Test results of a single aperture dipole model magnet for LHC

The 56 mm single aperture superconducting dipole model with a 5-block coil configuration was reassembled and tested to investigate the full support of electro-magnetic forces using a high-manganese steel collar structure with out mechanical contribution from an iron yoke. The reassembled model, which has a gap between the high manganese steel collar and the horizontally spl it iron yoke, reached a central field of 9 tesla (93% of short sample) at t he first quench and attained the short sample limit with a few following qu enches. The test results of the training quenches and the mechanical behavi or after the modification are described.