4.7 Article

Magnetic noise analysis for small magnetically shielded room in different environmental magnetic fields

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Physics, Applied

Experimental studies on the performance of magnetic shields under different magnetization conditions

Jianzhi Yang et al.

Summary: Magnetic shields are crucial for measuring weak magnetic fields. This study investigates the effects of different degaussing orders, test fields, and environmental fields on the shielding performance of a cubic shielding device. The results show that these conditions significantly influence the residual field and shielding performance of the device.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2023)

Article Automation & Control Systems

Parameter Modeling Analysis of a Cylindrical Ferrite Magnetic Shield to Reduce Magnetic Noise

Danyue Ma et al.

Summary: This article examines the importance of magnetic field shields for electronic equipment, ultrahigh-sensitivity sensors, and electrical instruments. It analyzes the calculation methods of longitudinal and transverse magnetic noise using loss separation. Experimental results confirm the feasibility of the model, and optimized parameters are obtained for reducing magnetic noise by analyzing the effect of structure parameters. The results show that longitudinal magnetic noise decreases with increasing aspect ratio, while transverse magnetic noise remains unchanged when the aspect ratio exceeds 1.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2022)

Article Neurosciences

Using OPM-MEG in contrasting magnetic environments

Ryan M. Hill et al.

Summary: Magnetoencephalography (MEG) has been revolutionized by optically pumped magnetometers (OPMs), offering higher sensitivity, better spatial resolution, and lower cost. This study demonstrates the reliability of OPM-MEG data by conducting a cross-site comparison using near identical commercial systems, showing that appropriate field control allows for the deployment of OPM-MEG systems even in city center hospital locations.

NEUROIMAGE (2022)

Review Neurosciences

Magnetoencephalography with optically pumped magnetometers (OPM-MEG): the next generation of functional neuroimaging

Matthew J. Brookes et al.

Summary: A new generation of MEG technology using optically pumped magnetometers (OPMs) addresses the limitations of current MEG instrumentation, offering improved data quality, adaptability, motion robustness, and a simplified imaging platform. This has far-reaching implications for neuroscience.

TRENDS IN NEUROSCIENCES (2022)

Article Multidisciplinary Sciences

A lightweight magnetically shielded room with active shielding

Niall Holmes et al.

Summary: Magnetically shielded rooms are crucial for maintaining high precision magnetic field measurements, particularly for systems like OPM-MEG. However, current designs optimized for OPM-MEG are expensive and difficult to install, requiring a more lightweight and efficient solution to address these challenges.

SCIENTIFIC REPORTS (2022)

Article Neurosciences

Precision magnetic field modelling and control for wearable magnetoencephalography

Molly Rea et al.

Summary: This study introduces the potential of optically-pumped magnetometers (OPMs) in magnetoencephalography (MEG) experiments and emphasizes the importance of controlling background magnetic fields. The authors propose a magnetic field mapping technique that accurately reconstructs field magnitude and compensates for it through an electromagnetic coil system, significantly reducing low-frequency interference. This technology can improve data quality in experiments, especially those measuring low-frequency oscillations or encouraging head movement.

NEUROIMAGE (2021)

Article Automation & Control Systems

Limits of Low Magnetic Field Environments in Magnetic Shields

Zhiyin Sun et al.

Summary: Advancements in sensitive magnetic sensors have led to a wide range of applications in various fields. This article presents the results of years of work, predicting ultra-low magnetic fields inside passive magnetic shields and confirming this through experiments. Utilizing conventional three-layer chamber structures can greatly improve environmental conditions for magnetic measurements.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2021)

Article Instruments & Instrumentation

Analytic models of magnetically enclosed spherical and solenoidal coils

C-Y Liu et al.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2020)

Article Instruments & Instrumentation

A high-performance compact magnetic shield for optically pumped magnetometer-based magnetoencephalography

Kaiyan He et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2019)

Article Physics, Multidisciplinary

New Limit on the Permanent Electric Dipole Moment of 129Xe Using 3He Comagnetometry and SQUID Detection

N. Sachdeva et al.

PHYSICAL REVIEW LETTERS (2019)

Article Education, Scientific Disciplines

An alternative formulation of the magnetostatic boundary value problem

L. Nasser et al.

AMERICAN JOURNAL OF PHYSICS (2019)

Review Engineering, Electrical & Electronic

SERF Atomic Magnetometer-Recent Advances and Applications: A Review

Jundi Li et al.

IEEE SENSORS JOURNAL (2018)

Review Neurosciences

Magnetoencephalography for brain electrophysiology and imaging

Sylvain Baillet

NATURE NEUROSCIENCE (2017)

Article Engineering, Electrical & Electronic

General Solution of the Hollow Cylinder and Concentric DC Surface Current

Christopher P. Bidinosti et al.

IEEE MAGNETICS LETTERS (2014)

Article Physics, Applied

A low-noise ferrite magnetic shield

T. W. Kornack et al.

APPLIED PHYSICS LETTERS (2007)

Article Engineering, Electrical & Electronic

Measurement and prediction of magnetic losses in Mn-Zn ferrites from DC to the megahertz range

Cinzia Beatrice et al.

IEEE TRANSACTIONS ON MAGNETICS (2006)

Article Engineering, Electrical & Electronic

Incremental permeability of Mu-metal in low fields for the design of multilayer-type magnetically shielded rooms

K Yamazaki et al.

IEEE TRANSACTIONS ON MAGNETICS (2005)

Article Optics

Magnetostatic field noise near metallic surfaces

C Henkel

EUROPEAN PHYSICAL JOURNAL D (2005)