G-line: Same optics, new source, more flux!
Thanks to a little luck and a lot of clever engineering, the two, newly-installed canted undulators feed G-line without any modification to the G-line optics. This works because the two undulator beams, which are separated by 1 milliradian, fit almost perfectly within the much wider fan of radiation previously produced by the wiggler. With the wiggler installed, G2 and G3 shared the Northern half of the wiggler fan, while G1 used the Southern half.