First Results of AUP Nb3Sn Quadrupole Horizontal Tests

The Large Hadron Collider will soon undergo an upgrade to increase itsluminosity by a factor of  10 [1]. A crucial part of this upgrade will bereplacement of the NbTi focusing magnets with Nb3Sn magnets that achieve a  50increase in the field strength. This will be the first ever large-scaleimplementation of Nb3Sn magnets in a particle accelerator. The High-LuminosityLHC Upgrade, HL-LHC is a CERN project with a world-wide collaboration. It isunder construction and utilizes Nb3Sn Magnets (named MQXF) as key ingredientsto increase tenfold the integrated luminosity delivered to the CMS and ATLASexperiments in the next decade. The HL-LHC AUP is the US effort to contribute approximately 50low-beta focusing magnets and crab cavities for the HL-LHC. This paper will present the program to fabricate the Nb3Sn superconductingmagnets. We are reporting the status of the HL-LHC AUP project present theresults from horizontal tests of the first fully assembled cryo-assembly.