The ELENA (Extra Low Energy Antiproton) facility is a particle accelerator located at CERN (the European Organization for Nuclear Research) in Switzerland. It was designed to provide antiprotons at very low energies, which are essential for certain types of experiments in particle and astrophysics. ELENA acts as an extension to the Antiproton Decelerator (AD) at CERN, which produces antiprotons from high-energy proton collisions.
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