↩ Back to Accelerator Facilities Map Please click the numbers on the map, and see the explanation windows 1. RF Electron Gun (electron source) Powerful laser is applied to an alloy to produce electrons. 2. Positron SourceElectron beam is applied to tungsten target to produce positrons. 3. Damping RingReduces the sizes of the positron beam before injecting the Main Ring. Facilities and Components RF Electron Gun Positron Source Damping Ring ↩ Back to Accelerator Facilities Map