Another British physicist working at CERN is Brian Cox who is at CERN to work on the ATLAS experiment. CERN runs numerous experiments attempting to discover different subatomic particles. ATLAS is described best from this definition:
ATLAS (A Toroidal LHC ApparatuS) is one of the seven particle detector experiments (ALICE, ATLAS, CMS, TOTEM, LHCb, LHCf and MoEDAL) constructed at the Large Hadron Collider (LHC), a particle accelerator at CERN (the European Organization for Nuclear Research) in Switzerland. The experiment is designed to take advantage of the unprecedented energy available at the LHC and observe phenomena that involve highly massive particles which were not observable using earlier lower-energy accelerators. It might shed light on new theories of particle physics beyond the Standard Model.
CERN’s supercollider – Brian Cox