3 days ago
1971: The world’s first hadron collider 📸⠀
#TBT #ThrowbackThursday ⠀
This picture shows the Intersecting Storage Rings (ISR), a former particle accelerator at #CERN. In fact, the ISR was the world’s first hadron collider, having provided both proton–proton and proton–antiproton collisions. The ISR was built to look for particles like quarks and W bosons, which had not been observed then, as well as exotic particles like magnetic monopoles.⠀
The ISR shut down in 1984 and CERN’s focus shifted to the planned Large Electron–Positron Collider. Today, the ISR tunnel is used for storage and magnet work.