A Tabletop Apparatus to Measure the Magnetic Moment of the Muon
Ely, David Richard
An apparatus was constructed to measure the magnetic moment of cosmic ray muons using their precession in a uniform magnetic field. A 102.0 x 20.6 x 5.4 cm plastic scintillator was sandwiched between two 102.0 x 20.6 x 1.6 cm scintillators inside a uniform, 42 G magnetic field, which was produced by a large solenoid. A small veto scintillator eliminated events occurring in the non-uniform region of the field at the ends of the solenoid. A logic circuit identified muons stopping in the center scintillator and the subsequent decay of these muons. The time difference between the muon stopping and its decay was recorded for about 67,000 events, allowing the decay constant and the magnetic moment to be determined.
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