title: A large HPGe detector for the non-destructive radioassay of an ultra-low-background counting facility.
abstract: We present the use of a low background counting facility, equipped with a p-type 80% relative efficiency HPGe detector, protected by active and passive shielding, and large enough to count a 10 in photo-multiplier tube (PMT). A GEANT4 Monte-Carlo of this detector was developed and tuned to 3% accuracy. We report the U, Th, and K content in three different types of PMTs used in current neutrino experiments, with accuracies of ~10ppb for U and Th and of ~15ppm for K.
authors.affiliation: Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre de Saclay, IRFU/SPP, Gif-sur-Yvette, France. maximilien.fechner@cea.fr
authors.forename: M
authors.initials: M
authors.lastname: Fechner
authors.forename: C
authors.initials: C
authors.lastname: Henson
authors.forename: J
authors.initials: J
authors.lastname: Gaffiot
authors.forename: T
authors.initials: T
authors.lastname: Lasserre
authors.forename: A
authors.initials: A
authors.lastname: Letourneau
authors.forename: D
authors.initials: D
authors.lastname: Lhuillier
authors.forename: G
authors.initials: G
authors.lastname: Mention
authors.forename: Th A
authors.initials: TA
authors.lastname: Mueller
authors.forename: R
authors.initials: R
authors.lastname: Quéval
authors.forename: R
authors.initials: R
authors.lastname: Svoboda