First results of AUP Nb3Sn quadrupole horizontal tests

TL;DR

This paper reports the initial results of horizontal tests on fully assembled Nb3Sn quadrupole magnets, a key step towards upgrading the LHC with higher magnetic fields for increased luminosity.

Contribution

It presents the fabrication process and first test results of Nb3Sn quadrupole magnets for the HL-LHC upgrade, marking a significant milestone in large-scale application of Nb3Sn in accelerators.

Findings

Successful horizontal testing of the first fully assembled Nb3Sn quadrupole cryo-assembly.

Demonstration of magnet performance suitable for LHC upgrade requirements.

Progress in Nb3Sn magnet fabrication for high-luminosity collider upgrade.

Abstract

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