The Muon g-2 Experiment at Fermilab

The E989 collaboration has recently published the most precise measurement of the muon anomalous magnetic moment a(mu) with an uncertainty of 0. 46 ppm. The new experimental world average of a(mu) deviates by 4.2 standard deviations from the Standard Model prediction provided by the Muon g-2 Theory Initiative. To extract the value of a(mu) a frequency comparison experiment is performed with spin-polarized muons confined in a superbly controlled electric and magnetic field environment. A measurement of the difference between the Larmor and the cyclotron frequency, the so-called anomalous spin precession frequency, is combined with a high-precision measurement of the magnetic field environment which is performed using nuclear magnetic resonance techniques. I discussed the most recent result of the Fermilab Muon g-2 experiment's first physics data run performed in 2018. I reported on the experimental improvements implemented for the subsequent science runs that will allow the collaboration to achieve the ultimate goal of 0. 14 ppm uncertainty on a(mu).