Speaker
Mr
Marco Peruzzi
Description
High-Luminosity running at the LHC, which is planned for 2022 and beyond, will
imply an order of magnitude increase in radiation levels and particle
fluences with respect to the present LHC running conditions. The performance evolution of
the CMS electromagnetic calorimeter (ECAL), comprising 75,848 scintillating
lead tungstate crystals, indicates that an upgrade of its endcaps will be needed
for HL-LHC running, to ensure an adequate performance. Results from LHC
collision periods, beam tests and laboratory measurements of proton-irradiated
crystals are combined to predict the performance of the current detector at the
HL-LHC. In addition, an overview is given of various R&D studies towards a
replacement of the ECAL endcaps for the HL-LHC running period.
