NON-PERTURBING SENSOR FOR MEASUREMENT OF DC FIELDS IN THE PRESENCE OF SPACE CHARGE
Franjo Cecelja
Abstract:
The paper presents theoretical analysis and experimental verification of an electro-optic sensor for measurements DC electric fields in space charge environment. Effects of both unipolar and bipolar charge were investigated. In both cases the sensor output is linearly dependent on the intensity of measured electric field and independent of the space charge density. The achieved measurement resolution is 100 V/m with a dynamic range of 80 dB and a temperature stability of 0.1 %/0C for temperatures near 20 0C.
Keywords:
space charge, electric field measurement, Pockel’s effect, linear electro-optic effect
