Future generations of particle colliders will demand abundant sources of positrons—the antimatter partners of electrons. The usual method for producing them involves smashing electrons into a target and corralling the outgoing positrons with magnets, but in its current form, this approach doesn’t come close to meeting the demands of future experiments. Researchers at the Paul Scherrer Institute (PSI) in Switzerland have now made an important advance in positron production with a magnet design that uses high-temperature superconductors. Their preliminary measurements, announced in a press release, show that this technology can be scaled up to feed positrons to CERN’s Future Circular Collider (FCC).

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