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Title: Construction and commissioning of straw tracking detectors for the E989 muon g-2 experiment at Fermilab
Author: Albahri, Talal Ali Mohamed Ali
ISNI:       0000 0004 8506 2680
Awarding Body: University of Liverpool
Current Institution: University of Liverpool
Date of Award: 2019
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The E989 muon g-2 experiment at Fermilab seeks to measure the anomalous magnetic moment moment of the muon, aμ, to the precision of 140 ppb. The most precise measurement of aμ to date was obtained by the E821 muon g-2 experiment at BNL at the beginning of this century, which reported a greater than 3s discrepancy between the experimental measurement and the theoretical prediction of the Standard Model, hinting at the possible existence of new physics. In an effort to investigate this discrepancy, E989 aims to repeat the aμ measurement with a 21-fold increase in statistics and a four-fold reduction in systematic uncertainties. If the experimental goals are fulfilled and the central measurement remains the same, then the discrepancy will be confirmed at greater than 5s level and will provide strong evidence for the existence of new physics beyond the Standard Model. E989 uses the same experimental methodology as E821 which relies on injecting an intense μ⁺ beam into a magnetic storage ring and measuring the rate of spin precession experienced by the μ⁺ as they orbit the storage ring. One key improvement to the experimental hardware to reduce the systematic uncertainties is the use of straw tracking detectors which measure the μ⁺ beam profile around the storage ring throughout the experiment. This thesis outlines the motivation for, and experimental principles behind, the E989 muon g - 2 experiment. The main body describes the design, construction and testing of the straw tracking detectors that occurred at the University of Liverpool along with their installation and commissioning at Fermilab. The thesis will also present a blinded analysis of data obtained from the first physics run.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral