Superconducting Solenoid System with Adjustable Shielding Factor for Precision Measurements of the Properties of the Antiproton
Jack A. Devlin, Elise Wursten, James A. Harrington, Takashi Higuchi, Pascal E. Blessing, Matthias J. Borchert, Stefan Erlewein, Jannek J. Hansen, Jonathan Morgner, Matthew A. Bohman, Andreas H. Mooser, Christian Smorra, Markus Wiesinger, Klaus Blaum, Yasuyuki Matsuda, Christian Ospelkaus, Wolfgang Quint, Jochen Walz, Yasunori Yamazaki, Stefan Ulmer
DOI 10.1103/PhysRevApplied.12.044012 · Physical Review Applied
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Abstract
A superconducting self-shielding three-solenoid system with an adjustable shielding factor is developed, implemented, and characterized using a single antiproton in a Penning trap. With the tuned system, we suppress external magnetic field disturbances by up to a factor of 225 ± 15, allowing antiproton-to-proton charge-to-mass ratio comparisons with fourfold reduced frequency fluctuations and antiproton magnetic moment determinations with tenfold reduced uncertainty.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbTi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.5 | Pressure not reported | onset |
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