The beams inside the LHC are made to collide at four locations around the accelerator ring, corresponding to the positions of four particle detectors – ATLAS, CMS, ALICE and LHCb.
The LHC injector chain has been switched to a new beam production scheme to explore its potential to produce more collisions in the LHC and to compare its performance to that of the standard LHC beam
Beam commissioning is progressing well across the entire accelerator complex, but challenges have arisen, in particular in Linac4, highlighting the complexities involved