MOSCOW, June 8 (RIA Novosti) - Scientists...

Scientific experiments on the world"s largest particle accelerator were suspended due to a helium leak into the tunnel housing the device and a subsequent electrical fault. The collider is scheduled to restart in September.

"In Sector 3-4 the full length of the beam lines have been closed and work is currently ongoing to finish the final electrical interconnections. Once that is completed, work will start to close up the W bellows - the large accordion-shaped sleeves between two magnets - and preparations can start to cool the sector down," the statement said.

The collider, located 100 meters underground with a circumference of 27 km, enables scientists to shoot sub-atomic particles round an accelerator ring at almost the speed of light, channeled by powerful fields produced by superconducting magnets.

In order to fire beams of protons round the vast underground circular device the entire ring must be cooled by liquid helium to minus 271 degrees C, just two degrees

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