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Figure 6
Schematic (undulators not drawn to scale) of the horizontal electron orbit manipulation along the slicing straight section in the storage ring showing the displacement of the electron beam along the two undulators (blue bars) at a `femtobump' setting of −0.8 mrad relative to the regular orbit as controlled by the FOFB. The horizontal displacement (green) of the electron beam as measured by the beam position monitor readings (black dots) indicates the triangular bump along the radiator (UE56) with up to 2 mm horizontal displacements. Note that photons from displaced electons are not used, only femtosecond photons travelling on-axis. Positions of dipoles (including the short ring correctors) and sextupoles and quadrupoles are displayed in red.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 21| Part 5| August 2014| Pages 1090-1104
doi:10.1107/S1600577514012247
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