Muon g-2 and The Big Move
- Brendan Casey, Fermilab
Thursday, November 14, 4:10 PM - Physics and Astronomy Colloquium
Biomedical & Physical Sciences Bldg., Rm. 1415
An international collaboration of 140 scientists is constructing an experiment to perform the most precise measurement of the anomalous magnetic moment of the muon. The muon 'g' factor is predicted to be exactly 2 by relativistic quantum mechanics. Deviations from 2 are caused by quantum fluctuations of virtual particles in the vacuum. Quantum Field Theory predicts these deviations from 2 well below the part per million level motivating our experimental goal of 0.1 parts per million precision. The cornerstone of the experiment is a 50 foot superconducting electromagnet used to store the muons that was constructed for the last Muon g-2 experiment at Brookhaven National Lab in the 90's. The ring is a marvel of engineering and it was decided to move the entire ring intact from Brookhaven to Fermilab rather than try to reproduce the masterpiece. In this talk, I will motivate the measurement, describe the experimental techniques, present the status of the new experiment, and show highlights from The Big Move that occurred last July.