Magnetic field mapper based on rotating coil

Pasquale Arpaia, Marco Buzio, Olaf Dunkel, Stephan Russenschuck, Ernesto De Matteis

Abstract

A magnetic field mapper based on (i) a rotating coil transducer of 40 × 10 mm² with a total coil surface of 0.1237 m², and (ii) a train-like system for longitudinal motion and positioning inside magnet bore, is proposed. The mapper allows a localised measurement of magnetic fields and the variation of the harmonic multipole content in the magnet ends. After an introduction to the measurement needs and problems, the magnetic measurement system is presented, focusing on the requirements, the architecture and conceptual design, and the prototype for straight magnets. Functional tests of the longitudinal position measurements of the system are reported and results of the experimental characterization are presented in terms of repeatability and resolution.

Keywords

magnetic measurements, field mapping, measurement system, rotating coil

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DOI

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IMEKO TC

TC10 - Measurement for Diagnostics, Optimization and Control

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