Ray-tracing Simulations for Synchrotron Beamline Optics
The challenging in-place ESRF Upgrade Program foresees the reconstruction of about one third of the beamlines. The new beamlines will be very long (more than 100 m) allowing the routine use of micro- and nano-beams. This requires a very high demagnification of the ESRF source, which makes beamline optics design a fundamental step in the future availability of bright and small beam. In the design of these beamlines an intense use of computer tools for x-ray optics is necessary.
Ray-tracing has demonstrated to be a very reliable tool for designing and optimizing synchrotron beamlines. A substantial effort has been invested in modernizing the SHADOW package and facilitating its use. Some examples of recent simulations for the upgrade beamlines will be presented. New developments include simulations for refractive optics (CRL and transfocators), bent crystals, and the complementary use of ray-tracing with wave-optics propagation for studying partial coherence. In parallel, an ambitious project for the upgrade and integration of existing software and development of a new toolbox has started.