Design of the First Infrared Beamline at the Siam Photon Laboratory

This report presents the optical design and optical simulations for the first infrared beamline at the Siam Photon Laboratory. The beamline collects the edge radiation and bending magnet radiation, producing from the BM4 bending magnet of the 1.2 GeV storage ring of the Siam Photon Source. The optical design is optimized for the far‐ to mid‐infrared spectral range $(4000−100 cm−1)$ for microspectroscopic applications. The optical performance has been examined by computer simulations.