Comprehensive remote calibration of detectors in a radiological surveillance network: From basic response to high-level data analysis

We present a new procedure to remotely calibrate gamma spectrometry detectors installed in the open air used in surveillance networks. The procedure includes energy calibration, determination of the energy resolution and estimation of the activity concentration. Our Proportional ROI-Cleaning algorithm (Cerezo et al., 2023) has been applied to different detector types and dimensions (LaBr 3 (Ce), SrI 2 (Eu) and NaI(Tl)). These detectors are assembled in different measuring configurations (direct and with particulate filter). The usefulness of our method as a surveillance technique was confirmed by the detection of 75 Se, 131 I, 192 Ir and 60 Co in some locations of the Radiological Surveillance Network of Catalonia (Spain). • We developed a general methodology for environmental surveillance networks. • The methodology is used for gamma spectrometers remote calibration. • We analyse gamma spectra with a self-developed spectral-windows-technique algorithm. • Real time artificial isotopes detections are presented. • The methodology was applied to every detector presented in this article.