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#280719 - 5th Jan 2009 9:09pm Hadron Collider prepared for June restart
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Work on the broken "Big Bang" machine will be stepped up in the new year with the aim of getting the £4 billion atom-smasher re-started in June.

The Large Hadron Collider suffered a catastrophic malfunction soon after being switched on amid a fanfare of publicity last September.

A faulty electrical connection led to a leak of super-cold helium causing damage estimated at £20 million.

As a result, 53 of the magnets used to accelerate sub-atomic particles around the machine's 17-mile underground tunnel have had to be brought to the surface for repair or cleaning.

Engineers have now designed fail-safe protection systems to ensure that a similar accident never happens again.

Electronic monitors will provide early warnings of hazards, and the magnet network will also be fitted with pressure-release valves to confine the damage caused by any future leak.

The LHC, the biggest atom-smashing machine ever built, straddles the borders of France and Switzerland and is operated by Cern, the European particle physics laboratory near Geneva.

It is designed to simulate the "Big Bang", which started the universe 15 billion years ago, by smashing sub-atomic particles together at energies never before achieved.

Scientists hope this will help them find the answers to big questions, such as what causes mass and whether hidden dimensions exist in space.

There is also a possibility of tiny black holes being created in the Collider. Experts insist that if this happens, they will pose no threat.

LHC project leader Lyn Evans said: "We have a lot of work to do over the coming months, but we now have the roadmap, the time and the competence necessary to be ready for physics by summer. We are currently in a scheduled annual shutdown until May, so we're hopeful that not too much time will be lost."

The total cost of repairing and refitting the machine is likely to exceed £30 million.

Scientists hope to have the LHC working again in June, but its first experiments are not likely to get under way until July.

Liquid helium is used to cool the machine's magnets to just 1.8C above absolute zero, nature's lowest possible temperature. This allows them to be "superconductors" through which electricity can flow without resistance.

When the helium leaked and evaporated it caused a number of the sensitive magnets to warm up and suffer damage.

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#280794 - 6th Jan 2009 12:00am Re: Hadron Collider prepared for June restart [Re: ]
Wench Offline

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Registered: 9th Aug 2008
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No sign of a credit crunch at Cern then raftl

I wonder if they will have the webcam on it again think
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#280832 - 6th Jan 2009 8:33am Re: Hadron Collider prepared for June restart [Re: Wench]
MissGuided Offline

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Registered: 18th Jul 2008
Posts: 9995
Loc: Back of the wardrobe
Maybe that's what's causing the credit crunch - its Gordon Brown's doomsday device - he's sent all our reserves to Switzerland to be swallowed up.

And once its running he'll start sending the unemployed over there on 'special trips', and they'll mysteriously disappear. That should help the unemployment figures.

Oh hold on - that sounds too much like the last plot in Dr Who season 4 - silly me - the lines of reality sometimes blur a little smile
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