Photon Source in the U.S. Beamline % GUP % XAFS Notes 2-ID (XOR) > 50% 1/4 x-ray microprobe, XANES 4-ID (XOR) > 50% 1/2 XMCD, magnetic XAFS 5-BM (DNDCAT) = 25% 1/2 catalysis, enviro 9-BM (XOR) > 50% all can do S and Cl! 10-ID (MRCAT) = 25% most Catalysis, enviro, actinides. 11-ID (XOR) = 25% some time-resolved. 12-BM (XOR) > 50% most Catalysis, enviro, actinides. 13-BM (GSECARS) > 50% 1/4 geo / enviro 13-ID (GSECARS) > 50% 1/4 x-ray microprobe, geo / enviro 18-ID (BioCAT) = 25% some biological systems 20-BM (XOR/PNC) > 50% all general purpose XAFS 20-ID (XOR/PNC) > 50% most x-ray microprobe, geo / enviro, time-resolved. CAT A beamline operated by an outside team XOR A beamline operated by the APS 3 / 8 Writing User Proposals