Study of the timing performance of the SKIROC2-CMS for the CMS HGCAL

Abstract

The High Luminosity phase of the LHC (starting operation in 2025) will provide unprecedented instantaneous and integrated luminosity, with 25 ns bunch crossing intervals and up to 140 pileup events. In this context, the High Granularity Calorimeter will provide electromagnetic and hadronic energy measurement in the forward direction of the upgraded CMS. The test beam campaign of the first HGCal modules, started in Summer 2016 at CERN with 8 fully equipped layers of the EE section, will continue in Summer 2017 aiming at the test of a full prototype including the electronic and the hadronic parts. The assessment of the calorimeter performance on a beam test bench is a fundamental phase for the development of a new detector, allowing to test the mechanical structure and electronic chain, characterize the modules performance and measure the shower developments for electrons and hadrons. The aim of the work was to determine the timing performance and the timing characteristics of the single module tested in May 2016 at CERN