LHC up and running at 13 TeV
The Large Hadron Collider (LHC) has recently collided protons at a new energy of 13 trillion electronvolts (TeV) for the first time in history. The previous collisions reached only eight TeV. The collisions are part of the testing process to ensure the LHC performs as expected.
Argonne has been a key partner in the LHC experiment with more than 14 physicists, five software professionals and several electrical engineers providing support. As part of a consortium now numbering more than 3,000 physicists, the Argonne team played significant roles in the design and construction of the detector named A Toroidal LHC AppartatuS (ATLAS).
Argonne physicists helped to design and construct the Hadronic Tile Calorimeter, which measures the energy produced after tiny atomic particles called hadrons strike the calorimeter array – part of the pink structure seen in the event picture below. ATLAS is one of seven particle detector experiments and standing 151 feet tall, 80 feet wide and 80 feet long, it has the largest volume of any particle physics detector in the world.
As the LHC is tuned up, billions of particle collisions will occur every second. The impact from these collisions produces new particles such as the elusive Higgs boson.
The smooth restart of the LHC is a testament to the skill of the scientists and engineers at CERN responsible for the consolidation of the accelerator for operation at this energy.
The restart heralds the beginning of a new era in exploring particle physics.
Argonne Distinguished Fellow James Proudfoot
View photos and up-to-date information on CERN’s website.