The Antiproton Decelerator started operation in the year 2000.
Notes on verification
Confirmed by CERN's official sources and multiple independent technical documents; minor discrepancy in some academic papers citing 1999 as commissioning start, but consensus supports 2000 for operational start.
Sources
- Antiproton Decelerator (en.wikipedia.org)
- https://home.cern/science/accelerators/antiproton-decelerator/ (home.cern)
- https://cds.cern.ch/record/561996?ln=en (cds.cern.ch)
- https://home.cern/news/news/accelerators/ls2-report-rejuvenation-antiproton-decelerator (home.cern)
- https://cerncourier.com/a/cern-soups-up-its-antiproton-source/ (cerncourier.com)