Examination of thermally induced deformation of a synchrotron radiation mirror using finite element analysis

A synchrotron radiation mirror is subjected to high thermal loads that cause thermal gradients and surface distortions. The thermally induced deformations can strongly affect the transmission and the energy resolution of insertion device beamlines. We have performed heat transfer calculations and mechanical analyses in order to evaluate surface slope errors of a grazing‐incidence mirror. The parameters for these calculations have been chosen according to what will be a typical working situation at the synchrotron radiation facility of Trieste, presently under design. The analysis has been carried out by using the finite element method.