Wednesday, September 10, 2008

LHC Scheme

The Large Hadron Collider (LHC) Scheme


The Large Hadron Collider (LHC) is being built in a circular tunnel 27 km in circumference. The tunnel is buried around 50 to 175 m. underground. It straddles the Swiss and French borders on the outskirts of Geneva.
It planned to circulate the first beams 10th September 2008. First collisions at high energy are expected about a month later with the first results from the experiments soon after.
The LHC is designed to collide two counter rotating beams of protons or heavy ions. Proton-proton collisions are foreseen at an energy of 7 TeV per beam.
The beams move around the LHC ring inside a continuous vacuum guided by magnets.
The magnets are superconducting and are cooled by a huge cryogenics system. The cables conduct current without resistance in their superconducting state.
The beams will be stored at high energy for hours. During this time collisions take place inside the four main LHC experiments.

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