LHC tests hint that collider will run within two weeks

Physics Today : Tests on parts of the Large Hadron Collider over the weekend were fairly successful, suggest CERN documents .Particles up to 450 GeV were injected into four sectors of the storage ring (sector 23, 78, 67, and 56).For the first time—at 8:00pm local time on Saturday—the Compact Muon Solenoid (CMS) detector observed beam “splash” in the LHC, a major milestone for the experiment (see yellow indicators in image below).

Image credit: CERN

These injection tests are the final phase before the main test on 20 November in which particles will traverse across the entire ring. Actual collisions between two opposing beams should occur at roughly the same date.Over a 24-hour period on Monday, the sectors will be checked for radiation. Once the risk has been minimized, researchers and technicians will inspect the billion-dollar collider for any damage.The LHC will run at reduced power for the next two years, in an attempt to minimize risk to the magnets . Related News Picks Beam particles re-enter the LHC More LHC news picks Related Links The big bang at the LHC The Guardian’s science correspondent Ian Sample talks to Lynn Evans, project manager of Cern’s Large Hadron Collider, who relives the moment he found out something had gone horribly wrong