For the first time at CERN, an autopsy has been carried out on a radioactive beam dump. Inspection of the inner workings of the device helped the teams to find out more about how materials behave under the impact of high-energy beams During LS2, the LHC’s two external beam dumps were removed from the tunnel and replaced with spare ones. After ten years of operation, they were showing signs of degradation, notably nitrogen leaks. Before being installed, the spare dumps were modified and upgraded ...