Elettra – Sincrotrone Trieste S.C.p.A. is a company of national interest managing an international research center devoted to materials science through advanced light sources. It operates two major facilities: FERMI, a free-electron laser, and Elettra, which, after more than thirty years of service, was shut down on July 2, 2025, to allow for the construction of Elettra 2.0, a state-of-the-art fourthgeneration synchrotron radiation source. The reporting period from July 2024 to September 2025 thus encompassed a pivotal transition: the final phase of experiments at Elettra and the implementation of the Elettra 2.0. Once completed, the new source will deliver light of far greater brightness and coherence, enabling highly precise measurements and real-time investigations of dynamic processes at the atomic and molecular scale. These advances will broaden opportunities in structural biology, nanotechnology, materials science, quantum research, and energy-related studies. In parallel, FERMI continues to provide world-class capabilities. By producing ultrashort pulses of coherent light across the ultraviolet to soft X-ray range, it remains a unique tool for time-resolved experiments. FERMI allows researchers to track ultrafast phenomena such as chemical reactions and structural transformations with exceptional temporal resolution, opening insights into processes that cannot be captured by conventional techniques. Elettra 2.0 is not only a technical upgrade but also a transformation of the entire campus. Among the most recent developments is the inauguration of the LB building, which hosts the magnet measurement laboratory. This facility is essential for the project, as it enables the precise characterization and alignment of the hundreds of magnets that will constitute the new storage ring. Accurate field measurements and multipole error corrections are critical to meet the stability and ultra-low emittance targets of the multi-bend achromat design. These expansions strengthen the center’s ability to support cutting-edge research and provide modern environments for staff and collaborators. From a technological perspective, Elettra 2.0 will adopt a multi-bend achromat lattice that will radically reduce emittance. This design, combined with new in vacuum undulators and superconductive bending magnets, advanced detectors, and upgraded beamlines, will make it possible to extend research into new areas, enabling scientists to observe phenomena in real time and under conditions relevant to applications in health, energy, and advanced materials. Together, FERMI and the upcoming Elettra 2.0, supported by more than 30 experimental stations and specialized laboratories in chemistry, biology, materials science, electronics, and computing, will create a multidisciplinary environment for frontier research. The integration of the two complementary light sources, one a free-electron laser and the other a synchrotron, will offer unique opportunities for combined and comparative studies. Beyond scientific research, Elettra Sincrotrone Trieste will actively continue to promote technology transfer advanced training, and international international collaboration, as demonstrated by the long list of partnerships and alliances in the next section. Elettra and FERMI lightsources Facts & Figures Elettra Highlights 2024–2025 160
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