Proceedings PaperElectron Beam Diagnostics For Free-Electron Lasers
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Free-Electron Laser (FEL) experiments place extreme demands upon the accelerator that provides the electron beam that drives the wiggler. A wide range of diagnostic devices is needed to determine the properties of the accelerated beam, to assist in adjusting the accelerator and the associated beamline, and to monitor the changes to the beam that occur after it interacts with the laser beam in the wiggler. We explain the FEL physics issues that set such severe requirements and describe a representative selection of diagnostic devices that are currently in use to provide the measurements.