Run 3, a new period of data taking, begins in July 2022 for the experiments at the Large Hadron Collider (LHC), after more than three years of upgrade and maintenance work. Beams have already been circulating in CERN’s accelerator complex since April. The LHC will now run for close to four years at the record collision energy of 13.6 trillion electronvolts (TeV) – 6.8 TeV per beam.
In preparation for data taking, the four big LHC experiments performed major upgrades to their data readout and selection systems, with new detector systems and computing infrastructure. The changes will allow them to collect significantly larger data samples, of higher quality than previous runs.