TIPP 2021

May 24 – 28, 2021
America/Vancouver timezone

A High Efficiency Cosmic Ray Veto Detector for the Mu2e Experiment at Fermilab

May 25, 2021, 6:24 AM
18m
Parallel session talk Experiments: Precision techniques at low energy

Edmond Dukes

Description

The Mu2e experiment is designed to search for the charged-lepton-flavor-violating
process, $\mu^-$ to a $e^-$, with unprecedented sensitivity. The single 105-MeV
electron that results from this process can be mimicked by electrons produced by
cosmic-ray muons traversing the detector. An active veto detector surrounding
the apparatus is used to detect incoming cosmic-ray muons. To reduce the backgrounds
to the required level it must have an efficiency of about 99.99\% as well as
excellent hermeticity. The detector consists of four layers of scintillator counters,
each with two embedded wavelength-shifting fibers, whose light is detected by
silicon photomultipliers. The design and expected performance of the cosmic ray
veto detector will be described.

Funding information US Department of Energy Yes, this would have been presented at TIPP2020.