Feasibility Study of a Multipole Electromagnet Using a Parallel Iron-Core Structure

This paper presents a design concept of a multipole electromagnet using a parallel iron-core structure. An electromagnet can be used in many types of magnetic study area, such as work on magnetic susceptibility, the Hall effect research, the magneto-optical effect, and in hysteresis measurements. In electromagnets, generally, only a single probe can be used at a time due to the single pole structure, and it is challenging to measure many samples simultaneously. In this paper, a multipole electromagnet is proposed. It has a parallel iron-core structure and a high-temperature superconducting coil, unlike the conventional electromagnet system. The electromagnet with such a structure enables multiple probes to be used simultaneously. To verify the feasibility of the structure, a small-scale multipole electromagnet was designed using commercialized finite element method software. Based on the design results, a parallel iron-core and coil assembly was fabricated and the performance of the magnet was evaluated.