A5101676510- Atomic and Subatomic Physics Research
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Magnetic and transport properties of perovskites and related materials
- Advanced MRI Techniques and Applications
- Functional Brain Connectivity Studies
- Ionosphere and magnetosphere dynamics
Magnetically shielded rooms (MSRs) use multiple layers of materials such as MuMetal to screen external magnetic fields that would otherwise interfere with high precision field measurements magnetoencephalography (MEG). Optically pumped magnetometers (OPMs) have enabled the development wearable MEG systems which potential provide a motion tolerant functional brain imaging system spatiotemporal resolution. Despite significant promise, OPMs impose stringent shielding requirements, operating...
Here, a benchtop hybrid magnetic shield containing four mumetal cylinders and nine internal flexible printed circuit boards is designed, constructed, tested, operated. The designed specifically as test-bed for building operating ultra-sensitive quantum magnetometers. geometry spacing of the are optimized to maximize shielding efficiency while maintaining Johnson noise < 15 fT/ √ Hz. Experimental measurements at shield's center show passive (1.0 ± 0.1)×10 <sup...
The accurate control of magnetic fields is a cornerstone multiple emerging quantum technologies. These technologies often require passive high permeability shielding and internal active field-generating coils to create their own bespoke field landscape. However, generated by are distorted shielding, preventing the efficient generation desired environment. Here, we design cylindrical four-layer shield with an interior hybrid active-passive coil system that explicitly optimised include...