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A large-scale magnetic shield with 10⁶ damping at mHz frequencies

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arxiv 1501.07861 v4 pith:K3CB5NGB submitted 2015-01-30 physics.ins-det

A large-scale magnetic shield with 10⁶ damping at mHz frequencies

classification physics.ins-det
keywords dampingphysicsregimeshieldaccelerator-basedbeyonddesigndifficult
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a magnetically shielded environment with a damping factor larger than one million at the mHz frequency regime and an extremely low field and gradient over an extended volume. This extraordinary shielding performance represents an improvement of the state of the art in damping the difficult regime of very low-frequency distortions by more than an order of magnitude. This technology enables a new generation of high precision measurements in fundamental physics and metrology, including searches for new physics far beyond the reach of accelerator-based experiments. We discuss the technical realization of the shield with its improvements in design.

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