Mu2e Experiment

Muon-to-Electron Conversion Experiment at Fermilab

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Production Solenoid (PS)

8 kW, 8 GeV protons → pions → muons
4.6T peak field

Transport Solenoid (TS)

S-shaped, selects μ⁻ to stopping target
2.5T → 2.0T gradient

Detector Solenoid (DS)

Tracker + calorimeter + CRV
2.0T → 1.0T graded field

Stopping Target

17 Al foils, μ⁻ capture → e⁻ conversion

Straw Tube Tracker

Resolution: 180 keV
18 stations, ~3.2m long

Calorimeter

CsI crystals, 2 annular disks

Cosmic Ray Veto (CRV)

4 layers scintillator
Efficiency: > 99.99%

8 GeV Proton Beam

Total POT (design): 3.6 × 10²⁰

Muon Rate

3 × 10¹⁰ μ/sec at stopping target