title: Calibration of low-level beta-gamma coincidence detector systems for xenon isotope detection.
abstract: The beta-gamma coincidence detector systems used for the measurement of the CTBT-relevant xenon isotopes (Xe-131m, Xe-133m, Xe-133 and Xe-135) in the International Monitoring System network and in the On-Site Inspection are reviewed. These detectors typically consist of a well-type or bore-through NaI crystal into which a measurement cell, serving also as a sample container, is inserted. This work describes the current calibration procedure for energy, resolution and efficiency, implementation challenges, availability and uncertainties of the specific nuclear decay data and the path forward to full calibration validation using GEANT4.
authors.affiliation: CTBTO Preparatory Commission, P.O. Box 1200, 1400 Vienna, Austria. Electronic address: kirill.khrustalev@ctbto.org.
authors.forename: K
authors.initials: K
authors.lastname: Khrustalev
authors.affiliation: CTBTO Preparatory Commission, P.O. Box 1200, 1400 Vienna, Austria.
authors.forename: J S E
authors.initials: JSE
authors.lastname: Wieslander
authors.affiliation: CTBTO Preparatory Commission, P.O. Box 1200, 1400 Vienna, Austria.
authors.forename: M
authors.initials: M
authors.lastname: Auer
authors.affiliation: CTBTO Preparatory Commission, P.O. Box 1200, 1400 Vienna, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Gheddou
keywords: Beta-gamma detector; CTBT; Calibration methods; Coincidence detector systems; GEANT4; IMS; Monte Carlo; OSI; Radioxenon; SAUNA; SiPIN; Xenon