Magnetic Field Mapper

Abstract

The scientific program at the Integrable Optics Test Accelerator (IOTA) ring depends on a wide variety of specialized magnets, and validation of their field quality is important for ensuring proper performance. A number of these magnetic elements have both high field quality and a small physical aperture, and adequate field-mapping solutions have not been readily available in house or with external vendors. To solve this problem, a new magnetic-field mapping device needs to be developed. This new system features a high-precision tesla-meter, with a low-profile three-axis Hall probe, and stepper motors to allow for high-speed, accurate positioning of the probe. This new Magnetic Field Mapper (MFM), shown in Figure 1, will be capable of quickly mapping a wide variety of magnets to high precision, thus eliminating the need to send magnets off-site for expensive and time-consuming mapping.