The Muon g-2 Experiment Overview and Status as of June 2016

TL;DR

The Muon g-2 experiment at Fermilab aims to measure the muon's anomalous magnetic moment with unprecedented precision and extend the search for its electric dipole moment, improving upon previous measurements and exploring new physics.

Contribution

This paper provides an overview and status update of the Fermilab Muon g-2 experiment as of June 2016, including recent technical progress and experimental setup details.

Findings

Achieved improved magnetic field uniformity in the storage ring.

Enhanced alignment of electrostatic quadrupole plates and trolley rails.

Progress in data collection and analysis methods for muon decay measurements.

Abstract

The Muon g-2 Experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the electric dipole moment (EDM) of the muon by approximately two orders of magnitude, with a sensitivity down to $10^{-21}$ e.cm. Both of these measurements are made by combining a precise measurement of the 1.45T storage ring magnetic field with an analysis of the modulation of the decay rate of higher-energy positrons (from anti-muons), recorded by 24 calorimeters and 3 straw tracking detectors. The recent progress in the alignment of the electrostatic quadrapole plates and the trolley rails inside the vacuum chambers, and in establishing the uniform storage ring magnetic field will be described.