Lucio Rossi, coordinator of the HL-LHC project until July 2020, tells us about a new community-building intiative of INFN.

Two 90-mm Niobium-titanium (NbTi) double-aperture quadrupole magnets, also called MQYY in the LHC vernacular, have been developed and manufactured by the companies Elytt Energy and SigmaPhi under the QUACO project for the High-Luminosity LHC upgrades.

Uppsala University is upgrading its FREIA Laboratory, initially constructed for the ESS project, to test superconducting magnets and crab cavities for the HL-LHC

35 niobium–tin superconducting coils have been manufactured as part of a fruitful collaboration with the company General Electric. They will be used in the 11 T dipoles for the HL-LHC.

Nb-Ti, MgB2 and ReBCO: a combination of conventional and novel superconductors for the powering of the HL-LHC magnets. Demo 2 and Demo 3 demonstration systems were successfully qualified at CERN in 2020.

CERN developed a digitizer to ensure the high-precision measurement of the current delivered to the superconducting magnets of the HL-LHC.

An overview of the results from a recent study of two different types of Nb3Sn wires by HyperTech Inc. (US) and Bochvar Institute (RU) at the University of Technology and Atominstitut in Vienna.

The schedule for the current long shutdown (LS2) has had to be modified due to the COVID-19 pandemic

At LHC Point 4, a refrigerator that cools helium from room temperature to 4.5 K (-268.65 °C) has undergone major improvements in preparation for the HL-LHC

The cold diodes of the new triplet circuits will be installed in a dedicated cryostat in the LHC tunnel downstream of the triplet magnets and close to the LHC beam pipe.