The main components of the I911-3 beamline. The components shown are the wiggler, beryllium windows (Be), slits, mirrors (M1 and M2), double-crystal monochromator (DCM), beam position monitors (BPM), fluorescence screens (FS), shutters (Sh), scintillation detectors (Sc.D), filters, goniostat (MD2) and detector. The upper inset shows components in the experiment hutch, which is shown with schematic walls in the lower figure. The sample changer is not included in the figure. The front-end is situated between the wiggler and the first beryllium window (Be1), and the optics for I911-1, 2, 4 and 5 between Be1 and Be2. Illustration by Johnny Kvistholm.