The LHC is the last element of CERN’s accelerator complex, which is a succession of machines with
increasingly higher energies. Everything starts in the 50 MeV linear accelerator (LINAC2), but a new
linear accelerator, the 160 MeV LINAC4, will replace LINAC2 in 2018, upgrading LHC injectors to
higher intensity and eventually increasing the luminosity of LHC. The aim of this article is briefly
introducing this new accelerator, and presenting a simple application of some fundamental laws of
magnetism to be taken to the secondary school classrooms.