Speaker
Description
The Muon g-2 Experiment (E989) at Fermi National Accelerator Lab- oratory (FNAL) has measured the muon anomalous precession frequency (a_μ) in its first physics run in 2018 with a precision of 0.46 parts per million. The anomalous precession frequency was measured using the in- tensity variation of positrons from the decay of polarized positive muons circulating around a storage ring. The magnetic field in the storage ring is actively and passively shimmed to be highly uniform, and it is monitored using nuclear magnetic resonance probes that are calibrated in terms of the equivalent proton spin precession frequency in a spherical water sam- ple. An ensemble of Muon Campus beamline, injection, and storage ring simulation packages were used to develop and test the systematic corrections and errors arising from beam dynamics. In June 2021, the experi- ment completed its fourth physics run. This talk will present an update on the most recent running periods and the plans for the future.
