The precession frequency measurement in the Muon g-2 experiment at Fermilab

The Muon g−2 (E989) experiment aims to reduce the uncertainty on the muon magnetic anomaly value (a_\mu = \frac{g−2}{2} ) by a factor four (0.14 ppm) compared to the previous experiment at Brookhaven National Laboratory (BNL) in order to clarify the difference (now greater than 3 σ) between the experimental value and the Standard Model (SM) prediction. E989 collected a dataset with the same statistical power of the BNL experiment during the Run 1 data taking (2018). The analysis of data is approaching the final stage and the first result should become available in 2021. In this paper, I will briefly describe the experimental setup and discuss the measure of the muon's spin anomalous precession frequency.