The suppression of magnetic noise in a magnetic shielding unit for atomic sensor applications

Karabinaoğlu M. S., Günay E., ÇAKIR B., Caklı B. M., Sevim M. H.

Sensors and Actuators A: Physical, cilt.393, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 393
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.sna.2025.116833
  • Dergi Adı: Sensors and Actuators A: Physical
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Atomic sensors, Inertial sensors, Magnetic noise suppression, NMRG, OPM
  • Kocaeli Üniversitesi Adresli: Evet

Özet

This article has been prepared for the compensation and optimization of the magnetic noise in a newly designed magnetic shielding unit and a multi-layered flexible circuit, which are critical for quantum sensors such as NMRG (Nuclear Magnetic Resonance Gyroscopes) and OPM (Optically Pumped Magnetometers). For this purpose, design, analytical calculations, simulation, production, heat treatment, degaussing, and field cancellation operations with testing and verification of the magnetic shielding unit have been carried out. The effectiveness of the operations has been demonstrated by magnetic attenuation performance measurements of three axes before and after the heat treatment, degaussing, and field cancellation operations. The results proved that the magnetic shielding capacity of the unit can be increased by 21.9, 170.8, and 1.9 times, thanks to the heat treatment procedure, and 2.5, 175, and 2957.1 times, thanks to degaussing and field cancellation processes, in the X, Y, and Z axes, respectively. It has also been reported theoretically and experimentally that magnetic noise below 135 fT/√Hz and 16 fT/√Hz can be obtained in the range of 10–100 Hz in the transverse and longitudinal axes of this newly developed compact and flexible coil integrated magnetic shielding unit.