energy resolution (ΔE/E):  4.4×10^-4

Flux (photons/sec):    ＞1×10¹¹@8.05 keV

Beam Size (H×V):      adjustable, typical values: 0.8mm x 0.4 mm