ATLAS Upgrade Oxford 2018-2024

Lead Research Organisation: University of Oxford
Department Name: Oxford Physics


The objective of this project is to construct elements of the ATLAS Phase-II Upgrade for operation at the High-Luminosity Large Hadron Collider (HL-LHC). The increased luminosity delivered, around a factor of 10 more than the will be delivered by 2023, by the HL-LHC to ATLAS will significantly enhance the physics programme. The Large dataset collected will allow ATLAS to make precision studies of the Higgs sector, the Standard Model of particle physics, and to extend the mass scales accessible to searches for signatures of new physics well into the TeV region. This will allow ATLAS to address many of the fundamental questions in particle physics:

Is the Higgs mechanism for generating fermion and weak gauge boson masses linked, as is implied by the Standard Model?

Does the Higgs mechanism limit the cross-section of vector boson scattering in the Standard Model at high energies, or is there new physics involved in electroweak symmetry breaking?

Why is the Higgs boson much lighter than the Planck Mass (the hierarchy problem)?

Is there a weakly interacting particle with mass of the order of the electroweak scale that could explain dark matter?

Is supersymmetry (SUSY), a symmetry between bosons and fermions, realised in nature?

Planned Impact

The LHC story and the discovery of the Higgs boson has captured the public's imagination. This has already raised the awareness of science and contributed to the increasing number of students studying Physics. ATLAS-UK is at the forefront of the outreach activities to publicise and explain the physics of the LHC and the impact that it has, through engaging with schools and the general public in the UK and by supporting school visits to CERN.

The training of students and young researchers in particle physics provides a workforce that is skilled in a range of disciplines critical to the UK economy: software, engineering (including electronics, mechanical and software), project management, and data analysis. They also learn important transferable skills: working in a large complex organization both as a member of a team and independently, and living and working in an international environment.

ATLAS-UK is seeking to promote UK industry wherever this is appropriate with the aim that companies become in a position to provide elements for the upgrade. In addition to knowledge exchange between ATLAS-UK and the companies in the development of components, it also provides these companies with an international showcase.


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