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Characterization of muon and electron beams in the Paul Scherrer Institute PiM1 channel for the MUSE experiment

  • E. Cline
  • , W. Lin
  • , P. Roy
  • , P. E. Reimer
  • , K. E. Mesick
  • , A. Akmal
  • , A. Alie
  • , H. Atac
  • , A. Atencio
  • , C. Ayerbe Gayoso
  • , N. Benmouna
  • , F. Benmokhtar
  • , J. C. Bernauer
  • , W. J. Briscoe
  • , J. Campbell
  • , D. Cohen
  • , E. O. Cohen
  • , C. Collicott
  • , K. Deiters
  • , S. Dogra
  • E. Downie, I. P. Fernando, A. Flannery, T. Gautam, D. Ghosal, R. Gilman, A. Golossanov, B. F. Halter, J. Hirschman, Y. Ilieva, M. Kim, M. Kohl, B. Krusche, I. Lavrukhin, L. Li, B. Liang-Gilman, A. Liyanage, W. Lorenzon, P. Mohanmurthy, R. Mokal, P. Moran, S. J. Nazeer, P. Or, T. Patel, E. Piasetzky, T. Rauber, R. S. Raymond, D. Reggiani, H. Reid, G. Ron, E. Rooney, T. Rostomyan, M. Schwarz, A. Sneath, P. G. Solazzo, N. Sparveris, N. Steinberg, S. Strauch, V. Sulkosky, N. Wuerfel
  • Stony Brook University
  • Rutgers - The State University of New Jersey, New Brunswick
  • University of Michigan, Ann Arbor
  • Argonne National Laboratory
  • Montgomery College
  • Temple University
  • College of William and Mary
  • Mississippi State University
  • Duquesne University
  • George Washington University
  • Dalhousie University
  • Saint Mary's University Halifax
  • Tel Aviv University
  • Paul Scherrer Institute
  • Hampton University
  • University of Virginia
  • University of South Carolina
  • University of Basel
  • Massachusetts Institute of Technology
  • The University of Chicago
  • Hebrew University of Jerusalem

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The MUon Scattering Experiment, MUSE, at the Paul Scherrer Institute, Switzerland, investigates the proton charge radius puzzle, lepton universality, and two-photon exchange, via simultaneous measurements of elastic muon-proton and electron-proton scattering. The experiment uses the PiM1 secondary beam channel, which was designed for high precision pion scattering measurements. We review the properties of the beam line established for pions. We discuss the production processes that generate the electron and muon beams, and the simulations of these processes. Simulations of the π/μ/e beams through the channel using TURTLE and G4beamline are compared. The G4beamline simulation is then compared to several experimental measurements of the channel, including the momentum dispersion at the intermediate focal plane and target, the shape of the beam spot at the target, and timing measurements that allow the beam momenta to be determined. We conclude that the PiM1 channel can be used for high precision π, μ, and e scattering.

Original languageEnglish
Article number055201
JournalPhysical Review C
Volume105
Issue number5
DOIs
StatePublished - May 2022

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