KIP publications

 
year 2017
author(s) P. Lansonneur, P. Bräunig, A. Demetrio , S.R. Müller, P. Nedelec, M.K. Oberthaler
title Probing electric and magnetic fields with a Moiré deflectometer
KIP-Nummer HD-KIP 17-46
KIP-Gruppe(n) F17,F24,S1
document type Paper
Keywords Fieldmeter Lorentz force Moiré effect
source NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A, 862 (2017) 49-53
doi https://doi.org/10.1016/j.nima.2017.04.041
Abstract (en)

A new contact-free approach for measuring simultaneously electric and magnetic field is reported, which considers the use of a low energy ion source, a set of three transmission gratings and a position sensitive detector. Recently tested with antiprotons (Aghion et al., 2014) [1] at the CERN Antiproton Decelerator facility, this paper extends the proof of principle of a moiré deflectometer (Oberthaler et al., 1996) [2] for distinguishing electric from magnetic fields and opens the route to precision measurements when one is not limited by the ion source intensity. The apparatus presented, whose resolution is mainly limited by the shot noise is able to measure fields as low as 9 mVm−1 Hz−1/2 for electric component and 100 μG Hz−1/2 for the magnetic component. Scaled to 100 nm pitch for the gratings, accessible with current state-of-the-art technology [3], the moiré fieldmeter would be able to measure fields as low as 22 μVm−1 Hz−1/2 and 0.2 μG Hz−1/2.

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