Speaker
Description
The CALICE Semi-Digital Hadronic Calorimeter (SDHCAL) prototype, built in 2011, was exposed to beams of hadrons, electrons and muons in short periods in 2012, 2014 and 2015 on different beam lines of the CERN SPS and PS. The prototype with its up to 50 active layers, made of Glass Resistive Plate Chambers (GRPC) and their embedded readout electronics, was run in triggerless and power-pulsing mode. The performance of the SDHCAL during the test beam was found to be very satisfactory with efficiency exceeding 90% for almost all of the active layers. The first results have shown that a linear response (within ± 5%) and a good energy resolution are obtained for a large range of hadronic energies (5-80~GeV) by applying appropriate calibration coefficients on the collected data. Improved reconstruction methods, like charged particles tracking inside hadronic showers, have been used to improve the first results.
