We report on the design, construction, and performance of a compact magnetic shield that facilitates a controlled, low-noise environment for experiments with ultracold atomic gases. The shield was designed to passively attenuate external slowly varying magnetic fields while allowing for ample optical access. The geometry, number of layers, and choice of materials were optimized using extensive finite-element numerical simulations. The measured performance of the shield is in good agreement with the simulations. From measurements of the spin coherence of an ultracold atomic ensemble, we demonstrate a residual field noise of 2.6 μG and a suppression of external dc magnetic fields by more than five orders of magnitude.

Design and characterization of a compact magnetic shield for ultracold atomic gas experiments / Farolfi, A.; Trypogeorgos, D.; Colzi, G.; Fava, E.; Lamporesi, G.; Ferrari, G.. - In: REVIEW OF SCIENTIFIC INSTRUMENTS. - ISSN 0034-6748. - 90:11(2019), p. 115114. [10.1063/1.5119915]

Design and characterization of a compact magnetic shield for ultracold atomic gas experiments

Farolfi A.;Trypogeorgos D.;Colzi G.;Lamporesi G.;Ferrari G.
2019-01-01

Abstract

We report on the design, construction, and performance of a compact magnetic shield that facilitates a controlled, low-noise environment for experiments with ultracold atomic gases. The shield was designed to passively attenuate external slowly varying magnetic fields while allowing for ample optical access. The geometry, number of layers, and choice of materials were optimized using extensive finite-element numerical simulations. The measured performance of the shield is in good agreement with the simulations. From measurements of the spin coherence of an ultracold atomic ensemble, we demonstrate a residual field noise of 2.6 μG and a suppression of external dc magnetic fields by more than five orders of magnitude.
2019
11
Farolfi, A.; Trypogeorgos, D.; Colzi, G.; Fava, E.; Lamporesi, G.; Ferrari, G.
Design and characterization of a compact magnetic shield for ultracold atomic gas experiments / Farolfi, A.; Trypogeorgos, D.; Colzi, G.; Fava, E.; Lamporesi, G.; Ferrari, G.. - In: REVIEW OF SCIENTIFIC INSTRUMENTS. - ISSN 0034-6748. - 90:11(2019), p. 115114. [10.1063/1.5119915]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/257208
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