Radiation Sources on the Energy Recovery Linac Prototype at Daresbury Laboratory

The Energy Recovery Linac Prototype (ERLP) is currently being constructed at Daresbury Laboratory primarily to gain understanding of accelerator physics issues for the proposed Fourth Generation Light Source (4GLS). The radiation from two sources on ERLP, THz radiation from the last bending magnet in the bunch compressor, and the IR FEL radiation, will be used for machine diagnostics. Radiation from these sources will be transported into a ‘diagnostic room’ for power and spectral analysis. The THz radiation will also be used for end user experiments. The layout of the optical transport and detection systems will be presented. Results will also be given for the predicted performance of the optical beamline obtained using wavefront propagation.