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The Large Hadron Collider has restarted for the first time in three years


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The Large Hadron Collider (LHC) has been fired up again after a three year break. CERN, the European Organization for Nuclear Research, shut down the collider in 2019 to make the instruments more sensitive. The LHC works by smashing atoms together to break them apart and discover the subatomic particles that exist inside them, and how they interact. The Higgs boson particle is thought to be vital to the formation of the universe after the Big Bang 13.7 billion years ago. A batch of collisions observed at CERN between 2010-2013 brought proof of the particle's existence.


But plenty remains to be discovered by particle physicists - and upgrades will allow them to peer deeper into the hidden quantum realm. The team plan to run the experiment again using the more sensitive equipment on the revamped LHC. Mike Lamont, CERN's Director for Accelerators and Technology, said the LHC will operate at an even higher energy and, thanks to major improvements in the injector complex, it will deliver significantly more data to the upgraded LHC experiments. This latest upgrade marks the start of the third run of the LHC, and included the installation of more powerful magnets that squeeze protons inside the collider into denser beams - increasing the collision rate of particles.




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