STATUS OF LHC PROGRAM AND MAGNET DEVELOPMENT

The Large Hadron Collider (LHC) is a superconducting accelerator/colli der for protons, heavy ions and electron-proton collisions in the mult i-TeV energy range, which will be installed at CERN in the 27 km tunne l of LEP. This new facility will mainly consist of a double ring of hi gh field superconducting magnets operating in superfluid helium at the temperature of 1.9 K. To reach the wanted beam energy (7 TeV for prot ons) the main dipole magnets will operate at about 8.4 T and the quadr upoles at 220 T/m field gradient. These main magnets have a two-in-one configuration with the magnetic channels for the two beams placed in a common yoke and cryostat. The LHC will have more than 10,000 superco nducting magnetic units. The arcs of the machine will require about 12 50, 14 m long dipoles and 400, 3 m long quadrupoles. After a general o utline of the project with more detailed information on the design of the magnets, the paper describes the state of magnet R&D and presents results of short models, among which one reached the record dipole fie ld of 10.5 T, as well as of industry made full scale prototypes which have been successfully tested and measured.