Active optics systems at FERMI free electron laser

FERMI is the first seeded EUV-SXR free electron laser (FEL) user facility operated at Elettra Sincrotrone Trieste. Two of the three already operating beamlines, namely LDM (Low Density Matter) and DiProI (Diffraction and Projection Imaging), use a Kirkpatrick-Baez (K-B) active X-ray optics system for focusing the FEL pulses onto the target under investigation. For the third beamline, TIMEX, we have installed an ellipsoidal mirror as focusing system, and in addition we are also developing an active optics system to be mounted along this beamline, in order to properly shape the spatial photon beam profile at the sample.