Speaker
Description
The High-Luminosity LHC (HL-LHC) upgrade aims to increase the colliders integrated luminosity by an order of magnitude through significant modifications to the interaction region layout. One of the key hardware components involved in this upgrade is the MBRD combination-recombination dipole, a double-aperture magnet with magnetic fields aligned in both bores. For this magnet, a magnetic field of 4.5 T in a 105 mm aperture is required, both values increased by 30% compared to the magnets currently installed in the LHC. A completely new design to address challenges such as magnetic cross-talk between the two apertures and the increased Lorentz forces.
The experimental program included the development of a short model (1.5 m in length), which was successfully cold-tested at CERN in 2020, followed by the construction of a full-length prototype, also successfully tested in 2022-2023. The series production plan comprises six magnets, four of which are intended for installation in the tunnel and two reserved as spares. As of now, the series production is halfway complete, with three out of six magnets constructed and one undergoing cold testing at CERN in the spring of 2025. This contribution will provide an overview of the current status of the series production and discuss the results of the cold tests conducted on the first of series magnet so far.
