Test Results at 1.9K for MQXC, a Nb-Ti magnet or the LHC luminosity upgrade

by Glyn Kirby (CERN)

Tuesday 20 Nov 2012, 14:00 → 15:00 Europe/Zurich

CERN

The MQXC 2m long models are a set of large aperture superconducting quadrupole magnets using LHC dipole cables in the framework of the LHC luminosity upgrade. MQXC is the plan B in case that the Nb3Sn does not meet the accelerator requirements. Indeed, this magnet features novel technologies that could be adopted by other magnets of the LHC luminosity upgrade, as the separation dipole or the large aperture two in one quadrupole Q4. This talk will cover most of the novel features envisaged to improve the magnet performance to meet the upgrade requirements, as (I) the enhanced insulation and (II) coil and structural components permeable to He. We will present the set of 1.9 K test results for the first magnet, covering quench training, field quality, quench protection, and heat extraction measurements.