Experiences from the Commissioning and First Physics Run of the Fermilab Muon g-2 Experiment

2018/10/08 by Hong, Ran
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det)

paper · doi:10.48550/arxiv.1810.03729

Abstract

The Muon g-2 Experiment (E989) at Fermilab is seeking to measure the anomalous magnetic moment of muon (a_μ) with a precision of 140 parts-per-billion (ppb) and aiming to resolve the discrepancy between the E821 measurement and the Standard Model calculation of a_μ. In E989, the muon beam is stored in a ring magnet. The anomalous spin precession frequency ω_a is measured by counting decay positrons in 24 calorimeters, and the magnetic field is measured by nuclear magnetic resonance (NMR) probes. Improvements in this experiment with respect to its predecessor and the progress achieved in the commissioning run and the first physics run, Run-1, are presented.

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