Thorben Quast, 15.12.20

Di. 15.12.2020 16.30 (Zoom)

Thorben Quast (CERN)

CMS HGCAL Overview



The CMS collaboration is preparing to build replacement endcap
calorimeters for the HL-LHC era. The new calorimeter endcap will be a
highly-granular sampling calorimeter (HGCAL) featuring unprecedented
transverse and longitudinal readout segmentation for both its
electromagnetic and hadronic compartments. The granularity together with
a foreseen timing precision on the order of a few tens of picoseconds
will allow for measuring the fine structure of showers, will enhance
pileup rejection and particle identification, whilst still achieving
good energy resolution. The regions exposed to higher-radiation levels
will use silicon as active detector material. The lower-radiation
environment will be instrumented with scintillator tiles with on-tile
SiPM readout. In addition to the hardware aspects, the reconstruction of
signals, both online for triggering and offline, represents a
challenging task - one where modern machine learning approaches are well
In this talk, the reasoning and ideas behind the HGCAL, the
proof-of-concept of its design in test beam experiments, and the
challenges ahead will be presented.

Host: Martin Erdmann