Characterization of SABRE crystal NaI-33 with direct underground counting
Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the r...
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| Autor*in: |
M. Antonello [verfasserIn] I. J. Arnquist [verfasserIn] E. Barberio [verfasserIn] T. Baroncelli [verfasserIn] J. Benziger [verfasserIn] L. J. Bignell [verfasserIn] I. Bolognino [verfasserIn] F. Calaprice [verfasserIn] S. Copello [verfasserIn] I. Dafinei [verfasserIn] D. D’Angelo [verfasserIn] G. D’Imperio [verfasserIn] M. D’Incecco [verfasserIn] G. Di Carlo [verfasserIn] M. Diemoz [verfasserIn] A. Di Giacinto [verfasserIn] A. Di Ludovico [verfasserIn] W. Dix [verfasserIn] A. R. Duffy [verfasserIn] E. Hoppe [verfasserIn] A. Ianni [verfasserIn] M. Iannone [verfasserIn] L. Ioannucci [verfasserIn] S. Krishnan [verfasserIn] G. J. Lane [verfasserIn] I. Mahmood [verfasserIn] A. Mariani [verfasserIn] S. Milana [verfasserIn] J. Mould [verfasserIn] F. Nuti [verfasserIn] D. Orlandi [verfasserIn] V. Pettinacci [verfasserIn] L. Pietrofaccia [verfasserIn] S. Rahatlou [verfasserIn] F. Scutti [verfasserIn] M. Souza [verfasserIn] A. E. Stuchbery [verfasserIn] B. Suerfu [verfasserIn] C. Tomei [verfasserIn] P. Urquijo [verfasserIn] C. Vignoli [verfasserIn] A. Wallner [verfasserIn] M. Wada [verfasserIn] A. G. Williams [verfasserIn] A. Zani [verfasserIn] M. Zurowski [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Übergeordnetes Werk: |
In: European Physical Journal C: Particles and Fields - SpringerOpen, 2017, 81(2021), 4, Seite 11 |
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| Übergeordnetes Werk: |
volume:81 ; year:2021 ; number:4 ; pages:11 |
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Link aufrufen |
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| DOI / URN: |
10.1140/epjc/s10052-021-09098-5 |
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| Katalog-ID: |
DOAJ052100340 |
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| 100 | 0 | |a M. Antonello |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Characterization of SABRE crystal NaI-33 with direct underground counting |
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| 520 | |a Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. | ||
| 653 | 0 | |a Astrophysics | |
| 653 | 0 | |a Nuclear and particle physics. Atomic energy. Radioactivity | |
| 700 | 0 | |a I. J. Arnquist |e verfasserin |4 aut | |
| 700 | 0 | |a E. Barberio |e verfasserin |4 aut | |
| 700 | 0 | |a T. Baroncelli |e verfasserin |4 aut | |
| 700 | 0 | |a J. Benziger |e verfasserin |4 aut | |
| 700 | 0 | |a L. J. Bignell |e verfasserin |4 aut | |
| 700 | 0 | |a I. Bolognino |e verfasserin |4 aut | |
| 700 | 0 | |a F. Calaprice |e verfasserin |4 aut | |
| 700 | 0 | |a S. Copello |e verfasserin |4 aut | |
| 700 | 0 | |a I. Dafinei |e verfasserin |4 aut | |
| 700 | 0 | |a D. D’Angelo |e verfasserin |4 aut | |
| 700 | 0 | |a G. D’Imperio |e verfasserin |4 aut | |
| 700 | 0 | |a M. D’Incecco |e verfasserin |4 aut | |
| 700 | 0 | |a G. Di Carlo |e verfasserin |4 aut | |
| 700 | 0 | |a M. Diemoz |e verfasserin |4 aut | |
| 700 | 0 | |a A. Di Giacinto |e verfasserin |4 aut | |
| 700 | 0 | |a A. Di Ludovico |e verfasserin |4 aut | |
| 700 | 0 | |a W. Dix |e verfasserin |4 aut | |
| 700 | 0 | |a A. R. Duffy |e verfasserin |4 aut | |
| 700 | 0 | |a E. Hoppe |e verfasserin |4 aut | |
| 700 | 0 | |a A. Ianni |e verfasserin |4 aut | |
| 700 | 0 | |a M. Iannone |e verfasserin |4 aut | |
| 700 | 0 | |a L. Ioannucci |e verfasserin |4 aut | |
| 700 | 0 | |a S. Krishnan |e verfasserin |4 aut | |
| 700 | 0 | |a G. J. Lane |e verfasserin |4 aut | |
| 700 | 0 | |a I. Mahmood |e verfasserin |4 aut | |
| 700 | 0 | |a A. Mariani |e verfasserin |4 aut | |
| 700 | 0 | |a S. Milana |e verfasserin |4 aut | |
| 700 | 0 | |a J. Mould |e verfasserin |4 aut | |
| 700 | 0 | |a F. Nuti |e verfasserin |4 aut | |
| 700 | 0 | |a D. Orlandi |e verfasserin |4 aut | |
| 700 | 0 | |a V. Pettinacci |e verfasserin |4 aut | |
| 700 | 0 | |a L. Pietrofaccia |e verfasserin |4 aut | |
| 700 | 0 | |a S. Rahatlou |e verfasserin |4 aut | |
| 700 | 0 | |a F. Scutti |e verfasserin |4 aut | |
| 700 | 0 | |a M. Souza |e verfasserin |4 aut | |
| 700 | 0 | |a A. E. Stuchbery |e verfasserin |4 aut | |
| 700 | 0 | |a B. Suerfu |e verfasserin |4 aut | |
| 700 | 0 | |a C. Tomei |e verfasserin |4 aut | |
| 700 | 0 | |a P. Urquijo |e verfasserin |4 aut | |
| 700 | 0 | |a C. Vignoli |e verfasserin |4 aut | |
| 700 | 0 | |a A. Wallner |e verfasserin |4 aut | |
| 700 | 0 | |a M. Wada |e verfasserin |4 aut | |
| 700 | 0 | |a A. G. Williams |e verfasserin |4 aut | |
| 700 | 0 | |a A. Zani |e verfasserin |4 aut | |
| 700 | 0 | |a M. Zurowski |e verfasserin |4 aut | |
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10.1140/epjc/s10052-021-09098-5 doi (DE-627)DOAJ052100340 (DE-599)DOAJd5d1ce3b265a4a3984b7739f464d3437 DE-627 ger DE-627 rakwb eng QB460-466 QC770-798 M. Antonello verfasserin aut Characterization of SABRE crystal NaI-33 with direct underground counting 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. Astrophysics Nuclear and particle physics. Atomic energy. Radioactivity I. J. Arnquist verfasserin aut E. Barberio verfasserin aut T. Baroncelli verfasserin aut J. Benziger verfasserin aut L. J. Bignell verfasserin aut I. Bolognino verfasserin aut F. Calaprice verfasserin aut S. Copello verfasserin aut I. Dafinei verfasserin aut D. D’Angelo verfasserin aut G. D’Imperio verfasserin aut M. D’Incecco verfasserin aut G. Di Carlo verfasserin aut M. Diemoz verfasserin aut A. Di Giacinto verfasserin aut A. Di Ludovico verfasserin aut W. Dix verfasserin aut A. R. Duffy verfasserin aut E. Hoppe verfasserin aut A. Ianni verfasserin aut M. Iannone verfasserin aut L. Ioannucci verfasserin aut S. Krishnan verfasserin aut G. J. Lane verfasserin aut I. Mahmood verfasserin aut A. Mariani verfasserin aut S. Milana verfasserin aut J. Mould verfasserin aut F. Nuti verfasserin aut D. Orlandi verfasserin aut V. Pettinacci verfasserin aut L. Pietrofaccia verfasserin aut S. Rahatlou verfasserin aut F. Scutti verfasserin aut M. Souza verfasserin aut A. E. Stuchbery verfasserin aut B. Suerfu verfasserin aut C. Tomei verfasserin aut P. Urquijo verfasserin aut C. Vignoli verfasserin aut A. Wallner verfasserin aut M. Wada verfasserin aut A. G. Williams verfasserin aut A. Zani verfasserin aut M. Zurowski verfasserin aut In European Physical Journal C: Particles and Fields SpringerOpen, 2017 81(2021), 4, Seite 11 (DE-627)253722934 (DE-600)1459069-4 14346052 nnns volume:81 year:2021 number:4 pages:11 https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/article/d5d1ce3b265a4a3984b7739f464d3437 kostenfrei https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/toc/1434-6044 Journal toc kostenfrei https://doaj.org/toc/1434-6052 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_267 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 81 2021 4 11 |
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10.1140/epjc/s10052-021-09098-5 doi (DE-627)DOAJ052100340 (DE-599)DOAJd5d1ce3b265a4a3984b7739f464d3437 DE-627 ger DE-627 rakwb eng QB460-466 QC770-798 M. Antonello verfasserin aut Characterization of SABRE crystal NaI-33 with direct underground counting 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. Astrophysics Nuclear and particle physics. Atomic energy. Radioactivity I. J. Arnquist verfasserin aut E. Barberio verfasserin aut T. Baroncelli verfasserin aut J. Benziger verfasserin aut L. J. Bignell verfasserin aut I. Bolognino verfasserin aut F. Calaprice verfasserin aut S. Copello verfasserin aut I. Dafinei verfasserin aut D. D’Angelo verfasserin aut G. D’Imperio verfasserin aut M. D’Incecco verfasserin aut G. Di Carlo verfasserin aut M. Diemoz verfasserin aut A. Di Giacinto verfasserin aut A. Di Ludovico verfasserin aut W. Dix verfasserin aut A. R. Duffy verfasserin aut E. Hoppe verfasserin aut A. Ianni verfasserin aut M. Iannone verfasserin aut L. Ioannucci verfasserin aut S. Krishnan verfasserin aut G. J. Lane verfasserin aut I. Mahmood verfasserin aut A. Mariani verfasserin aut S. Milana verfasserin aut J. Mould verfasserin aut F. Nuti verfasserin aut D. Orlandi verfasserin aut V. Pettinacci verfasserin aut L. Pietrofaccia verfasserin aut S. Rahatlou verfasserin aut F. Scutti verfasserin aut M. Souza verfasserin aut A. E. Stuchbery verfasserin aut B. Suerfu verfasserin aut C. Tomei verfasserin aut P. Urquijo verfasserin aut C. Vignoli verfasserin aut A. Wallner verfasserin aut M. Wada verfasserin aut A. G. Williams verfasserin aut A. Zani verfasserin aut M. Zurowski verfasserin aut In European Physical Journal C: Particles and Fields SpringerOpen, 2017 81(2021), 4, Seite 11 (DE-627)253722934 (DE-600)1459069-4 14346052 nnns volume:81 year:2021 number:4 pages:11 https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/article/d5d1ce3b265a4a3984b7739f464d3437 kostenfrei https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/toc/1434-6044 Journal toc kostenfrei https://doaj.org/toc/1434-6052 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_267 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 81 2021 4 11 |
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10.1140/epjc/s10052-021-09098-5 doi (DE-627)DOAJ052100340 (DE-599)DOAJd5d1ce3b265a4a3984b7739f464d3437 DE-627 ger DE-627 rakwb eng QB460-466 QC770-798 M. Antonello verfasserin aut Characterization of SABRE crystal NaI-33 with direct underground counting 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. Astrophysics Nuclear and particle physics. Atomic energy. Radioactivity I. J. Arnquist verfasserin aut E. Barberio verfasserin aut T. Baroncelli verfasserin aut J. Benziger verfasserin aut L. J. Bignell verfasserin aut I. Bolognino verfasserin aut F. Calaprice verfasserin aut S. Copello verfasserin aut I. Dafinei verfasserin aut D. D’Angelo verfasserin aut G. D’Imperio verfasserin aut M. D’Incecco verfasserin aut G. Di Carlo verfasserin aut M. Diemoz verfasserin aut A. Di Giacinto verfasserin aut A. Di Ludovico verfasserin aut W. Dix verfasserin aut A. R. Duffy verfasserin aut E. Hoppe verfasserin aut A. Ianni verfasserin aut M. Iannone verfasserin aut L. Ioannucci verfasserin aut S. Krishnan verfasserin aut G. J. Lane verfasserin aut I. Mahmood verfasserin aut A. Mariani verfasserin aut S. Milana verfasserin aut J. Mould verfasserin aut F. Nuti verfasserin aut D. Orlandi verfasserin aut V. Pettinacci verfasserin aut L. Pietrofaccia verfasserin aut S. Rahatlou verfasserin aut F. Scutti verfasserin aut M. Souza verfasserin aut A. E. Stuchbery verfasserin aut B. Suerfu verfasserin aut C. Tomei verfasserin aut P. Urquijo verfasserin aut C. Vignoli verfasserin aut A. Wallner verfasserin aut M. Wada verfasserin aut A. G. Williams verfasserin aut A. Zani verfasserin aut M. Zurowski verfasserin aut In European Physical Journal C: Particles and Fields SpringerOpen, 2017 81(2021), 4, Seite 11 (DE-627)253722934 (DE-600)1459069-4 14346052 nnns volume:81 year:2021 number:4 pages:11 https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/article/d5d1ce3b265a4a3984b7739f464d3437 kostenfrei https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/toc/1434-6044 Journal toc kostenfrei https://doaj.org/toc/1434-6052 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_267 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 81 2021 4 11 |
| allfieldsGer |
10.1140/epjc/s10052-021-09098-5 doi (DE-627)DOAJ052100340 (DE-599)DOAJd5d1ce3b265a4a3984b7739f464d3437 DE-627 ger DE-627 rakwb eng QB460-466 QC770-798 M. Antonello verfasserin aut Characterization of SABRE crystal NaI-33 with direct underground counting 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. Astrophysics Nuclear and particle physics. Atomic energy. Radioactivity I. J. Arnquist verfasserin aut E. Barberio verfasserin aut T. Baroncelli verfasserin aut J. Benziger verfasserin aut L. J. Bignell verfasserin aut I. Bolognino verfasserin aut F. Calaprice verfasserin aut S. Copello verfasserin aut I. Dafinei verfasserin aut D. D’Angelo verfasserin aut G. D’Imperio verfasserin aut M. D’Incecco verfasserin aut G. Di Carlo verfasserin aut M. Diemoz verfasserin aut A. Di Giacinto verfasserin aut A. Di Ludovico verfasserin aut W. Dix verfasserin aut A. R. Duffy verfasserin aut E. Hoppe verfasserin aut A. Ianni verfasserin aut M. Iannone verfasserin aut L. Ioannucci verfasserin aut S. Krishnan verfasserin aut G. J. Lane verfasserin aut I. Mahmood verfasserin aut A. Mariani verfasserin aut S. Milana verfasserin aut J. Mould verfasserin aut F. Nuti verfasserin aut D. Orlandi verfasserin aut V. Pettinacci verfasserin aut L. Pietrofaccia verfasserin aut S. Rahatlou verfasserin aut F. Scutti verfasserin aut M. Souza verfasserin aut A. E. Stuchbery verfasserin aut B. Suerfu verfasserin aut C. Tomei verfasserin aut P. Urquijo verfasserin aut C. Vignoli verfasserin aut A. Wallner verfasserin aut M. Wada verfasserin aut A. G. Williams verfasserin aut A. Zani verfasserin aut M. Zurowski verfasserin aut In European Physical Journal C: Particles and Fields SpringerOpen, 2017 81(2021), 4, Seite 11 (DE-627)253722934 (DE-600)1459069-4 14346052 nnns volume:81 year:2021 number:4 pages:11 https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/article/d5d1ce3b265a4a3984b7739f464d3437 kostenfrei https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/toc/1434-6044 Journal toc kostenfrei https://doaj.org/toc/1434-6052 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_267 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 81 2021 4 11 |
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10.1140/epjc/s10052-021-09098-5 doi (DE-627)DOAJ052100340 (DE-599)DOAJd5d1ce3b265a4a3984b7739f464d3437 DE-627 ger DE-627 rakwb eng QB460-466 QC770-798 M. Antonello verfasserin aut Characterization of SABRE crystal NaI-33 with direct underground counting 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. Astrophysics Nuclear and particle physics. Atomic energy. Radioactivity I. J. Arnquist verfasserin aut E. Barberio verfasserin aut T. Baroncelli verfasserin aut J. Benziger verfasserin aut L. J. Bignell verfasserin aut I. Bolognino verfasserin aut F. Calaprice verfasserin aut S. Copello verfasserin aut I. Dafinei verfasserin aut D. D’Angelo verfasserin aut G. D’Imperio verfasserin aut M. D’Incecco verfasserin aut G. Di Carlo verfasserin aut M. Diemoz verfasserin aut A. Di Giacinto verfasserin aut A. Di Ludovico verfasserin aut W. Dix verfasserin aut A. R. Duffy verfasserin aut E. Hoppe verfasserin aut A. Ianni verfasserin aut M. Iannone verfasserin aut L. Ioannucci verfasserin aut S. Krishnan verfasserin aut G. J. Lane verfasserin aut I. Mahmood verfasserin aut A. Mariani verfasserin aut S. Milana verfasserin aut J. Mould verfasserin aut F. Nuti verfasserin aut D. Orlandi verfasserin aut V. Pettinacci verfasserin aut L. Pietrofaccia verfasserin aut S. Rahatlou verfasserin aut F. Scutti verfasserin aut M. Souza verfasserin aut A. E. Stuchbery verfasserin aut B. Suerfu verfasserin aut C. Tomei verfasserin aut P. Urquijo verfasserin aut C. Vignoli verfasserin aut A. Wallner verfasserin aut M. Wada verfasserin aut A. G. Williams verfasserin aut A. Zani verfasserin aut M. Zurowski verfasserin aut In European Physical Journal C: Particles and Fields SpringerOpen, 2017 81(2021), 4, Seite 11 (DE-627)253722934 (DE-600)1459069-4 14346052 nnns volume:81 year:2021 number:4 pages:11 https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/article/d5d1ce3b265a4a3984b7739f464d3437 kostenfrei https://doi.org/10.1140/epjc/s10052-021-09098-5 kostenfrei https://doaj.org/toc/1434-6044 Journal toc kostenfrei https://doaj.org/toc/1434-6052 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_267 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 81 2021 4 11 |
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M. Antonello @@aut@@ I. J. Arnquist @@aut@@ E. Barberio @@aut@@ T. Baroncelli @@aut@@ J. Benziger @@aut@@ L. J. Bignell @@aut@@ I. Bolognino @@aut@@ F. Calaprice @@aut@@ S. Copello @@aut@@ I. Dafinei @@aut@@ D. D’Angelo @@aut@@ G. D’Imperio @@aut@@ M. D’Incecco @@aut@@ G. Di Carlo @@aut@@ M. Diemoz @@aut@@ A. Di Giacinto @@aut@@ A. Di Ludovico @@aut@@ W. Dix @@aut@@ A. R. Duffy @@aut@@ E. Hoppe @@aut@@ A. Ianni @@aut@@ M. Iannone @@aut@@ L. Ioannucci @@aut@@ S. Krishnan @@aut@@ G. J. Lane @@aut@@ I. Mahmood @@aut@@ A. Mariani @@aut@@ S. Milana @@aut@@ J. Mould @@aut@@ F. Nuti @@aut@@ D. Orlandi @@aut@@ V. Pettinacci @@aut@@ L. Pietrofaccia @@aut@@ S. Rahatlou @@aut@@ F. Scutti @@aut@@ M. Souza @@aut@@ A. E. Stuchbery @@aut@@ B. Suerfu @@aut@@ C. Tomei @@aut@@ P. Urquijo @@aut@@ C. Vignoli @@aut@@ A. Wallner @@aut@@ M. Wada @@aut@@ A. G. Williams @@aut@@ A. Zani @@aut@@ M. Zurowski @@aut@@ |
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M. Antonello misc QB460-466 misc QC770-798 misc Astrophysics misc Nuclear and particle physics. Atomic energy. Radioactivity Characterization of SABRE crystal NaI-33 with direct underground counting |
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M. Antonello I. J. Arnquist E. Barberio T. Baroncelli J. Benziger L. J. Bignell I. Bolognino F. Calaprice S. Copello I. Dafinei D. D’Angelo G. D’Imperio M. D’Incecco G. Di Carlo M. Diemoz A. Di Giacinto A. Di Ludovico W. Dix A. R. Duffy E. Hoppe A. Ianni M. Iannone L. Ioannucci S. Krishnan G. J. Lane I. Mahmood A. Mariani S. Milana J. Mould F. Nuti D. Orlandi V. Pettinacci L. Pietrofaccia S. Rahatlou F. Scutti M. Souza A. E. Stuchbery B. Suerfu C. Tomei P. Urquijo C. Vignoli A. Wallner M. Wada A. G. Williams A. Zani M. Zurowski |
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characterization of sabre crystal nai-33 with direct underground counting |
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Characterization of SABRE crystal NaI-33 with direct underground counting |
| abstract |
Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. |
| abstractGer |
Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. |
| abstract_unstemmed |
Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region. |
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Characterization of SABRE crystal NaI-33 with direct underground counting |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">DOAJ052100340</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230308164139.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230227s2021 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1140/epjc/s10052-021-09098-5</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)DOAJ052100340</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)DOAJd5d1ce3b265a4a3984b7739f464d3437</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QB460-466</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QC770-798</subfield></datafield><datafield tag="100" ind1="0" ind2=" "><subfield code="a">M. Antonello</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Characterization of SABRE crystal NaI-33 with direct underground counting</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2021</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of the long standing DAMA result and a powerful means to search for the annual modulation signature of dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques for the reduction of intrinsic backgrounds over several years. In this paper we report the first characterization of a 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 has a record low $$^{39}$$ 39 K contamination of 4.3 ± 0.2 ppb as determined by mass spectrometry. We measured a light yield of 11.1 ± 0.2 photoelectrons/keV and an energy resolution of 13.2% (FWHM/E) at 59.5 keV. We evaluated the activities of $$^{226}$$ 226 Ra and $$^{228}$$ 228 Th inside the crystal to be $$5.9\pm 0.6~\upmu $$ 5.9 ± 0.6 μ Bq/kg and $$1.6\pm 0.3~\upmu $$ 1.6 ± 0.3 μ Bq/kg, respectively, which would indicate a contamination from $$^{238}$$ 238 U and $$^{232}$$ 232 Th at part-per-trillion level. We measured an activity of 0.51 ± 0.02 mBq/kg due to $$^{210}$$ 210 Pb out of equilibrium and a $$\alpha $$ α quenching factor of 0.63 ± 0.01 at 5304 keV. We illustrate the analyses techniques developed to reject electronic noise in the lower part of the energy spectrum. A cut-based strategy and a multivariate approach indicated a rate, attributed to the intrinsic radioactivity of the crystal, of $$\sim $$ ∼ 1 count/day/kg/keV in the [5–20] keV region.</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Astrophysics</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Nuclear and particle physics. Atomic energy. Radioactivity</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">I. J. Arnquist</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">E. Barberio</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">T. 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