Next Generation Muon g-2 Experiment at FNAL

Understand

The precise measurement of the muon anomalous magnetic moment $a_\mathrm{\mu}$ has stimulated much theoretical and experimental efforts over more than six decades.

• The last experiment at Brookhaven National Laboratory, Upton, NY, USA obtained a value more than three standard deviations larger than predicted by the Standard Model of particle physics, and is one of the strongest hints for physics beyond the Standard Model.
• A new experiment at Fermi National Accelerator Laboratory, Batavia, IL, USA to measure $a_\mathrm{\mu}$ with fourfold increased precision to $140\,\mathrm{ppb}$ is currently in its commissioning phase.
• While the new experiment will reuse the $1.45\,\mathrm{T}$ superconducting muon storage ring which was shipped from Brookhaven National Laboratory, most of the other instrumentation of the experiment will be new.