ELECTROMAGNETIC FIELD INVESTIGATIONS INSIDE A HOLLOW CYLINDER

The behaviours of the electric and magnetic fields inside a conducting cylinder with a single axial aperture are not as well understood as is commonly believed. The experimental measurements and computer simulations described in this paper comprise a work in progress. The intention of the work is to use the conducting cylinder with a single axial aperture as a standard test object, in order to demonstrate present capabilities in measuring field strengths inside such a test object and to demonstrate the level of agreement attainable with commonly used computer codes. As the following experimental data will show, current free‐field B‐dot sensors cannot be used for measurements inside cavities, as they significantly perturb the fields they are trying to measure. There is indeed a pressing need to develop such nonperturbing sensors for use inside cavities.