A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.

Earlier this week, the company successfully tested the Central Solenoid Model Coil (CSMC), a crucial ... that the CSMC could create a magnetic field of 5.7 Tesla, about 100,000 times stronger ...

These papers detail the practical advantages of the planar coil stellarator as well as the methods used to design the planar (i.e. flat) magnetic coils, allowing for a commercial maintenance scheme.

A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.