Speaker
Description
The ongoing Muon-proton Scattering Experiment (MUSE) is motivated by the proton radius puzzle, which arose due to recent discrepancies in measurements of the proton radius across various scattering and spectroscopy methods. MUSE aims to extract proton radius measurements from simultaneous electron-proton and muon-proton scattering. A beam of muons, electrons, and pions is fired at a liquid hydrogen target, and several detectors work to identify the number and nature of valid scattering events. These detectors must be calibrated in software so that their readouts are consistently aligned in time. Here, the lead-glass calorimeter at the end of the beamline, which assists in improving and suppressing radiative corrections in the data, is examined. Its time-of-flight calibration parameters and alignment relative to another detector, the beam hodoscope, are updated for MUSE’s 2024 beamtime data and tested for consistency. Additionally, the calorimeter’s energy deposit is analyzed in a few different contexts: first, over different event triggers and beam rates to model the contribution of second beam particles to the energy deposit data; then, over a range of beam momenta for the sake of updating MUSE’s GEANT4 simulation and double-checking detector calibration.
