The Large Hadron Collider is colliding particles at unprecedented energy, marking the start of the accelerator's second physics run

Follow all the action live on our blog "LHC Season 2: New frontiers in physics"

On 3 June, experiments at the LHC are set to collect their first physics data in two years, marking the start of the accelerator's second run

The MOEDAL, TOTEM and LHCf experiments are preparing to collect data from collisions in the LHC at 13 teraelectronvolts

Last night, for the first time, protons collided in the Large Hadron Collider (LHC) at the record-breaking energy of 13 TeV. See the first images

These first collisions at 13 TeV in the LHC are to set up systems that protect detectors from stray particles before they are fully switched on

Watch 11 physicists from the LHC experiments ALICE, ATLAS, CMS and LHCb explain what they hope to discover during the accelerator's second run

This morning, for the first time in two years, proton-proton collisions were delivered to the LHC experiments at injection energy: 450 GeV per beam

After both beams having been ramped to their full energy of 6.5 TeV, the last two weeks saw the beam commissioning process advancing on many fronts

The major news this week is, of course, the start of LHC Run 2

Last night the LHC operations team successfully circulated a beam at 6.5 TeV - one of many steps before the LHC can deliver collisions to experiments

With proton beams back in the LHC, operations experts have weeks of work to do before they can collide beams in experiments at the energy of 13 TeV