When the Large Hadron Collider (LHC) begins Run 3 next year, operators aim to increase the energy of the proton beams to an unprecedented 6.8 TeV. This means the thousands of superconducting magnets, whose fields direct the beams around their trajectory, need to grow accustomed to much stronger currents after a long period of inactivity during LS2. This is done through an ongoing “magnet training” process.
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Source: Phys.org