The LHC is preparing to restart at almost double the collision energy of its previous run. The new energy will allow physicists to check previously untestable theories, and explore new frontiers in particle physics. When the LHC is on, counter-rotating beams of particles will be made to collide at four interaction points 100 metres underground, around which sit the huge detectors ALICE, ATLAS, CMS and LHCb. In the video above, engineers and technicians prepare these four detectors to receive the

The intensity rises in the Large Hadron Collider. More and more protons are circulating, pushing up the collision rate in the experiments to record highs. Read more: http://cern.ch/go/j9mp Video credit ©CERN/Daniel Dominguez/Arzur Catel-Torres - for terms of use see http://copyright.web.cern.ch/ | CERN

409K views · 2K reactions | The largest machine ever built is shutting down for 2 years of upgrades. We take you inside its underground chambers in this 360-degree video, where discoveries that challenge our understanding of the universe take place. Read our story: https://nyti.ms/2T2ts8r | The New York Times | Facebook