222Rn emanation measurements for the XENON1T experiment
Abstract: The selection of low-radioactive construction materials is of utmost importance for the success of low-energy rare event search experiments. Besides radioactive contaminants in the bulk, the emanation of radioactive radon atoms from material surfaces attains increasing relevance in the effort to further reduce the background of such experiments. In this work, we present the 222Rn emanation measurements performed for the XENON1T dark matter experiment. Together with the bulk impurity screening campaign, the results enabled us to select the radio-purest construction materials, targeting a 222Rn activity concentration of 10 μBq/kg in 3.2 t of xenon. The knowledge of the distribution of the 222Rn sources allowed us to selectively eliminate critical components in the course of the experiment. The predictions from the emanation measurements were compared to data of the 222Rn activity concentration in XENON1T. The final 222Rn activity concentration of (4.5 ± 0.1) μBq/kg in the target of XENON1T is the lowest ever achieved in a xenon dark matter experiment
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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The European physical journal. C, Particles and fields. - 81, 4 (2021) , 337, ISSN: 1434-6052
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2021
- Urheber
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XENON Collaboration, [Study Group]
Aprile, Elena
Brown, Adam
Coderre, Daniel
Elykov, Alexey
Lindemann, Sebastian
Masson, Darryl
Ramírez García, Diego
Šarčević, Nikolina
Schumann, Marc
Toschi, Francesco
- Beteiligte Personen und Organisationen
- DOI
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10.1140/epjc/s10052-020-08777-z
- URN
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urn:nbn:de:bsz:25-freidok-2201875
- Rechteinformation
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Kein Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 11:02 MESZ
Datenpartner
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Beteiligte
- XENON Collaboration, [Study Group]
- Aprile, Elena
- Brown, Adam
- Coderre, Daniel
- Elykov, Alexey
- Lindemann, Sebastian
- Masson, Darryl
- Ramírez García, Diego
- Šarčević, Nikolina
- Schumann, Marc
- Toschi, Francesco
- Albert-Ludwigs-Universität Freiburg. Astroparticle Physics
- Universität
Entstanden
- 2021
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