[Ifeffit] Calibration for Sb K edge

Hello All, I have the CHESS F3 beamline set up with a dispersive monochromator for XANES at the Sb K edge with ~1 eV resolution. I didn't find a reference spectrum for Sb in Hephaestus, and would like to contribute one. But first I would like to have a little more confidence in the energy calibration. Does anyone know if 30.491 keV corresponds to the inflection point of mu for Sb(0) (or if not, what energy does)? Alternatively, does anyone know the energy of the Sb(0) white line (ideally with a reference)? Thanks, Darren