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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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Just Chillin': Large Hadron Collider Cold and Ready to Start Up Again
16 October 2009 2:34 pm
After 13 months of repairs and modifications, the world’s largest particle smasher is once again ready to start circulating particles, officials at the European particle physics laboratory, CERN, near Geneva, Switzerland, announced today. The guts of the Large Hadron Collider’s (LHC’s) more than 1700 large superconducting magnets have been cooled with liquid helium to a frigid 1.9 K, and now that the 35,000 metric tons of hardware are cold, physicists can soon resume feeding particles into the machine’s twin rings, says CERN spokesperson James Gillies. “Were back to the more-routine steps that we went through last year,” he says. “So the first injection tests should begin next week.”
The LHC is designed to smash protons together at energies seven times as high as any previous particle collisions in hopes of discovering new particles and even new dimensions of space. The $5.5 billion accelerator broke down last fall just 9 days after physics first passed particles all the way around its two rings, and researchers have been busy fixing it ever since. Physicists are on track to have beams zipping through LHC’s two rings in late November and to collide the counter-circulating beams at a low energy in December. But with many systems to check—including new systems to protect the machine against a repeat of last year’s catastrophe—researcher may not achieve higher energy collisions for data taking until early next year, Gillies says. “There’s still a possibility for December, but more realistically it’s looking like January,” he says. Even then, just to be on the safe side, officials have limited the energy to half of the LHC’s design maximum.