July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Cosmic Ray Backgrounds in the Mu2e Experiment at Fermilab

Jul 31, 2017, 7:03 PM
Reception Area (Fermi National Accelerator Laboratory)

Reception Area

Fermi National Accelerator Laboratory

Poster Computing, Analysis Tools and Data Handling Poster Session and Reception


Dr Ralf Ehrlich (University of Virginia)


The Mu2e experiment will study charged lepton flavor violation by searching for the neutrinoless, coherent conversion of a 𝜇− to an 𝑒−. Such a process will result in an electron of 105 MeV energy. A major background source comes from cosmic-ray muons which can either be misidentified as signal electrons or produce 105 MeV electrons. Such events will occur at a rate of approximately one per day. An active veto detector surrounding the apparatus will be used to detect incoming cosmic-ray muons. Results will be shown from one of the most extensive simulation campaigns ever undertaken in which the cosmic-ray background from several times the entire running period was simulated: over 1012 generated cosmic-ray muons.

Primary author

Dr Ralf Ehrlich (University of Virginia)

Presentation materials