Version 1
: Received: 7 October 2024 / Approved: 8 October 2024 / Online: 8 October 2024 (10:30:08 CEST)
How to cite:
Koss, P. A.; Voigt, J.; Rasser, R.; Schnabel, A. Fast Degaussing Procedure for a Magnetically Shielded Room. Preprints2024, 2024100533. https://doi.org/10.20944/preprints202410.0533.v1
Koss, P. A.; Voigt, J.; Rasser, R.; Schnabel, A. Fast Degaussing Procedure for a Magnetically Shielded Room. Preprints 2024, 2024100533. https://doi.org/10.20944/preprints202410.0533.v1
Koss, P. A.; Voigt, J.; Rasser, R.; Schnabel, A. Fast Degaussing Procedure for a Magnetically Shielded Room. Preprints2024, 2024100533. https://doi.org/10.20944/preprints202410.0533.v1
APA Style
Koss, P. A., Voigt, J., Rasser, R., & Schnabel, A. (2024). Fast Degaussing Procedure for a Magnetically Shielded Room. Preprints. https://doi.org/10.20944/preprints202410.0533.v1
Chicago/Turabian Style
Koss, P. A., Ronja Rasser and Allard Schnabel. 2024 "Fast Degaussing Procedure for a Magnetically Shielded Room" Preprints. https://doi.org/10.20944/preprints202410.0533.v1
Abstract
A demagnetization study was conducted on a magnetically shielded room (MSR) at Fraunhofer IPM, designed for applications such as magnetoencephalography (MEG) and materials testing. With a composite of two layers of mu-metal and an intermediate aluminum layer, the MSR must provide a residual field under 5 nT for the successful operation of optically pumped magnetometers (OPM). The degaussing process, employing six individual coils, reached the necessary residual magnetic field within the central 1 m3 volume in under four minutes. Due to the low frequency shielding factor of 100, the obtained average residual field is shown to be limited by environmental residual field changes after degaussing and not by the degaussing procedure.
Keywords
degaussing; residual magnetic field; magnetic shielding; OPM; MEG
Subject
Physical Sciences, Applied Physics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
