28 June 2021 to 2 July 2021
Europe/Vienna timezone

Improving the sensitivity for radioxenon beta-gamma measurements by optimizing the ROI limits for each sample

1 Jul 2021, 09:00


e-Poster T3.5 - Data Analysis Algorithms T3.5 e-poster session


Mr Anders Ringbom (Swedish Defence Research Agency (FOI), Stockholm, Sweden)


Current techniques used for analyzing beta-gamma spectra measured by radioxenon systems are based on Regions-of-Interest (ROIs) covering relevant decay modes. The ROIs are set in the detector calibration procedure, and the same ROIs are used for all samples. However, the optimal ROI limits generally will be different for each sample. We present at new method where the optimal ROI settings are calculated for each sample by minimizing the MDA using differential evolution (DE), which is an optimization method used for real-valued multi-dimensional functions, not necessarily differentiable. For some detectors, we find that the MDA is decreased by up to 50%. Possible consequences for the standard analysis procedure used for radioxenon systems will be discussed.

Promotional text

This analysis method will improve the measurement sensitivity of radioxenon beta-gamma systems. For some systems, the improvement is very large, up to 50%.

Primary author

Mr Anders Ringbom (Swedish Defence Research Agency (FOI), Stockholm, Sweden)

Presentation materials