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arXiv · 1101.4000

A large HPGe detector for the non-destructive radioassay of an ultra-low-background counting facility

M. Fechner·C. Henson·J. Gaffiot·T. Lasserre·A. Letourneau·D. Lhuillier·G. Mention·Th. A. Mueller·R. Quéval·R. Svoboda
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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" 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 contents in three different types of PMTs used in current neutrino experiments, with accuracies of $\sim 10$ ppb for U and Th and of $\sim 15$ ppm for K.

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M. Fechner, C. Henson, J. Gaffiot, T. Lasserre, A. Letourneau, D. Lhuillier, G. Mention, Th. A. Mueller, R. Quéval, R. Svoboda. 2011-01-20. A large HPGe detector for the non-destructive radioassay of an ultra-low-background counting facility. https://arxiv.org/abs/1101.4000

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