Abstract
Muon beams of low emittance provide the basis for the intense, well-characterised neutrino beams of a neutrino factory and for multi-TeV lepton-antilepton collisions at a muon collider. The international Muon Ionization Cooling Experiment (MICE) has demonstrated the principle of ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam at such facilities. This paper documents the performance of the detectors used in MICE to measure the muon-beam parameters, and the physical properties of the liquid hydrogen energy absorber during running.
Highlights
The PID performance of the detectors is summarised in table 4 and table
of the particles that made up the beam
measure the transverse position at which the particle crossed each of the detectors
Summary
Three scintillator hodoscopes were used: to measure the time of flight (TOF) of the particles that made up the beam; to measure the transverse position at which the particle crossed each of the detectors; and to provide the trigger for the experiment. The reference time had an offset dependent on the crossing position, an effect referred to as the readout-trigger signal delay. Further delay was introduced by the signal-transit time of each PMT and of the cable that led the signal to the readout electronics These signal-transit times were unique for each individual readout channel and were determined by dedicated measurements. Two slab signals were taken to have been produced by the passage of a particle if their slab-crossing times were within a 4 ns window These two matched slabs were used to define a pixel of area given by the width of the slabs. The width of the electron peak is approximately 0.10 ns, consistent with the spread calculated from a naive quadrature addition of the timing resolution of the individual TOF stations
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