Magnetic Linear Birefringence Measurements Using Pulsed Fields
Paul Berceau (LNCMI), Mathilde Fouch\'e (LNCMI), Remy Battesti, (LNCMI), Carlo Rizzo (LNCMI)
TL;DR
This paper details the development of an experimental setup to measure vacuum magnetic birefringence using pulsed magnetic fields, including calibration, error analysis, and future improvement plans.
Contribution
It introduces a refined experimental method for measuring vacuum magnetic birefringence with pulsed fields and provides calibration and error analysis.
Findings
Calibration with nitrogen gas achieved
Vacuum upper limit of Dn < 5.0x10^(-20) T^-2
Discussion of necessary improvements for future measurements
Abstract
In this paper we present the realization of further steps towards the measurement of the magnetic birefringence of the vacuum using pulsed fields. After describing our experiment, we report the calibration of our apparatus using nitrogen gas and we discuss the precision of our measurement giving a detailed error budget. Our best present vacuum upper limit is Dn < 5.0x10^(-20) T^-2 per 4 ms acquisition time. We finally discuss the improvements necessary to reach our final goal.
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