Magnetic design of a low-beta quadrupole magnet for the LMC interaction regions

As part of the collaboration program between CERN and KEK for the LHC, we h ave been developing a high field gradient superconducting insertion quadrup ole magnet with a field gradient of 240 T/m in an aperture of 70 mm. To dat e two model magnets have been built and their quench characteristics and fi eld qualities have been studied. Based on these results, we have performed the final adjustment of the magnet design. In this paper we present the sum mary of the design which will include short sample limits and field quality analysis for both the straight section and the end regions.