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HK: Fachverband Physik der Hadronen und Kerne
HK 20: Astroparticle Physics II
HK 20.4: Vortrag
Dienstag, 12. März 2024, 16:45–17:00, HBR 19: C 103
Tracking of the spatial magnetic field distribution and equipment motion effects 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 Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, 55099 Mainz, Germany
The Fermilab Muon g-2 experiment, targets a precision of 140 ppb in measuring the muon’s anomalous magnetic moment. Muons undergo cyclotron motion and spin precession in a ring-shaped quasi-Penning trap within a 1.45 T uniform magnetic field. The measurement determines a ratio of two frequencies: the anomalous spin precession frequency of muons (ωa) and the muon-weighted spin precession frequency of protons (ωp), representing the magnetic field experienced by these muons. Magnetic field measurements are mainly based on nuclear magnetic resonance (NMR) systems.
This presentation will focus on two crucial sub-systems in the magnetic field measurement chain, the trolley probe and fixed probe systems, providing periodic and continuous magnetic field measurements, respectively. We will go through the procedure for synchronizing measurements from these sub-systems in time and discuss the removal of the trolley system’s magnetic signature, due to its motion, in the fixed probes system.
Keywords: Muon g-2; Precision Physics; Muon physics; Magnetic field