G.L. Sabbi

TL;DR: The High Luminosity (HiLumi) Large Hadron Collider (LHC) project has, as the main objective, to increase the LHC peak luminosity by a factor five and the integrated luminosity, which will be achieved mainly with a new interaction region layout which will allow a stronger focusing of the colliding beams as discussed by the authors.

TL;DR: In this paper, the authors give a baseline of the interaction region and discuss the main motivations that lead them to choose the technology, the combination of fields/gradients and lengths, the apertures, the quantity of superconductor, and the operational margin.

TL;DR: The LHC Accelerator Research Program (LARP) as discussed by the authors is a collaboration of three US laboratories, BNL, FNAL and LBNL, focusing on the development of high gradient quadrupoles using Nb3Sn superconductor.

TL;DR: In this article, the authors present the HL-LHC low-β quadrupole design, based on the experience gathered by the US LARP program, and describe the support structure components to preload the coils, withstand the electro-magnetic forces, provide alignment and LHe containment, and integrate the cold mass in the LHC IRs.

TL;DR: In this paper, an aluminum shell and bladders are used for pre-stress control of 14 Tesla Nb/sub 3/Sn dipole magnets. Butler et al. used the bladders to monitor the stress of the entire magnet structure, thereby providing a high degree of pre-stress control without the need for high tolerances.