Implementation of Additional Beta–Gamma Detectors for Improved Radioxenon Laboratory Throughput

The International Monitoring System includes a network of radionuclide detector stations and laboratories operated around the world monitoring for nuclear explosions. The United States Radionuclide Laboratory for radioxenon detection (USL16-NGL) was certified by the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization in 2016. Since the certification of the laboratory, an additional set of four radioxenon detectors have been added to the laboratory. These supplementary radioxenon detectors allow for improved throughput for the laboratory and improving the ability to measure short lived radioxenon isotopes. In this paper, we describe the implementation of the additional radioxenon detectors and how they compare to current capabilities. Additionally, we detail implementation procedures to leverage the increased throughput.