PPPS-2013: Magnetic field probe calibration at relevant field magnitude and frequency

摘要

Calibration factors of two differential configuration magnetic field probes are presented as functions of frequency and field magnitude. Calibration values are determined experimentally using a 7.74 cm radius Helmholtz coil in three separate configurations. A broadband frequency sweep is performed with a network analyzer for frequency domain measurements while a function generator provides time domain measurements. These methods produce calibration factors over a large frequency range (100 kHz–1 MHz) with field magnitudes less than one Gauss. Large field magnitudes are achieved with a pulsed-power setup using multiple capacitor banks charged from 13–25 kV producing magnetic fields of at least 0.1 kG up to 3.8 kG. Tests are conducted at five frequencies in the range of interest. The calibration factors are calculated and presented as a function of field magnitude and frequency.