High Luminosity Large Hadron Collider UK Phase-II

Lead Research Organisation: Royal Holloway, University of London
Department Name: Physics


The Large Hadron Collider (LHC) was successfully commissioned in 2010 for proton-proton collisions with a 7 TeV centre-of-mass energy and is now delivering 13 TeV centre-of-mass proton collisions. The LHC is pushing the limits of human knowledge, enabling physicists to go beyond the Standard Model - the Higgs discovery was announced in 2012 - and the LHC has the potential to go on and help answer some of the key questions of our age: the existence, or not, of supersymmetry; the nature of dark matter; the existence of extra dimensions and studying the Higgs boson in more detail. To extend its discovery potential and significantly reduce statistical error, the LHC will need a major upgrade in the 2020s to increase its scientific output by at least a factor of five beyond its design value, this is known as High Luminosity LHC (HL-LHC). HL-LHC-UK is a proposal for a five year project known as HL-LHC-UK2, which will continue the success of HL-LHC-UK and LESS1 prototyping phases and from 1st April 2020 will deliver key series production hardware and key beam physics studies to HL-LHC including crab cavity cryomodules, coldboxes for cold powering, and beam diagnostics hardware as well as collimation studies. The project will receive inward investment into the UK via CERN to enable UK industry to deliver key components to the LHC.

The overall HL-LHC-UK2 project aligns closely with UK, European and global strategies for accelerator and particle physics, where the complete exploitation of the machine is central and of highest priority. The 2017 UK accelerator strategy review states "Recommendation 9 - Maximise the scientific and industrial return on the significant, long- term UK investment in CERN by exploiting synergies across thematic areas, and industry involvement." and states "Due to commence operations in 2025, the Large Hadron Collider (LHC) high luminosity project (HL-LHC) is a high priority for both UK and CERN. Current UK contributions to the upgrade research and development include advanced collimators, crab cavities, beam instrumentation and cold-powering systems. Involvement in this project enables the UK to make high profile and important contributions to the LHC machine upgrade". The STFC 2016-2020 delivery plan states "Supporting UK leadership in the technical upgrades at CERN" is a top priority, and also "Developing opportunities to engage industry and other partners earlier in the development of technology solutions".

The work will fund a significant number of STFC staff at the Daresbury Laboratory as well as several academics, PDRAs and PhD Students in 8 individual Universities across the two Accelerator Institutes.

Planned Impact

Please see lead proposal.


10 25 50