Timing Detectors with SiPM read-out for the MUSE Experiment at PSI

Abstract

The Muon Scattering Experiment at the Paul Scherrer Institut uses a mixed beam of electrons, muons, and pions, necessitating precise timing to identify the beam particles and reactions they cause. We describe the design and performance of three timing detectors using plastic scintillator read out with silicon photomultipliers that have been built for the experiment. The Beam Hodoscope, upstream of the scattering target, counts the beam flux and precisely times beam particles both to identify species and provide a starting time for time-of-flight measurements. The Beam Monitor, downstream of the scattering target, counts the unscattered beam flux, helps identify background in scattering events, and precisely times beam particles for time-of-flight measurements. The Beam Focus Monitor, mounted on the target ladder under the liquid hydrogen target inside the target vacuum chamber, is used in dedicated runs to sample the beam spot at three points near the target center, where the beam should be focused.

arXiv commentFixed typos, added references, and rephrased some sections to be clearer. Changed numbering of tables and figures in Appendix

References in corpus (7)

• High-precision determination of the electric and magnetic form factors of the proton
• Muonic hydrogen and the proton radius puzzle
• High Precision Measurement of the Proton Elastic Form Factor Ratio ${\mu }_p{G}_E/G_M$ at low $Q^2$
• Silicon Photomultipliers in Particle and Nuclear Physics
• The OLYMPUS Experiment
• A Liquid Hydrogen Target for the MUSE Experiment at PSI
• Time resolution below 100 ps for the SciTil detector of PANDA employing SiPM

Cited by in corpus (6)

• Ultrafast hybrid nanocomposite scintillators: a review
• Characterization of Muon and Electron Beams in the Paul Scherrer Institute PiM1 Channel for the MUSE Experiment
• Time resolution of BC422 plastic scintillator read out by a SiPM
• Instrumental uncertainties in radiative corrections for the MUSE experiment
• The MUSE Target Chamber Post Veto
• The MUSE Beamline Calorimeter