Fabrication and Test of a 1 M Long Single-aperture 11 T Nb$_{3}$Sn Dipole for LHC Upgrades

FNAL and CERN are carrying out a joint R&D program with the goal of building a 5.5-m long twin-aperture Nb$_{3}$Sn dipole prototype suitable for installation in the LHC. An important part of the program is the development and test of a series of short single-aperture demonstration dipoles with a nominal field of 11 T at the LHC nominal current of 11.85 kA and 20% margin. This paper describes design features and test results of a 1 m long single-aperture Nb$_{3}$Sn demonstrator dipole.