Large Hadron Collider experiment gets “heart transplant”

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http://www.bbc.com/news/science-environment-39129598

One of the Large Hadron Collider’s huge experiments has been given what’s described as a “heart transplant”.

Officials said the replacement of a key component inside the CMS experiment represented the first major upgrade to the LHC – the world’s biggest machine.

Engineers have been carefully installing the new “pixel tracker” in CMS in a complex and delicate procedure on Thursday 100m underground.

It should boost the hunt for signs of new physics phenomena.

The LHC is a particle accelerator that pushes two particle beams to near the speed of light and smashes them together so that scientists can look for signs of new physics phenomena in the debris – including new sub-atomic particles.

More than 1,200 “dipole” magnets steer the beam around a 27km-long circular tunnel under the French-Swiss border. At certain points around the ring, the beams cross, allowing collisions to take place. Large experiments like CMS…

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