CERN has started dismantling critical sections of the Large Hadron Collider to replace its magnets with stronger, next-generation versions. This upgrade will allow tighter beam focusing and significantly increase collision rates, empowering groundbreaking physics experiments in the years ahead.
- New magnets produce 40% stronger magnetic fields
- Upgrades focus on maximizing collision frequency
- First replacement magnet arrives in 2029
What happened
The Large Hadron Collider (LHC), CERN’s flagship particle accelerator, is undergoing a significant upgrade as crews have begun disconnecting and removing key magnets known as inner triplets. These magnets are essential for focusing particle beams tightly just before collisions inside the ATLAS and CMS detectors. Removing and replacing these magnets with more advanced models marks the start of the High-Luminosity LHC (HiLumi LHC) project’s third long shutdown phase.
This operation involves swapping out existing niobium-titanium magnets for new niobium-tin superconducting coils, capable of generating magnetic fields about 40% stronger than current ones. The first of the new quadrupole magnets is expected to be installed in the tunnel by early 2029, with a total of 16 cryostats and 28 cryo-assemblies planned for installation, significantly enhancing the collider’s performance for future experiments.
Why it feels good
Upgrading the LHC’s magnets represents a remarkable technological leap that promises to deepen our understanding of the universe. By increasing the magnetic field strength, these new magnets can squeeze particle beams even tighter, leading to a higher number of collisions per second. More collisions mean that researchers gain access to far larger datasets, improving the chances of discovering new particles and physical phenomena.
For nearly two decades, the current generation of magnets served the LHC faithfully since its installation between 2005 and 2007. Transitioning to a superior generation of superconducting magnets is a celebration of scientific progress and innovation. It’s inspiring to see CERN continue its legacy of pushing the boundaries of particle physics and enabling scientists worldwide to explore the smallest components of the cosmos with unprecedented precision.
What to enjoy or watch next
The coming years will be exciting to watch as the High-Luminosity LHC upgrade progresses. With the new magnets installed around the ATLAS and CMS experiments, the improved collider is expected to deliver a remarkable increase in collision data. This will advance searches for new physics, helping scientists uncover mysteries like the nature of dark matter and other fundamental questions.
Meanwhile, the ALICE and LHCb experiments will also benefit from increased luminosity through complementary magnet upgrades, enabling their distinct physics programs to flourish. CERN’s ongoing work combines high-tech engineering with profound scientific curiosity, making it an inspiring center for discovery to follow for anyone fascinated by the universe’s underlying fabric.