The BiPo-3 detector for the measurement of ultra low natural radioactivities of thin materials
Creators: name: Barabash, A. S.
name: Basharina-Freshville, A.
name: Birdsall, E.
name: Blondel, S.
name: Blot, S.
name: Bongrand, M.
name: Boursette, D.
name: Brudanin, V.
name: Busto, J.
name: Caffrey, A. J.
name: Calvez, S.
name: Cascella, M.
name: Cebrián, S.
name: Cerna, C.
name: Cesar, J. P
name: Chauveau, E.
name: Chopra, A.
name: Dafní, T.
name: De Capua, S.
name: Duchesneau, D.
name: Durand, D.
name: Egorov, V.
name: Eurin, G.
name: Evans, J. J.
name: Fajt, L.
name: Filosofov, D.
name: Flack, R.
name: Garrido, X.
name: Gómez, H.
name: Guillon, B.
name: Guzowski, P.
name: Holý, K.
name: Hodák, R.
name: Huber, A.
name: Hugon, C.
name: Iguaz, F. J.
name: Irastorza, I. G.
name: Jeremie, A.
name: Jullian, S.
name: Kauer, M.
name: Klimenko, A.
name: Kochetov, O.
name: Konovalov, S. I.
name: Kovalenko, V.
name: Lang, K.
name: Lemière, Y.
name: Noblet, T. Le
name: Liptak, Z.
name: Liu, X. R.
name: Loaiza, P.
name: Lutter, G.
name: Luzón, G.
name: Macko, M.
name: Mamedov, F.
name: Marquet, C.
name: Mauger, F.
name: Morgan, B.
name: Mott, J.
name: Nemchenok, I.
name: Nomachi, M.
name: Nova, F.
name: Ohsumi, H.
name: de Solórzano, G. Oliviéro A. Ortiz
name: Pahlka, R. B.
name: Pater, J.
name: Perrot, F.
name: Piquemal, F.
name: Povinec, P.
name: Přidal, P.
name: Ramachers, Y. A.
name: Remoto, A.
name: Richards, B.
name: Riddle, C. L.
name: Rukhadze, E.
name: Saakyan, R.
name: Salazar, R.
name: Sarazin, X.
name: Shitov, Yu.
name: Simard, L.
name: Šimkovic, F.
name: Smetana, A.
name: Smolek, K.
name: Smolnikov, A.
name: Söldner-Rembold, S.
name: Soulé, B.
name: Štekl, I.
name: Thomas, J.
name: Timkin, V.
name: Torre, S.
name: Tretyak, Vl. I.
name: Tretyak, V. I.
name: Umatov, V. I.
name: Vilela, C.
name: Vorobel, V.
name: Waters, D.
name: Žukauskas, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The BiPo-3 detector, running in the Canfranc Underground Laboratory (Laboratorio Subterráneo de Canfranc, LSC, Spain) since 2013, is a low-radioactivity detector dedicated to measuring ultra low natural radionuclide contaminations of $^{208}$Tl ($^{232}$Th chain) and $^{214}$Bi ($^{238}$U chain) in thin materials. The total sensitive surface area of the detector is 3.6 m$^2$. The detector has been developed to measure radiopurity of the selenium double $β$-decay source foils of the SuperNEMO experiment. In this paper the design and performance of the detector, and results of the background measurements in $^{208}$Tl and $^{214}$Bi, are presented, and validation of the BiPo-3 measurement with a calibrated aluminium foil is discussed. Results of the $^{208}$Tl and $^{214}$Bi activity measurements of the first enriched $^{82}$Se foils of the double $β$-decay SuperNEMO experiment are reported. The sensitivity of the BiPo-3 detector for the measurement of the SuperNEMO $^{82}$Se foils is $\mathcal{A}$($^{208}$Tl) $&lt;2$ $μ$Bq/kg (90\% C.L.) and $\mathcal{A}$($^{214}$Bi) $&lt;140$ $μ$Bq/kg (90\% C.L.) after 6 months of measurement.
description: 37 pages, 29 figures