A beam will finally be circulated. The Large Hadron Collider
(LHC) will now be ready to go in September, according to CERN's latest estimate.
The LHC is the world's most powerful particle accelerator, producing beams seven times more energetic than any previous machine, and around 30 times more intense when it reaches design performance, probably by 2010. Housed in a 27-kilometer tunnel, it relies on technologies that would not have been possible 30 years ago. The LHC is, according to the press from CERN, its own prototype.
There have been numerous delays but most in the physics community had regarded previous estimates with caution anyway.(1)
Starting up such a machine is not as simple as flipping a switch and commissioning is a long process that starts with the cooling down of each of the machine's eight sectors, a process which had already been delayed.