- The Washington Times - Sunday, September 21, 2008

GENEVA | The world’s largest atom smasher - which was launched with great fanfare earlier this month - has been damaged worse than previously thought and will be out of commission for at least two months, its operators said Saturday.

Experts have gone into the 17-mile circular tunnel housing the Large Hadron Collider under the Switzerland-France border to examine the damage that halted operations about 36 hours after its Sept. 10 startup, said James Gillies, spokesman for CERN, the European Organization for Nuclear Research.

“It’s too early to say precisely what happened, but it seems to be a faulty electrical connection between two magnets that stopped superconducting, melted and led to a mechanical failure and let the helium out,” Mr. Gillies told the Associated Press.

Mr. Gillies said the damaged sector will have to be warmed up well above the absolute zero temperature used for operations so that repairs can be made - a time-consuming process.

“A number of magnets raised their temperature by around 100 degrees,” Mr. Gillies said. “We have now to warm up the whole sector in a controlled manner before we can actually go in and repair it.”

The $10 billion particle collider - in the design and construction stages for more than two decades - is the world’s largest atom smasher. It fires beams of protons from the nuclei of atoms around the tunnels at nearly the speed of light.

It then causes the protons to collide, revealing how the tiniest particles were first created after the “big bang,” which many theorize was the massive explosion that formed the stars, planets and everything.

Mr. Gillies said such failures occur frequently in particle accelerators, but it was made more complicated in this case because the Large Hadron Collider operates at near absolute zero, colder than outer space, for maximum efficiency.

It was at first thought the failure of an electrical transformer that handles part of the cooling was the problem, CERN said. That transformer was replaced last weekend and the machine was lowered back to operating temperature to prepare for a resumption of operations.

But further inspections determined that the problem was worse than initially thought, Mr. Gillies said.

The CERN experiments with the particle collider hope to reveal more about “dark matter,” antimatter and possibly hidden dimensions of space and time.

They could also find evidence of a hypothetical particle - the Higgs boson - which is sometimes called the “God particle” because it is believed to give mass to all other particles, and thus to matter that makes up the universe.

Smaller colliders have been used for decades to study the makeup of the atom. Scientists once thought protons and neutrons were the smallest components of an atom’s nucleus, but experiments have shown that protons and neutrons are made of quarks and gluons and that there are other forces and particles.

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