In this episode of the Physics World Weekly podcast, online editor Margaret Harris chats about her recent trip to <a href="https://home.cern/">CERN</a>. There, she caught up with physicists working on some of the lab&#8217;s most exciting experiments and heard from CERN&#8217;s current and future leaders.

Founded in Geneva in 1954, today CERN is most famous for the <a href="https://home.cern/science/accelerators/large-hadron-collider">Large Hadron Collider</a> (LHC), which is currently in its winter shutdown. Harris describes her descent 100 m below ground level to visit the huge <a href="https://home.cern/science/experiments/atlas">ATLAS</a> detector and explains why some of its components will soon be updated as part of the LHC’s upcoming high luminosity upgrade.
She explains why new “crab cavities” will boost the number of particle collisions at the LHC. Among other things, this will allow physicists to better study how Higgs bosons interact with each other, which could provide important insights into the early universe.
Harris describes her visit to CERN’s Antimatter Factory, which hosts several experiments that are benefitting from a 2021 upgrade to the lab’s source of antiprotons. These experiments measure properties of antimatter – such as its response to gravity – to see if its behaviour differs from that of normal matter.
Harris also heard about the future of the lab from CERN’s director general <a href="https://home.cern/about/who-we-are/our-people/biographies/fabiola-gianotti">Fabiola Gianotti</a> and her successor <a href="https://physicsworld.com/a/mark-thomson-looks-to-the-future-of-cern-and-particle-physics/">Mark Thomson</a>, who will take over next year.

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