Speakers
Description
The first phase of the muEDM experiment at Paul Scherrer Institute (PSI), Switzerland, aims to probe the muon electric dipole moment (EDM) using the frozen-spin technique in a compact storage ring, at a sensitivity of 3×10-21 e⋅cm. A fast entrance detector is expected to work in concert with a magnetic pulse generator to kick muons to the desired orbit. At the same time, the entrance detector is expected to veto muons that are beyond the apparatus’ admittance without introducing significant multiple scatterings. We developed a prototype entrance trigger detector consisting of a thin scintillator to detect incoming muons and four wall scintillators as veto detectors. The prototype was tested at 27.5 MeV/c at PiE1 beamline, PSI. A total of 7×105 events were collected, which were readout by SiPMs coupled to the plastic scintillators with two different beam tunes. These events were analyzed to characterize the detector's performance, which was also cross-checked with Monte-Carlo simulations that considered the beam phase space and scintillation processes.
