A scalable high-performance magnetic shield for Very Long Baseline Atom Interferometry

E. Wodey; D. Tell; E. M. Rasel; D. Schlippert; R. Baur; U. Kissling; B. Kölliker; M. Lorenz; M. Marrer; U. Schläpfer; M. Widmer; C. Ufrecht; S. Stuiber; P. Fierlinger

doi:10.1063/1.5141340

arXiv · 1911.12320

A scalable high-performance magnetic shield for Very Long Baseline Atom Interferometry

E. Wodey·D. Tell·E. M. Rasel·D. Schlippert·R. Baur·U. Kissling·B. Kölliker·M. Lorenz·M. Marrer·U. Schläpfer·M. Widmer·C. Ufrecht·S. Stuiber·P. Fierlinger

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Abstract

We report on the design, construction, and characterization of a 10 m-long high-performance magnetic shield for Very Long Baseline Atom Interferometry (VLBAI). We achieve residual fields below 4 nT and longitudinal inhomogeneities below 2.5 nT/m over 8 m along the longitudinal direction. Our modular design can be extended to longer baselines without compromising the shielding performance. Such a setup constrains biases associated with magnetic field gradients to the sub-pm/$\textrm{s}^2$ level in atomic matterwave accelerometry with rubidium atoms and paves the way towards tests of the universality of free fall with atomic test masses beyond the $10^{-13}$ level.

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E. Wodey, D. Tell, E. M. Rasel, D. Schlippert, R. Baur, U. Kissling, B. Kölliker, M. Lorenz, M. Marrer, U. Schläpfer, M. Widmer, C. Ufrecht, S. Stuiber, P. Fierlinger. 2019-11-27. A scalable high-performance magnetic shield for Very Long Baseline Atom Interferometry. https://doi.org/10.1063/1.5141340

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