Effect of Eddy Current in the Laminations on the Magnet Field
نویسنده
چکیده
In this note theory and measurements of the effect of the eddy current in the laminations on the magnet field will be presented. The theory assumes a simple solenoid–type magnet with laminated iron core and ignores the end field effect. The measurements were made on the input voltage and current, and the dipole component of the magnetic field in the middle of the magnet bore. The amplitude and phase relations between these quantities give the field attenuation factor, the phase delay, and the resistance and inductance of the magnet as functions of frequency. Comparisons of the results with the theory will be discussed.
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