Table 1. Positions of additional beamline components in the optics hutch.

Component	Distance from source (m)	Use	Notes
Collimators	22.0, 24.4, 28.7	Blocks Brehmstrahlung	Three collimators to allow only synchrotron beam to sample
Beam shape and intensity monitors	23.6, 33.1	Image beam and measure intensity	Camera images beam on screen, photodiode detects direct or scattered X-rays
Quadrant beam position monitors	28.0, 32.6	Position and intensity of beam	After monochromator and mirrors
Calibration foils	32.9	Energy calibration	Different foil materials to calibrate monochromator
Shutter	33.5	Final shutter	Essential part of personnel safety system