Discovery Seminar - speaker Ingrid-Maria Gregor – University of Copenhagen

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Discovery Seminar - speaker Ingrid-Maria Gregor

Title: ATLAS getting ready for the HL-LHC

After the successful LHC operation at the center-of-mass energies of 7 and 8
TeV in 2010 - 2012, plans are actively advancing for a series of upgrades of
the accelerator, culminating roughly ten years from now in the high luminosity
LHC (HL-LHC) project, delivering of the order of five times the LHC nominal
instantaneous luminosity along with luminosity leveling. The final goal is to
extend the dataset from about few hundred fb−1 expected for LHC running to 3000
fb−1 by around 2035 for ATLAS and CMS. In parallel the experiments need to be
keep lockstep with the accelerator to accommodate running beyond the nominal
luminosity this decade.

Current planning in ATLAS envisions significant upgrades to the detector during
the consolidation of the LHC to reach full LHC energy and further upgrades. The
challenge of coping with the HL-LHC instantaneous and integrated luminosity,
along with the associated radiation levels, requires further major changes to
the ATLAS detector. The designs are developing rapidly for a new all-silicon
tracker, significant upgrades of the calorimeter and muon systems, as well as
improved triggers and data acquisition. This seminar summarizes various
improvements to the ATLAS detector required to cope with the anticipated
evolution of the LHC luminosity during this decade and the next. The new
tracker for the

HL-LHC, the ITK, will be described in more detail with a detailed overview on
the currently ongoing R&D.