Nuclear reactor pulse calibration using a CdZnTe electro-optic radiation detector
A CdZnTe electro-optic radiation detector was used to calibrate nuclear reactor pulses. The standard configuration of the Pockels cell has collimated light passing through an optically transparent CdZnTe crystal located between crossed polarizers. The transmitted light was focused onto an IR sensitive photodiode. Calibrations of reactor pulses were performed using the CdZnTe Pockels cell by measuring the change in the photodiode current, repeated 10 times for each set of reactor pulses, set between 1.00 and 2.50 dollars in 0.50 increments of reactivity.
► We demonstrated the first use of an electro-optic device to trace reactor pulses in real-time.
► We examined the changes in photodiode current for different reactivity insertions.
► Created a linear best fit line from the data set to predict peak pulse powers.
Fig. 1. Conceptual arrangement of a standard Pockels cell setup with a ‘dot’ contact crystal.
Source: Applied Radiation and Isotopes