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SMuK 2023 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 33: Fundamental Symmetries I

HK 33.3: Talk

Wednesday, March 22, 2023, 15:00–15:15, SCH/A252

Tracking of the spatial magnetic field distribution for the Fermilab Muon g−2 experiment — •Mohammad Ubaidullah Hassan Qureshi, René Reimann, and Martin Fertl for the Muon g–2 collaboration — Institute of Physics and Excellence Cluster PRISMA+, Johannes Gutenberg University Mainz, 55099 Mainz, Germany

The Fermilab Muon g−2 experiment E989 aims to measure the anomalous magnetic moment of the muon to a precision of 140 ppb. This experiment consists of muons stored in a ring-shaped quasi-penning trap within a uniform magnetic field of 1.45 T. The measurement is composed of a ratio of two frequencies, the anomalous spin precession frequency of the muons (ωa) and the muon-weighted spin precession frequency of protons (ωp). ωp is fundamentally the measure of the magnetic field experienced by these precessing muons, we measure this magnetic field using nuclear magnetic resonance (NMR) based probe systems. In this talk, I will be reviewing two of the sub-systems of the magnetic field measurement chain, namely, the trolley probe and the fixed probe systems which measure the magnetic field periodically and continuously, respectively. This will be followed by an overview of the procedure for synchronising the measurements of the two sub-systems in time and the independent cross-check performed on the procedure for removing the trolley system’s magnetic signature in the fixed probe system.

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