Development of twin aperture dipole magnets for the Large Hadron Collider

A twin aperture dipole magnet has been developed with a feature of symmetric, separate coil/collar design in a R&D cooperation between CERN and KEK towards the LHC (Large Hadron Collider) project. The magnet reached 8.1 T at 4.2 K and 9.6 T at 1.8 K in the training test. Development of the magnet and test results are discussed. Design study of a new 56 mm /spl phi/ twin aperture dipole is also discussed.<
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