Speaker
Description
As part of its HL-LHC upgrade program, CMS is developing a High Granularity Calorimeter
(HGCAL) to replace the existing endcap calorimeters. The HGCAL will be realised as a
sampling calorimeter, including an electromagnetic compartment comprising 28 layers of
silicon pad detectors with pad areas of 0.5 - 1.0 cm 2 interspersed with absorbers.
Prototype modules, based on 6-inch hexagonal silicon pad sensors with 128 channels, have
been constructed and include many of the features required for this challenging detector.
In 2016, beam tests of sampling configurations made from these modules have been
conducted both at FNAL and at CERN using the Skiroc2 front-end chip (designed for the
CALICE experiment for ILC).
This year, the setup is extended with CALICE’s AHCAL prototype and it is further tested in
dedicated beam tests at CERN. There, the new Skiroc2-CMS front-end chip is used for the
first time.
We present final results from our studies in 2016, including noise performance, calibration
with MIPs, energy and position resolution as well as precision timing-measurements.
Furthermore, the extended setup in 2017 is discussed and first results from laboratory and
beam tests with electrons and pions are shown.
