4B7B is a soft X-ray optics beamline and locates at No.12 experimental hall. It is a soft X-ray  beamline and applied to X-ray absorption spectroscopy(XANES) and detector calibration.

Supported techniques:

Soft X-ray spectroscopy

X-ray magnetic circular dichroism

Optical metrology

Scopes:

Materials

X-ray metrology

Beamline equipments:

Fluorescence detector

Cryogenic equipment

Magnetic field device

Beamline Specs：

Source                          BM

Energy Range                    50-1700 eV  

Flux (photons/sec)              10¹⁰ @ Fe L edge

Resolution (E/ΔE)               1000

Beam Size (H×V)                 Conducting sample 1mm×0.1mm   nonconducting sample 4mm×2mm