A high performance static magnetic shielded room for detecting biomagnetic nanoparticles
- Resource Type
- Conference
- Authors
- Qingmeng Wang; Tao Song; Ming Wang; Guanghao Zhang
- Source
- 2010 Asia-Pacific International Symposium on Electromagnetic Compatibility Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on. :377-380 Apr, 2010
- Subject
- Fields, Waves and Electromagnetics
Magnetic shielding
Biomagnetics
Nanoparticles
SQUIDs
Superconducting magnets
Magnetization
Magnetic devices
Temperature
Superconducting device noise
Superconducting devices
- Language
- ISSN
- 2162-7673
A three-layer magnetic shielded room (MSR) has been built to house biomagnetic nanoparticles detecting system based on a low temperature Superconducting Quantum Interference Device (SQUID). The MSR with an open type door was designed to match the noise levels of SQUID coupled with one-order gradiometers while minimizing the overall facility cost. The room measures 2 × 2 × 2 m 3 internally and consists of three-layer silicon-steel plate shell instead of the permalloy. The static shielding factor in the room is 25000 at which point the eminent magnetization is 2 nT. This valve matches the measurement of isothermal remanent magnetizations (IRM). We conclude that using cheap materials of silicon-steel plate with relative low permeability can also produce a high performance MSR.