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Polarimetry for measuring the vacuum magnetic birefringence with quasi-static fields: a systematics study for the VMB@CERN experiment

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Version 2 2023-06-08, 12:48
Version 1 2023-01-12, 14:10
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posted on 2023-06-08, 12:48 authored by G. Zavattini, F. Della Valle, A. M Soflau, L. Formaggio, G. Crapulli, G. Messineo, E. Mariotti, S. Kunc, A. Ejlli, G. Ruoso, C. Marinelli, M. Andreotti
We present an experimental systematics study of the polarimetric method for measuring the vacuum magnetic birefringence based on a pair of rotating half-wave plates. The presence of a systematic effect at the same frequency as the sought for magneto-optical effect inhibits the use of strictly constant magnetic fields. We characterise this systematic, discuss its origin and propose a viable workaround.

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