Design of wide-range energy material beamline at the Shanghai Synchrotron Radiation Facility

We report the design of a wide-range energy material beamline(E-line)with multiple experimental techniques at the Shanghai Synchrotron Radiation Facility.The undulators consisted of an elliptically polarizing undulator and in-vacuum undulator that generate the soft and hard X-rays,respectively.The beamline covered a wide energy range from130to18keV with both a high photon flux(>1012phs/s with exit silt30μm in soft X-ray and>5×1012phs/s in hard X-ray within0.1%BW bandwidth)and promising resolving power(maximum E/△E>15,000in soft X-ray with exit silt30μm and>6000in hard X-ray).Moreover,the beam spots from the soft and hard X-rays were focused to the same sample position with a high overlap ratio,so that the surfaces,interfaces,and bulk properties were characterized in situ by changing the probing depth.