The design of magnetic resonance imaging (MRI) gradient coils is a critical element in optimising image quality and system performance. These coils generate spatially varying magnetic fields, which ...

High frequency Helmholtz coils are often used to generate uniform but time varying high frequency magnetic fields for a number of applications such as magnetic field susceptibility, calibration, and ...

Stellarators, twisty machines that house fusion reactions, rely on complex magnetic coils that are challenging to design and build. Now, a physicist has developed a mathematical technique to help ...

One problem with high frequency magnetic design is how to sort out the losses that contribute to a part's efficiency. With the exception of dc resistance, these losses are very difficult to separate ...

Researchers at the National High Magnetic Field Laboratory in Tallahassee, Florida, have pushed a palm-sized superconducting coil to 42 tesla, placing a device small enough to hold in one hand within ...

A cluster of recent papers from fusion researchers describes faster ways to model the powerful magnets that will sit at the ...

Magnetic sensors detect moving ferrous metal. The simplest magnetic sensor consists of a wire coiled around a permanent magnet. A ferrous object approaching the sensor changes magnetic flux through ...

Magnetic Resonance Imaging (MRI) relies on the precise performance of gradient coils to achieve high spatial resolution and rapid imaging sequences. These coils generate spatially varying magnetic ...