Endcap Muon Electronics Upgrade at CERN’s Compact Muon Solenoid Experiment

Abstract

CERNÍs Large Hadron Collider (LHC) is currently the energy frontier of particle physics research. By colliding proton bunches at nearly the speed of light, physicists at CERN probe the fundamental forces that govern the universe as we know it. In 2015, the LHC will undergo a major upgrade, doubling the proton collision energy and halving the time between bunch collisions. In order to accommodate for the increase in particle flux and trigger rate, new electronics were designed and tested. At the Compact Muon Solenoid (CMS) experiment, the cathode strip chamber (CSC) muon detection system comprises one of the main parts of the global data trigger. This trigger helps CMS to distinguish between mundane particle interactions and important, high-transverse-momentum events that could lead to particle discoveries. The CSC electronics upgrade project consists of many complex data acquisition boards. In the second half of 2012, prototype components were integrated on a standalone muon detection chamber at CERN and the performance of the new data acquisition system was investigated using electronic pulses and cosmic ray muons. Testing of new components will continue through 2013.