Evaluation of phoswich well detectors for radioxenon monitoring

Systems to monitor radioactive xenon in the atmosphere, part of an international network to detect nuclear weapons testing, often employ beta-gamma coincidence measurements to increase sensitivity. Existing coincidence systems use separate detectors for beta and gamma radiation and thus require several electronics readout channels that are cumbersome to set up and calibrate. To simplify such systems, we designed phoswich well detectors which require only a single readout channel and evaluated their performance for radioxenon detection.