Design, fabrication and testing of a 56 mm bore twin-aperture 1 m long dipole magnet made with SSC type cable

In the framework of the LHC superconducting dipole magnet model programme, a 56 mm bore, twin-aperture dipole model 1 m long, using existing cables of the standard SSC type, was launched to initiate studies of lower field magnets with smaller strand size cables for a 7 TeV collider. This model was designed, built, assembled and tested at CERN and reached a peak field of 9.7 T at 1.8 K. The paper reviews the main design principles, presents the fabrication and assembly procedures and finally discusses the overall test results.