On September 26, 2023, the accelerator team at the CERN European Council for Nuclear Research in Geneva declared stable lead-beam conditions, ushering in the first data-taking campaign of lead-ion collisions in five years. From then until the late evening of October 29, the accelerator produced lead-ion collisions at the world’s highest-ever collision energy of 5.36 terra electron volts per colliding nuclear particle (nucleon–nucleon collision).
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Source: Phys.org