The MUSE Beamline Calorimeter
Abstract
The MUon Scattering Experiment (MUSE) was motivated by the proton radius puzzle arising from the discrepancy between muonic hydrogen spectroscopy and electron-proton measurements. The MUSE physics goals also include testing lepton universality, precisely measuring two-photon exchange contribution, and testing radiative corrections. MUSE addresses these physics goals through simultaneous measurement of high precision cross sections for electron-proton and muon-proton scattering using a mixed-species beam. The experiment will run at both positive and negative beam polarities. Measuring precise cross sections requires understanding both the incident beam energy and the radiative corrections. For this purpose, a lead-glass calorimeter was installed at the end of the beam line in the MUSE detector system. In this article we discuss the detector specifications, calibration and performance. We demonstrate that the detector performance is well reproduced by simulation, and meets experimental requirements.
Cite
@article{arxiv.2408.13380,
title = {The MUSE Beamline Calorimeter},
author = {W. Lin and T. Rostomyan and R. Gilman and S. Strauch and C. Meier and C. Nestler and M. Ali and H. Atac and J. C. Bernauer and W. J. Briscoe and A. Christopher Ndukwe and E. W. Cline and K. Deiters and S. Dogra and E. J. Downie and Z. Duan and I. P. Fernando and A. Flannery and D. Ghosal and A. Golossanov and J. Guo and N. S. Ifat and Y. Ilieva and M. Kohl and I. Lavrukhin and L. Li and W. Lorenzon and P. Mohanmurthy and S. J. Nazeer and M. Nicol and T. Patel and A. Prosnyakov and R. D. Ransome and R. Ratvasky and H. Reid and P. E. Reimer and R. Richards and G. Ron and O. M. Ruimi and K. Salamone and N. Sparveris and N. Wuerfel and D. A. Yaari},
journal= {arXiv preprint arXiv:2408.13380},
year = {2025}
}