4W1B is a X-ray fluorescence microanalysis beamline and locates at No.12 experimental hall. It is based on a hard X-ray beamline with wiggler magnet and is dedicated to X ray micro-analysis in biology and material science, and ultra-trace elemental analysis. The incident X-ray energy is monochromatized by W/B4C Double-Multilayer-Monochromator (DMM) at 15keV and is focused down to 50 μm in diameter by the polycapillary lens. The micro-X-ray fluorescence microspectroscopy and two-dimensional mapping experiments can be performed at 4W1B station. This beamline only runs in the dedicated mode of synchrotron radiation.
Supported techniques:
Micro-XRF and micro-XANES
Grazing incidence and emergence analysis
Resonant inelastic X-ray scattering
Scopes:
Geoscience
Biomedicine
Environmental science
Materials
Archeology
Physics
Beamline equipments
Sample scanning table A, B and C
A: translational range 60mm×60mm×25mm ; slewing angle 270°
B: translational range 30mm×30mm×100mm ; slewing angle 360°
C: translational range 45mm×45mm×45mm
Si (Li) Solid State Detector and spectrometer analytical system
Si diode detector
Stereoscopic microscope A：magnification times-50
Microscope B：spatial resolution-1μm，magnification times-450
Ionization chamber beam-monitor system
Beamline Specs
Source Wiggler
Focus Mode quasi monochromatic light
Energy Range 8-15 keV
Flux (photons/sec) ＞1×1012 @ 15keV
Resolution (ΔE/E) ＜7×10-2
Beam Size (H×V) 50μm
Detectability Dozens of ppm
Focus Mode monochromatic light
Energy Range 5-18 keV
Flux (photons/sec) ＞1×1013 @ 15keV
Beam Size (H×V) 50μm
