Simulation and design of an infrared beamline for SESAME (Synchrotron-Light for Experimental Science and Applications in the Middle East)

The infrared synchrotron radiation emitted from an edge and constant field radiation of a bending magnet, at the third generation storage ring SESAME, which is in construction, is studied in detail by the “Synchrotron Radiation Workshop” (SRW) computer code and ray-tracing techniques. Constant magnetic field and edge infrared emissions are taken into account in the project of the bending vacuum chamber. Emission angles of 15×39 mrad2 (vertical×horizontal) have been considered giving a photon flux in the 1013 photons/sec/0.1%bw range. The beamline design is presented, with details of the first extraction mirror, its heat load and operating procedure. The beamline has been designed to produce a dual beam in the experimental floor, which enables serving in the future, two independent instruments.