Table 1. Specifications of beamline 21-ID-D at the Life Sciences Collaboration Access Team.

Source	U33S
Undulator period (mm)	33
Number of undulator periods	60
Source size at 8 keV (µm)	σx: 277; σy: 11
Source divergence at 8 keV (µrad)	σx′: 11.7; σy′: 3.9
Monochromator	Double-crystal Si 〈111〉
Energy range (keV)	4.5–35
Energy resolution (ΔE/E)	2 × 10−4