/ physics.ins-det arXiv:1702.07176


The BiPo-3 detector for the measurement of ultra low natural radioactivities of thin materials


Barabash, A.S. (Moscow, ITEP) ; Basharina-Freshville, A. (Manchester U.) ; Birdsall, E. (Manchester U.) ; Blondel, S. (Orsay, LAL) ; Blot, S. (Manchester U.) ; Bongrand, M. (Orsay, LAL) ; Boursette, D. (Orsay, LAL) ; Brudanin, V. (Moscow Phys. Eng. Inst.) ; Busto, J. (Marseille, CPPM) ; Caffrey, A.J. (Idaho Natl. Lab.) ; Calvez, S. (Orsay, LAL) ; Cascella, M. (University Coll. London) ; Cebrián, S. (Zaragoza U.) ; Cerna, C. (CENBG, Gradignan) ; P Cesar, J. (Texas U.) ; Chauveau, E. (CENBG, Gradignan) ; Chopra, A. (University Coll. London) ; Dafní, T. (Zaragoza U.) ; De Capua, S. (Manchester U.) ; Duchesneau, D. (Annecy, LAPP) ; Durand, D. (ENSICAEN) ; Egorov, V. (Dubna, JINR) ; Eurin, G. (University Coll. London) ; Evans, J.J. (Manchester U.) ; Fajt, L. (IEAP CTU, Prague) ; Filosofov, D. (Dubna, JINR) ; Flack, R. (University Coll. London) ; Garrido, X. (Orsay, LAL) ; Gómez, H. (Orsay, LAL) ; Guillon, B. (ENSICAEN) ; Guzowski, P. (Manchester U.) ; Holý, K. (Comenius U.) ; Hodák, R. (IEAP CTU, Prague) ; Huber, A. (CENBG, Gradignan) ; Hugon, C. (CENBG, Gradignan) ; Iguaz, F.J. (Zaragoza U.) ; Irastorza, I.G. (Zaragoza U.) ; Jeremie, A. (Annecy, LAPP) ; Jullian, S. (Orsay, LAL) ; Kauer, M. (University Coll. London) ; Klimenko, A. (Dubna, JINR) ; Kochetov, O. (Dubna, JINR) ; Konovalov, S.I. (Moscow, ITEP) ; Kovalenko, V. (Dubna, JINR) ; Lang, K. (Texas U.) ; Lemière, Y. (ENSICAEN) ; Le Noblet, T. (Annecy, LAPP) ; Liptak, Z. (Texas U.) ; Liu, X.R. (University Coll. London) ; Loaiza, P. (Orsay, LAL) ; Lutter, G. (CENBG, Gradignan) ; Luzón, G. (Zaragoza U.) ; Macko, M. (Comenius U.) ; Mamedov, F. (IEAP CTU, Prague) ; Marquet, C. (CENBG, Gradignan) ; Mauger, F. (ENSICAEN) ; Morgan, B. (Warwick U.) ; Mott, J. (University Coll. London) ; Nemchenok, I. (Dubna, JINR) ; Nomachi, M. (Osaka U.) ; Nova, F. (Texas U.) ; Ohsumi, H. (Saga U., Japan) ; Oliviéro, G. (ENSICAEN) ; Ortiz de Solórzano, A. (Zaragoza U.) ; Pahlka, R.B. (Texas U.) ; Pater, J. (Manchester U.) ; Perrot, F. (CENBG, Gradignan) ; Piquemal, F. (Modane, Lab. Souterrain) ; Povinec, P. (Comenius U.) ; Přidal, P. (IEAP CTU, Prague) ; Ramachers, Y.A. (Warwick U.) ; Remoto, A. (Annecy, LAPP) ; Richards, B. (University Coll. London) ; Riddle, C.L. (Idaho Natl. Lab.) ; Rukhadze, E. (IEAP CTU, Prague) ; Saakyan, R. (University Coll. London) ; Salazar, R. (Texas U.) ; Sarazin, X. (Orsay, LAL) ; Shitov, Yu. (Imperial Coll., London) ; Simard, L. (Inst. U. de France) ; Šimkovic, F. (Comenius U.) ; Smetana, A. (IEAP CTU, Prague) ; Smolek, K. (IEAP CTU, Prague) ; Smolnikov, A. (Dubna, JINR) ; Söldner-Rembold, S. (Manchester U.) ; Soulé, B. (CENBG, Gradignan) ; Štekl, I. (IEAP CTU, Prague) ; Thomas, J. (University Coll. London) ; Timkin, V. (Dubna, JINR) ; Torre, S. (University Coll. London) ; Tretyak, Vl.I. (Kiev, INR) ; Tretyak, V.I. (Dubna, JINR) ; Umatov, V.I. (Moscow, ITEP) ; Vilela, C. (University Coll. London) ; Vorobel, V. (Charles U.) ; Waters, D. (University Coll. London) ; Žukauskas, A. (Charles U.)

Pages: 37

Abstract: The BiPo-3 detector, running in the Canfranc Underground Laboratory (Laboratorio Subterr\'aneo 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 $\beta$-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 $\beta$-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) $<2$ $\mu$Bq/kg (90\% C.L.) and $\mathcal{A}$($^{214}$Bi) $<140$ $\mu$Bq/kg (90\% C.L.) after 6 months of measurement.

Web-Page: http://inspirehep.net/record/1514927/files/se_foil_214_delaytime.png; http://inspirehep.net/record/1514927/files/sensitivity_212_foils.png; http://inspirehep.net/record/1514927/files/bkg_214_M1DS5_prompt_energy.png; http://inspirehep.net/record/1514927/files/bkg_212_delay_energy.png; http://inspirehep.net/record/1514927/files/alu_212_one_foil_delay_time.png; http://inspirehep.net/record/1514927/files/bkg_214_ext_radon_300kev.png; http://inspirehep.net/record/1514927/files/bkg_214_M2DS1_prompt_energy.png; http://inspirehep.net/record/1514927/files/bkg_214_M2DS1_delay_energy.png; http://inspirehep.net/record/1514927/files/bkg_212_prompt_energy.png; http://inspirehep.net/record/1514927/files/bkg_214_M1DS5_delay_energy.png; http://inspirehep.net/record/1514927/files/alu_212_two_foils_delay_time.png; http://inspirehep.net/record/1514927/files/bkg_214_ext_radon.png; http://inspirehep.net/record/1514927/files/irrad_mylar_alpha_214.png; http://inspirehep.net/record/1514927/files/coinc_noradon_Fig_modifiee.png; http://inspirehep.net/record/1514927/files/se_foil_212_alpha.png; http://inspirehep.net/record/1514927/files/se_foil_212_e.png; http://inspirehep.net/record/1514927/files/alu_212_one_foil_alpha_r_1.png; http://inspirehep.net/record/1514927/files/alu_212_two_foils_alpha_r_1.png; http://inspirehep.net/record/1514927/files/alu_214_mod1_one_foil_dt_electron_2.png; http://inspirehep.net/record/1514927/files/alu_212_one_foil_electron_r_1.png; http://inspirehep.net/record/1514927/files/alu_212_two_foils_electron_r_1.png; http://inspirehep.net/record/1514927/files/alu_214_mod1_one_foil_standard_electron_1.png; http://inspirehep.net/record/1514927/files/se_foil_alpha_214.png; http://inspirehep.net/record/1514927/files/alu_214_mod1_one_foil_dt_alpha_2.png; http://inspirehep.net/record/1514927/files/shielding_new.png; http://inspirehep.net/record/1514927/files/sensitivity_214_foils.png; http://inspirehep.net/record/1514927/files/alu_214_mod2_one_foil_dt_electron_2.png; http://inspirehep.net/record/1514927/files/alu_214_mod1_one_foil_standard_alpha_1.png; http://inspirehep.net/record/1514927/files/alu_214_mod2_one_foil_standard_alpha_1.png; http://inspirehep.net/record/1514927/files/alu_214_module2_one_foil_dt_alpha_2.png; http://inspirehep.net/record/1514927/files/photo_se_foils.png; http://inspirehep.net/record/1514927/files/coinc_3_mod.png; http://inspirehep.net/record/1514927/files/fig2-a-eps-converted-to.png; http://inspirehep.net/record/1514927/files/se_foil_e_214.png; http://inspirehep.net/record/1514927/files/design_bipo3_1.png; http://inspirehep.net/record/1514927/files/quenching_factor.png; http://inspirehep.net/record/1514927/files/alu_214_mod2_one_foil_standard_electron_1.png; http://inspirehep.net/record/1514927/files/design_bipo3_3.png; http://inspirehep.net/record/1514927/files/charge_amplitude_display.png; http://inspirehep.net/record/1514927/files/fig2-b-eps-converted-to.png; http://inspirehep.net/record/1514927/files/coinc_radon_Fig_modifiee.png; http://inspirehep.net/record/1514927/files/scanning_law.png; http://inspirehep.net/record/1514927/files/calib_time_Fig_modifiee.png; http://inspirehep.net/record/1514927/files/display_bipo212.png; http://inspirehep.net/record/1514927/files/charge_amplitude_Fig_modifiee.png; http://inspirehep.net/record/1514927/files/bkg-schema.png; http://inspirehep.net/record/1514927/files/fig1-b-eps-converted-to.png; http://inspirehep.net/record/1514927/files/display_coinc.png; http://inspirehep.net/record/1514927/files/fig1-a-eps-converted-to.png; http://inspirehep.net/record/1514927/files/alu_214_mod1_one_foil_dt_delay_time.png; http://inspirehep.net/record/1514927/files/display_bipo214.png; http://inspirehep.net/record/1514927/files/alu_214_mod2_one_foil_dt_delay_time.png; http://inspirehep.net/record/1514927/files/bkg_214_M1DS5_fit_delay.png; http://inspirehep.net/record/1514927/files/se_foil_212_delaytime.png; http://inspirehep.net/record/1514927/files/alu_214_mod1_one_foil_standard_delay_time.png; http://inspirehep.net/record/1514927/files/calib_energy_1_Fig_modifiee.png; http://inspirehep.net/record/1514927/files/alu_212_pair_submodules_1.png; http://inspirehep.net/record/1514927/files/bkg_212_delay_time.png; http://inspirehep.net/record/1514927/files/bkg_214_M2DS1_fit_delay.png; http://inspirehep.net/record/1514927/files/alu_214_mod2_one_foil_standard_delay_time.png; http://inspirehep.net/record/1514927/files/arXiv:1702.07176.pdf


Note: 37 pages, 29 figures

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