How many particle collisions does LHC do on average each day?

Question: How many particle collisions does LHC do on average each day?
- Keywords:
  collision,
  LHC
Asked by anon-351151 on 7 Mar 2023.
- Joel Goldstein answered on 7 Mar 2023:
  
  When the LHC is running, bunches of particles cross at the centre of the CMS and ATLAS detectors 40 million times a second, and in each bunch crossing about 50 individual proton-proton collisions can occur. So that’s about two billion collisions per second for each detector!
  
  A “fill” lasts for most of the day (although the intensity does drop off), so at a rough guess that’s about 50 trillion collisions per day for each experiment.