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The £4 billion particle-collider faced more than a year of delays after a helium leak stymied the project in its first few days of operation. It is gradually being switched back on over the coming months but suffered a new setback on Tuesday morning. Scientists at the CERN particle physics laboratory in Geneva noticed that the system’s carefully monitored temperatures were creeping up. Further investigation into the failure of a cryogenic cooling plant revealed an unusual impediment.
A piece of crusty bread had paralysed a high voltage installation that should have been powering the cooling unit.
” Large Hadron Collider stalled again… thanks to chunk of baguette - Times Online