CERN Accelerating science

Article
Title Qualification of gamma spectrometry measurement for the radiological characterization of mixed VLLW cables in particle accelerators
Author(s) Rimlinger, Maeva (CERN) ; Frosio, Thomas (CERN) ; Menaa, Nabil (CERN) ; Magistris, Matteo (CERN) ; Theis, Chris (CERN)
Publication 2020
Number of pages 10
In: Appl. Radiat. Isot. 166 (2020) 109419
DOI 10.1016/j.apradiso.2020.109419
Subject category Nuclear Physics - Experiment ; Accelerators and Storage Rings
Abstract In the framework of maintenance activities in particle accelerators, such as upgrades and dismantling, a large number of activated equipment are removed from the accelerator complex and require characterization in view of their disposal as radioactive waste. In particular, cables can be of different types. This feature induces variations of the efficiency calibration curves due to the variation of the material composition, source distribution and density. Hence, quantifying the activities of the gamma-emitting radionuclides can be quite challenging for mixed cables. In this article, we propose a new qualification methodology, based on gamma spectrometry, in order to assess the activity results uncertainties of gamma-emitting radionuclides. This new methodology is developed to define the envelop efficiency calibration curves and allows for the establishment of more accurate activity values with their corresponding uncertainties.
Copyright/License © 2020 The Authors (License: CC-BY-4.0)

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