The Tale of Two Rooms: Comparison of QuSpin Zero-Field OPMs’ Operation in Two Magnetically Shielded Environments
This article addresses several critical aspects of using optically pumped magnetometers (OPMs), focusing on both metrological issues and the enhancement of signal quality. We present a quantitative methodology for OPM measurements standardization and quality evaluation, which is crucial in biomedical applications like magnetoencephalography (MEG). Additionally, we introduce a novel, cost-effective portable active magnetic shielding system—digital adaptive suppression system (DASS)—that represents a significant advancement over traditional analog active shielding. Through comprehensive experimental research, we evaluate first- and third-generation commercial OPMs from QuSpin Inc. in two distinct magnetic environments. Our results demonstrate that the DASS ensures optimal and reliable OPM performance, even in noisy urban settings, surpassing the effectiveness of conventional analog shielding. These findings highlight the need for advanced magnetic shielding solutions to enhance the accuracy and reproducibility of OPM measurements.
Authors
- Darisy G. Zhao (ORCID: https://orcid.org/0000-0003-0211-7336)
- Maxim V. Fedorov (ORCID: https://orcid.org/0000-0003-3901-3565)
- Oleg Shevtsov
- Alexei Ossadtchi (ORCID: https://orcid.org/0000-0001-8827-9429)
- Nikolay Koshev (ORCID: https://orcid.org/0000-0001-7241-3304)
- Anna Butorina (ORCID: https://orcid.org/0009-0007-9711-3720)
- Ignat A. Dubynin (ORCID: https://orcid.org/0000-0002-2461-3229)
- Nikita Fedosov (ORCID: https://orcid.org/0000-0002-2456-9651)
- Ekaterina Skidchenko (ORCID: https://orcid.org/0000-0003-0945-2436)
- Daria Medvedeva (ORCID: https://orcid.org/0009-0009-5819-5107)
Institutions
- National Research University Higher School of Economics (RU)
- Skolkovo Institute of Science and Technology (RU)
- Kurchatov Institute (RU)
- Institute for Information Transmission Problems (RU)
- Moscow State University of Psychology & Education (RU)
- Thermo Fisher Scientific (Norway) (NO)
Publication Details
- Journal
- IEEE Transactions on Instrumentation and Measurement
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1109/tim.2025.3554317
- Citations
- 2
- Primary Topic
- Particle accelerators and beam dynamics
- Type
- article
- Field-Weighted Citation Impact
- 9.99
Funders
- Russian Science Foundation
- National Research University Higher School of Economics