Computer simulations and laboratory experiments done in Switzerland have advanced the design of a new type of positron source that could be used in next-generation lepton colliders such as the proposed Future Circular Collider (FCC) at CERN. Developed by Nicolas Vallis and colleagues at the Paul Scherrer Institute (PSI), the design uses high-temperature-superconductor magnets to collect positrons and focus them into a tight beam. The team says that its source could be fully operational by 2026.

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