The Large Hadron Collider is running into problems again. And not just with people who don’t like its name.

Given the Hammer of the Higgs has only been switched on for a week it’s a bit embarrassing that so far it has been hacked into and one of its transformers has gone wrong. Now a problem with a magnet has sent helium from the cooling system leaking into the tunnels of CERN.

The Times says:

While a faulty transformer that had hindered progress for much of the past week has now been replaced, as first reported by The Times, the magnet failure is potentially more serious. Supercooled helium that chills the LHC’s magnets to 1.8C above absolute zero was released into the accelerator’s 17-mile (27km) tunnel in the incident.