Magnet for the Large Hadron Collider. The Large Hadron Collider (LHC) is the new accelerator for CERN, the European particle physics laboratory at Geneva. This is an endon view of one of the cylindrical bending magnets. A test cable is seen inserted into one of the twin beam pipes down which bunches of protons or heavy ions will be accelerated in opposite directions at very close to the speed of light. The beam pipes are encased in a cryostat jacket which will be cooled to 1. 8 degrees Kelvin using liquid helium. This allows superconducting wire to be used, making possible the very strong magnetic fields needed to bend the proton beams around the LHCs 27km circumference.