Work

Low background facility for ionizing radiation at LNE LNHB: Design and traceability

Year: 2025

Type: conference-paper

Abstract: This paper presents the set up of a low background calibration facility aimed at calibrating environment survey meter. The facility is a lead box 100 cm x 100 cm x 125 cm with 2.5 cm thickness walls, the Caesium 137 source is located in a conical collimator including an internal cavity for the source. The ambient dose equivalent rate in the beam of this facility varies between 300 and 80 nSv/h. This quantity is traceable to the air kerma national references of LNE-LNHB. The standard uncertainty for the ambient dose equivalent rate is about 2% and the uncertainty of the calibration coefficient od a survey meter, depending meanly on the uncertainty if the background measure, is estimated between 5% and 10%.

Source: EPJ Web of Conferences

DOI: 10.1051/epjconf/202532311001

Authors: J.M. Bordy, O. Khattabi, C. Chardeur, K. Lahlal, J. Plangnard

Institutions: Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, CEA Paris-Saclay - Etablissement de Saclay, Laboratoire d'Intégration des Systèmes et des Technologies, Laboratoire National Henri Becquerel

Language: English

Topic: Radioactive Decay and Measurement Techniques

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4409208524

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