First positrons for the Future Circular Collider
At the Paul Scherrer Institute in Villigen, Switzerland, the first positrons were produced at a test source for CERN’s proposed Future Circular Collider. The source, installed at SwissFEL, uses a high‑temperature superconducting capture solenoid capable of about 15 tesla to collect positrons from a tungsten target struck by accelerated electrons. The achievement demonstrates the feasibility of the positron‑source concept and marks a milestone toward the technologies needed for electron‑positron colliders.
At the Paul Scherrer Institute in Villigen, Switzerland, the first positrons were produced at a test source for CERN’s proposed Future Circular Collider. The source, installed at SwissFEL, uses a high‑temperature superconducting capture solenoid capable of about 15 tesla to collect positrons from a tungsten target struck by accelerated electrons. The achievement demonstrates the feasibility of the positron‑source concept and marks a milestone toward the technologies needed for electron‑positron colliders.
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